:root {
  --deepdoc-hero-width: 760px;
  --deepdoc-code-width: 11rem;
  --deepdoc-route-min: 13rem;
  --deepdoc-list-marker-size: 1.7rem;
  --deepdoc-rule-size: 3rem;
}

.guide-hero {
  padding-top: clamp(54px, 8vw, 96px);
  padding-bottom: clamp(46px, 7vw, 82px);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.guide-hero .reading-wrap {
  max-width: var(--deepdoc-hero-width);
}

.guide-hero .badge {
  margin-bottom: 18px;
}

.guide-hero h1 {
  max-width: 720px;
  margin-bottom: 22px;
}

.guide-deck {
  max-width: 700px;
  margin-bottom: 24px;
  color: var(--color-ink-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
}

.guide-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 30px;
}

.guide-intro {
  text-align: left;
}

.guide-intro p:last-child {
  margin-bottom: 0;
}

.guide-intro a,
.deepdoc a {
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-soft);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.guide-intro a:hover,
.deepdoc a:hover {
  color: var(--color-accent-deep);
  text-decoration-color: var(--color-accent);
}

.deepdoc {
  counter-reset: deepdoc-section;
}

.deepdoc-section {
  counter-increment: deepdoc-section;
  border-bottom: 1px solid var(--color-line);
}

.deepdoc-section:nth-child(even) {
  background: var(--color-panel);
}

.deepdoc-section .reading-wrap {
  position: relative;
}

.chapter-code {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.chapter-code::after {
  width: var(--deepdoc-rule-size);
  height: 1px;
  background: var(--color-accent);
  content: '';
}

.deepdoc-section h2 {
  margin-bottom: 38px;
}

.deepdoc-section h2::before {
  display: block;
  margin-bottom: 9px;
  color: var(--color-ink-muted);
  content: counter(deepdoc-section, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.deepdoc-section h3 {
  margin-top: 34px;
  margin-bottom: 13px;
  font-size: clamp(20px, 2vw, 24px);
}

.deepdoc-section h2 + h3 {
  margin-top: 0;
}

.deepdoc-section p,
.deepdoc-section li {
  font-size: 16px;
  line-height: 1.9;
}

.deepdoc-section p {
  margin-bottom: 1.15em;
}

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

.deepdoc-section pre {
  margin-top: 28px;
  margin-bottom: 24px;
  white-space: pre;
}

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

.deepdoc-section .data-table {
  min-width: var(--table-min-width);
}

.route-matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(var(--deepdoc-route-min), 1fr));
  gap: 14px;
  margin-top: 32px;
  margin-bottom: 30px;
}

.route-note {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
}

.route-note .mono-label {
  margin-bottom: 10px;
  color: var(--color-accent);
}

.route-note h3 {
  margin-top: 0;
  font-size: 19px;
}

.route-note p:last-child {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.75;
}

.diagnostic-list {
  display: grid;
  gap: 10px;
  margin: 26px 0 30px;
  padding: 0;
  list-style: none;
}

.diagnostic-list li {
  position: relative;
  min-width: 0;
  padding: 16px 18px 16px 52px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
}

.diagnostic-list li::before {
  position: absolute;
  top: 17px;
  left: 16px;
  display: grid;
  width: var(--deepdoc-list-marker-size);
  height: var(--deepdoc-list-marker-size);
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  color: var(--color-accent);
  content: '·';
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
}

.guide-close {
  margin-top: 48px;
  border-color: var(--color-accent);
  background: var(--color-accent-faint);
}

.guide-close .mono-label {
  color: var(--color-accent);
}

.guide-close h3 {
  margin-top: 0;
}

.guide-close p:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .guide-hero {
    padding-top: 44px;
  }

  .guide-deck {
    font-size: 17px;
  }

  .deepdoc-section h2 {
    margin-bottom: 30px;
  }

  .deepdoc-section h3 {
    margin-top: 30px;
  }

  .deepdoc-section p,
  .deepdoc-section li {
    font-size: 15px;
    line-height: 1.85;
  }

  .route-matrix {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .guide-facts {
    align-items: stretch;
  }

  .guide-facts .trust-chip {
    width: 100%;
    justify-content: center;
  }

  .guide-intro {
    padding: 20px;
  }

  .chapter-code {
    max-width: 100%;
    overflow-wrap: anywhere;
    letter-spacing: 0.08em;
  }

  .chapter-code::after {
    flex: 1;
  }

  .diagnostic-list li {
    padding-right: 14px;
    padding-left: 48px;
  }

  .guide-close {
    padding: 20px;
  }
}