.lab-hero,
.lab-section {
  width: min(var(--container-wide), calc(100% - (var(--viewport-gutter) * 2)));
  margin: 0 auto;
}

.lab-hero {
  padding: clamp(1.5rem, 4vw, 3rem) 0 1rem;
}

.lab-hero .svc-kicker--light,
.lab-hero .svc-kicker--light a {
  color: var(--color-brand);
}

.lab-hub-hero .ai-cn-hero__inner {
  grid-template-columns: minmax(0, 42rem);
}

.lab-hero h1 {
  max-width: 16em;
  margin: 0 0 0.75rem;
  color: var(--color-ink);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.lab-lead,
.lab-section p,
.lab-note {
  max-width: 68ch;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.lab-hero__actions,
.lab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.lab-hero__actions .button,
.lab-actions .button,
.lab-bench button,
.lab-bench select,
.lab-bench input[type="text"] {
  min-height: 44px;
  cursor: pointer;
}

.lab-statuses {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.8rem 0 0;
  padding: 0;
  list-style: none;
}

.lab-pill {
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  color: var(--color-ink);
  background: var(--color-surface);
  font-size: 0.82rem;
  font-weight: 700;
}

.lab-pill--product { color: var(--color-brand-dark); background: var(--color-panel-soft); }
.lab-pill--browser { color: #1e3a8a; background: #eff6ff; }
.lab-pill--commission { color: #92400e; background: var(--color-notice); }
.lab-pill--research { color: var(--color-muted); }

.lab-section {
  padding: 1.5rem 0 2rem;
}

.lab-section h2 {
  margin: 0 0 0.8rem;
  color: var(--color-ink);
  font-size: clamp(1.3rem, 2vw, 1.7rem);
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.lab-card {
  display: block;
  min-height: 100%;
  padding: 1rem;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: var(--color-surface);
  color: inherit;
  text-decoration: none;
}

.lab-card:hover,
.lab-card:focus-visible {
  border-color: var(--color-brand);
}

.lab-card h3 { margin: 0.4rem 0; }
.lab-card p,
.lab-card span { color: var(--color-muted); }

.lab-bench {
  padding: 1rem;
  border-radius: 18px;
  background: #102a43;
  color: #e8eef7;
}

.lab-bench h2,
.lab-bench p,
.lab-bench label { color: #e8eef7; }
.lab-status { color: #fbd38d; }

.lab-bench canvas,
.lab-bench audio {
  width: min(100%, 960px);
  height: auto;
  background: #0b1b2e;
  border-radius: 12px;
}

.lab-meter {
  width: min(100%, 960px);
  height: 10px;
  margin: 0.6rem 0 1rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.lab-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--color-brand);
}

.lab-features,
.lab-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin: 0;
}

.lab-features div,
.lab-metrics div {
  padding: 0.75rem;
  border-radius: 12px;
  border: 1px solid var(--color-line);
  background: var(--color-paper);
}

.lab-features dt,
.lab-metrics dt {
  color: var(--color-muted);
  font-size: 0.8rem;
}

.lab-features dd,
.lab-metrics dd {
  margin: 0.25rem 0 0;
  color: var(--color-ink);
  font-weight: 700;
}

.lab-bench .lab-metrics div {
  border-color: transparent;
  background: rgba(255, 255, 255, 0.06);
}

.lab-bench .lab-metrics dt { color: #b9c6d9; }
.lab-bench .lab-metrics dd { color: #fff; }

.lab-params { padding-left: 1.2rem; }
.lab-check { display: flex; align-items: flex-start; gap: 0.5rem; max-width: 68ch; }
.lab-bench input[type="file"] { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.lab-bench :focus-visible,
.lab-card:focus-visible,
.lab-hero a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.lab-tuac .control-group {
  margin: 0.9rem 0;
  padding-top: 0.7rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.lab-tuac .slider-row,
.lab-tuac .lab-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 0.45rem 0;
}

.lab-tuac input[type="range"] { width: min(100%, 280px); }
.lab-tuac .status-bar { color: #fbd38d; }
.lab-tuac #radarCanvas,
.lab-tuac #elevCanvas {
  width: auto;
  background: #000;
}

@media (max-width: 640px) {
  .lab-hero h1 { font-size: 1.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  .lab-card { transition: none; }
}