.manual-intro {
  background: var(--grad-panel);
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border);
}

.manual-heading {
  max-width: 850px;
}

.manual-heading h1 {
  margin-top: 18px;
  margin-bottom: 24px;
}

.manual-summary {
  font-family: var(--font-display);
  font-size: var(--size-h3);
  font-weight: var(--weight-strong);
  line-height: var(--leading-body);
}

.manual-heading .muted {
  max-width: 72ch;
  line-height: var(--leading-prose);
}

.manual-heading .fact-row {
  margin-top: 28px;
}

.manual-toc {
  margin-top: 36px;
}

.manual-body {
  padding-top: 16px;
  padding-bottom: var(--section-space);
}

.manual-chapter {
  display: grid;
  grid-template-columns: minmax(0, 180px) minmax(0, 1fr);
  gap: 32px;
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

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

.manual-chapter-label {
  padding-top: 8px;
}

.manual-chapter .prose {
  width: 100%;
}

.manual-chapter .prose > h2:first-child {
  margin-top: 0;
}

.manual-chapter .prose > :last-child {
  margin-bottom: 0;
}

.manual-chapter pre {
  font-size: var(--size-small);
}

@media (max-width: 960px) {
  .manual-chapter {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .manual-chapter-label {
    padding-top: 0;
  }

  .manual-chapter .prose {
    max-width: none;
  }
}

@media print {
  .manual-intro {
    background: var(--c-bg);
    color: var(--c-text);
  }

  .manual-chapter {
    display: block;
  }

  .manual-chapter-label {
    margin-bottom: 20px;
  }

  .manual-chapter h2,
  .manual-chapter h3 {
    break-after: avoid;
  }

  .manual-chapter .callout {
    break-inside: avoid;
  }
}