:root{--font-sans:Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--color-canvas:#071019;--color-surface:#101c27;--color-surface-raised:#172633;--color-border:#2b3c49;--color-text:#f3f7f9;--color-muted:#9eb0ba;--color-primary:#4de2c5;--color-secondary:#ffcf5a;--color-gift-card:#75510c;--color-gift-card-icon:#a96f08;--color-gift-card-border:#d8aa4d;--color-gift-card-surface:#fff1c7;--color-warning:var(--color-secondary);--color-danger:#ff6b7a;--radius-sm:4px;--radius-md:8px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--duration-normal:.22s;--duration-spatial:.7s;--ease-standard:cubic-bezier(.2, .8, .2, 1);--ease-spatial:cubic-bezier(.45, 0, .55, 1);--tool-panel-max-width:1440px;--content-collapsed-gutter:clamp(var(--space-6), 4vw, 80px);--panel-collapsed-inset:clamp(var(--space-4), 1.5vw, var(--space-5));--visual-control-height:38px;--visual-control-font-size:13px;--visual-control-font-weight:800;--orientation-guide-size:112px;--orientation-guide-font-size:14px;--orientation-guide-stroke:2px}@media (max-width:520px){.theme-picker-popover{width:calc(100vw - 24px);position:fixed;top:66px;right:12px}.theme-option{grid-template-columns:68px minmax(0,1fr) auto}.theme-preview{width:68px}.theme-option-copy small{white-space:normal}}[data-theme=light]{--color-canvas:#f2f5f4;--color-surface:#fff;--color-surface-raised:#e8efed;--color-border:#cbd8d4;--color-text:#17201f;--color-muted:#5e6e6a;--color-primary:#087e6b;--color-secondary:#9b6700;--color-gift-card:#704900;--color-gift-card-icon:#9d6500;--color-gift-card-border:#c99431;--color-gift-card-surface:#fff0c2}[data-theme=obsidian-glass]{--skin-art-image:linear-gradient(112deg, transparent 0 24%, #ffffff13 35%, transparent 47% 68%, #18e88911 78%, transparent 88%);--skin-art-wash:#0407067a;--color-canvas:#050807;--color-surface:#111614;--color-surface-raised:#1a211e;--color-border:#3a4540;--color-text:#f3f7f5;--color-muted:#98a39e;--color-primary:#18e889;--color-secondary:#e4bd66;--color-gift-card:#6f4c08;--color-gift-card-icon:#a46c08;--color-gift-card-border:#d1a64d;--color-gift-card-surface:#fff0c3;--color-grid:#d2eade09;--color-ambient:#18e88924;--color-glass:#111614c7;--radius-sm:11px;--radius-md:20px;--shadow-sm:0 12px 28px #0000006b, inset 0 1px #ffffff12;--shadow-md:0 22px 52px #0000008a, inset 0 1px #ffffff14;--shadow-lg:0 32px 76px #000000a3, inset 0 1px #ffffff17;--skin-panel:linear-gradient(145deg, #ffffff13, transparent 36%), linear-gradient(180deg, #1d2321d1, #0a0e0ce6);--skin-shell:linear-gradient(180deg, #ffffff0b, transparent), #080b0ad1;--skin-border:#e6f2ec33;--skin-highlight:#fff6;--skin-shadow:0 28px 64px #000000a8, inset 0 1px #ffffff1a, inset 1px 0 #ffffff09;--skin-grid-size:18px}[data-theme=deep-space]{--skin-header-ship-width:180px;--skin-header-ship-height:64px;--skin-header-ship-size:360px auto;--skin-header-ship-position:right -24px;--skin-art-image:url(/skins/deep-space-frame-v4.png);--skin-art-wash:#03081766;--color-canvas:#050916;--color-surface:#0c1428;--color-surface-raised:#152443;--color-border:#2b4269;--color-text:#f2f7ff;--color-muted:#91a6c7;--color-primary:#52ddff;--color-secondary:#a883ff;--color-warning:#ffc96b;--color-danger:#ff728f;--radius-sm:8px;--radius-md:16px;--shadow-md:0 22px 56px #00051494, inset 0 1px #a7deff17;--shadow-lg:0 34px 82px #000412b8, inset 0 1px #a7deff1c;--skin-panel:linear-gradient(135deg, #52ddff14, transparent 32%), linear-gradient(180deg, #121f3ce0, #070d1eeb);--skin-shell:linear-gradient(180deg, #52ddff0e, transparent), #050a19db;--skin-border:#71c6ff3b;--skin-highlight:#7ce1ff73;--skin-shadow:0 28px 68px #000416ad, inset 0 1px #b1e7ff1a;--skin-grid-size:36px}[data-theme=starfield]{--skin-art-image:url(/skins/starfield-background-v7.png);--skin-starfield-size:max(100vw, 1180px) auto;--skin-art-wash:#020a1233;--color-canvas:#020910;--color-surface:#071622;--color-surface-raised:#102938;--color-border:#285267;--color-text:#f3fbff;--color-muted:#9bb7c4;--color-primary:#69dfff;--color-secondary:#e8c5ae;--color-warning:#ffd77d;--color-danger:#ff7fad;--radius-sm:10px;--radius-md:20px;--shadow-md:0 22px 54px #09031f94, inset 0 1px #e7d7ff17;--shadow-lg:0 34px 82px #08021db3, inset 0 1px #e7d7ff1c;--skin-panel:radial-gradient(circle at 90% 4%, #ffcf701a, transparent 28%), linear-gradient(145deg, #c197ff1a, transparent 40%), #140d2bde;--skin-shell:linear-gradient(180deg, #b895ff14, transparent), #0c071cdb;--skin-border:#c3a1ff40;--skin-highlight:#e6d6ff70;--skin-shadow:0 28px 68px #08021dad, inset 0 1px #eee1ff1c;--skin-grid-size:44px}[data-theme=candy]{--skin-art-image:url(/skins/candy-frame-v4.png);--skin-art-wash:#fff8e957;--color-canvas:#fff8e9;--color-surface:#fffefd;--color-surface-raised:#fff0d7;--color-border:#ead8c4;--color-text:#41364b;--color-muted:#806f82;--color-primary:#f06d9f;--color-secondary:#6e63df;--color-warning:#df941d;--color-danger:#e55272;--radius-sm:14px;--radius-md:26px;--shadow-md:0 18px 38px #754b6529, inset 0 1px #ffffffe6;--shadow-lg:0 28px 60px #754b6536, inset 0 1px #fffffff2;--skin-panel:linear-gradient(145deg, #fffffff5, #fff4dde0);--skin-shell:#fffaefe0;--skin-border:#deb1c29e;--skin-highlight:#fffffff2;--skin-shadow:0 18px 40px #8f5b782b, inset 0 1px #fffffff2;--skin-grid-size:34px}[data-theme=zoo]{--skin-art-image:url(/skins/zoo-frame-v3.png);--skin-art-wash:#f5f1df4d;--color-canvas:#f5f1df;--color-surface:#fffaf0;--color-surface-raised:#e7efd5;--color-border:#bdc6a4;--color-text:#303b2e;--color-muted:#687363;--color-primary:#4e9165;--color-secondary:#cf7b35;--color-warning:#ba7926;--color-danger:#d45e58;--radius-sm:12px;--radius-md:22px;--shadow-md:0 18px 40px #4654372e, inset 0 1px #ffffffc2;--shadow-lg:0 28px 62px #4654373d, inset 0 1px #ffffffd1;--skin-panel:linear-gradient(145deg, #fffc, #efeecfe6);--skin-shell:#f7f4e2e6;--skin-border:#6b85545c;--skin-highlight:#ffffffeb;--skin-shadow:0 20px 42px #4b5b3a33, inset 0 1px #ffffffd6;--skin-grid-size:42px}[data-theme=rose]{--skin-art-image:url(/skins/rose-frame-v7.png);--skin-art-wash:#fff3f829;--color-canvas:#fff3f8;--color-surface:#fffafd;--color-surface-raised:#f9e4f0;--color-border:#e7bfd3;--color-text:#4b3343;--color-muted:#8b6b7e;--color-primary:#db5f9a;--color-secondary:#8d6bd8;--color-warning:#bd812f;--color-danger:#dc536f;--radius-sm:13px;--radius-md:24px;--shadow-md:0 20px 44px #7e486a2b, inset 0 1px #ffffffd1;--shadow-lg:0 30px 66px #7e486a3b, inset 0 1px #ffffffe6;--skin-panel:linear-gradient(145deg, #ffffffe0, #fbe2f1c7);--skin-shell:#fff4fadb;--skin-border:#dc8fb573;--skin-highlight:#fffffff5;--skin-shadow:0 22px 48px #874b6f33, inset 0 1px #ffffffe6;--skin-grid-size:38px}[data-theme=premium-workspace]{--color-canvas:#050708;--color-surface:#0b0f11;--color-surface-raised:#101517;--color-border:#dcf0e821;--color-text:#edf2ef;--color-muted:#8d9893;--color-primary:#18e08a;--color-secondary:#aebbb5;--color-warning:#e5c265;--color-danger:#ff5c63;--radius-sm:12px;--radius-md:18px;--shadow-md:0 18px 60px #00000073, inset 0 1px #ffffff08;--shadow-lg:0 28px 82px #00000094, inset 0 1px #ffffff09;--skin-border:#dcf0e821;--skin-highlight:#ffffff0f;--skin-shadow:0 18px 60px #00000073, inset 0 1px #ffffff08}*{box-sizing:border-box}html{background:var(--color-canvas)}body{color:var(--color-text);background:linear-gradient(#4de2c50a 1px, transparent 1px), linear-gradient(90deg, #4de2c50a 1px, transparent 1px), var(--color-canvas);font-family:var(--font-sans);background-size:32px 32px;margin:0}button,input,select,textarea{color:inherit;font:inherit}button{cursor:pointer}input,select,textarea{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);outline:none;width:100%;padding:10px 12px}input:focus,select:focus,textarea:focus{border-color:var(--color-primary)}label{gap:var(--space-2);color:var(--color-muted);font-size:13px;font-weight:700;display:grid}.themed-select{width:100%;min-width:0;position:relative}.themed-select-trigger{justify-content:space-between;align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);width:100%;min-width:0;min-height:42px;color:var(--color-text);background:linear-gradient(180deg, color-mix(in srgb, var(--color-surface-raised) 52%, transparent), transparent), var(--color-canvas);text-align:left;transition:border-color var(--duration-normal) var(--ease-standard), color var(--duration-normal) var(--ease-standard), background var(--duration-normal) var(--ease-standard), box-shadow var(--duration-normal) var(--ease-standard), transform var(--duration-normal) var(--ease-standard);padding:0 11px 0 13px;font-weight:800;display:flex}.themed-select-trigger>span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.themed-select-trigger svg{width:16px;height:16px;color:var(--color-muted);transition:color var(--duration-normal) var(--ease-standard), transform var(--duration-normal) var(--ease-standard);flex:none}.themed-select-trigger:hover:not(:disabled){border-color:color-mix(in srgb, var(--color-primary) 62%, var(--color-border));color:var(--color-primary);background:linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 8%, transparent), transparent), var(--color-canvas)}.themed-select-trigger:focus-visible,.themed-select.open .themed-select-trigger{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 13%, transparent), inset 0 -2px 0 color-mix(in srgb, var(--color-primary) 72%, transparent);outline:none}.themed-select.open .themed-select-trigger svg{color:var(--color-primary);transform:rotate(180deg)}.themed-select-trigger:disabled{cursor:not-allowed;opacity:.45}.primary-tool .themed-select>.themed-select-trigger,.visualization-tool .themed-select>.themed-select-trigger{justify-content:space-between;gap:var(--space-2);border:1px solid var(--color-border);width:100%;min-height:42px;color:var(--color-text);background:linear-gradient(180deg, color-mix(in srgb, var(--color-surface-raised) 52%, transparent), transparent), var(--color-canvas);padding:0 11px 0 13px;font-weight:800}.primary-tool .themed-select>.themed-select-trigger:hover:not(:disabled),.visualization-tool .themed-select>.themed-select-trigger:hover:not(:disabled){border-color:color-mix(in srgb, var(--color-primary) 62%, var(--color-border));color:var(--color-primary);background:linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 8%, transparent), transparent), var(--color-canvas)}.primary-tool .themed-select.open>.themed-select-trigger,.visualization-tool .themed-select.open>.themed-select-trigger{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 13%, transparent), inset 0 -2px 0 color-mix(in srgb, var(--color-primary) 72%, transparent)}.themed-select-menu{z-index:1000;border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-surface) 96%, transparent);max-width:min(420px,100vw - 16px);max-height:min(304px,100vh - 16px);box-shadow:0 20px 48px #00000075, 0 0 0 1px color-mix(in srgb, var(--color-primary) 7%, transparent) inset;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);animation:themed-select-enter var(--duration-normal) var(--ease-standard);scrollbar-color:var(--color-border) transparent;padding:6px;display:grid;position:fixed;overflow-y:auto}.themed-select-menu>button{justify-content:space-between;align-items:center;gap:var(--space-3);border-radius:var(--radius-sm);width:100%;min-height:38px;color:var(--color-muted);font:inherit;text-align:left;background:0 0;border:1px solid #0000;padding:7px 10px;font-size:13px;font-weight:800;display:flex}.themed-select-menu>button+button{margin-top:2px}.themed-select-menu>button.highlighted:not(:disabled){border-color:color-mix(in srgb, var(--color-primary) 28%, transparent);color:var(--color-text);background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas))}.themed-select-menu>button.selected{border-color:color-mix(in srgb, var(--color-primary) 52%, var(--color-border));color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 13%, var(--color-canvas))}.themed-select-menu>button:disabled{cursor:not-allowed;opacity:.4}.themed-select-menu svg{flex:none;width:15px;height:15px}@keyframes themed-select-enter{0%{opacity:0;transform:translateY(-5px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@media (prefers-reduced-motion:reduce){.themed-select-trigger,.themed-select-trigger svg,.themed-select-menu{transition:none;animation:none}}.arithmetic-term-controls .themed-select{min-width:0}.primary-tool .arithmetic-term-controls .themed-select-trigger{justify-content:center;height:48px;min-height:48px;padding:0 7px}.arithmetic-term-controls .themed-select-trigger>span{text-align:center;flex:1}.vertical-practice-toolbar .themed-select-trigger{min-height:44px}.tangram-exact-edit-bar .themed-select,.tangram-measure-bar .themed-select{min-width:0}.tangram-measure-bar .themed-select{min-width:116px}.fraction-term-heading .themed-select{min-width:92px}.app-shell{--sidebar-width:240px;--sidebar-handle-width:8px;grid-template-columns:min(var(--sidebar-width), 45vw) minmax(0, 1fr);grid-template-rows:64px minmax(0,1fr);grid-template-areas:"topbar topbar""sidebar content";min-height:100vh;display:grid}.topbar{z-index:60;border-bottom:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 88%, transparent);min-height:64px;padding:0 var(--space-5);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);grid-area:topbar;justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.brand,.top-actions,.user-chip,.command-button,.nav-item{align-items:center;display:flex}.brand{gap:var(--space-2);font-weight:700}.plain-button{color:inherit;background:0 0;border:0}.brand-mark,.module-icon{color:var(--color-primary);place-items:center;display:grid}.brand-mark{border:1px solid var(--color-primary);border-radius:var(--radius-sm);width:32px;height:32px}.environment-badge{margin-right:auto;margin-left:var(--space-4);border:1px solid var(--color-secondary);border-radius:var(--radius-sm);color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 10%, transparent);padding:5px var(--space-2);font-size:12px;font-weight:700}.environment-badge.environment-development{border-color:color-mix(in srgb, var(--color-danger) 72%, var(--color-border));color:var(--color-danger);background:color-mix(in srgb, var(--color-danger) 12%, var(--color-surface));box-shadow:0 0 0 1px color-mix(in srgb, var(--color-danger) 8%, transparent);gap:7px}.environment-badge.environment-development strong{border-left:1px solid color-mix(in srgb, var(--color-danger) 35%, transparent);letter-spacing:.02em;padding-left:7px;font-size:11px}.top-actions{gap:var(--space-2)}.command-button{gap:var(--space-2);border:1px solid var(--color-primary);border-radius:var(--radius-sm);color:#03120f;background:var(--color-primary);min-height:36px;padding:0 var(--space-4);font-weight:700}.login-trial-button{min-height:42px;padding-inline:var(--space-3);white-space:nowrap;gap:7px}.login-trial-button>.login-button-icon{width:16px;height:16px}.login-button-label{line-height:1}.login-trial-gift{border:1px solid var(--color-gift-card-border);border-radius:var(--radius-sm);min-height:25px;color:var(--color-gift-card);background:var(--color-gift-card-surface);align-items:center;gap:4px;padding:0 7px;font-size:11px;font-weight:900;line-height:1;display:inline-flex}.login-trial-gift svg{width:14px;height:14px;color:var(--color-gift-card-icon);fill:color-mix(in srgb, var(--color-gift-card-icon) 16%, transparent);stroke-width:2.4px}.icon-button{border:1px solid var(--color-border);border-radius:var(--radius-sm);width:36px;height:36px;color:var(--color-muted);background:var(--color-surface);flex:0 0 36px;place-items:center;display:inline-grid}.icon-button:hover{color:var(--color-primary);border-color:var(--color-primary)}.icon-button svg,.nav-item svg,.favorite svg,.module-card svg{width:18px;height:18px}.theme-picker{position:relative}.theme-picker-trigger.active{color:var(--color-primary);border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface))}.theme-picker-popover{z-index:90;top:calc(100% + var(--space-2));gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 25%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-surface) 96%, transparent);width:min(382px,100vw - 24px);padding:var(--space-3);-webkit-backdrop-filter:blur(22px)saturate(130%);backdrop-filter:blur(22px)saturate(130%);animation:themed-select-enter var(--duration-normal) var(--ease-standard);display:grid;position:absolute;right:0;box-shadow:0 20px 48px #00000075}.theme-picker-popover>header{justify-content:space-between;align-items:center;gap:var(--space-3);padding:2px var(--space-1);display:flex}.theme-picker-popover>header>div{gap:2px;display:grid}.theme-picker-popover>header strong{font-size:15px}.theme-picker-popover>header small{color:var(--color-muted);font-size:12px}.theme-picker-popover>header>svg{width:19px;height:19px;color:var(--color-primary)}.theme-options{gap:var(--space-2);scrollbar-color:var(--color-border) transparent;max-height:min(520px,100vh - 190px);padding-right:2px;display:grid;overflow-y:auto}.theme-option{align-items:center;gap:var(--space-3);border:1px solid var(--color-border);border-radius:calc(var(--radius-sm) + 2px);min-width:0;color:var(--color-text);background:color-mix(in srgb, var(--color-surface-raised) 38%, transparent);text-align:left;transition:border-color var(--duration-normal) var(--ease-standard), background var(--duration-normal) var(--ease-standard), transform var(--duration-normal) var(--ease-standard);grid-template-columns:76px minmax(0,1fr) auto;padding:9px;display:grid}.theme-option:hover{border-color:color-mix(in srgb, var(--color-primary) 58%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 7%, var(--color-surface));transform:translateY(-1px)}.theme-option.active{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface))}.theme-preview{border:1px solid #ffffff29;border-radius:8px;width:76px;height:48px;display:block;position:relative;overflow:hidden;box-shadow:inset 0 1px #ffffff1f}.theme-preview:before{content:"";background-size:12px 12px;position:absolute;inset:0}.theme-preview i{border:1px solid #ffffff2e;border-radius:4px;display:block;position:absolute;box-shadow:0 5px 10px #00000047}.theme-preview i:first-child{width:16px;top:7px;bottom:7px;left:7px}.theme-preview i:nth-child(2){height:14px;top:8px;left:28px;right:7px}.theme-preview i:nth-child(3){height:12px;bottom:7px;left:28px;right:7px}.theme-preview-technology{background:#071019}.theme-preview-technology:before{background-image:linear-gradient(#4de2c514 1px,#0000 1px),linear-gradient(90deg,#4de2c514 1px,#0000 1px)}.theme-preview-technology i{background:#172633}.theme-preview-technology i:nth-child(3){border-color:#4de2c5}.theme-preview-light{background:#f2f5f4;border-color:#cbd8d4}.theme-preview-light:before{background-image:linear-gradient(#087e6b0f 1px,#0000 1px),linear-gradient(90deg,#087e6b0f 1px,#0000 1px)}.theme-preview-light i{background:#fff;border-color:#cbd8d4;box-shadow:0 4px 9px #2e48411a}.theme-preview-light i:nth-child(3){background:#e8efed;border-color:#087e6b}.theme-preview-obsidian-glass{background:radial-gradient(circle at 72% 28%,#18e8893d,#0000 22%),linear-gradient(145deg,#ffffff1f,#0000 34%),#050807}.theme-preview-obsidian-glass:before{background-image:linear-gradient(#e6f5ee0b 1px,#0000 1px),linear-gradient(90deg,#e6f5ee0b 1px,#0000 1px)}.theme-preview-obsidian-glass i{background:linear-gradient(145deg,#ffffff1f,#111614b3);border-color:#e6f5ee33;box-shadow:0 7px 14px #00000094,inset 0 1px #ffffff2e}.theme-preview-obsidian-glass i:nth-child(3){background:linear-gradient(145deg,#18e889d9,#044a2bc2);border-color:#18e889b8}.theme-preview-deep-space{background:url(/skins/deep-space-frame-v4.png) 50%/cover no-repeat,#050916}.theme-preview-deep-space:before{background-image:linear-gradient(#52ddff0f 1px,#0000 1px),linear-gradient(90deg,#52ddff0f 1px,#0000 1px)}.theme-preview-deep-space i{background:linear-gradient(145deg,#52ddff21,#101c38);border-color:#62d1ff52}.theme-preview-deep-space i:nth-child(3){background:linear-gradient(90deg,#10445f,#243a76);border-color:#52ddff}.theme-preview-starfield{background:url(/skins/starfield-background-v7.png) 0 0/cover no-repeat,#020910;border-color:#69dfff5c;box-shadow:inset 0 0 18px #02091029}.theme-preview-starfield:before{background:linear-gradient(90deg,#02091014,#0000 58%)}.theme-preview-starfield i{opacity:.46;-webkit-backdrop-filter:blur(1px);backdrop-filter:blur(1px);background:#04121c7a;border-color:#69dfff4d;box-shadow:0 4px 10px #0000005c}.theme-preview-starfield i:nth-child(3){background:#08222c8c;border-color:#69dfff9e}.theme-preview-candy{background:url(/skins/candy-frame-v4.png) 0 0/100% no-repeat,#fff8e9;border-color:#ead8c4}.theme-preview-candy i{background:#fffefd;border-color:#e9c9d5;box-shadow:0 4px 9px #754b6521}.theme-preview-candy i:first-child{background:#c9eddf}.theme-preview-candy i:nth-child(3){background:#ffd4e1;border-color:#f06d9f}.theme-preview-zoo{background:url(/skins/zoo-frame-v3.png) 16% 12%/126% no-repeat,#f5f1df;border-color:#bdc6a4}.theme-preview-zoo i{background:#fffaf0;border-color:#b9c69f;box-shadow:0 4px 9px #46543724}.theme-preview-zoo i:first-child{background:#dbe8c8}.theme-preview-zoo i:nth-child(3){background:#efc18b;border-color:#cf7b35}.theme-preview-rose{background:url(/skins/rose-frame-v7.png) 0 0/100% no-repeat,linear-gradient(135deg,#fff3f8,#f2e7ff);border-color:#e7bfd3}.theme-preview-rose i{background:#fffafdd1;border-color:#db5f9a52;box-shadow:0 4px 10px #7e486a29}.theme-preview-rose i:nth-child(3){background:linear-gradient(90deg,#f6c8dc,#dfb9f0);border-color:#db5f9a}.theme-preview-premium-workspace{background:radial-gradient(circle at 66% 58%,#18e08a2e,#0000 32%),linear-gradient(#030405,#090b0c);border-color:#e1fff23d;box-shadow:inset 0 1px #ffffff29,0 6px 14px #00000073}.theme-preview-premium-workspace:before{background:linear-gradient(120deg,#ffffff1c,#0000 25% 72%,#4cffa90a)}.theme-preview-premium-workspace i{-webkit-backdrop-filter:blur(4px)saturate(135%);backdrop-filter:blur(4px)saturate(135%);background:linear-gradient(145deg,#ffffff1f,#ffffff06 30%,#080d0fad);border-color:#e1fff240;border-radius:6px;box-shadow:0 7px 16px #00000094,inset 0 1px #ffffff26}.theme-preview-premium-workspace i:nth-child(2){transform:translate(-2px,2px)}.theme-preview-premium-workspace i:nth-child(3){background:linear-gradient(135deg,#39ff9fb3,#098f5261);border-color:#54ffaeb8;transform:translate(3px,-2px);box-shadow:0 0 15px #18e08a3d,0 8px 16px #0000008c,inset 0 1px #ffffff47}.theme-option-copy{gap:3px;min-width:0;display:grid}.theme-option-copy strong{font-size:13px}.theme-option-copy small{color:var(--color-muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;line-height:1.35;overflow:hidden}.theme-option-state{min-width:24px;color:var(--color-primary);justify-content:flex-end;align-items:center;gap:3px;display:inline-flex}.theme-option-state svg{width:16px;height:16px}.theme-option-state.locked{color:var(--color-secondary)}.theme-option-state b{font-size:10px}.theme-picker-popover>p{color:var(--color-muted);align-items:center;gap:5px;margin:0;font-size:11px;display:flex}.theme-picker-popover>p svg{width:13px;height:13px;color:var(--color-secondary)}.user-chip{gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);max-width:360px;min-height:36px;padding:0 var(--space-3);overflow:hidden}.user-chip span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.user-chip b{color:var(--color-secondary);font-size:12px}.user-chip img{object-fit:cover;border-radius:50%;width:24px;height:24px}.user-menu{position:relative}.user-menu:after{z-index:79;width:min(340px,100vw - 24px);height:var(--space-2);content:"";display:none;position:absolute;top:100%;right:0}.user-menu:hover:after,.user-menu:focus-within:after{display:block}.user-menu-chevron{width:15px;height:15px;color:var(--color-muted);transition:transform var(--duration-fast) var(--ease-standard)}.user-menu:hover .user-menu-chevron,.user-menu:focus-within .user-menu-chevron{transform:rotate(180deg)}.user-menu-popover{z-index:80;top:calc(100% + var(--space-2));border:1px solid var(--color-border);border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-surface) 96%, transparent);width:min(340px,100vw - 24px);box-shadow:var(--shadow-lg);padding:var(--space-2);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);display:none;position:absolute;right:0;overflow:hidden}.user-menu:hover .user-menu-popover,.user-menu:focus-within .user-menu-popover{gap:var(--space-1);display:grid}.user-menu-profile{gap:var(--space-3);border-bottom:1px solid var(--color-border);padding:var(--space-3);grid-template-columns:44px minmax(0,1fr);align-items:center;display:grid}.user-menu-profile>img,.user-menu-profile>svg{object-fit:cover;width:44px;height:44px;color:var(--color-primary);border-radius:50%}.user-menu-profile>div{gap:2px;min-width:0;display:grid}.user-menu-profile strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.user-menu-profile small,.user-menu-profile span{color:var(--color-muted);font-size:12px}.user-menu-popover>button,.user-menu-popover>a{align-items:center;gap:var(--space-3);border-radius:var(--radius-sm);min-height:54px;color:var(--color-text);padding:var(--space-2) var(--space-3);text-align:left;background:0 0;border:0;grid-template-columns:24px minmax(0,1fr);text-decoration:none;display:grid}.user-menu-popover>button:hover,.user-menu-popover>a:hover{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, transparent)}.user-menu-popover>button>svg,.user-menu-popover>a>svg{width:19px;height:19px}.user-menu-popover>button>span,.user-menu-popover>a>span{gap:2px;display:grid}.user-menu-popover>button small,.user-menu-popover>a small{color:var(--color-muted);font-size:12px;font-weight:500}.user-menu-logout{border-top:1px solid var(--color-border)!important;border-radius:0 0 var(--radius-sm) var(--radius-sm)!important;color:var(--color-muted)!important}.sidebar{gap:var(--space-1);border-right:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 92%, transparent);height:calc(100vh - 64px);padding:var(--space-4) var(--space-3);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);flex-direction:column;grid-area:sidebar;display:flex;position:sticky;top:64px;overflow:hidden auto}.sidebar-panel{gap:var(--space-1);flex-direction:column;min-height:100%;display:flex}.sidebar-home-row{padding-right:var(--space-1);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);grid-template-columns:minmax(0,1fr) 40px;align-items:center;display:grid}.sidebar-home-row.active{box-shadow:inset 3px 0 var(--color-primary)}.sidebar-home-row .desktop-home-nav{box-shadow:none;background:0 0;border:0}.sidebar-home-row .sidebar-collapse-control{background:0 0;border-color:#0000}.sidebar-collapse-control,.sidebar-expand-control{justify-content:center;align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:38px;color:var(--color-muted);background:color-mix(in srgb, var(--color-surface) 94%, transparent);padding:0 var(--space-3);font-weight:800;display:inline-flex}.sidebar-collapse-control{width:40px;min-width:40px;min-height:40px;padding:0}.sidebar-collapse-control:hover,.sidebar-expand-control:hover{border-color:var(--color-primary);color:var(--color-primary)}.sidebar-collapse-control svg,.sidebar-expand-control svg{width:18px;height:18px}.sidebar-expand-control{z-index:22;width:40px;top:calc(64px + var(--space-3));left:var(--space-3);box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);padding:0;display:none;position:fixed}.sidebar-resizer{z-index:21;top:64px;bottom:0;left:calc(min(var(--sidebar-width), 45vw) - var(--sidebar-handle-width) / 2);width:var(--sidebar-handle-width);cursor:col-resize;touch-action:none;-webkit-user-select:none;user-select:none;position:fixed}.sidebar-resizer:hover,.sidebar-resizer:focus-visible,.sidebar-resizer.resizing{background:color-mix(in srgb, var(--color-primary) 40%, transparent);outline:none}.app-shell:has(.sidebar-resizer.resizing){cursor:col-resize;-webkit-user-select:none;user-select:none}@media (max-width:680px){.sidebar-home-row,.sidebar-resizer,.sidebar-collapse-control,.sidebar-expand-control{display:none}}@media (min-width:681px){.app-shell.sidebar-collapsed{--tool-panel-max-width:100%;grid-template-columns:0 minmax(0,1fr)}.app-shell.sidebar-collapsed .content{padding-inline:var(--content-collapsed-gutter)}.app-shell.sidebar-collapsed .tool-panel{padding-inline:var(--panel-collapsed-inset)}.app-shell.sidebar-collapsed .sidebar,.app-shell.sidebar-collapsed .sidebar-resizer{display:none}.app-shell.sidebar-collapsed .sidebar-expand-control{display:inline-flex}}.mobile-bottom-nav,.mobile-menu-header,.mobile-favorite-filter{display:none}.sidebar-label{margin:var(--space-4) var(--space-3) var(--space-2);color:var(--color-muted);font-size:11px;font-weight:700}.sidebar-switcher{margin:var(--space-2) 0 var(--space-1);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:4px;display:grid}.sidebar-switcher button{border-radius:var(--radius-sm);min-height:32px;color:var(--color-muted);background:0 0;border:0;font-size:12px;font-weight:900}.sidebar-switcher button.active{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent)}.nav-item{gap:var(--space-3);border-radius:var(--radius-sm);width:100%;min-height:40px;color:var(--color-muted);padding:0 var(--space-3);text-align:left;background:0 0;border:1px solid #0000}.nav-item:hover,.nav-item.active{color:var(--color-text);border-color:var(--color-border);background:var(--color-surface)}.nav-item.active{box-shadow:inset 3px 0 var(--color-primary)}.nav-lock{color:var(--color-secondary);margin-left:auto}.feature-nav{gap:var(--space-1);grid-template-columns:minmax(0,1fr) 36px;display:grid}.curriculum-nav-section{gap:var(--space-1);margin-bottom:var(--space-2);display:grid}.curriculum-nav-section h3{margin:var(--space-3) var(--space-3) var(--space-1);color:var(--color-secondary);letter-spacing:0;font-size:12px}.curriculum-nav{gap:var(--space-1);grid-template-columns:minmax(0,1fr) 36px;display:grid}.curriculum-nav-item{align-items:start;gap:var(--space-2);border-radius:var(--radius-sm);min-height:82px;color:var(--color-muted);padding:var(--space-2) var(--space-3);text-align:left;background:0 0;border:1px solid #0000;grid-template-columns:18px minmax(0,1fr);display:grid}.curriculum-nav-item:hover,.curriculum-nav-item.active{color:var(--color-text);border-color:var(--color-border);background:var(--color-surface)}.curriculum-nav-item.active{box-shadow:inset 3px 0 var(--color-primary)}.curriculum-nav-item svg{width:16px;height:16px;color:var(--color-primary);margin-top:2px}.curriculum-nav-item span{gap:3px;min-width:0;display:grid}.curriculum-nav-item strong,.curriculum-nav-item small,.curriculum-nav-item em{overflow-wrap:anywhere}.curriculum-nav-item strong{color:var(--color-text);font-size:13px}.curriculum-nav-item small{color:var(--color-muted);font-size:12px;line-height:1.35}.curriculum-nav-item em{color:var(--color-primary);font-size:11px;font-style:normal;line-height:1.35}.curriculum-tree{gap:var(--space-1);padding-right:0;display:grid;overflow:visible}.curriculum-grade{margin-bottom:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-surface) 78%, transparent);display:grid;overflow:visible}.curriculum-grade-header{border-radius:var(--radius-sm);width:100%;color:var(--color-text);padding:var(--space-2) var(--space-3);text-align:left;cursor:pointer;background:0 0;border:0;gap:2px;display:grid}.curriculum-grade.expanded .curriculum-grade-header{border-bottom:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 35%, transparent);border-bottom-right-radius:0;border-bottom-left-radius:0}.curriculum-grade-header span{font-size:13px;font-weight:900}.curriculum-grade-header small{color:var(--color-muted);font-size:11px;font-weight:800}.curriculum-grade-body{gap:var(--space-2);padding:var(--space-2);display:grid}.curriculum-book{gap:4px;padding:0;display:grid}.curriculum-book>strong{color:var(--color-secondary);padding:0 var(--space-1) 2px;font-size:11px}.curriculum-unit-block{gap:4px;min-width:0;display:grid}.curriculum-unit{border-radius:var(--radius-sm);width:100%;color:var(--color-muted);padding:7px var(--space-2);text-align:left;background:0 0;border:1px solid #0000;gap:2px;display:grid}.curriculum-unit:hover:not(:disabled),.curriculum-unit.active{color:var(--color-text);border-color:var(--color-border);background:var(--color-surface)}.curriculum-unit.active{box-shadow:inset 3px 0 var(--color-primary)}.curriculum-unit-block.active{border:1px solid color-mix(in srgb, var(--color-primary) 50%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 7%, transparent)}.curriculum-unit span{font-size:12px;font-weight:900}.curriculum-unit em{overflow-wrap:anywhere;font-size:11px;font-style:normal;line-height:1.3}.curriculum-unit-tools{gap:var(--space-2);padding:0 0 var(--space-1);display:grid}.curriculum-floating-tools{z-index:80;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-surface) 96%, transparent);width:min(320px,100vw - 32px);max-height:min(520px,100vh - 32px);padding:var(--space-3);box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);display:grid;position:fixed;overflow:auto}.curriculum-floating-tools.pinned{border-color:color-mix(in srgb, var(--color-primary) 55%, var(--color-border));box-shadow:0 20px 50px #00000042, 0 0 0 1px color-mix(in srgb, var(--color-primary) 20%, transparent)}.curriculum-floating-tools p{color:var(--color-muted);margin:0;font-size:11px;line-height:1.4}.curriculum-floating-list{gap:var(--space-2);display:grid}.curriculum-tool{gap:var(--space-1);grid-template-columns:minmax(0,1fr) 36px;display:grid}.curriculum-tool>button:first-child{border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:50px;color:var(--color-text);background:var(--color-surface);padding:var(--space-2) var(--space-3);text-align:left;justify-items:start;gap:2px;display:grid}.curriculum-tool>button:first-child:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary)}.curriculum-tool>button:first-child:disabled{cursor:not-allowed;color:var(--color-muted);opacity:.72}.curriculum-tool strong{font-size:13px}.curriculum-tool small{color:var(--color-muted);font-size:11px;line-height:1.3}.sidebar-empty{margin:var(--space-3);border:1px dashed var(--color-border);border-radius:var(--radius-sm);color:var(--color-muted);padding:var(--space-3);font-size:12px;line-height:1.5}.sidebar-empty.compact{padding:var(--space-2);margin:0;font-size:11px}.favorite{border:1px solid var(--color-border);border-radius:var(--radius-sm);width:36px;height:40px;color:var(--color-muted);background:color-mix(in srgb, var(--color-surface) 68%, transparent);box-shadow:inset 0 1px color-mix(in srgb, var(--color-text) 10%, transparent), 0 5px 14px color-mix(in srgb, var(--color-canvas) 24%, transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);place-items:center;display:grid}.favorite:hover{border-color:var(--color-primary);color:var(--color-primary)}.favorite.active{border-color:color-mix(in srgb, var(--color-danger) 72%, var(--color-border));color:var(--color-danger);background:color-mix(in srgb, var(--color-danger) 15%, var(--color-surface) 58%);box-shadow:0 0 0 1px color-mix(in srgb, var(--color-danger) 15%, transparent), 0 6px 16px color-mix(in srgb, var(--color-danger) 14%, transparent)}.favorite.active svg{fill:currentColor}.favorite-filter{align-items:center;gap:var(--space-2);margin:var(--space-3);display:flex}.favorite-filter input{width:16px;height:16px;accent-color:var(--color-primary)}.overview-filter-bar{display:none}.overview-filter-button{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:36px;color:var(--color-muted);background:var(--color-surface);padding:0 var(--space-3);font-weight:800;display:inline-flex}.overview-filter-button[aria-pressed=true]{color:var(--color-danger);border-color:color-mix(in srgb, var(--color-danger) 55%, var(--color-border))}.overview-filter-button svg{width:16px;height:16px}.overview-filter-button[aria-pressed=true] svg{fill:currentColor}.sidebar-spacer{flex:1}.content{grid-area:content;min-width:0;padding:clamp(20px,4vw,56px)}.visualization-fullscreen-stage{width:100%;min-width:0;position:relative}.visualization-fullscreen-stage-content{width:100%;min-width:0;height:100%}.visualization-fullscreen-toggle{z-index:90;top:var(--space-3);right:var(--space-3);align-items:center;gap:var(--space-2);border:1px solid color-mix(in srgb, var(--color-primary) 36%, var(--color-border));background:color-mix(in srgb, var(--color-surface) 91%, transparent);min-height:38px;box-shadow:var(--shadow-sm);color:var(--color-text);padding:0 var(--space-3);font:inherit;cursor:pointer;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:999px;font-size:13px;font-weight:800;display:inline-flex;position:absolute}.visualization-fullscreen-toggle:hover{border-color:var(--color-primary);color:var(--color-primary);transform:translateY(-1px)}.visualization-fullscreen-toggle:focus-visible{outline:3px solid color-mix(in srgb, var(--color-primary) 28%, transparent);outline-offset:2px}.visualization-fullscreen-stage:fullscreen{--fullscreen-stage-inset:clamp(12px, 2vw, 28px);background:var(--color-bg);width:100vw;height:100dvh;padding:var(--fullscreen-stage-inset);overflow:hidden}.visualization-fullscreen-stage:fullscreen .visualization-fullscreen-stage-content{height:100%;min-height:0;overflow:auto}.visualization-fullscreen-stage:fullscreen .visualization-fullscreen-toggle{top:auto;right:max(var(--fullscreen-stage-inset), env(safe-area-inset-right));bottom:max(var(--fullscreen-stage-inset), env(safe-area-inset-bottom));border-color:color-mix(in srgb, var(--color-primary) 72%, var(--color-border));background:color-mix(in srgb, var(--color-canvas) 90%, transparent);box-shadow:0 12px 36px color-mix(in srgb, var(--color-bg) 68%, transparent), 0 0 0 1px color-mix(in srgb, var(--color-primary) 18%, transparent);color:var(--color-primary);position:fixed}.visualization-fullscreen-secondary-action{z-index:90;right:calc(max(var(--fullscreen-stage-inset), env(safe-area-inset-right)) + 136px);bottom:max(var(--fullscreen-stage-inset), env(safe-area-inset-bottom));position:fixed}.visualization-fullscreen-secondary-action button{align-items:center;gap:var(--space-2);border:1px solid color-mix(in srgb, var(--color-primary) 36%, var(--color-border));min-height:38px;color:var(--color-text);background:color-mix(in srgb, var(--color-canvas) 90%, transparent);box-shadow:var(--shadow-sm);padding:0 var(--space-3);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:999px;font-weight:800;display:inline-flex}.visualization-fullscreen-stage:fullscreen>.visualization-fullscreen-stage-content>:only-child{min-height:100%}.cube-fold-fullscreen:fullscreen .fold-card{grid-template-rows:auto minmax(0,1fr) auto auto;align-content:stretch;height:100%;overflow:hidden;min-height:0!important}.cube-fold-fullscreen:fullscreen .fold-card .panel-heading .inline-actions{display:none}.fold-viewport{--cube-inside-near:color-mix(in srgb, var(--color-surface-raised) 72%, #17202a);--cube-inside-far:color-mix(in srgb, var(--color-canvas) 88%, #020405);min-width:0;min-height:0;position:relative}.member-preview{min-width:0}.membership-assurance{gap:var(--space-2);padding:var(--space-4);border:1px solid var(--color-primary);border-radius:var(--radius-md);background:var(--color-surface-raised);font-size:13px;line-height:1.55;display:grid}.membership-assurance strong{color:var(--color-primary);font-size:14px}.cube-direction-guide{top:var(--space-2);left:var(--space-2);width:var(--orientation-guide-size);height:var(--orientation-guide-size);pointer-events:none;position:absolute;overflow:visible}.cube-direction-guide .axis-front{color:var(--color-primary)}.cube-direction-guide .axis-up{color:var(--color-secondary)}.cube-direction-guide .axis-left{color:var(--color-text)}.cube-direction-guide line,.cube-direction-guide path{fill:none;stroke:currentColor;stroke-width:var(--orientation-guide-stroke);stroke-linecap:round;stroke-linejoin:round}.cube-direction-guide text{fill:currentColor;font-size:var(--orientation-guide-font-size);font-weight:var(--visual-control-font-weight);text-anchor:middle;dominant-baseline:central;paint-order:stroke;stroke:var(--color-surface);stroke-width:3px}.cube-direction-guide .axis-origin{fill:var(--color-muted)}.cube-surface-legend{left:var(--space-3);bottom:var(--space-3);align-items:center;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-border) 72%, transparent);color:var(--color-muted);background:color-mix(in srgb, var(--color-canvas) 86%, transparent);box-shadow:var(--shadow-sm);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:none;border-radius:999px;padding:7px 10px;font-size:11px;font-weight:750;display:flex;position:absolute}.cube-surface-legend span{align-items:center;gap:5px;display:inline-flex}.cube-surface-legend i{border:1px solid color-mix(in srgb, var(--color-text) 48%, transparent);border-radius:3px;width:10px;height:10px}.cube-surface-legend i.outside{background:linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 72%, white), var(--color-primary))}.cube-surface-legend i.inside{background:linear-gradient(135deg, var(--cube-inside-near), var(--cube-inside-far))}.cube-fold-fullscreen:fullscreen .fold-viewport{margin-top:var(--space-3)}.cube-fold-fullscreen:fullscreen .fold-canvas{height:100%;min-height:0;max-height:none;margin-top:0}.fold-viewport>.fullscreen-controls-host{right:var(--space-4);bottom:var(--space-4);position:absolute}.fullscreen-floating-controls{align-items:center;gap:var(--space-2);display:flex}.visualization-fullscreen-stage:fullscreen .fullscreen-floating-controls>button{justify-content:center;align-items:center;gap:var(--space-2);min-height:40px;padding:0 var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);box-shadow:var(--shadow-sm);color:var(--color-text);white-space:nowrap;margin:0;font-size:13px;font-weight:800;display:inline-flex;position:static}.visualization-fullscreen-stage:fullscreen .fullscreen-floating-controls>.visualization-fullscreen-toggle{color:var(--color-primary);border-color:var(--color-primary)}.fullscreen-floating-controls svg{width:18px;height:18px}.scene-footer{justify-content:space-between;align-items:center;gap:var(--space-4);padding-top:var(--space-3);display:flex}.scene-footer-description{gap:var(--space-2);min-width:0;display:grid}.scene-footer .canvas-hint,.scene-footer .scene-direction-strip{margin:0}.orthographic-scene-fullscreen:fullscreen .scene-card{grid-template-rows:auto minmax(0,1fr) auto;height:100%;display:grid;overflow:hidden;min-height:0!important}.orthographic-scene-fullscreen:fullscreen .three-scene-canvas{aspect-ratio:auto;height:100%;min-height:0}.overview{width:min(1100px,100%);margin:0 auto}.tool-panel{margin:0 auto;width:min(var(--tool-panel-max-width), 100%)!important}.overview>header{width:100%;max-width:none;padding:clamp(20px,6vh,60px) 0 clamp(28px,6vh,56px)}.eyebrow{font-size:12px;font-weight:800;color:var(--color-primary)!important}.overview h1,.tool-panel h1{letter-spacing:0;margin:0;font-size:clamp(30px,4vw,52px);line-height:1.12}.overview header>p,.tool-panel header p{color:var(--color-muted);line-height:1.7}.overview header>p{max-width:980px}.module-grid{gap:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.module-card{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);transition:transform var(--duration-normal) var(--ease-standard), border-color var(--duration-normal) var(--ease-standard);position:relative}.module-card:hover{border-color:var(--color-primary);background:var(--color-surface-raised);transform:translateY(-3px)}.module-card-main{align-items:start;gap:var(--space-4);border-radius:inherit;width:100%;min-height:132px;color:var(--color-text);padding:var(--space-5);text-align:left;background:0 0;border:0;grid-template-columns:44px minmax(0,1fr) 20px;padding-right:52px;display:grid}.module-icon{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);width:44px;height:44px}.module-card strong,.module-card small{display:block}.module-card strong{margin-bottom:var(--space-2);font-size:18px}.module-card small{color:var(--color-muted);line-height:1.5}.stage-section{gap:var(--space-3);margin-top:var(--space-6);display:grid}.stage-section>header h2{color:var(--color-secondary);letter-spacing:0;margin:0;font-size:18px}.module-card-actions{top:50%;right:var(--space-4);align-items:center;gap:var(--space-2);display:flex;position:absolute;transform:translateY(-50%)}.module-lock,.module-favorite{border:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 88%, transparent);border-radius:50%;place-items:center;width:34px;height:34px;display:grid}.module-lock{color:var(--color-secondary);border-color:color-mix(in srgb, var(--color-secondary) 50%, var(--color-border))}.module-favorite{color:var(--color-muted)}.module-favorite.active{color:var(--color-danger);border-color:color-mix(in srgb, var(--color-danger) 55%, var(--color-border))}.module-favorite.active svg{fill:currentColor}.module-lock svg,.module-favorite svg{width:17px;height:17px}.overview-coming-soon{align-items:center;gap:var(--space-3);border-top:1px solid var(--color-border);padding:var(--space-4) 2px var(--space-2);grid-template-columns:30px minmax(0,1fr);margin-top:clamp(36px,6vh,64px);display:grid}.overview-coming-soon-icon{width:30px;height:30px;color:var(--color-muted);place-items:center;display:grid}.overview-coming-soon-icon svg{width:17px;height:17px}.overview-coming-soon-copy{gap:3px;display:grid}.overview-coming-soon h2,.overview-coming-soon span{margin:0}.overview-coming-soon h2{color:var(--color-text);font-size:16px;line-height:1.3}.overview-coming-soon-detail{align-items:center;gap:2px var(--space-2);flex-wrap:wrap;display:flex}.overview-coming-soon-detail>span{color:var(--color-muted);font-size:13px;line-height:1.5}.overview-coming-soon-detail>button{border-radius:var(--radius-sm);min-height:28px;color:var(--color-primary);white-space:nowrap;background:0 0;border:0;justify-content:center;align-items:center;gap:5px;padding:0 5px;font-size:13px;font-weight:800;display:inline-flex}.overview-coming-soon-detail>button:hover{background:color-mix(in srgb, var(--color-primary) 8%, transparent)}.overview-coming-soon-detail>button svg{width:14px;height:14px}.notice{width:min(1100px,100%);min-height:48px;margin:0 auto var(--space-4);border:1px solid var(--color-secondary);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-2) var(--space-3) var(--space-2) var(--space-4);justify-content:space-between;align-items:center;display:flex}.tool-panel{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);padding:clamp(18px,2.4vw,32px)}.tool-panel>header{margin-bottom:var(--space-6);border-bottom:1px solid var(--color-border);padding-bottom:var(--space-5)}.tool-panel h1{font-size:clamp(28px,4vw,40px)}.primary-action{border:1px solid var(--color-primary);border-radius:var(--radius-sm);color:#03120f;background:var(--color-primary);min-height:42px;padding:0 var(--space-5);font-weight:800}.primary-action:disabled{cursor:wait;opacity:.6}.primary-tool-layout{gap:var(--space-4);grid-template-columns:minmax(220px,300px) minmax(0,1fr);display:grid}.tool-control-card,.tool-workspace-card{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4)}.tool-control-card{align-content:start;gap:var(--space-4);display:grid}[data-theme=obsidian-glass] body{background:var(--skin-art-image) left top / max(100vw, 1180px) auto no-repeat, radial-gradient(ellipse at 50% -12%, #18e88921, transparent 30%), radial-gradient(ellipse at 100% 66%, #ffffff0a, transparent 28%), radial-gradient(circle at 1px 1px, #ffffff09 1px, transparent 1.2px), linear-gradient(var(--color-grid) 1px, transparent 1px), linear-gradient(90deg, var(--color-grid) 1px, transparent 1px), #050807;background-attachment:fixed;background-size:max(100vw, 1180px) auto, auto, auto, 5px 5px, var(--skin-grid-size) var(--skin-grid-size), var(--skin-grid-size) var(--skin-grid-size), auto}[data-theme=obsidian-glass] .topbar,[data-theme=obsidian-glass] .sidebar,[data-theme=obsidian-glass] .mobile-bottom-nav{background-image:linear-gradient(var(--skin-art-wash), var(--skin-art-wash)), var(--skin-art-image), linear-gradient(180deg, #ffffff09, transparent);-webkit-backdrop-filter:blur(10px)saturate(120%);backdrop-filter:blur(10px)saturate(120%);background-color:#090d0bad;background-position:50%,0 0,50%;background-repeat:no-repeat;background-size:auto,max(100vw,1180px),auto;background-attachment:scroll,fixed,scroll;border-color:#deefe621;box-shadow:inset 0 1px #fff1,0 14px 36px #0000004d}[data-theme=obsidian-glass] .brand-mark,[data-theme=obsidian-glass] .icon-button,[data-theme=obsidian-glass] .user-chip,[data-theme=obsidian-glass] .sidebar-home-row,[data-theme=obsidian-glass] .nav-item,[data-theme=obsidian-glass] .sidebar-switcher,[data-theme=obsidian-glass] .favorite-filter{box-shadow:inset 0 1px #ffffff0f,0 8px 20px #0000003d}[data-theme=obsidian-glass] .theme-picker-popover,[data-theme=obsidian-glass] .user-menu-popover,[data-theme=obsidian-glass] .modal{-webkit-backdrop-filter:blur(28px)saturate(135%);backdrop-filter:blur(28px)saturate(135%);background:linear-gradient(145deg,#ffffff13,#0000 34%),#0d1210e0;border-color:#e2f1ea30;box-shadow:0 36px 90px #000000b8,inset 0 1px #ffffff1a,inset 1px 0 #ffffff09}[data-theme=obsidian-glass] .module-card,[data-theme=obsidian-glass] .tool-panel,[data-theme=obsidian-glass] .tool-control-card,[data-theme=obsidian-glass] .tool-workspace-card,[data-theme=obsidian-glass] .notice{border-color:var(--skin-border);background:var(--skin-panel);box-shadow:var(--skin-shadow);-webkit-backdrop-filter:blur(18px)saturate(125%);backdrop-filter:blur(18px)saturate(125%)}[data-theme=obsidian-glass] .module-card:before,[data-theme=obsidian-glass] .tool-panel:before{z-index:0;content:"";pointer-events:none;background:linear-gradient(90deg,#0000,#ffffff52,#0000);height:1px;position:absolute;top:0;left:12%;right:12%}[data-theme=obsidian-glass] .tool-panel{isolation:isolate;position:relative}[data-theme=obsidian-glass] .tool-panel>*{z-index:1;position:relative}[data-theme=obsidian-glass] .module-card:hover{background:radial-gradient(circle at 82% 12%,#18e8891f,#0000 32%),linear-gradient(145deg,#ffffff16,#0000 38%),linear-gradient(#1b231fe6,#0d1310e6);border-color:#18e88999;transform:translateY(-5px);box-shadow:0 26px 58px #0000009e,0 0 0 1px #18e88914,inset 0 1px #ffffff1a}[data-theme=obsidian-glass] .module-icon,[data-theme=obsidian-glass] input,[data-theme=obsidian-glass] select,[data-theme=obsidian-glass] textarea,[data-theme=obsidian-glass] .themed-select-trigger{background:linear-gradient(#ffffff0b,#0000),#040806b8;border-color:#deefe62b;box-shadow:inset 0 1px #ffffff0e,0 8px 18px #0003}[data-theme=obsidian-glass] .primary-action,[data-theme=obsidian-glass] .command-button{color:#03170e;background:linear-gradient(#2cf29a,#0fcf75);box-shadow:0 10px 24px #18e8892e,inset 0 1px #ffffff6b}[data-theme=deep-space] body{background:var(--skin-art-image) left top / max(100vw, 1180px) auto no-repeat, radial-gradient(circle at 18% 16%, #52ddff33, transparent 24%), radial-gradient(circle at 82% 10%, #a883ff33, transparent 22%), linear-gradient(#52ddff09 1px, transparent 1px), linear-gradient(90deg,#52ddff09 1px,transparent 1px), var(--color-canvas);background-attachment:fixed;background-size:max(100vw, 1180px) auto, auto, auto, var(--skin-grid-size) var(--skin-grid-size), var(--skin-grid-size) var(--skin-grid-size), auto}[data-theme=starfield] body{isolation:isolate;background:var(--color-canvas)}[data-theme=starfield] body:before{z-index:-1;background:var(--skin-art-image) left top / var(--skin-starfield-size) no-repeat;content:"";pointer-events:none;position:fixed;inset:0}[data-theme=candy] body{background:var(--skin-art-image) left top / max(100vw, 1180px) auto no-repeat, radial-gradient(circle at 12% 8%, #f06d9f29, transparent 25%), radial-gradient(circle at 88% 18%, #6e63df21, transparent 26%), radial-gradient(circle, #f06d9f1f 0 2px, transparent 2.5px), var(--color-canvas);background-attachment:fixed;background-size:max(100vw, 1180px) auto, auto, auto, var(--skin-grid-size) var(--skin-grid-size), auto}[data-theme=zoo] body{background:var(--skin-art-image) left top / max(100vw, 1180px) auto no-repeat, radial-gradient(ellipse at 4% 2%, #4e916533, transparent 28%), radial-gradient(ellipse at 96% 12%, #cf7b3524, transparent 26%), radial-gradient(circle at 19px 22px, #4e91651f 0 4px, transparent 4.5px), radial-gradient(circle at 12px 13px, #4e91651a 0 2px, transparent 2.5px), radial-gradient(circle at 19px 10px, #4e91651a 0 2px, transparent 2.5px), radial-gradient(circle at 26px 13px, #4e91651a 0 2px, transparent 2.5px), var(--color-canvas);background-size:max(100vw,1180px),auto,auto,52px 52px,52px 52px,52px 52px,52px 52px,auto;background-attachment:fixed}[data-theme=rose] body{background:var(--skin-art-image) left top / max(100vw, 1180px) auto no-repeat, radial-gradient(circle at 14% 10%, #db5f9a2e, transparent 28%), radial-gradient(circle at 86% 18%, #8d6bd826, transparent 28%), radial-gradient(ellipse at 16px 13px, #db5f9a1a 0 3px, transparent 3.5px), radial-gradient(ellipse at 24px 20px, #8d6bd814 0 2px, transparent 2.5px), var(--color-canvas);background-attachment:fixed;background-size:max(100vw, 1180px) auto, auto, auto, var(--skin-grid-size) var(--skin-grid-size), var(--skin-grid-size) var(--skin-grid-size), auto}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .topbar,:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .sidebar,:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .mobile-bottom-nav{border-color:var(--skin-border);background-image:linear-gradient(var(--skin-art-wash), var(--skin-art-wash)), var(--skin-art-image);background-color:var(--color-surface);box-shadow:inset 0 1px var(--skin-highlight), 0 12px 34px color-mix(in srgb, var(--color-text) 10%, transparent);-webkit-backdrop-filter:blur(8px)saturate(115%);backdrop-filter:blur(8px)saturate(115%);background-position:50%,0 0;background-repeat:no-repeat;background-size:auto,max(100vw,1180px);background-attachment:scroll,fixed}[data-theme=starfield] :is(.topbar,.sidebar,.mobile-bottom-nav){background-image:none;background-color:var(--skin-art-wash);-webkit-backdrop-filter:none;backdrop-filter:none}:is([data-theme=obsidian-glass],[data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .brand{border:1px solid color-mix(in srgb, var(--skin-border) 78%, transparent);border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-surface) 62%, transparent);box-shadow:0 8px 22px color-mix(in srgb, var(--color-text) 10%, transparent), inset 0 1px var(--skin-highlight);text-shadow:0 1px 3px color-mix(in srgb, var(--color-canvas) 72%, transparent);-webkit-backdrop-filter:blur(16px)saturate(118%);backdrop-filter:blur(16px)saturate(118%);padding:5px 9px 5px 6px}:is([data-theme=obsidian-glass],[data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.nav-item,.sidebar-home-row,.sidebar-switcher,.favorite-filter,.sidebar-empty){border:1px solid color-mix(in srgb, var(--skin-border) 88%, transparent);background:color-mix(in srgb, var(--color-surface) 56%, transparent);box-shadow:0 7px 18px color-mix(in srgb, var(--color-text) 8%, transparent), inset 0 1px color-mix(in srgb, var(--skin-highlight) 56%, transparent);-webkit-backdrop-filter:blur(15px)saturate(116%);backdrop-filter:blur(15px)saturate(116%)}:is([data-theme=obsidian-glass],[data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .nav-item{color:color-mix(in srgb, var(--color-text) 80%, var(--color-muted));text-shadow:0 1px 3px color-mix(in srgb, var(--color-canvas) 70%, transparent)}:is([data-theme=obsidian-glass],[data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.nav-item.active,.curriculum-nav-item.active){border-color:color-mix(in srgb, var(--color-primary) 82%, var(--skin-border));color:var(--color-text);background:color-mix(in srgb, var(--color-primary) 20%, var(--color-surface) 58%);box-shadow:inset 4px 0 var(--color-primary), 0 0 0 1px color-mix(in srgb, var(--color-primary) 18%, transparent), 0 8px 24px color-mix(in srgb, var(--color-primary) 16%, transparent)}:is([data-theme=obsidian-glass],[data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .sidebar-label{border:1px solid color-mix(in srgb, var(--skin-border) 68%, transparent);width:fit-content;color:var(--color-text);background:color-mix(in srgb, var(--color-surface) 62%, transparent);box-shadow:0 6px 16px color-mix(in srgb, var(--color-text) 7%, transparent);text-shadow:0 1px 3px color-mix(in srgb, var(--color-canvas) 72%, transparent);-webkit-backdrop-filter:blur(14px)saturate(116%);backdrop-filter:blur(14px)saturate(116%);border-radius:999px;padding:4px 9px}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.theme-picker-popover,.user-menu-popover,.modal),:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice){border-color:var(--skin-border);background:var(--skin-panel);box-shadow:var(--skin-shadow);-webkit-backdrop-filter:blur(18px)saturate(120%);backdrop-filter:blur(18px)saturate(120%)}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.module-card,.tool-panel){isolation:isolate;position:relative}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.module-card,.tool-panel):before{z-index:0;background:linear-gradient(90deg, transparent, var(--skin-highlight), transparent);content:"";pointer-events:none;height:1px;position:absolute;top:0;left:12%;right:12%}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .tool-panel>*{z-index:1;position:relative}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) .module-card:hover{border-color:color-mix(in srgb, var(--color-primary) 68%, var(--skin-border));background:linear-gradient(145deg, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 38%), var(--skin-panel);box-shadow:0 25px 58px color-mix(in srgb, var(--color-text) 20%, transparent), inset 0 1px var(--skin-highlight);transform:translateY(-5px)}:is([data-theme=deep-space],[data-theme=starfield],[data-theme=candy],[data-theme=zoo],[data-theme=rose]) :is(.brand-mark,.icon-button,.user-chip,.module-icon,input,select,textarea,.themed-select-trigger){border-color:var(--skin-border);box-shadow:inset 0 1px var(--skin-highlight), 0 8px 18px color-mix(in srgb, var(--color-text) 9%, transparent)}[data-theme=deep-space] :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice,.modal){background-image:linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 34%), linear-gradient(180deg, #121f3ceb, #070d1ef0);border-radius:4px 22px}[data-theme=deep-space] :is(.module-card,.tool-panel):after{z-index:0;border-top:2px solid color-mix(in srgb, var(--color-primary) 70%, transparent);border-right:2px solid color-mix(in srgb, var(--color-primary) 70%, transparent);content:"";pointer-events:none;width:34px;height:34px;position:absolute;top:10px;right:10px}[data-theme=deep-space] :is(.primary-action,.command-button,.nav-item.active,.sidebar-switcher button.active){clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px)}[data-theme=deep-space] .module-icon{background:radial-gradient(circle,#52ddff38 0 18%,#0000 20% 42%,#52ddff38 44% 47%,#0000 49%),#08122ad1;border-radius:50%}@media (min-width:1200px){[data-theme=deep-space] .topbar:before{width:var(--skin-header-ship-width);height:var(--skin-header-ship-height);background:var(--skin-art-image) var(--skin-header-ship-position) / var(--skin-header-ship-size) no-repeat;content:"";pointer-events:none;position:absolute;top:0;left:52%}[data-theme=deep-space] .topbar>*{z-index:1;position:relative}}[data-theme=starfield] :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice,.modal){background-image:radial-gradient(circle at 84% 12%,#ffebb224 0 1px,#0000 2px),radial-gradient(circle at 92% 22%,#d9c3ff2b 0 2px,#0000 3px),linear-gradient(145deg,#b895ff1f,#0000 40%),linear-gradient(#1d123ce6,#0e0822eb);border-radius:28px 10px}[data-theme=starfield] :is(.module-card,.tool-panel):after{z-index:0;color:#ffe2a4b3;content:"✦";text-shadow:-26px 22px #d3bdff47,11px 40px #ffffff2e;pointer-events:none;font-size:18px;position:absolute;top:18px;right:20px}[data-theme=starfield] :is(.primary-action,.command-button){background:linear-gradient(110deg,#7b55c9,#b895ff 58%,#e5b86b);border-radius:999px;box-shadow:0 10px 30px #9b69e757}[data-theme=starfield] .module-icon{background:radial-gradient(circle at 35% 30%,#ffffff52,#0000 12%),linear-gradient(145deg,#b895ff38,#211444e0);border-radius:50% 50% 50% 16%}[data-theme=candy] :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice,.modal){background-image:linear-gradient(145deg,#fffffff7,#fff0dae6);border-width:2px;border-radius:26px}[data-theme=candy] :is(.module-card,.tool-panel):after{z-index:0;content:"";pointer-events:none;background:repeating-linear-gradient(135deg,#f06d9f3d 0 7px,#6e63df33 7px 14px);border:4px solid #f06d9f47;border-radius:999px;width:50px;height:18px;position:absolute;bottom:14px;right:18px;transform:rotate(-8deg)}[data-theme=candy] :is(.primary-action,.command-button,.nav-item,.sidebar-switcher,.icon-button,.module-icon){border-radius:999px}[data-theme=candy] :is(.primary-action,.command-button){background:linear-gradient(#ff91b8,#f06d9f);box-shadow:0 7px #b84c762e,inset 0 2px #ffffff9e}[data-theme=candy] .topbar{border-bottom-width:3px;border-image:linear-gradient(90deg,#f8b5cc,#ffd78c,#96ddca,#bba8f3) 1}[data-theme=zoo] :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice,.modal){background-image:radial-gradient(at 90% 8%,#5d975b1f,#0000 25%),repeating-linear-gradient(3deg,#70563008 0 2px,#0000 2px 8px),linear-gradient(145deg,#ffffffd1,#ecebc8eb);border-width:2px;border-radius:30px 12px 26px 14px}[data-theme=zoo] :is(.module-card,.tool-panel):after{z-index:0;content:"";pointer-events:none;background:linear-gradient(145deg,#508e599e,#7aa95e38);border-radius:100% 0;width:25px;height:38px;position:absolute;top:14px;right:18px;transform:rotate(18deg);box-shadow:-16px 18px 0 -4px #508e5940}[data-theme=zoo] :is(.primary-action,.command-button){color:#fffdf2;background:linear-gradient(#55895a,#3f704c);border-radius:18px 8px;box-shadow:0 7px #3f532d2e,inset 0 1px #ffffff52}[data-theme=zoo] .module-icon{background:linear-gradient(145deg,#dcebcb,#c5dba8);border-radius:50% 50% 46% 54%}[data-theme=rose] :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice,.modal){background-image:radial-gradient(circle at 92% 8%,#fffc 0 5px,#0000 6px),linear-gradient(145deg,#ffffffe6,#fadeeed1);border-width:2px;border-radius:30px;box-shadow:0 22px 48px #874b6f2e,inset 0 1px #fffffff2,inset 0 0 0 5px #ffffff2e}[data-theme=rose] :is(.module-card,.tool-panel):after{z-index:0;content:"";pointer-events:none;background:#db5f9a57;border-radius:90% 10%;width:14px;height:24px;position:absolute;top:14px;right:20px;transform:rotate(32deg);box-shadow:-19px 10px #db5f9a2e,8px 24px #8d6bd821}[data-theme=rose] :is(.primary-action,.command-button){background:linear-gradient(120deg,#e681ad,#dda7d5);border-radius:999px;box-shadow:0 10px 24px #be5b8f38,inset 0 2px #ffffff8c}[data-theme=rose] .module-icon{background:radial-gradient(circle at 34% 26%,#fff 0 8%,#0000 10%),linear-gradient(145deg,#f8d8e7,#e7c7ef);border-radius:50%;box-shadow:inset 0 0 0 4px #ffffff47,0 7px 14px #92527724}[data-theme=starfield] :is(.module-card,.tool-panel,.tool-control-card,.tool-workspace-card,.notice,.modal){background-image:linear-gradient(145deg,#69dfff12,#0000 38%),linear-gradient(#071622e0,#020a11eb);border-color:#69dfff3d;box-shadow:0 26px 66px #00040aa6,inset 0 1px #b7efff1a}[data-theme=starfield] :is(.primary-action,.command-button){color:#021016;background:linear-gradient(110deg,#78e5ff,#4ec9ed 58%,#b9edff);box-shadow:0 10px 30px #4ccaee40}.primary-tool button:not(.plain-button){border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:42px;color:var(--color-text);background:var(--color-canvas);padding:0 var(--space-4);transition:border-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);justify-content:center;align-items:center;font-weight:900;display:inline-flex}.primary-tool button:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas))}.primary-tool button[aria-pressed=true]{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas))}.primary-tool button:disabled{cursor:not-allowed;color:var(--color-muted);opacity:.45}.primary-tool .tool-control-card .inline-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.primary-tool .tool-control-card .inline-actions button{flex:110px;width:auto!important;padding:0 var(--space-3)!important}.primary-tool label{gap:var(--space-2);color:var(--color-muted);font-weight:900;display:grid}.primary-tool input,.primary-tool select{border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:42px;color:var(--color-text);background:var(--color-canvas);padding:0 var(--space-3);font-weight:800}.primary-tool select{--select-arrow-color:var(--color-muted);appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--select-arrow-color) 50%), linear-gradient(135deg, var(--select-arrow-color) 50%, transparent 50%);background-position:calc(100% - 17px) calc(50% - 1px),calc(100% - 13px) calc(50% - 1px);background-repeat:no-repeat;background-size:4px 4px;padding-right:32px}.primary-tool input[type=range]{min-height:28px;accent-color:var(--color-primary);padding:0}.tool-panel input[type=range].edge-aligned-range{appearance:none;background:linear-gradient(var(--color-border), var(--color-border)) center / calc(100% - 18px) 4px no-repeat;border:0;height:28px;min-height:28px}.tool-panel input[type=range].edge-aligned-range::-webkit-slider-runnable-track{background:0 0;border:0;height:4px}.tool-panel input[type=range].edge-aligned-range::-webkit-slider-thumb{appearance:none;border:2px solid var(--color-canvas);background:var(--color-primary);width:18px;height:18px;box-shadow:0 0 0 1px var(--color-primary);border-radius:50%;margin-top:-7px}.tool-panel input[type=range].edge-aligned-range::-moz-range-track{background:0 0;border:0;height:4px}.tool-panel input[type=range].edge-aligned-range::-moz-range-thumb{border:2px solid var(--color-canvas);background:var(--color-primary);width:18px;height:18px;box-shadow:0 0 0 1px var(--color-primary);border-radius:50%}.tool-panel input[type=range].edge-aligned-range:disabled{opacity:.48}.primary-tool input[type=checkbox]{width:18px;min-height:18px;accent-color:var(--color-primary)}.tool-workspace-card{min-height:420px}.control-stack{gap:var(--space-3);display:grid}.segmented.compact{border:1px solid var(--color-border);border-radius:var(--radius-sm);grid-template-columns:repeat(3,minmax(0,1fr));display:grid;overflow:hidden}.segmented.compact button{border:0;border-right:1px solid var(--color-border);min-height:38px;color:var(--color-muted);padding:0 var(--space-2);background:0 0;border-radius:0;font-weight:900}.segmented.compact button:last-child{border-right:0}.segmented.compact button[aria-pressed=true]{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent)}.segmented.compact.clock-mode-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.time-tool-tabs{margin-bottom:var(--space-4);grid-template-columns:repeat(2,minmax(0,180px))!important}.calendar-tool-panel{width:min(var(--tool-panel-max-width), 100%)!important}.calendar-lab{gap:var(--space-4);display:grid}.calendar-topbar,.calendar-view-tabs,.month-calendar,.digital-calendar{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas)}.calendar-topbar{justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-3);display:flex}.calendar-presentation-tabs{width:min(100%,280px);grid-template-columns:repeat(2,minmax(0,1fr))!important}.calendar-selectors{justify-content:end;align-items:center;gap:var(--space-2);grid-template-columns:minmax(116px,1fr) minmax(106px,1fr) auto;width:min(100%,430px);display:grid}.calendar-selectors .themed-select{width:auto;min-width:0}.calendar-selectors .themed-select-trigger{min-height:38px}.calendar-today-button{min-height:38px!important}.calendar-view-tabs{align-items:center;gap:var(--space-2);padding:var(--space-3);display:flex}.calendar-view-tabs button{min-height:36px!important}.calendar-view-tabs p{align-items:center;gap:var(--space-2);color:var(--color-muted);margin:0 0 0 auto;font-size:13px;font-weight:700;display:flex}.calendar-view-tabs p svg{width:17px;color:var(--color-primary)}.year-calendar-grid{gap:var(--space-3);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.mini-month-card{align-content:start;gap:var(--space-2);text-align:left;border-color:var(--color-border)!important;background:var(--color-canvas)!important;min-height:176px!important;padding:var(--space-3)!important;display:grid!important}.mini-month-card>strong{color:var(--color-text);font-size:15px}.mini-month-card.selected{box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 40%, transparent);border-color:var(--color-primary)!important}.mini-month-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:2px;width:100%;display:grid}.mini-month-grid i{min-height:16px;color:var(--color-muted);font-variant-numeric:tabular-nums;place-items:center;font-size:9px;font-style:normal;display:grid}.mini-month-grid i:nth-child(-n+7){color:color-mix(in srgb, var(--color-text) 80%, var(--color-muted));font-size:8px;font-weight:800}.mini-month-grid i.muted{opacity:0}.mini-month-grid i.today{color:var(--color-primary);font-weight:900}.mini-month-grid i.selected{background:var(--color-primary);color:var(--color-canvas);border-radius:50%;font-weight:900}.mini-month-grid i.has-event{color:var(--color-warning);font-weight:900}.month-calendar{overflow:hidden}.month-calendar>header{padding:var(--space-4);border-bottom:1px solid var(--color-border);text-align:center;grid-template-columns:48px 1fr 48px;align-items:center;display:grid}.month-calendar>header p{color:var(--color-muted);margin:0;font-size:13px;font-weight:800}.month-calendar>header h2{margin:2px 0 0;font-size:25px}.calendar-icon-button{min-height:38px!important;padding:0!important}.calendar-icon-button svg{width:20px}.month-weekdays,.month-days-grid{grid-template-columns:repeat(7,minmax(0,1fr));display:grid}.month-weekdays{border-bottom:1px solid var(--color-border);background:color-mix(in srgb, var(--color-surface) 55%, var(--color-canvas))}.month-weekdays span{padding:var(--space-2);color:var(--color-muted);text-align:center;font-size:12px;font-weight:900}.month-days-grid{min-height:420px}.month-day{text-align:left;align-content:start;justify-items:start;border:0!important;border-right:1px solid var(--color-border)!important;border-bottom:1px solid var(--color-border)!important;min-height:70px!important;padding:var(--space-2)!important;background:0 0!important;border-radius:0!important;display:grid!important}.month-day:nth-child(7n){border-right:0!important}.month-day strong{color:var(--color-text);font-variant-numeric:tabular-nums;font-size:17px}.month-day small{min-height:16px;color:var(--color-warning);font-size:10px;font-weight:800;line-height:1.25}.month-day.outside{cursor:default;opacity:.25}.month-day.today{box-shadow:inset 0 0 0 2px var(--color-primary)}.month-day.selected{box-shadow:inset 0 0 0 2px var(--color-primary);background:color-mix(in srgb, var(--color-primary) 14%, var(--color-canvas))!important}.month-day.selected strong{color:var(--color-primary)}.month-calendar footer{gap:var(--space-3);padding:var(--space-3) var(--space-4);color:var(--color-muted);flex-wrap:wrap;font-size:12px;font-weight:800;display:flex}.calendar-legend{align-items:center;gap:6px;display:inline-flex}.calendar-legend:before{border:1px solid var(--color-border);content:"";border-radius:3px;width:10px;height:10px}.calendar-legend.today:before{border:2px solid var(--color-primary)}.calendar-legend.selected:before{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 24%, var(--color-canvas))}.calendar-legend.event:before{border-color:var(--color-warning);background:var(--color-warning)}.digital-calendar{border-color:color-mix(in srgb, var(--color-primary) 36%, var(--color-border));border-radius:calc(var(--radius-md) + var(--space-2));background:color-mix(in srgb, var(--color-canvas) 88%, var(--color-bg));box-shadow:0 18px 50px color-mix(in srgb, var(--color-bg) 54%, transparent);overflow:hidden}.digital-calendar-stage{background:color-mix(in srgb, var(--color-bg) 78%, var(--color-canvas));min-height:456px;padding:clamp(30px,5vw,58px) clamp(18px,5vw,66px) 38px;position:relative;overflow:hidden}.digital-calendar-stage>p{margin:0 0 var(--space-3);color:color-mix(in srgb, var(--color-text) 64%, var(--color-muted));letter-spacing:.08em;text-align:center;font-size:13px;font-weight:800}.digital-wheel-picker{font-variant-numeric:tabular-nums;grid-template-columns:1.55fr 1fr 1fr;justify-content:center;width:min(760px,100%);height:288px;margin:0 auto;display:grid;position:relative}.digital-wheel-picker:after{z-index:4;background:color-mix(in srgb, var(--color-text) 28%, transparent);content:"";pointer-events:none;height:1px;position:absolute;top:50%;left:0;right:0}.calendar-wheel-wrap{height:288px;position:relative;overflow:hidden}.calendar-wheel-wrap:after{z-index:3;background:color-mix(in srgb, var(--color-text) 12%, transparent);content:"";pointer-events:none;width:1px;position:absolute;top:34px;bottom:34px;right:0}.calendar-wheel-wrap:last-child:after{display:none}.calendar-wheel{scroll-snap-type:y mandatory;scrollbar-width:none;overscroll-behavior:contain;height:288px;overflow-y:auto}.calendar-wheel::-webkit-scrollbar{display:none}.calendar-wheel>i,.calendar-wheel button{width:100%;height:96px;color:color-mix(in srgb, var(--color-text) 22%, var(--color-muted));letter-spacing:-.055em;scroll-snap-align:center;transition:color var(--duration-fast) var(--ease-standard);place-items:center;font-size:clamp(44px,6vw,76px);font-weight:700;line-height:1;display:grid;background:0 0!important;border:0!important;border-radius:0!important;min-height:96px!important}.calendar-wheel-wrap:first-child button{letter-spacing:-.035em;font-size:clamp(34px,4.8vw,58px)}.calendar-wheel button[aria-selected=true]{text-shadow:none;font-weight:800;color:color-mix(in srgb, var(--color-text) 91%, var(--color-primary))!important}.calendar-wheel button:hover{color:color-mix(in srgb, var(--color-text) 92%, var(--color-primary))!important}.calendar-wheel-unit{z-index:5;color:color-mix(in srgb, var(--color-text) 54%, var(--color-muted));pointer-events:none;font-size:14px;font-weight:800;position:absolute;top:50%;right:clamp(8px,2vw,22px);transform:translateY(-50%)}.digital-weekday{margin-top:var(--space-3);color:color-mix(in srgb, var(--color-text) 88%, var(--color-text));letter-spacing:.02em;text-align:center;font-size:16px;font-weight:800}.digital-weekday em{margin-top:var(--space-1);color:color-mix(in srgb, var(--color-primary) 78%, var(--color-text));font-size:13px;font-style:normal;display:block}.digital-date-controls{background:var(--color-border);grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;display:grid}.digital-date-controls button{background:color-mix(in srgb, var(--color-canvas) 94%, var(--color-primary))!important;border:0!important;border-radius:0!important;min-height:56px!important}.digital-date-controls button svg{width:17px}.digital-calendar-note{padding:var(--space-3) var(--space-4);color:var(--color-muted);margin:0;font-size:13px;line-height:1.6}.primary-tool .tool-control-card .clock-actions{grid-template-columns:repeat(auto-fit,minmax(118px,1fr));display:grid}.primary-tool .tool-control-card .clock-actions button{flex:none;width:100%!important}.check-row{grid-template-columns:18px 1fr;align-items:center}.metric-row{align-items:baseline;gap:var(--space-3);margin-bottom:var(--space-4);display:flex}.metric-row strong{color:var(--color-primary);font-size:clamp(36px,6vw,72px);line-height:1}.metric-row span{color:var(--color-muted);font-weight:900}.case-grid,.place-case-grid{gap:var(--space-2);grid-template-columns:repeat(auto-fit,minmax(112px,1fr));display:grid}.case-grid span,.place-case-grid article{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-2) var(--space-3);color:var(--color-text);font-weight:900}.place-case-grid article{gap:2px;display:grid}.place-case-grid span,.step-list,.clock-answer span{color:var(--color-muted)}.place-value-table{gap:var(--space-3);margin-bottom:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.place-value-table>div{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-3)}.place-value-table span{color:var(--color-muted);font-weight:800;display:block}.place-value-table strong{font-size:36px}.base-ten-stage{align-content:flex-start;gap:var(--space-2);min-height:140px;margin-bottom:var(--space-4);flex-wrap:wrap;display:flex}.ten-rod{border:1px solid var(--color-primary);border-radius:999px;grid-template-rows:repeat(10,8px);gap:2px;padding:4px;display:grid}.ten-rod i,.one-cube{background:var(--color-primary);border-radius:50%;width:8px;height:8px}.one-cube{align-self:flex-start;width:18px;height:18px}.step-list{padding-left:var(--space-5);margin:0;line-height:1.8}.clock-board{justify-items:center;gap:var(--space-4);display:grid}.clock-lab-layout{grid-template-columns:minmax(0,1fr)}.clock-control-strip{grid-template-columns:minmax(440px,1.4fr) repeat(2,minmax(220px,.8fr)) auto;align-items:end}.clock-control-strip .clock-mode-tabs{align-self:end}.clock-control-strip .control-stack{display:contents}.clock-control-strip .clock-actions{align-self:end}.clock-time-control>span{justify-content:space-between;align-items:baseline;gap:var(--space-2);display:flex}.clock-time-control output{color:var(--color-primary);font-variant-numeric:tabular-nums}.clock-precise-input,.clock-minute-input input,.clock-second-input input{border:1px solid color-mix(in srgb, var(--color-primary) 44%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-surface) 82%, transparent);width:84px;min-height:32px;color:var(--color-primary);font:inherit;font-variant-numeric:tabular-nums;padding:0 var(--space-2);text-align:center;transition:border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);font-weight:800;line-height:1}.clock-precise-input:hover,.clock-minute-input input:hover,.clock-second-input input:hover{border-color:var(--color-primary)}.clock-precise-input:focus-visible,.clock-minute-input input:focus-visible,.clock-second-input input:focus-visible{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent);outline:none}.clock-minute-input,.clock-second-input{align-items:center;gap:var(--space-1);display:inline-flex}.clock-minute-input input,.clock-second-input input{width:62px}.clock-minute-input em,.clock-second-input em{color:var(--color-muted);font-size:12px;font-style:normal;font-weight:700}.clock-range-ends{color:var(--color-muted);font-variant-numeric:tabular-nums;justify-content:space-between!important;display:flex!important}.clock-range-ends small{font-size:11px;font-weight:600}.clock-mode-tabs{grid-template-columns:repeat(4,minmax(0,1fr))!important}.segmented.compact.clock-mode-tabs button{min-height:40px;padding-inline:10px;font-size:14px}.clock-estimate-actions{gap:var(--space-2);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.clock-estimate-actions button{width:100%;padding-inline:var(--space-2)!important}.clock-estimate-help{color:var(--color-muted);margin:0;font-size:12px;line-height:1.6}.blind-stopwatch{gap:var(--space-4);width:100%;display:grid}.blind-stopwatch>header{justify-content:space-between;align-items:end;gap:var(--space-3);border-bottom:1px solid var(--color-border);padding-bottom:var(--space-3);display:flex}.blind-stopwatch>header>div{gap:2px;display:grid}.blind-stopwatch>header span,.blind-stopwatch>header p{color:var(--color-muted);font-size:12px;font-weight:800}.blind-stopwatch>header strong{color:var(--color-primary);font-size:24px}.blind-stopwatch>header p{margin:0}.blind-stopwatch-stage{place-items:center;gap:clamp(var(--space-4), 5vw, var(--space-7));border:1px solid color-mix(in srgb, var(--color-primary) 22%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-bg) 72%, var(--color-canvas));min-height:300px;padding:clamp(var(--space-4), 4vw, var(--space-6));grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.blind-analog-mask{aspect-ratio:1;border:3px solid color-mix(in srgb, var(--color-muted) 48%, var(--color-border));background:radial-gradient(circle, color-mix(in srgb, var(--color-surface) 82%, var(--color-bg)) 0 57%, transparent 58%), repeating-conic-gradient(from -1deg, color-mix(in srgb, var(--color-muted) 55%, transparent) 0 2deg, transparent 2deg 30deg);width:min(250px,100%);box-shadow:inset 0 0 0 14px color-mix(in srgb, var(--color-bg) 75%, transparent);border-radius:50%;place-items:center;display:grid;position:relative}.blind-analog-mask i{background:color-mix(in srgb, var(--color-muted) 22%, transparent);transform-origin:50% 100%;border-radius:999px;width:2px;height:34%;position:absolute}.blind-analog-mask i:first-child{transform:translateY(-50%)rotate(0)}.blind-analog-mask i:nth-child(2){transform:translateY(-50%)rotate(120deg)}.blind-analog-mask i:nth-child(3){transform:translateY(-50%)rotate(240deg)}.blind-analog-mask strong{z-index:2;background:var(--color-canvas);width:68px;height:68px;color:var(--color-primary);border-radius:50%;place-items:center;font-size:40px;display:grid;position:relative}.blind-digital-mask{aspect-ratio:1.55;place-content:center;justify-items:center;gap:var(--space-2);border:1px solid color-mix(in srgb, var(--color-text) 18%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-bg) 84%, var(--color-canvas));width:min(330px,100%);box-shadow:0 18px 42px color-mix(in srgb, var(--color-bg) 45%, transparent);display:grid}.blind-digital-mask small{color:var(--color-muted);letter-spacing:.08em;font-size:11px;font-weight:800}.blind-digital-mask strong{color:color-mix(in srgb, var(--color-text) 90%, var(--color-primary));font-variant-numeric:tabular-nums;letter-spacing:-.045em;font-size:clamp(38px,6vw,72px)}.blind-stopwatch.running .blind-stopwatch-stage{border-color:color-mix(in srgb, var(--color-primary) 55%, var(--color-border))}.blind-stopwatch.running .blind-analog-mask{animation:blind-timer-pulse 1.4s var(--ease-standard) infinite}@keyframes blind-timer-pulse{50%{border-color:var(--color-primary);box-shadow:inset 0 0 0 14px color-mix(in srgb, var(--color-bg) 75%, transparent), 0 0 0 7px color-mix(in srgb, var(--color-primary) 10%, transparent)}}.stopwatch-mark-summary{justify-content:space-between;align-items:baseline;gap:var(--space-3);display:flex}.stopwatch-mark-summary>strong{color:var(--color-text);font-size:16px}.stopwatch-mark-summary>span{color:var(--color-muted);font-size:12px}.stopwatch-mark-list{gap:var(--space-2);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin:0;padding:0;list-style:none;display:grid}.stopwatch-mark-list li{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-3);gap:3px;display:grid}.stopwatch-mark-list li b{background:var(--color-primary);width:max-content;color:var(--color-bg);border-radius:999px;padding:3px 8px;font-size:12px}.stopwatch-mark-list li strong{color:var(--color-text);font-variant-numeric:tabular-nums;font-size:18px}.stopwatch-mark-list li span{color:var(--color-muted);font-size:11px}.stopwatch-empty-marks{border:1px dashed var(--color-border);border-radius:var(--radius-sm);color:var(--color-muted);padding:var(--space-4);text-align:center}.clock-face{width:min(360px,100%);max-height:360px}.clock-face circle:first-child{fill:var(--color-surface);stroke:var(--color-border);stroke-width:3px}.clock-face text{fill:var(--color-text);text-anchor:middle;font-size:15px;font-weight:900}.clock-face line{stroke-linecap:round}.hour-hand{stroke:var(--color-secondary);stroke-width:8px}.minute-hand{stroke:var(--color-primary);stroke-width:5px}.clock-face circle:last-child{fill:var(--color-text)}.clock-moment{place-items:center;gap:clamp(var(--space-3), 3vw, var(--space-6));row-gap:var(--space-2);grid-template-rows:auto auto;grid-template-columns:minmax(180px,1fr) minmax(170px,.82fr);width:min(760px,100%);display:grid}.clock-analog-panel{justify-items:center;min-width:0;display:grid}.clock-moment .clock-face{width:min(300px,100%)}.clock-period-badge{border:1px solid color-mix(in srgb, var(--color-primary) 42%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas));border-radius:999px;grid-area:2/1;place-items:center;padding:3px;display:inline-grid}.clock-period-badge strong{background:var(--color-primary);color:var(--color-bg);border-radius:999px;padding:4px 9px;font-size:13px}.digital-clock-answer{grid-area:1/2;width:100%;min-width:0;position:relative}.digital-clock-answer .digital-clock-display{grid-area:auto}.digital-clock-mask{border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-canvas) 94%, var(--color-bg));color:var(--color-muted);place-items:center;font-size:54px;font-weight:800;display:grid;position:absolute;inset:0}.digital-clock-display{aspect-ratio:1.24;border:1px solid color-mix(in srgb, var(--color-text) 18%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-bg) 82%, var(--color-canvas));width:100%;min-width:0;box-shadow:0 18px 42px color-mix(in srgb, var(--color-bg) 45%, transparent);color:color-mix(in srgb, var(--color-text) 92%, var(--color-primary));grid-area:1/2;align-content:center;justify-items:center;display:grid;position:relative;overflow:hidden;container-type:inline-size}.digital-clock-display>small{margin-bottom:var(--space-2);color:color-mix(in srgb, var(--color-text) 54%, var(--color-muted));letter-spacing:.08em;font-size:11px;font-weight:800}.digital-clock-digits{font-variant-numeric:tabular-nums;place-items:center;width:100%;min-width:0;padding-inline:8%;display:grid}.digital-clock-digits strong{color:inherit;letter-spacing:-.065em;text-align:center;white-space:nowrap;max-width:100%;font-size:clamp(27px,25cqi,82px);font-weight:700;line-height:1}.digital-clock-digits i{color:color-mix(in srgb, var(--color-text) 72%, var(--color-muted));font-style:normal;font-weight:600}.clock-pair{align-items:center;gap:var(--space-4);grid-template-columns:minmax(0,1fr) 132px minmax(0,1fr);width:100%;display:grid}.clock-pair figure{justify-items:center;gap:var(--space-2);min-width:0;margin:0;display:grid}.clock-pair figcaption{color:var(--color-text);font-size:16px;font-weight:900}.clock-pair .clock-face{width:min(300px,100%)}.clock-pair .clock-moment{gap:var(--space-3);grid-template-columns:minmax(132px,1fr) minmax(120px,.8fr)}.clock-pair .digital-clock-digits strong{font-size:clamp(27px,25cqi,54px)}.clock-pair .digital-clock-display>small{font-size:9px}.clock-face-reveal{justify-items:center;width:100%;display:grid}.clock-question-face{aspect-ratio:1;border:3px dashed color-mix(in srgb, var(--color-primary) 48%, var(--color-border));width:min(300px,100%);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 7%, var(--color-surface));box-shadow:inset 0 0 0 10px color-mix(in srgb, var(--color-primary) 4%, transparent);border-radius:50%;place-items:center;font-size:72px;font-weight:900;display:grid}.clock-pair-arrow{justify-items:center;gap:var(--space-2);min-width:96px;color:var(--color-muted);font-variant-numeric:tabular-nums;font-size:12px;font-weight:800;display:grid}.clock-pair-arrow i{background:color-mix(in srgb, var(--color-primary) 58%, var(--color-border));width:100%;height:2px;display:block;position:relative}.clock-pair-arrow i:after{border-top:2px solid var(--color-primary);border-right:2px solid var(--color-primary);content:"";width:8px;height:8px;position:absolute;top:50%;right:-1px;transform:translateY(-50%)rotate(45deg)}.clock-answer{justify-items:center;gap:4px;display:grid}.clock-answer strong{font-size:42px}.clock-answer .answer-mask{border:1px dashed color-mix(in srgb, var(--color-primary) 55%, var(--color-border));border-radius:var(--radius-sm);width:78px;height:58px;color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, transparent);place-items:center;display:grid}.clock-lab-panel{width:min(var(--tool-panel-max-width), 100%)!important}.clock-time-ruler{--ruler-height:72px;--ruler-scale-top:34px;--ruler-label-top:38px;--ruler-marker-height:62px;--ruler-measure-height:8px;--ruler-indicator-width:1px;--ruler-indicator-top:29px;gap:var(--space-3);width:100%;margin-top:var(--space-2);padding-top:var(--space-3);border-top:1px solid var(--color-border);display:grid}.clock-time-ruler>header{justify-content:space-between;align-items:end;gap:var(--space-3);display:flex}.clock-time-ruler>header>div{gap:2px;display:grid}.clock-time-ruler>header strong{color:var(--color-text);font-size:15px}.clock-time-ruler>header small,.clock-time-ruler>header output{color:var(--color-muted);font-size:12px}.clock-time-ruler>header output{text-align:right;font-variant-numeric:tabular-nums;max-width:310px}.clock-time-ruler-scroll{scrollbar-color:color-mix(in srgb, var(--color-primary) 45%, var(--color-border)) transparent;scrollbar-width:thin;width:100%;padding:22px 4px;overflow:auto hidden}.clock-time-ruler-track{min-width:100%;height:var(--ruler-height);background:linear-gradient(to bottom, transparent var(--ruler-scale-top), color-mix(in srgb, var(--color-surface) 88%, var(--color-primary)) var(--ruler-scale-top));position:relative}.clock-time-ruler-track:before{inset:var(--ruler-scale-top) 0 0;border:1px solid var(--color-border);content:"";pointer-events:none;position:absolute}.clock-time-ruler-days{height:20px;display:flex;position:absolute;inset:-20px 0 auto;overflow:hidden}.clock-time-ruler-days span{border-right:1px solid var(--color-border);color:var(--color-muted);place-items:center;font-size:10px;font-weight:800;display:grid}.clock-time-ruler-hours,.clock-time-ruler-ticks{position:absolute;inset:0}.clock-time-ruler-hours span{top:var(--ruler-label-top);color:var(--color-text);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:10px;font-weight:800;line-height:12px;position:absolute;transform:translate(-50%)}.clock-time-ruler-hours span:first-child{transform:none}.clock-time-ruler-hours span:last-child{transform:translate(-100%)}.clock-time-ruler-ticks i{background:color-mix(in srgb, var(--color-border) 75%, var(--color-text));width:1px;height:10px;position:absolute;bottom:0}.clock-time-ruler-ticks i.major{background:var(--color-border);height:16px}.clock-time-ruler-measure{height:var(--ruler-measure-height);background:color-mix(in srgb, var(--color-primary) 72%, transparent);min-width:3px;box-shadow:0 0 0 4px color-mix(in srgb, var(--color-primary) 10%, transparent);border-radius:999px;position:absolute;bottom:2px}.clock-time-ruler-measure span{color:var(--color-primary);white-space:nowrap;font-size:10px;font-weight:900;position:absolute;top:14px;left:50%;transform:translate(-50%)}.clock-time-ruler-marker{height:var(--ruler-marker-height);color:var(--color-primary);font-variant-numeric:tabular-nums;align-content:start;justify-items:center;display:grid;position:absolute;top:0;transform:translate(-50%)}.clock-time-ruler-marker:after{top:var(--ruler-indicator-top);width:var(--ruler-indicator-width);background:color-mix(in srgb, currentColor 65%, transparent);pointer-events:none;content:"";position:absolute;bottom:0}.clock-time-ruler-marker b{font-size:11px;line-height:14px}.clock-time-ruler-marker span{white-space:nowrap;font-size:11px;line-height:14px}.clock-time-ruler-marker.end{color:var(--color-secondary)}.clock-time-ruler-track.markers-close .start>:is(b,span){right:calc(50% + var(--space-1));position:relative}.clock-time-ruler-track.markers-close .end>:is(b,span){left:calc(50% + var(--space-1));position:relative}.time-line{border-top:3px solid var(--color-border);width:min(460px,100%);height:42px;position:relative}.time-line span{border:1px solid var(--color-primary);background:var(--color-canvas);color:var(--color-primary);border-radius:999px;padding:3px 8px;font-size:11px;font-weight:900;position:absolute;top:-12px;transform:translate(-50%)}.direction-pad{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.direction-pad button:first-child,.direction-pad button:last-child{grid-column:2}.object-skin-select{min-width:140px}.split-lab-shell,.arithmetic-lab-shell{gap:var(--space-4);display:grid}.split-control-bar,.arithmetic-expression-panel,.arithmetic-animation-panel{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4)}.split-control-bar{align-items:end;gap:var(--space-3);grid-template-columns:150px 160px minmax(0,1fr);display:grid}.split-playback,.arithmetic-playback{gap:var(--space-2);grid-template-columns:minmax(140px,.8fr) minmax(280px,1.5fr) minmax(140px,.8fr);display:grid}.playback-step-pair{border:1px solid var(--color-border);border-radius:var(--radius-sm);grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;min-width:0;display:grid;overflow:hidden}.primary-tool .playback-step-pair>button{border:0;border-radius:0;min-width:0}.primary-tool .playback-step-pair>button+button{border-left:1px solid var(--color-border)}.split-equation{justify-content:center;align-items:center;gap:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-height:86px;font-size:28px;display:flex}.split-equation strong{color:var(--color-text);font-size:42px}.split-equation b{color:var(--color-primary);font-size:38px}.split-animation-stage{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);grid-template-columns:repeat(2,minmax(0,1fr));gap:8%;min-height:300px;display:grid;position:relative;overflow:visible}.split-zone{align-content:start;gap:var(--space-3);border:1px dashed var(--color-border);border-radius:var(--radius-sm);min-width:0;padding:var(--space-3);display:grid}.split-zone:first-of-type{background:color-mix(in srgb, var(--color-primary) 6%, transparent)}.split-zone:nth-of-type(2){background:color-mix(in srgb, var(--color-secondary) 6%, transparent)}.split-zone>header{justify-content:space-between;align-items:center;display:flex}.split-zone strong{color:var(--color-muted);font-size:12px}.split-zone span{color:var(--color-text);font-size:26px;font-weight:900}.split-object-grid{align-items:center;gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(40px,1fr));display:grid}.split-moving-object{z-index:3;will-change:transform;justify-self:start;place-items:center;width:42px;height:42px;display:inline-grid;position:relative}.object-glyph{width:42px;height:42px;color:var(--color-primary);filter:drop-shadow(0 5px 7px color-mix(in srgb, var(--color-canvas) 36%, transparent));place-items:center;font-style:normal;display:inline-grid}.object-glyph svg{width:100%;height:100%}.object-glyph.skin-apple{color:var(--color-danger)}.object-glyph.skin-star{color:var(--color-secondary)}.object-glyph.skin-square{color:color-mix(in srgb, var(--color-primary) 78%, var(--color-text))}.object-glyph.compact{filter:none;width:11px;height:11px}.split-capture-flight{z-index:100;border:2px solid var(--color-primary);border-radius:var(--radius-sm);background:var(--color-surface);box-shadow:var(--shadow-lg);pointer-events:none;transform-origin:0 0;display:grid;position:fixed;overflow:hidden}.split-flight-equation{justify-content:center;align-items:center;gap:var(--space-3);font-size:24px;display:flex}.split-flight-equation b{color:var(--color-primary)}.split-flight-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:8%;min-height:0;display:grid}.split-snapshot-section{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-3);display:grid}.split-snapshot-section .panel-heading>span{color:var(--color-primary);font-weight:800}.split-snapshot-strip{gap:var(--space-2);grid-template-columns:repeat(auto-fill,220px);padding:3px;display:grid}.primary-tool .split-snapshot-strip>button{border-color:var(--color-border);background:var(--color-surface);text-align:center;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:5px;min-width:0;min-height:100px;padding:6px;display:flex}.split-snapshot-strip>button.active{border-color:var(--color-primary);color:var(--color-primary)}.split-snapshot-strip>button.newest{animation:split-snapshot-arrive .42s var(--ease-standard) both}.split-snapshot-strip>button.snapshot-pending{visibility:hidden}.split-snapshot-viewport{width:208px;height:58px;position:relative;overflow:hidden}.split-snapshot-visual{transform-origin:0 0;grid-template-columns:repeat(2,minmax(0,1fr));gap:8%;width:1040px;height:290px;display:grid;position:absolute;top:0;left:0;transform:scale(.2)}.split-snapshot-visual .split-zone{gap:var(--space-3);padding:var(--space-3)}.split-snapshot-visual .split-zone header strong{font-size:12px}.split-snapshot-visual .split-zone header span{font-size:26px}.split-snapshot-visual .split-object-grid{gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(40px,1fr))}.split-snapshot-visual .object-glyph{width:42px;height:42px}.split-snapshot-equation{border-top:1px solid var(--color-border);width:100%;padding-top:var(--space-2);text-align:center;margin-top:auto;font-size:14px;line-height:1.2;display:block}.math-object{border:2px solid color-mix(in srgb, var(--color-text) 34%, transparent);background:var(--color-primary);width:30px;height:30px;color:var(--color-canvas);place-items:center;font-size:20px;font-style:normal;font-weight:900;display:inline-grid}.math-object.skin-circle{border-radius:50%}.math-object.skin-square{border-radius:3px}.math-object.skin-apple{background:var(--color-danger);border-radius:48% 48% 52% 52%;position:relative}.math-object.skin-apple:before{background:var(--color-status-success);content:"";border-radius:8px 0;width:9px;height:7px;position:absolute;top:-7px;transform:rotate(-24deg)}.math-object.skin-star{color:var(--color-secondary);background:0 0;border:0}.operation-family-shell{gap:var(--space-4);min-width:0;display:grid}.operation-family-tabs{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);grid-template-columns:repeat(2,minmax(0,1fr));justify-self:center;width:min(420px,100%);display:grid;overflow:hidden}.operation-family-tabs button{border:0;border-right:1px solid var(--color-border);min-height:42px;color:var(--color-muted);background:0 0;font-weight:900}.operation-family-tabs button:last-child{border-right:0}.operation-family-tabs button.active{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent)}.operation-family-view{min-width:0}.operation-family-view[hidden]{display:none!important}.multiplicative-heading-controls{justify-content:end;align-items:end;gap:var(--space-2);flex-wrap:wrap;display:flex}.division-meaning-select{min-width:156px}.multiplicative-expression .arithmetic-editor-item{grid-template-columns:max-content}.multiplicative-expression .arithmetic-start-card,.multiplicative-expression .arithmetic-term{flex-basis:176px;width:176px}.multiplicative-object-stage .arithmetic-operation-pair{min-height:280px}.multiplicative-result-zone,.multiplicative-loose-zone{align-content:start}.arithmetic-equal-groups{align-content:start;gap:var(--space-3);grid-template-columns:repeat(auto-fit,minmax(126px,1fr));display:grid}.multiplicative-group-frame{align-content:start;gap:var(--space-2);border:2px solid color-mix(in srgb, var(--color-primary) 70%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 7%, var(--color-canvas));min-width:0;min-height:126px;box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--color-primary) 5%, transparent);padding:var(--space-2);display:grid}.multiplicative-group-frame.waiting{box-shadow:none;background:0 0;border-style:dashed}.multiplicative-group-frame>header{justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.multiplicative-group-frame>header span{color:var(--color-muted);font-size:11px;font-weight:800}.multiplicative-group-frame>header strong{color:var(--color-primary);font-size:18px}.multiplicative-group-frame>div,.multiplicative-loose-objects{grid-template-columns:repeat(auto-fill,34px);align-content:start;gap:8px;display:grid}.multiplicative-object{place-items:center;width:34px;height:34px;display:inline-grid}.multiplicative-object .object-glyph{filter:none;width:34px;height:34px}.division-source-slots{grid-auto-rows:34px}.division-source-slot{place-items:center;width:34px;height:34px;display:grid}.division-source-slot.empty{visibility:hidden}.division-source-object.selected .object-glyph,.division-arriving-object .object-glyph{outline:2px solid color-mix(in srgb, var(--color-secondary) 88%, white);outline-offset:2px;box-shadow:none}.multiplicative-group-frame.latest{border-color:var(--color-secondary)}.multiplicative-template-zone .multiplicative-group-frame{justify-self:center;width:min(230px,100%)}.multiplicative-loose-zone.remainder{border-color:color-mix(in srgb, var(--color-secondary) 70%, var(--color-border));background:color-mix(in srgb, var(--color-secondary) 8%, var(--color-canvas))}.multiplicative-loose-zone.remainder>header strong,.multiplicative-loose-zone.remainder>b{color:var(--color-secondary)}.multiplicative-loose-zone>b{font-size:13px}.multiplicative-relation-card{grid-template-columns:minmax(220px,.46fr) minmax(0,1.54fr)}.multiplicative-relation-equation{justify-content:center;align-items:center;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-width:0;padding:var(--space-3);flex-wrap:wrap;display:flex}.multiplicative-relation-equation b{color:var(--color-muted)}.multiplicative-relation-equation span{color:var(--color-muted);font-size:20px}.multiplicative-relation-equation strong{color:var(--color-primary);font-size:22px}.arithmetic-expression-panel{gap:var(--space-3);display:grid}.arithmetic-expression{border-top:1px solid var(--color-border);padding-top:var(--space-3);flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.arithmetic-start-card,.arithmetic-term,.arithmetic-equation-result{min-width:0}.arithmetic-editor-item{min-width:0;transition:grid-template-columns .19s var(--ease-standard), gap .19s var(--ease-standard);grid-template-columns:max-content minmax(0,0fr);align-items:end;gap:0;display:grid}.arithmetic-editor-item:has(.arithmetic-insert-step:is(:hover,:focus-visible):not(:disabled)){grid-template-columns:max-content minmax(0,176px);gap:12px}.arithmetic-start-card,.arithmetic-term{isolation:isolate;align-content:start;gap:6px;display:grid;position:relative}.arithmetic-start-card{flex:0 0 150px;width:150px}.arithmetic-start-header>span:first-child,.arithmetic-step-label,.arithmetic-equation-result small{color:var(--color-muted);font-size:11px;font-weight:800}.arithmetic-start-header,.arithmetic-step-header{justify-content:space-between;align-items:center;gap:var(--space-2);min-height:26px;display:flex}.arithmetic-start-card input,.arithmetic-term select,.arithmetic-term input{box-sizing:border-box;text-align:center;min-width:0;height:48px;min-height:48px;padding:8px 10px}.arithmetic-term select{text-align-last:center;padding-right:26px}.arithmetic-start-card.active input,.arithmetic-term.active .arithmetic-term-controls{border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 12%, transparent);box-shadow:0 0 0 2px var(--color-primary), 0 8px 18px color-mix(in srgb, var(--color-primary) 16%, transparent)}.arithmetic-term.active select,.arithmetic-term.active input{border-color:color-mix(in srgb, var(--color-primary) 58%, var(--color-border));background-color:color-mix(in srgb, var(--color-primary) 9%, var(--color-canvas))}.arithmetic-term.active select{--select-arrow-color:var(--color-primary)}.arithmetic-start-card.active .arithmetic-start-header>span:first-child,.arithmetic-term.active .arithmetic-step-label{color:var(--color-primary)}.arithmetic-term{flex:0 0 176px;width:176px}.arithmetic-term:before{z-index:-1;border-radius:var(--radius-sm);box-shadow:none;content:"";opacity:0;transition:opacity .18s var(--ease-standard), transform .18s var(--ease-standard), background .18s var(--ease-standard), border-color .18s var(--ease-standard), box-shadow .18s var(--ease-standard);background:0 0;border:1px solid #0000;position:absolute;inset:-6px;transform:translateY(0)}.arithmetic-term:has(.arithmetic-delete-step:is(:hover,:focus-visible):not(:disabled)):before{border-color:color-mix(in srgb, var(--color-danger) 76%, var(--color-border));background:color-mix(in srgb, var(--color-danger) 9%, var(--color-canvas));box-shadow:0 8px 22px color-mix(in srgb, var(--color-danger) 20%, transparent), 0 0 0 3px color-mix(in srgb, var(--color-danger) 9%, transparent);opacity:1;transform:translateY(-2px)}.arithmetic-term-controls{height:48px;transition:background var(--duration-normal) var(--ease-standard), box-shadow var(--duration-normal) var(--ease-standard);grid-template-columns:58px minmax(0,1fr);align-items:center;gap:6px;display:grid;position:relative}.arithmetic-structure-actions{align-items:center;gap:4px;display:flex}.primary-tool .arithmetic-insert-step,.primary-tool .arithmetic-delete-step{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);transition:border-color .16s var(--ease-standard), color .16s var(--ease-standard), background .16s var(--ease-standard), box-shadow .16s var(--ease-standard);flex:0 0 24px;place-items:center;gap:0;line-height:1;width:24px!important;min-width:24px!important;height:24px!important;min-height:24px!important;padding:0!important;display:grid!important}.primary-tool .arithmetic-insert-step{color:var(--color-primary)}.primary-tool .arithmetic-delete-step{border-color:color-mix(in srgb, var(--color-danger) 56%, var(--color-border));color:var(--color-danger)}.primary-tool .arithmetic-insert-step svg,.primary-tool .arithmetic-delete-step svg{width:13px;height:13px;display:block}.primary-tool .arithmetic-insert-step:hover:not(:disabled),.primary-tool .arithmetic-insert-step:focus-visible{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 11%, var(--color-canvas));box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 12%, transparent)}.primary-tool .arithmetic-delete-step:hover:not(:disabled),.primary-tool .arithmetic-delete-step:focus-visible{border-color:var(--color-danger);background:color-mix(in srgb, var(--color-danger) 10%, var(--color-canvas));box-shadow:0 0 0 3px color-mix(in srgb, var(--color-danger) 10%, transparent)}.arithmetic-insert-preview{box-sizing:border-box;border:1px dashed color-mix(in srgb, var(--color-primary) 74%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas));width:176px;min-width:0;height:80px;box-shadow:0 8px 22px color-mix(in srgb, var(--color-primary) 15%, transparent), inset 0 0 0 3px color-mix(in srgb, var(--color-primary) 5%, transparent);opacity:0;transform-origin:0;transition:opacity .16s var(--ease-standard), transform .19s var(--ease-standard);white-space:nowrap;pointer-events:none;align-content:start;gap:6px;padding:6px;display:grid;overflow:hidden;transform:translate(-8px)scale(.97)}.arithmetic-editor-item:has(.arithmetic-insert-step:is(:hover,:focus-visible):not(:disabled)) .arithmetic-insert-preview{opacity:1;transform:translate(0)scale(1)}.arithmetic-insert-preview>span:first-child{color:var(--color-primary);font-size:11px;font-weight:800}.arithmetic-insert-preview-controls{grid-template-columns:58px minmax(0,1fr);gap:6px;height:48px;display:grid}.arithmetic-insert-preview-controls b,.arithmetic-insert-preview-controls strong{border:1px solid color-mix(in srgb, var(--color-primary) 45%, var(--color-border));border-radius:var(--radius-sm);background:var(--color-canvas);color:var(--color-primary);place-items:center;font-size:17px;display:grid}.arithmetic-equation-result{align-items:end;gap:var(--space-2);border-left:1px solid var(--color-border);min-height:48px;padding:0 0 1px var(--space-3);display:flex}.arithmetic-equation-result small{align-self:start;margin-top:1px}.arithmetic-equation-result span{color:var(--color-muted);font-size:24px;font-weight:800;line-height:1}.arithmetic-equation-result strong{color:var(--color-primary);font-size:32px;line-height:1}.arithmetic-animation-panel{gap:var(--space-3);display:grid}.arithmetic-live-bar{gap:var(--space-4);border-bottom:1px solid var(--color-border);padding:0 0 var(--space-3);grid-template-columns:minmax(0,1fr) auto;align-items:end;display:grid}.arithmetic-live-summary{gap:var(--space-2);grid-template-rows:62px 32px;min-width:0;display:grid}.arithmetic-stage-heading{gap:4px;min-height:62px;display:grid}.arithmetic-stage-heading>div{gap:2px;min-width:0;display:grid}.arithmetic-stage-heading strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.arithmetic-stage-heading small{color:var(--color-muted);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.arithmetic-live-equation{align-items:center;gap:var(--space-2);min-width:0;min-height:32px;color:var(--color-muted);flex-wrap:wrap;font-size:15px;font-weight:800;display:flex}.arithmetic-live-equation b{min-height:30px;color:var(--color-text);border:1px solid #0000;border-radius:999px;align-items:center;padding:3px 7px;font-weight:800;display:inline-flex}.arithmetic-live-equation b.active{border-color:color-mix(in srgb, var(--color-primary) 76%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 18%, transparent);box-shadow:inset 0 -2px 0 var(--color-primary), 0 0 0 3px color-mix(in srgb, var(--color-primary) 10%, transparent);color:var(--color-primary)}.arithmetic-live-equation strong{color:var(--color-primary)}.arithmetic-live-bar .arithmetic-playback{justify-content:end;align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.arithmetic-live-bar .arithmetic-playback>button{min-height:40px}.arithmetic-live-bar .playback-step-pair{order:-1}.arithmetic-vertical-toggle{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-height:40px;color:var(--color-muted);cursor:pointer;align-items:center;gap:8px;padding:7px 10px;display:inline-flex}.arithmetic-vertical-toggle input{opacity:0;pointer-events:none;height:1px;position:absolute;overflow:hidden;width:1px!important;min-height:0!important}.arithmetic-vertical-toggle>span{background:var(--color-border);width:30px;height:18px;transition:background var(--duration-fast) var(--ease-standard);border-radius:999px;display:block;position:relative}.arithmetic-vertical-toggle>span:after{background:var(--color-text);width:12px;height:12px;transition:transform var(--duration-fast) var(--ease-standard);content:"";border-radius:50%;position:absolute;top:3px;left:3px;transform:translate(0)}.arithmetic-vertical-toggle input:checked+span{background:var(--color-primary)}.arithmetic-vertical-toggle input:checked+span:after{background:var(--color-canvas);transform:translate(12px)}.arithmetic-vertical-toggle input:focus-visible+span{outline:2px solid var(--color-primary);outline-offset:3px}.arithmetic-vertical-toggle b{color:inherit;white-space:nowrap;font-size:12px}.arithmetic-vertical-toggle:has(input:checked){border-color:color-mix(in srgb, var(--color-primary) 58%, var(--color-border));color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 7%, var(--color-canvas))}.arithmetic-object-stage{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-height:520px;padding:var(--space-4);grid-template-rows:minmax(250px,1fr) minmax(174px,auto);grid-template-columns:minmax(0,1fr);display:grid;position:relative;overflow:hidden}.arithmetic-operation-pair{gap:var(--space-3);grid-template-columns:minmax(0,1fr);min-width:0;min-height:0;display:grid}.arithmetic-operation-pair.has-operation{grid-template-columns:repeat(2,minmax(0,1fr))}.stage-badge{background:color-mix(in srgb, var(--color-primary) 12%, transparent);width:max-content;color:var(--color-primary);border-radius:999px;padding:3px 8px;font-size:11px;font-weight:800}.operation-zone{align-content:start;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-width:0;min-height:0;padding:var(--space-3);display:grid;position:relative;overflow:hidden}.operation-zone>header{justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.operation-zone>header span{color:var(--color-muted);font-size:12px;font-weight:800}.operation-zone>header strong{color:var(--color-primary);font-size:28px;line-height:1}.operation-zone.operation{border-style:dashed}.operation-zone.removed{border-color:color-mix(in srgb, var(--color-danger) 55%, var(--color-border));background:color-mix(in srgb, var(--color-danger) 5%, var(--color-canvas))}.operation-zone.source{border-color:color-mix(in srgb, var(--color-primary) 55%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 5%, var(--color-canvas))}.operation-zone.current{grid-template-rows:auto minmax(0,1fr);align-content:stretch}.operation-zone.current>.motion-object-columns{min-height:0;overflow:hidden}.motion-object-columns{align-content:start;gap:var(--space-4);min-height:0;display:grid}.motion-object-columns.places-1{grid-template-columns:minmax(0,1fr)}.motion-object-columns.places-2{grid-template-columns:repeat(2,minmax(0,1fr))}.motion-object-columns.places-3{grid-template-columns:repeat(3,minmax(0,1fr))}.operation-zone.current>.motion-object-columns.places-1{grid-template-columns:minmax(0,1fr)}.operation-zone.current>.motion-object-columns.places-2{grid-template-columns:repeat(2,minmax(0,1fr))}.operation-zone.current>.motion-object-columns.places-3{grid-template-columns:repeat(3,minmax(0,1fr))}.operation-zone.operation>.motion-object-columns{place-content:start stretch;gap:var(--space-4);width:100%}.operation-zone.operation>.motion-object-columns.places-1{grid-template-columns:minmax(0,1fr)}.operation-zone.operation>.motion-object-columns.places-2{grid-template-columns:repeat(2,minmax(0,1fr))}.operation-zone.operation>.motion-object-columns.places-3{grid-template-columns:repeat(3,minmax(0,1fr))}.motion-object-columns>section{align-content:start;gap:var(--space-2);min-width:0;min-height:0;display:grid;overflow:hidden}.operation-zone.removed .motion-object-columns>section,.operation-zone.source .motion-object-columns>section{background:0 0;border:0;padding:0}.motion-object-columns header{justify-content:flex-start;align-items:center;gap:8px;display:flex}.motion-object-columns header span{color:var(--color-muted);font-size:12px}.motion-object-columns header strong{color:var(--color-primary);font-size:20px}.motion-object-list{place-content:start;gap:9px;min-height:0;display:grid;overflow:hidden}.place-column.one .motion-object-list.density-normal,.place-column.ten .motion-object-list.density-normal{grid-template-columns:repeat(auto-fill,36px)}.place-column.hundred .motion-object-list.density-normal{grid-template-columns:repeat(auto-fill,54px)}.motion-object-list.density-compact{gap:6px}.place-column.one .motion-object-list.density-compact,.place-column.ten .motion-object-list.density-compact{grid-template-columns:repeat(auto-fill,28px)}.place-column.hundred .motion-object-list.density-compact{grid-template-columns:repeat(auto-fill,40px)}.motion-object-list.density-stack{width:100%;min-height:86px;display:block;position:relative;overflow:hidden}.motion-object-list.density-stack .arithmetic-object-slot{z-index:var(--stack-z);left:var(--stack-x);top:var(--stack-y);position:absolute}.arithmetic-object-slot{visibility:hidden;flex:none;display:block}.arithmetic-object-slot.one{width:36px;height:36px}.arithmetic-object-slot.ten{width:36px;height:70px}.arithmetic-object-slot.hundred{width:54px;height:54px}.arithmetic-object-slot.one.density-compact{width:28px;height:28px}.arithmetic-object-slot.ten.density-compact{width:28px;height:56px}.arithmetic-object-slot.hundred.density-compact{width:40px;height:40px}.arithmetic-floating-layer{z-index:60;pointer-events:none;position:absolute;inset:0;overflow:visible}.motion-arithmetic-object{z-index:1;will-change:top, left, transform;pointer-events:none;place-items:center;transition:top .82s cubic-bezier(.22,.8,.22,1),left .82s cubic-bezier(.22,.8,.22,1);display:inline-grid;position:absolute;top:0;left:0}.arithmetic-object-shape{grid-area:1/1;place-items:center;display:inline-grid}.motion-arithmetic-object.one.density-normal .object-glyph{width:36px;height:36px}.place-bundle{border:2px solid var(--color-primary);border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas));padding:4px;display:grid}.place-bundle.ten{grid-template-rows:repeat(5,10px);grid-template-columns:repeat(2,10px);place-content:center;gap:2px;width:36px;height:70px}.place-bundle.ten .object-glyph.compact{width:10px;height:10px}.place-bundle.hundred{place-items:center;width:54px;height:54px}.place-bundle.hundred b{color:var(--color-primary);font-size:13px}.motion-arithmetic-object.one.density-compact .object-glyph{width:28px;height:28px}.motion-arithmetic-object.ten.density-compact .place-bundle.ten{grid-template-rows:repeat(5,8px);grid-template-columns:repeat(2,8px);gap:1px;width:28px;height:56px}.motion-arithmetic-object.ten.density-compact .place-bundle.ten .object-glyph.compact{width:8px;height:8px}.motion-arithmetic-object.hundred.density-compact .place-bundle.hundred{width:40px;height:40px}.motion-arithmetic-object.status-marked{border-radius:var(--radius-sm);outline:3px solid var(--color-danger);outline-offset:3px;filter:drop-shadow(0 0 10px color-mix(in srgb, var(--color-danger) 68%, transparent))}.operation-zone.removed .motion-object-list{gap:14px}.motion-arithmetic-object.status-borrowed{filter:drop-shadow(0 0 10px color-mix(in srgb, var(--color-secondary) 68%, transparent))}.motion-arithmetic-object.status-incoming,.motion-arithmetic-object.status-returning{filter:drop-shadow(0 0 10px color-mix(in srgb, var(--color-primary) 58%, transparent))}.arithmetic-representation-row{z-index:12;gap:var(--space-3);grid-template-columns:minmax(0,1fr);min-width:0;display:grid;position:relative}.arithmetic-representation-row.split{grid-template-columns:minmax(0,.9fr) minmax(360px,1.1fr)}.motion-workbench{z-index:12;align-items:center;gap:var(--space-4);border:1px solid color-mix(in srgb, var(--color-secondary) 70%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-secondary) 5%, var(--color-canvas));min-height:174px;padding:var(--space-3);grid-template-columns:minmax(190px,.46fr) minmax(0,1.54fr);display:grid;position:relative}.arithmetic-representation-row.split .motion-workbench{align-items:start;gap:var(--space-2);grid-template-columns:minmax(0,1fr)}.arithmetic-representation-row.split .motion-workbench>header{grid-template-columns:minmax(0,1fr) auto;align-items:center}.arithmetic-representation-row.split .motion-workbench .motion-object-columns{gap:var(--space-2);grid-template-columns:repeat(auto-fit,minmax(100px,max-content));min-height:70px}.motion-workbench>header{align-content:center;min-width:0;display:grid}.motion-workbench>header>div{gap:3px;display:grid}.motion-workbench>header span{color:var(--color-secondary);font-size:13px;font-weight:800}.motion-workbench>header small{color:var(--color-muted);font-size:12px;line-height:1.45}.motion-workbench>header>strong{color:var(--color-secondary);font-size:28px}.motion-workbench.idle{border-color:color-mix(in srgb, var(--color-border) 82%, var(--color-secondary));background:color-mix(in srgb, var(--color-canvas) 88%, var(--color-secondary))}.motion-workbench-idle{border:1px dashed var(--color-border);border-radius:var(--radius-sm);min-height:96px;padding:var(--space-3);color:var(--color-muted);place-items:center start;font-size:13px;font-weight:700;display:grid}.motion-workbench .motion-object-columns{gap:var(--space-4);grid-template-columns:repeat(auto-fit,minmax(138px,max-content));min-height:96px;overflow:visible}.motion-workbench .motion-object-columns>section{padding:0}.motion-workbench .motion-object-list{grid-template-rows:none;grid-auto-flow:row;min-height:68px}.motion-workbench .place-column.one .motion-object-list{grid-template-columns:repeat(5,36px)}.motion-workbench .place-column.ten .motion-object-list{grid-template-columns:repeat(auto-fill,36px)}.motion-workbench .place-column.hundred .motion-object-list{grid-template-columns:repeat(auto-fill,54px)}.vertical-arithmetic{gap:var(--space-2);border:1px solid color-mix(in srgb, var(--color-primary) 45%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 4%, var(--color-canvas));min-width:0;min-height:174px;padding:var(--space-3);grid-template-rows:auto minmax(0,1fr);display:grid}.vertical-arithmetic>header{justify-content:space-between;align-items:start;gap:var(--space-2);display:flex}.vertical-arithmetic>header>div{gap:2px;display:grid}.vertical-arithmetic>header span{color:var(--color-primary);font-size:13px;font-weight:800}.vertical-arithmetic>header small{color:var(--color-muted);font-size:11px}.vertical-arithmetic>header>b{background:color-mix(in srgb, var(--color-primary) 12%, transparent);color:var(--color-primary);border-radius:999px;padding:3px 8px;font-size:11px}.vertical-math-grid{width:min(330px,100%);padding:0 var(--space-2) var(--space-2);border-bottom:0;grid-template-columns:28px repeat(3,minmax(64px,1fr));justify-self:center;align-items:end;display:grid;position:relative}.vertical-math-grid:after{right:var(--space-2);bottom:40px;left:calc(28px + var(--space-2));background:var(--color-text);opacity:.72;content:"";height:2px;position:absolute}.vertical-operator{color:var(--color-text);align-self:end;padding-bottom:47px;font-size:24px;font-weight:800;line-height:1}.vertical-place{border-radius:var(--radius-sm);transition:background var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);grid-template-rows:15px 18px 29px 29px 36px;place-items:center;display:grid;position:relative}.vertical-place.active{background:color-mix(in srgb, var(--color-primary) 10%, transparent);box-shadow:inset 0 -3px 0 color-mix(in srgb, var(--color-primary) 72%, transparent)}.vertical-place>small{color:var(--color-muted);font-size:10px;font-weight:800}.vertical-carry-space{min-height:18px;color:var(--color-danger);font-size:12px;line-height:1}.vertical-number{color:var(--color-text);font-variant-numeric:tabular-nums;font-size:22px;line-height:1}.vertical-number.minuend{justify-content:center;align-items:end;gap:2px;display:flex;position:relative}.vertical-number.minuend del{color:var(--color-muted);-webkit-text-decoration-color:var(--color-danger);text-decoration-color:var(--color-danger);text-decoration-thickness:2px}.vertical-number.minuend strong+strong,.vertical-number.minuend del+strong{color:var(--color-danger);font-size:14px}.vertical-number.result{color:var(--color-primary);align-self:end;font-size:24px}.arithmetic-progress{gap:5px;display:flex}.arithmetic-progress button{flex:1;background:var(--color-border)!important;border:0!important;border-radius:999px!important;min-width:0!important;min-height:7px!important;padding:0!important}.arithmetic-progress button.done{background:color-mix(in srgb, var(--color-primary) 45%, var(--color-border))!important}.arithmetic-progress button.active{background:var(--color-primary)!important}@keyframes operation-arrive{0%{opacity:0;transform:translate(35%)scale(.88)}to{opacity:1;transform:translate(0)scale(1)}}@keyframes operation-remove{0%{opacity:0;transform:translate(24%)scale(.88)}to{opacity:1;transform:translate(0)scale(1)}}@keyframes regroup-pulse{0%{transform:scale(.96)}to{transform:scale(1.04)}}@keyframes operation-mark{0%{filter:drop-shadow(0 0 2px color-mix(in srgb, var(--color-danger) 20%, transparent))}to{filter:drop-shadow(0 0 13px color-mix(in srgb, var(--color-danger) 76%, transparent))}}@keyframes objects-source-arrive{0%{opacity:0;transform:translate(52px)scale(.76)}to{opacity:1;transform:translate(0)scale(1)}}@keyframes objects-move-from-right{0%{opacity:0;transform:translate(160px)}to{opacity:1;transform:translate(0)}}@keyframes objects-move-to-left{0%{opacity:0;transform:translate(170px)}to{opacity:1;transform:translate(0)}}@keyframes objects-unbundle{0%{opacity:0;transform:translateY(-28px)scale(.22)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes objects-return{0%{opacity:0;transform:translateY(80px)scale(.8)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes arithmetic-fly-add{0%{opacity:1;transform:translate(0)scale(1)}to{opacity:1;transform:translate(-205%,45%)scale(.92)}}@keyframes arithmetic-fly-remove{0%{opacity:1;transform:translate(0)scale(1)}to{opacity:1;transform:translate(-185%,30%)scale(.9)}}@keyframes arithmetic-fly-borrow{0%{opacity:1;transform:translateY(-95%)scale(1)}to{opacity:1;transform:translateY(95%)scale(1)}}@keyframes arithmetic-fly-return{0%{opacity:1;transform:translate(0)scale(1)}to{opacity:1;transform:translateY(-170%)scale(1)}}@keyframes arithmetic-morph-source{0%{opacity:1;transform:scale(1)}65%,to{opacity:0;transform:scale(.08)}}@keyframes arithmetic-morph-target{0%,30%{opacity:0;transform:scale(.08)}to{opacity:1;transform:scale(1)}}@keyframes arithmetic-destination-reveal{0%,82%{opacity:0}to{opacity:1}}@keyframes split-snapshot-arrive{0%{opacity:0;transform:translateY(-14px)scale(1.12)}to{opacity:1;transform:translateY(0)scale(1)}}.vertical-lab{justify-self:center;width:min(1100px,100%);min-width:0;max-width:100%;overflow-x:clip}.vertical-lab-shell,.sudoku-shell{gap:var(--space-4);min-width:0;max-width:100%;display:grid}.vertical-lab>*,.vertical-lab-shell>*,.vertical-problem-editor>*,.vertical-teaching-stage>*{min-width:0;max-width:100%}.vertical-experience-tabs{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-border);grid-template-columns:repeat(2,minmax(0,1fr));justify-self:center;gap:1px;width:min(430px,100%);display:grid;overflow:hidden}.vertical-experience-tabs button{background:var(--color-canvas);min-height:46px;color:var(--color-muted);border:0;border-radius:0}.vertical-selector-panel{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-3) var(--space-4);grid-template-columns:auto minmax(0,1fr);align-items:end;gap:clamp(18px,3vw,42px);display:grid}.vertical-selector-panel>div{gap:7px;min-width:0;display:grid}.vertical-selector-panel>div>span{color:var(--color-muted);font-size:12px;font-weight:800}.vertical-experience-tabs{background:0 0;border:0;border-radius:0;grid-template-columns:repeat(2,minmax(110px,1fr));justify-self:stretch;gap:6px;width:auto;max-width:100%;display:grid;overflow:visible}.vertical-experience-tabs button{border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:42px;color:var(--color-muted);background:0 0}.vertical-experience-tabs button.active{border-color:color-mix(in srgb, var(--color-primary) 62%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas));color:var(--color-primary)}.vertical-mode-tabs,.sudoku-size-tabs{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-border);flex-wrap:wrap;gap:1px;width:max-content;max-width:100%;display:flex;overflow:hidden}.vertical-mode-tabs button,.sudoku-size-tabs button{background:var(--color-canvas);min-height:42px;color:var(--color-muted);border:0;border-radius:0;padding:8px 18px}.vertical-mode-tabs button.active,.sudoku-size-tabs button.active{background:color-mix(in srgb, var(--color-primary) 13%, var(--color-canvas));color:var(--color-primary)}.vertical-problem-editor{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-width:0;max-width:100%;padding:var(--space-4);display:grid}.vertical-number-kind{border:1px solid var(--color-border);border-radius:var(--radius-sm);grid-template-columns:1fr 1fr;width:min(260px,100%);display:grid;overflow:hidden}.vertical-number-kind button{border:0!important;border-right:1px solid var(--color-border)!important;background:0 0!important;border-radius:0!important}.vertical-number-kind button:last-child{border-right:0!important}.vertical-number-kind button[aria-pressed=true]{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent)!important}.vertical-input-group{align-items:end;gap:var(--space-3);grid-template-columns:minmax(0,1fr) 50px minmax(0,1fr);width:100%;min-width:0;max-width:100%;display:grid}.vertical-input-group.chain{grid-template-columns:minmax(0,1fr) 50px}.vertical-input-group label{min-width:0;color:var(--color-muted);gap:6px;font-size:12px;font-weight:800;display:grid}.vertical-input-group input,.vertical-chain-editor input,.vertical-chain-editor select{min-width:0;max-width:100%;min-height:48px}.vertical-input-group>span{width:50px;height:48px;color:var(--color-primary);place-items:center;font-size:25px;font-weight:900;display:grid}.vertical-chain-editor{gap:var(--space-3);border-top:1px solid var(--color-border);padding-top:var(--space-3);display:grid}.vertical-chain-heading{gap:2px;display:grid}.vertical-chain-heading small{color:var(--color-muted);font-size:12px}.vertical-chain-items{flex-wrap:wrap;align-items:end;gap:12px;display:flex}.vertical-chain-term{width:176px}.vertical-teaching-stage{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);width:100%;min-width:0;max-width:100%;padding:var(--space-4);display:grid}.vertical-step-bar{align-items:center;gap:var(--space-4);border-bottom:1px solid var(--color-border);min-height:96px;padding-bottom:var(--space-3);grid-template-columns:minmax(0,1fr) auto;display:grid}.vertical-step-bar>div:first-child{gap:4px;min-width:0;display:grid}.vertical-step-bar span{color:var(--color-primary);font-size:12px;font-weight:800}.vertical-step-bar strong{font-size:20px}.vertical-step-bar small{color:var(--color-muted);line-height:1.5}.vertical-playback{align-items:center;gap:1px;display:flex}.vertical-playback button{border-radius:0;align-items:center;gap:6px;min-height:44px;display:inline-flex}.vertical-playback button:first-child{border-radius:var(--radius-sm) 0 0 var(--radius-sm)}.vertical-playback button:last-child{border-radius:0 var(--radius-sm) var(--radius-sm) 0}.vertical-playback svg,.sudoku-actions svg{width:16px;height:16px}.vertical-board-wrap{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);scrollbar-width:thin;place-items:center;width:100%;max-width:100%;height:clamp(480px,58vh,620px);min-height:0;padding:clamp(18px,3vw,32px);display:grid;overflow:auto hidden}.vertical-board-wrap.division-stage{height:auto;min-height:clamp(480px,58vh,620px);overflow-y:visible}.decimal-vertical-board{width:min(460px,100%);color:var(--color-text);font-variant-numeric:tabular-nums;justify-items:stretch;gap:8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(34px,5vw,52px);display:grid}.decimal-column-row{justify-content:flex-end;align-items:center;gap:24px;min-height:1.1em;display:flex}.decimal-column-row.operator{width:100%}.decimal-column-row.operator b{color:var(--color-muted);margin-right:auto}.decimal-number{align-items:baseline;display:inline-flex}.decimal-number i{width:.32em;color:var(--color-primary);text-align:center;font-size:1em;font-style:normal;line-height:1}.aligned-decimal-number{grid-template-columns:repeat(var(--decimal-integer-columns), .72em) .28em repeat(var(--decimal-fraction-columns), .72em);justify-content:end;align-items:baseline;display:grid}.aligned-decimal-number>span{text-align:center;display:block}.aligned-decimal-number>span.active{border-radius:var(--radius-xs);color:var(--color-bg);background:var(--color-primary)}.aligned-decimal-number>i{color:var(--color-primary);text-align:center;font-style:normal;line-height:1}.aligned-decimal-number.integer{grid-template-columns:repeat(var(--decimal-integer-columns), .72em)}.decimal-rule{background:var(--color-text);width:100%;height:3px}.decimal-partial-rows{justify-items:end;gap:4px;width:100%;display:grid}.decimal-partial-rows span:nth-child(n+2){padding-right:calc((var(--vertical-cell-size,48px)) * .65)}.decimal-placeholder{width:100%;min-height:72px;color:var(--color-muted);text-align:center;font-family:inherit;font-size:16px}.decimal-vertical-board>p{width:100%;margin:var(--space-2) 0 0;color:var(--color-muted);font-family:var(--font-sans);text-align:center;font-size:14px}.decimal-vertical-board>p b{color:var(--color-primary)}.decimal-vertical-board.division{justify-items:center;gap:var(--space-5)}.decimal-shift-explanation{justify-content:center;align-items:center;gap:var(--space-3);width:100%;font-family:var(--font-sans);flex-wrap:wrap;font-size:16px;display:flex}.decimal-shift-explanation b{background:color-mix(in srgb, var(--color-primary) 12%, transparent);color:var(--color-primary);border-radius:999px;padding:7px 12px}.decimal-long-division{grid-template-rows:auto auto;grid-template-columns:auto auto;align-items:end;font-size:clamp(42px,7vw,68px);display:grid}.decimal-quotient{border-bottom:4px solid var(--color-text);text-align:right;grid-column:2;min-width:3em;padding:0 .25em .12em}.decimal-divisor{grid-row:2;padding:.15em .22em 0 0}.decimal-dividend{border-left:4px solid var(--color-text);border-radius:22px 0 0;grid-row:2;padding:.15em .25em 0}.decimal-division-work{gap:var(--space-2);width:min(520px,100%);font-family:var(--font-sans);font-size:14px;display:grid}.decimal-division-work ol{color:var(--color-text);gap:4px;margin:0;padding-left:24px;display:grid}.decimal-division-work li:last-child{color:var(--color-primary);font-weight:800}.decimal-division-work .decimal-work-note{color:var(--color-muted);text-align:center;margin:0}.column-board{width:min(var(--vertical-board-width,760px), 100%);font-variant-numeric:tabular-nums;grid-template-columns:minmax(0,1fr);gap:4px;display:grid;position:relative}.vertical-source-row{gap:2px;display:grid}.column-note-row,.vertical-number-row{grid-template-columns:42px repeat(var(--vertical-columns), minmax(0, var(--vertical-cell-size,58px)));justify-content:end;display:grid}.column-note-row b{min-height:1px}.column-note-row span{min-height:25px;color:var(--color-danger);white-space:nowrap;place-items:center;font-size:12px;font-weight:850;display:grid}.column-note-row span.active:not(:empty){border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-danger) 11%, transparent)}.column-note-row.borrow span{color:var(--color-warning)}.vertical-number-row>b{place-items:center;font-size:30px;display:grid}.vertical-number-row>span{min-height:var(--vertical-row-size,60px);border-radius:var(--radius-sm);color:var(--color-text);font-size:var(--vertical-digit-size,44px);transition:opacity var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);place-items:center;font-weight:700;display:grid}.vertical-number-row>span.active{background:color-mix(in srgb, var(--color-primary) 18%, transparent);box-shadow:inset 0 -4px 0 var(--color-primary), 0 0 18px color-mix(in srgb, var(--color-primary) 18%, transparent);color:var(--color-primary)}.vertical-number-row>span.dimmed{opacity:.22}.vertical-number-row.muted{opacity:.28}.column-rule{background:var(--color-text);opacity:.8;height:3px;margin-left:42px}.column-rule.secondary{background:var(--color-primary);margin-top:3px}.vertical-number-row.result-row>span{color:var(--color-primary)}.vertical-number-row.partial-row>span{font-size:min(38px, var(--vertical-digit-size,38px))}.partial-products,.partial-product-row{gap:2px;display:grid}.division-board{grid-template-columns:minmax(0,640px) minmax(200px,250px);justify-content:center;align-items:center;gap:clamp(16px,2.4vw,28px);width:min(940px,100%);display:grid}.division-paper{width:min(var(--division-paper-width,100%), 100%);font-variant-numeric:tabular-nums;align-content:center;justify-self:center;min-width:0;display:grid}.division-grid-row{grid-template-columns:var(--division-divisor-width,72px) repeat(var(--division-columns), minmax(0, var(--division-cell-size,58px)));justify-content:end;width:100%;display:grid}.division-grid-row b{min-height:var(--division-row-size,56px);font-size:min(28px, var(--division-digit-size,28px));place-items:center;display:grid}.division-grid-row span{min-height:var(--division-row-size,56px);border-radius:var(--radius-sm);font-size:var(--division-digit-size,46px);transition:opacity var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);place-items:center;font-weight:750;display:grid}.division-grid-row.quotient{color:var(--color-primary)}.division-dividend-row>span{border-top:3px solid var(--color-text);border-radius:0}.division-dividend-row>span:nth-child(2){border-left:3px solid var(--color-text);border-radius:18px 0 0}.division-dividend-row>b{font-size:min(var(--division-digit-size,42px), 42px);white-space:nowrap;justify-content:end;padding-right:14px}.division-work-rows{gap:0;display:grid}.division-grid-row.product{border-bottom:2px solid color-mix(in srgb, var(--color-text) 70%, transparent)}.division-grid-row.remainder{color:var(--color-primary);margin-bottom:3px}.division-grid-row.bring{color:var(--color-text)}.division-grid-row.row-dimmed{opacity:.3}.division-grid-row span.active{background:color-mix(in srgb, var(--color-primary) 17%, transparent);box-shadow:inset 0 -3px 0 var(--color-primary);color:var(--color-primary)}.division-grid-row span.dimmed{opacity:.24}.division-comparison{align-content:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-height:180px;padding:var(--space-4);display:grid}.division-comparison>span{color:var(--color-muted);font-size:13px;font-weight:800}.division-comparison>span strong{color:var(--color-primary);margin-left:8px;font-size:28px}.division-comparison p{border-left:3px solid var(--color-border);color:var(--color-muted);margin:0;padding:8px 12px}.division-comparison p.works{border-color:var(--color-primary);color:var(--color-primary)}.division-comparison p.too-large{border-color:var(--color-danger);color:var(--color-danger)}.vertical-progress{gap:5px;display:flex}.vertical-progress button{background:var(--color-border);border:0;border-radius:999px;flex:1;min-width:0;min-height:7px;padding:0}.vertical-progress button.done{background:color-mix(in srgb, var(--color-primary) 45%, var(--color-border))}.vertical-progress button.active{background:var(--color-primary)}.vertical-practice-stage{gap:var(--space-3);display:grid}.vertical-practice-toolbar{justify-content:space-between;align-items:end;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4);display:flex}.vertical-practice-toolbar label{gap:6px;min-width:min(280px,100%);font-size:12px}.vertical-practice-toolbar select{min-height:44px}.vertical-practice-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.vertical-practice-actions button{align-items:center;gap:6px;min-height:44px;display:inline-flex}.vertical-practice-actions svg{width:17px;height:17px}.primary-tool .vertical-practice-actions .primary-action{border-color:var(--color-primary);background:var(--color-primary);color:#03120f}.vertical-practice-template-editor{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4);display:grid}.vertical-practice-template-editor>div{gap:var(--space-3);grid-template-columns:repeat(4,minmax(120px,1fr));display:grid}.vertical-practice-template-editor label{color:var(--color-muted);gap:6px;font-size:12px;font-weight:800}.vertical-practice-template-editor input{min-height:42px}.vertical-practice-template-editor>button{align-items:center;gap:7px;width:fit-content;min-height:42px;display:inline-flex}.vertical-practice-template-editor>button svg{width:17px;height:17px}.vertical-practice-template-editor>p{color:var(--color-muted);margin:0;font-size:12px}.vertical-practice-paper{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-4);display:grid}.vertical-practice-paper>header{align-items:baseline;gap:var(--space-3);border-bottom:1px solid var(--color-border);padding-bottom:var(--space-3);display:flex}.vertical-practice-paper>header span,.vertical-practice-paper>header small{color:var(--color-muted);font-size:12px;font-weight:800}.vertical-practice-paper>header strong{color:var(--color-primary);font-size:20px}.vertical-practice-paper>header small{margin-left:auto}.vertical-practice-board-wrap{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);place-items:center;min-height:430px;padding:clamp(20px,4vw,42px);display:grid;overflow-x:auto}.vertical-practice-column-board{font-variant-numeric:tabular-nums;gap:7px;width:min(620px,100%);display:grid}.vertical-practice-number-row{grid-template-columns:46px repeat(var(--practice-columns), minmax(44px, 62px));justify-content:end;display:grid}.vertical-practice-number-row>b{place-items:center;font-size:30px;display:grid}.vertical-practice-rule{background:var(--color-text);height:3px;margin-left:46px}.vertical-practice-rule.secondary{background:var(--color-primary);margin-top:2px}.practice-digit{border-radius:var(--radius-sm);min-width:0;min-height:66px;color:var(--color-text);place-items:center;font-size:42px;font-weight:760;display:grid}.practice-digit.empty{visibility:hidden}.practice-digit.blank{border:2px dashed color-mix(in srgb, var(--color-primary) 62%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 7%, var(--color-canvas));margin:4px}.practice-digit.blank:focus-within{box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 17%, transparent);border-style:solid}.practice-digit.blank.wrong{border-color:var(--color-danger);background:color-mix(in srgb, var(--color-danger) 9%, var(--color-canvas))}.practice-digit.blank.correct{border-style:solid;border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas))}.primary-tool .practice-digit input{width:100%;min-width:0;min-height:56px;color:var(--color-primary);text-align:center;background:0 0;border:0;outline:0;padding:0;font-size:38px;font-weight:850}.primary-tool button.practice-digit.template-toggle{border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 5%, var(--color-canvas));min-height:58px;color:var(--color-text);padding:0;font-size:38px;font-weight:800}.primary-tool button.practice-digit.template-toggle.blanked{border-style:dashed;border-color:var(--color-warning);color:var(--color-warning);background:color-mix(in srgb, var(--color-warning) 8%, var(--color-canvas))}.vertical-practice-number-row.result .practice-digit{color:var(--color-primary)}.vertical-practice-number-row.partial .practice-digit{min-height:58px;font-size:36px}.vertical-practice-division{place-items:center;width:min(720px,100%);display:grid}.vertical-practice-division-paper{font-variant-numeric:tabular-nums;justify-self:center;width:max-content;max-width:100%;display:grid}.practice-division-row{grid-template-columns:var(--practice-divisor-width,76px) repeat(var(--practice-columns), var(--practice-cell-size,62px));width:max-content;display:grid;position:relative}.practice-division-row>b{justify-content:end;align-items:center;gap:2px;min-height:66px;padding-right:14px;font-size:34px;display:flex}.practice-division-row.quotient{color:var(--color-primary)}.practice-division-row.dividend{position:relative}.practice-division-row.dividend:before{z-index:2;top:0;right:0;left:var(--practice-divisor-width,76px);background:var(--color-text);content:"";pointer-events:none;border-radius:3px;height:3px;position:absolute}.practice-division-row.dividend:after{z-index:2;top:0;bottom:0;left:var(--practice-divisor-width,76px);background:var(--color-text);content:"";pointer-events:none;border-radius:18px 0 0;width:3px;position:absolute}.practice-division-row.dividend>.practice-digit{border-radius:0}.practice-division-row.work>b{min-height:52px;color:var(--color-muted);font-size:25px}.practice-division-row.work>.practice-digit{min-height:52px;font-size:34px}.practice-division-row.work.bring>.practice-digit{color:var(--color-text)}.practice-division-row.work.remainder>.practice-digit{color:var(--color-primary)}.practice-division-subtraction-rule{z-index:2;background:color-mix(in srgb, var(--color-text) 78%, transparent);pointer-events:none;border-radius:2px;grid-column:2/-1;height:2px;position:absolute;bottom:0;left:0;right:0}.practice-digit.inline{vertical-align:middle;width:42px;min-height:54px;font-size:32px;display:inline-grid}.primary-tool .practice-digit.inline input{min-height:46px;font-size:30px}.practice-remainder-row{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-width:120px;padding:var(--space-3);gap:8px;display:grid}.practice-remainder-row>span{color:var(--color-muted);font-size:12px;font-weight:800}.practice-remainder-row>div{display:flex}.vertical-practice-feedback{border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-muted);margin:0;padding:11px 14px}.vertical-practice-feedback.success{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas))}.vertical-practice-feedback.error{border-color:var(--color-danger);color:var(--color-danger)}.vertical-practice-feedback.incomplete{border-color:var(--color-warning);color:var(--color-warning)}.vertical-practice-feedback.invalid{border-color:var(--color-warning);color:var(--color-warning);background:color-mix(in srgb, var(--color-warning) 7%, var(--color-canvas))}.practice-solvability{border:1px solid var(--color-border);border-radius:999px;margin-left:auto;padding:5px 10px}.practice-solvability.unique{border-color:color-mix(in srgb, var(--color-primary) 58%, var(--color-border));color:var(--color-primary)}.practice-solvability.multiple,.practice-solvability.none{border-color:color-mix(in srgb, var(--color-warning) 58%, var(--color-border));color:var(--color-warning)}.sudoku-toolbar{justify-content:space-between;align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.sudoku-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.sudoku-actions button{align-items:center;gap:6px;min-height:42px;display:inline-flex}.sudoku-live-toggle{width:auto;min-height:42px;color:var(--color-muted);white-space:nowrap;cursor:pointer;flex-direction:row;flex:none;align-items:center;gap:9px;padding:4px 8px;font-size:13px;font-weight:750;display:inline-flex}.primary-tool .sudoku-live-toggle input[type=checkbox]{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;min-height:0;position:absolute;overflow:hidden}.sudoku-toggle-control{border:1px solid color-mix(in srgb, var(--color-muted) 45%, var(--color-border));background:color-mix(in srgb, var(--color-muted) 26%, var(--color-canvas));width:42px;height:24px;transition:border-color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);border-radius:999px;flex:none;position:relative}.sudoku-toggle-control:after{content:"";width:18px;height:18px;transition:transform var(--duration-fast) var(--ease-standard);background:#fff;border-radius:50%;position:absolute;top:2px;left:2px;box-shadow:0 2px 5px #00000057}.sudoku-live-toggle input:checked+.sudoku-toggle-control{border-color:var(--color-primary);background:var(--color-primary)}.sudoku-live-toggle input:checked+.sudoku-toggle-control:after{transform:translate(18px)}.sudoku-live-toggle input:focus-visible+.sudoku-toggle-control{outline:3px solid var(--color-focus);outline-offset:2px}.sudoku-feedback{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);color:var(--color-muted);padding:11px 14px;font-size:13px;line-height:1.5}.sudoku-feedback.success{border-color:color-mix(in srgb, var(--color-primary) 62%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas));color:var(--color-primary)}.sudoku-feedback.error{border-color:color-mix(in srgb, var(--color-danger) 62%, var(--color-border));background:color-mix(in srgb, var(--color-danger) 8%, var(--color-canvas));color:var(--color-danger)}.sudoku-feedback.incomplete{border-color:color-mix(in srgb, var(--color-warning) 62%, var(--color-border));color:var(--color-warning)}.sudoku-workspace{justify-content:center;align-items:start;gap:var(--space-4);grid-template-columns:minmax(300px,720px) minmax(220px,300px);display:grid}.sudoku-grid{aspect-ratio:1;grid-template-columns:repeat(var(--sudoku-size), 1fr);border:3px solid var(--color-text);background:var(--color-text);width:min(720px,100%);display:grid;overflow:hidden}.sudoku-grid button{aspect-ratio:1;border:solid color-mix(in srgb, var(--color-border) 76%, var(--color-text));background:var(--color-canvas);min-width:0;min-height:0;color:var(--color-primary);-webkit-text-fill-color:currentColor;transition:background var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);border-width:0 1px 1px 0;border-radius:0;padding:0;font-size:clamp(18px,4vw,42px);font-weight:800}.sudoku-grid.size-9 button{font-size:clamp(14px,2.6vw,28px)}.sudoku-grid button.given,.sudoku-grid button.given:is(:hover,:focus-visible){background:color-mix(in srgb, var(--color-text) 7%, var(--color-canvas));box-shadow:none;color:var(--color-text);cursor:default;outline:none;transform:none}.sudoku-grid button.editable:not(.user-entry),.sudoku-grid button.editable:not(.user-entry):focus-visible{background:var(--color-canvas);box-shadow:none;color:var(--color-muted);outline:none}.sudoku-grid button.editable:not(.user-entry):hover{background:color-mix(in srgb, var(--color-primary) 6%, var(--color-canvas));color:var(--color-primary)}.sudoku-grid button.related:not(.selected):not(.user-entry){background:color-mix(in srgb, var(--color-primary) 5%, var(--color-canvas))}.sudoku-grid button.user-entry,.sudoku-grid button.user-entry:is(:hover,:focus-visible){background:color-mix(in srgb, var(--color-warning) 13%, var(--color-canvas));box-shadow:inset 0 0 0 2px color-mix(in srgb, var(--color-warning) 55%, transparent);color:var(--color-warning);outline:none;font-weight:900}.sudoku-grid button.user-entry.related:not(.selected){background:color-mix(in srgb, var(--color-warning) 11%, var(--color-canvas));color:var(--color-warning)}.sudoku-grid button.editable.selected,.sudoku-grid button.editable.selected:is(:hover,:focus-visible){z-index:1;background:color-mix(in srgb, var(--color-primary) 18%, var(--color-canvas));box-shadow:inset 0 0 0 3px var(--color-primary);color:var(--color-primary);outline:none;position:relative}.sudoku-grid button.user-entry.selected,.sudoku-grid button.user-entry.selected:is(:hover,:focus-visible){background:color-mix(in srgb, var(--color-warning) 18%, var(--color-canvas));box-shadow:inset 0 0 0 3px var(--color-warning), 0 0 0 2px color-mix(in srgb, var(--color-primary) 50%, transparent);color:var(--color-warning)}.sudoku-grid button.conflict{background:color-mix(in srgb, var(--color-danger) 15%, var(--color-canvas));color:var(--color-danger)}.sudoku-number-panel{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4);display:grid}.sudoku-number-panel>div{grid-template-columns:repeat(3,1fr);gap:6px;display:grid}.sudoku-number-panel>div button{aspect-ratio:1;min-width:0;padding:0;font-size:22px}.sudoku-number-panel small{color:var(--color-muted);line-height:1.55}.sudoku-celebration-backdrop{z-index:10020;padding:var(--space-4);background:#00080ebd;place-items:center;display:grid;position:fixed;inset:0}.sudoku-celebration{align-content:center;place-items:center;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 70%, var(--color-border));border-radius:var(--radius-sm);background:var(--color-surface);text-align:center;width:min(460px,100%);min-height:320px;padding:48px 36px 36px;display:grid;position:relative;overflow:hidden;box-shadow:0 24px 70px #0000007a}.sudoku-celebration h2,.sudoku-celebration p{z-index:2;margin:0;position:relative}.sudoku-celebration h2{font-size:34px}.sudoku-celebration p{color:var(--color-muted)}.sudoku-celebration>button.primary{z-index:2;min-width:140px;position:relative}.sudoku-celebration-close{z-index:3;place-items:center;width:38px;min-height:38px;padding:0;display:grid;position:absolute;top:12px;right:12px}.sudoku-celebration-close svg{stroke-width:2.5px;width:20px!important;height:20px!important}.sudoku-success-icon{z-index:2;width:64px;height:64px;color:var(--color-primary);filter:drop-shadow(0 0 18px color-mix(in srgb, var(--color-primary) 45%, transparent));position:relative}.sudoku-confetti{z-index:1;pointer-events:none;position:absolute;inset:0;overflow:hidden}.sudoku-confetti i{background:var(--confetti-color);opacity:0;width:8px;height:15px;animation:sudoku-confetti-burst 1.45s var(--confetti-delay) cubic-bezier(.14,.72,.3,1) both;border-radius:2px;position:absolute;bottom:57px;left:42px}.sudoku-confetti i.from-right{left:auto;right:42px}.sudoku-party-popper{z-index:2;transform-origin:bottom;width:42px;height:62px;animation:.42s cubic-bezier(.18,.9,.3,1.35) both sudoku-popper-kick;position:absolute;bottom:17px;left:20px;transform:rotate(38deg)}.sudoku-party-popper.right{animation-name:sudoku-popper-kick-right;left:auto;right:20px;transform:rotate(-38deg)}.sudoku-party-popper b{clip-path:polygon(0 0,100% 0,70% 100%,30% 100%);background:repeating-linear-gradient(135deg,#ffcb55 0 8px,#ff647c 8px 16px,#52dbc6 16px 24px);height:45px;position:absolute;bottom:0;left:8px;right:8px;box-shadow:0 6px 10px #00000047}.sudoku-party-popper em{border:5px solid #ffd45e;border-bottom:0;border-radius:50% 50% 0 0;width:28px;height:15px;position:absolute;top:4px;left:7px;transform:rotate(-8deg)}.sudoku-party-popper:after{content:"";opacity:0;border:5px solid #ffe580e6;border-radius:50%;width:28px;height:28px;animation:.52s ease-out 80ms both sudoku-popper-flash;position:absolute;top:-6px;left:7px}@keyframes sudoku-popper-kick{0%{opacity:0;transform:rotate(38deg)translateY(12px)scale(.82)}55%{opacity:1;transform:rotate(42deg)translateY(-3px)scale(1.06)}to{opacity:1;transform:rotate(38deg)translateY(0)scale(1)}}@keyframes sudoku-popper-kick-right{0%{opacity:0;transform:rotate(-38deg)translateY(12px)scale(.82)}55%{opacity:1;transform:rotate(-42deg)translateY(-3px)scale(1.06)}to{opacity:1;transform:rotate(-38deg)translateY(0)scale(1)}}@keyframes sudoku-popper-flash{0%{opacity:0;transform:scale(.2)}35%{opacity:1}to{opacity:0;transform:scale(1.8)}}@keyframes sudoku-confetti-burst{0%{opacity:0;transform:translate(0,0)scale(.2)rotate(0)}9%{opacity:1}66%{transform:translate3d(var(--confetti-x), var(--confetti-y), 0) scale(1) rotate(var(--confetti-rotate));opacity:1}to{transform:translate3d(var(--confetti-x), calc(var(--confetti-y) + 76px), 0) scale(.92) rotate(var(--confetti-rotate));opacity:0}}@media (max-width:760px){.vertical-selector-panel{grid-template-columns:1fr;align-items:stretch}.vertical-experience-tabs,.vertical-mode-tabs,.sudoku-size-tabs{width:100%}.vertical-mode-tabs button,.sudoku-size-tabs button{flex:1;min-width:0;padding-inline:8px}.vertical-input-group{align-items:stretch}.vertical-input-group>span{align-self:end}.vertical-step-bar{grid-template-columns:minmax(0,1fr)}.vertical-playback{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.vertical-playback button{justify-content:center;border-radius:var(--radius-sm)!important}.vertical-board-wrap{height:400px;min-height:330px;padding:20px 10px}.column-note-row,.vertical-number-row{grid-template-columns:28px repeat(var(--vertical-columns), minmax(0, 1fr))}.column-rule{margin-left:28px}.vertical-practice-toolbar{flex-direction:column;align-items:stretch}.vertical-practice-toolbar label{width:100%}.vertical-practice-actions{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.vertical-practice-actions button{min-width:0;padding-inline:6px}.vertical-practice-board-wrap{min-height:360px;padding:18px 8px}.vertical-practice-number-row{grid-template-columns:32px repeat(var(--practice-columns), minmax(38px, 1fr))}.vertical-practice-number-row>b{font-size:24px}.vertical-practice-rule{margin-left:32px}.practice-digit{min-height:54px;font-size:32px}.primary-tool .practice-digit input{min-height:46px;font-size:30px}.practice-division-row{--practice-cell-size:46px;grid-template-columns:var(--practice-divisor-width,58px) repeat(var(--practice-columns), var(--practice-cell-size))}.practice-division-row>b{min-width:0;padding-right:7px;font-size:26px}.practice-digit.inline{width:32px;min-height:44px;font-size:25px}.practice-remainder-row{justify-self:center}.vertical-practice-template-editor>div{grid-template-columns:repeat(2,minmax(0,1fr))}.vertical-practice-paper>header{flex-wrap:wrap;align-items:flex-start}.practice-solvability{margin-left:0}.division-board{grid-template-columns:minmax(0,1fr)}.division-grid-row{grid-template-columns:52px repeat(var(--division-columns), minmax(0, 1fr))}.sudoku-workspace,.sudoku-number-panel{grid-template-columns:minmax(0,1fr)}.sudoku-number-panel>div{grid-template-columns:repeat(5,1fr)}}.tangram-tool-shell{gap:var(--space-4);display:grid}.tangram-overview-bar{align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-border);padding:0 0 var(--space-3);display:flex}.tangram-selection-summary,.tangram-view-summary{align-items:baseline;gap:2px;display:flex}.tangram-selection-summary{gap:2px var(--space-3);flex-wrap:wrap;min-width:0;margin-right:auto}.tangram-selection-summary span{width:100%}.tangram-selection-summary span,.tangram-selection-summary small,.tangram-view-summary span{color:var(--color-muted);font-size:12px}.tangram-selection-summary strong{font-size:18px}.tangram-view-summary{align-items:center;gap:var(--space-2)}.tangram-view-summary strong{color:var(--color-primary)}.tangram-view-summary button{min-height:38px!important}.tangram-canvas-actions{align-items:center;gap:var(--space-2);min-width:max-content;display:flex}.tangram-canvas-actions button{white-space:nowrap;flex:none;width:auto}.tangram-command-bar{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);grid-template-columns:minmax(210px,.72fr) minmax(410px,1.35fr) minmax(270px,.93fr);align-items:stretch;gap:0;display:grid;overflow:hidden}.tangram-command-group{align-content:end;gap:var(--space-2);border-right:1px solid var(--color-border);padding:var(--space-3);display:grid}.tangram-command-group:last-of-type{border-right:0}.tangram-command-label{color:var(--color-muted);font-size:11px;font-weight:900}.tangram-create-group{grid-template-columns:minmax(125px,1fr) auto;align-items:end}.tangram-create-group .tangram-command-label{grid-column:1/-1}.tangram-create-group button{white-space:nowrap;padding-inline:9px}.tangram-selected-actions{gap:var(--space-2);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.tangram-selected-actions button{white-space:nowrap;min-width:0;padding-inline:8px}.tangram-edit-group .tangram-command-label{align-self:start}.danger-button:not(:disabled){border-color:color-mix(in srgb, var(--color-danger) 62%, var(--color-border))!important;color:var(--color-danger)!important}.tangram-color-editor{align-items:center;gap:var(--space-2);border:0;grid-template-columns:44px minmax(0,1fr);padding:0;display:grid}.tangram-color-editor input[type=color]{cursor:pointer;width:44px;height:38px;padding:3px}.tangram-color-swatches{flex-wrap:wrap;gap:6px;display:flex}.tangram-color-swatches button{width:27px;height:27px;border:2px solid color-mix(in srgb, var(--color-text) 28%, transparent)!important;border-radius:50%!important;min-width:27px!important;min-height:27px!important;padding:0!important}.tangram-color-swatches button.selected{box-shadow:0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-primary);border-color:var(--color-text)!important}.tangram-edit-status{border-top:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 45%, transparent);padding:var(--space-2) var(--space-3);color:var(--color-muted);grid-column:1/-1;margin:0;font-size:12px}.tangram-edit-status.active{color:var(--color-primary);font-weight:800}.tangram-regularize-bar,.tangram-measure-bar{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-3);flex-wrap:wrap;display:flex}.tangram-exact-edit-bar{align-items:end;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 42%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 5%, var(--color-surface));padding:var(--space-3);grid-template-columns:auto repeat(4,minmax(120px,1fr));display:grid}.tangram-exact-edit-bar>strong{color:var(--color-primary);align-self:center}.tangram-exact-edit-bar>label{min-width:0;color:var(--color-muted);gap:5px;font-size:12px;display:grid}.tangram-exact-edit-bar select,.tangram-exact-edit-bar input{width:100%;min-width:0}.tangram-exact-edit-bar>small{color:var(--color-muted);grid-column:2/-1;font-size:12px}.tangram-regularize-bar>span,.tangram-measure-actions>span{color:var(--color-muted);font-size:12px;font-weight:900}.tangram-measure-bar{align-items:end}.tangram-measure-actions{align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.tangram-measure-bar>label{color:var(--color-muted);gap:5px;font-size:12px;display:grid}.tangram-measure-bar>label span{white-space:nowrap}.tangram-measure-bar select{min-width:116px}.tangram-measure-bar input{width:112px}.tangram-measure-summary{flex-wrap:wrap;flex:1;justify-content:flex-end;gap:6px;min-width:260px;display:flex}.tangram-measure-summary span{border-radius:var(--radius-sm);color:var(--color-muted);background:color-mix(in srgb, var(--color-primary) 7%, transparent);align-items:baseline;gap:5px;padding:6px 8px;font-size:12px;display:inline-flex}.tangram-measure-summary b{color:var(--color-primary)}.tangram-board svg{touch-action:none;-webkit-user-select:none;user-select:none;perspective:900px;perspective-origin:50% 42%;width:100%;min-height:min(620px,100vh - 260px);display:block}.tangram-click-catcher{fill:#0000;pointer-events:all}.tangram-piece-solid{transform-box:view-box;transform-style:preserve-3d;transition:transform var(--duration-spatial) var(--ease-spatial);will-change:transform}.tangram-piece-solid.flipped{transform:rotateY(180deg)}.tangram-piece{cursor:grab;opacity:.96;stroke:color-mix(in srgb, var(--color-text) 42%, transparent);stroke-width:1.5px;stroke-linejoin:round;filter:drop-shadow(0 3px 3px color-mix(in srgb, var(--color-canvas) 24%, transparent));transition:opacity var(--duration-fast) var(--ease-standard), filter var(--duration-fast) var(--ease-standard)}.tangram-piece:active{cursor:grabbing}.tangram-piece.selected{opacity:1;filter:drop-shadow(0 3px 3px color-mix(in srgb, var(--color-canvas) 24%, transparent)) drop-shadow(0 0 5px color-mix(in srgb, var(--color-primary) 42%, transparent));stroke:var(--color-primary);stroke-width:3px}.tangram-piece-light{pointer-events:none;opacity:.92}.tangram-piece-specular{pointer-events:none;mix-blend-mode:screen;opacity:.82}.tangram-piece-bevel{pointer-events:none;fill:none;stroke:#ffffff7a;stroke-width:1.35px;stroke-linejoin:round}.tangram-measure-overlay{pointer-events:none}.tangram-measure-overlay line{stroke:var(--color-secondary);stroke-width:1.5px;stroke-dasharray:5 3;vector-effect:non-scaling-stroke}.tangram-measure-overlay text{fill:var(--color-text);stroke:var(--color-canvas);stroke-width:3px;paint-order:stroke;text-anchor:middle;dominant-baseline:middle;vector-effect:non-scaling-stroke;font-size:10px;font-weight:900}.tangram-measure-overlay text.vertical{text-anchor:start}.tangram-handles{pointer-events:none}.tangram-rotate-control{pointer-events:auto;cursor:grab}.tangram-rotate-control:active{cursor:grabbing}.tangram-rotate-control .handle-hit,.tangram-flip-control .handle-hit,.tangram-scale-control .handle-hit{pointer-events:all;fill:#0000!important;stroke:none!important}.tangram-rotate-control .rotate-arc-outline{fill:none;stroke:var(--color-canvas);stroke-width:5px;stroke-linecap:round;vector-effect:non-scaling-stroke}.tangram-rotate-control .rotate-arc{fill:none;stroke:var(--color-primary);stroke-width:3px;stroke-linecap:round;vector-effect:non-scaling-stroke}.tangram-rotate-control .rotate-arrow-outline{fill:var(--color-canvas);stroke:var(--color-canvas);stroke-width:3px;vector-effect:non-scaling-stroke}.tangram-rotate-control .rotate-arrow{fill:var(--color-primary);stroke:none;vector-effect:non-scaling-stroke}.tangram-flip-control{pointer-events:auto;cursor:pointer}.tangram-flip-control .handle-outline{fill:none;stroke:var(--color-primary);stroke-width:2px;vector-effect:non-scaling-stroke}.tangram-flip-control .flip-icon-outline{fill:none;stroke:var(--color-canvas);stroke-linecap:round;stroke-linejoin:round;stroke-width:5px;vector-effect:non-scaling-stroke}.tangram-flip-control .flip-icon{fill:none;stroke:var(--color-primary);stroke-linecap:round;stroke-linejoin:round;stroke-width:2.5px;vector-effect:non-scaling-stroke}.tangram-scale-control{pointer-events:auto;cursor:nwse-resize}.tangram-scale-control .scale-handle-outline{fill:#0000;stroke:var(--color-primary);stroke-width:2px;vector-effect:non-scaling-stroke}.tangram-scale-control .scale-handle-icon{fill:none;stroke:var(--color-primary);stroke-linecap:round;stroke-linejoin:round;stroke-width:2px;vector-effect:non-scaling-stroke}.tangram-shape-edit-handles{pointer-events:none}.tangram-vertex-handle,.tangram-edge-handle{pointer-events:auto;vector-effect:non-scaling-stroke;cursor:move}.tangram-vertex-handle{fill:var(--color-canvas);stroke:var(--color-primary);stroke-width:3px}.tangram-vertex-handle.selected{fill:var(--color-primary);stroke:var(--color-canvas)}.tangram-selected-vertex-ring{fill:color-mix(in srgb, var(--color-primary) 16%, transparent);stroke:var(--color-secondary);stroke-width:3px;vector-effect:non-scaling-stroke;pointer-events:none}.tangram-edge-handle-hit{fill:#0000;stroke:none;pointer-events:all}.tangram-edge-handle-dot{fill:color-mix(in srgb, var(--color-canvas) 88%, transparent);stroke:var(--color-primary);stroke-width:2px}.tangram-edge-handle-plus{fill:none;stroke:var(--color-primary);stroke-width:1.8px;stroke-linecap:round;pointer-events:none}.tangram-edge-select-hit{fill:none;stroke:#0000;stroke-width:16px;pointer-events:stroke;cursor:pointer}.tangram-selected-edge{fill:none;stroke:var(--color-secondary);stroke-width:5px;stroke-linecap:round;vector-effect:non-scaling-stroke;filter:drop-shadow(0 0 5px color-mix(in srgb, var(--color-secondary) 72%, transparent));pointer-events:none}.tangram-edit-target-label{pointer-events:none}.tangram-edit-target-label rect{fill:var(--color-canvas);stroke:var(--color-secondary);stroke-width:1.5px;vector-effect:non-scaling-stroke}.tangram-edit-target-label text{fill:var(--color-text);text-anchor:middle;dominant-baseline:middle;font-size:9px;font-weight:900}.tangram-edge-handle{cursor:crosshair}.tangram-edge-handle:hover .tangram-edge-handle-dot{fill:var(--color-primary);stroke:var(--color-canvas)}.modal-backdrop{z-index:1000;padding:var(--space-4);background:#000000a8;place-items:center;display:grid;position:fixed;inset:0}.modal{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);width:min(480px,100%);max-height:calc(100vh - 32px);padding:var(--space-5);overflow:auto}.modal>header{margin-bottom:var(--space-5);justify-content:space-between;align-items:center;display:flex}.modal h2{letter-spacing:0;margin:0}.reward-arrival-dialog{border-color:color-mix(in srgb, var(--color-secondary) 58%, var(--color-border));background:radial-gradient(circle at 50% 4%, color-mix(in srgb, var(--color-secondary) 16%, transparent), transparent 42%), var(--color-surface);width:min(430px,100%);overflow:hidden}.reward-arrival-dialog>header{margin-bottom:var(--space-3)}.reward-arrival-dialog>header h2{font-size:20px}.reward-arrival-visual{min-height:150px;margin:0 calc(var(--space-5) * -1) var(--space-4);background:linear-gradient(180deg, color-mix(in srgb, var(--color-secondary) 10%, transparent), transparent);place-items:center;display:grid;position:relative}.reward-arrival-visual>svg{width:52px;height:52px;color:var(--color-secondary);filter:drop-shadow(0 0 16px color-mix(in srgb, var(--color-secondary) 45%, transparent));position:absolute;transform:translateY(-30px)}.reward-arrival-visual>strong{z-index:1;color:var(--color-secondary);font-variant-numeric:tabular-nums;align-self:end;margin-bottom:12px;font-size:46px;line-height:1;position:relative}.reward-arrival-visual>strong small{font-size:17px}.reward-arrival-copy{gap:var(--space-2);text-align:center;display:grid}.reward-arrival-copy h3,.reward-arrival-copy p,.reward-arrival-copy small{margin:0}.reward-arrival-copy h3{font-size:19px}.reward-arrival-copy p{color:var(--color-muted);line-height:1.7}.reward-arrival-copy>small{color:color-mix(in srgb, var(--color-secondary) 78%, var(--color-muted));font-weight:700}.reward-arrival-confirm{width:100%;margin-top:var(--space-5)}.auth-modal{width:min(368px,100%);padding:var(--space-4)}.auth-modal>header{margin-bottom:var(--space-3)}.form-stack{gap:var(--space-4);display:grid}.form-stack small{color:var(--color-muted);font-weight:400}.form-error,.form-success{border-left:3px solid var(--color-danger);background:color-mix(in srgb, var(--color-danger) 12%, transparent);padding:var(--space-3)}.form-success{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent)}.wechat-login-panel{justify-items:center;gap:var(--space-4);text-align:center;display:grid}.wechat-login-panel.desktop{gap:var(--space-3)}.wechat-login-panel>div:not(.wechat-login-mark){gap:var(--space-2);display:grid}.wechat-login-panel p,.wechat-login-panel small{color:var(--color-muted);margin:0;line-height:1.6}.wechat-login-panel>.login-member-benefits{border:1px solid color-mix(in srgb, var(--color-secondary) 46%, var(--color-border));border-radius:var(--radius-sm);background:linear-gradient(135deg, color-mix(in srgb, var(--color-secondary) 13%, var(--color-surface)), color-mix(in srgb, var(--color-primary) 7%, var(--color-surface)));text-align:left;gap:0;width:100%;display:grid;overflow:hidden}.login-member-benefit{align-items:center;gap:var(--space-3);padding:10px var(--space-3);grid-template-columns:32px minmax(0,1fr);display:grid}.login-member-benefit+.login-member-benefit{border-top:1px solid color-mix(in srgb, var(--color-border) 72%, transparent)}.login-member-benefit>svg{width:25px;height:25px;color:var(--color-secondary)}.login-member-benefit.referral-benefit-callout>svg{color:var(--color-primary)}.login-member-benefit>span{gap:1px;display:grid}.login-member-benefit strong{font-size:13px}.login-member-benefit small{font-size:11px}.wechat-login-mark{color:#fff;background:#07c160;border-radius:18px;place-items:center;width:64px;height:64px;font-size:30px;font-weight:900;display:grid}.wechat-login-panel .primary-action{background:#07c160;border-color:#07c160;width:100%}.wechat-login-panel .primary-action:disabled{cursor:not-allowed}.wechat-qr{border-radius:var(--radius-sm);width:300px;min-height:400px;color:var(--color-muted);background:#1f2023;place-items:center;display:grid;position:relative;overflow:hidden}.wechat-qr.failed{min-height:180px}.wechat-qr.failed #wechat-qr-container{display:none}#wechat-qr-container,.wechat-qr iframe{width:300px;height:400px;display:block}.wechat-qr-status{z-index:1;padding:var(--space-5);background:#1f2023;place-items:center;line-height:1.7;display:grid;position:absolute;inset:0}.text-action{color:var(--color-primary);background:0 0;border:0}.membership-options{margin-bottom:var(--space-5);gap:var(--space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.membership-options button{border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:84px;color:var(--color-text);background:var(--color-canvas);padding:var(--space-3);text-align:left;display:grid}.membership-options button[aria-pressed=true]{border-color:var(--color-primary);box-shadow:inset 0 0 0 1px var(--color-primary)}.membership-price{align-items:baseline;gap:var(--space-2);color:var(--color-secondary);display:flex}.membership-price b{font-size:1.05rem}.membership-price del{color:var(--color-muted);font-size:.78rem;font-weight:400}.membership-dialog-actions{gap:var(--space-3);display:grid}.membership-dialog-actions>button{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-sm);width:100%;min-height:44px;padding:0 var(--space-5);font-weight:800;display:inline-flex}.membership-share-action{border:1px solid color-mix(in srgb, var(--color-primary) 72%, var(--color-border));color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 14%, var(--color-canvas));box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 12%, transparent);transition:border-color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard)}.membership-share-action:hover{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 20%, var(--color-canvas));transform:translateY(-1px)}.membership-share-action svg{width:17px;height:17px}.payment-method-options{gap:var(--space-3);margin:0 0 var(--space-5);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.payment-method-options button{align-items:center;column-gap:var(--space-3);row-gap:var(--space-1);border:1px solid var(--color-border);border-radius:var(--radius-md);min-height:92px;color:var(--color-text);background:linear-gradient(135deg, color-mix(in srgb, var(--color-surface-raised) 82%, transparent), var(--color-canvas));padding:var(--space-4);text-align:left;transition:transform var(--duration-normal) var(--ease-standard), border-color var(--duration-normal) var(--ease-standard), background var(--duration-normal) var(--ease-standard);grid-template-rows:auto auto;grid-template-columns:auto 1fr;display:grid;position:relative}.payment-method-options button:only-child{grid-column:1/-1}.payment-method-options button:hover{border-color:color-mix(in srgb, var(--color-primary) 55%, var(--color-border));transform:translateY(-1px)}.payment-method-options button[aria-checked=true]{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas));box-shadow:inset 0 0 0 1px var(--color-primary)}.payment-method-logo{background:#fff;border-radius:12px;grid-row:1/span 2;place-items:center;width:42px;height:42px;padding:8px;display:grid;box-shadow:0 8px 20px #00000029}.payment-method-logo img{object-fit:contain;width:100%;height:100%;display:block}.payment-method-options small{color:var(--color-muted);line-height:1.4}.wechat-native-pay-modal{width:min(420px,100%)}.wechat-native-pay-panel{justify-items:center;gap:var(--space-4);text-align:center;display:grid}.wechat-native-pay-panel p{color:var(--color-muted);margin:0;line-height:1.6}.wechat-native-pay-panel small{overflow-wrap:anywhere;max-width:100%;color:var(--color-muted)}.wechat-native-pay-panel .primary-action{width:100%}.wechat-native-pay-summary{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);width:100%;padding:var(--space-3) var(--space-4);justify-content:space-between;align-items:center;display:flex}.wechat-native-pay-summary b{color:var(--color-secondary)}.wechat-native-pay-qr{aspect-ratio:1;border:1px solid var(--color-border);border-radius:var(--radius-sm);width:min(280px,100%);padding:var(--space-3);color:#111;background:#fff;place-items:center;display:grid}.wechat-native-pay-qr img{object-fit:contain;width:100%;height:100%;display:block}.order-list{gap:var(--space-3);display:grid}.order-list article{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4);justify-content:space-between;align-items:center;display:flex}.order-list article>div{gap:var(--space-2);display:grid}.order-list article>div:last-child{text-align:right}.order-actions{justify-items:end}.payment-channel-tag{border:1px solid var(--color-border);width:fit-content;color:var(--color-muted);background:var(--color-surface);border-radius:999px;align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:800;display:inline-flex}.payment-channel-tag span{background:#fff;border-radius:50%;place-items:center;width:18px;height:18px;padding:3px;display:grid}.payment-channel-tag img{object-fit:contain;width:100%;height:100%;display:block}.payment-channel-tag.wechat{color:#5ff0b2;border-color:color-mix(in srgb, #07c160 48%, var(--color-border));background:color-mix(in srgb, #07c160 10%, var(--color-surface))}.payment-channel-tag.alipay{color:#8fc2ff;border-color:color-mix(in srgb, #1677ff 48%, var(--color-border));background:color-mix(in srgb, #1677ff 10%, var(--color-surface))}.payment-channel-tag.unknown span{background:var(--color-muted)}.pending-order-actions{justify-content:flex-end;gap:var(--space-2);flex-wrap:wrap;display:flex}.sync-order-button{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:34px;color:var(--color-primary);background:var(--color-surface);padding:0 var(--space-3);font-size:12px;font-weight:700;display:inline-flex}.continue-pay-button{border-color:var(--color-primary);color:#03120f;background:var(--color-primary)}.sync-order-button:disabled{cursor:not-allowed;opacity:.55}.sync-order-button svg{width:14px;height:14px}.order-message{margin-bottom:var(--space-4);border-left:3px solid var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent);padding:var(--space-3)}.order-list small,.order-list span,.empty-state{color:var(--color-muted)}.empty-state{border:1px dashed var(--color-border);padding:var(--space-6);text-align:center}.feature-nav.no-favorite{grid-template-columns:1fr}.visualization-tool{width:min(var(--tool-panel-max-width), 100%)}.visualization-tool>header p:last-child{max-width:840px;color:var(--color-muted);line-height:1.7}.visualization-tool button:not(.net-cell){justify-content:center;align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:38px;color:var(--color-text);background:var(--color-canvas);padding:0 var(--space-3);display:inline-flex}.visualization-tool button:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary)}.visualization-tool button:disabled{cursor:not-allowed;opacity:.45}.visualization-tool button svg{width:17px;height:17px}.studio-toolbar,.net-toolbar,.preset-row,.inline-actions{align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.studio-toolbar,.net-toolbar{margin-bottom:var(--space-4)}.toolbar-note{color:var(--color-muted);margin-left:auto;font-size:13px}.toolbar-divider{width:1px;height:28px;margin:0 var(--space-1);background:var(--color-border)}.visualization-tool button.toggle-active{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas))}.panel-heading{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.panel-heading>div:not(.inline-actions){gap:3px;display:grid}.panel-heading small,.field-help{color:var(--color-muted)}.orthographic-layout{gap:var(--space-4);grid-template-columns:minmax(0,1.45fr) minmax(300px,.7fr);display:grid}.scene-card,.projection-card,.projection-answer,.expression-panel,.graph-panel,.net-editor-card,.fold-card,.object-list,.property-panel{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);padding:var(--space-4)}.scene-canvas,.function-graph,.fold-canvas{width:100%;margin-top:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-surface) 80%, transparent);touch-action:none;display:block}.three-scene-canvas{aspect-ratio:680/500;height:auto;overflow:hidden}.three-scene-canvas canvas{cursor:grab;width:100%;height:100%;display:block}.three-scene-canvas canvas:active{cursor:grabbing}.scene-drag-delete{z-index:1000;align-items:center;gap:var(--space-2);pointer-events:none;border:1px solid color-mix(in srgb, var(--color-danger) 66%, var(--color-border));border-radius:var(--radius-control);background:color-mix(in srgb, var(--color-danger) 14%, var(--color-surface));color:var(--color-danger);padding:var(--space-2) var(--space-3);box-shadow:var(--shadow-lg);font-size:13px;font-weight:750;display:inline-flex;position:fixed}.scene-drag-delete svg{width:17px;height:17px}.scene-view-buttons{gap:var(--space-2);margin-top:var(--space-3);flex-wrap:wrap;display:flex}.visualization-tool .scene-view-buttons button{min-height:32px;padding:0 var(--space-3);background:color-mix(in srgb, var(--color-surface) 78%, var(--color-canvas));border-radius:999px;font-size:12px;font-weight:800}.scene-grid line,.projection-grid line,.graph-grid line{stroke:var(--color-border);stroke-width:.7px}.scene-ground{pointer-events:none}.ground-plane{stroke:none;transition:fill var(--duration-normal) var(--ease-standard), fill-opacity var(--duration-normal) var(--ease-standard)}.scene-ground.above .ground-plane{fill:var(--color-primary);fill-opacity:.035}.scene-ground.below .ground-plane{fill:var(--color-surface-raised);fill-opacity:1;stroke:var(--color-secondary);stroke-width:2px}.scene-ground.below .scene-grid line{stroke:color-mix(in srgb, var(--color-secondary) 70%, var(--color-border));stroke-width:1.15px}.projection-grid .axis,.graph-grid .axis{stroke:var(--color-muted);stroke-width:1.5px}.mesh-face,.projection-face,.fold-face{stroke:color-mix(in srgb, var(--color-text) 68%, transparent);stroke-width:1.4px;fill-opacity:.62;cursor:pointer}.mesh-face.selected,.projection-face.selected,.fold-face.selected{stroke:var(--color-primary);stroke-width:3.5px;fill-opacity:.84}.mesh-face.curved{stroke:color-mix(in srgb, var(--color-text) 12%, transparent);stroke-width:.35px;fill-opacity:.94}.mesh-face.curved.selected{stroke:color-mix(in srgb, var(--color-primary) 34%, transparent);stroke-width:.8px;fill-opacity:1}.projection-face.curved{stroke:none;fill-opacity:.9}.projection-face.curved.selected{stroke:none;fill-opacity:1;filter:drop-shadow(0 0 3px var(--color-primary))}.canvas-hint{align-items:center;gap:var(--space-2);margin:var(--space-3) 0 0;color:var(--color-muted);font-size:13px;display:flex}.canvas-hint svg{width:16px}.scene-direction-strip{gap:var(--space-4);margin-top:var(--space-3);color:var(--color-muted);flex-wrap:wrap;font-size:12px;display:flex}.scene-direction-strip span{align-items:center;gap:6px;display:inline-flex}.scene-direction-strip svg{width:14px;height:14px}.scene-direction-strip .ground-status{border:1px solid var(--color-border);border-radius:999px;padding:4px 9px;font-weight:800}.scene-direction-strip .ground-status.above{color:var(--color-primary)}.scene-direction-strip .ground-status.below{border-color:var(--color-secondary);color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 10%, transparent)}.orientation-gizmo line{stroke-width:3px}.orientation-gizmo text{font-size:12px;font-weight:800}.projection-panel{gap:var(--space-3);grid-template-rows:repeat(3,minmax(0,1fr));display:grid}.projection-answer{align-content:start;gap:var(--space-3);min-height:100%;display:grid}.projection-answer-heading{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.projection-answer-heading>div{gap:3px;display:grid}.projection-answer-heading small,.projection-answer-placeholder small{color:var(--color-muted)}.projection-answer-placeholder{place-content:center;justify-items:center;gap:var(--space-2);text-align:center;min-height:360px;display:grid}.projection-answer-placeholder svg{width:32px;height:32px;color:var(--color-muted)}.projection-card{padding:var(--space-3)}.projection-card>div{justify-content:space-between;display:flex}.projection-card small{color:var(--color-muted)}.projection-card svg{width:100%;max-height:176px;margin-top:var(--space-2);display:block}.projection-solid{stroke:color-mix(in srgb, var(--color-text) 58%, transparent);stroke-width:1.25px;fill-opacity:.92;cursor:pointer}.projection-solid.selected{stroke:var(--color-primary);stroke-width:3px;fill-opacity:1;filter:drop-shadow(0 0 3px color-mix(in srgb, var(--color-primary) 70%, transparent))}.primary-save-card{align-content:start;gap:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);padding:var(--space-4);display:grid}.save-row{gap:var(--space-2);flex-wrap:wrap;align-items:center;display:flex}.save-row input{flex:1;min-width:220px}.primary-save-card{margin-top:var(--space-4)}.saved-structure-list{gap:var(--space-2);display:grid}.saved-structure-list article{gap:var(--space-2);grid-template-columns:minmax(0,1fr) 38px;display:grid}.saved-structure-list article>button:first-child{text-align:left;min-height:52px;justify-content:flex-start!important}.saved-structure-list strong,.saved-structure-list small{display:block}.saved-structure-list small{color:var(--color-muted);font-size:12px}.object-editor{gap:var(--space-4);margin-top:var(--space-4);grid-template-columns:minmax(250px,.7fr) minmax(0,1.3fr);display:grid}.object-list{align-content:start;gap:var(--space-2);display:grid}.object-list-item{display:block;position:relative}.object-list-item>button{width:100%;min-width:0;justify-content:flex-start!important;padding-right:104px!important}.object-list-item>button.selected{border-color:var(--color-primary)!important;background:color-mix(in srgb, var(--color-primary) 9%, var(--color-canvas))!important}.object-list-item .inline-actions{z-index:1;align-self:center;gap:2px;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.object-list-item .inline-actions button{background:0 0;border-color:#0000}.object-list-item .inline-actions button:hover{background:color-mix(in srgb, var(--color-primary) 12%, transparent)}.geometry-right-angle{fill:none;stroke:var(--color-secondary);stroke-width:2px}.geometry-extension{fill:none;stroke:var(--color-secondary);stroke-width:1.8px;stroke-dasharray:7 5;opacity:.8;vector-effect:non-scaling-stroke;pointer-events:none}.studio-toolbar button[draggable=true]{cursor:grab}.studio-toolbar button[draggable=true]:active{cursor:grabbing}.object-color-editor{align-items:center;gap:var(--space-3);border:0;grid-template-columns:48px minmax(0,1fr);padding:0;display:grid}.object-color-editor legend{margin-bottom:var(--space-2);color:var(--color-muted);font-size:13px;font-weight:800}.object-color-editor input[type=color]{border-radius:var(--radius-sm);cursor:pointer;width:48px;height:38px;padding:3px}.object-color-swatches{gap:var(--space-2);flex-wrap:wrap;display:flex}.object-color-swatches button{width:30px;height:30px;border:2px solid color-mix(in srgb, var(--color-text) 28%, transparent)!important;border-radius:50%!important;min-width:30px!important;min-height:30px!important;padding:0!important}.object-color-swatches button.selected{box-shadow:0 0 0 2px var(--color-canvas), 0 0 0 4px var(--color-primary);border-color:var(--color-text)!important}.object-list i,.function-legend i{border-radius:50%;flex:none;width:10px;height:10px}.object-list span{text-align:left;flex:1}.property-panel{align-content:start;gap:var(--space-4);display:grid}.align-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.inline-actions button{width:38px;padding:0!important}.fold-card .panel-heading .inline-actions button{width:auto;padding:0 var(--space-3)!important}.fold-heading-actions{flex-wrap:nowrap}.cube-fold-fullscreen .fold-card>.panel-heading{flex-wrap:wrap}.fold-card .panel-heading .fold-heading-actions{gap:var(--space-2);margin-left:auto}.fold-card .panel-heading .fold-heading-actions button{height:var(--visual-control-height,38px);min-height:var(--visual-control-height,38px);font-family:inherit;font-size:var(--visual-control-font-size,13px);font-weight:var(--visual-control-font-weight,800);white-space:nowrap;box-shadow:none;line-height:1}.fold-card .panel-heading .fold-heading-actions button svg{flex-shrink:0;width:17px;height:17px}.inline-fullscreen-controls-host{display:flex}.visualization-fullscreen-stage:not(:fullscreen) .inline-fullscreen-controls-host .visualization-fullscreen-toggle{min-height:38px;position:static;transform:none}.scene-viewport{min-width:0;min-height:0;margin-top:var(--space-3);position:relative}.scene-viewport .three-scene-canvas{margin-top:0}.scene-corner-controls{right:var(--space-3);bottom:var(--space-3);left:var(--space-3);justify-content:flex-end;align-items:center;gap:var(--space-2);pointer-events:none;flex-wrap:wrap;display:flex;position:absolute}.scene-corner-controls>*{pointer-events:auto}.scene-corner-controls .scene-view-buttons{flex-wrap:nowrap;margin:0}.scene-corner-controls .scene-view-buttons button{min-height:var(--visual-control-height,38px)}.vector-editor{gap:var(--space-3);border:0;grid-template-columns:repeat(3,minmax(0,1fr));padding:0;display:grid}.vector-editor legend{margin-bottom:var(--space-2);color:var(--color-muted);font-size:13px}.vector-editor.scalar-editor{grid-template-columns:minmax(180px,1fr) repeat(2,minmax(0,1fr))}.vector-editor label,.graph-toolbar label,.fold-card>label{color:var(--color-muted);gap:6px;font-size:12px;display:grid}.function-layout{gap:var(--space-4);grid-template-columns:minmax(300px,.7fr) minmax(520px,1.3fr);display:grid}.function-preset-row{align-items:center;gap:var(--space-2);margin-bottom:var(--space-4);flex-wrap:wrap;display:flex}.function-workspace{align-items:start;gap:var(--space-4);grid-template-columns:minmax(300px,.62fr) minmax(560px,1.38fr);display:grid}.function-list-panel,.function-visual-panel{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);min-width:0;padding:var(--space-4)}.function-list-panel{gap:var(--space-4);display:grid}.function-entry-list{gap:var(--space-2);display:grid}.function-entry{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-2);grid-template-columns:8px 18px minmax(0,1fr) 38px 38px;display:grid}.function-entry.has-error{border-color:var(--color-danger)}.function-color{border-radius:4px;width:8px;height:42px}.drag-hint{width:16px;color:var(--color-muted)}.function-input-wrap{gap:4px;min-width:0;display:grid}.function-input-wrap input{width:100%;min-width:0;font-family:var(--font-mono,monospace)}.function-input-wrap small{color:var(--color-muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.function-entry.has-error small{color:var(--color-danger)}.visualization-tool button.icon-only{width:36px;padding:0}.function-visual-panel{top:var(--space-4);position:sticky}.graph-toolbar{justify-content:space-between;align-items:center;gap:var(--space-2);margin-bottom:var(--space-3);display:flex}.graph-toolbar>span{align-items:center;gap:var(--space-2);color:var(--color-muted);font-size:12px;display:inline-flex}.graph-toolbar>span svg{width:16px}.function-graph{cursor:grab}.function-graph:active{cursor:grabbing}.implicit-path{stroke-width:3.5px}.surface-wireframe path{fill:none;stroke-width:1.2px;stroke-opacity:.7;vector-effect:non-scaling-stroke}.graph-grid text{fill:var(--color-muted);font-size:10px;font-weight:500}.graph-axis-labels text{fill:var(--color-text);font-size:13px;font-weight:800}.parameter-dock{gap:var(--space-3);margin-top:var(--space-3);border-top:1px solid var(--color-border);padding-top:var(--space-3);display:grid}.parameter-dock .panel-heading>span{color:var(--color-secondary);font-size:12px;font-weight:700}.parameter-strip{gap:var(--space-3);padding-bottom:var(--space-2);scroll-snap-type:x proximity;display:flex;overflow-x:auto}.parameter-strip article{gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-width:210px;padding:var(--space-3);scroll-snap-align:start;flex:0 0 210px;display:grid}.parameter-strip article>div{justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.parameter-strip article input[type=number]{width:96px}.parameter-strip article input[type=range]{width:100%}.parameter-range-control{align-items:center;gap:var(--space-2);color:var(--color-muted);grid-template-columns:auto 1fr auto;font-size:10px;font-weight:600;display:grid!important}.parameter-range-control>div{justify-content:center;align-items:center;gap:5px;display:flex}.visualization-tool .parameter-range-control button{width:25px;min-height:25px;padding:0}.parameter-range-control button svg{width:12px}.expression-panel{align-content:start;gap:var(--space-4);display:grid}.expression-panel>label{gap:var(--space-2);font-weight:700;display:grid}.expression-panel textarea{resize:vertical;min-height:128px;font-family:var(--font-mono,monospace);line-height:1.6}.field-help{margin:0;font-size:12px;line-height:1.6}.parameter-list{gap:var(--space-3);display:grid}.parameter-list article{gap:var(--space-2);border-top:1px solid var(--color-border);padding-top:var(--space-3);display:grid}.parameter-heading,.range-editor,.graph-toolbar{justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.parameter-heading input{width:110px}.parameter-list input[type=range],.fold-card input[type=range]{width:100%}.range-editor input{min-width:0}.range-editor span{color:var(--color-muted);font-size:12px}.graph-panel{min-width:0}.graph-toolbar{margin-bottom:var(--space-3);justify-content:flex-start}.graph-toolbar label{grid-template-columns:auto 74px;align-items:center}.graph-toolbar output{color:var(--color-secondary);margin-left:auto;font-weight:700}.function-graph{cursor:crosshair;margin-top:0}.function-path{fill:none;stroke-width:3px;vector-effect:non-scaling-stroke}.sample-line{stroke:var(--color-secondary);stroke-width:1.5px;stroke-dasharray:5 5}.function-graph text{fill:var(--color-text);font-size:12px;font-weight:700}.function-legend{gap:var(--space-3);margin:var(--space-3) 0;flex-wrap:wrap;display:flex}.function-legend span{font-family:var(--font-mono,monospace);align-items:center;gap:7px;font-size:12px;display:flex}.value-table{border:1px solid var(--color-border);border-radius:var(--radius-sm);overflow-x:auto}.value-table>div{border-bottom:1px solid var(--color-border);grid-template-columns:110px repeat(5,1fr);min-width:520px;display:grid}.value-table>div:last-child{border-bottom:0}.value-table strong,.value-table span{padding:var(--space-2);text-align:center}.value-table strong{border-right:1px solid var(--color-border);background:var(--color-surface)}.net-toolbar .status-good,.net-toolbar .status-warn{margin-left:auto}.status-good{color:var(--color-primary)}.status-warn{color:var(--color-secondary)}.net-layout{gap:var(--space-4);grid-template-columns:minmax(320px,.8fr) minmax(440px,1.2fr);display:grid}.net-edit-tools{gap:var(--space-2);margin-top:var(--space-3);flex-wrap:wrap;display:flex}.net-grid{width:min(100%,520px);margin:var(--space-4) auto;grid-template-columns:repeat(10,1fr);gap:3px;display:grid}.net-cell{aspect-ratio:1;border:1px dashed var(--color-border);color:var(--color-muted);background:0 0;border-radius:3px;font-weight:800}.net-cell:hover{border-color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, transparent)}.net-cell.active{border-style:solid;border-color:color-mix(in srgb, var(--face-color) 72%, var(--color-text));color:#061310;background:var(--face-color)}.net-cell.active.selected{outline:3px solid var(--color-text);outline-offset:2px}.net-edit-notice{min-height:20px;margin:var(--space-2) 0 0;color:var(--color-primary);font-size:12px}.net-edit-notice.warning{color:var(--color-secondary)}.fold-card{align-content:start;display:grid}.fold-label{fill:var(--color-text);stroke:color-mix(in srgb, var(--color-canvas) 54%, transparent);stroke-width:3px;paint-order:stroke;text-anchor:middle;dominant-baseline:central;pointer-events:none;font-size:18px;font-weight:900}.fold-group{cursor:pointer;opacity:.96;transition:opacity var(--duration-fast) var(--ease-standard)}.fold-face{fill-opacity:.96;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;filter:brightness(var(--fold-brightness)) drop-shadow(0 5px 7px color-mix(in srgb, var(--color-canvas) 28%, transparent))}.fold-face-light{opacity:var(--fold-highlight);stroke:none;pointer-events:none}.fold-face-inside-shade{fill:var(--cube-inside-far);opacity:var(--fold-inside-opacity);stroke:none;pointer-events:none}.fold-group.active-fold{opacity:1}.fold-group.active-fold .fold-face{stroke:var(--color-secondary);stroke-width:3.2px;filter:brightness(var(--fold-brightness)) drop-shadow(0 0 7px color-mix(in srgb, var(--color-secondary) 48%, transparent))}.fold-group .fold-face.selected{stroke:var(--color-primary);stroke-width:3.2px;stroke-linecap:round;stroke-linejoin:round}.fold-step-controls{align-items:end;gap:var(--space-3);margin-top:var(--space-2);grid-template-columns:auto minmax(180px,1fr) auto;display:grid}.fold-step-controls label{color:var(--color-muted);text-align:center;gap:6px;font-size:12px;display:grid}.fold-step-controls input{width:100%}.fold-step-track{margin-top:var(--space-3);grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;display:grid}.visualization-tool .fold-step-track button{min-width:0;min-height:50px;padding:var(--space-2);color:var(--color-muted);flex-direction:column;font-size:11px}.fold-step-track button span{background:var(--color-border);border-radius:50%;place-items:center;width:20px;height:20px;display:grid}.fold-step-track button.active{border-color:var(--color-secondary);color:var(--color-secondary)}.fold-step-track button.completed{border-color:var(--color-primary);color:var(--color-primary)}.fold-step-track button.completed span{color:var(--color-canvas);background:var(--color-primary)}@media (max-width:1100px){.net-layout,.orthographic-layout,.object-editor{grid-template-columns:minmax(0,1fr)}.projection-panel{grid-template-rows:none;grid-template-columns:repeat(3,minmax(220px,1fr));overflow-x:auto}}.paper-material-comparison{gap:var(--space-3);margin-bottom:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);padding:var(--space-4);display:grid}.paper-material-comparison>header{justify-content:space-between;align-items:center;gap:var(--space-4);display:flex}.paper-material-comparison>header>div:first-child{gap:3px;display:grid}.paper-material-comparison>header strong{color:var(--color-text)}.paper-material-comparison>header small{color:var(--color-muted);font-size:11px}.paper-material-tabs{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-page);grid-template-columns:repeat(4,minmax(0,1fr));min-width:min(560px,100%);padding:4px;display:grid}.visualization-tool .paper-material-tabs button{min-width:0;min-height:38px;color:var(--color-muted);background:0 0;border:0;padding:7px 10px;font-size:12px}.visualization-tool .paper-material-tabs button.active{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-surface));box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 40%, transparent)}.paper-material-angle{align-items:center;gap:var(--space-3);color:var(--color-muted);grid-template-columns:minmax(160px,auto) minmax(260px,1fr);font-size:12px;display:grid}.paper-material-angle span{justify-content:space-between;align-items:baseline;gap:10px;display:flex}.paper-material-angle b{color:var(--color-primary);font-size:16px}.paper-material-angle input{width:100%}.paper-material-preview-grid{gap:var(--space-3);grid-template-columns:minmax(0,1fr);min-width:0;display:grid}.paper-material-comparison.is-comparing .paper-material-preview-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.paper-material-preview-card{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-page);grid-template-rows:auto auto auto;min-width:0;display:grid;overflow:hidden}.paper-material-preview-heading{align-content:center;gap:3px;min-height:62px;padding:9px 12px;display:grid}.paper-material-preview-heading>span{align-items:center;gap:7px;display:flex}.paper-material-preview-heading svg{width:17px;height:17px;color:var(--color-primary)}.paper-material-preview-heading strong{font-size:13px}.paper-material-preview-heading small{color:var(--color-muted);font-size:10px}.paper-material-viewport{background:#0b1b24;min-height:230px;position:relative;overflow:hidden}.paper-material-comparison.is-focused .paper-material-viewport{min-height:min(54vh,520px)}.paper-material-viewport>canvas,.paper-material-viewport>svg{width:100%;height:100%;display:block;position:absolute;inset:0}.paper-material-engine-note{border-top:1px solid var(--color-border);min-height:34px;color:var(--color-muted);align-items:center;gap:6px;padding:7px 11px;font-size:10px;display:flex}.paper-material-engine-note svg{width:14px;height:14px;color:var(--color-secondary)}.paper-continuous-studio{overflow-anchor:none;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);display:grid;overflow:hidden}.paper-live-renderer-bar{justify-content:space-between;align-items:center;gap:var(--space-4);border-bottom:1px solid var(--color-border);min-height:68px;padding:var(--space-2) var(--space-4);display:flex}.paper-live-renderer-bar>div:first-child{gap:3px;display:grid}.paper-live-renderer-bar strong{font-size:13px}.paper-live-renderer-bar small{color:var(--color-muted);font-size:11px}.paper-live-renderer-tabs{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-page);grid-template-columns:repeat(3,minmax(0,1fr));width:min(520px,100%);padding:4px;display:grid}.paper-material-controls{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.paper-material-controls>svg{width:18px;color:var(--color-primary)}.paper-palette-grid{align-items:center;gap:7px;display:flex}.paper-material-controls>label{color:var(--color-muted);align-items:center;gap:7px;font-size:11px;display:flex}.paper-material-controls input[type=color]{aspect-ratio:1;border:1px solid var(--color-border);background:0 0;border-radius:50%;width:28px;min-width:28px;height:28px;min-height:28px;padding:3px}.paper-material-controls input[type=color]::-webkit-color-swatch-wrapper{padding:0}.paper-material-controls input[type=color]::-webkit-color-swatch{border:0;border-radius:50%}.paper-material-controls input[type=color]::-moz-color-swatch{border:0;border-radius:50%}.visualization-tool .paper-material-controls>button:not(.paper-color-swatch){align-items:center;gap:6px;min-height:36px;padding:7px 10px;display:inline-flex}.paper-material-controls>button svg{width:15px}.visualization-tool .paper-color-swatch{aspect-ratio:1;box-sizing:border-box;border:2px solid color-mix(in srgb, var(--paper-swatch) 74%, var(--color-border));flex:0 0 28px;max-width:28px;max-height:28px;padding:0;box-shadow:inset 0 2px 4px #fff6;background:var(--paper-swatch)!important;border-radius:50%!important;width:28px!important;min-width:28px!important;height:28px!important;min-height:28px!important}.visualization-tool .paper-color-swatch[aria-pressed=true]{outline:2px solid var(--color-primary);outline-offset:2px}.visualization-tool .paper-live-renderer-tabs button{min-width:0;min-height:38px;color:var(--color-muted);background:0 0;border:0;padding:7px 10px;font-size:12px}.visualization-tool .paper-live-renderer-tabs button.active{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-surface));box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 40%, transparent)}.paper-live-canvas-shell{overflow-anchor:none;background:var(--color-page);min-height:min(62vh,620px);position:relative;overflow:hidden}.paper-live-webgl{z-index:0;width:100%;height:100%;display:block;position:absolute;inset:0}.paper-view-angle-control{z-index:5;border:1px solid color-mix(in srgb, var(--color-primary) 36%, var(--color-border));background:color-mix(in srgb, var(--color-canvas) 86%, transparent);width:44px;box-shadow:0 10px 28px color-mix(in srgb, var(--color-page) 58%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:999px;justify-items:center;gap:7px;padding:10px 6px;display:grid;position:absolute;bottom:16px;right:14px}.paper-view-angle-control span{color:var(--color-muted);writing-mode:horizontal-tb;font-size:10px;font-weight:900}.paper-view-angle-control input[type=range]{appearance:none;writing-mode:vertical-lr;background:linear-gradient(var(--color-border), var(--color-border)) center / 4px calc(100% - 18px) no-repeat;cursor:ns-resize;direction:rtl;border:0;width:28px;height:150px;min-height:0;margin:0;padding:0}.paper-view-angle-control input[type=range]::-webkit-slider-runnable-track{background:0 0;border:0;width:4px}.paper-view-angle-control input[type=range]::-webkit-slider-thumb{border:3px solid var(--color-canvas);appearance:none;background:var(--color-primary);width:20px;height:20px;box-shadow:0 0 0 2px color-mix(in srgb, var(--color-primary) 72%, white);border-radius:50%;margin-left:-8px}.paper-view-angle-control input[type=range]::-moz-range-track{background:var(--color-border);border:0;width:4px}.paper-view-angle-control input[type=range]::-moz-range-thumb{border:3px solid var(--color-canvas);background:var(--color-primary);width:16px;height:16px;box-shadow:0 0 0 2px color-mix(in srgb, var(--color-primary) 72%, white);border-radius:50%}.paper-fold-guide{z-index:3;border:1px solid color-mix(in srgb, var(--color-primary) 42%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-canvas) 86%, transparent);width:min(224px,100% - 32px);box-shadow:0 12px 30px color-mix(in srgb, var(--color-page) 62%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);pointer-events:none;gap:5px;padding:10px 12px 9px;display:grid;position:absolute;top:16px;right:16px}.paper-fold-guide header{justify-content:space-between;align-items:baseline;gap:8px;display:flex}.paper-fold-guide header strong{color:var(--color-text);font-size:12px}.paper-fold-guide header span{color:var(--color-primary);font-size:10px;font-weight:800}.paper-fold-guide svg{width:100%;height:116px;display:block}.paper-fold-map-sheet{fill:color-mix(in srgb, var(--color-surface) 88%, white);stroke:color-mix(in srgb, var(--color-text) 56%, var(--color-border));stroke-width:1.5px}.paper-fold-map-active{fill:color-mix(in srgb, var(--color-primary) 62%, var(--color-surface));stroke:var(--color-primary);stroke-width:1.7px}.paper-fold-map-unfold-target{fill:color-mix(in srgb, var(--color-primary) 19%, var(--color-surface));stroke:color-mix(in srgb, var(--color-primary) 62%, var(--color-border));stroke-width:1.4px;stroke-dasharray:4 3}.paper-fold-map-unfold-complete{fill:color-mix(in srgb, var(--color-primary) 19%, var(--color-surface));stroke:var(--color-primary);stroke-width:1.6px}.paper-fold-map-crease{stroke:color-mix(in srgb, var(--color-muted) 58%, transparent);stroke-width:1px;stroke-dasharray:4 3}.paper-fold-map-arrow line,.paper-fold-map-arrow path{fill:none;stroke:color-mix(in srgb, var(--color-secondary) 88%, white);stroke-width:2.2px;stroke-linecap:round;stroke-linejoin:round}.paper-fold-guide text{pointer-events:none;font-size:8px;font-weight:800}.paper-fold-map-light-label{fill:var(--color-muted)}.paper-fold-map-dark-label{fill:var(--color-text);text-anchor:middle;paint-order:stroke;stroke:color-mix(in srgb, var(--color-canvas) 72%, transparent);stroke-width:2px}.paper-fold-guide p{color:var(--color-muted);text-align:center;margin:0;font-size:10px}.paper-motion-status{z-index:4;border:1px solid color-mix(in srgb, var(--color-primary) 44%, var(--color-border));background:color-mix(in srgb, var(--color-canvas) 88%, transparent);min-height:34px;color:var(--color-text);box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);pointer-events:none;border-radius:999px;align-items:center;gap:8px;padding:7px 13px;font-size:11px;font-weight:800;display:flex;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.paper-motion-status span{background:var(--color-primary);width:8px;height:8px;box-shadow:0 0 0 5px color-mix(in srgb, var(--color-primary) 16%, transparent);animation:paper-motion-pulse var(--motion-duration-normal) var(--motion-ease-standard) infinite alternate;border-radius:50%}@keyframes paper-motion-pulse{to{opacity:.62;transform:scale(.68)}}@media (prefers-reduced-motion:reduce){.paper-motion-status span{animation:none}}.paper-live-canvas-shell .paper-continuous-canvas{z-index:1;min-height:min(62vh,620px);position:relative}.paper-continuous-canvas.is-webgl-overlay{pointer-events:none;background:0 0}.paper-continuous-canvas.is-webgl-overlay :is(.paper-cut-hit-target,.paper-cut-handle){pointer-events:auto}.paper-continuous-canvas.is-webgl-overlay :is(.paper-original-outline,.paper-stack-layer,.paper-folded-area,.paper-fold-stationary,.paper-fold-moving-flap,.paper-fold-flap-shadow,.paper-cut-sheet,.paper-3d-panel,.paper-3d-cut),.paper-continuous-canvas.is-webgl-overlay :is(.paper-fold-edge-hints,.paper-fold-center-label,.paper-fold-progress-label,.paper-fold-live-crease){opacity:0}@media (max-width:820px){.paper-live-renderer-bar{flex-direction:column;align-items:stretch}.paper-live-renderer-tabs{width:100%}.paper-material-controls{justify-content:flex-start}.paper-fold-guide{width:186px;padding:8px 9px;top:10px;right:10px}.paper-fold-guide svg{height:96px}.paper-view-angle-control{width:40px;padding-inline:4px;right:8px}.paper-view-angle-control input[type=range]{height:120px}}@media (max-width:1120px){.paper-material-comparison>header{flex-direction:column;align-items:stretch}.paper-material-tabs{width:100%;min-width:0}.paper-material-comparison.is-comparing .paper-material-preview-grid{grid-template-columns:1fr 1fr}.paper-material-comparison.is-comparing .paper-material-preview-card:last-child{grid-column:1/-1}}@media (max-width:720px){.paper-material-tabs{grid-template-columns:1fr 1fr}.paper-material-angle,.paper-material-comparison.is-comparing .paper-material-preview-grid{grid-template-columns:1fr}.paper-material-comparison.is-comparing .paper-material-preview-card:last-child{grid-column:auto}.paper-material-viewport{min-height:260px}}.paper-stage-header{justify-content:space-between;align-items:center;gap:var(--space-4);border-bottom:1px solid var(--color-border);min-height:76px;padding:var(--space-3) var(--space-4);display:flex}.paper-stage-header>div:first-child{gap:4px;display:grid}.paper-stage-header strong{font-size:17px}.paper-stage-header small{color:var(--color-muted);font-size:12px}.paper-stage-status{flex:none;align-items:center;gap:8px;display:flex}.paper-stage-status span{border:1px solid var(--color-border);min-width:74px;min-height:30px;color:var(--color-muted);border-radius:999px;justify-content:center;align-items:center;gap:6px;font-size:12px;font-weight:800;display:flex}.paper-stage-status span b{background:var(--color-surface);border-radius:50%;place-items:center;width:19px;height:19px;font-size:10px;display:grid}.paper-stage-status span.active{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, transparent)}.paper-stage-status span.active b{color:var(--color-primary-contrast);background:var(--color-primary)}.paper-stage-status span.completed{color:color-mix(in srgb, var(--color-primary) 64%, var(--color-muted))}.paper-stage-status span.completed b{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 14%, var(--color-surface))}.paper-stage-status i{background:var(--color-border);width:18px;height:1px}.paper-stage-toolbar{align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-border);min-height:112px;padding:var(--space-2) var(--space-4);flex-wrap:wrap;display:flex}.paper-stage-toolbar.compact{justify-content:flex-end;min-height:112px}.paper-stage-toolbar.compact>span{min-width:0;color:var(--color-muted);flex:1;align-items:center;gap:8px;font-size:13px;display:flex}.paper-stage-toolbar>label{min-width:110px;color:var(--color-muted);gap:4px;font-size:11px;display:grid}.paper-stage-toolbar>label input{width:100%}.paper-stage-toolbar .paper-cut-tools{flex-wrap:nowrap;flex:360px}.paper-stage-toolbar .paper-cut-actions{flex-wrap:nowrap;flex:100%;justify-content:flex-end}.paper-continuous-canvas{background:radial-gradient(circle at 50% 43%, color-mix(in srgb, var(--color-primary) 9%, transparent), transparent 50%), linear-gradient(180deg, color-mix(in srgb, var(--color-page) 96%, var(--color-primary)), var(--color-page));touch-action:none;border:0;width:100%;min-height:min(62vh,620px);display:block}.paper-stage-help{border-top:1px solid var(--color-border);min-height:46px;padding:12px var(--space-4);color:var(--color-muted);margin:0;font-size:13px}.paper-continuous-playback{align-items:end;gap:var(--space-3);border-top:1px solid var(--color-border);padding:var(--space-3) var(--space-4);grid-template-columns:auto minmax(240px,1fr);display:grid}.paper-continuous-playback label{color:var(--color-muted);text-align:center;gap:6px;font-size:12px;display:grid}.paper-continuous-playback input{width:100%}.paper-stack-layer{fill:color-mix(in srgb, var(--color-primary) 11%, #fffdf5);stroke:color-mix(in srgb, var(--color-primary) 50%, var(--color-border));stroke-width:1.5px;pointer-events:none}.paper-fold-stationary,.paper-fold-moving-flap{fill:color-mix(in srgb, var(--color-primary) 13%, #fffdf5);stroke:color-mix(in srgb, var(--color-primary) 78%, var(--color-text));stroke-width:2.5px;stroke-linejoin:round}.paper-fold-stationary{filter:url(#paper-real-material)}.paper-fold-moving-flap{fill:url(#paper-fold-surface-gradient);filter:url(#paper-real-flap);pointer-events:none}.paper-fold-flap-shadow{fill:color-mix(in srgb, var(--color-page) 76%, transparent);opacity:.62;pointer-events:none}.paper-fold-live-crease{stroke:color-mix(in srgb, var(--color-primary) 88%, white);stroke-width:2px;stroke-dasharray:7 5;pointer-events:none}.paper-fold-progress-label,.paper-fold-center-label{fill:var(--color-text);text-anchor:middle;paint-order:stroke;stroke:color-mix(in srgb, var(--color-page) 82%, transparent);stroke-width:5px;pointer-events:none;font-size:13px;font-weight:800}.paper-fold-center-label{fill:var(--color-muted)}.paper-fold-edge-hints line{stroke:var(--color-primary);stroke-width:8px;opacity:.55;pointer-events:none}.paper-workflow-tabs{gap:var(--space-2);margin-bottom:var(--space-4);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.visualization-tool .paper-workflow-tabs button{border-color:var(--color-border);background:var(--color-canvas);justify-content:flex-start;min-height:58px}.paper-workflow-tabs button span{width:26px;height:26px;color:var(--color-muted);background:var(--color-surface);border-radius:50%;place-items:center;display:grid}.paper-workflow-tabs button.active{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 9%, var(--color-canvas))}.paper-workflow-tabs button.active span{color:var(--color-canvas);background:var(--color-primary)}.paper-fold-layout,.paper-unfold-shell{align-items:start;gap:var(--space-4);grid-template-columns:minmax(280px,.68fr) minmax(520px,1.32fr);display:grid}.paper-unfold-shell{grid-template-columns:minmax(560px,1.35fr) minmax(300px,.65fr)}.paper-control-card,.paper-canvas-card,.paper-unfold-card,.paper-result-card{align-content:start;gap:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);min-width:0;padding:var(--space-4);display:grid}.paper-control-card>label,.paper-cut-toolbar>label{color:var(--color-muted);grid-template-columns:1fr auto;align-items:center;gap:7px;font-size:13px;display:grid}.paper-control-card>label select,.paper-control-card>label input,.paper-cut-toolbar>label select,.paper-cut-toolbar>label input{grid-column:1/-1;width:100%}.paper-control-card output,.paper-cut-toolbar output{color:var(--color-primary);font-weight:800}.paper-preset-row,.paper-fold-axis,.paper-cut-tools,.paper-cut-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.paper-preset-row button{flex:110px}.paper-fold-axis{border:0;margin:0;padding:0}.paper-fold-axis legend{width:100%;color:var(--color-muted);margin-bottom:7px;font-size:13px}.paper-fold-axis button{flex:1}.paper-fold-axis .toggle-active,.paper-cut-tools .toggle-active{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, transparent)}.paper-fold-list{border-top:1px solid var(--color-border);padding-top:var(--space-3);gap:7px;display:grid}.paper-fold-list>div{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:8px 10px;display:flex}.paper-fold-list>div>span{flex:1;gap:2px;display:grid}.paper-fold-list small,.paper-fold-list p{color:var(--color-muted);font-size:12px}.paper-fold-list button{width:36px;min-width:36px;padding:0!important}.paper-fold-editor,.paper-cut-editor,.paper-unfold-canvas,.paper-flat-result{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:radial-gradient(circle at 50% 38%, color-mix(in srgb, var(--color-primary) 8%, transparent), transparent 52%), var(--color-page);touch-action:none;width:100%;display:block}.paper-original-outline{fill:color-mix(in srgb, var(--color-text) 2%, transparent);stroke:color-mix(in srgb, var(--color-muted) 62%, transparent);stroke-width:2px;stroke-dasharray:8 7}.paper-folded-area,.paper-cut-sheet{fill:color-mix(in srgb, var(--color-primary) 13%, #fffdf5);stroke:color-mix(in srgb, var(--color-primary) 78%, var(--color-text));stroke-width:3px;filter:url(#paper-real-material)}.paper-fold-line line{stroke:color-mix(in srgb, var(--color-muted) 72%, transparent);stroke-width:2px;stroke-dasharray:7 6}.paper-fold-line text{fill:var(--color-muted);font-size:13px;font-weight:800}.paper-fold-line.candidate line{cursor:grab;stroke:var(--color-primary);stroke-width:7px;stroke-dasharray:12 7}.paper-fold-line.candidate text{fill:var(--color-primary)}.paper-fold-arrow line,.paper-fold-arrow path{fill:var(--color-primary);stroke:var(--color-primary);stroke-width:4px;pointer-events:none}.paper-fold-gesture-preview{fill:color-mix(in srgb, var(--color-primary) 32%, var(--color-surface));stroke:var(--color-primary);stroke-width:3px;opacity:.84;filter:drop-shadow(0 14px 12px color-mix(in srgb, var(--color-primary) 22%, transparent));pointer-events:none}.paper-cut-layout{gap:var(--space-4);display:grid}.paper-cut-toolbar{align-items:end;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);padding:var(--space-3);grid-template-columns:minmax(310px,auto) minmax(180px,1fr) auto;display:grid}.paper-cut-tools button,.paper-cut-actions button{min-width:0}.paper-cut-path{fill:none;stroke:color-mix(in srgb, var(--color-primary) 70%, white);stroke-width:1.25px;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;pointer-events:none}.paper-cut-path.preview{opacity:.56;stroke-dasharray:9 7}.paper-cut-path:is(polygon){fill:color-mix(in srgb, var(--color-page) 76%, transparent)}.paper-cut-hit-target{fill:none;stroke:var(--color-text);stroke-width:18px;stroke-linecap:round;stroke-linejoin:round;opacity:0;pointer-events:stroke;cursor:pointer}.paper-cut-hit-target:is(polygon){fill:var(--color-text);opacity:0;pointer-events:all}.paper-cut-selectable.selected .paper-cut-path{stroke:color-mix(in srgb, var(--color-primary) 88%, white);stroke-width:1.75px}.paper-edit-mask-cut{fill:#000;stroke:#000;stroke-width:6px;stroke-linecap:round;stroke-linejoin:round}.paper-cut-control-guide{stroke:color-mix(in srgb, var(--color-primary) 54%, transparent);stroke-width:1.5px;stroke-dasharray:6 5;pointer-events:none}.paper-cut-handle{r:4.5px;fill:var(--color-canvas);stroke:var(--color-primary);stroke-width:2px;cursor:move}.paper-cut-handle.control{r:3.75px;fill:var(--color-primary)}.paper-cut-control-mode{align-items:end;gap:var(--space-2);border:0;min-width:210px;margin:0;padding:0;display:flex}.paper-cut-control-mode legend{width:100%;color:var(--color-muted);font-size:12px}.paper-cut-control-mode button{flex:1;min-width:0}.paper-polygon-edit-hint{align-items:center;gap:var(--space-2);min-width:300px;color:var(--color-muted);font-size:11px;line-height:1.35;display:flex}.paper-polygon-edit-hint>span{border:1px solid color-mix(in srgb, var(--color-primary) 28%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-surface) 78%, transparent);grid-template-rows:auto auto;grid-template-columns:28px auto;align-items:center;column-gap:7px;min-width:0;padding:5px 8px;display:grid}.paper-polygon-edit-hint i{border:1px solid color-mix(in srgb, var(--color-primary) 64%, white);width:28px;height:28px;color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, var(--color-canvas));border-radius:50%;grid-row:1/3;place-items:center;display:grid}.paper-polygon-edit-hint i.scale{color:#ffd46b;background:color-mix(in srgb, #ffd46b 9%, var(--color-canvas));border-color:#ffe197}.paper-polygon-edit-hint svg{width:16px;height:16px}.paper-polygon-edit-hint b{color:var(--color-text);font-size:12px}.paper-unfold-canvas{cursor:grab;min-height:440px}.paper-unfold-canvas.connecting{cursor:progress}.paper-unfold-canvas:active{cursor:grabbing}.paper-3d-panel{fill:color-mix(in srgb, var(--color-primary) calc(18% + var(--paper-layer) * 2%), var(--color-surface));stroke:color-mix(in srgb, var(--color-primary) 74%, var(--color-text));stroke-width:2.2px;stroke-linejoin:round;filter:drop-shadow(0 10px 8px color-mix(in srgb, var(--color-page) 46%, transparent))}.paper-3d-cut{fill:none;stroke:color-mix(in srgb, var(--color-page) 86%, transparent);stroke-width:5.5px;stroke-linecap:round;stroke-linejoin:round}.paper-3d-cut.closed{fill:color-mix(in srgb, var(--color-page) 92%, transparent)}.paper-unfold-controls{align-items:end;gap:var(--space-2);grid-template-columns:auto minmax(180px,1fr) auto auto;display:grid}.paper-unfold-controls label{color:var(--color-muted);text-align:center;gap:7px;font-size:12px;display:grid}.paper-unfold-controls input{width:100%}.paper-result-card>p{color:var(--color-muted);text-align:center;margin:0;font-size:13px}.paper-flat-result{background:var(--color-page)}.paper-result-sheet{fill:color-mix(in srgb, var(--color-primary) 19%, var(--color-surface));stroke:var(--color-primary);stroke-width:3px}.paper-result-crease{stroke:color-mix(in srgb, var(--color-muted) 58%, transparent);stroke-width:1.4px;stroke-dasharray:6 6}.paper-result-cut-outline{fill:none;stroke:color-mix(in srgb, var(--color-primary) 76%, white);stroke-width:2.5px;stroke-linecap:round;stroke-linejoin:round}.paper-mask-cut{fill:#000;stroke:#000;stroke-width:12px;stroke-linecap:round;stroke-linejoin:round}@media (max-width:980px){.paper-fold-layout,.paper-unfold-shell{grid-template-columns:1fr}.paper-cut-toolbar{grid-template-columns:1fr 1fr}.paper-cut-actions{justify-content:flex-end}}@media (max-width:680px){.paper-workflow-tabs,.paper-cut-toolbar,.paper-unfold-controls{grid-template-columns:1fr}.paper-cut-tools,.paper-cut-actions{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.paper-cut-actions{grid-template-columns:repeat(2,minmax(0,1fr))}.paper-unfold-canvas{min-height:320px}}.direction-toolbar{align-items:end;gap:var(--space-2);margin-bottom:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);padding:var(--space-3);flex-wrap:wrap;display:flex}.direction-presets{gap:6px;display:flex}.direction-presets button.active{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, transparent)}.direction-toolbar>label{min-width:180px;color:var(--color-muted);gap:5px;font-size:12px;display:grid}.direction-layout{align-items:start;gap:var(--space-4);grid-template-columns:minmax(600px,1.42fr) minmax(280px,.58fr);display:grid}.direction-scene-card,.direction-info-card{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);min-width:0;padding:var(--space-4);display:grid}.direction-pitch{width:min(230px,40vw);color:var(--color-muted);text-align:right;gap:5px;font-size:12px;display:grid}.direction-pitch input{width:100%}.direction-scene{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:radial-gradient(circle at 50% 35%, color-mix(in srgb, var(--color-primary) 8%, transparent), transparent 55%), var(--color-page);touch-action:none;cursor:grab;width:100%;min-height:480px;display:block}.direction-scene:active{cursor:grabbing}.direction-ground{fill:url(#direction-ground);stroke:color-mix(in srgb, var(--color-primary) 45%, var(--color-border));stroke-width:2px}.direction-grid-line{stroke:color-mix(in srgb, var(--color-primary) 14%, transparent);stroke-width:1px;pointer-events:none}.direction-object{cursor:move;filter:drop-shadow(0 10px 8px #00000042)}.direction-object polygon{stroke:#ffffff47;stroke-width:1.3px;stroke-linejoin:round}.direction-object.selected{filter:drop-shadow(0 0 10px color-mix(in srgb, var(--color-primary) 78%, transparent))}.direction-object.selected polygon{stroke:var(--color-primary);stroke-width:3px}.direction-tree-crown{fill:#65d475;stroke:#baf4bd;stroke-width:3px}.direction-object-label rect{fill:color-mix(in srgb, var(--color-page) 84%, transparent);stroke:color-mix(in srgb, var(--color-primary) 50%, var(--color-border));stroke-width:1.5px}.direction-object-label text{fill:var(--color-text);pointer-events:none;font-size:13px;font-weight:800}.direction-world-compass{pointer-events:none}.direction-world-compass line{stroke:var(--color-primary);stroke-width:3px;stroke-dasharray:7 5}.direction-world-compass circle{fill:var(--color-page);stroke:var(--color-primary);stroke-width:2px}.direction-world-compass text{fill:var(--color-primary);font-size:13px;font-weight:900}.direction-selected{align-items:center;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 45%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-primary) 7%, transparent);padding:var(--space-3);display:flex}.direction-selected>svg{width:34px;height:34px;color:var(--color-primary)}.direction-selected>div{gap:3px;display:grid}.direction-selected small,.direction-info-card>p{color:var(--color-muted);font-size:12px}.direction-compass-card{border:1px solid var(--color-border);background:radial-gradient(circle, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 64%);width:190px;height:190px;color:var(--color-primary);border-radius:50%;grid-template:repeat(3,1fr)/repeat(3,1fr);justify-self:center;place-items:center;font-weight:900;display:grid}.direction-compass-card svg{grid-area:2/2;width:54px;height:54px}.direction-compass-card .north{grid-area:1/2}.direction-compass-card .east{grid-area:2/3}.direction-compass-card .south{grid-area:3/2}.direction-compass-card .west{grid-area:2/1}.direction-relations{grid-template-columns:1fr 1fr;gap:7px;display:grid}.direction-relations button{text-align:left;justify-items:start;gap:3px;min-width:0;display:grid}.direction-relations button b{color:var(--color-primary)}.direction-relations button span{text-overflow:ellipsis;white-space:nowrap;max-width:100%;overflow:hidden}.direction-info-card>p{margin:0;line-height:1.7}.direction-engine-picker{gap:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.direction-engine-picker>button{align-content:center;justify-items:start;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:radial-gradient(circle at 88% 18%, color-mix(in srgb, var(--color-primary) 16%, transparent), transparent 38%), var(--color-canvas);text-align:left;min-height:260px;padding:clamp(24px,4vw,48px);display:grid}.direction-engine-picker>button:hover{border-color:var(--color-primary);transform:translateY(-2px)}.direction-engine-picker>button>span{background:color-mix(in srgb, var(--color-primary) 14%, transparent);width:54px;height:54px;color:var(--color-primary);border-radius:16px;place-items:center;display:grid}.direction-engine-picker>button svg{width:28px;height:28px}.direction-engine-picker>button strong{font-size:clamp(22px,2.4vw,34px)}.direction-engine-picker>button small{max-width:460px;color:var(--color-muted);font-size:14px;line-height:1.65}.direction-engine-picker>button b{color:var(--color-primary);font-size:13px}.direction-compare-brief{align-items:center;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4);display:flex}.direction-compare-brief svg{width:28px;height:28px;color:var(--color-primary);flex:none}.direction-compare-brief p{color:var(--color-muted);margin:0;line-height:1.7}.direction-game-experience{width:100%;min-width:0}.direction-game-loading{place-content:center;justify-items:center;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);color:#dffbf7;background:#0a1b26;width:100%;min-height:590px;font-weight:800;display:grid}.direction-game-loading span{border:3px solid #56dccc3d;border-top-color:#56dccc;border-radius:50%;width:34px;height:34px;animation:.8s linear infinite direction-game-spin}@keyframes direction-game-spin{to{transform:rotate(360deg)}}.fraction-mode-tabs{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);grid-template-columns:repeat(3,minmax(0,1fr));display:grid;overflow:hidden}.fraction-mode-tabs button{border:0;border-right:1px solid var(--color-border);min-height:52px;color:var(--color-muted);background:0 0;font-size:16px;font-weight:800}.fraction-mode-tabs button:last-child{border-right:0}.fraction-mode-tabs button[aria-selected=true]{background:color-mix(in srgb, var(--color-primary) 17%, transparent);box-shadow:inset 0 -3px 0 var(--color-primary);color:var(--color-primary)}.fraction-lab-stage{gap:var(--space-4);min-width:0;display:grid}.fraction-input-strip,.fraction-equivalent-inputs,.fraction-terms-editor{align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.fraction-input-strip{padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);justify-content:space-between}.fraction-input-strip>label,.fraction-decimal-field{color:var(--color-muted);gap:6px;font-size:13px;font-weight:800;display:grid}.fraction-input-strip select,.fraction-term-heading select,.fraction-decimal-field input{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-height:42px;color:var(--color-text);font:inherit;padding:0 12px}.fraction-fields{grid-template-rows:42px 3px 42px;gap:4px;width:clamp(82px,7vw,98px);display:grid}.fraction-fields>i{background:var(--color-text);border-radius:999px;justify-self:center;width:88%;height:3px}.fraction-fields label{min-width:0;display:block}.fraction-fields label>span{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.fraction-fields input{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);width:100%;height:42px;color:var(--color-text);text-align:center;font-size:18px;font-weight:900}.fraction-expression-hero,.fraction-calculation-expression{min-height:108px;color:var(--color-text);justify-content:center;align-items:center;gap:clamp(12px,3vw,28px);display:flex}.fraction-expression-hero svg,.fraction-calculation-expression>svg{width:30px;color:var(--color-muted)}.fraction-expression-hero.compact{min-height:86px}.fraction-notation{min-width:54px;color:var(--color-text);text-align:center;vertical-align:middle;grid-template-rows:1fr 3px 1fr;align-items:center;font-size:clamp(28px,4vw,46px);font-weight:900;line-height:1;display:inline-grid}.fraction-notation i{background:currentColor;border-radius:999px;width:100%;height:3px}.decimal-notation{color:var(--color-primary);font-variant-numeric:tabular-nums;font-size:clamp(30px,4vw,48px);font-weight:900}.decimal-repeat{border-top:2px solid;padding-top:2px}.fraction-bar-board,.fraction-operation-board{border:1px solid var(--color-border);border-radius:var(--radius-md);background:radial-gradient(circle at 50% -18%, color-mix(in srgb, var(--color-primary) 13%, transparent), transparent 44%), var(--color-canvas);padding:clamp(24px,5vw,58px);overflow:hidden}.fraction-unit-bars{gap:13px;width:100%;display:grid}.fraction-unit-row{grid-template-columns:30px minmax(0,1fr);align-items:center;gap:10px;display:grid}.fraction-unit-label{color:var(--color-muted);font-variant-numeric:tabular-nums;text-align:center;font-size:13px;font-weight:800}.fraction-cell-grid{grid-template-columns:repeat(var(--cell-count), minmax(0, 1fr));border:2px solid color-mix(in srgb, var(--color-text) 62%, var(--color-border));background:color-mix(in srgb, var(--color-surface) 76%, transparent);border-radius:8px;min-height:clamp(52px,8vw,82px);display:grid;overflow:hidden}.fraction-cell-grid>span,.fraction-cell-grid>button{border:0;border-right:1px solid color-mix(in srgb, var(--color-text) 34%, transparent);background:0 0;min-width:0;padding:0}.fraction-cell-grid>:last-child{border-right:0}.fraction-cell-grid>button{cursor:pointer;min-height:50px;position:relative}.fraction-cell-grid>button>span{position:absolute;inset:0}.fraction-cell-grid .active{background:linear-gradient(135deg, #ffffff29, transparent 44%), var(--color-primary);box-shadow:inset 0 -9px 18px #00000014}.fraction-cell-grid>button:hover>span{box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--color-primary) 65%, transparent)}.fraction-live-explanation{color:var(--color-muted);text-align:center;margin:0;font-size:15px;line-height:1.8}.fraction-live-explanation strong{color:var(--color-primary)}.fraction-equivalent-inputs{justify-content:center}.fraction-equivalent-inputs>div{padding:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);align-items:center;gap:12px;display:flex}.fraction-equivalent-inputs>div>span{color:var(--color-muted);font-weight:800}.fraction-equivalent-inputs>svg{color:var(--color-primary)}.fraction-equal-sign{font-size:42px;font-weight:900}.fraction-equal-sign.valid{color:var(--color-primary)}.fraction-equal-sign.invalid{color:var(--color-danger)}.fraction-bar-board.equivalence{place-items:center;min-height:230px;display:grid}.fraction-regrouping{gap:var(--space-3);width:min(100%,860px);display:grid}.fraction-regrouping-grid{grid-template-columns:repeat(var(--micro-count), minmax(0, 1fr));border:2px solid color-mix(in srgb, var(--color-text) 62%, var(--color-border));border-radius:10px;height:clamp(76px,10vw,108px);display:grid;position:relative;overflow:hidden}.fraction-regrouping-grid>span{border-right:1px solid color-mix(in srgb, var(--color-text) 18%, transparent);background:color-mix(in srgb, var(--color-surface) 72%, transparent)}.fraction-regrouping-grid>span.active{background:linear-gradient(135deg, #ffffff29, transparent 44%), var(--color-primary)}.fraction-boundaries{pointer-events:none;position:absolute;inset:0}.fraction-boundaries i{background:var(--color-text);width:3px;transition:opacity .52s var(--motion-ease-standard), transform .52s var(--motion-ease-standard);position:absolute;top:0;bottom:0;transform:translate(-1px)}.fraction-regrouping.source .source-boundaries i,.fraction-regrouping.target .target-boundaries i{opacity:.88;transform:translate(-1px)scaleY(1)}.fraction-regrouping.source .target-boundaries i,.fraction-regrouping.target .source-boundaries i{opacity:.12;transform:translate(-1px)scaleY(.56)}.fraction-regrouping-labels{color:var(--color-muted);justify-content:center;align-items:center;gap:14px;display:flex}.fraction-regrouping-labels strong{color:var(--color-primary)}.fraction-invalid-state{color:var(--color-muted);text-align:center;justify-items:center;gap:7px;display:grid}.fraction-invalid-state strong{color:var(--color-danger);font-size:20px}.fraction-play-row{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;display:flex}.fraction-play-row button,.fraction-terms-editor>button{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-height:44px;color:var(--color-text);justify-content:center;align-items:center;gap:8px;padding:0 16px;font-weight:800;display:inline-flex}.fraction-play-row button.primary{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-primary-contrast)}.fraction-play-row button:disabled,.fraction-terms-editor>button:disabled{cursor:not-allowed;opacity:.45}.fraction-play-row svg,.fraction-terms-editor svg{width:18px}.fraction-play-row>span{color:var(--color-muted);font-size:13px}.fraction-terms-editor{align-items:stretch}.fraction-term-editor{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-width:220px;padding:var(--space-3);flex:220px;gap:12px;display:grid}.fraction-term-heading{align-items:center;gap:8px;min-height:34px;display:flex}.fraction-term-heading>strong{color:var(--color-muted);margin-right:auto}.fraction-kind-switch{grid-template-columns:1fr 1fr;margin-left:auto;display:grid}.fraction-kind-switch button{border:1px solid var(--color-border);min-height:32px;color:var(--color-muted);background:0 0;padding:0 10px}.fraction-kind-switch button:first-child{border-radius:7px 0 0 7px}.fraction-kind-switch button:last-child{border-left:0;border-radius:0 7px 7px 0}.fraction-kind-switch button[aria-pressed=true]{background:color-mix(in srgb, var(--color-primary) 16%, transparent);color:var(--color-primary)}.fraction-remove-term{border:1px solid var(--color-border);width:32px;height:32px;color:var(--color-danger);background:0 0;border-radius:7px;place-items:center;padding:0;display:grid}.fraction-decimal-field input{width:100%;font-size:18px;font-weight:900}.fraction-calculation-expression{flex-wrap:wrap;gap:14px;min-height:100px}.fraction-calculation-expression>span:not(.fraction-notation):not(.decimal-notation){align-items:center;gap:14px;display:inline-flex}.fraction-calculation-expression b{color:var(--color-muted);font-size:30px}.fraction-calculation-expression .fraction-notation,.fraction-calculation-expression .decimal-notation{font-size:30px}.fraction-calculation-notice{border:1px solid color-mix(in srgb, var(--color-danger) 45%, var(--color-border));border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-danger) 8%, transparent);color:var(--color-text);padding:var(--space-3);text-align:center}.fraction-operation-board{gap:var(--space-4);padding:clamp(20px,4vw,42px);display:grid}.fraction-operation-lanes{gap:14px;display:grid}.fraction-operation-lane,.fraction-result-lane{grid-template-columns:108px minmax(0,1fr) 84px;align-items:center;gap:14px;display:grid}.fraction-operation-lane>span,.fraction-result-lane>span{color:var(--color-muted);font-size:13px;font-weight:800}.fraction-operation-lane>strong{color:var(--color-primary);text-align:center}.fraction-operation-lane .fraction-unit-row,.fraction-result-lane .fraction-unit-row{grid-template-columns:minmax(0,1fr)}.fraction-operation-lane .fraction-unit-label,.fraction-result-lane .fraction-unit-label{display:none}.fraction-operation-lane .fraction-cell-grid,.fraction-result-lane .fraction-cell-grid{min-height:42px}.fraction-operation-arrow{color:var(--color-muted);transition:color var(--motion-duration-normal) var(--motion-ease-standard);justify-content:center;align-items:center;gap:10px;display:flex}.phase-1 .fraction-operation-arrow,.phase-2 .fraction-operation-arrow{color:var(--color-primary)}.fraction-operation-arrow svg{transform:rotate(90deg)}.fraction-result-lane{border-top:1px solid var(--color-border);padding-top:var(--space-4);opacity:.42;transition:opacity var(--motion-duration-normal) var(--motion-ease-standard), transform var(--motion-duration-normal) var(--motion-ease-standard);transform:translateY(6px)}.phase-2 .fraction-result-lane{opacity:1;transform:translateY(0)}.fraction-result-expression{justify-content:center;align-items:center;gap:8px;display:flex}.fraction-result-lane .fraction-notation,.fraction-result-lane .decimal-notation{min-width:34px;font-size:22px}.fraction-result-lane svg{width:18px;color:var(--color-muted)}@media (max-width:760px){.fraction-mode-tabs button{min-height:46px;font-size:14px}.fraction-input-strip{align-items:stretch}.fraction-input-strip>label{grid-template-columns:1fr}.fraction-equivalent-inputs{grid-template-columns:1fr;display:grid}.fraction-equivalent-inputs>svg{justify-self:center;transform:rotate(90deg)}.fraction-equivalent-inputs>div{justify-content:space-between}.fraction-bar-board{padding:22px 14px}.fraction-unit-row{grid-template-columns:24px minmax(0,1fr);gap:6px}.fraction-cell-grid{min-height:52px}.fraction-terms-editor{grid-template-columns:1fr;display:grid}.fraction-term-editor{min-width:0}.fraction-operation-lane,.fraction-result-lane{grid-template-columns:1fr;gap:7px}.fraction-operation-lane>strong{text-align:left}.fraction-result-lane>div{justify-content:flex-start}}.fraction-continuous-lab{gap:clamp(14px,2.4vw,24px)}.fraction-unified-toolbar{align-items:end}.fraction-unified-toolbar>div:not(.fraction-toolbar-actions){gap:7px;display:grid}.fraction-unified-toolbar>div>span{color:var(--color-muted);font-size:12px;font-weight:800}.fraction-input-operator{border:1px solid color-mix(in srgb, var(--color-primary) 48%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));width:38px;height:38px;color:var(--color-primary);border-radius:999px;flex:0 0 38px;align-self:center;place-items:center;display:grid}.fraction-input-operator svg{width:20px;height:20px}.fraction-toolbar-actions{flex-wrap:wrap;align-items:center;gap:8px;margin-left:auto;display:flex}.fraction-toolbar-actions button,.fraction-practice-answer>button{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-height:42px;color:var(--color-text);justify-content:center;align-items:center;gap:7px;padding:0 14px;font-weight:800;display:inline-flex}.fraction-toolbar-actions button.primary,.fraction-practice-answer>button.primary{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-primary-contrast)}.fraction-toolbar-actions svg,.fraction-practice-answer svg{width:17px}.fraction-operation-switch{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);grid-template-columns:repeat(2,minmax(74px,1fr));display:inline-grid;overflow:hidden}.fraction-toolbar-actions .fraction-operation-switch button{border:0;border-right:1px solid var(--color-border);background:0 0;border-radius:0;min-height:40px;padding:0 12px}.fraction-toolbar-actions .fraction-operation-switch button:last-child{border-right:0}.fraction-toolbar-actions .fraction-operation-switch button[aria-pressed=true]{background:color-mix(in srgb, var(--color-primary) 16%, var(--color-canvas));box-shadow:inset 0 -3px 0 var(--color-primary);color:var(--color-primary)}.fraction-three-way-equation{grid-template-columns:minmax(0,1fr);align-items:center;gap:10px;min-width:0;display:grid}.fraction-three-way-equation.two-values{grid-template-columns:minmax(0,1fr);gap:12px}.fraction-triple-card,.fraction-practice-answer{border:1px solid var(--color-border);border-radius:var(--radius-md);background:radial-gradient(circle at 50% -25%, color-mix(in srgb, var(--color-primary) 13%, transparent), transparent 52%), var(--color-canvas);gap:10px;min-width:0;padding:clamp(12px,2vw,18px);display:grid}.fraction-triple-card.result{border-color:color-mix(in srgb, var(--color-primary) 56%, var(--color-border));box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 10%, transparent)}.fraction-three-way-equation.two-values .fraction-triple-card,.fraction-three-way-equation.two-values .fraction-practice-answer{width:100%}.fraction-triple-card>header,.fraction-practice-answer>header{justify-content:space-between;align-items:baseline;gap:8px;min-width:0;display:flex}.fraction-triple-card>header strong,.fraction-practice-answer>header strong{color:var(--color-text)}.fraction-triple-card>header>span,.fraction-practice-answer>header>span{color:var(--color-primary);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:800;overflow:hidden}.fraction-card-original{justify-content:flex-end;align-items:center;gap:7px;display:inline-flex}.fraction-stacked-number{color:currentColor;vertical-align:middle;grid-template-rows:1fr 2px 1fr;place-items:center stretch;min-width:2.1em;font-size:.92em;font-style:normal;line-height:1;display:inline-grid}.fraction-stacked-number b{color:currentColor;min-width:0;font:inherit;text-align:center;font-weight:900;display:block}.fraction-stacked-number i{background:currentColor;border-radius:999px;width:100%;height:2px;display:block}.fraction-representation-lane{border-top:1px solid var(--color-border);grid-template-columns:minmax(170px,.24fr) minmax(0,1fr);align-items:center;gap:10px;min-width:0;padding-top:10px;display:grid}.fraction-representation-lane>div:first-child{gap:2px;display:grid}.fraction-representation-lane>div:first-child strong{color:var(--color-text);font-size:14px}.fraction-lane-value{align-items:center;gap:8px;display:flex}.fraction-lane-value .fraction-stacked-number{color:var(--fraction-lane-color);font-size:14px}.fraction-representation-lane>div:first-child span{color:var(--color-muted);font-size:11px}.fraction-representation-lane.merge{--fraction-lane-color:var(--color-secondary)}.fraction-representation-lane.source{--fraction-lane-color:var(--color-primary)}.fraction-representation-lane.decimal{--fraction-lane-color:#6f91eb}.fraction-compact-bars{grid-template-columns:repeat(var(--fraction-units), minmax(0, 1fr));gap:4px;min-width:0;display:grid}.fraction-compact-bar{grid-template-columns:repeat(var(--fraction-parts), minmax(0, 1fr));border:2px solid color-mix(in srgb, var(--color-text) 58%, var(--color-border));background:var(--color-surface);border-radius:6px;min-width:0;height:44px;display:grid;overflow:hidden}.fraction-compact-bar i{border-right:1.5px solid color-mix(in srgb, var(--color-text) 42%, var(--color-border));background:0 0;min-width:0}.fraction-compact-bar i:last-child{border-right:0}.fraction-compact-bar i.active{background:linear-gradient(135deg, #ffffff2e, transparent 46%), var(--fraction-lane-color)}.fraction-representation-lane.decimal .fraction-compact-bar i{border-right-color:color-mix(in srgb, var(--color-text) 32%, var(--color-border))}.fraction-compact-bar.dense i:nth-child(10n){border-right-width:2.5px;border-right-color:color-mix(in srgb, var(--color-text) 72%, var(--color-border))}.fraction-equation-symbol{border:1px solid color-mix(in srgb, var(--color-primary) 42%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 8%, var(--color-canvas));width:48px;height:34px;color:var(--color-primary);border-radius:999px;justify-self:center;place-items:center;display:grid}.fraction-equation-symbol svg{width:22px;height:22px}.fraction-practice-answer{align-content:center;justify-items:center;min-height:248px}.fraction-answer-fields{grid-template-rows:50px 3px 50px;gap:5px;width:min(180px,100%);display:grid}.fraction-answer-fields input{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-width:0;color:var(--color-text);text-align:center;font-size:20px;font-weight:900}.fraction-answer-fields i{background:var(--color-text);border-radius:999px;justify-self:center;width:80%;height:3px}.fraction-practice-answer p{min-height:38px;color:var(--color-muted);text-align:center;margin:0;font-size:12px}.fraction-practice-answer p.error{color:var(--color-danger)}.fraction-invalid-subtraction{color:var(--color-muted);text-align:center}.fraction-invalid-subtraction>svg{border:1px solid color-mix(in srgb, var(--color-primary) 44%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 10%, var(--color-canvas));width:44px;height:44px;color:var(--color-primary);border-radius:999px;padding:9px}.fraction-invalid-subtraction>strong{color:var(--color-text)}@media (max-width:760px){.fraction-unified-toolbar>div:not(.fraction-toolbar-actions){width:100%}.fraction-input-operator{margin-inline:auto}.fraction-toolbar-actions{width:100%;margin-left:0}.fraction-toolbar-actions button{flex:150px}.fraction-operation-switch{width:100%}.fraction-toolbar-actions .fraction-operation-switch button{min-width:0}.fraction-representation-lane{grid-template-columns:104px minmax(0,1fr)}.fraction-compact-bar{height:36px}}@media (prefers-reduced-motion:reduce){.fraction-boundaries i,.fraction-result-lane{transition:none}}.direction-game-frame{border:1px solid var(--color-border);border-radius:var(--radius-md);isolation:isolate;background:#62bdf3;width:100%;height:min(760px,100dvh - 92px);min-height:590px;position:relative;overflow:hidden;box-shadow:0 18px 50px #4f4ea147}.direction-game-frame>canvas{touch-action:none;outline:0;width:100%;height:100%;display:block}.direction-game-frame:fullscreen{border:0;border-radius:0;width:100vw;height:100vh;min-height:100vh}.direction-game-topbar{z-index:20;pointer-events:none;align-items:center;gap:8px;display:flex;position:absolute;top:14px;left:14px;right:14px}.direction-game-topbar>*{pointer-events:auto}.direction-game-topbar button,.direction-engine-badge,.direction-heading-readout{-webkit-backdrop-filter:blur(16px)saturate(1.3);backdrop-filter:blur(16px)saturate(1.3);color:#fff;background:linear-gradient(145deg,#5b49d0d6,#34bdbacc);border:2px solid #ffffffa3;border-radius:15px;min-height:42px;box-shadow:0 8px #3c378a38,0 14px 30px #36368033,inset 0 1px #ffffff61}.direction-game-topbar button{align-items:center;gap:7px;padding:9px 13px;display:inline-flex}.direction-game-topbar button:hover{background:linear-gradient(145deg,#7157e8f0,#37d5c2eb);border-color:#fff8a9;transform:translateY(-1px)}.direction-game-topbar button svg{width:17px;height:17px}.direction-engine-badge{color:#fff6a8;align-items:center;padding:8px 12px;font-size:12px;font-weight:900;display:inline-flex}.direction-heading-readout{grid-template-columns:auto auto auto auto;align-items:center;gap:7px;min-width:185px;margin-right:auto;padding:6px 12px;display:grid}.direction-heading-readout svg{color:#54e4ce;width:21px;height:21px;transform:rotate(var(--direction-heading));transition:transform var(--duration-normal) var(--ease-standard)}.direction-heading-readout span,.direction-heading-readout small{color:#ffffffc7;font-size:11px}.direction-heading-readout strong{color:#fff;font-size:19px}.direction-game-compass{z-index:18;pointer-events:none;align-items:center;gap:4px;display:flex;position:absolute;top:70px;left:50%;transform:translate(-50%)}.direction-game-compass span{color:#ffffffb8;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#5648b4ad;border:2px solid #ffffff94;border-radius:10px;place-items:center;width:36px;height:32px;font-size:12px;font-weight:900;display:grid;box-shadow:0 5px 14px #3f2f8e33}.direction-game-compass span.active{color:#fff;background:linear-gradient(145deg,#ff7eb5,#ffb85f);border-color:#fff8a9;box-shadow:0 0 24px #ffcd658a}.direction-treasure-task{z-index:21;color:#fff;-webkit-backdrop-filter:blur(16px)saturate(1.3);backdrop-filter:blur(16px)saturate(1.3);background:linear-gradient(145deg,#5840b8e6,#1f97b0d6);border:2px solid #ffffffb3;border-radius:18px;gap:8px;width:min(330px,100% - 28px);padding:13px 15px;display:grid;position:absolute;top:78px;left:14px;box-shadow:0 9px #392f832e,0 18px 34px #302f7733}.direction-treasure-task>span{align-items:center;gap:7px;display:flex}.direction-treasure-task>span svg{color:#fff5a5;width:19px}.direction-treasure-task>span b{font-size:13px}.direction-treasure-task>span small{color:#ffffffbf;margin-left:auto}.direction-treasure-task>strong{color:#fff7a5;align-items:center;gap:7px;font-size:17px;line-height:1.35;display:flex}.direction-treasure-task>strong svg{width:20px}.direction-treasure-task>small{color:#eefffcc7;font-size:11px;line-height:1.5}.direction-treasure-task>button{color:#482f78;background:linear-gradient(145deg,#ff8dad,#ffd563);border:1px solid #ffffffb8;border-radius:12px;min-height:36px;font-weight:900}.direction-treasure-task.collected{background:linear-gradient(145deg,#e56894f0,#ecac4ae6);border-color:#fff3a0}.direction-treasure-celebration{z-index:32;min-width:260px;animation:direction-treasure-pop .7s var(--ease-standard) both;pointer-events:none;color:#fff;text-align:center;filter:drop-shadow(0 8px 20px #4a2a7e59);place-items:center;gap:5px;display:grid;position:absolute;top:42%;left:50%;transform:translate(-50%,-50%)}.direction-treasure-celebration svg{color:#fff17a;width:54px;height:54px;animation:1.8s linear infinite direction-treasure-spin}.direction-treasure-celebration strong{paint-order:stroke;-webkit-text-stroke:5px #6a438ec7;font-size:clamp(30px,5vw,56px);line-height:1}.direction-treasure-celebration span{background:#4a318bc7;border-radius:999px;padding:7px 14px;font-weight:900}@keyframes direction-treasure-pop{0%{opacity:0;transform:translate(-50%,-42%)scale(.55)}65%{opacity:1;transform:translate(-50%,-50%)scale(1.08)}to{opacity:1;transform:translate(-50%,-50%)scale(1)}}@keyframes direction-treasure-spin{to{transform:rotate(360deg)}}.direction-game-inspector{z-index:20;-webkit-backdrop-filter:blur(16px)saturate(1.25);backdrop-filter:blur(16px)saturate(1.25);color:#effffc;background:linear-gradient(155deg,#4f43abd9,#308bafc2);border:2px solid #ffffff9e;border-radius:18px;gap:8px;width:min(260px,100% - 28px);padding:14px;display:grid;position:absolute;top:78px;right:14px;box-shadow:0 9px #392f832e,0 18px 34px #302f7733,inset 0 1px #ffffff4d}.direction-game-inspector>strong{color:#fff;font-size:19px}.direction-game-inspector>small{color:#e8fdf9a3}.direction-game-inspector>div{grid-template-columns:1fr 1fr;gap:6px;display:grid}.direction-game-inspector button{color:#effffc;text-align:left;background:#ffffff1f;border:1px solid #ffffff5c;border-radius:11px;justify-items:start;gap:2px;min-width:0;min-height:48px;padding:7px 9px;display:grid}.direction-game-inspector button:hover:not(:disabled){background:#fff3;border-color:#fff5a5}.direction-game-inspector button b{color:#fff59a;font-size:12px}.direction-game-inspector button span{text-overflow:ellipsis;white-space:nowrap;width:100%;font-size:12px;overflow:hidden}.direction-game-minimap{z-index:20;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);color:#effffc;text-align:left;cursor:zoom-in;background:linear-gradient(155deg,#4d44abd1,#3099b3b8);border:2px solid #ffffff9e;border-radius:18px;width:178px;min-height:0;padding:9px;position:absolute;bottom:54px;left:14px;box-shadow:0 8px #362f842e,0 16px 32px #362f842e}.direction-minimap-heading{align-items:center;gap:8px;padding:1px 4px 6px;display:flex}.direction-minimap-heading>svg{color:#fff5a5;flex:none;width:22px;height:22px}.direction-minimap-heading>span{gap:1px;display:grid}.direction-minimap-heading b{color:#fff;font-size:12px}.direction-minimap-heading small{color:#e8fdf9b8;font-size:9px}.direction-minimap-heading>svg:last-child{color:#fff;width:17px;margin-left:auto}.direction-game-minimap>svg{width:100%;display:block}.minimap-ground{fill:#6fdaa7bd;stroke:#ffffff8f}.direction-game-minimap g{cursor:pointer}.direction-game-minimap circle{fill:#dbe9e5;stroke:#02161eb3;stroke-width:2px}.direction-game-minimap g.selected circle{fill:#54e4ce;stroke:#fff}.minimap-player path{fill:#ffd56d;stroke:#132a38;stroke-width:1.5px}.direction-game-minimap text{fill:#f0fffcbd;text-anchor:middle;pointer-events:none;font-size:8px;font-weight:900}.direction-game-minimap .minimap-landmark-label{fill:#fff;paint-order:stroke;stroke:#18274cd1;stroke-width:2px;font-size:5px}.direction-game-minimap .minimap-cardinal{fill:#fff;paint-order:stroke;stroke:#18274cad;stroke-width:3px;font-size:10px}.minimap-compass-rose circle{fill:#283970e6;stroke:#fff5a5;stroke-width:1.5px}.minimap-compass-rose path{fill:#ff796e;stroke:#fff;stroke-width:.8px}.minimap-compass-rose text{fill:#fff;font-size:6px}.direction-map-overlay{z-index:50;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#08142aa8;place-items:center;padding:clamp(12px,3vw,34px);display:grid;position:absolute;inset:0}.direction-map-overlay>section{color:#fff;background:linear-gradient(155deg,#4841a5f5,#298baaf2);border:3px solid #ffffffb8;border-radius:24px;gap:10px;width:min(900px,100%);max-height:100%;padding:clamp(12px,2vw,22px);display:grid;overflow:auto;box-shadow:0 28px 80px #070d2680}.direction-map-overlay header{justify-content:space-between;align-items:center;gap:12px;display:flex}.direction-map-overlay header>div{gap:3px;display:grid}.direction-map-overlay header strong{font-size:22px}.direction-map-overlay header small{color:#f0fffcb8}.direction-map-overlay header button{color:#fff;background:#ffffff1f;border:1px solid #ffffff80;border-radius:50%;place-items:center;width:40px;min-height:40px;padding:0;display:grid}.direction-map-overlay header button svg{width:20px}.direction-map-overlay svg{width:100%;min-height:0;max-height:min(64vh,610px)}.direction-map-overlay .minimap-ground{fill:#7bdaa4db}.direction-map-overlay g[role=button]{cursor:pointer}.direction-map-overlay circle{fill:#eaf8f3;stroke:#223657;stroke-width:1.4px}.direction-map-overlay g.selected circle{fill:#fff076;stroke:#fff}.direction-map-overlay text{fill:#fff;text-anchor:middle;paint-order:stroke;stroke:#1c2d4bdb;stroke-width:1.4px;pointer-events:none;font-size:4.8px;font-weight:900}.direction-map-overlay .minimap-cardinal{font-size:8px}.direction-map-overlay footer{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;display:flex}.direction-map-overlay footer span{background:#ffffff21;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:900}.direction-map-overlay footer small{color:#f0fffcb3;text-align:center;width:100%}.direction-game-help{z-index:18;pointer-events:none;justify-content:center;gap:18px;display:flex;position:absolute;bottom:14px;left:210px;right:14px}.direction-game-help span{color:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#5245acb3;border:2px solid #ffffff8a;border-radius:999px;padding:6px 11px;font-size:11px;box-shadow:0 5px 14px #382e8533}.direction-mobile-controls{z-index:22;grid-template:repeat(2,48px)/repeat(3,48px);gap:6px;display:none;position:absolute;bottom:62px;right:18px}.direction-mobile-controls button{color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);touch-action:none;background:linear-gradient(145deg,#775de5e6,#3ac7bedb);border:2px solid #ffffffad;border-radius:50%;place-items:center;min-width:0;min-height:0;display:grid;box-shadow:0 5px #41349547}.direction-mobile-controls button:first-child{grid-column:2}.direction-mobile-controls button:nth-child(2){grid-area:2/1}.direction-mobile-controls button:nth-child(3){grid-area:2/2}.direction-mobile-controls button:nth-child(4){grid-area:2/3}.direction-mobile-controls button:active{background:#16625be6;border-color:#54e4ce}.direction-world-label{color:#f3fffd;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);white-space:nowrap;background:#051620d1;border:1px solid #dafffa52;border-radius:9px;min-width:92px;padding:7px 10px;font-size:13px;font-weight:900}.direction-world-label.selected{background:#0d4846e6;border-color:#54e4ce;box-shadow:0 0 20px #54e4ce47}.direction-game-selected-babylon .direction-game-frame{background:#02080d;border:1px solid #2e7680;border-radius:2px;box-shadow:0 0 0 3px #07151d,0 24px 70px #00080e9e,inset 0 0 80px #1fcbca0f}.direction-game-selected-babylon .direction-game-loading{color:#8ee7e2;letter-spacing:.08em;background:radial-gradient(circle at 50% 45%,#12343b,#02080d 65%);border-radius:2px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.direction-game-selected-babylon .direction-game-frame:before{content:"";z-index:12;pointer-events:none;mix-blend-mode:screen;background:repeating-linear-gradient(0deg,#73eeeb05 0 1px,#0000 1px 4px);position:absolute;inset:0}.direction-game-selected-babylon .direction-game-frame:after{content:"";z-index:19;pointer-events:none;color:#70e1df6b;letter-spacing:.16em;font:700 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;position:absolute;bottom:8px;right:14px}.direction-game-selected-babylon .direction-game-topbar{clip-path:polygon(0 0,calc(100% - 15px) 0,100% 15px,100% 100%,14px 100%,0 calc(100% - 14px));background:linear-gradient(90deg,#04121bf5,#091f27d6 55%,#041018f5);border:1px solid #48bbc16b;gap:5px;padding:5px;top:10px;left:10px;right:10px;box-shadow:0 8px 24px #00070c80,inset 0 -1px #58dddc24}.direction-game-selected-babylon .direction-game-topbar button,.direction-game-selected-babylon .direction-engine-badge,.direction-game-selected-babylon .direction-heading-readout{color:#bdebea;clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);background:linear-gradient(#193741e6,#081820f5);border:1px solid #4dbec36b;border-radius:0;min-height:38px;box-shadow:inset 0 1px #a4fffb1a,inset 0 -2px #0aafb424}.direction-game-selected-babylon .direction-game-topbar button:hover{color:#ecffff;background:linear-gradient(#235c63f5,#09242cfa);border-color:#65e8e2;transform:none}.direction-game-selected-babylon .direction-engine-badge{color:#f1ad48;letter-spacing:.12em;text-transform:uppercase}.direction-game-selected-babylon .direction-heading-readout strong{color:azure;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.direction-game-selected-babylon .direction-game-compass{gap:1px;top:66px}.direction-game-selected-babylon .direction-game-compass span{width:42px;height:26px;box-shadow:none;color:#acdddfb3;clip-path:polygon(5px 0,100% 0,calc(100% - 5px) 100%,0 100%);background:#03131be6;border:1px solid #44b2b86b;border-radius:0}.direction-game-selected-babylon .direction-treasure-task,.direction-game-selected-babylon .direction-game-inspector,.direction-game-selected-babylon .direction-game-minimap{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,12px 100%,0 calc(100% - 12px));background:linear-gradient(145deg,#071c26f5,#041018eb);border:1px solid #40b9bf8f;border-radius:0;box-shadow:0 14px 34px #00080d75,inset 3px 0 #2acecc2e,inset 0 1px #8df4ef1a}.direction-game-selected-babylon .direction-treasure-task{top:73px}.direction-game-selected-babylon .direction-treasure-task>span{color:#8adbd9;letter-spacing:.08em;border-bottom:1px solid #45bcc147;padding-bottom:6px}.direction-game-selected-babylon .direction-treasure-task>button{color:#ffe1aa;clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);background:linear-gradient(#8c591f,#4c321c);border:1px solid #ca8735;border-radius:0}.direction-game-selected-babylon .direction-game-inspector{top:73px}.direction-game-selected-babylon .direction-game-inspector>strong{color:#d9ffff;text-transform:uppercase;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.direction-game-selected-babylon .direction-game-inspector button{color:#c8eeee;background:#09232bb8;border:1px solid #3b9aa05c;border-radius:0}.direction-game-selected-babylon .direction-game-inspector button:hover:not(:disabled){background:#114248d1;border-color:#52d9d4}.direction-game-selected-babylon .direction-game-minimap{padding:7px;bottom:44px}.direction-game-selected-babylon .direction-game-help{gap:4px;bottom:12px}.direction-game-selected-babylon .direction-game-help span{color:#bbe1e2c2;box-shadow:none;background:#031219d6;border:1px solid #41a8ae57;border-radius:0;padding:5px 9px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.direction-game-selected-babylon .direction-treasure-celebration{color:#dffffd;filter:drop-shadow(0 0 26px #38e5db66)}.direction-game-selected-babylon .direction-treasure-celebration strong{letter-spacing:.1em;-webkit-text-stroke:2px #051c23e6;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.direction-game-selected-babylon .direction-treasure-celebration span{background:#051e25e6;border:1px solid #4ddbd4;border-radius:0}.direction-game-selected-babylon .direction-map-overlay>section{clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,18px 100%,0 calc(100% - 18px));background:linear-gradient(145deg,#071923,#030c12);border:1px solid #4ac9c8;border-radius:0;box-shadow:0 0 60px #25cfca26}.direction-game-selected-babylon .direction-mobile-controls button{clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);background:linear-gradient(145deg,#14454cf5,#051922f5);border:1px solid #56d9d4;border-radius:2px;box-shadow:inset 0 0 14px #45e0d929}.direction-game-selected-babylon .direction-world-label{color:#c9eeee;clip-path:polygon(6px 0,100% 0,calc(100% - 6px) 100%,0 100%);background:#031118eb;border-radius:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.direction-game-selected-babylon{--direction-party-ink:#4a3f78;--direction-party-purple:#7865df;--direction-party-pink:#f37fb4;--direction-party-mint:#55d8cc;--direction-party-yellow:#ffc85b;--direction-party-panel:#fffcf6eb}.direction-game-selected-babylon .direction-game-frame{background:#8bd7f5;border-color:#8f7be7;box-shadow:0 0 0 3px #fff5d8,0 20px 54px #6751be40,inset 0 0 70px #fff3}.direction-game-selected-babylon .direction-game-frame:before{mix-blend-mode:soft-light;background:repeating-linear-gradient(0deg,#ffffff06 0 1px,#0000 1px 5px)}.direction-game-selected-babylon .direction-game-frame:after{color:#53418d7a}.direction-game-selected-babylon .direction-game-loading{color:var(--direction-party-ink);background:radial-gradient(circle at 50% 42%,#fff5ca,#9edff5 68%)}.direction-game-selected-babylon .direction-game-topbar{background:linear-gradient(90deg,#fffaeef5,#f4eefff0 55%,#e8fffaf0);border-color:#7865df80;box-shadow:0 8px 24px #5f4ba433,inset 0 -2px #f37fb429}.direction-game-selected-babylon .direction-game-topbar button,.direction-game-selected-babylon .direction-engine-badge,.direction-game-selected-babylon .direction-heading-readout{color:var(--direction-party-ink);background:linear-gradient(#fffdf7,#eee9ff);border-color:#7865df5c;box-shadow:inset 0 1px #fff,inset 0 -3px #7865df1a}.direction-game-selected-babylon .direction-game-topbar button:hover{border-color:var(--direction-party-pink);color:#573a75;background:linear-gradient(#fff4c7,#ffd8ea)}.direction-game-selected-babylon .direction-engine-badge{color:#d15f96}.direction-game-selected-babylon .direction-heading-readout svg{color:var(--direction-party-mint);filter:drop-shadow(0 2px 3px #3ca69d47)}.direction-game-selected-babylon .direction-heading-readout strong{color:var(--direction-party-purple)}.direction-game-selected-babylon .direction-heading-readout span,.direction-game-selected-babylon .direction-heading-readout small{color:#4a3f78b8}.direction-game-selected-babylon .direction-game-compass span{color:#4a3f78b8;background:#fffdf7e6;border-color:#7865df57}.direction-game-selected-babylon .direction-game-compass span.active{color:#fff;background:linear-gradient(#ff8fbd,#ffbd6b);border-color:#ff9cc7;box-shadow:0 5px 14px #e2639b47}.direction-game-selected-babylon .direction-treasure-task,.direction-game-selected-babylon .direction-game-inspector,.direction-game-selected-babylon .direction-game-minimap{color:var(--direction-party-ink);background:linear-gradient(145deg,#fffdf7f5,#f2ecfff0);border-color:#7865df73;box-shadow:0 12px 28px #5b48a12e,inset 3px 0 #f37fb43d,inset 0 1px #fff}.direction-game-selected-babylon .direction-treasure-task>span{color:#7463c6;border-bottom-color:#7865df2e}.direction-game-selected-babylon .direction-treasure-task>span svg,.direction-game-selected-babylon .direction-treasure-task>strong{color:#dc679c}.direction-game-selected-babylon .direction-treasure-task>small,.direction-game-selected-babylon .direction-game-inspector>small{color:#4a3f78ad}.direction-game-selected-babylon .direction-treasure-task>span small,.direction-game-selected-babylon .direction-minimap-heading b{color:var(--direction-party-ink)}.direction-game-selected-babylon .direction-minimap-heading small{color:#4a3f78a8}.direction-game-selected-babylon .direction-treasure-task>button{color:#563b74;background:linear-gradient(#ffd36d,#ff9fc9);border-color:#ee85b4}.direction-game-selected-babylon .direction-treasure-task.collected{background:linear-gradient(145deg,#fff6c2f7,#ffdaeaf5);border-color:#ffb94f}.direction-game-selected-babylon .direction-game-inspector>strong{color:var(--direction-party-purple)}.direction-game-selected-babylon .direction-game-inspector button{color:var(--direction-party-ink);background:#ffffffa3;border-color:#7865df3d}.direction-game-selected-babylon .direction-game-inspector button:hover:not(:disabled){border-color:var(--direction-party-pink);background:#fff0f7}.direction-game-selected-babylon .direction-game-inspector button b{color:#d7649c}.direction-game-selected-babylon .minimap-ground{fill:#8eddae;stroke:#7865df}.direction-game-selected-babylon .direction-game-minimap circle{fill:#fff3c7;stroke:#7865df}.direction-game-selected-babylon .direction-game-minimap g.selected circle{fill:#ff86b8;stroke:#fff}.direction-game-selected-babylon .minimap-player path{fill:#765fe8;stroke:#fff}.direction-game-selected-babylon .minimap-compass-rose circle{fill:#fff8dc;stroke:#f37fb4}.direction-game-selected-babylon .direction-minimap-heading>svg{color:#d969a0}.direction-game-selected-babylon .direction-game-help span{color:#4a3f78d6;background:#fffcf6e0;border-color:#7865df47;box-shadow:0 5px 12px #5b48a11f}.direction-game-selected-babylon .direction-treasure-celebration{color:#fff;filter:drop-shadow(0 7px 18px #8053ae4d);top:18%}.direction-game-selected-babylon .direction-treasure-celebration svg{color:#ffd05b}.direction-game-selected-babylon .direction-treasure-celebration span{background:#7865dfdb;border-color:#fff}.direction-game-selected-babylon .direction-map-overlay{background:#5b489752}.direction-game-selected-babylon .direction-map-overlay>section{color:var(--direction-party-ink);background:linear-gradient(145deg,#fffdf6,#eee8ff);border-color:#8c78e5;box-shadow:0 20px 60px #5a46a04d}.direction-game-selected-babylon .direction-map-overlay header small,.direction-game-selected-babylon .direction-map-overlay footer small{color:#4a3f78ad}.direction-game-selected-babylon .direction-map-overlay .minimap-ground{fill:#91dfae;stroke:#7865df}.direction-game-selected-babylon .direction-map-overlay circle{fill:#fff3c7;stroke:#7865df}.direction-game-selected-babylon .direction-map-overlay g.selected circle{fill:#ff82b5;stroke:#fff}.direction-game-selected-babylon .direction-mobile-controls button{background:linear-gradient(145deg,#8d79e7,#f080b4);border-color:#fff;box-shadow:0 5px #664fad33,inset 0 1px #ffffff59}.direction-game-selected-babylon .direction-world-label{color:var(--direction-party-ink);background:#fffcf4eb;border-color:#7865df5c}.direction-game-selected-babylon .direction-world-label.selected{background:#ffe2eff0;border-color:#f178ad;box-shadow:0 5px 18px #e1609b3d}.direction-game-selected-babylon .direction-game-frame:after{content:none}.direction-game-selected-babylon .direction-game-compass,.direction-game-selected-babylon .direction-treasure-task,.direction-game-selected-babylon .direction-game-inspector{top:14px}.direction-camera-controls{z-index:24;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffcf6e6;border:2px solid #ffffffbd;border-radius:16px;align-items:center;gap:5px;padding:6px;display:flex;position:absolute;bottom:54px;right:14px;box-shadow:0 10px 24px #5b48a12e}.direction-camera-controls button{color:#6755c7;background:linear-gradient(#fff,#eee9ff);border:1px solid #7865df47;border-radius:10px;place-items:center;width:34px;min-width:34px;min-height:34px;padding:0;display:grid}.direction-camera-controls button:hover{background:#fff0f7;border-color:#ef79ae}.direction-camera-controls button svg{width:17px;height:17px}.direction-camera-controls input{appearance:none;cursor:ew-resize;background:0 0;border:0;width:112px;height:22px;min-height:22px;padding:0}.direction-camera-controls input::-webkit-slider-runnable-track{background:linear-gradient(90deg,#ef79ae,#6755c7);border-radius:999px;width:100%;height:5px}.direction-camera-controls input::-webkit-slider-thumb{appearance:none;background:#ef79ae;border:2px solid #fff;border-radius:50%;width:17px;height:17px;margin-top:-6px;box-shadow:0 1px 5px #50378c4d}.direction-camera-controls input::-moz-range-track{background:linear-gradient(90deg,#ef79ae,#6755c7);border:0;border-radius:999px;width:100%;height:5px}.direction-camera-controls input::-moz-range-thumb{background:#ef79ae;border:2px solid #fff;border-radius:50%;width:17px;height:17px;box-shadow:0 1px 5px #50378c4d}@media (max-width:1020px){.direction-layout{grid-template-columns:1fr}.direction-info-card{grid-template-columns:auto minmax(230px,1fr);align-items:center}.direction-info-card>p{grid-column:1/-1}.direction-game-topbar{flex-wrap:wrap}.direction-engine-badge{display:none}.direction-heading-readout{order:4;width:100%;margin-right:0}.direction-game-compass{top:116px}.direction-game-inspector,.direction-treasure-task{top:158px}.direction-game-selected-babylon .direction-game-compass{top:12px}.direction-game-selected-babylon .direction-game-inspector,.direction-game-selected-babylon .direction-treasure-task{top:52px}}@media (max-width:680px){.direction-toolbar{grid-template-columns:1fr 1fr;display:grid}.direction-presets,.direction-toolbar>label{grid-column:1/-1}.direction-presets{grid-template-columns:repeat(3,1fr);display:grid}.direction-scene{min-height:340px}.direction-info-card{grid-template-columns:1fr}.direction-compass-card{width:160px;height:160px}.direction-engine-picker{grid-template-columns:1fr}.direction-engine-picker>button{min-height:210px}.direction-game-frame{border-radius:0;height:calc(100dvh - 82px);min-height:620px}.direction-game-topbar{grid-template-columns:1fr 1fr 1fr;display:grid;top:8px;left:8px;right:8px}.direction-game-topbar button{justify-content:center;min-width:0;padding-inline:7px;font-size:11px}.direction-game-topbar button svg{display:none}.direction-heading-readout{grid-area:2/1/auto/-1;min-width:0}.direction-game-compass{top:102px}.direction-treasure-task{width:min(210px,100% - 16px);padding:10px;top:144px;left:8px}.direction-treasure-task>strong{font-size:14px}.direction-treasure-task>small{display:none}.direction-game-inspector{width:200px;padding:10px;top:auto;bottom:178px;right:8px}.direction-game-inspector>strong{font-size:15px}.direction-game-minimap{width:148px;bottom:8px;left:8px}.direction-game-help{display:none}.direction-mobile-controls{display:grid}.direction-map-overlay{padding:8px}.direction-map-overlay>section{border-radius:16px;padding:10px}.direction-game-selected-babylon .direction-game-compass{top:8px}.direction-game-selected-babylon .direction-treasure-task{top:48px}.direction-game-selected-babylon .direction-game-inspector{top:auto}.direction-camera-controls{flex-direction:column;padding:5px;bottom:292px;right:8px}.direction-camera-controls input{writing-mode:vertical-lr;direction:rtl;width:22px;height:72px}}@media (prefers-reduced-motion:reduce){.direction-treasure-celebration,.direction-treasure-celebration svg{animation:none}}.relationship-strip{gap:var(--space-3);margin-top:var(--space-4);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.relationship-strip>div{gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-4);display:grid}.relationship-strip small{color:var(--color-muted)}.cube-slot-diagnostic{gap:var(--space-3);margin-top:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-3);display:grid}.cube-slot-diagnostic.valid{border-color:color-mix(in srgb, var(--color-primary) 58%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 6%, transparent)}.cube-slot-diagnostic.invalid{border-color:color-mix(in srgb, var(--color-danger) 62%, var(--color-border));background:color-mix(in srgb, var(--color-danger) 7%, transparent)}.cube-slot-heading{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.cube-slot-heading>div{align-items:center;gap:var(--space-2);display:flex}.cube-slot-heading svg{width:20px;color:var(--color-danger)}.cube-slot-heading>button svg{color:currentColor}.cube-slot-diagnostic.valid .cube-slot-heading svg{color:var(--color-primary)}.cube-slot-diagnostic.answer-hidden{background:color-mix(in srgb, var(--color-surface) 70%, transparent)}.cube-slot-diagnostic.answer-hidden .cube-slot-heading>div>svg{color:var(--color-muted)}.cube-slot-heading span{gap:2px;display:grid}.cube-slot-heading small{color:var(--color-muted)}.cube-slot-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;display:grid}.cube-slot-grid>div{border:1px dashed var(--color-border);border-radius:var(--radius-sm);place-items:center;gap:2px;min-width:0;min-height:68px;padding:6px 3px;display:grid}.cube-slot-grid>div svg{width:16px}.cube-slot-grid>div small{max-width:100%;color:var(--color-muted);text-overflow:ellipsis;white-space:nowrap;font-size:9px;overflow:hidden}.cube-slot-grid .filled{border-style:solid;border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 9%, transparent)}.cube-slot-grid .empty{border-color:var(--color-danger);color:var(--color-danger);background:repeating-linear-gradient(135deg, transparent 0 6px, color-mix(in srgb, var(--color-danger) 9%, transparent) 6px 12px)}.cube-slot-grid .overlap{border-style:solid;border-color:var(--color-secondary);color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 10%, transparent)}.lab-layout{gap:var(--space-4);grid-template-columns:minmax(300px,.62fr) minmax(520px,1.38fr);display:grid}.lab-control-card,.lab-visual-card{align-content:start;gap:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-canvas);padding:var(--space-4);display:grid}.lab-readout{gap:var(--space-3);display:grid}.lab-readout>div{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-3);gap:4px;display:grid}.lab-readout small{color:var(--color-muted);font-size:12px;font-weight:800}.lab-readout strong{font-size:20px}.concept-canvas{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:radial-gradient(circle at 50% 45%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 58%), var(--color-surface);width:100%;min-height:360px}.cube-wire{fill:none;stroke:color-mix(in srgb, var(--color-text) 54%, transparent);stroke-width:2px}.cube-wire.back{stroke-dasharray:7 7}.cube-face-faint{fill:color-mix(in srgb, var(--color-primary) 8%, transparent);stroke:color-mix(in srgb, var(--color-text) 44%, transparent);stroke-width:2px}.section-plane{fill:color-mix(in srgb, var(--color-primary) 38%, transparent);stroke:var(--color-primary);stroke-width:3px}.concept-point{fill:var(--color-secondary);stroke:var(--color-canvas);stroke-width:3px}.concept-point.moving{fill:var(--color-primary)}.concept-canvas text{fill:var(--color-text);font-size:15px;font-weight:800}.secant-line{stroke:var(--color-secondary);stroke-width:4px;stroke-linecap:round}.tangent-line{stroke:var(--color-primary);stroke-width:3px;stroke-dasharray:8 8;stroke-linecap:round}.circle-outline{fill:color-mix(in srgb, var(--color-primary) 5%, transparent);stroke:var(--color-primary);stroke-width:3px}.arc-highlight{fill:none;stroke:var(--color-secondary);stroke-width:7px;stroke-linecap:round}.construction-line{fill:none;stroke:color-mix(in srgb, var(--color-text) 72%, transparent);stroke-width:3px;stroke-linejoin:round}.directrix-line{stroke:var(--color-secondary);stroke-width:3px;stroke-dasharray:10 8}.probability-line{fill:none;stroke:var(--color-primary);stroke-width:3px}.target-line{stroke:var(--color-secondary);stroke-width:3px;stroke-dasharray:7 7}.histogram-bar{fill:color-mix(in srgb, var(--color-primary) 68%, transparent);stroke:var(--color-primary);stroke-width:1px}@media (min-width:681px) and (max-width:1400px){.tangram-command-bar{grid-template-columns:minmax(210px,.7fr) minmax(410px,1.3fr)}.tangram-appearance-group{border-top:1px solid var(--color-border);grid-column:1/-1}.tangram-measure-summary{flex-basis:100%;justify-content:flex-start}}@media (max-width:680px){.split-control-bar,.split-playback{grid-template-columns:1fr}.playback-step-pair{grid-row:1}.split-animation-stage{gap:var(--space-2);grid-template-columns:1fr;min-height:360px}.split-snapshot-strip{grid-template-columns:repeat(auto-fill,220px)}.primary-tool .split-snapshot-strip>button{min-height:100px}.split-snapshot-visual .split-zone{padding:4px}.arithmetic-expression-panel .panel-heading{flex-direction:column;align-items:stretch}.operation-family-tabs{width:100%}.multiplicative-heading-controls{justify-content:start}.multiplicative-heading-controls>label{flex:150px}.multiplicative-expression .arithmetic-start-card{width:112px}.multiplicative-expression .arithmetic-term{width:min(176px,100vw - 92px)}.arithmetic-equal-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.multiplicative-group-frame{min-height:112px;padding:var(--space-2)}.multiplicative-group-frame>div,.multiplicative-loose-objects{grid-template-columns:repeat(auto-fill,30px);gap:6px}.multiplicative-object,.multiplicative-object .object-glyph{width:30px;height:30px}.multiplicative-relation-card{grid-template-columns:1fr}.arithmetic-expression{align-items:end;gap:var(--space-2)}.arithmetic-start-card{width:112px}.arithmetic-term{width:min(202px,100vw - 92px)}.arithmetic-editor-item:has(.arithmetic-insert-step:is(:hover,:focus-visible):not(:disabled)){gap:var(--space-2);grid-template-columns:max-content minmax(0,min(176px,100vw - 92px))}.arithmetic-insert-preview{width:min(176px,100vw - 92px)}.arithmetic-equation-result{min-width:112px;margin-left:auto}.arithmetic-live-bar{gap:var(--space-3);grid-template-columns:1fr}.arithmetic-live-bar .arithmetic-playback{justify-content:start}.arithmetic-live-bar .arithmetic-playback>button{flex:136px}.arithmetic-live-bar .playback-step-pair{flex:192px}.arithmetic-vertical-toggle{flex:152px;justify-content:center}.arithmetic-object-stage,.arithmetic-object-stage.has-workbench{gap:var(--space-2);min-height:0;padding:var(--space-3);grid-template-rows:auto auto;grid-template-columns:1fr}.arithmetic-operation-pair,.arithmetic-operation-pair.has-operation{gap:var(--space-2);grid-template-columns:1fr}.operation-zone.current{min-height:310px}.operation-zone.operation{min-height:150px;padding:var(--space-2)}.operation-zone.current>.motion-object-columns{gap:var(--space-3);grid-auto-columns:minmax(112px,max-content)}.operation-zone.current>.motion-object-columns>section{padding:0}.motion-workbench{gap:var(--space-2);min-height:154px;padding:var(--space-3);grid-template-columns:1fr}.motion-workbench>header{grid-template-columns:minmax(0,1fr) auto;align-items:center}.motion-workbench .motion-object-columns{gap:var(--space-3);grid-template-columns:repeat(auto-fit,minmax(112px,max-content));min-height:92px}.arithmetic-representation-row.split{grid-template-columns:1fr}.vertical-arithmetic{min-height:184px}.vertical-math-grid{grid-template-columns:24px repeat(3,minmax(54px,1fr));width:min(320px,100%);padding-inline:0}.vertical-math-grid:after{left:24px;right:0}.motion-arithmetic-object.one.density-normal .object-glyph,.arithmetic-object-slot.one.density-normal{width:30px;height:30px}.place-column.one .motion-object-list.density-normal{grid-template-columns:repeat(auto-fill,30px)}.motion-arithmetic-object.ten.density-normal .place-bundle.ten{grid-template-rows:repeat(5,8px);grid-template-columns:repeat(2,8px);gap:1px;width:30px;height:60px}.motion-arithmetic-object.ten.density-normal .place-bundle.ten .object-glyph.compact{width:8px;height:8px}.arithmetic-object-slot.ten.density-normal{width:30px;height:60px}.place-column.ten .motion-object-list.density-normal,.motion-workbench .place-column.ten .motion-object-list{grid-template-columns:repeat(auto-fill,30px)}.app-shell{grid-template:"topbar"58px"content"minmax(0,1fr)/1fr;padding-bottom:66px;display:grid}.topbar{min-height:58px;padding:0 var(--space-4)}.brand>span:last-child,.user-chip span{display:none}.sidebar{z-index:40;border-right:0;border-top:1px solid var(--color-border);-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border-bottom:0;width:100%;height:66px;padding:0;display:block;position:fixed;inset:auto 0 0;overflow:visible}.mobile-bottom-nav{z-index:2;height:66px;padding:4px max(var(--space-2), env(safe-area-inset-left));background:color-mix(in srgb, var(--color-canvas) 94%, transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);grid-template-columns:repeat(3,minmax(0,1fr));display:grid;position:relative}.mobile-bottom-nav button{border-radius:var(--radius-sm);color:var(--color-muted);background:0 0;border:0;place-items:center;gap:2px;font-size:11px;font-weight:800;display:grid}.mobile-bottom-nav button.active{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 9%, transparent)}.mobile-bottom-nav svg{width:20px;height:20px}.sidebar-panel{z-index:1;background:var(--color-canvas);min-height:0;padding:var(--space-3);opacity:0;pointer-events:none;transition:transform var(--duration-normal) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);display:flex;position:fixed;inset:58px 0 66px;overflow:hidden auto;transform:translateY(105%)}.sidebar.mobile-open .sidebar-panel{opacity:1;pointer-events:auto;transform:translateY(0)}.app-shell.mobile-navigation-open>.content{display:none}.sidebar.mobile-open{z-index:auto;background:0 0;border:0;grid-area:content;width:auto;height:auto;position:static;overflow:visible}.sidebar.mobile-open .mobile-bottom-nav{z-index:50;position:fixed;bottom:0;left:0;right:0}.sidebar.mobile-open .sidebar-panel{opacity:1;min-height:calc(100vh - 124px);position:static;overflow:visible;transform:none}.mobile-menu-header{margin:calc(-1 * var(--space-3)) calc(-1 * var(--space-3)) var(--space-2);border-bottom:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 94%, transparent);padding:var(--space-3);justify-content:space-between;align-items:center;display:flex;position:static}.mobile-menu-header>div{gap:2px;display:grid}.mobile-menu-header strong{font-size:17px}.mobile-menu-header small{color:var(--color-muted);font-size:11px}.desktop-home-nav,.sidebar-switcher{display:none}.favorite-filter{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-height:42px;padding:0 var(--space-3)}.favorite-filter input{width:auto}.sidebar-label{display:none}.favorite,.feature-nav{display:grid}.curriculum-tree{gap:var(--space-1);width:100%;max-height:none;display:grid;overflow:visible}.curriculum-floating-tools{right:var(--space-3);width:auto;max-height:min(52vh,440px);bottom:78px;top:auto!important;left:var(--space-3)!important}.curriculum-unit-tools{padding-right:var(--space-2)}.nav-item{width:100%;min-width:0}.nav-item.active{box-shadow:inset 3px 0 var(--color-primary)}.content{padding:var(--space-2) var(--space-3) var(--space-4)}.overview>header{padding:var(--space-2) 0 var(--space-3)}.overview .eyebrow{margin:0 0 4px;font-size:10px}.overview h1{font-size:22px;line-height:1.15}.overview header>p{margin:var(--space-2) 0 0;-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:13px;line-height:1.35;display:-webkit-box;overflow:hidden}.overview-filter-bar{margin:0 0 var(--space-2);display:flex}.overview-filter-button{min-height:34px;font-size:13px}.overview-coming-soon{gap:var(--space-2);margin-top:var(--space-5);padding:var(--space-3) 0 0;grid-template-columns:26px minmax(0,1fr)}.overview-coming-soon-icon{width:26px;height:26px}.overview-coming-soon-detail>button{padding-left:0}.environment-badge{margin-left:var(--space-2);font-size:11px}.module-grid,.result-grid,.primary-tool-layout{grid-template-columns:1fr}.tool-workspace-card{min-height:320px}.tangram-overview-bar{grid-template-columns:minmax(0,1fr) auto;display:grid}.tangram-canvas-actions{grid-column:1/-1;width:100%;min-width:0;overflow-x:auto}.tangram-canvas-actions button{width:auto}.tangram-command-bar{grid-template-columns:1fr}.tangram-command-group{border-right:0;border-bottom:1px solid var(--color-border)}.tangram-command-group:last-of-type{border-bottom:0}.tangram-edit-status{grid-column:1}.tangram-create-group{grid-template-columns:minmax(0,1fr) auto}.tangram-selected-actions{grid-template-columns:repeat(4,minmax(0,1fr))}.tangram-regularize-bar,.tangram-measure-bar{align-items:stretch}.tangram-exact-edit-bar{grid-template-columns:repeat(2,minmax(0,1fr))}.tangram-exact-edit-bar>strong,.tangram-exact-edit-bar>small{grid-column:1/-1}.tangram-regularize-bar{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.tangram-regularize-bar>span{grid-column:1/-1}.tangram-measure-actions{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.tangram-measure-actions>span{grid-column:1/-1}.tangram-measure-bar>label{flex:1}.tangram-measure-bar select,.tangram-measure-bar input{width:100%}.tangram-measure-summary{flex-basis:100%;justify-content:flex-start;min-width:0}.tangram-selected-actions button{padding-inline:3px}.tangram-board svg{min-height:460px}.case-grid,.place-case-grid{grid-template-columns:repeat(auto-fit,minmax(96px,1fr))}.segmented.compact{grid-template-columns:1fr}.segmented.compact.clock-mode-tabs{grid-template-columns:repeat(4,minmax(0,1fr))}.time-tool-tabs{grid-template-columns:repeat(2,minmax(0,1fr))!important}.calendar-topbar{flex-direction:column;align-items:stretch}.calendar-presentation-tabs{width:100%}.calendar-selectors{grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;width:100%}.calendar-selectors .themed-select{width:auto}.calendar-view-tabs{flex-wrap:wrap;align-items:stretch}.calendar-view-tabs p{width:100%;margin:0}.year-calendar-grid{gap:var(--space-2);grid-template-columns:repeat(2,minmax(0,1fr))}.mini-month-card{min-height:155px!important;padding:var(--space-2)!important}.month-days-grid{min-height:350px}.month-day{min-height:58px!important;padding:6px!important}.month-day strong{font-size:15px}.month-day small{text-overflow:ellipsis;white-space:nowrap;max-width:100%;overflow:hidden}.month-weekdays span{padding:var(--space-2) 2px;font-size:11px}.digital-calendar-stage{min-height:410px;padding:var(--space-5) var(--space-3) var(--space-4)}.digital-wheel-picker{grid-template-columns:1.25fr 1fr 1fr}.calendar-wheel button{font-size:clamp(34px,11vw,54px)}.calendar-wheel-wrap:first-child button{font-size:clamp(27px,8vw,42px)}.calendar-wheel-unit{font-size:11px;right:5px}.digital-date-controls button{font-size:12px;min-height:48px!important;padding:0 var(--space-2)!important}.clock-pair{gap:var(--space-2);grid-template-columns:1fr}.clock-pair .clock-face{width:min(260px,100%)}.clock-moment,.clock-pair .clock-moment{gap:var(--space-2);grid-template-columns:minmax(126px,1fr) minmax(116px,.82fr)}.digital-clock-digits strong,.clock-pair .digital-clock-digits strong{font-size:clamp(27px,25cqi,52px)}.clock-period-badge{padding:2px}.clock-period-badge strong{padding:3px 7px;font-size:11px}.clock-question-face{width:min(260px,100%)}.clock-pair-arrow{width:min(180px,70%);min-width:0}.clock-pair-arrow i{width:2px;height:28px}.clock-pair-arrow i:after{inset:auto auto 0 50%;transform:translate(-50%)rotate(135deg)}.blind-stopwatch>header{flex-direction:column;align-items:start}.blind-stopwatch-stage{gap:var(--space-3);min-height:220px;padding:var(--space-3)}.blind-analog-mask{width:min(170px,100%)}.blind-digital-mask strong{font-size:clamp(28px,9vw,46px)}.stopwatch-mark-summary{flex-direction:column;align-items:start;gap:3px}.clock-time-ruler>header{flex-direction:column;align-items:start}.clock-time-ruler>header output{text-align:left;max-width:none}.clock-time-ruler-scroll{overflow-x:auto}.clock-time-ruler-track{min-width:768px}.clock-control-strip{grid-template-columns:1fr;align-items:stretch}.segmented.compact button{border-right:0;border-bottom:1px solid var(--color-border)}.segmented.compact button:last-child{border-bottom:0}.module-grid{gap:var(--space-2)}.module-card{min-height:70px;padding:0}.module-card-main{align-items:center;gap:var(--space-2);min-height:70px;padding:var(--space-2) var(--space-3);grid-template-columns:32px minmax(0,1fr);padding-right:90px}.module-icon{width:32px;height:32px}.module-card strong{margin-bottom:1px;font-size:14px}.module-card small{text-overflow:ellipsis;white-space:nowrap;font-size:11px;line-height:1.25;overflow:hidden}.module-card-actions{right:var(--space-2)}.order-list article{align-items:flex-start;gap:var(--space-3);flex-direction:column}.order-list article>div:last-child,.order-actions{text-align:left;place-items:start;width:100%}.pending-order-actions{justify-content:stretch;width:100%}.pending-order-actions .sync-order-button{flex:136px;justify-content:center}.orthographic-layout,.object-editor,.function-layout,.function-workspace,.net-layout,.relationship-strip,.lab-layout{grid-template-columns:1fr}.projection-panel{grid-template-rows:none;grid-template-columns:repeat(3,minmax(220px,1fr));overflow-x:auto}.studio-toolbar .toolbar-note,.net-toolbar .status-good,.net-toolbar .status-warn{width:100%;margin-left:0}.vector-editor,.vector-editor.scalar-editor{grid-template-columns:1fr}.graph-toolbar{flex-direction:column;align-items:stretch}.graph-toolbar output{margin-left:0}.function-visual-panel{position:static}.function-entry{grid-template-columns:8px minmax(0,1fr) 36px 36px}.function-entry .drag-hint{display:none}.function-graph{min-width:0}.fold-step-controls{grid-template-columns:1fr 1fr}.fold-step-controls label{grid-area:1/1/auto/-1}.fold-step-track{grid-template-columns:repeat(5,90px);overflow-x:auto}}.number-recognition-lab,.abacus-lab{gap:var(--space-5)}.number-lab-toolbar,.abacus-toolbar{align-items:end;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--color-border);background:var(--color-surface);grid-template-columns:minmax(0,1fr) auto;display:grid}.number-lab-toolbar{grid-template-columns:minmax(0,1fr) minmax(280px,auto)}.abacus-toolbar{grid-template-columns:minmax(260px,.8fr) minmax(260px,1fr) minmax(180px,.55fr) auto}.abacus-variant-control{gap:var(--space-2);display:grid}.abacus-variant-control>span{color:var(--color-muted);font-size:13px;font-weight:700}.abacus-variant-control .segmented{grid-template-columns:1fr 1fr}.number-mode-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.number-value-control,.abacus-toolbar label{gap:var(--space-2);display:grid}.number-value-control>span,.abacus-toolbar label>span{color:var(--color-muted);justify-content:space-between;align-items:center;font-size:13px;font-weight:700;display:flex}.number-value-control output{color:var(--color-primary);font-variant-numeric:tabular-nums}.number-lab-toolbar .icon-text-button{min-height:44px}.number-animation-actions{align-self:end;gap:var(--space-2);grid-template-columns:repeat(2,minmax(132px,1fr));width:100%;display:grid}.number-animation-actions button{white-space:nowrap;justify-content:center;align-items:center;gap:7px;min-height:44px;display:inline-flex}.number-unified-stage{gap:var(--space-3);grid-template-columns:minmax(0,1fr);align-items:stretch;display:grid}.packing-controls{align-items:end;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--color-border);background:var(--color-surface);grid-template-columns:minmax(440px,1fr) minmax(220px,.6fr) auto;display:grid}.packing-level-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.packing-progress{gap:var(--space-2);display:grid}.packing-progress>span{color:var(--color-muted);justify-content:space-between;font-size:13px;font-weight:700;display:flex}.packing-progress output{color:var(--color-primary)}.packing-actions{flex-wrap:nowrap}.packing-actions button{white-space:nowrap;min-height:44px}.number-representation-stage{border:1px solid var(--color-border);background:var(--color-canvas);min-height:470px;position:relative;overflow:hidden}.base-ten-scene{touch-action:none;width:100%;height:clamp(470px,58vh,680px);position:relative}.base-ten-scene canvas{width:100%;height:100%;display:block}.number-camera-reset{z-index:3;top:var(--space-3);right:var(--space-3);white-space:nowrap;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);align-items:center;gap:6px;display:inline-flex;position:absolute;width:auto!important;min-height:38px!important}.number-empty-state{color:var(--color-muted);pointer-events:none;place-items:center;font-size:16px;display:grid;position:absolute;inset:0}.scene-gesture-hint{z-index:2;right:var(--space-3);bottom:var(--space-3);border:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 88%, transparent);color:var(--color-muted);pointer-events:none;padding:6px 9px;font-size:12px;position:absolute}.number-place-summary{gap:var(--space-2);grid-template-columns:repeat(9,minmax(106px,1fr));padding-bottom:2px;display:grid;overflow-x:auto}.number-place-summary>div{gap:2px var(--space-3);min-height:76px;padding:var(--space-3);border:1px solid var(--color-border);background:var(--color-surface);grid-template-columns:1fr auto;display:grid}.number-place-summary>div.active{border-color:color-mix(in srgb, var(--color-primary) 70%, var(--color-border));background:color-mix(in srgb, var(--color-primary) 8%, var(--color-surface))}.number-place-summary span,.number-place-summary small{color:var(--color-muted)}.number-place-summary strong{color:var(--color-primary);grid-row:span 2;font-size:34px;line-height:1}.number-place-summary small{font-size:12px}.place-counter-panel{min-width:0;min-height:390px;padding:var(--space-4);border:1px solid var(--color-border);background:var(--color-canvas);grid-template-rows:auto minmax(0,1fr);align-items:center;display:grid}.place-counter-readout{align-content:center;gap:var(--space-1);min-height:92px;padding:0 0 var(--space-3);border-bottom:1px solid var(--color-border);display:grid}.place-counter-readout span,.place-counter-readout small{color:var(--color-muted)}.place-counter-readout strong{color:var(--color-primary);font-variant-numeric:tabular-nums;font-size:clamp(30px,3vw,48px)}.place-counter{width:100%;max-height:430px;overflow:visible}.counter-rod{stroke:color-mix(in srgb, var(--color-muted) 70%, transparent);stroke-width:4px}.counter-bead{stroke:color-mix(in srgb, var(--color-primary) 74%, white);stroke-width:2px;filter:drop-shadow(0 5px 5px #0000003d)}.counter-place-box{fill:var(--color-surface);stroke:var(--color-border);stroke-width:2px}.counter-place-label,.counter-digit{fill:var(--color-text);text-anchor:middle;font-weight:800}.counter-place-label{font-size:18px}.counter-digit{fill:var(--color-primary);font-size:28px}.abacus-toolbar output{min-height:72px;padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);background:var(--color-canvas);align-content:center;display:grid}.abacus-toolbar output small{color:var(--color-muted)}.abacus-toolbar output strong{color:var(--color-primary);font-variant-numeric:tabular-nums;font-size:29px}.abacus-toolbar .inline-actions{justify-content:end}.abacus-stage{gap:var(--space-3);display:grid}.abacus-frame{border:16px solid color-mix(in srgb, var(--color-text) 45%, var(--color-canvas));background:linear-gradient(145deg, color-mix(in srgb, var(--color-surface) 82%, white), var(--color-canvas));perspective:900px;width:100%;min-width:0;height:500px;position:relative;overflow:hidden;box-shadow:inset 0 0 0 2px #ffffff38,inset 0 18px 32px #ffffff0d,inset 0 -24px 44px #00000059,0 14px 30px #00000038}.abacus-inner-shadow{pointer-events:none;position:absolute;inset:0;box-shadow:inset 0 0 34px #00000061}.abacus-beam{z-index:4;background:linear-gradient(180deg, color-mix(in srgb, var(--color-text) 54%, white), color-mix(in srgb, var(--color-text) 52%, black));height:20px;position:absolute;top:139px;left:0;right:0;box-shadow:0 4px 8px #00000073,inset 0 1px #ffffff38}.abacus-frame.two-five{height:550px}.abacus-frame.two-five .abacus-beam{top:171px}.abacus-columns{z-index:2;grid-template-columns:repeat(7,minmax(0,1fr));display:grid;position:absolute;inset:0 18px}.abacus-column{border-right:1px solid color-mix(in srgb, var(--color-border) 48%, transparent);min-width:0;height:100%;position:relative}.abacus-column:last-child{border-right:0}.abacus-rod{background:linear-gradient(90deg,#56636c,#d8e2e5 45%,#66737a);width:6px;position:absolute;top:15px;bottom:70px;left:50%;transform:translate(-50%);box-shadow:1px 0 3px #0000007a}.abacus-bead{z-index:5;cursor:pointer;width:76%;height:36px;margin:0;position:absolute;left:12%;overflow:hidden;transform:rotateX(-4deg);background:linear-gradient(#343a3d 0%,#1b2022 28%,#090b0c 64%,#202527 100%)!important;border:1px solid #080a0b!important;border-radius:50%/30%!important;min-height:0!important;padding:0!important;box-shadow:inset 0 3px 2px #fff3,inset 0 -3px 4px #0000009e,0 5px 9px #00000061!important}.abacus-bead.upper{background:linear-gradient(#383f42 0%,#1d2224 28%,#090b0c 64%,#23292b 100%)!important}.abacus-bead:before{content:none}.abacus-bead span{pointer-events:none;background:linear-gradient(90deg,#0000,#ffffff4d,#0000);border:0;border-radius:999px;height:2px;position:absolute;top:6px;left:25%;right:25%}.abacus-bead:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.abacus-place-label,.abacus-place-digit{text-align:center;pointer-events:none;position:absolute;left:0;right:0}.abacus-place-label{color:var(--color-muted);font-size:13px;font-weight:700;bottom:35px}.abacus-place-digit{color:var(--color-primary);font-variant-numeric:tabular-nums;font-size:24px;bottom:4px}.abacus-legend{align-items:center;gap:var(--space-4);padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-muted);flex-wrap:wrap;display:flex}.abacus-legend span{align-items:center;gap:var(--space-2);display:inline-flex}.abacus-legend i{background:linear-gradient(#555b5e,#090b0c 65%,#24292b);border-radius:50%/28%;width:22px;height:12px;box-shadow:inset 0 2px #ffffff3d}.abacus-legend i.upper{background:linear-gradient(#555b5e,#090b0c 65%,#24292b)}.abacus-legend strong{color:var(--color-text);margin-left:auto}@media (max-width:900px){.number-lab-toolbar,.packing-controls,.abacus-toolbar{grid-template-columns:1fr;align-items:stretch}.number-lab-toolbar .icon-text-button,.packing-actions,.abacus-toolbar .inline-actions{justify-content:stretch;width:100%}.packing-actions button,.abacus-toolbar .inline-actions button{flex:1;justify-content:center}.number-unified-stage{grid-template-columns:1fr}.number-animation-actions{grid-template-columns:1fr 1fr}.place-counter-panel{min-height:360px;padding:var(--space-3)}}@media (max-width:620px){.number-animation-actions{grid-template-columns:1fr}.number-representation-stage,.place-counter-panel{min-height:360px}.base-ten-scene{height:430px}.number-place-summary{grid-template-columns:repeat(3,minmax(0,1fr))}.place-counter{min-width:0}.counter-place-label{font-size:15px}.abacus-frame{border-width:10px;height:480px}.abacus-frame.two-five{height:530px}.abacus-columns{left:4px;right:4px}.abacus-bead{width:80%;left:10%}.abacus-place-label{font-size:10px}.abacus-place-digit{font-size:19px}.abacus-legend strong{width:100%;margin-left:0}}.calculator-lab{--calculator-key-height:54px;--calculator-key-gap:9px;--calculator-key-radius:9px;--calculator-key-font:18px;--calculator-power-height:42px;--calculator-memory-height:42px;--calculator-digit-font-max:68px;width:min(1180px,100%)}.classroom-calculator-shell{align-items:center;gap:clamp(var(--space-4), 4vw, var(--space-7));grid-template-columns:minmax(260px,.8fr) minmax(420px,1fr);display:grid}.calculator-teacher-display{gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-primary) 7%, var(--color-canvas));min-height:410px;max-height:590px;padding:var(--space-4);grid-template-rows:auto minmax(0,1fr) auto;display:grid}.calculator-teacher-display small,.calculator-teacher-display span{color:var(--color-muted)}.calculator-history-heading{justify-content:space-between;align-items:end;gap:var(--space-3);border-bottom:1px solid var(--color-border);padding-bottom:var(--space-3);display:flex}.calculator-history-heading>div{gap:3px;display:grid}.calculator-history-heading strong{color:var(--color-primary);font-variant-numeric:tabular-nums;font-size:22px}.calculator-history-list{scrollbar-width:thin;align-content:start;gap:7px;margin:0;padding:0 3px 0 0;list-style:none;display:grid;overflow-y:auto}.calculator-history-list li{align-items:center;gap:var(--space-2);border:1px solid color-mix(in srgb, var(--color-border) 82%, transparent);border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-canvas) 86%, transparent);grid-template-columns:30px minmax(0,1fr);min-height:42px;padding:6px 10px;display:grid}.calculator-history-list li>span{background:color-mix(in srgb, var(--color-primary) 15%, transparent);width:24px;height:24px;color:var(--color-primary);border-radius:999px;place-items:center;font-size:12px;font-weight:900;display:grid}.calculator-history-list li>strong{overflow-wrap:anywhere;min-width:0;color:var(--color-text);font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px}.calculator-history-empty{color:var(--color-muted);text-align:center;align-self:center;margin:0;line-height:1.7}.calculator-memory-summary{border-top:1px solid var(--color-border);padding-top:var(--space-3);font-variant-numeric:tabular-nums;font-size:12px}.calculator-device{border:6px solid color-mix(in srgb, var(--color-text) 44%, var(--color-border));background:linear-gradient(150deg, color-mix(in srgb, var(--color-surface) 82%, white), var(--color-canvas));width:min(520px,100%);padding:var(--space-4);border-radius:26px;justify-self:center;box-shadow:0 22px 50px #00000047,inset 0 1px #ffffff3d}.calculator-screen{border:8px solid color-mix(in srgb, var(--color-text) 38%, var(--color-border));border-radius:var(--radius-md);color:#24362f;min-height:126px;padding:var(--space-3) var(--space-4);background:#c8d9c3;align-content:center;justify-items:end;display:grid;position:relative;overflow:hidden;box-shadow:inset 0 3px 8px #14282238}.calculator-screen small{text-align:right;text-overflow:ellipsis;white-space:nowrap;width:100%;font-size:12px;font-weight:800;overflow:hidden}.calculator-screen{container-type:inline-size}.calculator-screen output{max-width:100%;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(18px, calc(140cqw / var(--calculator-digits,6)), var(--calculator-digit-font-max));letter-spacing:-.08em;white-space:nowrap;font-weight:700;line-height:1;overflow:hidden}.calculator-screen i{font-size:13px;font-style:normal;font-weight:900;position:absolute;top:12px;left:14px}.calculator-device.powered-off .calculator-screen{background:#869487}.calculator-keypad{grid-template-columns:repeat(6,minmax(0,1fr));grid-template-rows:var(--calculator-power-height) var(--calculator-memory-height) repeat(4, var(--calculator-key-height));gap:var(--calculator-key-gap);margin-top:var(--space-4);grid-template-areas:". . . . .off""mu mc mr mminus mplus gt""back n7 n8 n9 percent sqrt""ac n4 n5 n6 multiply divide""ce n1 n2 n3 plus minus""on n0 doublezero decimal plus equals";display:grid}.calculator-keypad button{min-width:0;height:100%;min-height:0;box-shadow:0 3px 0 color-mix(in srgb, var(--color-text) 24%, transparent);font-size:var(--calculator-key-font);white-space:nowrap;border-color:color-mix(in srgb, var(--color-text) 40%, var(--color-border))!important;border-radius:var(--calculator-key-radius)!important;background:linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 70%, white), var(--color-surface))!important;padding:0 var(--space-1)!important}.calculator-keypad button:active{box-shadow:0 1px 0 color-mix(in srgb, var(--color-text) 20%, transparent);transform:translateY(2px)}.calculator-keypad .operator{color:var(--color-primary)}.calculator-keypad .clear{color:#fff;background:var(--color-status-error)!important}.calculator-keypad .power{color:#061611;background:var(--color-primary)!important}.calculator-keypad .equals{color:#231b05;background:var(--color-secondary)!important}.calculator-keypad .last-pressed{outline:2px solid var(--color-primary);outline-offset:2px}.calculator-keypad button:disabled{opacity:.45}.calculator-key-help{align-items:baseline;gap:var(--space-2);margin-top:var(--space-4);min-height:3lh;color:var(--color-muted);font-size:12px;line-height:1.5;display:flex}.calculator-key-help strong{color:var(--color-primary);flex-shrink:0}@media (max-width:820px){.classroom-calculator-shell{grid-template-columns:1fr}.calculator-teacher-display{min-height:260px;max-height:390px}}@media (max-width:520px){.calculator-device{padding:var(--space-3)}.calculator-lab{--calculator-key-gap:6px;--calculator-key-height:46px;--calculator-key-font:15px}}.permutation-lab-shell{gap:var(--space-4);display:grid}.permutation-control-bar{gap:var(--space-3);padding:var(--space-4);border:1px solid var(--color-border);background:var(--color-surface);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.permutation-control-bar>label{gap:var(--space-2);min-width:0;display:grid}.permutation-control-bar>label>span,.permutation-custom-labels>strong{color:var(--color-muted);font-size:13px;font-weight:750}.permutation-custom-labels{align-items:center;gap:var(--space-2);padding-top:var(--space-1);grid-column:1/-1;display:flex}.permutation-custom-labels label{flex:0 132px;min-width:78px}.permutation-custom-labels input{width:100%;min-width:0}.permutation-custom-labels small{color:var(--color-muted)}.permutation-playback-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.permutation-playback-actions button{white-space:nowrap}.permutation-playback-actions button:first-child{border-color:var(--color-primary)!important;background:var(--color-primary)!important;color:var(--color-canvas)!important}.permutation-progress{color:var(--color-text);text-align:right;justify-items:end;gap:2px;display:grid}.permutation-progress small{color:var(--color-primary)}.permutation-pointer-stage{gap:var(--space-4);padding:var(--space-4);border:1px solid var(--color-border);background:radial-gradient(circle at 78% 18%, color-mix(in srgb, var(--color-primary) 9%, transparent), transparent 36%), var(--color-canvas);grid-template-columns:minmax(190px,.42fr) minmax(520px,1.58fr);display:grid}.permutation-pointer-copy{align-content:center;gap:var(--space-3);min-height:210px;display:grid}.permutation-pointer-copy>div{gap:var(--space-1);display:grid}.permutation-pointer-copy strong{color:var(--color-muted);font-size:13px}.permutation-pointer-copy span{color:var(--color-primary);letter-spacing:.08em;font-size:clamp(42px,5vw,68px);font-weight:850}.permutation-pointer-copy p{color:var(--color-muted);margin:0;line-height:1.7}.permutation-pointer-board{gap:var(--space-2);align-content:center;min-width:0;display:grid}.permutation-pointer-lane,.permutation-candidate-row{align-items:center;gap:var(--space-2);grid-template-columns:54px minmax(0,1fr);display:grid}.permutation-pointer-lane>strong,.permutation-candidate-row>strong{color:var(--color-muted);text-align:center;font-size:12px}.permutation-pointer-track,.permutation-candidates{grid-template-columns:52px repeat(var(--candidate-count), minmax(64px, 1fr));gap:var(--space-2);display:grid}.permutation-pointer-track{border-bottom:1px solid color-mix(in srgb, var(--color-border) 76%, transparent);align-items:end;min-height:46px;position:relative}.permutation-pointer-marker{width:48px;color:var(--color-primary);align-content:end;justify-self:center;justify-items:center;display:grid}.permutation-pointer-marker.at-origin{opacity:.56}.permutation-pointer-marker b{background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas));border:1px solid;border-radius:999px;place-items:center;width:36px;height:26px;font-size:12px;display:grid}.permutation-pointer-marker i{background:currentColor;width:2px;height:15px}.permutation-pointer-marker i:after{content:"";border-bottom:2px solid;border-right:2px solid;width:8px;height:8px;display:block;transform:translate(-3px,6px)rotate(45deg)}.permutation-pointer-lane.pointer-2 .permutation-pointer-marker{color:var(--color-warning)}.permutation-pointer-lane.pointer-3 .permutation-pointer-marker{color:var(--color-danger)}.permutation-candidates>div{padding:var(--space-2);border:1px solid var(--color-border);background:var(--color-surface);justify-items:center;gap:2px;display:grid}.permutation-candidates>.permutation-pointer-origin{padding-inline:var(--space-1);background:color-mix(in srgb, var(--color-muted) 7%, var(--color-canvas));border-style:dashed}.permutation-candidates>.permutation-pointer-origin span{width:32px;height:32px;color:var(--color-muted);background:0 0;font-size:14px}.permutation-candidates span{background:color-mix(in srgb, var(--color-primary) 10%, var(--color-canvas));width:54px;max-width:100%;height:46px;color:var(--color-text);text-overflow:ellipsis;white-space:nowrap;border-radius:50%;place-items:center;padding-inline:4px;font-size:20px;font-weight:850;display:grid;overflow:hidden}.permutation-candidates small{color:var(--color-muted);font-size:11px}.permutation-candidates>div.occupied{border-color:color-mix(in srgb, var(--color-primary) 68%, var(--color-border))}.permutation-candidates>div.occupied span{background:color-mix(in srgb, var(--color-primary) 22%, var(--color-surface));color:var(--color-primary)}.permutation-tree-section{border:1px solid var(--color-border);background:var(--color-canvas);min-width:0;max-width:100%;overflow:hidden}.permutation-tree-section>header{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border);grid-template-columns:minmax(180px,1fr) auto minmax(220px,.9fr) auto;display:grid}.permutation-tree-title{gap:2px;display:grid}.permutation-tree-section>header small{color:var(--color-muted)}.permutation-tree-section>header>span{color:var(--color-primary);flex:none;font-weight:750}.permutation-tree-viewport{min-width:0;display:grid}.permutation-tree-zoom{margin:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface);justify-self:end;align-items:center;gap:4px;padding:4px;display:flex}.permutation-tree-zoom button{min-width:34px;padding-inline:var(--space-2)}.permutation-tree-zoom span{min-width:46px;color:var(--color-muted);text-align:center;font-size:12px;font-weight:750}.permutation-tree-scroll{overscroll-behavior:contain;max-height:min(72vh,720px);overflow:auto}.permutation-tree{transform-origin:0 0;min-width:0;height:auto;transition:width var(--duration-normal) var(--ease-standard);display:block}.permutation-tree path{fill:none;stroke:color-mix(in srgb, var(--color-border) 88%, var(--color-muted));stroke-width:1.5px}.permutation-tree path.active{stroke:var(--color-primary);stroke-width:2.5px}.permutation-tree path.ephemeral{stroke-dasharray:6 5}.permutation-tree .combination-tone-primary{--combination-color:var(--color-primary)}.permutation-tree .combination-tone-secondary{--combination-color:var(--color-secondary)}.permutation-tree .combination-link path{stroke:var(--combination-color);stroke-width:1.5px;opacity:.65}.permutation-tree .combination-link.selected path{stroke-width:3px;opacity:1}.permutation-tree .combination-link.dimmed path{opacity:.12}.permutation-tree .tree-combination{cursor:pointer;outline:none}.permutation-tree .tree-combination.dimmed{opacity:.5}.permutation-tree .tree-combination.selected rect,.permutation-tree .tree-combination:hover rect,.permutation-tree .tree-combination:focus-visible rect{stroke-width:3px;fill:color-mix(in srgb, var(--combination-color) 28%, var(--color-surface))}.permutation-tree .tree-combination:focus-visible rect{stroke-dasharray:5 3}.permutation-tree text{dominant-baseline:middle;text-anchor:middle;fill:var(--color-text);font-size:13px;font-weight:700}.permutation-tree .tree-level-label{fill:var(--color-muted);text-anchor:start;font-size:12px;font-weight:650}.permutation-tree .tree-root circle,.permutation-tree .tree-node rect{fill:var(--color-surface);stroke:var(--color-border);stroke-width:1.5px}.permutation-tree .tree-node.active rect{fill:color-mix(in srgb, var(--color-primary) 16%, var(--color-surface));stroke:var(--color-primary);stroke-width:2.5px}.permutation-tree .tree-node.ephemeral rect{stroke-dasharray:5 4}.permutation-tree .tree-result rect{fill:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));stroke:color-mix(in srgb, var(--color-primary) 54%, var(--color-border))}.permutation-tree .tree-result text{fill:var(--color-primary)}.permutation-tree .tree-combination rect{fill:color-mix(in srgb, var(--combination-color) 14%, var(--color-surface));stroke:var(--combination-color)}.permutation-tree .tree-empty{fill:var(--color-muted);font-size:14px;font-weight:600}.admin-shell{background:var(--color-canvas);min-height:100vh}.admin-access-shell{background:radial-gradient(circle at 50% 25%, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 34%), var(--color-canvas);min-height:100vh;padding:var(--space-5);place-items:center;display:grid}.admin-access-card{justify-items:center;gap:var(--space-5);border:1px solid var(--color-border);border-radius:calc(var(--radius-md) * 2);background:color-mix(in srgb, var(--color-surface) 96%, transparent);width:min(560px,100%);box-shadow:var(--shadow-lg);text-align:center;padding:clamp(28px,6vw,48px);display:grid}.admin-access-icon{border:1px solid color-mix(in srgb, var(--color-secondary) 52%, var(--color-border));width:66px;height:66px;color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 10%, var(--color-surface));border-radius:22px;place-items:center;display:grid}.admin-access-icon svg{width:30px;height:30px}.admin-access-copy{gap:var(--space-3);display:grid}.admin-access-copy small{color:var(--color-primary);letter-spacing:.08em;font-weight:900}.admin-access-copy h1,.admin-access-copy p{margin:0}.admin-access-copy h1{font-size:clamp(28px,5vw,40px)}.admin-access-copy p{color:var(--color-muted);line-height:1.75}.admin-current-account{align-items:center;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-primary) 7%, var(--color-canvas));width:100%;padding:var(--space-4);text-align:left;grid-template-columns:42px minmax(0,1fr);display:grid}.admin-current-account>svg{width:30px;height:30px;color:var(--color-primary)}.admin-current-account>div{gap:3px;min-width:0;display:grid}.admin-current-account span{color:var(--color-muted);font-size:12px}.admin-current-account strong{font-size:16px}.admin-current-account code{overflow-wrap:anywhere;color:var(--color-secondary);font:800 15px/1.5 var(--font-sans)}.admin-access-home{justify-content:center;align-items:center;gap:var(--space-2);border:1px solid var(--color-primary);border-radius:var(--radius-sm);color:#03120f;background:var(--color-primary);min-height:44px;padding:0 var(--space-5);font-weight:900;text-decoration:none;display:inline-flex}.admin-access-home svg{width:17px;height:17px}.admin-topbar{grid-area:auto;padding-inline:clamp(18px,4vw,64px)}.admin-topbar .brand{color:var(--color-text);text-decoration:none}.admin-topbar .brand-mark svg{width:18px;height:18px}.admin-topbar .environment-badge{align-items:center;gap:6px;display:inline-flex}.admin-topbar .environment-badge svg{width:15px;height:15px}.admin-content{gap:var(--space-5);width:min(1440px,100% - clamp(32px,8vw,128px));margin:0 auto;padding:clamp(28px,5vw,64px) 0;display:grid}.admin-heading{justify-content:space-between;align-items:end;gap:var(--space-5);display:flex}.admin-heading>div:first-child{gap:var(--space-2);display:grid}.admin-heading h1,.admin-heading p{margin:0}.admin-heading h1{font-size:clamp(30px,4vw,46px)}.admin-heading>div:first-child>p:last-child{color:var(--color-muted)}.admin-user-count{align-items:center;gap:2px var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);min-width:132px;padding:var(--space-3) var(--space-4);grid-template-columns:auto auto;display:grid}.admin-user-count svg{width:20px;height:20px;color:var(--color-primary);grid-row:1/3}.admin-user-count strong{font-size:20px}.admin-user-count span{color:var(--color-muted);font-size:12px}.admin-search{justify-content:start;align-items:center;gap:var(--space-3);grid-template-columns:minmax(260px,520px) max-content;display:grid}.admin-search label{display:grid;position:relative}.admin-search label>svg{z-index:1;width:18px;height:18px;color:var(--color-muted);position:absolute;top:50%;left:13px;transform:translateY(-50%)}.admin-search input{min-height:44px;padding-left:42px}.admin-search>button{width:auto;min-width:88px;padding-inline:var(--space-4)}.admin-data-layout{align-items:start;gap:var(--space-4);grid-template-columns:190px minmax(0,1fr);min-width:0;display:grid}.admin-data-nav{top:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-2);display:grid;position:sticky;overflow:hidden}.admin-data-nav-item{border-radius:var(--radius-sm);grid-template-columns:minmax(0,1fr) 32px;align-items:center;display:grid}.admin-data-nav-item:hover{background:color-mix(in srgb, var(--color-primary) 7%, transparent)}.admin-data-nav-item.active{color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, transparent)}.admin-data-nav-main{align-items:center;gap:var(--space-3);min-width:0;min-height:58px;color:inherit;padding:var(--space-2) 0 var(--space-2) var(--space-3);text-align:left;background:0 0;border:0;grid-template-columns:22px minmax(0,1fr);display:grid}.admin-data-nav-main>svg{width:19px;height:19px}.admin-data-nav-main>span{gap:2px;min-width:0;display:grid}.admin-data-nav-main strong{font-size:13px}.admin-data-nav-main small{color:var(--color-muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.admin-schema-trigger{width:28px;height:28px;color:var(--color-muted);background:0 0;border:0;border-radius:50%;place-items:center;padding:0;display:grid}.admin-schema-trigger:hover{color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 12%, transparent)}.admin-schema-trigger svg{width:16px;height:16px}.admin-data-pane{gap:var(--space-4);min-width:0;display:grid}.admin-layout{align-items:start;gap:var(--space-4);grid-template-columns:minmax(0,1fr) minmax(280px,360px);min-width:0;display:grid}.admin-user-list,.admin-editor{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);overflow:hidden}.admin-user-list>header,.admin-user-list>article{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);grid-template-columns:minmax(220px,1.5fr) minmax(92px,.55fr) minmax(150px,.85fr) 246px;display:grid}.admin-user-list>header{border-bottom:1px solid var(--color-border);min-height:42px;color:var(--color-muted);background:color-mix(in srgb, var(--color-canvas) 74%, transparent);font-size:12px;font-weight:800}.admin-user-list>article{border-bottom:1px solid var(--color-border);min-height:72px}.admin-user-list>article:last-child{border-bottom:0}.admin-user-identity{align-items:center;gap:var(--space-3);min-width:0;display:flex}.admin-user-identity>img,.admin-user-identity>span{background:color-mix(in srgb, var(--color-primary) 14%, var(--color-canvas));width:38px;height:38px;color:var(--color-primary);object-fit:cover;border-radius:50%;flex:0 0 38px;place-items:center;font-weight:900;display:grid}.admin-user-identity>div{gap:2px;min-width:0;display:grid}.admin-user-identity strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.admin-user-identity small,.admin-user-list time{color:var(--color-muted);font-size:12px}.admin-status{border:1px solid var(--color-border);width:max-content;color:var(--color-muted);border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800}.admin-status.active{border-color:color-mix(in srgb, var(--color-primary) 55%, var(--color-border));color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, transparent)}.admin-row-actions{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.admin-edit-button,.admin-expire-button,.admin-delete-button{border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:36px;color:var(--color-text);background:var(--color-canvas);justify-content:center;align-items:center;gap:6px;display:inline-flex}.admin-edit-button:hover{border-color:var(--color-primary);color:var(--color-primary)}.admin-expire-button{color:var(--color-secondary)}.admin-expire-button:hover:not(:disabled){border-color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 9%, var(--color-canvas))}.admin-expire-button:disabled{cursor:not-allowed;opacity:.4}.admin-delete-button{color:var(--color-danger)}.admin-delete-button:hover{border-color:var(--color-danger);background:color-mix(in srgb, var(--color-danger) 9%, var(--color-canvas))}.admin-edit-button svg,.admin-expire-button svg,.admin-delete-button svg{width:15px;height:15px}.admin-editor{top:var(--space-4);position:sticky}.admin-editor form{gap:var(--space-4);padding:var(--space-5);display:grid}.admin-editor form>header{border-bottom:1px solid var(--color-border);padding-bottom:var(--space-4);gap:4px;display:grid}.admin-editor form>header>span{color:var(--color-primary);font-size:12px;font-weight:800}.admin-editor form>header>small,.admin-editor form>p{color:var(--color-muted);font-size:12px;line-height:1.6}.admin-editor form>p{margin:0}.admin-editor-empty{align-content:center;place-items:center;gap:var(--space-2);min-height:300px;color:var(--color-muted);padding:var(--space-5);text-align:center;display:grid}.admin-editor-empty svg{width:32px;height:32px;color:var(--color-primary)}.admin-editor-empty p{margin:0}.admin-roles-panel{gap:var(--space-4);display:grid}.admin-role-add{align-items:end;gap:var(--space-4);border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));border-radius:var(--radius-md);background:linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 8%, var(--color-surface)), var(--color-surface));padding:var(--space-5);grid-template-columns:minmax(240px,1fr) minmax(260px,420px) max-content;display:grid}.admin-role-add>div{align-items:center;gap:var(--space-3);display:flex}.admin-role-add>div>svg{width:28px;height:28px;color:var(--color-primary)}.admin-role-add>div>span{gap:3px;display:grid}.admin-role-add>div small{color:var(--color-muted);font-size:12px;font-weight:500}.admin-role-add>button{min-height:42px;padding-inline:var(--space-5);white-space:nowrap}.admin-role-list{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);overflow:hidden}.admin-role-list>header,.admin-role-list>article{align-items:center;gap:var(--space-4);padding:var(--space-3) var(--space-4);grid-template-columns:minmax(240px,1fr) minmax(160px,.6fr) 110px;display:grid}.admin-role-list>header{border-bottom:1px solid var(--color-border);min-height:42px;color:var(--color-muted);background:var(--color-canvas);font-size:12px;font-weight:800}.admin-role-list>article{border-bottom:1px solid var(--color-border);min-height:72px}.admin-role-list>article:last-child{border-bottom:0}.admin-role-list time{color:var(--color-muted);font-size:12px}.admin-role-list .admin-user-identity strong{align-items:center;gap:var(--space-2);display:flex}.admin-role-list .admin-user-identity em{border:1px solid color-mix(in srgb, var(--color-primary) 46%, var(--color-border));color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, transparent);border-radius:999px;padding:2px 7px;font-size:10px;font-style:normal}.admin-role-list .admin-delete-button{min-height:36px}.admin-role-list .admin-delete-button:disabled{cursor:not-allowed;opacity:.38}.admin-delete-backdrop{z-index:1200;padding:var(--space-4);background:#000000b3;place-items:center;display:grid;position:fixed;inset:0}.admin-delete-dialog{border:1px solid color-mix(in srgb, var(--color-danger) 55%, var(--color-border));border-radius:var(--radius-md);background:var(--color-surface);width:min(500px,100%);box-shadow:var(--shadow-lg);overflow:hidden}.admin-delete-dialog>header{border-bottom:1px solid var(--color-border);padding:var(--space-4) var(--space-5);justify-content:space-between;align-items:center;display:flex}.admin-delete-dialog>header>div{align-items:center;gap:var(--space-3);display:flex}.admin-delete-dialog>header>div>svg{width:26px;height:26px;color:var(--color-danger)}.admin-delete-dialog>header span{gap:2px;display:grid}.admin-delete-dialog>header small{color:var(--color-muted);font-size:12px}.admin-delete-dialog>p{color:var(--color-muted);padding:0 var(--space-5) var(--space-4);margin:0;line-height:1.7}.admin-delete-target{margin:var(--space-5);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding:var(--space-3) var(--space-4);gap:3px;display:grid}.admin-delete-target span{color:var(--color-muted);font-size:12px}.admin-delete-acknowledgement{align-items:start;gap:var(--space-3);margin:0 var(--space-5) var(--space-5);border:1px solid color-mix(in srgb, var(--color-danger) 46%, var(--color-border));border-radius:var(--radius-sm);color:var(--color-text);background:color-mix(in srgb, var(--color-danger) 7%, var(--color-canvas));padding:var(--space-4);cursor:pointer;grid-template-columns:20px minmax(0,1fr);display:grid}.admin-delete-acknowledgement input{width:18px;height:18px;accent-color:var(--color-danger);margin:2px 0 0}.admin-delete-acknowledgement span{gap:3px;display:grid}.admin-delete-acknowledgement small{color:var(--color-muted);font-size:12px;font-weight:500;line-height:1.5}.admin-delete-dialog>footer{justify-content:flex-end;gap:var(--space-3);border-top:1px solid var(--color-border);padding:var(--space-4) var(--space-5);display:flex}.admin-delete-dialog>footer>button{justify-content:center;align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);min-height:42px;color:var(--color-text);background:var(--color-canvas);padding:0 var(--space-4);font-weight:800;display:inline-flex}.admin-delete-dialog>footer>.danger-action{border-color:var(--color-danger);color:var(--color-surface);background:var(--color-danger)}.admin-delete-dialog>footer>.danger-action:disabled{cursor:not-allowed;opacity:.45}.admin-delete-dialog>footer svg{width:17px;height:17px}.admin-expire-dialog>header>div>svg{color:var(--color-secondary)}.admin-role-remove-dialog>header>div>svg{color:var(--color-danger)}.admin-expire-reason{gap:var(--space-2);margin:0 var(--space-5) var(--space-5);color:var(--color-muted);font-size:13px;font-weight:700;display:grid}.admin-expire-reason textarea{color:var(--color-text);font-weight:500}.admin-schema-dialog{border:1px solid color-mix(in srgb, var(--color-primary) 46%, var(--color-border));border-radius:var(--radius-md);background:var(--color-surface);width:min(920px,100%);max-height:min(82vh,820px);box-shadow:var(--shadow-lg);grid-template-rows:auto minmax(0,1fr);display:grid;overflow:hidden}.admin-schema-dialog>header{border-bottom:1px solid var(--color-border);padding:var(--space-4) var(--space-5);justify-content:space-between;align-items:center;display:flex}.admin-schema-dialog>header>div{align-items:center;gap:var(--space-3);display:flex}.admin-schema-dialog>header>div>svg{width:26px;height:26px;color:var(--color-primary)}.admin-schema-dialog>header span{gap:2px;display:grid}.admin-schema-dialog>header small{color:var(--color-muted);font-size:12px}.admin-schema-content{min-height:0;padding:var(--space-5);overflow:auto}.admin-schema-content>section{gap:var(--space-3);display:grid}.admin-schema-content h3{color:var(--color-secondary);margin:0;font-size:14px}.admin-schema-content pre{border:1px solid var(--color-border);border-radius:var(--radius-sm);color:#c7f9ef;padding:var(--space-5);tab-size:2;background:#071019;margin:0;font:500 13px/1.75 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;overflow:auto}.admin-schema-content code{font:inherit;white-space:pre}.admin-generic-table-wrap{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);min-width:0;overflow:auto}.admin-generic-table{border-collapse:collapse;width:100%;min-width:860px}.admin-generic-table th,.admin-generic-table td{border-bottom:1px solid var(--color-border);max-width:320px;padding:var(--space-3) var(--space-4);text-align:left;vertical-align:top;font-size:12px;line-height:1.55}.admin-generic-table th{z-index:1;color:var(--color-muted);background:var(--color-canvas);white-space:nowrap;font-weight:850;position:sticky;top:0}.admin-generic-table td{overflow-wrap:anywhere}.admin-generic-table tbody tr:last-child td{border-bottom:0}.admin-generic-table tbody tr:hover{background:color-mix(in srgb, var(--color-primary) 5%, transparent)}@media (max-width:980px){.admin-data-layout{grid-template-columns:1fr}.admin-data-nav{grid-template-columns:repeat(4,minmax(0,1fr));position:static}.admin-layout{grid-template-columns:1fr}.admin-editor{position:static}.admin-role-add{grid-template-columns:1fr 1fr}.admin-role-add>div{grid-column:1/-1}}@media (max-width:700px){.admin-content{width:min(100% - 24px,1440px);padding-block:var(--space-5)}.admin-heading{flex-direction:column;align-items:stretch}.admin-user-count{width:100%}.admin-data-nav{display:flex;overflow-x:auto}.admin-data-nav-item{min-width:154px}.admin-topbar .environment-badge{display:none}.admin-role-add{grid-template-columns:1fr}.admin-role-add>div{grid-column:auto}.admin-role-list>header{display:none}.admin-role-list>article{grid-template-columns:minmax(0,1fr) auto}.admin-role-list time{grid-column:1}.admin-role-list .admin-delete-button{grid-area:1/2/3}.admin-schema-dialog{max-height:88vh}.admin-schema-dialog>header,.admin-schema-content{padding:var(--space-4)}.admin-schema-content pre{padding:var(--space-4);font-size:12px}.admin-search{grid-template-columns:minmax(0,1fr) max-content}.admin-user-list>header{display:none}.admin-user-list>article{gap:var(--space-2);grid-template-columns:minmax(0,1fr) auto}.admin-user-list time{grid-column:1}.admin-row-actions{grid-area:2/2}}@media (max-width:980px){.permutation-control-bar{grid-template-columns:1fr 1fr}.permutation-control-bar>label:last-of-type{grid-column:1/-1}.permutation-tree-section>header{grid-template-columns:1fr auto}.permutation-tree-title{grid-column:1/-1}.permutation-progress{text-align:left;justify-items:start}.permutation-pointer-stage{grid-template-columns:1fr}.permutation-pointer-copy{grid-template-columns:auto 1fr;align-items:center;min-height:0}}@media (max-width:680px){.permutation-control-bar{padding:var(--space-3);grid-template-columns:1fr}.permutation-control-bar>label:last-of-type{grid-column:auto}.permutation-custom-labels{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.permutation-custom-labels>strong,.permutation-custom-labels>small{grid-column:1/-1}.permutation-custom-labels label{min-width:0}.permutation-playback-actions{grid-template-columns:1fr 1fr;display:grid}.permutation-playback-actions button{justify-content:center}.permutation-progress{text-align:left;justify-items:start}.permutation-pointer-stage{padding:var(--space-3)}.permutation-pointer-copy{grid-template-columns:1fr}.permutation-pointer-copy span{font-size:42px}.permutation-pointer-lane,.permutation-candidate-row{grid-template-columns:42px minmax(0,1fr)}.permutation-pointer-track,.permutation-candidates{gap:4px}.permutation-candidates>div{padding:var(--space-1)}.permutation-candidates span{width:38px;height:38px;font-size:20px}.permutation-tree-section>header{grid-template-columns:1fr;align-items:stretch}.permutation-tree-title{grid-column:auto}.permutation-tree-section>header small{display:none}.permutation-tree-section>header>span{justify-self:start}.permutation-tree-zoom{justify-content:flex-end;justify-self:stretch}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.app-toast{z-index:1600;align-items:center;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 58%, var(--color-border));border-radius:var(--radius-md);width:min(420px,100vw - 24px);min-height:58px;color:var(--color-text);background:color-mix(in srgb, var(--color-surface) 96%, transparent);padding:var(--space-3) var(--space-3) var(--space-3) var(--space-4);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);animation:toast-enter var(--duration-normal) var(--ease-standard);grid-template-columns:24px minmax(0,1fr) 28px;display:grid;position:fixed;bottom:clamp(16px,4vw,36px);right:clamp(12px,3vw,32px);box-shadow:0 18px 50px #00000057}.app-toast>svg{width:22px;height:22px;color:var(--color-primary)}.app-toast>span{font-size:14px;font-weight:800;line-height:1.5}.app-toast>button{width:28px;height:28px;color:var(--color-muted);background:0 0;border:0;border-radius:50%;place-items:center;display:grid}.app-toast>button:hover{color:var(--color-text);background:color-mix(in srgb, var(--color-text) 8%, transparent)}.app-toast>button svg{width:16px;height:16px}@keyframes toast-enter{0%{opacity:0;transform:translateY(12px)scale(.98)}to{opacity:1;transform:none}}.referral-page{min-height:100vh;padding-bottom:clamp(48px,8vw,96px)}.referral-page.embedded{width:100%;min-height:0}.referral-page .app-toast{gap:var(--space-2);border-radius:var(--radius-sm);width:max-content;max-width:calc(100vw - 32px);min-height:44px;animation:referral-toast-enter var(--duration-normal) var(--ease-standard);grid-template-columns:18px minmax(0,1fr) 24px;padding:8px 10px 8px 12px;inset:88px auto auto 50%;transform:translate(-50%);box-shadow:0 10px 30px #0003}.referral-page .app-toast>svg{width:18px;height:18px}.referral-page .app-toast>span{font-size:13px;font-weight:700}.referral-page .app-toast>button{width:24px;height:24px}@keyframes referral-toast-enter{0%{opacity:0;transform:translate(-50%,-8px)scale(.98)}to{opacity:1;transform:translate(-50%)}}.referral-topbar{z-index:200;border-bottom:1px solid var(--color-border);background:color-mix(in srgb, var(--color-canvas) 90%, transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);width:100%;min-height:64px;position:sticky;top:0}.referral-topbar-inner{justify-content:space-between;align-items:center;width:100%;min-height:64px;padding:0 clamp(18px,4vw,64px);display:flex}.referral-topbar .brand{color:var(--color-text);text-decoration:none}.referral-topbar .brand-mark svg{width:18px;height:18px}.referral-hero{width:min(1180px,100% - 40px);min-height:430px;margin:clamp(20px, 4vw, 56px) auto var(--space-5);border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));border-radius:calc(var(--radius-md) * 2);background:radial-gradient(circle at 78% 40%, color-mix(in srgb, var(--color-primary) 20%, transparent), transparent 30%), linear-gradient(135deg, color-mix(in srgb, var(--color-surface-raised) 90%, transparent), color-mix(in srgb, var(--color-canvas) 94%, transparent));grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);align-items:center;gap:clamp(32px,7vw,96px);padding:clamp(32px,6vw,72px);display:grid;position:relative;overflow:hidden;box-shadow:0 30px 80px #00000038}.referral-hero:before{opacity:.32;background-image:linear-gradient(color-mix(in srgb, var(--color-primary) 14%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--color-primary) 14%, transparent) 1px, transparent 1px);content:"";pointer-events:none;background-size:36px 36px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(90deg,#000,#0000 72%);mask-image:linear-gradient(90deg,#000,#0000 72%)}.referral-hero-copy{z-index:1;position:relative}.referral-eyebrow{align-items:center;gap:var(--space-2);border:1px solid color-mix(in srgb, var(--color-secondary) 44%, var(--color-border));color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 9%, transparent);letter-spacing:.05em;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:900;display:inline-flex}.referral-eyebrow svg{width:16px;height:16px}.referral-hero h1{max-width:720px;margin:var(--space-5) 0 var(--space-4);letter-spacing:-.045em;font-size:clamp(38px,6vw,68px);line-height:1.08}.referral-hero-copy>p{max-width:700px;color:var(--color-muted);margin:0;font-size:clamp(16px,1.8vw,19px);line-height:1.85}.referral-highlights{gap:var(--space-3);margin-top:var(--space-5);flex-wrap:wrap;display:flex}.referral-highlights span{color:var(--color-text);align-items:center;gap:7px;font-size:13px;font-weight:800;display:inline-flex}.referral-highlights svg{width:16px;height:16px;color:var(--color-primary)}.referral-orbit{aspect-ratio:1;border:1px solid color-mix(in srgb, var(--color-primary) 32%, transparent);width:min(300px,100%);box-shadow:inset 0 0 70px color-mix(in srgb, var(--color-primary) 8%, transparent), 0 0 80px color-mix(in srgb, var(--color-primary) 10%, transparent);border-radius:50%;justify-self:center;position:relative}.referral-orbit:before,.referral-orbit:after{border:1px solid color-mix(in srgb, var(--color-primary) 25%, transparent);content:"";border-radius:50%;position:absolute}.referral-orbit:before{inset:15%}.referral-orbit:after{inset:31%}.referral-orbit-core{color:#06130f;background:linear-gradient(145deg, var(--color-primary), color-mix(in srgb, var(--color-primary) 58%, var(--color-secondary)));box-shadow:0 0 34px color-mix(in srgb, var(--color-primary) 58%, transparent);border-radius:50%;place-items:center;display:grid;position:absolute;inset:35%}.referral-orbit-core svg{width:42%;height:42%}.referral-orbit i{border:3px solid var(--color-canvas);background:var(--color-secondary);width:14px;height:14px;box-shadow:0 0 18px color-mix(in srgb, var(--color-secondary) 70%, transparent);border-radius:50%;position:absolute}.referral-orbit i:first-of-type{top:9%;left:47%}.referral-orbit i:nth-of-type(2){bottom:24%;right:11%}.referral-orbit i:nth-of-type(3){bottom:17%;left:13%}.referral-orbit>b{border:1px solid color-mix(in srgb, var(--color-secondary) 52%, var(--color-border));color:var(--color-secondary);background:var(--color-surface);border-radius:999px;padding:8px 12px;font-size:14px;position:absolute;top:17%;right:-3%}.referral-invite-landing{width:min(1180px,100% - 40px);margin:clamp(20px, 4vw, 56px) auto var(--space-5);border:1px solid color-mix(in srgb, var(--color-primary) 34%, var(--color-border));border-radius:calc(var(--radius-md) * 2);background:linear-gradient(145deg, color-mix(in srgb, var(--color-surface-raised) 94%, transparent), color-mix(in srgb, var(--color-canvas) 96%, transparent));position:relative;overflow:hidden;box-shadow:0 30px 80px #00000038}.referral-invite-primary{z-index:1;border-bottom:1px solid color-mix(in srgb, var(--color-secondary) 28%, var(--color-border));background:linear-gradient(110deg, color-mix(in srgb, var(--color-secondary) 12%, var(--color-surface)), color-mix(in srgb, var(--color-primary) 7%, var(--color-surface)));grid-template-columns:72px minmax(0,1fr) auto;align-items:center;gap:clamp(18px,3vw,32px);padding:clamp(24px,4vw,40px);display:grid;position:relative}.referral-invite-primary>span{color:#161000;background:linear-gradient(145deg, var(--color-secondary), color-mix(in srgb, var(--color-secondary) 72%, white));width:64px;height:64px;box-shadow:0 12px 30px color-mix(in srgb, var(--color-secondary) 18%, transparent);border-radius:20px;place-items:center;display:grid}.referral-invite-primary>span svg{width:30px;height:30px}.referral-invite-primary-copy{gap:7px;display:grid}.referral-invite-primary-copy em{width:fit-content;color:var(--color-secondary);letter-spacing:.06em;font-size:12px;font-style:normal;font-weight:900}.referral-invite-primary h1,.referral-invite-primary p{margin:0}.referral-invite-primary h1{letter-spacing:-.025em;font-size:clamp(27px,3.5vw,40px);line-height:1.15}.referral-invite-primary p{max-width:650px;color:var(--color-muted);line-height:1.65}.referral-invite-primary button{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-sm);min-height:50px;padding:0 var(--space-5);white-space:nowrap;font-weight:900;display:inline-flex}.referral-invite-primary button svg{width:18px;height:18px}.referral-invite-value{grid-template-columns:minmax(0,1fr) 240px;align-items:center;gap:clamp(30px,7vw,88px);min-height:340px;padding:clamp(32px,6vw,64px);display:grid;position:relative;overflow:hidden}.referral-invite-value:before{opacity:.28;background-image:linear-gradient(color-mix(in srgb, var(--color-primary) 14%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--color-primary) 14%, transparent) 1px, transparent 1px);content:"";pointer-events:none;background-size:36px 36px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(90deg,#000,#0000 78%);mask-image:linear-gradient(90deg,#000,#0000 78%)}.referral-invite-value h2{max-width:700px;margin:var(--space-4) 0 var(--space-3);letter-spacing:-.035em;font-size:clamp(30px,4.5vw,48px);line-height:1.12}.referral-invite-value .referral-hero-copy>p{max-width:650px}.referral-invite-value .referral-orbit{width:min(230px,100%)}.referral-owner-panel,.referral-guest-card,.referral-loading,.referral-error,.referral-steps,.referral-rules{width:min(1180px,100% - 40px);margin:var(--space-5) auto 0}.referral-owner-panel{gap:var(--space-4);grid-template-columns:minmax(240px,.55fr) minmax(0,1.45fr);display:grid}.referral-stats{gap:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.referral-stats article{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);min-height:190px;padding:var(--space-5);align-content:space-between;display:grid}.referral-stats article>svg{width:28px;height:28px;color:var(--color-primary)}.referral-stats article>span{color:var(--color-muted);align-self:end;font-size:13px;font-weight:700}.referral-stats strong{font-size:clamp(30px,4vw,46px)}.referral-stats small{color:var(--color-muted);font-size:14px}.referral-link-card{align-content:center;gap:var(--space-4);border:1px solid color-mix(in srgb, var(--color-primary) 38%, var(--color-border));border-radius:var(--radius-md);background:linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 9%, var(--color-surface)), var(--color-surface));padding:clamp(22px,4vw,40px);display:grid}.referral-link-card>div:first-child{gap:4px;display:grid}.referral-link-card>div:first-child>span{font-size:18px;font-weight:900}.referral-link-card>div:first-child>small{color:var(--color-muted)}.referral-link-card>label{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);padding-left:var(--space-3);grid-template-columns:22px minmax(0,1fr);display:grid;position:relative}.referral-link-card>label>svg{width:18px;height:18px;color:var(--color-primary)}.referral-link-card input{background:0 0;border:0;min-width:0;padding-left:0}.referral-actions{gap:var(--space-3);grid-template-columns:1fr 1fr;display:grid}.referral-actions button,.referral-guest-card button{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-sm);min-height:48px;padding:0 var(--space-5);font-weight:900;display:inline-flex}.referral-actions svg,.referral-guest-card button svg{width:18px;height:18px}.referral-share-button{border:1px solid color-mix(in srgb, var(--color-primary) 66%, var(--color-border));color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 12%, var(--color-canvas))}.referral-share-button:hover{background:color-mix(in srgb, var(--color-primary) 19%, var(--color-canvas))}.referral-guest-card{align-items:center;gap:var(--space-5);border:1px solid color-mix(in srgb, var(--color-secondary) 42%, var(--color-border));border-radius:var(--radius-md);background:linear-gradient(135deg, color-mix(in srgb, var(--color-secondary) 9%, var(--color-surface)), var(--color-surface));grid-template-columns:72px minmax(0,1fr) auto;padding:clamp(22px,4vw,36px);display:grid}.referral-guest-card>span{color:#161000;background:var(--color-secondary);border-radius:20px;place-items:center;width:64px;height:64px;display:grid}.referral-guest-card>span svg{width:30px;height:30px}.referral-guest-card h2,.referral-guest-card p{margin:0}.referral-guest-card div{gap:var(--space-2);display:grid}.referral-guest-card em{border:1px solid color-mix(in srgb, var(--color-secondary) 54%, var(--color-border));width:fit-content;color:var(--color-secondary);background:color-mix(in srgb, var(--color-secondary) 10%, transparent);border-radius:999px;padding:5px 9px;font-size:12px;font-style:normal;font-weight:900}.referral-guest-card p{color:var(--color-muted);line-height:1.65}.referral-loading,.referral-error{border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-muted);background:var(--color-surface);padding:var(--space-6);text-align:center}.referral-error{justify-items:center;gap:var(--space-2);display:grid}.referral-error p{margin:0}.referral-error button{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-canvas);min-height:40px;padding:0 var(--space-4)}.referral-steps{padding-top:clamp(28px,5vw,64px)}.referral-steps>header{gap:var(--space-2);margin-bottom:var(--space-5);display:grid}.referral-steps>header>span,.referral-rules>div>span{color:var(--color-primary);letter-spacing:.12em;font-size:12px;font-weight:900}.referral-steps h2,.referral-rules h2{margin:0;font-size:clamp(26px,3.5vw,38px)}.referral-steps>div{gap:var(--space-4);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.referral-steps article{align-content:start;gap:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);min-height:230px;padding:var(--space-5);display:grid;position:relative;overflow:hidden}.referral-steps article>b{color:color-mix(in srgb, var(--color-primary) 14%, transparent);font-size:62px;line-height:1;position:absolute;top:10px;right:16px}.referral-steps article>svg{width:28px;height:28px;color:var(--color-secondary)}.referral-steps h3{margin:var(--space-4) 0 0;font-size:19px}.referral-steps p{color:var(--color-muted);margin:0;line-height:1.7}.referral-rules{border-top:1px solid var(--color-border);grid-template-columns:minmax(260px,.7fr) minmax(0,1.3fr);gap:clamp(28px,7vw,84px);margin-top:clamp(40px,7vw,88px);padding-top:clamp(32px,5vw,56px);display:grid}.referral-rules>div{align-content:start;gap:var(--space-2);display:grid}.referral-rules ul{gap:var(--space-3);margin:0;padding:0;list-style:none;display:grid}.referral-rules li{color:var(--color-muted);padding-left:22px;line-height:1.7;position:relative}.referral-rules li:before{background:var(--color-primary);content:"";border-radius:50%;width:7px;height:7px;position:absolute;top:.68em;left:0}.wechat-share-guide{z-index:1700;padding:max(18px, env(safe-area-inset-top)) 18px 18px;background:#000000b3;place-items:start end;display:grid;position:fixed;inset:0}.wechat-share-guide>div{justify-items:center;gap:var(--space-3);border:1px solid color-mix(in srgb, var(--color-primary) 52%, var(--color-border));border-radius:var(--radius-md);background:var(--color-surface);width:min(360px,100vw - 36px);padding:34px var(--space-5) var(--space-5);box-shadow:var(--shadow-lg);text-align:center;margin-top:34px;display:grid;position:relative}.wechat-share-guide-arrow{color:var(--color-primary);font-size:48px;font-weight:300;line-height:1;position:absolute;top:-54px;right:5px;transform:rotate(-8deg)}.wechat-share-guide>div>button{width:32px;height:32px;color:var(--color-muted);background:0 0;border:0;border-radius:50%;place-items:center;display:grid;position:absolute;top:8px;right:8px}.wechat-share-guide>div>button svg{width:17px;height:17px}.wechat-share-guide>div>svg{width:34px;height:34px;color:var(--color-primary)}.wechat-share-guide strong{font-size:18px}.wechat-share-guide p{color:var(--color-muted);margin:0;line-height:1.7}@media (max-width:820px){.referral-hero{grid-template-columns:1fr;min-height:auto}.referral-orbit{width:230px}.referral-invite-primary{grid-template-columns:56px minmax(0,1fr)}.referral-invite-primary>span{border-radius:16px;width:52px;height:52px}.referral-invite-primary>button{grid-column:1/-1}.referral-invite-value{grid-template-columns:1fr}.referral-invite-value .referral-orbit{width:200px}.referral-owner-panel{grid-template-columns:1fr}.referral-stats article{min-height:150px}.referral-guest-card{grid-template-columns:56px minmax(0,1fr)}.referral-guest-card>span{border-radius:16px;width:52px;height:52px}.referral-guest-card>button{grid-column:1/-1}.referral-steps>div{grid-template-columns:1fr}.referral-steps article{min-height:180px}.referral-rules{grid-template-columns:1fr}}@media (max-width:560px){.referral-hero,.referral-invite-landing,.referral-owner-panel,.referral-guest-card,.referral-loading,.referral-error,.referral-steps,.referral-rules{width:min(100% - 24px,1180px)}.referral-topbar-inner{width:100%;padding-inline:12px}.referral-topbar,.referral-topbar-inner{min-height:60px}.referral-topbar .brand>span:last-child{display:none}.referral-hero{margin-top:var(--space-3);padding:var(--space-5)}.referral-hero h1{font-size:38px}.referral-orbit{width:190px}.referral-invite-primary{padding:var(--space-5);text-align:center;grid-template-columns:1fr;justify-items:center}.referral-invite-primary-copy{justify-items:center}.referral-invite-primary>button{grid-column:auto;width:100%}.referral-invite-value{gap:var(--space-6);min-height:auto;padding:var(--space-5)}.referral-invite-value h2{font-size:34px}.referral-invite-value .referral-orbit{width:180px}.referral-stats{gap:var(--space-3)}.referral-stats article{min-height:132px;padding:var(--space-4)}.referral-link-card{padding:var(--space-4)}.referral-actions{grid-template-columns:1fr}.referral-guest-card{text-align:center;grid-template-columns:1fr}.referral-guest-card>span,.referral-guest-card em{justify-self:center}.referral-page .app-toast{top:calc(env(safe-area-inset-top) + 76px);max-width:calc(100vw - 24px);bottom:auto;left:50%;right:auto}}[data-theme=premium-workspace] body{background-color:#0000;background-image:radial-gradient(circle at 55% 40%,#12342729,#0000 30%),radial-gradient(circle at 8% 4%,#ffffff09,#0000 24%),linear-gradient(#030405,#090b0c 70%,#040505);background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:auto;background-attachment:fixed;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box}[data-theme=premium-workspace] :is(.topbar,.sidebar,.mobile-bottom-nav){-webkit-backdrop-filter:blur(22px)saturate(135%);backdrop-filter:blur(22px)saturate(135%);background:linear-gradient(145deg,#ffffff12,#ffffff05 28%,#080d0fb8 70%),radial-gradient(circle at 12% 0,#ffffff1b,#0000 30%);border-color:#e1fff229;box-shadow:0 24px 70px #00000075,inset 0 1px #ffffff1a,inset 0 -1px #ffffff06}[data-theme=premium-workspace] :is(.topbar,.sidebar,.mobile-bottom-nav):before{z-index:0;content:"";pointer-events:none;background:linear-gradient(120deg,#ffffff18,#0000 18% 72%,#4cffa906);position:absolute;inset:0}[data-theme=premium-workspace] :is(.topbar,.sidebar):after{z-index:0;content:"";opacity:.72;pointer-events:none;background:linear-gradient(90deg,#0000,#ffffff4d,#0000);height:1px;position:absolute;top:0;left:8%;right:8%}[data-theme=premium-workspace] :is(.topbar,.sidebar,.mobile-bottom-nav)>*{z-index:1;position:relative}[data-theme=premium-workspace] .sidebar{background-color:#060a0bb8}[data-theme=premium-workspace] :is(.brand,.sidebar-home-row,.sidebar-switcher,.favorite-filter,.sidebar-empty){-webkit-backdrop-filter:blur(16px)saturate(125%);backdrop-filter:blur(16px)saturate(125%);background:linear-gradient(145deg,#ffffff0f,#070c0d8a);border:1px solid #e1fff21f;border-radius:11px;box-shadow:0 13px 34px #0000004d,inset 0 1px #ffffff13}[data-theme=premium-workspace] .brand{padding:5px 9px 5px 6px}[data-theme=premium-workspace] .sidebar-label{width:fit-content;margin-left:var(--space-2);color:#77827d;letter-spacing:.08em;font-weight:800}[data-theme=premium-workspace] :is(.nav-item,.curriculum-nav-item){color:#9eaaa5;box-shadow:none;background:0 0;border-color:#0000}[data-theme=premium-workspace] :is(.nav-item,.curriculum-nav-item):hover{color:#dbe2df;background:linear-gradient(90deg,#44524c57,#232b2833);border-color:#ffffff13;transform:translate(2px)}[data-theme=premium-workspace] :is(.nav-item.active,.curriculum-nav-item.active){color:#edf2ef;background:linear-gradient(90deg,#44524c9e,#232b285c);border-color:#ffffff14;box-shadow:inset 3px 0 #18e08ac7,0 12px 30px #00000047,inset 0 1px #ffffff0d}[data-theme=premium-workspace] :is(.nav-item,.curriculum-nav-item) svg{color:currentColor;stroke-width:1.75px}[data-theme=premium-workspace] :is(.theme-picker-popover,.user-menu-popover,.modal,.tool-panel){isolation:isolate;-webkit-backdrop-filter:blur(22px)saturate(135%);backdrop-filter:blur(22px)saturate(135%);background:linear-gradient(145deg,#ffffff12,#ffffff05 28%,#080d0fbd 70%),radial-gradient(circle at 12% 0,#ffffff1a,#0000 30%);border:1px solid #e1fff229;border-radius:18px;box-shadow:0 24px 70px #00000085,inset 0 1px #ffffff1a,inset 0 -1px #ffffff06}[data-theme=premium-workspace] :is(.modal,.tool-panel){position:relative}[data-theme=premium-workspace] :is(.theme-picker-popover,.user-menu-popover,.modal,.tool-panel):before{z-index:0;border-radius:inherit;content:"";pointer-events:none;background:linear-gradient(120deg,#ffffff17,#0000 18% 72%,#4cffa906);position:absolute;inset:0}[data-theme=premium-workspace] :is(.theme-picker-popover,.user-menu-popover,.modal,.tool-panel):after{z-index:0;content:"";opacity:.7;pointer-events:none;background:linear-gradient(90deg,#0000,#ffffff4d,#0000);height:1px;position:absolute;top:0;left:8%;right:8%}[data-theme=premium-workspace] :is(.theme-picker-popover,.user-menu-popover,.modal,.tool-panel)>*{z-index:1;position:relative}[data-theme=premium-workspace] :is(.module-card,.tool-control-card,.notice){isolation:isolate;-webkit-backdrop-filter:blur(18px)saturate(128%);backdrop-filter:blur(18px)saturate(128%);background:linear-gradient(145deg,#ffffff0f,#ffffff03 30%,#070c0eab);border:1px solid #e1fff21f;border-radius:14px;position:relative;box-shadow:0 18px 48px #0006,inset 0 1px #ffffff14,inset 0 -1px #ffffff05}[data-theme=premium-workspace] :is(.module-card,.tool-control-card,.notice):before{z-index:0;border-radius:inherit;content:"";pointer-events:none;background:linear-gradient(116deg,#ffffff12,#0000 21% 76%,#18e08a05);position:absolute;inset:0}[data-theme=premium-workspace] :is(.module-card,.tool-control-card,.notice)>*{z-index:1;position:relative}[data-theme=premium-workspace] .module-card:hover{background:linear-gradient(145deg,#ffffff15,#ffffff05 28%,#08100eb3);border-color:#57ffab40;transform:translateY(-5px);box-shadow:0 24px 55px #0000007a,0 0 24px #18e08a0d,inset 0 1px #ffffff21}[data-theme=premium-workspace] .primary-tool-layout{perspective:1400px}[data-theme=premium-workspace] .tool-workspace-card{isolation:isolate;transform-style:preserve-3d;-webkit-backdrop-filter:blur(16px)saturate(135%);backdrop-filter:blur(16px)saturate(135%);background:linear-gradient(135deg,#fff3,#ffffff09 26%,#9ebcb00e 62%,#ffffff05),radial-gradient(circle at 20% 0,#ffffff26,#0000 34%),#080e0da3;border:1px solid #e6fff64d;border-radius:17px;transition:transform .52s cubic-bezier(.2,.78,.2,1),border-color .36s,box-shadow .42s;position:relative;overflow:hidden;transform:perspective(1400px)translateZ(14px)rotateX(.01deg);box-shadow:0 22px 52px #0000007a,0 0 34px #18e08a12,inset 0 1px #ffffff3d,inset 0 -1px #ffffff09}[data-theme=premium-workspace] .tool-workspace-card:before{z-index:0;border-radius:inherit;content:"";opacity:.65;pointer-events:none;background:linear-gradient(115deg,#ffffff2e,#0000 23% 75%,#ffffff0a);position:absolute;inset:0}[data-theme=premium-workspace] .tool-workspace-card:after{z-index:0;filter:blur(24px);content:"";pointer-events:none;background:radial-gradient(#14ff872e,#14ff8709 46%,#0000 72%);border-radius:50%;height:112px;position:absolute;bottom:-64px;left:12%;right:12%}[data-theme=premium-workspace] .tool-workspace-card>*{z-index:1;position:relative}[data-theme=premium-workspace] .tool-workspace-card:hover{border-color:#f0fff975;transform:perspective(1400px)translate3d(0,-5px,24px)rotateX(.42deg)rotateY(-.3deg)scale(1.003);box-shadow:0 0 46px #00ff8429,0 30px 66px #0000008a,inset 0 1px #ffffff4d}[data-theme=premium-workspace] :is(.brand-mark,.module-icon,.icon-button,.user-chip,input,select,textarea,.themed-select-trigger,.favorite){color:#c7d0cc;-webkit-backdrop-filter:blur(16px)saturate(126%);backdrop-filter:blur(16px)saturate(126%);background:linear-gradient(145deg,#fff1,#080e0fa3);border-color:#e1fff224;border-radius:12px;box-shadow:0 12px 30px #00000057,inset 0 1px #ffffff14}[data-theme=premium-workspace] :is(.sidebar-switcher button.active,.theme-option.active){color:#eef3f1;background:#1a2220;box-shadow:inset 0 1px #ffffff0e}[data-theme=premium-workspace] :is(input,select,textarea,.themed-select-trigger):focus-visible{border-color:#18e08a85;outline:2px solid #18e08a1f}[data-theme=premium-workspace] :is(.primary-action,.command-button){color:#03150d;background:linear-gradient(#29ec9a,#0dbd71);border-color:#18e08a;border-radius:11px;box-shadow:0 10px 28px #18e08a24,inset 0 1px #ffffff4d}[data-theme=premium-workspace] :is(.primary-action,.command-button):hover{box-shadow:0 13px 34px #18e08a33,inset 0 1px #ffffff57}[data-theme=premium-workspace] :is(.favorite.active,.module-favorite.active){color:#ff6d73;background:#ff5c6313;border-color:#ff5c6373}[data-theme=premium-workspace] :is(.status-success,[data-status=success]){color:#18e08a}@media (prefers-reduced-motion:reduce){[data-theme=premium-workspace] .tool-workspace-card,[data-theme=premium-workspace] .tool-workspace-card:hover{transition:none;transform:none}}