:root{color-scheme:dark;--bg: #0b0d10;--panel: #15181d;--panel-2: #1c2027;--text: #e8eaed;--muted: #8a93a0;--accent: #e15041;--green: #2ea043;--red: #f85149;--yellow: #d29922;font-family:-apple-system,BlinkMacSystemFont,Inter,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app{display:grid;grid-template-columns:320px 1fr;min-height:100vh}.sidebar{background:var(--panel);border-right:1px solid #222;padding:20px 0;overflow-y:auto}.sidebar h1{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 20px 12px}.session-list{list-style:none;margin:0;padding:0}.session-list li{padding:10px 20px;cursor:pointer;border-left:3px solid transparent;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12px}.session-list li:hover{background:var(--panel-2)}.session-list li.active{background:var(--panel-2);border-left-color:var(--accent)}.session-id{color:var(--text)}.session-meta{color:var(--muted);font-size:11px;margin-top:2px}.session-meta.has-master:before{content:"● ";color:var(--green)}.main{padding:24px;overflow-y:auto}.empty{color:var(--muted);text-align:center;padding:80px 20px}.player-wrap{background:#000;border-radius:6px;overflow:hidden;max-width:1280px;margin-bottom:16px}.player-wrap video{width:100%;display:block;background:#000}.player-overlay{position:relative}.audio-only-banner{position:absolute;top:12px;left:12px;background:#000000b3;border:1px solid var(--yellow);color:var(--yellow);padding:4px 10px;border-radius:4px;font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase}.session-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;max-width:1280px}.session-header h2{margin:0;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:16px;font-weight:500}.refresh-btn{background:transparent;border:1px solid #333;color:var(--muted);padding:4px 12px;border-radius:4px;cursor:pointer;font-size:12px}.refresh-btn:hover{color:var(--text);border-color:#555}.segment-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:4px;max-width:1280px}.segment-cell{aspect-ratio:1;border-radius:3px;display:flex;align-items:center;justify-content:center;font-size:10px;font-family:ui-monospace,SF Mono,Menlo,monospace;cursor:default;position:relative}.segment-cell.video{background:#2ea0432e;color:var(--green);border:1px solid rgba(46,160,67,.4)}.segment-cell.audio_only{background:#d299222e;color:var(--yellow);border:1px solid rgba(210,153,34,.4)}.segment-cell.unverified{background:#f851492e;color:var(--red);border:1px solid rgba(248,81,73,.5)}