/* ============================================================
   Lab page (Lab.html) — cross-disciplinary experiments.
   ============================================================ */

.lab-hero {
  text-align: center;
  margin-bottom: 40px;
}

.lab h1 {
  font-family: var(--font-display);
  font-size: 2.4em;
  color: var(--heading);
  margin: 0 0 10px;
}

.lab-subtitle {
  font-family: var(--font-accent);
  font-size: 1.1em;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}

/* ── Intro ─────────────────────────────────────────────────── */
.lab-intro p {
  font-size: 18px;
  line-height: 1.85;
  margin: 0 0 18px;
}

.lab-lead {
  font-weight: 600;
  color: var(--heading);
}

/* ── Experiment cards ──────────────────────────────────────── */
.lab-experiments {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 34px 0 44px;
}

.lab-card {
  position: relative;
  background: rgba(173, 149, 134, 0.08);
  border: 1px solid rgba(173, 149, 134, 0.25);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 28px 30px;
}

.lab-card__num {
  display: block;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9em;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.lab-card h2 {
  font-family: var(--font-accent);
  font-size: 1.25em;
  color: var(--heading);
  margin: 0 0 14px;
}

/* Second heading in a card = English subtitle (lighter, uppercase) */
.lab-card h2 + h2 {
  font-size: 0.78em;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: -10px 0 16px;
}

.lab-card p {
  font-size: 16px;
  line-height: 1.9;
  margin: 0;
}

/* ── Project links inside a card ───────────────────────────── */
.lab-links {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid rgba(173, 149, 134, 0.25);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lab-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  background: #fff;
  border: 1px solid rgba(173, 149, 134, 0.3);
  border-radius: 8px;
  padding: 12px 14px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.lab-link:hover {
  background: rgba(173, 149, 134, 0.12);
  border-color: var(--accent);
  transform: translateX(4px);
}

.lab-link__arrow {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 1.1em;
  line-height: 1;
}

.lab-link__body {
  flex: 1 1 auto;
  min-width: 0;
}

.lab-link__title {
  display: block;
  font-family: var(--font-accent);
  font-weight: 700;
  color: var(--heading);
}

.lab-link__meta {
  display: block;
  font-size: 0.85em;
  color: var(--muted);
  margin-top: 2px;
}

.lab-link__go {
  flex: 0 0 auto;
  color: var(--accent);
  font-weight: 700;
  transition: transform 0.2s;
}

.lab-link:hover .lab-link__go {
  transform: translateX(3px);
}

/* Placeholder shown until a section has linked experiments */
.lab-soon {
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid rgba(173, 149, 134, 0.25);
  font-size: 0.9em;
  font-style: italic;
  color: var(--muted);
}

/* ── Closing statement ─────────────────────────────────────── */
.lab-closing {
  text-align: center;
  border-top: 1px solid rgba(173, 149, 134, 0.25);
  padding-top: 34px;
}

.lab-closing .zh {
  font-family: var(--font-display);
  font-size: 1.35em;
  font-weight: 700;
  color: var(--brown);
  margin: 0 0 6px;
}

.lab-closing .en {
  font-family: var(--font-accent);
  font-size: 1.05em;
  font-style: italic;
  color: var(--muted);
  margin: 0;
}

/* ── Mobile ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .lab-experiments {
    grid-template-columns: 1fr;
    gap: 18px;
    margin: 26px 0 34px;
  }

  .lab h1 { font-size: 2em; }
  .lab-card { padding: 22px 20px; }
}