.manual-hero {
  background:
    radial-gradient(circle at 82% 18%, var(--glow-screen), var(--color-transparent) 24rem),
    repeating-linear-gradient(96deg, var(--color-transparent) 0, var(--color-transparent) 42px, var(--wood-line) 43px, var(--color-transparent) 44px);
}

.manual-hero-copy {
  max-width: 940px;
  padding-top: clamp(24px, 5vw, 62px);
}

.manual-hero-copy h1 {
  max-width: 820px;
}

.manual-lead {
  max-width: 800px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 18px;
}

.manual-lead a {
  color: var(--color-accent-pale);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-dark);
  text-underline-offset: 0.22em;
}

.manual-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
}

.manual-body {
  background:
    linear-gradient(180deg, var(--color-transparent), var(--color-bg-soft) 8%, var(--color-bg-soft) 92%, var(--color-transparent));
}

.manual-layout {
  display: grid;
  grid-template-columns: minmax(190px, 240px) minmax(0, 1fr);
  align-items: start;
  gap: clamp(30px, 6vw, 78px);
}

.manual-rail {
  position: sticky;
  top: 24px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.manual-rail-title {
  margin-bottom: 15px;
  color: var(--color-accent-pale);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.manual-rail ol {
  display: grid;
  gap: 3px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.manual-rail a {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  min-height: 42px;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.45;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.manual-rail a:hover,
.manual-rail a:focus-visible {
  color: var(--color-text);
  background: var(--color-panel-raised);
}

.manual-rail span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
}

.manual-prose {
  max-width: 900px;
}

.manual-chapter {
  padding-bottom: clamp(62px, 9vw, 108px);
  scroll-margin-top: 28px;
}

.manual-chapter + .manual-chapter {
  padding-top: clamp(58px, 8vw, 92px);
  border-top: 1px solid var(--color-border-soft);
}

.manual-chapter h2 {
  max-width: 780px;
}

.manual-chapter h3 {
  margin-top: 2em;
}

.manual-chapter p {
  margin-bottom: 1.25em;
}

.manual-chapter .table-wrap {
  margin: 30px 0;
}

.manual-chapter pre {
  margin: 28px 0;
  box-shadow: var(--shadow-device);
}

.manual-checklist {
  margin: 30px 0;
  padding: clamp(22px, 4vw, 32px);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 100% 0, var(--glow-accent), var(--color-transparent) 14rem),
    var(--color-panel-raised);
}

.manual-checklist h3 {
  margin-top: 0;
}

.manual-checklist li {
  margin-bottom: 9px;
}

.manual-checklist li:last-child {
  margin-bottom: 0;
}

@media (max-width: 980px) {
  .manual-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .manual-rail {
    position: static;
  }

  .manual-rail ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .manual-lead {
    font-size: 16px;
  }

  .manual-rail ol {
    grid-template-columns: minmax(0, 1fr);
  }

  .manual-rail {
    padding: 14px;
  }

  .manual-chapter + .manual-chapter {
    padding-top: 58px;
  }

  .manual-checklist {
    border-radius: var(--radius-lg);
  }
}