.manual-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background:
    radial-gradient(ellipse at 82% 18%, var(--color-accent-faint), transparent 42%),
    linear-gradient(180deg, var(--color-bg), var(--color-panel));
}

.manual-hero::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(var(--color-border) 0.6px, transparent 0.6px);
  background-size: 7px 7px;
  opacity: 0.18;
  content: "";
}

.manual-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(390px, 0.95fr);
  gap: 3rem;
  align-items: center;
  min-height: 680px;
  padding-top: 72px;
  padding-bottom: 72px;
}

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

.manual-hero-copy .eyebrow {
  margin-top: 1.4rem;
}

.manual-hero-copy h1 {
  max-width: 12ch;
  margin-bottom: 0;
}

.manual-lead {
  max-width: 64ch;
  margin-top: 1.5rem;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.5vw, 1.13rem);
}

.manual-lead a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-dark);
  text-underline-offset: 0.2em;
}

.manual-actions {
  margin-top: 1.8rem;
}

.manual-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.manual-route-panel {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
  padding: 1.4rem;
}

.manual-route-panel::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent, var(--color-accent-soft), transparent),
    repeating-linear-gradient(0deg, transparent 0 30px, var(--color-table-stripe) 30px 31px);
  opacity: 0.58;
  content: "";
}

.manual-route-panel > * {
  position: relative;
  z-index: 1;
}

.manual-route-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.85rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.11em;
}

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

.manual-route-groove {
  fill: none;
  stroke: var(--color-border);
  stroke-linecap: round;
  stroke-width: 10;
}

.manual-route-line {
  fill: none;
  stroke: url("#guideCopper");
  stroke-linecap: round;
  stroke-width: 4;
  filter: drop-shadow(0 0 8px var(--color-accent-glow));
}

.manual-route-tick {
  stroke: var(--color-border-strong);
  stroke-width: 1;
}

.manual-route-terminal,
.manual-route-node {
  fill: var(--color-panel-raised);
  stroke: var(--color-accent);
  stroke-width: 2;
  filter: drop-shadow(0 0 7px var(--color-accent-glow));
}

.manual-route-core {
  fill: var(--color-accent);
  stroke: none;
}

.manual-route-labels {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  border-top: 1px solid var(--color-border);
  padding-top: 0.85rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}

.manual-article {
  position: relative;
  padding-top: 2rem;
  padding-bottom: var(--section-space);
}

.manual-article .toc-tabs {
  margin-bottom: 2.5rem;
}

.manual-chapter {
  position: relative;
  max-width: var(--content-reading);
  margin-inline: auto;
  padding-top: 4.5rem;
  padding-bottom: 1rem;
}

.manual-chapter + .manual-chapter {
  margin-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}

.chapter-code {
  margin-bottom: 0.8rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
}

.manual-chapter h2 {
  max-width: 20ch;
  margin-bottom: 2rem;
}

.manual-chapter h3 {
  position: relative;
  margin-top: 2.5rem;
  padding-left: 1rem;
}

.manual-chapter h3::before {
  position: absolute;
  top: 0.18em;
  bottom: 0.18em;
  left: 0;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-glow);
  content: "";
}

.manual-chapter p {
  color: var(--color-text-muted);
}

.manual-chapter p + p {
  margin-top: 1rem;
}

.manual-chapter pre,
.manual-chapter .table-scroll,
.manual-chapter .callout {
  margin-top: 1.7rem;
  margin-bottom: 1.7rem;
}

.manual-chapter pre {
  border-color: var(--color-border-strong);
  background: var(--color-panel-raised);
  color: var(--color-text);
}

.manual-chapter pre code {
  color: var(--color-text);
}

.manual-chapter .table-scroll {
  box-shadow: var(--shadow-card);
}

.manual-chapter .callout {
  color: var(--color-text-muted);
}

.manual-promo {
  max-width: var(--content-reading);
  margin: 5rem auto 0;
}

.manual-promo p {
  max-width: 62ch;
  color: var(--color-text-muted);
}

.manual-promo .button-row {
  margin-top: 1.5rem;
}

@media (max-width: 1050px) {
  .manual-hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .manual-route-panel {
    width: 100%;
    max-width: 720px;
  }

  .manual-route-svg {
    max-height: 430px;
  }
}

@media (max-width: 768px) {
  .manual-hero-grid {
    gap: 2.2rem;
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .manual-hero-copy h1 {
    max-width: none;
  }

  .manual-route-panel {
    padding: 1rem;
  }

  .manual-route-head {
    font-size: 0.6rem;
  }

  .manual-route-labels {
    flex-wrap: wrap;
  }

  .manual-chapter {
    padding-top: 3.5rem;
  }

  .manual-chapter + .manual-chapter {
    margin-top: 1.5rem;
  }

  .manual-chapter h2 {
    max-width: none;
  }

  .manual-promo {
    margin-top: 3.5rem;
  }
}

@media (max-width: 480px) {
  .manual-hero-grid {
    padding-top: 42px;
    padding-bottom: 42px;
  }

  .manual-route-head span:last-child {
    display: none;
  }

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

  .manual-chapter h3 {
    padding-left: 0.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .manual-route-line {
    filter: none;
  }
}