.manual-intro {
  padding-top: 78px;
  padding-bottom: 58px;
}

.manual-intro h1 {
  max-width: 780px;
  margin-bottom: 22px;
}

.manual-intro .lead {
  max-width: 780px;
}

.manual-intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.manual-relation {
  margin-top: 38px;
}

.manual-relation a,
.manual-body a:not(.button) {
  color: var(--color-brand-deep);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.manual-toc-wrap {
  position: relative;
  z-index: 12;
}

.manual-body {
  padding-top: 76px;
}

.manual-chapter {
  position: relative;
  scroll-margin-top: 92px;
  padding-top: 86px;
  padding-bottom: 22px;
}

.manual-chapter:first-child {
  padding-top: 0;
}

.manual-chapter + .manual-chapter {
  border-top: 1px solid var(--color-line);
}

.chapter-number {
  margin-bottom: 12px;
  color: var(--color-brand);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.manual-chapter h2 {
  margin-bottom: 34px;
}

.manual-chapter h3 {
  margin-top: 44px;
  margin-bottom: 14px;
  font-size: clamp(20px, 2vw, 25px);
}

.manual-chapter p {
  color: var(--color-ink);
  line-height: 1.9;
}

.manual-chapter p + p {
  margin-top: 18px;
}

.manual-chapter .callout,
.manual-chapter .data-table,
.manual-chapter pre {
  margin-top: 30px;
  margin-bottom: 30px;
}

.manual-chapter .callout p {
  color: var(--color-ink-muted);
}

.manual-chapter .data-table {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}

.manual-chapter .data-table table {
  min-width: 650px;
}

.manual-chapter .data-table th {
  font-size: 14px;
}

.manual-chapter .data-table td {
  color: var(--color-ink-muted);
  font-size: 14px;
}

.manual-chapter code {
  color: var(--color-brand-deep);
}

.manual-chapter pre code {
  color: var(--color-ink);
}

.manual-chapter .download-end-card {
  margin-bottom: 18px;
}

@media (max-width: 768px) {
  .manual-intro {
    padding-top: 48px;
    padding-bottom: 44px;
  }

  .manual-body {
    padding-top: 54px;
  }

  .manual-chapter {
    scroll-margin-top: 80px;
    padding-top: 68px;
  }

  .manual-chapter h2 {
    margin-bottom: 28px;
  }

  .manual-chapter h3 {
    margin-top: 36px;
  }
}

@media (max-width: 640px) {
  .manual-intro-actions,
  .manual-intro-actions .button {
    width: 100%;
  }

  .manual-toc-wrap {
    padding-inline: var(--gutter);
  }

  .manual-chapter p {
    line-height: 1.82;
  }

  .manual-chapter .callout {
    padding: 20px 20px 20px 46px;
  }

  .manual-chapter .callout::before {
    left: 19px;
  }
}