.deepdoc-hero {
  position: relative;
  padding-top: clamp(64px, 9vw, 108px);
  padding-bottom: clamp(58px, 8vw, 96px);
  border-bottom: 1px solid var(--color-border);
  overflow: clip;
}

.deepdoc-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 430px at 18% 6%, var(--color-mint-glow), transparent 68%),
    radial-gradient(680px 390px at 78% 18%, var(--color-sky-glow), transparent 70%);
  opacity: 0.72;
  pointer-events: none;
}

.deepdoc-hero-inner {
  position: relative;
}

.deepdoc-hero h1 {
  max-width: 16em;
}

.deepdoc-lead {
  max-width: 47em;
  margin-bottom: 28px;
  color: var(--color-ink-muted);
  font-size: 18px;
  line-height: 1.8;
}

.deepdoc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-bottom: 25px;
}

.deepdoc-chips {
  max-width: 48em;
}

.deepdoc-content {
  color: var(--color-ink);
}

.manual-intro {
  margin-bottom: 34px;
}

.manual-intro h2 {
  font-size: clamp(24px, 2.6vw, 32px);
}

.manual-intro p:last-child {
  margin-bottom: 0;
}

.manual-chapter {
  padding-top: 70px;
  scroll-margin-top: 88px;
}

.manual-chapter + .manual-chapter {
  margin-top: 68px;
  border-top: 1px solid var(--color-border);
}

.manual-chapter h2 {
  scroll-margin-top: 96px;
}

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

.manual-chapter p,
.manual-chapter li,
.manual-intro p {
  line-height: 1.86;
}

.chapter-index {
  display: inline-flex;
  margin-bottom: 13px;
  padding: 6px 12px;
  border: 1px solid var(--color-accent-line);
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.manual-chapter .table-scroll {
  margin-top: 28px;
  margin-bottom: 32px;
  border-radius: var(--radius-md);
}

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

.manual-chapter pre {
  margin-top: 28px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-card);
}

.proxy-checklist {
  margin-top: 30px;
  margin-bottom: 30px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

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

.proxy-checklist ol {
  margin-bottom: 0;
}

.proxy-checklist li + li {
  margin-top: 10px;
}

.maintenance-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.maintenance-grid .card {
  padding: 20px;
  background: var(--color-surface-soft);
}

.maintenance-grid h3 {
  margin-top: 0;
  font-size: 18px;
}

.maintenance-grid p {
  margin-bottom: 0;
  color: var(--color-ink-muted);
  font-size: 14px;
}

.diagnostic-tree {
  margin-top: 24px;
  margin-bottom: 30px;
  padding: 24px 24px 24px 46px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.diagnostic-tree li + li {
  margin-top: 10px;
}

.manual-chapter .download-note-card h2 {
  margin-top: 0;
  font-size: clamp(22px, 2.4vw, 30px);
}

@media (max-width: 760px) {
  .deepdoc-lead {
    font-size: 16px;
  }

  .manual-chapter {
    padding-top: 54px;
  }

  .manual-chapter + .manual-chapter {
    margin-top: 50px;
  }

  .maintenance-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .deepdoc-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .deepdoc-actions .button {
    width: 100%;
  }

  .manual-intro {
    padding: 21px;
  }

  .manual-chapter h3 {
    margin-top: 28px;
  }

  .proxy-checklist,
  .diagnostic-tree {
    padding: 20px;
  }

  .diagnostic-tree {
    padding-left: 38px;
  }
}