:root{--surface:#ffffff;--surface-muted:#f6f8fa;--hover:#eef1f4;--text:#1f2328;--muted:#59636e;--border:#d1d9e0;--accent:#0969da;--accent-hover:#0550ae;--accent-soft:#ddf4ff;--accent-soft-hover:#b6e3ff;--accent-border:#80b9f0;--danger:#cf222e;--danger-hover:#a40e26;--danger-soft:#fff1f1;--danger-border:#ffb4b8;--danger-soft-hover:#ffebe9}:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans TC,sans-serif;color:var(--text);background:var(--surface-muted);font-synthesis:none;font-weight:450;-webkit-font-smoothing:antialiased;font-size:15px;color-scheme:light}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{color:inherit;border:0;cursor:pointer;background:transparent;-webkit-tap-highlight-color:transparent}button:disabled{opacity:.32;cursor:default}button:focus-visible,[role=button]:focus-visible{outline:3px solid var(--accent);outline-offset:4px}input,textarea{width:100%;border:1px solid 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.dock-grip{width:32px;border:0;order:0}.dock-shortcuts{display:flex;flex:none;order:1}.dock-shortcuts>button:first-child{width:32px}.tool-strip{flex:1;min-width:0;overflow-x:auto;scrollbar-width:none;overscroll-behavior:contain;order:2}.tool-strip::-webkit-scrollbar{display:none}.tool-strip button{display:flex;align-items:center;justify-content:center}.tool-strip button.active{background:var(--accent-soft);color:var(--accent)}.tool-strip button:focus-visible{outline-offset:-3px}.drawing-tools{display:flex;min-width:244px;width:100%}.drawing-tools>button{flex:1;min-width:44px}.drawing-tools .brush-settings-toggle{flex:none;width:24px;min-width:24px}.side-dock[data-hand=right] .dock-grip{order:3}.side-dock[data-hand=right] .dock-shortcuts{order:2}.side-dock[data-hand=right] .tool-strip{order:1}.is-compact .dock-anchor{width:118px;align-self:flex-start}.is-compact[data-hand=right] .dock-anchor{align-self:flex-end}.toolbar{pointer-events:auto;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:4px;margin:4px 0;box-shadow:0 3px 16px #1f23281c}.side-dock[data-drag-ready] .dock-anchor{outline:2px solid var(--accent)}.recording-badge{left:8px;top:6px}.side-dock[data-hand=right] .recording-badge{left:auto;right:8px}.record-controls{display:grid;gap:4px}.record-heading{display:contents}.record-heading>button{width:32px;min-height:44px;height:44px;grid-column:4;grid-row:1}.record-controls.capturing{grid-template-columns:minmax(66px,1fr) minmax(100px,1.5fr) 52px 32px;align-items:center}.record-status{display:flex;align-items:center;gap:5px;font-size:12px;font-variant-numeric:tabular-nums;padding-left:4px;white-space:nowrap}.capturing .record-status-name{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.record-save-actions{display:contents}.record-save-actions .record-finish{grid-column:2;grid-row:1}.toolbar button.record-cancel{grid-column:3;grid-row:1;width:52px;font-size:11px}.record-controls.preparing{grid-template-columns:1fr 1.5fr 32px;align-items:center}.preparing .record-heading>button{grid-column:3}.preparing .record-start{grid-column:2;grid-row:1}.record-controls.has-playback{grid-template-columns:minmax(0,1fr) 44px}.has-playback .record-heading>button{grid-column:2;grid-row:1;width:44px}.has-playback .record-heading-meta,.has-playback .playback-status{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.record-timeline{grid-column:1;grid-row:1;display:flex;gap:8px;align-items:center;padding:0 4px;min-width:0}.record-time{font-size:11px}.record-timeline input{flex:1;min-width:0;width:0}.replay-actions{grid-column:1;grid-row:2;grid-template-columns:minmax(52px,1fr) 68px minmax(84px,1.5fr)}.record-again{grid-column:2;grid-row:2}@media(max-width:373px){.tool-strip{box-shadow:inset -5px 0 5px -5px var(--muted)}}.side-dock[data-popover-direction=up]{--brush-chevron:180deg}.side-dock[data-popover-direction=down]{--brush-chevron:0deg}.side-dock[data-popover-direction=left]{--brush-chevron:90deg}.side-dock[data-popover-direction=right]{--brush-chevron:-90deg}.brush-settings-toggle svg{transform:rotate(var(--brush-chevron))}.brush-settings-toggle[aria-expanded=true] svg{transform:rotate(calc(var(--brush-chevron) + 180deg))}.drawing-tools{min-width:288px}.tool-strip{overflow:visible;box-shadow:none}.drawing-tools{min-width:0}.drawing-tools>button{min-width:0;width:0;flex:1;padding:2px}.drawing-tools .brush-settings-toggle{width:18px;min-width:18px;flex:none;padding:0}.dock-anchor .dock-grip{width:24px;padding:0}.dock-shortcuts>button:first-child{width:24px;padding:0}.dock-shortcuts>button:last-child{width:30px;padding:0}.is-compact .dock-anchor{width:88px}.drawing-tools .brush-settings-toggle{border-left:0}.dock-shortcuts{border-right:1px solid var(--border)}.side-dock[data-hand=right] .dock-shortcuts{border-right:0;border-left:1px solid var(--border)}.is-compact .dock-shortcuts,.is-compact[data-hand=right] .dock-shortcuts{border:0}.side-dock:not(.is-compact) .dock-shortcuts{margin-right:6px}.side-dock[data-hand=right]:not(.is-compact) .dock-shortcuts{margin-right:0;margin-left:6px}.opens-down .record-panel-collapse svg{transform:rotate(180deg)}.record-entry-button[data-activity=recording]{background:var(--danger-soft);color:var(--danger)}.record-entry-button[data-activity=playing],.record-entry-button[data-activity=paused]{background:var(--accent-soft);color:var(--accent)}.record-entry-button[data-activity=playing] svg{animation:playback-pulse 1.4s ease-in-out infinite;transform-origin:center}@keyframes playback-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.88)}}@media(prefers-reduced-motion:reduce){.record-entry-button[data-activity=playing] svg{animation:none}}.replay-actions{grid-template-columns:minmax(84px,1.5fr) 68px minmax(52px,1fr)}.toolbar .record-controls button{height:40px;min-height:40px;border-radius:9px;font-size:11px;padding:4px 6px}.toolbar .record-controls button svg{width:16px;height:16px}.record-controls .record-heading>button{width:32px;height:40px;min-height:40px;padding:4px}.record-controls.has-playback{grid-template-columns:minmax(0,1fr) 32px}.record-controls .replay-actions{grid-template-columns:minmax(80px,1fr) 60px minmax(52px,1fr)}.record-controls .replay-actions select{min-height:40px;height:40px;border-radius:9px;font-size:12px}.record-controls .record-timeline{min-height:36px}.record-controls .record-timeline input{height:36px}.toolbar .record-controls .record-cancel{min-height:40px}.record-controls.has-playback{grid-template-columns:126px minmax(0,1fr) 30px 28px;align-items:center;gap:3px}.has-playback .replay-actions{grid-column:1;grid-row:1;grid-template-columns:32px 56px 32px;gap:3px}.has-playback .replay-actions button span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.has-playback .record-timeline{grid-column:2;grid-row:1;display:flex;flex-direction:column;gap:0;justify-content:center;padding:0 3px;height:40px;min-height:40px}.has-playback .record-time{font-size:9px;line-height:12px}.has-playback .record-timeline input{flex:none;width:100%;height:24px;min-height:24px}.has-playback .video-export-button{grid-column:3;grid-row:1;color:var(--accent)}.has-playback .record-heading>button{grid-column:4;grid-row:1;width:28px}.has-playback .replay-actions select{font-size:11px;padding:0 2px}.add-popover{display:flex;align-items:center;gap:3px}.add-popover .popover-header{order:5;padding:0;margin:0}.add-popover .popover-header strong{display:none}.add-popover .add-option{width:44px;min-width:0;height:40px;min-height:40px;padding:3px;justify-content:center;flex:1}.add-popover .add-option>span:last-child:not(.mini-token){display:none}.add-popover .add-new-board{border-top:0;border-left:1px solid var(--border);margin:0;border-radius:0;padding:3px}.add-popover .mini-token{width:27px;height:27px}.add-popover .icon-button{width:28px;height:40px}.compact-brush{display:flex;align-items:center;gap:4px;flex-wrap:wrap;padding:0}.compact-brush .popover-header{order:6;padding:0;margin:0}.compact-brush .popover-header strong,.compact-brush .width-label,.compact-brush .brush-preview{display:none}.compact-brush .popover-header button{width:28px;height:40px}.compact-brush .current-ink{width:32px;height:40px;display:grid;place-items:center;padding:3px}.compact-brush .current-ink span{width:24px;height:24px;border:2px solid white;border-radius:50%;box-shadow:0 0 0 1px var(--border)}.compact-brush .color-options{display:flex;gap:0;padding:0;margin:0}.compact-brush .color-options button{width:28px;height:40px;min-height:40px;padding:4px}.compact-brush .color-options button span{width:20px;height:20px}.compact-brush:not(.palette-open) .color-options button:nth-child(n+4){display:none}.compact-brush .width-control{flex:1;min-width:60px;margin:0;gap:3px;height:40px}.compact-brush .width-control input{min-width:0;width:100%;height:36px}.compact-brush .width-control span{font-size:9px}.compact-brush .custom-color{display:none}.compact-brush.palette-open .custom-color{display:flex;order:7;width:100%;margin:0;padding:4px;justify-content:space-between}@media(min-width:768px){.compact-brush:not(.palette-open) .color-options button:nth-child(n+4){display:block}.compact-brush .color-options button{width:23px}}.dock-popover[data-direction=down] .popover-header button svg{transform:rotate(180deg)}.dock-popover[data-direction=left] .popover-header button svg{transform:rotate(-90deg)}.dock-popover[data-direction=right] .popover-header button svg{transform:rotate(90deg)}.compact-brush .brush-preview{display:block;width:24px;height:22px;padding:0;margin:0;background:none;flex:none}.toolbar .inline-submenu{flex:none;min-width:0;padding:2px 0}.toolbar .inline-submenu+.inline-submenu,.toolbar .inline-submenu+.record-controls{border-top:1px solid var(--border);padding-top:5px}.toolbar .add-popover .add-option,.toolbar .compact-brush button{height:40px;min-height:40px}.toolbar .compact-brush .color-options button{width:28px;padding:4px}.toolbar .compact-brush .current-ink{width:32px;padding:3px}.toolbar .inline-submenu .popover-header button{width:28px}.opens-down .inline-submenu .popover-header button svg{transform:rotate(180deg)}@media(min-width:768px){.toolbar .compact-brush .color-options button{width:23px}}.video-details{display:grid;gap:9px;font-size:13px;margin:16px 0;padding:14px;border:1px solid var(--border);border-radius:12px;background:var(--surface-muted)}.video-details>div{display:flex;justify-content:space-between;gap:12px;align-items:start}.video-details dt{color:var(--muted);flex:1}.video-details dd{margin:0;text-align:right;font-variant-numeric:tabular-nums;line-height:1.6}.video-canvas,.video-preview{display:block;width:100%;height:auto;max-height:28dvh;object-fit:contain;background:var(--surface-muted);border-radius:8px}.video-canvas[hidden]{display:none}.video-progress{display:flex;flex-direction:column;gap:8px;font-size:13px;font-variant-numeric:tabular-nums}.video-progress progress{width:100%;height:10px;accent-color:var(--accent)}.video-export-dialog .form-error{line-height:1.7}.share-video-option{display:flex;flex-direction:column;gap:8px;margin-top:12px;width:100%}.share-video-option>.secondary{width:100%;min-height:48px}.share-video-option>p{margin:0}.menu-list .record-entry-button[data-activity=idle]{background:transparent;color:var(--text)}.menu-list .record-entry-button[data-activity=idle] .record-entry-mark{color:inherit}.video-export-dialog .form-actions{flex-wrap:wrap}@media(prefers-reduced-transparency:reduce){.dock-anchor{background:var(--surface);-webkit-backdrop-filter:none;backdrop-filter:none}}