.doc-hero {
  position: relative;
  padding-top: clamp(64px, 8vw, 104px);
  overflow-x: clip;
  background:
    linear-gradient(var(--color-canvas), var(--color-canvas)) padding-box,
    var(--gradient-accent) border-box;
  color: var(--color-ink);
}

.doc-hero::before {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 31px,
      var(--color-stripe-glow) 32px,
      transparent 33px
    );
  content: "";
  opacity: 0.56;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, var(--color-ink), transparent 82%);
  mask-image: linear-gradient(to bottom, var(--color-ink), transparent 82%);
}

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

.doc-hero h1 {
  max-width: 720px;
  margin-top: 22px;
  margin-bottom: 18px;
  font-size: clamp(30px, 3.2vw, 46px);
}

.doc-hero-lead {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--color-ink);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 620;
  line-height: 1.7;
}

.doc-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.doc-scope {
  max-width: 760px;
  margin-top: 30px;
  margin-bottom: 54px;
  padding: 22px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-canvas);
  color: var(--color-ink-muted);
  box-shadow: var(--shadow-card);
}

.doc-fact-band {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-ink-muted);
}

.doc-fact-band .wrap {
  display: flex;
  min-height: 66px;
  align-items: center;
  justify-content: center;
  gap: 12px 34px;
  font: 600 12px/1.5 var(--font-mono);
}

.doc-fact-band span {
  position: relative;
}

.doc-fact-band span + span::before {
  position: absolute;
  top: 50%;
  left: -19px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
  transform: translateY(-50%);
}

.doc-index {
  padding-top: clamp(56px, 7vw, 82px);
  padding-bottom: clamp(56px, 7vw, 82px);
}

.doc-index-title {
  margin-bottom: 12px;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(25px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: -0.012em;
  line-height: 1.25;
}

.doc-index .toc {
  margin-top: 30px;
}

.doc-index .toc-list {
  flex-wrap: wrap;
  width: 100%;
}

.doc-article {
  padding-top: clamp(66px, 8vw, 104px);
  padding-bottom: clamp(80px, 10vw, 128px);
}

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

.doc-chapter + .doc-chapter {
  margin-top: clamp(84px, 11vw, 132px);
  padding-top: clamp(76px, 9vw, 112px);
  border-top: 1px solid var(--color-border);
}

.chapter-number {
  display: inline-flex;
  margin-bottom: 13px;
  padding: 5px 11px;
  border: 1px solid var(--color-accent-surface);
  border-radius: var(--radius-pill);
  background: var(--color-accent-surface);
  color: var(--color-accent-deep);
  font: 650 12px/1.4 var(--font-mono);
}

.doc-chapter h2 {
  margin-top: 0;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.doc-chapter h3 {
  position: relative;
  padding-left: 17px;
}

.doc-chapter h3::before {
  position: absolute;
  top: 0.34em;
  bottom: 0.28em;
  left: 0;
  width: 4px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  content: "";
}

.doc-chapter p {
  line-height: 1.9;
}

.doc-chapter .table-scroll,
.doc-chapter pre {
  margin-top: 30px;
  margin-bottom: 34px;
}

.doc-chapter .data-table {
  min-width: 640px;
}

.doc-chapter .callout {
  margin-top: 34px;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .doc-hero h1 {
    font-size: clamp(26px, 7vw, 30px);
  }

  .doc-fact-band .wrap {
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .doc-fact-band span + span::before {
    display: none;
  }

  .doc-index .toc-list {
    flex-wrap: nowrap;
    width: max-content;
  }
}

@media (max-width: 640px) {
  .doc-hero {
    padding-top: 48px;
  }

  .doc-hero-links {
    align-items: stretch;
    flex-direction: column;
  }

  .doc-hero-links .button {
    width: 100%;
  }

  .doc-scope {
    margin-bottom: 42px;
    padding: 19px;
  }

  .doc-chapter + .doc-chapter {
    margin-top: 72px;
    padding-top: 66px;
  }

  .doc-chapter h3 {
    padding-left: 14px;
  }

  .doc-chapter pre {
    padding: 18px;
    font-size: 12px;
  }
}