:root {
  --deepdoc-path-width: 360px;
  --deepdoc-prose-width: 860px;
}

.deepdoc-hero {
  padding-top: clamp(54px, 7vw, 92px);
  padding-bottom: clamp(42px, 6vw, 76px);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
}

.deepdoc-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, var(--deepdoc-path-width));
  align-items: center;
  gap: clamp(34px, 7vw, 84px);
}

.deepdoc-hero-copy {
  max-width: 690px;
}

.deepdoc-lead {
  max-width: 42em;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
}

.diagnostic-path {
  padding: 24px;
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-card);
  background: var(--color-dark);
  color: var(--color-on-dark);
  box-shadow: var(--shadow-card);
}

.diagnostic-path-head {
  display: grid;
  gap: 4px;
  margin-bottom: 20px;
}

.diagnostic-path-head span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.diagnostic-path-head strong {
  color: var(--color-on-dark);
  font-size: 17px;
}

.diagnostic-path ol {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.diagnostic-path ol::before {
  position: absolute;
  top: 21px;
  bottom: 21px;
  left: 18px;
  width: 2px;
  background: var(--color-accent-medium);
  content: "";
}

.diagnostic-path li {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 13px 0;
}

.diagnostic-path li > span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent-strong);
  border-radius: var(--radius-pill);
  background: var(--color-dark-raised);
  color: var(--color-node-core);
  font-family: var(--font-mono);
  font-size: 11px;
}

.diagnostic-path li div {
  display: grid;
  gap: 2px;
}

.diagnostic-path li strong {
  color: var(--color-on-dark);
  font-size: 14px;
}

.diagnostic-path li small {
  color: var(--color-on-dark-muted);
  font-size: 12px;
}

.manual-relation {
  display: flex;
  gap: 10px;
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--color-line);
  color: var(--color-text-muted);
}

.manual-relation strong {
  flex-shrink: 0;
  color: var(--color-text);
}

.deepdoc-directory {
  position: relative;
  z-index: 6;
  padding-top: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.deepdoc-directory .jump-toc {
  top: 8px;
}

.deepdoc-body {
  padding-top: clamp(56px, 8vw, 92px);
}

.manual-prose {
  max-width: var(--deepdoc-prose-width);
  margin-inline: auto;
}

.manual-chapter {
  scroll-margin-top: 92px;
  padding-bottom: clamp(72px, 9vw, 112px);
}

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

.chapter-head {
  margin-bottom: 38px;
}

.chapter-index {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.chapter-index::before {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.chapter-head p {
  max-width: 47em;
  color: var(--color-text-muted);
  font-size: 17px;
}

.manual-prose h3 {
  margin-top: 38px;
}

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

.manual-prose .callout {
  margin-top: 30px;
  margin-bottom: 34px;
}

.manual-prose pre {
  margin-top: 22px;
  margin-bottom: 28px;
}

.manual-prose .table-scroll {
  margin-top: 26px;
  margin-bottom: 34px;
}

.manual-prose .data-table {
  min-width: 660px;
  font-size: 14px;
}

.manual-prose .end-download-card {
  max-width: none;
}

.manual-prose .end-download-card .button-primary {
  color: var(--color-surface);
  background: var(--color-accent-deep);
  box-shadow: none;
}

.manual-prose .end-download-card .button-primary:hover {
  color: var(--color-surface);
  background: var(--color-ink);
}

@media (max-width: 820px) {
  .deepdoc-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .diagnostic-path {
    max-width: 560px;
  }

  .manual-relation {
    flex-direction: column;
    gap: 5px;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero {
    padding-top: 40px;
    padding-bottom: 42px;
  }

  .deepdoc-lead {
    font-size: 16px;
  }

  .diagnostic-path {
    padding: 20px;
  }

  .deepdoc-directory {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .manual-chapter {
    scroll-margin-top: 74px;
  }

  .chapter-head {
    margin-bottom: 30px;
  }

  .chapter-head p {
    font-size: 16px;
  }

  .manual-prose h3 {
    margin-top: 32px;
  }
}