.doc-hero {
  position: relative;
  overflow-x: clip;
  padding-top: clamp(54px, 8vw, 96px);
  padding-bottom: clamp(54px, 8vw, 92px);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(to right, var(--color-accent-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-accent-faint) 1px, transparent 1px),
    radial-gradient(circle at 78% 48%, var(--color-accent-soft), transparent 24rem);
  background-size: 48px 48px, 48px 48px, auto;
}

.doc-hero::after {
  position: absolute;
  top: 18%;
  right: -9rem;
  width: 25rem;
  height: 25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow:
    0 0 0 2rem var(--color-accent-faint),
    0 0 0 4rem var(--color-accent-faint);
  content: "";
  pointer-events: none;
}

.doc-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(290px, .55fr);
  align-items: center;
  gap: clamp(36px, 7vw, 92px);
}

.doc-hero-copy {
  min-width: 0;
}

.doc-hero-copy h1 {
  margin-top: 18px;
  margin-bottom: 22px;
}

.doc-hero-copy .lead {
  margin-bottom: 0;
}

.doc-hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.doc-hero-note {
  max-width: 790px;
  margin-top: 24px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.doc-hero-note a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-soft);
  text-underline-offset: 3px;
}

.doc-signal-map {
  position: relative;
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white-soft);
  box-shadow: var(--shadow-card);
}

.doc-signal-map::before {
  position: absolute;
  top: 64px;
  bottom: 89px;
  left: 43px;
  border-left: 1px dashed var(--color-accent);
  content: "";
}

.doc-signal-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}

.doc-signal-head strong {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

.doc-signal-list {
  position: relative;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 12px;
  list-style: none;
}

.doc-signal-list li {
  min-width: 0;
  min-height: 52px;
  padding: 8px 12px 8px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.doc-signal-list li::before {
  position: absolute;
  left: 12px;
  width: 14px;
  height: 14px;
  border: 3px solid var(--color-white);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
  content: "";
}

.doc-signal-list span {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.doc-signal-list strong {
  min-width: 0;
  font-size: 13px;
  text-align: right;
}

.doc-signal-map > p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 12px;
}

.doc-shell {
  padding-top: 28px;
  padding-bottom: clamp(72px, 10vw, 124px);
}

.deepdoc-content {
  width: min(100%, var(--reading-width));
  margin: 52px auto 0;
}

.deepdoc-content h2 .no-break {
  white-space: normal;
}

.doc-section {
  position: relative;
  padding-top: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}

.doc-section:first-child {
  padding-top: 18px;
}

.doc-section:last-of-type {
  border-bottom: 0;
}

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

.doc-section h3 {
  margin-top: 36px;
  margin-bottom: 14px;
}

.doc-section p {
  margin-bottom: 19px;
}

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

.doc-section pre {
  margin-top: 24px;
  margin-bottom: 26px;
}

.chapter-mark {
  width: fit-content;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-left: 3px solid var(--color-accent);
  background: var(--color-panel-strong);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
}

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

.deepdoc-content .promo-block {
  width: min(100%, 980px);
}

@media (max-width: 980px) {
  .doc-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .doc-signal-map {
    max-width: 620px;
  }
}

@media (max-width: 768px) {
  .doc-hero {
    padding-top: 46px;
    padding-bottom: 54px;
  }

  .doc-hero::after {
    display: none;
  }

  .doc-hero-grid {
    gap: 34px;
  }

  .doc-shell {
    padding-top: 20px;
  }

  .deepdoc-content {
    margin-top: 34px;
  }

  .doc-section {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .doc-signal-list li {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .doc-signal-list strong {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .doc-hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

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

  .doc-signal-map {
    padding: 19px;
  }

  .doc-signal-map::before {
    left: 37px;
  }

  .doc-signal-list li {
    padding-left: 44px;
  }

  .doc-section h2 .no-break {
    white-space: normal;
  }
}