*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#111;--panel-bg:#1a1a1a;--border:#333;--accent:#7c6af7;--accent-hover:#9b8dff;--text:#e0e0e0;--text-dim:#888;--input-bg:#252525;--panel-w:320px}html,body{background:var(--bg);height:100%;color:var(--text);font-family:Noto Sans SC,system-ui,sans-serif;font-size:14px}#app{flex-direction:column;height:100vh;display:flex;overflow:hidden}#main-row{flex:1;min-height:0;display:flex;overflow:hidden}#panel{width:var(--panel-w);min-width:var(--panel-w);background:var(--panel-bg);border-right:1px solid var(--border);flex-direction:column;gap:0;padding:16px;display:flex;overflow-y:auto}#panel h1{color:var(--accent);letter-spacing:.05em;margin-bottom:16px;font-size:16px;font-weight:700}.panel-section{border-bottom:1px solid var(--border);flex-direction:column;gap:8px;padding:12px 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4px;font-size:10px}.tl-clip-close:hover{color:#fff;background:#c0392b;border-color:#0000}.tl-drop-active{outline:2px dashed var(--accent);outline-offset:-2px;background:#7c6af714!important}.tl-clip--selected{outline-offset:-2px;outline:2px solid #4ec9c0}.tl-clip--drop-target{outline-offset:-2px;outline:2px solid #4ec9c0}.tl-clip--selected{box-shadow:0 0 0 1px #5ba3f5;border-color:#5ba3f5!important}.tl-clip--dragging{opacity:.35;pointer-events:none}.tl-drop-indicator{pointer-events:none;z-index:21;background:#5ba3f5;border-radius:2px;width:3px;position:absolute;top:3px;transform:translate(-1px)}.tl-clip-drag-ghost{pointer-events:none;z-index:20;background:#5ba3f559;border:2px dashed #5ba3f5;border-radius:4px;position:absolute;top:3px}#tl-playhead{z-index:10;pointer-events:none;background:#e74c3c;width:1px;position:absolute;top:0;bottom:0;left:0}#tl-playhead-handle{clip-path:polygon(0 0,100% 0,50% 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