:root {
  --deepdoc-grid-line: rgba(35, 85, 85, 0.34);
  --deepdoc-accent-haze: rgba(255, 111, 165, 0.09);
  --deepdoc-success-haze: rgba(29, 209, 161, 0.08);
  --deepdoc-violet-haze: rgba(185, 140, 255, 0.08);
  --deepdoc-code-key: var(--color-lilac);
  --deepdoc-code-value: var(--color-success);
}

.deepdoc-hero {
  position: relative;
  padding-top: 78px;
  padding-bottom: 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--deepdoc-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--deepdoc-grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, transparent, black 18%, transparent);
  content: "";
  pointer-events: none;
}

.deepdoc-hero::after {
  position: absolute;
  top: -140px;
  right: -90px;
  width: 520px;
  height: 520px;
  border-radius: var(--radius-round);
  background: radial-gradient(circle, var(--deepdoc-accent-haze), transparent 68%);
  content: "";
  pointer-events: none;
}

.deepdoc-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.48fr);
  gap: 64px;
  align-items: end;
}

.deepdoc-intro {
  max-width: 780px;
}

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

.deepdoc-lead {
  max-width: 740px;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.deepdoc-actions,
.deepdoc-facts {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.deepdoc-actions {
  margin-bottom: 28px;
}

.deepdoc-facts {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.deepdoc-fact {
  display: inline-flex;
  min-height: 34px;
  padding: 6px 11px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.deepdoc-fact::before {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: var(--radius-round);
  background: var(--color-success);
  content: "";
}

.deepdoc-fact:nth-child(2)::before {
  background: var(--color-accent);
}

.deepdoc-fact:nth-child(3)::before {
  background: var(--color-violet);
}

.deepdoc-map {
  position: relative;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-panel);
  box-shadow: var(--shadow-success), var(--shadow-float);
}

.deepdoc-map::before {
  position: absolute;
  right: 18px;
  bottom: -18px;
  left: 18px;
  height: 38px;
  background-image: radial-gradient(circle, var(--color-accent) 1px, transparent 1.5px);
  background-size: 8px 8px;
  mask-image: linear-gradient(90deg, transparent, black 24%, transparent);
  content: "";
  opacity: 0.48;
}

.deepdoc-map-head {
  display: flex;
  margin-bottom: 22px;
  padding-bottom: 14px;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-map-head span {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-round);
  background: var(--color-accent);
}

.deepdoc-map-head span:nth-child(2) {
  background: var(--color-warning);
}

.deepdoc-map-head span:nth-child(3) {
  background: var(--color-success);
}

.deepdoc-map-title {
  width: auto;
  height: auto;
  margin-left: 5px;
  border-radius: 0;
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
}

.deepdoc-flow {
  display: grid;
  gap: 10px;
}

.deepdoc-flow-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

.deepdoc-flow-number {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-raised);
  color: var(--color-lilac);
  font-family: var(--font-mono);
  font-size: 11px;
}

.deepdoc-body {
  padding-top: 48px;
  padding-bottom: 112px;
}

.deepdoc-body > .toc {
  margin-bottom: 72px;
}

.deepdoc-chapter {
  scroll-margin-top: 24px;
  padding-top: 34px;
  padding-bottom: 72px;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-chapter:last-of-type {
  border-bottom: 0;
}

.deepdoc-chapter-head {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  margin-bottom: 34px;
  gap: 24px;
  align-items: start;
}

.deepdoc-chapter-index {
  padding-top: 5px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.deepdoc-chapter:nth-of-type(3n + 2) .deepdoc-chapter-index {
  color: var(--color-success);
}

.deepdoc-chapter:nth-of-type(3n) .deepdoc-chapter-index {
  color: var(--color-violet);
}

.deepdoc-chapter-summary {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 17px;
}

.deepdoc-copy {
  max-width: var(--reading-width);
  margin-inline: auto;
}

.deepdoc-copy h3 {
  margin-top: 2.6rem;
  padding-top: 0.3rem;
}

.deepdoc-copy h3:first-child {
  margin-top: 0;
}

.deepdoc-copy .callout,
.deepdoc-copy pre,
.deepdoc-copy .table-shell {
  margin-top: 28px;
  margin-bottom: 30px;
}

.table-shell {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.deepdoc-copy .data-table {
  min-width: 680px;
}

.deepdoc-copy pre {
  box-shadow: var(--shadow-soft);
}

.config-caption {
  margin: -18px 0 28px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.code-key {
  color: var(--deepdoc-code-key);
}

.code-value {
  color: var(--deepdoc-code-value);
}

.deepdoc-checklist {
  display: grid;
  margin: 24px 0 30px;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.deepdoc-checklist li {
  position: relative;
  padding: 14px 16px 14px 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  color: var(--color-text-muted);
}

.deepdoc-checklist li::before {
  position: absolute;
  top: 18px;
  left: 17px;
  width: 9px;
  height: 9px;
  border-radius: var(--radius-round);
  background: var(--color-success);
  box-shadow: 0 0 14px var(--color-success);
  content: "";
}

.deepdoc-related {
  display: grid;
  margin-top: 72px;
  padding: 28px;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.6fr);
  gap: 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-panel);
  box-shadow: var(--shadow-violet);
}

.deepdoc-related h2 {
  font-size: clamp(25px, 3vw, 34px);
}

.deepdoc-related-links {
  display: grid;
  gap: 10px;
}

.deepdoc-related-links a {
  display: flex;
  min-height: 44px;
  padding: 10px 12px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-raised);
  color: var(--color-text);
  text-decoration: none;
}

.deepdoc-related-links a::after {
  color: var(--color-accent);
  content: "→";
  font-family: var(--font-mono);
}

.deepdoc-related-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

@media (max-width: 900px) {
  .deepdoc-hero-inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .deepdoc-map {
    max-width: 620px;
  }

  .deepdoc-related {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero {
    padding-top: 54px;
    padding-bottom: 58px;
  }

  .deepdoc-lead {
    font-size: 16px;
  }

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

  .deepdoc-actions a {
    width: 100%;
  }

  .deepdoc-map {
    padding: 20px;
  }

  .deepdoc-body {
    padding-top: 30px;
    padding-bottom: 86px;
  }

  .deepdoc-body > .toc {
    margin-bottom: 48px;
  }

  .deepdoc-chapter {
    padding-top: 24px;
    padding-bottom: 58px;
  }

  .deepdoc-chapter-head {
    grid-template-columns: 1fr;
    margin-bottom: 28px;
    gap: 8px;
  }

  .deepdoc-chapter-summary {
    font-size: 15px;
  }

  .deepdoc-related {
    padding: 20px;
  }
}