.deepdoc-hero {
  padding-top: clamp(44px, 7vw, 88px);
  padding-bottom: clamp(38px, 6vw, 72px);
}

.deepdoc-hero-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, .7fr);
  gap: 18px;
  align-items: stretch;
}

.deepdoc-hero-copy,
.deepdoc-index-card {
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-low);
}

.deepdoc-hero-copy {
  padding: clamp(28px, 6vw, 68px);
}

.deepdoc-hero h1 {
  max-width: 820px;
  margin: 18px 0;
}

.deepdoc-intro {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--color-ink-muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.75;
}

.deepdoc-hero .button-row {
  margin-top: 28px;
}

.deepdoc-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.deepdoc-index-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 4vw, 38px);
  background: var(--color-panel-muted);
  box-shadow: none;
}

.deepdoc-index-code {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
}

.deepdoc-index-title {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
}

.deepdoc-index-card ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.deepdoc-index-card li {
  position: relative;
  padding-left: 20px;
  color: var(--color-ink-muted);
}

.deepdoc-index-card li::before {
  position: absolute;
  top: .72em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-xs);
  background: var(--color-accent);
  content: "";
}

.guide-relationship {
  max-width: 980px;
  margin-inline: auto;
}

.guide-relationship h2 {
  margin-bottom: 20px;
  font-size: clamp(28px, 4vw, 40px);
}

.guide-relationship p {
  color: var(--color-ink-muted);
  font-size: 16px;
}

.guide-relationship a {
  color: var(--color-accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.deepdoc-body {
  padding-top: 28px;
  padding-bottom: var(--section-space);
}

.deepdoc-body .toc-tabs {
  top: 12px;
}

.guide-section {
  margin-top: 34px;
  padding: clamp(24px, 5vw, 52px);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-low);
}

.guide-section:first-of-type {
  margin-top: 0;
}

.deepdoc-body .guide-section h2 {
  margin-top: 0;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-line);
}

.deepdoc-body .guide-section h3 {
  position: relative;
  padding-left: 18px;
}

.deepdoc-body .guide-section h3::before {
  position: absolute;
  top: .3em;
  bottom: .3em;
  left: 0;
  width: 4px;
  border-radius: var(--radius-xs);
  background: var(--color-accent);
  content: "";
}

.guide-section p,
.guide-section li {
  color: var(--color-ink-muted);
}

.guide-section strong {
  color: var(--color-ink);
}

.guide-section .callout {
  margin-top: 30px;
}

.guide-section .table-scroll {
  margin: 30px 0;
}

.guide-section pre {
  margin: 28px 0;
}

.diagnostic-list {
  display: grid;
  gap: 12px;
  margin: 26px 0;
  padding: 0;
  list-style: none;
}

.diagnostic-list li {
  padding: 14px 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-page);
}

.deepdoc-body > .promo-block {
  max-width: 100%;
}

@media (max-width: 900px) {
  .deepdoc-hero-panel {
    grid-template-columns: 1fr;
  }

  .deepdoc-index-card {
    min-height: 0;
  }
}

@media (max-width: 768px) {
  .deepdoc-hero {
    padding-top: 32px;
    padding-bottom: 32px;
  }

  .deepdoc-hero-copy,
  .deepdoc-index-card {
    padding: 24px;
  }

  .guide-section {
    padding: 24px 20px;
  }

  .deepdoc-body .guide-section h2 {
    margin-bottom: 18px;
  }
}

@media (max-width: 390px) {
  .deepdoc-hero-copy,
  .deepdoc-index-card,
  .guide-section {
    padding: 20px 16px;
  }

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