.doc-hero {
  position: relative;
  padding-top: clamp(64px, 9vw, 116px);
  padding-bottom: clamp(54px, 8vw, 96px);
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
}

.doc-hero::after {
  position: absolute;
  right: max(var(--gutter), calc((100vw - var(--content-width)) / 2));
  bottom: -118px;
  width: 360px;
  height: 240px;
  border: 1px solid var(--color-accent-35);
  border-radius: var(--radius-large);
  background: radial-gradient(circle at 50% 0, var(--color-accent-18), var(--color-transparent) 68%);
  content: "";
  pointer-events: none;
  transform: rotate(-8deg);
}

.doc-hero .wrap {
  position: relative;
  z-index: 1;
}

.doc-hero h1 {
  max-width: 780px;
  margin-bottom: 22px;
}

.doc-lead {
  max-width: 800px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.85;
}

.doc-lead a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-55);
  text-underline-offset: 4px;
}

.doc-facts {
  display: flex;
  max-width: 100%;
  margin-top: 34px;
  flex-wrap: wrap;
  gap: 10px;
}

.doc-facts span {
  display: inline-flex;
  max-width: 100%;
  min-height: 34px;
  align-items: center;
  padding: 7px 13px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.35;
}

.doc-body-section {
  padding-top: clamp(54px, 7vw, 88px);
}

.deep-prose {
  max-width: 900px;
}

.doc-chapter {
  padding-top: 36px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.doc-chapter + .doc-chapter {
  margin-top: 72px;
  padding-top: 84px;
  border-top: 1px solid var(--color-line);
}

.doc-chapter h2 {
  margin-top: 0;
}

.doc-chapter h3 {
  margin-top: 2.15em;
}

.chapter-index {
  margin-bottom: 14px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.deep-prose p {
  line-height: 1.95;
}

.deep-prose .table-scroll {
  margin: 30px 0;
  border-radius: var(--radius-medium);
}

.deep-prose .data-table {
  min-width: 700px;
}

.deep-prose pre {
  margin-top: 24px;
  margin-bottom: 28px;
}

.deep-prose .callout {
  max-width: 860px;
}

.deep-prose .callout a {
  color: var(--color-accent);
}

.end-download-card {
  max-width: 900px;
}

@media (max-width: 768px) {
  .doc-hero::after {
    right: -120px;
    bottom: -146px;
    width: 300px;
  }

  .doc-chapter + .doc-chapter {
    margin-top: 54px;
    padding-top: 64px;
  }

  .deep-prose p {
    line-height: 1.88;
  }
}

@media (max-width: 640px) {
  .doc-hero {
    padding-top: 52px;
    padding-bottom: 64px;
  }

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

  .doc-facts span {
    width: 100%;
  }

  .doc-chapter {
    scroll-margin-top: calc(var(--header-height) + 14px);
  }

  .deep-prose .data-table {
    min-width: 650px;
  }
}