.manual-hero {
  position: relative;
  padding-top: clamp(54px, 8vw, 104px);
  padding-bottom: clamp(62px, 9vw, 116px);
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
}

.manual-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--color-line-soft) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-line-soft) 1px, var(--color-transparent) 1px),
    radial-gradient(circle at 78% 34%, var(--color-brand-glow), var(--color-transparent) 34%);
  background-size: 42px 42px, 42px 42px, auto;
  opacity: .58;
  pointer-events: none;
}

.manual-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
  gap: clamp(34px, 7vw, 88px);
  align-items: center;
}

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

.manual-kicker {
  margin-bottom: 22px;
}

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

.manual-lead {
  max-width: 720px;
  margin-bottom: 28px;
  color: var(--color-ink-muted);
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.72;
}

.manual-intro-links,
.manual-finish-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.manual-scope {
  max-width: 720px;
  margin-top: 25px;
  margin-bottom: 0;
  padding-top: 20px;
  color: var(--color-ink-muted);
  border-top: 1px solid var(--color-line);
  font-size: 14px;
}

.manual-scope a {
  color: var(--color-brand-strong);
  text-decoration: underline;
  text-underline-offset: .2em;
}

.manual-ledger {
  padding: clamp(22px, 4vw, 34px);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transform: rotate(1deg);
}

.ledger-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 13px;
  color: var(--color-ink-muted);
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
}

.ledger-list {
  margin: 0;
}

.ledger-list div {
  display: grid;
  grid-template-columns: minmax(62px, .35fr) minmax(0, 1fr);
  gap: 14px;
  padding-block: 14px;
  border-bottom: 1px dashed var(--color-line);
}

.ledger-list dt {
  color: var(--color-ink-muted);
  font-size: 13px;
}

.ledger-list dd {
  min-width: 0;
  margin: 0;
  font-size: 14px;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.manual-ledger > p {
  margin: 18px 0 0;
  color: var(--color-ink-muted);
  font-size: 13px;
}

.manual-document {
  padding-top: 28px;
  padding-bottom: var(--section-space);
}

.manual-document > .toc-tabs {
  top: 10px;
  margin-bottom: clamp(42px, 6vw, 72px);
}

.manual-layout {
  display: grid;
  grid-template-columns: minmax(0, 820px) minmax(230px, 300px);
  gap: clamp(34px, 6vw, 76px);
  align-items: start;
  justify-content: center;
}

.manual-prose {
  width: 100%;
}

.manual-chapter {
  padding-top: 20px;
  padding-bottom: clamp(62px, 8vw, 96px);
  border-bottom: 1px solid var(--color-line);
}

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

.manual-chapter:last-of-type {
  border-bottom: 0;
}

.chapter-label {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  margin-bottom: 14px;
  padding: 4px 11px;
  color: var(--color-brand-strong);
  background: var(--color-brand-soft);
  border: 1px solid var(--color-brand-border);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.manual-prose h2 {
  margin-top: 0;
}

.manual-prose h3 {
  margin-top: 2em;
  font-size: clamp(20px, 2.2vw, 25px);
}

.manual-prose p,
.manual-prose li {
  color: var(--color-ink-muted);
}

.manual-prose p {
  font-size: 16px;
  line-height: 1.92;
}

.manual-prose strong {
  color: var(--color-ink);
}

.manual-prose .table-scroll {
  margin-block: 32px;
}

.manual-prose table {
  font-size: 14px;
}

.manual-prose pre {
  margin-block: 30px;
  border: 1px solid var(--color-ink-muted);
  box-shadow: var(--shadow-soft);
}

.error-path {
  margin-block: 30px;
  padding: clamp(22px, 4vw, 32px);
  background: var(--color-surface-warm);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.error-path h3 {
  margin-top: 0;
}

.error-path ol {
  margin-bottom: 0;
}

.error-path li {
  margin-bottom: 15px;
}

.error-path li:last-child {
  margin-bottom: 0;
}

.manual-side {
  position: sticky;
  top: calc(var(--header-height) + 22px);
  display: grid;
  gap: 16px;
}

.manual-side-card {
  min-width: 0;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-control);
  box-shadow: var(--shadow-soft);
}

.manual-side-title {
  display: block;
  margin-bottom: 12px;
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 750;
}

.manual-side-card p {
  margin-bottom: 0;
  color: var(--color-ink-muted);
  font-size: 13px;
  line-height: 1.75;
}

.manual-side-card a {
  min-height: 39px;
  display: flex;
  align-items: center;
  color: var(--color-brand-strong);
  border-bottom: 1px solid var(--color-line);
  font-size: 13px;
}

.manual-side-card a:last-child {
  border-bottom: 0;
}

.manual-side-card a::after {
  content: "→";
  margin-left: auto;
  font-family: var(--font-mono);
}

.manual-finish {
  margin-top: 26px;
  padding: clamp(28px, 6vw, 52px);
  color: var(--color-surface-warm);
  background: var(--color-ink);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.manual-finish h2 {
  margin-top: 18px;
  color: var(--color-white);
}

.manual-finish p {
  max-width: 670px;
  color: var(--color-line);
}

.manual-finish .btn-primary {
  color: var(--color-brand-strong);
  background: var(--color-white);
}

.manual-finish .btn-secondary {
  color: var(--color-white);
  background: var(--color-transparent);
  border-color: var(--color-ink-muted);
}

.manual-finish .btn-secondary:hover {
  background: var(--color-ink-muted);
}

@media (max-width: 1040px) {
  .manual-hero-grid {
    grid-template-columns: 1fr;
  }

  .manual-ledger {
    width: 100%;
    max-width: 680px;
    transform: none;
  }

  .manual-layout {
    grid-template-columns: minmax(0, 820px);
  }

  .manual-side {
    position: static;
    grid-row: 1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .manual-hero {
    padding-top: 44px;
    padding-bottom: 66px;
  }

  .manual-hero::before {
    background-size: 34px 34px, 34px 34px, auto;
  }

  .manual-document {
    padding-top: 18px;
  }

  .manual-document > .toc-tabs {
    margin-bottom: 42px;
  }

  .manual-side {
    grid-template-columns: 1fr;
  }

  .manual-chapter {
    padding-bottom: 68px;
  }

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

@media (max-width: 640px) {
  .manual-intro-links,
  .manual-finish-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .manual-intro-links .btn,
  .manual-finish-actions .btn {
    width: 100%;
  }

  .manual-ledger {
    padding: 20px;
  }

  .ledger-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .ledger-list div {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .manual-finish {
    border-radius: var(--radius-control);
  }
}