/* ==========================================================================
   Features page
   ========================================================================== */

.page-hero {
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(2rem, 4vw, 4rem);
  text-align: center;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0.5rem auto 1.5rem;
  max-width: 18ch;
}
.page-hero p.lead {
  margin: 0 auto;
  font-size: 1.2rem;
  color: var(--text-secondary);
}

/* ──────────────────────────────────────────────────────────────────────────
   Feature index — TOC
   ────────────────────────────────────────────────────────────────────────── */
.feature-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.5rem;
  margin: 3rem 0 5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}
.feature-index a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: background var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out);
}
.feature-index a:hover {
  background: var(--bg-hover);
  color: var(--accent-teal);
}
.feature-index a .num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ──────────────────────────────────────────────────────────────────────────
   Deep-dive feature section
   ────────────────────────────────────────────────────────────────────────── */
.feature-section {
  padding: clamp(3rem, 6vw, 5rem) 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 100px;
}
.feature-section:last-of-type { border-bottom: none; }

.feature-section-head {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  align-items: flex-start;
}
.feature-section-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-teal);
  background: rgba(94, 234, 212, 0.08);
  border: 1px solid rgba(94, 234, 212, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-top: 0.5rem;
  flex-shrink: 0;
}
.feature-section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  margin: 0;
  line-height: 1.1;
}

.feature-section-body {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: flex-start;
}
@media (max-width: 880px) {
  .feature-section-body { grid-template-columns: 1fr; }
}

.feature-section-text > p {
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0 0 1.25rem;
}
.feature-section-text > p:first-child {
  color: var(--text-primary);
  font-size: 1.15rem;
}

.feature-section-bullets {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.85rem;
}
.feature-section-bullets li {
  display: flex;
  gap: 0.85rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 0.85rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.feature-section-bullets li strong {
  color: var(--text-primary);
  font-weight: 600;
  margin-right: 0.25rem;
}
.feature-section-bullets li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.65em;
  border-radius: 50%;
  background: var(--accent-teal);
  box-shadow: 0 0 8px var(--accent-teal);
}

/* Feature visual frame on the right */
.feature-visual {
  position: sticky;
  top: 100px;
}
@media (max-width: 880px) {
  .feature-visual { position: static; }
}

/* ──────────────────────────────────────────────────────────────────────────
   Stats inside feature sections
   ────────────────────────────────────────────────────────────────────────── */
.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}
.metric {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}
.metric-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}
.metric-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.4rem;
}