.deepdoc-hero {
  position: relative;
  max-width: 100%;
  padding-top: 82px;
  padding-bottom: 68px;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(135deg, var(--color-halo-accent), var(--color-halo-alt)),
    var(--color-bg);
}

.deepdoc-hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), var(--color-accent-alt), transparent);
  content: "";
  opacity: .35;
  pointer-events: none;
}

.deepdoc-kicker {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  gap: 9px;
  padding: 6px 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-muted);
  font: 600 12px/1.3 var(--font-mono);
  letter-spacing: .04em;
}

.deepdoc-hero h1 {
  max-width: 720px;
  margin-top: 22px;
}

.deepdoc-lede {
  max-width: 720px;
  margin-top: 22px;
  color: var(--color-muted);
  font-size: 18px;
  line-height: 1.8;
}

.deepdoc-lede a {
  color: var(--color-accent-dark);
  font-weight: 650;
}

.deepdoc-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.deepdoc-article {
  padding-top: 34px;
  padding-bottom: var(--section-space);
}

.deepdoc-intro {
  padding-top: 44px;
  padding-bottom: 20px;
}

.deepdoc-section {
  padding-top: 78px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-section:last-child {
  border-bottom: 0;
}

.deepdoc-section h2 {
  margin-top: 10px;
  margin-bottom: 34px;
}

.deepdoc-section h3 {
  margin-top: 38px;
  font-size: 24px;
}

.chapter-mark {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 5px 10px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  background: var(--color-panel-soft);
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
}

.deepdoc-section .table-scroll {
  margin-top: 30px;
  margin-bottom: 30px;
}

.deepdoc-section pre {
  margin-top: 30px;
  margin-bottom: 30px;
}

.deepdoc-section .callout,
.deepdoc-intro .callout {
  margin-top: 30px;
}

.deepdoc-section a,
.deepdoc-intro a {
  color: var(--color-accent-dark);
}

.deepdoc-section code {
  font-size: 13px;
}

.deepdoc-section td {
  color: var(--color-muted);
}

.deepdoc-section td:first-child {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .deepdoc-hero {
    padding-top: 58px;
    padding-bottom: 48px;
  }

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

  .deepdoc-article {
    padding-top: 24px;
  }

  .deepdoc-intro {
    padding-top: 36px;
  }

  .deepdoc-section {
    padding-top: 62px;
  }

  .deepdoc-section h2 {
    margin-bottom: 28px;
  }

  .deepdoc-section h3 {
    margin-top: 32px;
    font-size: 22px;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero {
    max-width: 100%;
    overflow-x: clip;
  }

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

  .deepdoc-facts .fact-pill {
    width: 100%;
  }

  .deepdoc-section {
    padding-top: 54px;
  }

  .deepdoc-section h2 {
    font-size: 32px;
  }

  .deepdoc-section pre {
    padding: 16px;
    font-size: 12px;
  }
}