.manual-hero {
  position: relative;
  overflow-x: clip;
  padding-top: clamp(54px, 7vw, 96px);
  padding-bottom: clamp(64px, 8vw, 112px);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.manual-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-accent-line) 1px, transparent 1px);
  background-size: 22px 22px;
  content: "";
  opacity: .38;
}

.manual-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr);
  align-items: center;
  gap: clamp(42px, 7vw, 88px);
}

.manual-hero-copy {
  position: relative;
  z-index: 1;
}

.manual-hero h1 {
  max-width: 760px;
  margin-top: 22px;
}

.manual-hero .lead {
  margin-bottom: 0;
}

.manual-hero-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.manual-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 42px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.manual-facts li {
  display: flex;
  min-height: 58px;
  flex-direction: column;
  justify-content: center;
  padding-inline: 16px;
  border-right: 1px solid var(--color-border);
}

.manual-facts li:first-child {
  padding-left: 0;
}

.manual-facts li:last-child {
  border-right: 0;
}

.manual-facts strong {
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.3;
}

.manual-facts span {
  color: var(--color-muted);
  font-size: 12px;
}

.manual-route {
  position: relative;
  z-index: 1;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-bg);
}

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

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

.manual-route-back {
  fill: none;
  stroke: var(--color-muted);
  stroke-dasharray: 7 9;
  stroke-linecap: round;
  stroke-width: 2;
  opacity: .46;
}

.manual-route-front {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 8;
}

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

.manual-route-stop {
  fill: var(--color-bg);
  stroke: var(--color-accent);
  stroke-width: 5;
}

.manual-route-tag {
  fill: var(--color-text);
}

.manual-route-text {
  fill: var(--color-bg);
  font: 650 12px var(--font-body);
}

.manual-route-caption {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.manual-route-caption span {
  padding: 5px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-muted);
  font-size: 11px;
}

.manual-route-caption .mono {
  border-color: var(--color-accent-line);
  color: var(--color-accent-dark);
}

.handbook-shell {
  padding-top: clamp(62px, 8vw, 108px);
  padding-bottom: var(--section-space);
}

.manual-intro {
  max-width: var(--prose-max);
  margin-bottom: 30px;
}

.manual-intro p {
  font-size: 18px;
}

.manual-intro a,
.manual-chapter a {
  color: var(--color-accent-dark);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-line);
  text-underline-offset: 4px;
}

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

.handbook-shell .toc-tabs {
  margin-bottom: 0;
}

.manual-chapter {
  max-width: var(--prose-max);
  margin-inline: auto;
  padding-top: clamp(82px, 10vw, 132px);
}

.manual-chapter + .manual-chapter {
  margin-top: 16px;
  border-top: 1px solid var(--color-border);
}

.chapter-heading {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  margin-bottom: 42px;
}

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

.chapter-heading .eyebrow {
  margin-bottom: 12px;
}

.chapter-mark {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  margin-top: 5px;
  padding: 8px 12px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--color-accent-dark);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .06em;
}

.manual-chapter h3 {
  margin-top: 46px;
  font-size: clamp(22px, 2.5vw, 28px);
}

.manual-chapter p,
.manual-chapter li,
.manual-chapter td {
  line-height: 1.9;
}

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

.manual-chapter .table-scroll {
  margin-block: 34px;
}

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

.manual-checklist {
  margin-block: 36px;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

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

.manual-checklist ol {
  margin: 0;
  padding: 0;
  counter-reset: manual-step;
  list-style: none;
}

.manual-checklist li {
  position: relative;
  min-height: 42px;
  padding: 7px 0 7px 52px;
  counter-increment: manual-step;
  color: var(--color-muted);
}

.manual-checklist li::before {
  position: absolute;
  top: 7px;
  left: 0;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--color-accent-dark);
  content: counter(manual-step);
  font: 700 11px var(--font-mono);
}

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

  .manual-route {
    max-width: 680px;
  }
}

@media (max-width: 768px) {
  .manual-hero {
    padding-top: 46px;
    padding-bottom: 64px;
  }

  .manual-hero-grid {
    gap: 40px;
  }

  .manual-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .manual-facts li {
    padding: 14px;
    border-bottom: 1px solid var(--color-border);
  }

  .manual-facts li:first-child {
    padding-left: 14px;
  }

  .manual-facts li:nth-child(even) {
    border-right: 0;
  }

  .manual-facts li:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .manual-route {
    padding: 18px;
    border-radius: var(--radius-lg);
  }

  .handbook-shell {
    padding-top: 58px;
  }

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

  .manual-chapter {
    padding-top: 82px;
  }

  .chapter-heading {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .chapter-mark {
    width: max-content;
  }
}

@media (max-width: 520px) {
  .manual-hero-links .btn {
    width: 100%;
  }

  .manual-route-caption span {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .manual-chapter h3 {
    margin-top: 38px;
  }

  .manual-checklist li {
    padding-left: 46px;
  }
}