:root {
  --bg: #0e0f12; --panel: #17191e; --line: #2a2d35; --fg: #f3f1ec; --dim: #9a9ca3; --accent: #f6821f; --ok: #3ccf8e; --warn: #f2c94c; --err: #ff6b6b;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; background: var(--bg); color: var(--fg); font-family: var(--sans); }
body { display: flex; flex-direction: column; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 22px; border-bottom: 1px solid var(--line); }
header h1 { font-size: 15px; font-weight: 600; letter-spacing: .02em; display: flex; align-items: center; gap: 10px; }
header h1 i { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); }
.meta { display: flex; align-items: center; gap: 14px; font-family: var(--mono); font-size: 12px; color: var(--dim); }
.pill { padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; }
.pill.live { color: var(--ok); border-color: color-mix(in oklab, var(--ok) 40%, transparent); }
.pill.starting { color: var(--warn); }
.pill.error { color: var(--err); }
button, select, input { font: inherit; color: var(--fg); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; }
button { cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: #111; font-weight: 600; }
button:disabled { opacity: .5; cursor: default; }
main { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
#captions { flex: 1; overflow-y: auto; padding: 28px clamp(18px, 5vw, 80px) 40px; display: flex; flex-direction: column; justify-content: flex-end; gap: 22px; scroll-behavior: smooth; }
.cap .src { color: var(--dim); font-size: clamp(16px, 1.6vw, 22px); line-height: 1.5; }
.cap .tr { margin-top: 4px; font-size: clamp(24px, 3vw, 44px); line-height: 1.35; font-weight: 600; }
.cap.live .src { color: var(--fg); opacity: .65; font-style: italic; }
body.big .cap .tr { font-size: clamp(32px, 4.6vw, 64px); }
body.no-src .cap .src { display: none; }
body.no-src .cap.live { display: none; }
.dots { color: var(--accent); margin-left: 4px; }
.empty { color: var(--dim); font-size: 20px; text-align: center; margin: auto; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.panel { padding: 14px 22px; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.panel label { font-size: 13px; color: var(--dim); }
.hint { font-size: 13px; color: var(--dim); }
meter { width: 120px; height: 10px; }