:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--neutral-background-1:#fff;--neutral-background-2:#f9fafb;--neutral-background-3:#fff;--neutral-foreground-1:#171717;--neutral-foreground-2:#4b5563;--neutral-foreground-3:#5f6773;--disabled-foreground:#9298a1;--neutral-stroke-1:#d1d5db;--neutral-stroke-2:#e5e7eb;--subtle-stroke:#f0f1f3;--selection-background:#ededed;--selection-foreground:#171717;--brand-background:#f79fb9;--brand-background-hover:#f9b4c9;--brand-background-pressed:#ed8daa;--brand-background-2:#fceef3;--brand-foreground:#a1325a;--brand-stroke:#d66b94;--on-brand:#fff;--danger-foreground:#b4233c;--danger-background:#fff1f2;--preview-background:#171717;--preview-foreground:#fff;--clip-background:#f7f1f4;--clip-border:#e5d8df;--clip-selected:#e4e4e7;--clip-selected-border:#71717a;--playhead:#ac3863;--waveform:#b64b72;--binding-stroke:#b84c75;--scrollbar:#d1d5db;--font-base:"Segoe UI Variable Text", "Segoe UI", -apple-system, "Microsoft YaHei UI", "Noto Sans SC", system-ui, sans-serif;--font-mono:"Cascadia Mono", Consolas, ui-monospace, monospace;--text-caption:12px;--text-body:13px;--text-title:22px;--text-hero:30px;--space-4:4px;--space-8:8px;--space-12:12px;--space-16:16px;--space-20:20px;--space-24:24px;--space-32:32px;--control-height:36px;--radius-control:8px;--radius-surface:12px;--radius-hero:16px;--radius-clip:6px;--shadow-surface:0 8px 28px #00000024}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--neutral-background-1:#161616;--neutral-background-2:#111;--neutral-background-3:#0a0a0a;--neutral-foreground-1:#ededed;--neutral-foreground-2:#c4c4c4;--neutral-foreground-3:#a0a0a0;--disabled-foreground:#757575;--neutral-stroke-1:#4a4a4a;--neutral-stroke-2:#2e2e2e;--subtle-stroke:#242424;--selection-background:#303030;--selection-foreground:#ededed;--brand-background-2:#302029;--brand-foreground:#f79fb9;--danger-foreground:#fda4af;--danger-background:#32191e;--preview-background:#080808;--preview-foreground:#ededed;--clip-background:#262126;--clip-border:#45373f;--clip-selected:#3f3f43;--clip-selected-border:#a1a1aa;--playhead:#f2a0bd;--waveform:#f4a7c2;--binding-stroke:#f4a7c2;--scrollbar:#4a4a4a;--shadow-surface:0 8px 28px #0000008c}}*{box-sizing:border-box}[hidden]{display:none!important}html,body{width:100%;min-width:0;height:100%;margin:0}body{background:var(--neutral-background-3);color:var(--neutral-foreground-1);font:var(--text-body) / 1.5 var(--font-base);overflow:hidden}button{font:inherit;cursor:pointer}button:disabled{cursor:not-allowed}.ri-icon{fill:currentColor;pointer-events:none;flex:none;width:18px;height:18px;display:block}.ri-icon-large{width:28px;height:28px}#app{width:100%;min-width:0;height:100%;grid-template-rows:56px minmax(120px,1fr) minmax(0,auto) 36px;height:100dvh;min-height:0;display:grid;overflow:hidden}.command-header{min-width:0;padding:0 var(--space-24);border-bottom:1px solid var(--neutral-stroke-2);grid-row:1;justify-content:space-between;align-items:center;display:flex}.brand{flex:none;align-items:center;display:flex}.brand img{width:48px;height:48px}.command-actions{align-items:center;gap:var(--space-8);min-width:0;display:flex}.command-actions>:last-child{margin-right:0}.more-menu-wrap{position:relative}.more-menu{z-index:100;border:1px solid var(--neutral-stroke-2);border-radius:var(--radius-control);background:var(--neutral-background-1);width:max-content;min-width:224px;box-shadow:var(--shadow-surface);padding:4px;position:absolute;top:calc(100% + 6px);right:0}.more-menu-item{width:100%;min-height:36px;color:var(--neutral-foreground-1);text-align:left;background:0 0;border:0;border-radius:6px;align-items:center;gap:10px;padding:0 10px;display:flex}.more-menu-item:hover:not(:disabled),.more-menu-item:focus-visible{background:var(--selection-background);outline:none}.more-menu-item:disabled{color:var(--disabled-foreground)}.more-menu-divider{background:var(--neutral-stroke-2);height:1px;margin:4px 8px}.menu-shortcut{color:var(--neutral-foreground-3);font-size:var(--text-caption);margin-left:auto;padding-left:20px}.more-menu-item:disabled .menu-shortcut{color:var(--disabled-foreground)}.clip-context-menu{z-index:300;border:1px solid var(--neutral-stroke-2);border-radius:var(--radius-control);background:var(--neutral-background-1);width:232px;box-shadow:var(--shadow-surface);padding:6px;position:fixed}.clip-context-heading{color:var(--neutral-foreground-2);font-size:var(--text-caption);justify-content:space-between;align-items:center;padding:7px 8px 9px;font-weight:600;display:flex}.clip-context-value{color:var(--brand-foreground);font-family:var(--font-mono)}.speed-preset-grid{grid-template-columns:repeat(3,1fr);gap:4px;display:grid}.speed-preset{min-height:34px;color:var(--neutral-foreground-1);font-family:var(--font-mono);font-size:var(--text-caption);background:0 0;border:1px solid #0000;border-radius:6px;padding:0 4px}.speed-preset:hover,.speed-preset:focus-visible{background:var(--selection-background);outline:none}.speed-preset[aria-checked=true]{border-color:var(--brand-stroke);background:var(--brand-background-2);color:var(--brand-foreground);font-weight:700}.speed-input-row{align-items:center;gap:var(--space-8);grid-template-columns:1fr auto;display:grid}.speed-input-row span{color:var(--neutral-foreground-2);font:16px var(--font-mono)}.btn{justify-content:center;align-items:center;gap:var(--space-8);min-height:var(--control-height);padding:0 var(--space-16);border:1px solid var(--neutral-stroke-2);border-radius:var(--radius-control);background:var(--neutral-background-1);color:var(--neutral-foreground-1);transition:background .12s,border-color .12s;display:inline-flex}.btn:hover:not(:disabled){background:var(--neutral-background-2);border-color:var(--neutral-stroke-1)}.btn:active:not(:disabled){background:var(--selection-background)}.btn:disabled{color:var(--disabled-foreground)}.btn-primary{background:var(--brand-background);border-color:var(--brand-background);color:var(--on-brand);font-weight:600}.btn-primary:hover:not(:disabled){background:var(--brand-background-hover);border-color:var(--brand-background-hover)}.btn-primary:active:not(:disabled){background:var(--brand-background-pressed);border-color:var(--brand-background-pressed)}.btn-primary:disabled{background:var(--neutral-stroke-2);border-color:var(--neutral-stroke-2);color:var(--disabled-foreground)}.btn-icon{width:var(--control-height);min-height:var(--control-height);background:0 0;border-color:#0000;padding:0}.btn-quiet{background:0 0;border-color:#0000}.btn-quiet:hover:not(:disabled){background:var(--neutral-background-2);border-color:#0000}.btn-danger{border-color:color-mix(in srgb, var(--danger-foreground) 38%, transparent);background:var(--danger-background);color:var(--danger-foreground);font-weight:600}.btn-danger:hover:not(:disabled){border-color:var(--danger-foreground);background:color-mix(in srgb, var(--danger-foreground) 16%, var(--danger-background))}:focus-visible{outline:2px solid var(--brand-stroke);outline-offset:1px}.preview-region{background:var(--neutral-background-1);grid-row:2;grid-template-rows:1fr auto;min-width:0;min-height:0;display:grid;position:relative}.preview-region.is-empty,.preview-region.is-empty .preview-canvas{background:#fff}.preview-region.is-empty .empty-state{color:#4b5563}.preview-region.is-empty .empty-state h1{color:#171717}.preview-region.is-empty .empty-badge{color:#a1325a;background:#fceef3}.preview-region.is-empty .keycap{color:#171717;background:#f9fafb;border-color:#e5e7eb}.preview-canvas{background:var(--preview-background);overscroll-behavior:contain;touch-action:none;place-items:center;min-height:0;display:grid;position:relative;overflow:hidden}.preview-frame{background:var(--preview-background);width:100%;height:100%;transform:scale(var(--preview-zoom,1));transform-origin:50%;will-change:transform;transition:transform 90ms ease-out;position:absolute;inset:0}.subtitle-overlay{z-index:4;box-sizing:border-box;color:#fff;cursor:move;touch-action:none;background:#0a0a0a14;border:1.5px solid #ffffffeb;justify-content:center;align-items:flex-end;padding:8px;display:flex;position:absolute;box-shadow:0 0 0 1px #0009,0 8px 24px #00000038}.subtitle-overlay[data-alignment=top]{align-items:flex-start}.subtitle-overlay[data-alignment=center]{align-items:center}.subtitle-overlay[data-alignment=bottom]{align-items:flex-end}.subtitle-preview-text{text-align:center;text-wrap:balance;white-space:pre-wrap;overflow-wrap:anywhere;text-shadow:0 1px 3px #000,0 0 8px #000c;pointer-events:none;width:100%;font-size:clamp(14px,2vw,28px);font-weight:650;line-height:1.25;overflow:visible}.subtitle-resize-handle{background:#fff;border:1px solid #000000a6;border-radius:2px;width:11px;height:11px;min-height:0;padding:0;position:absolute}.subtitle-resize-handle.nw{cursor:nwse-resize;top:-6px;left:-6px}.subtitle-resize-handle.ne{cursor:nesw-resize;top:-6px;right:-6px}.subtitle-resize-handle.sw{cursor:nesw-resize;bottom:-6px;left:-6px}.subtitle-resize-handle.se{cursor:nwse-resize;bottom:-6px;right:-6px}.subtitle-snap-guide{z-index:3;pointer-events:none;background:#ff3b81;position:absolute;box-shadow:0 0 0 1px #00000040}.subtitle-snap-guide.horizontal{height:1px}.subtitle-snap-guide.vertical{width:1px}.danger-menu-item{color:var(--danger-foreground)}.audio-preview{z-index:1;justify-items:center;gap:var(--space-8);max-width:min(420px,100% - 48px);color:var(--preview-foreground);text-align:center;display:grid;position:relative}.audio-preview:before{z-index:-1;background:radial-gradient(circle, color-mix(in srgb, var(--brand-background) 18%, transparent), transparent 68%);content:"";border-radius:50%;position:absolute;inset:-56px -88px}.audio-preview strong{max-width:100%;font-size:var(--text-title);text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.audio-preview>span{color:color-mix(in srgb, var(--preview-foreground) 68%, transparent);font-size:var(--text-caption)}.audio-preview-mark{width:72px;height:72px;margin-bottom:var(--space-8);border:1px solid color-mix(in srgb, var(--brand-background) 55%, transparent);background:color-mix(in srgb, var(--brand-background-2) 70%, transparent);border-radius:22px;justify-content:center;align-items:center;gap:5px;display:flex;box-shadow:0 14px 44px #0000003d}.audio-preview-mark span{background:var(--brand-background);border-radius:999px;width:4px;height:24px;animation:1.4s ease-in-out infinite audio-preview-pulse}.audio-preview-mark span:nth-child(2),.audio-preview-mark span:nth-child(4){height:36px;animation-delay:-.35s}.audio-preview-mark span:nth-child(3){height:46px;animation-delay:-.7s}@keyframes audio-preview-pulse{0%,to{opacity:.7;transform:scaleY(.55)}50%{opacity:1;transform:scaleY(1)}}.preview-decoder{opacity:0;clip-path:inset(50%);pointer-events:none;width:2px;height:2px;position:absolute;top:0;left:0}.empty-state{justify-items:center;gap:var(--space-12);width:100%;min-width:0;max-width:440px;padding:var(--space-24);color:var(--neutral-foreground-2);text-align:center;display:grid}.empty-state h1{color:var(--neutral-foreground-1);font-size:var(--text-hero);margin:0;font-weight:600}.empty-badge{border-radius:var(--radius-hero);background:var(--brand-background-2);width:64px;height:64px;color:var(--brand-foreground);place-items:center;display:grid}@media (prefers-reduced-motion:reduce){.preview-frame{transition:none}.audio-preview-mark span{animation:none}}.keycap{padding:2px var(--space-8);border:1px solid var(--neutral-stroke-2);background:var(--neutral-background-2);font:var(--text-caption) / 1.6 var(--font-mono);border-radius:6px}.preview-footer{align-items:center;gap:var(--space-12);min-width:0;min-height:64px;padding:0 var(--space-20);border-top:1px solid var(--neutral-stroke-2);grid-template-columns:1fr auto 1fr;display:grid}.timecode{color:var(--brand-foreground);font:600 var(--text-body) / 1 var(--font-mono);font-variant-numeric:tabular-nums}.timecode.total{color:var(--neutral-foreground-2);font-weight:400}.playback-controls{align-items:center;gap:var(--space-12);display:flex}.btn-play{background:var(--brand-background);border-color:var(--brand-background);width:44px;height:44px;min-height:44px;color:var(--on-brand);border-radius:999px;font-size:16px}.btn-play:hover:not(:disabled){background:var(--brand-background-hover);border-color:var(--brand-background-hover)}.footer-hint{justify-content:flex-end;align-items:center;gap:var(--space-8);color:var(--neutral-foreground-3);font-size:var(--text-caption);display:flex}.timeline-region{border-top:1px solid var(--neutral-stroke-2);border-bottom:1px solid var(--neutral-stroke-2);background:var(--neutral-background-1);grid-row:3;grid-template-rows:auto minmax(0,1fr) auto;min-width:0;min-height:0;max-height:420px;display:grid;overflow:hidden}.timeline-toolbar{justify-content:space-between;align-items:center;gap:var(--space-16);min-width:0;padding:var(--space-8) var(--space-24);border-bottom:1px solid var(--neutral-stroke-2);display:flex}.timeline-tools{align-items:center;gap:var(--space-8);min-width:0;display:flex}.btn-compact{min-height:30px;padding:5px 10px}#multi-select-button[aria-pressed=true]{border-color:var(--brand-stroke);background:var(--brand-background-2);color:var(--brand-foreground)}.timeline-region.is-multi-select #timeline{cursor:cell}.section-title{margin-right:var(--space-12);font-weight:600}.divider{width:1px;height:16px;margin:0 var(--space-4);background:var(--neutral-stroke-2)}.timeline-scroll{-webkit-tap-highlight-color:transparent;width:100%;min-width:0;min-height:0;max-height:340px;overflow:auto}#timeline{cursor:pointer;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;min-width:100%;display:block}.timeline-summary{padding:var(--space-4) var(--space-24) var(--space-8);color:var(--neutral-foreground-3);font-size:var(--text-caption)}.status-bar{align-items:center;gap:var(--space-16);min-width:0;padding:0 var(--space-24);color:var(--neutral-foreground-3);font-size:var(--text-caption);grid-row:4;display:flex}.status-text{white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;overflow:hidden}.capability-text{text-align:right;flex:0 auto;max-width:52%}.progress{background:var(--neutral-stroke-2);appearance:none;border:none;border-radius:999px;width:160px;height:4px}.progress::-webkit-progress-bar{background:var(--neutral-stroke-2);border-radius:999px}.progress::-webkit-progress-value{background:var(--brand-background);border-radius:999px}.progress::-moz-progress-bar{background:var(--brand-background);border-radius:999px}dialog{border:1px solid var(--neutral-stroke-2);border-radius:var(--radius-surface);background:var(--neutral-background-3);width:min(540px,100vw - 32px);color:var(--neutral-foreground-1);box-shadow:var(--shadow-surface);padding:0}dialog::backdrop{background:#0000006b}.dialog-header{padding:var(--space-24) var(--space-24) var(--space-16);justify-content:space-between;align-items:center;display:flex}.dialog-header h2{font-size:var(--text-title);margin:0;font-weight:600}.badge{border-radius:var(--radius-control);background:var(--brand-background-2);color:var(--brand-foreground);font-size:var(--text-caption);padding:5px 10px;font-weight:600}.dialog-body{gap:var(--space-16);max-height:min(62vh,520px);padding:0 var(--space-24) var(--space-24);display:grid;overflow:auto}.field{gap:var(--space-8);display:grid}.field>label{color:var(--neutral-foreground-2);font-weight:600}select,input[type=number],input[type=text]{min-height:var(--control-height);padding:0 var(--space-12);border:1px solid var(--neutral-stroke-1);border-radius:var(--radius-control);background:var(--neutral-background-1);color:var(--neutral-foreground-1);font:inherit}.dimension-row{align-items:end;gap:var(--space-12);grid-template-columns:1fr auto 1fr;display:grid}.hint{color:var(--neutral-foreground-3);font-size:var(--text-caption)}.callout{padding:var(--space-12);border-radius:var(--radius-control);font-size:var(--text-caption);white-space:pre-wrap;border:1px solid #0000}.callout.info{background:var(--brand-background-2);color:var(--brand-foreground)}.callout.warn{background:var(--danger-background);color:var(--danger-foreground)}.callout code{font-family:var(--font-mono)}.dialog-footer{justify-content:space-between;align-items:center;gap:var(--space-12);padding:var(--space-16) var(--space-24);border-top:1px solid var(--neutral-stroke-2);display:flex}.dialog-footer .actions{gap:var(--space-8);display:flex}.capability-list{margin:0;padding-left:18px}.recovery-header{align-items:flex-start}.eyebrow{margin-bottom:var(--space-4);color:var(--brand-foreground);letter-spacing:.12em;text-transform:uppercase;font-size:11px;font-weight:700;display:block}.danger-eyebrow{color:var(--danger-foreground)}.recovery-copy{color:var(--neutral-foreground-2);margin:0;font-size:14px;line-height:1.7}.recovery-files{border:1px solid var(--neutral-stroke-2);border-radius:var(--radius-control);background:var(--neutral-background-1);overflow:hidden}.recovery-files-label{padding:var(--space-8) var(--space-12);border-bottom:1px solid var(--neutral-stroke-2);color:var(--neutral-foreground-3);letter-spacing:.08em;text-transform:uppercase;font-size:11px;font-weight:700}.recovery-files ul{background:var(--neutral-stroke-2);gap:1px;margin:0;padding:0;list-style:none;display:grid}.recovery-file{align-items:center;gap:var(--space-12);min-height:42px;padding:var(--space-8) var(--space-12);background:var(--neutral-background-1);grid-template-columns:minmax(0,1fr) auto;display:grid}.recovery-file-name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.recovery-file-state{color:var(--neutral-foreground-3);font-size:var(--text-caption)}.recovery-file.is-ready .recovery-file-state{color:var(--brand-foreground);font-weight:600}.recovery-footer .actions{flex:none}.drop-overlay{background:color-mix(in srgb, var(--brand-background) 22%, transparent);border:3px dashed var(--brand-stroke);color:var(--neutral-foreground-1);font-size:var(--text-hero);pointer-events:none;z-index:50;place-items:center;font-weight:600;display:grid;position:fixed;inset:0}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:720px){:root{--control-height:44px}#app{grid-template-rows:56px minmax(140px,1fr) minmax(0,auto) 40px}.command-header{gap:var(--space-8);padding:0 var(--space-8)}.brand img{width:44px;height:44px}.command-actions{gap:var(--space-4);flex:0 auto}.command-actions .btn{padding-inline:var(--space-12)}.empty-state{gap:var(--space-8);max-width:360px;padding:var(--space-16)}.empty-state h1{font-size:24px}.empty-state p{margin:var(--space-4) 0}.empty-shortcut .keycap{display:none}.preview-footer{gap:var(--space-4);min-height:56px;padding:0 var(--space-8);grid-template-columns:minmax(0,1fr) auto}.preview-footer>:first-child{min-width:0}.timecode{white-space:nowrap;text-overflow:ellipsis;font-size:11px;line-height:1.25;display:block;overflow:hidden}.timecode.total{margin-top:3px}.playback-controls{gap:var(--space-4)}.btn-play{width:44px;height:44px}.footer-hint{display:none}.timeline-region{max-height:min(42dvh,320px)}.timeline-toolbar{justify-content:flex-start;gap:var(--space-4);padding:var(--space-4) var(--space-8);overscroll-behavior-x:contain;scrollbar-width:none;touch-action:pan-x;overflow-x:auto}.timeline-toolbar::-webkit-scrollbar{display:none}.timeline-tools{gap:var(--space-4);flex:none}.section-title{margin-right:var(--space-4)}.timeline-summary{padding:var(--space-4) var(--space-12) var(--space-8)}.status-bar{gap:var(--space-8);padding:0 var(--space-12)}.capability-text{display:none}.progress{flex:0 0 88px;width:88px}dialog{border-width:1px 0 0;border-radius:18px 18px 0 0;width:100%;max-width:none;max-height:calc(100dvh - 12px);margin:0;inset:auto 0 0}dialog>form{flex-direction:column;max-height:calc(100dvh - 12px);display:flex}.dialog-header{padding:var(--space-20) var(--space-16) var(--space-12);flex:none}.dialog-body{max-height:none;padding:0 var(--space-16) var(--space-16);flex:auto}.dialog-footer{padding:var(--space-12) var(--space-16) max(var(--space-12), env(safe-area-inset-bottom));flex:none}.dialog-footer>.hint{display:none}.dialog-footer .actions{width:100%}.dialog-footer .actions .btn{flex:1}.dimension-row{gap:var(--space-8)}}@media (max-width:480px){#import-button{width:var(--control-height);padding:0}#import-button .btn-label,.section-title,.divider{display:none}}@media (max-width:900px) and (max-height:520px){:root{--control-height:40px}#app{grid-template-rows:48px minmax(90px,1fr) minmax(0,auto) 32px}.command-header{padding-inline:var(--space-8)}.brand img{width:40px;height:40px}.empty-state{gap:var(--space-4);padding:var(--space-8)}.empty-badge,.empty-shortcut{display:none}.preview-footer{min-height:48px}.timeline-region{max-height:min(46dvh,220px)}.timeline-toolbar{padding:var(--space-4) var(--space-8);justify-content:flex-start;overflow-x:auto}.capability-text{display:none}.status-bar{padding-inline:var(--space-8)}}