.manual-hero {
  position: relative;
  min-height: 670px;
  padding-top: clamp(94px, 12vw, 150px);
  padding-bottom: 86px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-accent-14);
  background:
    linear-gradient(90deg, var(--color-bg-heavy), var(--color-transparent) 62%),
    repeating-linear-gradient(
      0deg,
      var(--color-transparent) 0,
      var(--color-transparent) 5px,
      var(--color-accent-03) 6px
    ),
    radial-gradient(circle at 78% 58%, var(--color-accent-14), var(--color-transparent) 25%),
    var(--color-bg);
}

.manual-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background:
    linear-gradient(118deg, var(--color-transparent) 45%, var(--color-accent-05) 45.2%, var(--color-transparent) 45.5%),
    linear-gradient(62deg, var(--color-transparent) 58%, var(--color-accent-05) 58.2%, var(--color-transparent) 58.5%);
}

.manual-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  align-items: center;
  gap: clamp(38px, 7vw, 94px);
}

.manual-hero-copy {
  position: relative;
  z-index: 3;
}

.manual-hero h1 {
  max-width: 760px;
  font-size: clamp(48px, 5.4vw, 72px);
  text-shadow: 0 16px 44px var(--color-shadow);
}

.manual-lead {
  max-width: 680px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 17px;
}

.manual-facts {
  margin-top: 24px;
}

.manual-map {
  position: relative;
  min-height: 480px;
  padding: 28px;
  border-top: 1px solid var(--color-accent-48);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background:
    repeating-linear-gradient(
      90deg,
      var(--color-transparent) 0,
      var(--color-transparent) 39px,
      var(--color-accent-05) 40px
    ),
    repeating-linear-gradient(
      0deg,
      var(--color-transparent) 0,
      var(--color-transparent) 39px,
      var(--color-accent-05) 40px
    ),
    var(--color-panel-deep);
  box-shadow: var(--shadow-panel), var(--shadow-glow);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.manual-map::after {
  position: absolute;
  top: 0;
  right: 28px;
  width: 86px;
  height: 2px;
  content: "";
  background: var(--color-warn);
  box-shadow: var(--shadow-warn);
}

.manual-map-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.manual-map svg {
  width: 100%;
  margin-top: 10px;
  color: var(--color-accent);
}

.map-line {
  fill: none;
  stroke: currentColor;
}

.map-line-soft {
  stroke-width: 1;
  opacity: 0.18;
}

.map-line-mid {
  stroke-width: 1.4;
  opacity: 0.42;
}

.map-line-bright {
  stroke-width: 2.4;
  opacity: 0.86;
}

.map-node-soft {
  fill: var(--color-bg-panel);
  stroke: currentColor;
  stroke-width: 2;
  opacity: 0.72;
}

.map-node-ring {
  fill: var(--color-bg-panel);
  stroke: currentColor;
  stroke-width: 2;
}

.map-node-core {
  fill: currentColor;
}

.manual-map-rail {
  position: absolute;
  top: 58px;
  right: 18px;
  display: grid;
  gap: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-align: right;
}

.manual-map-note {
  position: absolute;
  right: 28px;
  bottom: 25px;
  left: 28px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 3px 13px;
  padding-top: 15px;
  border-top: 1px solid var(--color-accent-18);
}

.manual-map-note span {
  grid-row: span 2;
  padding: 5px 8px;
  border: 1px solid var(--color-warn-35);
  background: var(--color-warn-10);
  color: var(--color-warn);
  font-family: var(--font-mono);
  font-size: 9px;
}

.manual-map-note strong {
  font-size: 14px;
}

.manual-map-note small {
  font-size: 10px;
}

.manual-index-section {
  padding-top: 64px;
  padding-bottom: 42px;
  background:
    linear-gradient(90deg, var(--color-accent-05), var(--color-transparent) 42%),
    var(--color-bg-panel);
}

.manual-intro {
  max-width: 960px;
}

.manual-intro h2 {
  font-size: clamp(30px, 4vw, 42px);
}

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

.manual-intro a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-36);
  text-underline-offset: 0.2em;
}

.manual-toc {
  margin-top: 34px;
}

.manual-article {
  padding-top: 42px;
  padding-bottom: var(--section-space);
}

.manual-chapter {
  position: relative;
  padding-top: 82px;
  padding-bottom: 92px;
  border-bottom: 1px solid var(--color-accent-14);
  scroll-margin-top: calc(var(--header-height) + 24px);
}

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

.manual-chapter::before {
  position: absolute;
  top: 104px;
  left: calc((var(--gutter) + 110px) * -1);
  width: 92px;
  height: 1px;
  content: "";
  background: var(--color-accent-36);
  box-shadow: 0 0 14px var(--color-accent-24);
}

.chapter-marker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-accent-18);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.chapter-marker span {
  color: var(--color-accent);
}

.chapter-marker strong {
  color: var(--color-text-muted);
  font-size: 9px;
}

.manual-chapter h2 {
  margin-bottom: 30px;
}

.manual-chapter h3 {
  position: relative;
  margin-top: 2em;
  padding-left: 18px;
  font-size: clamp(21px, 3vw, 27px);
}

.manual-chapter h3::before {
  position: absolute;
  top: 0.28em;
  bottom: 0.22em;
  left: 0;
  width: 3px;
  content: "";
  background: var(--color-accent);
  box-shadow: 0 0 14px var(--color-accent-48);
}

.manual-chapter p {
  line-height: 1.92;
}

.manual-chapter .data-table-wrap {
  margin-top: 30px;
  margin-bottom: 34px;
}

.manual-chapter pre {
  margin-top: 30px;
  margin-bottom: 34px;
}

.manual-next {
  border-top: 1px solid var(--color-accent-10);
  background:
    radial-gradient(circle at 16% 50%, var(--color-accent-08), var(--color-transparent) 32%),
    var(--color-bg);
}

.manual-next-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1.15fr);
  align-items: start;
  gap: clamp(30px, 6vw, 76px);
}

.manual-next-links {
  display: grid;
  border-top: 1px solid var(--color-border);
}

.manual-next-links a {
  position: relative;
  display: grid;
  gap: 3px;
  min-height: 78px;
  padding: 15px 42px 15px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-accent-03);
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.manual-next-links a::after {
  position: absolute;
  top: 50%;
  right: 16px;
  content: "→";
  color: var(--color-accent);
  font-family: var(--font-mono);
  transform: translateY(-50%);
}

.manual-next-links a:hover {
  background: var(--color-warn-10);
  color: var(--color-warn);
}

.manual-next-links strong {
  font-size: 14px;
}

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

@media (max-width: 1000px) {
  .manual-hero-grid {
    grid-template-columns: 1fr;
  }

  .manual-map {
    width: min(100%, 680px);
    min-height: 430px;
  }

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

@media (max-width: 640px) {
  .manual-hero {
    min-height: auto;
    padding-top: 94px;
    padding-bottom: 64px;
  }

  .manual-hero h1 {
    font-size: clamp(28px, 9vw, 40px);
  }

  .manual-lead {
    font-size: 15px;
  }

  .manual-map {
    min-height: 340px;
    padding: 18px;
  }

  .manual-map-rail {
    display: none;
  }

  .manual-map-note {
    right: 18px;
    bottom: 18px;
    left: 18px;
  }

  .manual-map-note small {
    line-height: 1.45;
  }

  .manual-index-section {
    padding-top: 52px;
    padding-bottom: 34px;
  }

  .manual-chapter {
    padding-top: 66px;
    padding-bottom: 72px;
  }

  .manual-chapter::before {
    display: none;
  }

  .chapter-marker {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .manual-chapter h3 {
    padding-left: 14px;
  }

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

  .manual-next-links a {
    padding-right: 38px;
    padding-left: 12px;
  }
}