.manual-hero {
  position: relative;
  max-width: 100%;
  overflow-x: clip;
  padding-top: 72px;
  padding-bottom: 82px;
  background:
    var(--gradient-grid),
    var(--gradient-hero);
}

.manual-hero::before {
  position: absolute;
  top: -120px;
  right: -100px;
  width: 560px;
  max-width: 100%;
  height: 560px;
  border-radius: var(--radius-round);
  background: radial-gradient(closest-side, var(--color-accent-glow), transparent);
  content: "";
  pointer-events: none;
}

.manual-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 72px;
  align-items: center;
}

.manual-hero-copy {
  min-width: 0;
}

.manual-hero h1 {
  max-width: 720px;
  margin-bottom: 24px;
}

.manual-hero-lede {
  max-width: 680px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.75;
}

.manual-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.manual-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.manual-facts li {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 5px 11px;
  border-radius: var(--radius-sm);
  background: var(--color-white-soft);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.manual-index-panel {
  position: relative;
  min-width: 0;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  box-shadow:
    var(--shadow-tint),
    inset 0 0 0 1px var(--color-glass-strong);
  backdrop-filter: blur(14px);
}

.manual-index-panel::before {
  position: absolute;
  top: 0;
  right: 28px;
  left: 28px;
  height: 5px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background: var(--gradient-metal);
  content: "";
}

.manual-index-head {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.manual-index-track {
  display: grid;
  gap: 8px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.manual-index-track span {
  position: relative;
  display: flex;
  min-height: 42px;
  align-items: center;
  padding: 8px 14px 8px 34px;
  border-radius: var(--radius);
  background: var(--color-panel);
  font-weight: 700;
}

.manual-index-track span::before {
  position: absolute;
  left: 14px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  content: "";
  transform: rotate(45deg);
}

.manual-index-track span + span::after {
  position: absolute;
  bottom: 100%;
  left: 17px;
  width: 1px;
  height: 8px;
  background: var(--color-border);
  content: "";
}

.manual-index-terminal {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--color-text);
  box-shadow: var(--shadow-ink);
  color: var(--color-terminal-text);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.8;
}

.manual-index-terminal p {
  margin: 0;
}

.manual-section {
  position: relative;
}

.manual-article {
  max-width: calc(1040px + (var(--gutter) * 2));
}

.manual-intro {
  max-width: var(--reading-max);
  margin-right: auto;
  margin-bottom: 40px;
  margin-left: auto;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow:
    var(--shadow-tint),
    inset 0 0 0 1px var(--color-glass-strong);
}

.manual-intro .badge {
  margin-bottom: 18px;
}

.manual-intro p {
  font-size: 17px;
}

.manual-article > .toc-tabs {
  margin-bottom: 72px;
}

.manual-chapter {
  position: relative;
  max-width: var(--reading-max);
  margin-right: auto;
  margin-left: auto;
  padding-bottom: 80px;
}

.manual-chapter + .manual-chapter {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.manual-chapter h2 {
  margin-top: 10px;
}

.manual-chapter h3 {
  padding-left: 18px;
  border-left: 4px solid var(--color-accent);
}

.manual-chapter p,
.manual-chapter li {
  line-height: 1.85;
}

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

.manual-chapter .table-scroll {
  margin-top: 32px;
  margin-bottom: 32px;
}

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

.chapter-kicker {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  margin-bottom: 4px;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

@media (max-width: 960px) {
  .manual-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
  }

  .manual-index-panel {
    max-width: 680px;
  }
}

@media (max-width: 640px) {
  .manual-hero {
    padding-top: 48px;
    padding-bottom: 56px;
  }

  .manual-hero::before {
    right: 0;
    left: 0;
    width: auto;
    max-width: 100%;
  }

  .manual-hero-lede {
    font-size: 16px;
  }

  .manual-hero-links {
    align-items: stretch;
  }

  .manual-hero-links .btn {
    flex: 1 1 150px;
  }

  .manual-index-panel {
    padding: 18px;
  }

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

  .manual-facts li {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .manual-intro {
    padding: 24px 20px;
  }

  .manual-intro p {
    font-size: 16px;
  }

  .manual-article > .toc-tabs {
    margin-bottom: 52px;
  }

  .manual-chapter {
    padding-bottom: 64px;
  }

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