.reference-hero {
  position: relative;
  overflow-x: clip;
  background: var(--color-canvas);
}

.reference-hero-glow {
  position: absolute;
  top: -140px;
  right: -160px;
  width: 680px;
  height: 680px;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-mint-glow) 0%, var(--color-sky-glow) 48%, var(--color-transparent) 72%);
  pointer-events: none;
}

.reference-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  align-items: center;
  gap: clamp(36px, 7vw, 88px);
}

.reference-hero-copy {
  max-width: 680px;
}

.reference-hero-copy .lead {
  margin-bottom: 26px;
}

.reference-map {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--gradient-brand);
  color: var(--color-ink);
  box-shadow: var(--shadow-tile);
}

.reference-map-head {
  display: flex;
  padding: 18px 22px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: var(--color-white-34);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.reference-map-tree {
  display: grid;
  margin: 0;
  padding: 24px;
  gap: 12px;
  list-style: none;
}

.reference-map-tree li {
  display: flex;
  min-width: 0;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-white-68);
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.reference-map-tree code {
  min-width: 0;
  padding: 0;
  overflow-wrap: anywhere;
  background: var(--color-transparent);
  font-size: 12px;
  font-weight: 700;
}

.reference-map-tree span {
  flex-shrink: 0;
  color: var(--color-ink-muted);
  font-size: 12px;
}

.reference-intro {
  margin-bottom: 32px;
}

.reference-intro h2 {
  font-size: clamp(25px, 3vw, 36px);
}

.reference-intro p:last-child {
  margin-bottom: 0;
}

.reference-toc {
  top: 12px;
}

.reference-prose {
  counter-reset: reference-section;
}

.reference-chapter {
  padding-top: 24px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-line);
}

.reference-chapter:last-child {
  border-bottom: 0;
}

.chapter-mark {
  display: inline-flex;
  margin-top: 36px;
  margin-bottom: 12px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-panel-mint);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.reference-chapter h2 {
  margin-top: 0;
}

.reference-chapter h3 {
  padding-left: 16px;
  border-left: 4px solid var(--color-mint);
}

.reference-chapter pre {
  margin-top: 28px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-raised);
}

.reference-chapter .table-wrap {
  margin-top: 30px;
  margin-bottom: 32px;
}

.reference-chapter .data-table {
  min-width: 720px;
}

.reference-chapter .callout {
  margin-top: 32px;
  margin-bottom: 32px;
}

@media (max-width: 900px) {
  .reference-hero-inner {
    grid-template-columns: 1fr;
  }

  .reference-map {
    max-width: 620px;
  }
}

@media (max-width: 640px) {
  .reference-hero-inner {
    gap: 38px;
  }

  .reference-map-tree {
    padding: 16px;
  }

  .reference-map-tree li {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .reference-map-tree span {
    flex-shrink: 1;
  }

  .reference-chapter {
    padding-bottom: 34px;
  }

  .chapter-mark {
    margin-top: 24px;
  }

  .reference-chapter h3 {
    padding-left: 12px;
  }
}