:root {
  --bg: #f6f5f1; --card: #ffffff; --ink: #1d1f23; --muted: #646a73; --line: #e3e1da;
  --accent: #c2410c; --accent-ink: #ffffff; --accent-soft: #fde7da; --ok: #15803d; --warn: #b45309;
  --s-vad: #94a3b8; --s-lid: #7c3aed; --s-enc: #c2410c; --s-dec: #0e7490; --s-mt: #15803d;
  --radius: 10px; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121316; --card: #1b1d21; --ink: #ecebe7; --muted: #9aa0a8; --line: #2c2f35;
    --accent: #fb923c; --accent-ink: #1b1d21; --accent-soft: #3a2417; --ok: #4ade80; --warn: #fbbf24;
    --s-vad: #64748b; --s-lid: #a78bfa; --s-enc: #fb923c; --s-dec: #22d3ee; --s-mt: #4ade80;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.top { border-bottom: 1px solid var(--line); background: var(--card); }
.top .wrap { display: flex; gap: 16px; justify-content: space-between; align-items: center; flex-wrap: wrap; padding-top: 18px; padding-bottom: 16px; }
h1 { margin: 0; font-size: 22px; letter-spacing: -0.015em; font-weight: 650; }
h1 span { font-weight: 400; color: var(--muted); }
.lede { margin: 6px 0 0; max-width: 620px; color: var(--muted); }
.lede strong { color: var(--ink); }
.pills { font-size: 12.5px; color: var(--muted); font-family: var(--mono); }
.pill { border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 20px; padding-top: 20px; padding-bottom: 20px; }
@media (max-width: 900px) { .grid { grid-template-columns: minmax(0, 1fr); } .sticky { position: static !important; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 20px; }
.card[aria-disabled="true"] { opacity: 0.55; }
.sticky { position: sticky; top: 16px; }
h2 { margin: 0 0 6px; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.step { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 700; }
.hint { color: var(--muted); margin: 0 0 12px; }
.hint.small { font-size: 12.5px; margin-top: 10px; }
code { font-family: var(--mono); font-size: 0.92em; }
.langs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.lang { position: relative; }
.lang input { position: absolute; opacity: 0; }
.lang span { display: inline-block; padding: 4px 11px; border: 1px solid var(--line); border-radius: 6px; cursor: pointer; user-select: none; font-size: 14px; }
.lang input:checked + span { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 60%, transparent); color: var(--ink); }
.lang input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.row { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 14px; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
select { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; }
button, .button { font: inherit; font-size: 14px; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 7px; padding: 7px 13px; cursor: pointer; }
button:hover:not(:disabled), .button:hover { border-color: var(--muted); }
button:disabled, .button.disabled { opacity: 0.5; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button.ghost { background: transparent; }
button.recording { background: #dc2626; border-color: #dc2626; color: #fff; }
.download { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.download b { color: var(--ink); }
.loading { margin-top: 12px; }
.bar { height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar > div { height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }
.loadtext { font-size: 12.5px; color: var(--muted); margin-top: 6px; font-family: var(--mono); }
.controls { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 14px; }
.vad { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.meter { flex: 1; height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; }
.meter > div { height: 100%; width: 0; background: var(--s-vad); transition: width 0.08s; }
.meter > div.speech { background: var(--accent); }
.vadstate { min-width: 92px; text-align: right; font-family: var(--mono); font-size: 12px; }
audio { width: 100%; margin-top: 12px; }
.segments { display: flex; flex-direction: column; gap: 10px; }
.empty { color: var(--muted); margin: 0; }
.seg { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.seg .meta { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.chip { --c: var(--accent); background: color-mix(in srgb, var(--c) 14%, transparent); color: var(--c); border-radius: 6px; padding: 1px 7px; font-weight: 600; white-space: nowrap; }
.flag { color: var(--warn); }
.seg .text { font-size: 16.5px; }
.seg .tr { color: var(--muted); margin-top: 2px; }
.tbar { display: flex; height: 6px; border-radius: 99px; overflow: hidden; margin-top: 8px; background: var(--line); }
.tbar > i { display: block; height: 100%; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: 11.5px; color: var(--muted); margin-top: 4px; }
.legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }
.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.kpi { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.kpi .v { font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.kpi .l { font-size: 12px; color: var(--muted); }
table.models { width: 100%; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
table.models th { text-align: left; font-weight: 500; color: var(--muted); border-bottom: 1px solid var(--line); padding: 4px 0; }
table.models td { padding: 4px 0; border-bottom: 1px solid var(--line); }
table.models th:not(:first-child), table.models td:not(:first-child) { text-align: right; padding-left: 12px; white-space: nowrap; }
.facts { margin-top: 12px; font-size: 13px; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.facts .zero { color: var(--ok); font-weight: 600; }
.foot { color: var(--muted); font-size: 12px; padding-bottom: 28px; }

/* setup row */
.row { align-items: flex-end; }
.loadbox { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.loadbox .download { margin: 0; }
.langs { margin-bottom: 12px; }
#setup .row { margin-bottom: 0; }

/* tabs */
.tabs { display: flex; gap: 4px; margin: 0 0 12px; border-bottom: 1px solid var(--line); }
.tab { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 12px; color: var(--muted); font-weight: 550; }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.controls { align-items: center; margin: 0 0 12px; }
.controls .vad { flex: 1; min-width: 160px; }
.segments { margin-top: 12px; }
.seg .ref { font-size: 13px; color: var(--muted); margin-top: 4px; }
.seg .ref span { font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; margin-right: 4px; }
.seg .tbar { margin-top: 8px; }

/* language test */
.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 14px 0; }
.summary > div { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.summary b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; }
.summary small { color: var(--muted); font-size: 12px; }
.timeline { margin: 6px 0 14px; }
.tl-row { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.tl-name { width: 64px; flex: none; font-size: 12px; color: var(--muted); }
.tl-track { position: relative; flex: 1; height: 28px; background: var(--bg); border-radius: 8px; }
.tl-track i { position: absolute; top: 3px; bottom: 3px; border-radius: 6px; font-style: normal; font-size: 11px; font-weight: 650;
  display: grid; place-items: center; overflow: hidden; color: var(--c); background: color-mix(in srgb, var(--c) 16%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); }
.vad-svg { flex: 1; height: 64px; background: var(--bg); border-radius: 8px; }
.vad-line { fill: none; stroke: var(--accent); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.vad-th { stroke: var(--muted); stroke-dasharray: 4 4; stroke-width: 1; vector-effect: non-scaling-stroke; }
.vad-th.low { opacity: 0.5; }
.vad-span { fill: color-mix(in srgb, var(--accent) 12%, transparent); }
.tl-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-left: 74px; font-size: 11.5px; color: var(--muted); }
.sw { display: inline-block; width: 14px; height: 8px; margin-right: 5px; vertical-align: middle; border-radius: 2px; }
.sw.line { height: 2px; background: var(--accent); }
.sw.th { height: 0; border-top: 1px dashed var(--muted); }
.sw.span { background: color-mix(in srgb, var(--accent) 18%, transparent); }
.tl-ticks { position: relative; height: 14px; margin-left: 74px; font-size: 10.5px; color: var(--muted); }
.tl-ticks span { position: absolute; transform: translateX(-50%); }
.table-wrap { overflow-x: auto; }
.lidtable { width: 100%; border-collapse: collapse; font-size: 13px; }
.lidtable th { text-align: left; color: var(--muted); font-weight: 500; border-bottom: 1px solid var(--line); padding: 5px 8px 5px 0; white-space: nowrap; }
.lidtable td { border-bottom: 1px solid var(--line); padding: 5px 8px 5px 0; white-space: nowrap; }
.lidtable td.clip { white-space: normal; min-width: 180px; }
.mono { font-family: var(--mono); font-size: 12px; }

/* diagrams */
.d-h { font-size: 14px; margin: 4px 0 6px; }
.diagram { width: 100%; height: auto; display: block; margin-bottom: 14px; }
.d-box rect { fill: var(--bg); stroke: var(--line); stroke-width: 1.2; }
.d-box.accent rect { fill: color-mix(in srgb, var(--accent) 10%, var(--card)); stroke: color-mix(in srgb, var(--accent) 55%, transparent); }
.d-box.good rect { fill: color-mix(in srgb, var(--ok) 10%, var(--card)); stroke: color-mix(in srgb, var(--ok) 50%, transparent); }
.d-box.muted rect { fill: var(--card); stroke-dasharray: 4 3; }
.d-title { text-anchor: middle; font-size: 13px; font-weight: 650; fill: var(--ink); }
.d-sub { text-anchor: middle; font-size: 10.5px; fill: var(--muted); }
.d-live { text-anchor: middle; font-size: 11px; font-weight: 600; fill: var(--accent); font-variant-numeric: tabular-nums; }
.d-arrow { fill: none; stroke: var(--muted); stroke-width: 1.4; }
.d-arrow.dash { stroke-dasharray: 4 3; }
.d-head { fill: var(--muted); }
.d-label { font-size: 11px; fill: var(--muted); text-anchor: middle; }
.d-label.small { font-size: 10px; }
.d-frame { fill: none; stroke: color-mix(in srgb, var(--accent) 50%, transparent); stroke-width: 1.4; stroke-dasharray: 6 4; }
.d-frame-label { font-size: 12px; font-weight: 650; fill: var(--accent); }
.d-no path { stroke: var(--muted); stroke-width: 1.4; fill: none; stroke-dasharray: 3 3; }
.d-no .d-x { stroke: #dc2626; stroke-width: 2.4; stroke-dasharray: none; }
.zero { color: var(--ok); }
.device-note { margin: 10px 0 0; }
.d-label.end { text-anchor: end; }
.d-sub.note { font-style: italic; }