:root {
  --manual-aside-width: 370px;
  --manual-chapter-gap: 88px;
}

.manual-hero {
  position: relative;
  overflow-x: clip;
  padding-top: 86px;
  padding-bottom: 90px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-page);
}

.manual-hero::before {
  position: absolute;
  top: 24px;
  right: 3%;
  width: 46%;
  height: 82%;
  background: repeating-linear-gradient(
    90deg,
    var(--color-line-focus) 0,
    var(--color-line-focus) 1px,
    transparent 1px,
    transparent 9px
  );
  content: "";
  opacity: 0.72;
  -webkit-mask-image: radial-gradient(closest-side at 64% 42%, var(--color-ink) 14%, transparent 88%);
  mask-image: radial-gradient(closest-side at 64% 42%, var(--color-ink) 14%, transparent 88%);
  pointer-events: none;
}

.manual-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, var(--manual-aside-width));
  align-items: center;
  gap: 80px;
}

.manual-hero-copy {
  max-width: 700px;
}

.manual-hero h1 {
  max-width: 680px;
  font-size: clamp(34px, 3.4vw, 48px);
}

.manual-lead {
  max-width: 660px;
  margin-bottom: 30px;
  color: var(--color-ink-muted);
  font-size: 19px;
  line-height: 1.85;
}

.manual-facts {
  display: flex;
  gap: 10px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.manual-facts span {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 5px 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.manual-map {
  position: relative;
  padding: 24px;
  border: 1px solid var(--color-line-focus);
  border-radius: var(--radius-panel);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-deep);
  transform: rotate(0.7deg);
}

.manual-map::before {
  position: absolute;
  inset: 12px -13px -13px 12px;
  z-index: -1;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  content: "";
}

.manual-map-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-line);
}

.manual-map-head .mono {
  margin-left: auto;
  color: var(--color-ink-soft);
  font-size: 10px;
}

.manual-map-mark {
  width: 11px;
  height: 11px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  box-shadow: var(--shadow-button);
}

.manual-map ol {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 12px 0 0;
  list-style: none;
}

.manual-map li {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 0 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
}

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

.manual-map li > span {
  grid-row: 1 / span 2;
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.manual-map li > strong {
  font-size: 15px;
}

.manual-map li > small {
  color: var(--color-ink-muted);
  font-size: 12px;
}

.manual-intro h2 {
  font-size: clamp(26px, 3vw, 36px);
}

.manual-document {
  padding-top: 36px;
  padding-bottom: var(--section-space);
}

.manual-document > .jump-nav {
  margin-bottom: 70px;
}

.manual-chapter {
  width: 100%;
  max-width: var(--reading-width);
  margin-inline: auto;
  padding-top: var(--manual-chapter-gap);
  scroll-margin-top: 74px;
}

.manual-chapter:first-of-type {
  padding-top: 10px;
}

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

.manual-chapter h2 {
  margin-bottom: 34px;
}

.manual-chapter h3 {
  margin-top: 42px;
  margin-bottom: 14px;
  font-size: 22px;
}

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

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

.manual-chapter > p + p {
  margin-top: -2px;
}

.chapter-index {
  margin-bottom: 12px;
  color: var(--color-brand-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.manual-table-scroll {
  max-width: 100%;
  margin: 34px 0;
  overflow-x: auto;
  border-radius: var(--radius-control);
  -webkit-overflow-scrolling: touch;
}

.manual-table-scroll .data-table {
  min-width: 680px;
}

.manual-chapter pre {
  margin-top: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.manual-chapter .callout {
  margin-top: 34px;
  margin-bottom: 8px;
}

@media (max-width: 920px) {
  .manual-hero-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .manual-hero-copy {
    max-width: var(--reading-width);
  }

  .manual-map {
    width: 100%;
    max-width: 560px;
  }

  .manual-hero::before {
    top: 42%;
    right: -12%;
    width: 88%;
    height: 58%;
  }
}

@media (max-width: 768px) {
  :root {
    --manual-chapter-gap: 66px;
  }

  .manual-hero {
    padding-top: 62px;
    padding-bottom: 70px;
  }

  .manual-hero h1 {
    font-size: clamp(26px, 7.5vw, 30px);
  }

  .manual-lead {
    font-size: 17px;
  }

  .manual-document {
    padding-top: 24px;
  }

  .manual-document > .jump-nav {
    margin-bottom: 52px;
  }

  .manual-chapter h3 {
    margin-top: 34px;
    font-size: 20px;
  }
}

@media (max-width: 640px) {
  .manual-hero {
    padding-top: 48px;
    padding-bottom: 58px;
  }

  .manual-hero-grid {
    gap: 42px;
  }

  .manual-map {
    padding: 20px;
    transform: none;
  }

  .manual-map::before {
    inset: 8px -7px -8px 7px;
  }

  .manual-lead {
    font-size: 16px;
    line-height: 1.8;
  }

  .manual-facts {
    margin-top: 22px;
  }

  .manual-facts span {
    font-size: 11px;
  }

  .manual-chapter + .manual-chapter {
    margin-top: 58px;
  }

  .manual-table-scroll .data-table {
    min-width: 620px;
  }
}