.deepdoc-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-strong);
}

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  opacity: .28;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, var(--color-text), transparent);
  mask-image: linear-gradient(to bottom, var(--color-text), transparent);
}

.deepdoc-hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .72fr);
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
}

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

.deepdoc-intro h1 {
  max-width: 760px;
  margin-bottom: 22px;
}

.deepdoc-lede {
  max-width: 720px;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
}

.deepdoc-facts {
  justify-content: flex-start;
}

.reference-window {
  min-width: 0;
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-window);
  background: var(--color-paper);
  box-shadow: var(--shadow-window);
}

.reference-chrome {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border);
}

.reference-body {
  padding: clamp(22px, 4vw, 34px);
}

.reference-label {
  margin-bottom: 16px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
}

.reference-list {
  margin: 0;
}

.reference-list > div {
  display: grid;
  grid-template-columns: minmax(64px, .32fr) minmax(0, 1fr);
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.reference-list dt {
  color: var(--color-accent-dark);
  font-family: var(--font-display);
  font-weight: 700;
}

.reference-list dd {
  margin: 0;
  color: var(--color-text-muted);
}

.reference-note {
  margin: 20px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.deepdoc-article {
  padding-top: clamp(42px, 7vw, 82px);
  padding-bottom: var(--section-space);
}

.deepdoc-article > .toc-tabs {
  margin-bottom: clamp(54px, 8vw, 92px);
}

.doc-section {
  max-width: 940px;
  margin-inline: auto;
  padding-top: 32px;
  padding-bottom: clamp(64px, 9vw, 108px);
}

.doc-section + .doc-section {
  border-top: 1px solid var(--color-border);
}

.doc-section h2 {
  max-width: 820px;
}

.doc-section h3 {
  margin-top: 38px;
  color: var(--accent-dark, var(--color-accent-dark));
  font-size: clamp(22px, 2.6vw, 29px);
}

.doc-section p,
.doc-section li {
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.88;
}

.doc-section p + p {
  margin-top: 18px;
}

.doc-section a {
  font-weight: 650;
}

.section-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
}

.section-mark::before {
  width: 0;
  height: 0;
  border-right: 7px solid transparent;
  border-bottom: 10px solid var(--color-pink);
  content: "";
}

.doc-section .table-scroll {
  margin-top: 30px;
  margin-bottom: 34px;
}

.doc-section .callout {
  margin-top: 32px;
  margin-bottom: 32px;
}

.doc-section .callout p {
  font-size: 16px;
  line-height: 1.75;
}

@media (max-width: 900px) {
  .deepdoc-hero-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .reference-window {
    max-width: 680px;
  }
}

@media (max-width: 768px) {
  .deepdoc-intro {
    padding-top: 14px;
    padding-bottom: 8px;
  }

  .deepdoc-article {
    padding-top: 34px;
  }

  .doc-section {
    padding-top: 24px;
    padding-bottom: 68px;
  }

  .doc-section p,
  .doc-section li {
    font-size: 16px;
    line-height: 1.82;
  }

  .doc-section h3 {
    margin-top: 32px;
  }
}

@media (max-width: 520px) {
  .deepdoc-facts {
    align-items: stretch;
  }

  .deepdoc-facts .fact-pill {
    flex: 1 1 145px;
  }

  .reference-chrome {
    padding-inline: 12px;
  }

  .reference-chrome .chrome-file {
    max-width: 116px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .reference-chrome .chrome-code {
    display: none;
  }

  .reference-list > div {
    grid-template-columns: minmax(58px, .3fr) minmax(0, 1fr);
  }
}