:root {
  --deepdoc-column: 940px;
  --deepdoc-rule: 1px;
  --deepdoc-marker-size: 30px;
}

.deepdoc-hero {
  padding-top: 76px;
  padding-bottom: 72px;
  border-bottom: var(--deepdoc-rule) solid var(--color-border-soft);
  overflow-x: clip;
}

.deepdoc-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(280px, .72fr);
  align-items: end;
  gap: 58px;
}

.deepdoc-intro {
  min-width: 0;
  max-width: 760px;
}

.deepdoc-intro h1 {
  max-width: 720px;
  margin-top: 22px;
  margin-bottom: 22px;
  font-size: clamp(48px, 5vw, 68px);
}

.deepdoc-lead {
  max-width: 720px;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.8;
}

.deepdoc-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 22px;
}

.reference-card {
  min-width: 0;
  padding: 26px;
  border: var(--deepdoc-rule) solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.reference-card p {
  margin: 12px 0 22px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.reference-card a {
  color: var(--color-accent);
}

.reference-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .1em;
}

.reference-facts {
  margin: 0;
}

.reference-facts div {
  padding: 13px 0;
  border-top: var(--deepdoc-rule) solid var(--color-border-soft);
}

.reference-facts dt {
  margin-bottom: 4px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.reference-facts dd {
  margin: 0;
  color: var(--color-text);
  font-size: 13px;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.deepdoc-shell {
  max-width: var(--deepdoc-column);
  padding-top: 54px;
  padding-bottom: 40px;
}

.deepdoc-shell .toc-tabs {
  top: 12px;
  margin-bottom: 66px;
}

.deepdoc-section {
  padding-top: 30px;
  padding-bottom: 72px;
  border-bottom: var(--deepdoc-rule) solid var(--color-border-soft);
}

.deepdoc-section + .deepdoc-section {
  padding-top: 82px;
}

.deepdoc-section h2 {
  max-width: 760px;
  margin-bottom: 34px;
}

.deepdoc-section h3 {
  margin-top: 42px;
  margin-bottom: 16px;
  font-size: 24px;
}

.deepdoc-section p {
  line-height: 1.92;
}

.deepdoc-section .table-scroll {
  margin-top: 34px;
  margin-bottom: 38px;
}

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

.diagnosis-steps {
  margin: 26px 0 32px;
  padding: 0;
  list-style: none;
  counter-reset: diagnosis;
}

.diagnosis-steps li {
  position: relative;
  min-height: var(--deepdoc-marker-size);
  padding: 0 0 22px 46px;
  counter-increment: diagnosis;
}

.diagnosis-steps li::before {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: var(--deepdoc-marker-size);
  height: var(--deepdoc-marker-size);
  border: var(--deepdoc-rule) solid var(--color-accent-deep);
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
  color: var(--color-accent);
  content: counter(diagnosis);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
  place-items: center;
}

.deepdoc-endnote {
  margin-top: 72px;
  padding: 24px 26px;
  border: var(--deepdoc-rule) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.deepdoc-endnote strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text);
}

.deepdoc-endnote p {
  margin: 0;
}

.deepdoc-endnote a {
  color: var(--color-accent);
}

@media (max-width: 900px) {
  .deepdoc-hero-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 38px;
  }

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

@media (max-width: 768px) {
  .deepdoc-hero {
    padding-top: 54px;
    padding-bottom: 56px;
  }

  .deepdoc-intro h1 {
    font-size: clamp(34px, 10vw, 40px);
  }

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

  .deepdoc-shell {
    padding-top: 40px;
  }

  .deepdoc-shell .toc-tabs {
    margin-bottom: 44px;
  }

  .deepdoc-section {
    padding-top: 22px;
    padding-bottom: 56px;
  }

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

  .deepdoc-section h3 {
    margin-top: 34px;
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .reference-card {
    padding: 21px;
  }

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

  .deepdoc-actions .btn-secondary {
    width: 100%;
  }

  .diagnosis-steps li {
    padding-left: 42px;
  }

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