:root{--bg:#f7f7f8;--panel:#fff;--text:#1c1c1f;--muted:#6b6b76;--border:#e2e2e7;--accent:#0e7490;--off:#c2c2cc;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#141417;--panel:#1c1c21;--text:#e8e8ec;--muted:#9a9aa6;--border:#2e2e36;--accent:#22d3ee;--off:#4a4a55}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font:14px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}header{padding:16px 24px 0}h1{margin:0 0 4px;font-size:20px}h1 small{color:var(--muted);margin-left:8px;font-size:13px;font-weight:400}h2{margin:0 0 10px;font-size:15px}main{gap:16px;max-width:1200px;padding:16px 24px 48px;display:grid}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:14px 16px}.row{flex-wrap:wrap;align-items:center;gap:8px 16px;margin:6px 0;display:flex}.muted{color:var(--muted)}.mono{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12.5px}progress{width:100%;height:8px}button{padding:4px 12px}#seek{flex:1;min-width:200px}.preview{background:#000;border-radius:6px;position:relative;overflow:hidden}.preview canvas{z-index:1;object-fit:contain;width:100%;height:auto;max-height:70vh;display:block;position:relative}.preview video{object-fit:contain;pointer-events:none;width:100%;height:100%;position:absolute;inset:0}#tracks{flex-wrap:wrap;gap:8px;margin:8px 0 0;padding:0;list-style:none;display:flex}#tracks li{border:1px solid var(--border);cursor:pointer;border-radius:6px;align-items:center;gap:8px;padding:4px 8px 4px 4px;display:flex}#tracks li.off{opacity:.45}#tracks canvas{border-radius:4px;width:48px;height:48px}#tracks .meta{font-size:12px;line-height:1.3}#log{white-space:pre-wrap;max-height:220px;margin:0;font-size:12px;overflow:auto}