.manual-hero {
  padding-top: 18px;
  padding-bottom: calc(var(--section-space) * .62);
}

.manual-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  min-height: 560px;
  overflow: hidden;
  border: var(--line-hair) solid var(--color-panel);
  border-radius: var(--radius-panel);
  background:
    radial-gradient(circle, var(--color-panel-dot) 1px, transparent 1.2px) 0 0 / 16px 16px,
    linear-gradient(var(--color-panel-grid) var(--line-hair), transparent var(--line-hair)) 0 0 / 80px 80px,
    linear-gradient(90deg, var(--color-panel-grid) var(--line-hair), transparent var(--line-hair)) 0 0 / 80px 80px,
    var(--color-panel);
}

.manual-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(36px, 5vw, 70px);
  border-right: var(--line-hair) solid var(--color-panel-line);
}

.manual-hero-copy .badge {
  margin-bottom: 25px;
  color: var(--color-panel-text);
  background: var(--color-panel-wash);
  border-color: var(--color-panel-line);
}

.manual-hero-copy .eyebrow {
  margin-bottom: 12px;
  color: var(--color-panel-muted);
}

.manual-hero-copy h1 {
  max-width: 650px;
  margin-bottom: 22px;
  color: var(--color-panel-text);
}

.manual-hero-copy .lead {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--color-panel-muted);
}

.manual-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 30px;
}

.manual-hero-actions .button-outline {
  color: var(--color-panel-text);
  border-color: var(--color-panel-line);
}

.manual-hero-actions .button-outline:hover {
  color: var(--color-panel);
  background: var(--color-page);
  border-color: var(--color-page);
}

.manual-fact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 35px;
  padding-top: 20px;
  border-top: var(--line-hair) solid var(--color-panel-line);
}

.manual-fact-line span {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  padding-inline: 11px;
  border: var(--line-hair) solid var(--color-panel-line);
  border-radius: var(--radius-control);
  color: var(--color-panel-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.manual-route-board {
  min-height: 560px;
  display: grid;
  place-items: center;
  padding: 30px;
  overflow: hidden;
}

.manual-route-board svg {
  width: 100%;
  height: auto;
}

.manual-grid-line {
  fill: none;
  stroke: var(--color-panel-grid);
  stroke-width: 1;
}

.manual-route-main {
  fill: none;
  stroke: var(--color-panel-text);
  stroke-width: 18;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.manual-route-branch {
  fill: none;
  stroke: var(--color-panel-muted);
  stroke-width: 4;
  stroke-linecap: round;
}

.manual-route-end {
  fill: var(--color-panel);
  stroke: var(--color-panel-text);
  stroke-width: 4;
}

.manual-route-node {
  fill: var(--color-panel-text);
  stroke: var(--color-panel);
  stroke-width: 4;
}

.manual-route-junction {
  fill: var(--color-accent);
  stroke: var(--color-panel);
  stroke-width: 6;
}

.manual-route-text {
  fill: var(--color-panel-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.manual-route-mark {
  fill: var(--color-panel-wash);
  font-family: var(--font-display);
  font-size: 120px;
  font-weight: 800;
}

.manual-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: 28px;
  align-items: start;
  padding-bottom: calc(var(--section-space) * .55);
}

.manual-intro-copy {
  max-width: 800px;
  color: var(--color-text-muted);
  font-size: 17px;
}

.manual-intro a,
.manual-body a {
  color: var(--color-accent-dark);
  font-weight: 680;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-soft);
  text-underline-offset: 3px;
}

.manual-intro a:hover,
.manual-body a:hover {
  color: var(--color-accent);
}

.manual-layout {
  display: grid;
  grid-template-columns: minmax(220px, 270px) minmax(0, 1fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: start;
  padding-bottom: var(--section-space);
}

.manual-index {
  position: sticky;
  top: var(--toc-top);
  min-width: 0;
}

.manual-index .mono-label {
  margin: 0 0 12px;
  color: var(--color-text-muted);
}

.manual-index .toc-tabs {
  align-items: stretch;
  flex-direction: column;
  border-radius: var(--radius-card);
}

.manual-index .toc-tabs a {
  width: 100%;
}

.manual-body {
  min-width: 0;
  max-width: 860px;
}

.manual-chapter {
  padding-top: 18px;
  padding-bottom: calc(var(--section-space) * .72);
  border-top: var(--line-hair) solid var(--color-border);
}

.manual-chapter:last-child {
  padding-bottom: 0;
}

.chapter-heading {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-bottom: 36px;
}

.chapter-number {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: var(--line-hair) solid var(--color-accent);
  border-radius: var(--radius-control);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.chapter-heading .eyebrow {
  margin: 2px 0 7px;
  color: var(--color-text-muted);
}

.chapter-heading h2 {
  margin-bottom: 0;
}

.manual-body h3 {
  margin-top: 42px;
  padding-top: 18px;
  border-top: var(--line-hair) solid var(--color-border);
}

.manual-body p,
.manual-body li {
  color: var(--color-text-muted);
}

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

.manual-body strong,
.manual-body th,
.manual-body td:first-child {
  color: var(--color-text);
}

.manual-body .callout {
  margin-top: 30px;
  margin-bottom: 34px;
}

.manual-body .callout p {
  margin-bottom: 0;
}

.manual-body pre {
  margin-top: 22px;
  margin-bottom: 24px;
}

.manual-body .route-table-wrap {
  margin-top: 28px;
  margin-bottom: 36px;
}

.manual-body .route-table td {
  color: var(--color-text-muted);
}

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

  .manual-hero-copy {
    min-height: 520px;
    border-right: 0;
    border-bottom: var(--line-hair) solid var(--color-panel-line);
  }

  .manual-route-board {
    min-height: 460px;
  }

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

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

  .manual-index {
    position: relative;
    top: auto;
  }

  .manual-index .toc-tabs {
    position: sticky;
    flex-direction: row;
    border-radius: var(--radius-control);
  }

  .manual-index .toc-tabs a {
    width: auto;
  }

  .manual-body {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .manual-hero {
    padding-top: 8px;
  }

  .manual-hero-grid {
    border-radius: var(--radius-panel);
  }

  .manual-hero-copy {
    min-height: 600px;
    padding: 34px 22px;
  }

  .manual-hero-actions {
    width: 100%;
  }

  .manual-hero-actions .button {
    flex: 1 1 130px;
  }

  .manual-fact-line {
    width: 100%;
  }

  .manual-route-board {
    min-height: 390px;
    padding: 16px;
  }

  .manual-intro-copy {
    font-size: 15px;
  }

  .manual-layout {
    gap: 40px;
  }

  .manual-index .mono-label {
    padding-inline: 2px;
  }

  .manual-chapter {
    padding-top: 14px;
    padding-bottom: 72px;
  }

  .chapter-heading {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 13px;
    margin-bottom: 30px;
  }

  .chapter-number {
    width: 42px;
    height: 42px;
    font-size: 10px;
  }

  .manual-body h3 {
    margin-top: 34px;
  }

  .manual-body .callout {
    padding: 20px;
  }
}