.deepdoc-hero {
  position: relative;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(145deg, var(--color-panel), var(--color-bg));
  overflow: clip;
}

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(var(--color-dot) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-dot) 1px, transparent 1px);
  background-size: 34px 34px;
  pointer-events: none;
}

.deepdoc-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: center;
  min-height: 540px;
}

.deepdoc-intro {
  min-width: 0;
  padding-top: 34px;
  padding-bottom: 34px;
}

.deepdoc-intro h1 {
  max-width: 760px;
  margin-bottom: 24px;
}

.deepdoc-lead {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.75;
}

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

.deepdoc-route {
  max-width: 740px;
  margin-bottom: 0;
  font-size: 14px;
}

.deepdoc-route a {
  color: var(--color-accent-dark);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.deepdoc-index {
  position: relative;
  min-width: 0;
  padding: 26px;
  background: var(--color-glass);
  box-shadow: var(--shadow-3);
}

.deepdoc-index-label {
  display: block;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
}

.deepdoc-index-core {
  display: flex;
  min-height: 210px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-index-core strong {
  font-family: var(--font-display);
  font-size: 78px;
  line-height: 1;
}

.deepdoc-index-core span {
  margin-top: 12px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
}

.deepdoc-index-lines {
  display: grid;
  gap: 9px;
  padding-top: 22px;
}

.deepdoc-index-lines i {
  display: block;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-border);
}

.deepdoc-index-lines i:nth-child(2),
.deepdoc-index-lines i:nth-child(4) {
  width: 72%;
  background: var(--color-accent);
}

.deepdoc-index p {
  margin: 22px 0 0;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .08em;
}

.deepdoc-body {
  max-width: calc(980px + var(--gutter) * 2);
  padding-top: 42px;
  padding-bottom: var(--section-space);
}

.deepdoc-body > section {
  padding-top: 24px;
}

.deepdoc-body > section + section {
  margin-top: 42px;
  padding-top: 56px;
  border-top: 1px solid var(--color-border);
}

.deepdoc-body h2 {
  margin-top: 0;
}

.deepdoc-body h3 {
  font-size: clamp(21px, 2.6vw, 28px);
}

.deepdoc-body p,
.deepdoc-body li {
  font-size: 16px;
  line-height: 1.9;
}

.deepdoc-body .table-scroll {
  margin-top: 28px;
  margin-bottom: 32px;
}

.deepdoc-body .callout {
  margin-top: 28px;
  margin-bottom: 30px;
}

.deepdoc-body pre {
  margin-top: 28px;
  margin-bottom: 32px;
  line-height: 1.8;
}

@media (max-width: 900px) {
  .deepdoc-grid {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 36px;
    padding-bottom: 48px;
  }

  .deepdoc-index {
    max-width: 520px;
  }
}

@media (max-width: 768px) {
  .deepdoc-intro {
    padding-top: 12px;
    padding-bottom: 0;
  }

  .deepdoc-index {
    display: none;
  }

  .deepdoc-body {
    padding-top: 26px;
  }

  .deepdoc-body > section + section {
    margin-top: 28px;
    padding-top: 44px;
  }

  .deepdoc-body p,
  .deepdoc-body li {
    font-size: 15px;
    line-height: 1.86;
  }
}