.page-deepdoc {
  background: var(--color-canvas);
}

.doc-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.doc-hero::before {
  position: absolute;
  top: -34%;
  right: -12%;
  width: 62%;
  height: 120%;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(circle at center, color-mix(in srgb, var(--color-sunrise) 68%, var(--color-transparent)), var(--color-transparent) 64%),
    radial-gradient(circle at 72% 62%, color-mix(in srgb, var(--color-rose) 42%, var(--color-transparent)), var(--color-transparent) 58%);
}

.doc-hero-grid {
  position: relative;
  display: grid;
  min-height: 650px;
  grid-template-columns: minmax(0, 0.92fr) minmax(430px, 0.78fr);
  align-items: center;
  gap: 76px;
  padding-top: 72px;
  padding-bottom: 78px;
}

.doc-hero-copy {
  position: relative;
  z-index: 2;
}

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

.doc-lead {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.85;
}

.doc-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  margin-bottom: 22px;
}

.doc-map {
  position: relative;
  z-index: 2;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-surface) 94%, var(--color-canvas));
  box-shadow: var(--shadow-card);
  transform: rotate(1.5deg);
}

.doc-map::before {
  position: absolute;
  inset: 10px;
  z-index: -1;
  border: 1px solid color-mix(in srgb, var(--color-brand) 16%, var(--color-transparent));
  border-radius: var(--radius-md);
  pointer-events: none;
  content: "";
}

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

.doc-map-head strong {
  font-family: var(--font-display);
  font-size: 15px;
}

.doc-map-flow {
  display: grid;
  gap: 0;
  padding-top: 24px;
  padding-bottom: 24px;
}

.doc-map-node {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  align-items: center;
  gap: 3px 14px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-low);
}

.doc-map-node.is-accent {
  border-color: color-mix(in srgb, var(--color-brand) 48%, var(--color-border));
  background: color-mix(in srgb, var(--color-brand) 7%, var(--color-surface));
}

.doc-map-node > span {
  grid-row: 1 / 3;
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.doc-map-node strong {
  font-family: var(--font-display);
  font-size: 15px;
}

.doc-map-node small {
  color: var(--color-text-muted);
  font-size: 12px;
}

.doc-map-line {
  width: 1px;
  height: 22px;
  margin-inline: auto;
  background: var(--color-border);
}

.doc-platform-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.doc-platform-cloud span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding-inline: 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  background: var(--color-surface-warm);
  font-family: var(--font-mono);
  font-size: 11px;
}

.doc-intro-band {
  border-bottom: 1px solid var(--color-dark-line);
  color: var(--color-dark-muted);
  background: var(--color-ink-dark);
}

.doc-intro-band p {
  padding-top: 26px;
  padding-bottom: 26px;
  line-height: 1.8;
}

.doc-intro-band a {
  color: var(--color-dark-text);
  text-decoration: underline;
  text-decoration-color: var(--color-brand);
  text-underline-offset: 4px;
}

.doc-reading-frame {
  padding-top: 42px;
  padding-bottom: var(--section-space);
}

.doc-reading-frame .toc-tabs {
  top: 12px;
  margin-bottom: 62px;
}

.doc-article {
  width: 100%;
  max-width: var(--reading-width);
  margin-inline: auto;
}

.doc-section {
  padding-top: 12px;
  padding-bottom: 68px;
  border-bottom: 1px solid var(--color-border);
}

.doc-section + .doc-section {
  padding-top: 78px;
}

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

.doc-section-label {
  display: inline-flex;
  margin-bottom: 13px;
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.doc-section h2 {
  margin-top: 0;
  margin-bottom: 36px;
}

.doc-section h3 {
  margin-top: 42px;
  margin-bottom: 14px;
  font-size: 23px;
}

.doc-section p {
  margin-bottom: 20px;
  line-height: 1.92;
}

.doc-section .callout {
  margin-top: 30px;
  margin-bottom: 34px;
  line-height: 1.85;
}

.doc-section .table-scroll {
  margin-top: 32px;
  margin-bottom: 34px;
}

.doc-section pre {
  margin-top: 30px;
  margin-bottom: 34px;
  line-height: 1.8;
}

.error-ladder {
  display: grid;
  gap: 1px;
  margin-top: 34px;
  margin-bottom: 36px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-border);
}

.error-ladder > div {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 3px 13px;
  padding: 20px;
  background: var(--color-surface);
}

.error-ladder .status-dot {
  grid-row: 1 / 3;
  margin-top: 8px;
}

.error-ladder strong {
  color: var(--color-text);
  font-family: var(--font-display);
}

.error-ladder p {
  margin: 0;
  font-size: 14px;
}

.doc-summary {
  position: relative;
  margin-top: 52px;
  padding: 34px;
  overflow: hidden;
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-md);
  color: var(--color-dark-text);
  background: var(--color-ink-dark);
  box-shadow: var(--shadow-card);
}

.doc-summary::after {
  position: absolute;
  top: -90px;
  right: -70px;
  width: 270px;
  height: 240px;
  pointer-events: none;
  content: "";
  background: radial-gradient(circle, color-mix(in srgb, var(--color-brand) 30%, var(--color-transparent)), var(--color-transparent) 68%);
}

.doc-summary > * {
  position: relative;
  z-index: 1;
}

.doc-summary > strong {
  display: block;
  margin-bottom: 10px;
  color: var(--color-dark-text);
  font-family: var(--font-display);
  font-size: 25px;
}

.doc-summary p {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--color-dark-muted);
}

.doc-summary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.doc-summary .btn-secondary {
  border-color: var(--color-dark-line);
  color: var(--color-dark-text);
}

.doc-summary .btn-secondary:hover {
  border-color: var(--color-brand);
  color: var(--color-text);
}

@media (max-width: 1020px) {
  .doc-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .doc-map {
    max-width: 680px;
  }

  .doc-hero::before {
    top: 28%;
    right: -20%;
    width: 92%;
    height: 72%;
  }
}

@media (max-width: 768px) {
  .doc-hero-grid {
    gap: 38px;
    padding-top: 54px;
    padding-bottom: 58px;
  }

  .doc-map {
    transform: none;
  }

  .doc-reading-frame {
    padding-top: 26px;
  }

  .doc-reading-frame .toc-tabs {
    margin-bottom: 48px;
  }

  .doc-section {
    padding-bottom: 54px;
  }

  .doc-section + .doc-section {
    padding-top: 62px;
  }

  .doc-section h3 {
    margin-top: 34px;
    font-size: 21px;
  }
}

@media (max-width: 640px) {
  .doc-hero::before {
    top: 38%;
    right: -70%;
    width: 150%;
    height: 58%;
  }

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

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

  .doc-map {
    padding: 20px;
  }

  .doc-map-node {
    grid-template-columns: 46px minmax(0, 1fr);
    padding: 14px;
  }

  .doc-platform-cloud span {
    max-width: 100%;
    overflow: hidden;
  }

  .doc-intro-band p {
    padding-top: 22px;
    padding-bottom: 22px;
  }

  .doc-summary {
    padding: 25px;
  }

  .doc-summary-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .doc-summary-actions .btn {
    width: 100%;
  }

  .error-ladder > div {
    padding: 17px;
  }
}