:root{color-scheme:dark;--bg:#05090e;--panel:#0b141c;--raised:#121f29;--text:#edf5f7;--muted:#9aabb2;--line:#293b46;--accent:#7de7eb;font-family:"Segoe UI Variable","PingFang SC","Microsoft YaHei",sans-serif;font-size:14px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-width:320px}button,input,textarea,select{font:inherit}button,select{cursor:pointer}button{border:1px solid var(--line);background:#111e27;color:var(--text);border-radius:7px;padding:9px 12px;min-height:38px;font-size:12px;font-weight:600;white-space:nowrap}button:hover{background:#1b303d;border-color:#577984}button.primary{background:var(--accent);border-color:var(--accent);color:#05252a}button.primary:hover{background:#a3f3f4}button:disabled{opacity:.4;cursor:not-allowed}button.danger{color:#ffc4c4;font-size:12px;padding:5px 9px;min-height:30px}input,textarea,select{background:#070f16;border:1px solid var(--line);color:var(--text);border-radius:6px;padding:9px 10px;width:100%;min-width:0}input:focus,textarea:focus,select:focus{border-color:var(--accent)}input[type=range]{accent-color:var(--accent);padding:0;min-height:26px;border:0}input[type=color]{height:37px;padding:3px;width:100%}input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent)}textarea{resize:vertical;line-height:1.65}label{display:block;font-size:12px;color:var(--muted);margin:13px 0 6px}label span{font-size:10px}label output{float:right;font-variant-numeric:tabular-nums;color:var(--text)}h1,h2,p{margin:0}h1{font-size:18px;font-weight:600;letter-spacing:.02em}h2{font-size:13px;font-weight:600}a{color:var(--accent)}[hidden]{display:none!important}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.skip{position:absolute;top:-80px;left:16px;z-index:10;background:var(--accent);color:#05252a;padding:12px}.skip:focus{top:8px}.app-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 28px;border-bottom:1px solid var(--line)}.identity{display:flex;align-items:center;gap:30px}.wordmark{font-size:21px;font-weight:750;letter-spacing:-.07em}.brand-cut{color:var(--accent);padding-left:5px}.identity p{font-size:11px;color:var(--muted);margin-top:5px}.header-actions{display:flex;align-items:center;gap:16px}.local-label{font-size:11px;color:var(--accent)}main{max-width:1840px;padding:20px 28px;margin:auto}.help{background:#0e1d27;padding:22px 28px;border-bottom:1px solid var(--line)}.help p{color:#bfccd2;font-size:13px;line-height:1.8;max-width:1100px;margin-top:10px}.toolbar{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.project-name{width:320px;max-width:100%}.project-name label{margin-top:0}.project-name input{background:transparent;font-size:15px;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:6px 0 9px}.toolbar-buttons{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.divider{height:20px;width:1px;background:var(--line);margin:0 4px}.workspace-grid{display:grid;grid-template-columns:230px minmax(320px,1fr) 272px;gap:16px;align-items:start}.panel{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden}.library,.inspector{padding:17px}.panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}.panel-title>span{font-size:11px;color:var(--muted)}.import-actions{display:grid;gap:7px}.import-actions button{text-align:left}.video-info{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:10px;line-height:1.6;margin:9px 0 20px;overflow-wrap:anywhere}.video-info button{padding:1px 6px;min-height:26px}.add-row{display:flex;gap:6px}.add-row select{font-size:12px;padding:8px}.card-list{margin-top:16px;display:grid;gap:6px;max-height:455px;overflow:auto;padding:2px}.card-item{display:grid;grid-template-columns:28px 1fr;text-align:left;white-space:normal;gap:9px;padding:12px 10px;font-weight:400;line-height:1.45;min-height:64px;width:100%;background:#0d1922}.card-item[aria-pressed=true]{border-color:var(--accent);background:#142c35}.card-number{font-family:monospace;color:var(--accent);font-size:11px;padding-top:1px}.card-item strong{display:block;font-size:12px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:145px}.card-item small{display:block;font-size:10px;color:var(--muted);margin-top:5px}.quiet{color:var(--muted);font-size:10px;line-height:1.7;margin-top:12px}.preview{padding-bottom:16px}.preview-bar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}.preview-bar>div{display:flex;align-items:center;gap:10px}.preview-bar label{margin:0}.preview-bar select{width:auto;font-size:11px;padding:6px}.stage-surround{padding:24px 18px;background:#070e14;display:flex;align-items:center;justify-content:center;min-height:280px}.stage{position:relative;width:100%;aspect-ratio:16/9;max-height:550px;background-color:#15212b;background-image:linear-gradient(45deg,#1b2a35 25%,transparent 25%),linear-gradient(-45deg,#1b2a35 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#1b2a35 75%),linear-gradient(-45deg,transparent 75%,#1b2a35 75%);background-size:28px 28px;background-position:0 0,0 14px,14px -14px,-14px 0;overflow:hidden;box-shadow:0 8px 32px #0006}.stage.vertical{width:auto;height:min(550px,65vh);max-width:100%;aspect-ratio:9/16}.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}.stage video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#000}.playback{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 16px 8px}.playback button{min-height:32px;padding:6px 10px;font-size:11px}#time-display{font-family:monospace;font-size:12px;color:#c6d6dd;margin-left:auto;font-variant-numeric:tabular-nums}.check{display:flex;gap:6px;align-items:center;margin:0 0 0 auto;white-space:nowrap;font-size:10px}.preview>#scrubber{display:block;width:calc(100% - 32px);margin:4px 16px}.timeline{position:relative;display:flex;flex-direction:column;gap:4px;min-height:40px;max-height:150px;overflow:auto;margin:8px 16px;background:repeating-linear-gradient(90deg,transparent 0,transparent calc(25% - 1px),#29404d 25%);padding:4px 0}.timeline-row{position:relative;min-height:22px;flex-shrink:0}.timeline-clip{position:absolute;min-height:22px;max-height:22px;min-width:5px;overflow:hidden;text-overflow:ellipsis;text-align:left;padding:2px 6px;font-size:9px;border-radius:4px;color:#cfedf0;border:1px solid #375d68;background:#20414d}.timeline-clip[aria-pressed=true]{border-color:var(--accent);background:#346575}.timeline-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 16px;color:var(--muted);font-size:10px}.timeline-meta label{margin:0;display:flex;align-items:center;gap:6px;font-size:10px}.timeline-meta input{width:70px;padding:5px;font-size:11px}fieldset{border:0;padding:0;margin:0;min-width:0}.inspector label:first-child{margin-top:0}.inspector select,.inspector input,.inspector textarea{font-size:12px}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}.two-cols label{margin-top:13px!important}.export-panel{margin-top:18px;padding:18px 22px}.export-heading{display:flex;align-items:baseline;gap:14px;margin-bottom:16px}.export-heading h2{font-size:15px}.export-heading p{color:var(--muted);font-size:11px}.export-actions{display:flex;align-items:end;gap:12px;flex-wrap:wrap}.range-fields{display:flex;gap:10px;flex-wrap:wrap}.range-fields label{display:flex;align-items:center;gap:6px;margin:0;font-size:11px}.range-fields input{width:80px}.range-fields select{width:92px}.export-panel progress{width:100%;accent-color:var(--accent);height:10px}.ai-brief{border-top:1px solid var(--line);margin-top:16px;padding-top:14px;font-size:12px;color:var(--muted)}summary{cursor:pointer;color:#c6d6dc}.ai-brief p{line-height:1.8;margin:12px 0;max-width:900px}.brief-actions{display:flex;gap:8px}.ai-brief textarea{font-size:12px;max-width:1000px}.status{border-left:2px solid var(--accent);background:#0e2029;padding:12px 16px;margin:16px 0 12px;font-size:12px;line-height:1.7;overflow-wrap:anywhere}.status.error{border-left-color:#ffadad;color:#ffd2d2;background:#261b20}footer{font-size:10px;color:var(--muted);text-align:center;padding:9px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(min-width:1600px){.workspace-grid{grid-template-columns:260px minmax(320px,1fr) 290px}.card-item strong{max-width:174px}.stage-surround{min-height:450px}}@media(max-width:1150px){main{padding:16px}.app-header{padding:16px}.workspace-grid{grid-template-columns:195px minmax(280px,1fr)}.inspector{grid-column:1/-1}.inspector fieldset{display:grid;grid-template-columns:repeat(3,1fr);gap:8px 16px}.inspector label{margin-top:8px}.inspector fieldset>label,.inspector fieldset>input,.inspector fieldset>select,.inspector fieldset>textarea,.inspector fieldset>.two-cols,.inspector fieldset>p{grid-column:1/-1}.inspector fieldset{display:block}.inspector #card-form{max-width:900px}.inspector .two-cols{max-width:500px}.card-item strong{max-width:115px}.stage-surround{padding:20px 12px}.export-actions{gap:8px}}@media(max-width:680px){.app-header{align-items:start;gap:10px}.identity{display:block}.wordmark{font-size:18px}.identity h1{font-size:16px;margin-top:10px}.identity p{display:none}.header-actions{display:block;text-align:right}.local-label{display:block;font-size:9px;margin-bottom:9px}.header-actions button{font-size:11px}.toolbar{align-items:start;flex-direction:column;gap:12px}.toolbar-buttons{gap:6px}.toolbar button{font-size:11px;padding:7px 9px}.project-name{width:100%}.workspace-grid{display:flex;flex-direction:column;gap:14px}.workspace-grid>*{width:100%}.preview{order:0}.library{order:1}.inspector{order:2}.stage-surround{min-height:190px}.stage.vertical{height:min(480px,65vh)}.card-list{grid-template-columns:repeat(2,minmax(0,1fr));max-height:220px}.card-item strong{max-width:calc(100vw / 2 - 100px)}.card-item{padding:9px 7px;gap:3px}.import-actions{grid-template-columns:1fr 1fr}.video-info{margin-bottom:12px}#time-display{font-size:10px}.check{font-size:9px;margin-left:0}.playback{gap:6px}.timeline-meta{flex-wrap:wrap}.export-panel{padding:16px}.export-heading{display:block}.export-heading p{margin-top:7px}.range-fields{order:2;width:100%}.range-fields input{width:70px}.range-fields select{width:85px}.export-actions{gap:10px}.export-actions>button{font-size:11px}.help{padding:18px 16px}footer{line-height:1.8}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
.back-link{display:inline-flex;align-items:center;min-height:40px;padding:7px 10px;color:var(--text,#edf5f7);font-size:12px;text-decoration:none;border:1px solid var(--line);border-radius:6px}.back-link:hover{border-color:var(--accent)}.back-link:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.ai-workspace{padding:18px 20px;margin-bottom:16px}.ai-workspace summary{font-size:15px;font-weight:600;min-height:28px}.ai-workspace textarea{width:100%;font-size:14px;line-height:1.7}.ai-controls{display:flex;align-items:end;gap:10px;flex-wrap:wrap;margin:12px 0}.ai-controls label{flex:1;min-width:180px}.ai-controls select{width:100%}.ai-jobs{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:12px}.ai-job{border-top:1px solid var(--line);padding:14px 0;min-width:0}.ai-job h3{font-size:14px}.ai-job p{font-size:13px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}.ai-job small{color:var(--muted)}#ai-notice{font-size:13px;line-height:1.7}
@media(max-width:680px){.header-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:5px;max-width:55%}.header-actions .local-label{display:none}.back-link{font-size:11px;padding:6px}.ai-workspace{padding:14px}.ai-workspace textarea,.ai-controls select{font-size:16px}.ai-controls button{min-height:44px}.ai-controls label{flex-basis:100%}}
:root .stage:not(.vertical){width:min(100%,977.7778px);max-height:none}
:root .stage.vertical{width:min(100%,309.375px,36.5625vh);height:auto;max-height:none}
@media(max-width:680px){:root .stage.vertical{width:min(100%,270px,36.5625vh)}}
.card-item{grid-template-columns:28px minmax(0,1fr)}
.card-item>span{min-width:0}
.card-item strong{max-width:100%}
#canvas{touch-action:none;user-select:none;-webkit-user-select:none;cursor:default}
#canvas.is-grabbable{cursor:grab}
#canvas.is-dragging{cursor:grabbing}
.selection-box{position:absolute;pointer-events:none;border:1px dashed #7de7eb;outline:1px solid #07131b;outline-offset:2px;z-index:2}
.selection-box>span{position:absolute;left:0;bottom:calc(100% + 5px);padding:3px 6px;background:#7de7eb;color:#05252a;white-space:nowrap;font-size:10px;line-height:1.4;border-radius:3px}
.is-dragging+.selection-box{border-style:solid}
.canvas-hint{font-size:10px;color:var(--muted);line-height:1.6;padding:10px 16px 0}
/* Range controls keep horizontal adjustment separate from vertical page scrolling. */
input[type=range]{touch-action:pan-y;min-height:44px}
.workspace-grid>*,.two-cols>*,.identity,.header-actions,.preview-bar>div,.video-info>span{min-width:0}
.output-options{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:18px}.output-options .check{margin:0;font-size:12px;min-height:44px}.watermark-label{display:flex;align-items:center;gap:8px;margin:0;max-width:100%}.watermark-label input{width:210px;max-width:100%}.overlay-exports{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);align-items:center}.overlay-exports>span{font-size:11px;color:var(--muted)}
@media(max-width:680px){.output-options{gap:10px}.watermark-label{width:100%;order:2}.watermark-label input{flex:1;min-width:0}.export-panel .export-actions>.range-fields{order:0}.export-panel .range-fields{margin-bottom:4px}.output-options input[type=text]{font-size:16px}.overlay-exports>span{width:100%}}
.card-list,.timeline{overscroll-behavior-y:contain;touch-action:pan-y}
.inspector input[type=range]{margin-inline:0}
.position-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}.position-actions button{min-height:44px;white-space:normal;flex:1 1 90px;font-size:11px;padding:7px 8px}.card-appearance{border-top:1px solid var(--line);margin-top:16px;padding-top:16px;min-width:0}.card-appearance h3{font-size:12px;font-weight:600;margin:0}.card-appearance .quiet{margin-top:2px}.card-appearance .two-cols{max-width:none}
.export-result{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,420px);gap:24px;align-items:start;padding-top:24px;margin-top:24px;border-top:1px solid var(--line)}
.workflow-resources{margin-top:20px;padding:22px;display:flex;gap:24px;align-items:center;justify-content:space-between}.workflow-resources>div{min-width:0}.workflow-resources h2{font-size:16px;line-height:1.6}.workflow-resources p{font-size:12px;color:var(--muted);line-height:1.8;margin-top:8px;max-width:650px}.workflow-resource-links{display:flex;flex-wrap:wrap;gap:10px}.workflow-resource-links a{display:flex;align-items:center;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:7px;font-size:12px;text-decoration:none;line-height:1.6}.workflow-resource-links a:hover{border-color:var(--accent);background:var(--raised)}@media(max-width:680px){.workflow-resources{display:block;padding:16px}.workflow-resource-links{margin-top:16px}.workflow-resource-links a{width:100%}}
.result-copy{min-width:0}.result-copy h3{font-size:16px;font-weight:600;margin:0 0 10px}.result-filename{color:var(--text);font-size:13px;line-height:1.6;overflow-wrap:anywhere}.result-copy .quiet{font-size:12px}
.result-state{font-size:12px;color:var(--accent);line-height:1.75;margin-top:16px}.result-state.is-stale{color:#f1cea1}
.result-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:18px}.result-actions>*{min-height:44px}.result-download{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border:1px solid var(--accent);border-radius:7px;color:#05252a;background:var(--accent);font-size:12px;font-weight:600;text-decoration:none}.result-download:hover{background:#a3f3f4}.result-download[aria-disabled=true]{pointer-events:none;opacity:.4}
#result-video{display:block;width:100%;max-height:480px;max-height:65dvh;object-fit:contain;background:#070e14;border-radius:6px}
@media(max-width:680px){.export-result{grid-template-columns:minmax(0,1fr);gap:18px;padding-top:20px;margin-top:20px}.result-actions>*{flex:1}.result-copy h3{font-size:16px}#result-video{max-height:460px;max-height:60dvh}}
@media(max-width:680px){
  main{padding:12px}.app-header{padding:14px 12px;gap:8px}
  .panel{max-width:100%}.library,.inspector{padding:14px}
  .two-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .preview-bar{padding:12px;gap:8px}.preview-bar>div{gap:6px}
  .stage-surround{padding:18px 10px}.canvas-hint{padding:10px 12px 0}
  .toolbar-buttons{width:100%}.divider{display:none}
  .playback button,.import-actions button,.add-row button,.export-actions>button{min-height:44px}
  .export-actions>button{white-space:normal}.export-heading p{line-height:1.7}
  .inspector input:not([type=range]):not([type=color]),.inspector textarea{font-size:16px}
  .selection-box>span{font-size:9px;max-width:100%;overflow:hidden;text-overflow:ellipsis}
}
.clip-editor{margin:10px 16px 14px;padding:14px;border:1px solid var(--line);border-radius:8px;background:#0e1c25}.clip-editor p{line-height:1.65}.clip-editor #media-duration-info{font-size:14px;font-weight:600;color:var(--accent)}.clip-buttons{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:10px 0}.clip-buttons label{display:flex;align-items:center;gap:8px;margin:0}.clip-buttons select{width:auto}.clip-editor button{white-space:normal}.clip-editor output,.clip-editor #clip-selection-info{font-size:12px;font-variant-numeric:tabular-nums}.clip-editor .two-cols label{min-width:0;margin-top:5px}.clip-editor .two-cols button{width:100%}.clip-editor .quiet{font-size:11px}.clip-editor .is-warning{color:#ffd19a!important}@media(max-width:680px){.clip-editor{padding:10px}.clip-editor input[type=number]{font-size:16px}.clip-editor .two-cols{gap:8px}.clip-buttons output{width:100%}}
.continuity-option{display:flex;align-items:flex-start;gap:8px;font-size:12px;line-height:1.7;padding:10px 0}.continuity-option input{flex:none;margin-top:2px}#local-join{padding:14px;border:1px solid var(--line);border-radius:8px;margin:14px 0}#local-join .ai-controls{margin:12px 0;gap:8px}#local-join .ai-controls span{flex:1 1 230px;overflow-wrap:anywhere}#local-join p{margin:12px 0;line-height:1.7}#local-join button{white-space:normal}