.deepdoc-hero {
  position: relative;
  padding-top: clamp(72px, 9vw, 118px);
  padding-bottom: clamp(68px, 8vw, 104px);
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background: var(--gradient-panel);
}

.deepdoc-hero::before,
.deepdoc-hero::after {
  position: absolute;
  border-radius: var(--radius-pill);
  pointer-events: none;
  content: "";
}

.deepdoc-hero::before {
  top: -130px;
  right: -180px;
  width: 620px;
  height: 520px;
  background: var(--gradient-glow-amber);
}

.deepdoc-hero::after {
  bottom: -210px;
  left: -180px;
  width: 680px;
  height: 520px;
  background: var(--gradient-glow-rose);
}

.deepdoc-hero .wrap {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.75fr);
  align-items: center;
  gap: clamp(38px, 7vw, 88px);
}

.deepdoc-hero__copy {
  max-width: 800px;
}

.deepdoc-hero__copy h1 {
  max-width: 780px;
}

.deepdoc-hero__copy .lead {
  max-width: 760px;
  margin-bottom: 18px;
}

.deepdoc-hero__copy .muted {
  max-width: 740px;
}

.deepdoc-hero__facts {
  margin-top: 28px;
}

.text-link {
  color: var(--color-accent-dark);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--color-border);
  text-underline-offset: 4px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.text-link:hover {
  color: var(--color-rose);
  text-decoration-color: currentColor;
}

.manual-scope {
  position: relative;
  padding: clamp(26px, 4vw, 38px);
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-cabinet);
}

.manual-scope::before {
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: var(--gradient-brand);
  content: "";
}

.manual-scope__code {
  margin-bottom: 18px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.manual-scope h2 {
  margin-bottom: 16px;
  font-size: clamp(26px, 3vw, 34px);
}

.manual-scope ul {
  margin-bottom: 24px;
  color: var(--color-text-muted);
}

.manual-scope li + li {
  margin-top: 8px;
}

.deepdoc-toc {
  border-radius: var(--radius-xl);
}

.deepdoc-toc a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
}

.manual-section {
  padding-top: clamp(64px, 8vw, 104px);
  padding-bottom: var(--section-space);
}

.reference-body {
  --reading-width: 900px;
}

.manual-chapter {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.manual-chapter + .manual-chapter {
  margin-top: clamp(72px, 9vw, 112px);
  padding-top: clamp(72px, 9vw, 112px);
  border-top: 1px solid var(--color-border);
}

.chapter-heading {
  display: flex;
  margin-bottom: 34px;
  align-items: flex-start;
  gap: 18px;
}

.chapter-number {
  display: inline-flex;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.chapter-kicker {
  margin-bottom: 6px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

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

.manual-chapter > p,
.manual-chapter > ul,
.manual-chapter > ol {
  margin-bottom: 1.35em;
}

.manual-chapter > h3 {
  margin-top: 1.9em;
}

.manual-chapter .table-scroll {
  margin-block: 32px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
}

.manual-chapter .data-table {
  min-width: 680px;
  border: 0;
}

.manual-chapter .data-table tbody tr:last-child td {
  border-bottom: 0;
}

.parameter-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-block: 32px;
  gap: 14px;
}

.parameter-board__item {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.parameter-board__item code {
  display: inline-block;
  margin-bottom: 12px;
}

.parameter-board__item strong {
  display: block;
  margin-bottom: 7px;
}

.parameter-board__item p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-block: 34px;
  gap: 16px;
}

.decision-card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
}

.decision-card__code {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.decision-card h3 {
  margin-bottom: 9px;
  font-size: 21px;
}

.decision-card p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.selection-checklist {
  padding-left: 0;
  list-style: none;
  counter-reset: selection-step;
}

.selection-checklist li {
  position: relative;
  min-height: 48px;
  padding: 14px 16px 14px 62px;
  border-bottom: 1px solid var(--color-border);
  counter-increment: selection-step;
}

.selection-checklist li::before {
  position: absolute;
  top: 12px;
  left: 8px;
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  content: counter(selection-step, decimal-leading-zero);
}

@media (max-width: 860px) {
  .deepdoc-hero .wrap {
    grid-template-columns: minmax(0, 1fr);
  }

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

@media (max-width: 640px) {
  .deepdoc-hero {
    padding-top: 58px;
    padding-bottom: 64px;
  }

  .deepdoc-hero__facts {
    align-items: flex-start;
    flex-direction: column;
  }

  .chapter-heading {
    gap: 12px;
  }

  .chapter-number {
    width: 40px;
    height: 40px;
  }

  .parameter-board,
  .decision-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .selection-checklist li {
    padding-left: 54px;
  }

  .selection-checklist li::before {
    left: 4px;
  }
}