.deepdoc-hero {
  position: relative;
  max-width: 100%;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
  background: linear-gradient(180deg, var(--color-accent-05), var(--color-paper));
  padding-top: 72px;
  padding-bottom: 80px;
}

.deepdoc-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr);
  align-items: center;
  gap: 58px;
}

.deepdoc-hero__copy {
  min-width: 0;
}

.deepdoc-title {
  max-width: 760px;
  margin-top: 18px;
  font-size: clamp(52px, 6vw, 68px);
}

.deepdoc-intro {
  max-width: 720px;
  margin-top: 22px;
  color: var(--color-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
}

.deepdoc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 18px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.deepdoc-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.deepdoc-meta span::before {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

.deepdoc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.reference-card {
  min-width: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-window), inset 0 1px 0 var(--color-highlight);
  padding: 24px;
}

.reference-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 18px;
  font-family: var(--font-display);
  font-size: 18px;
}

.reference-card__bolt {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  flex: 0 0 38px;
  border-radius: var(--radius-medium);
  background: linear-gradient(150deg, var(--color-accent), var(--color-accent-deep));
  color: var(--color-white);
}

.reference-card__list {
  display: grid;
  gap: 0;
  margin-top: 8px;
  list-style: none;
}

.reference-card__list li {
  display: grid;
  grid-template-columns: minmax(84px, auto) minmax(0, 1fr);
  gap: 16px;
  border-bottom: 1px solid var(--color-line);
  padding-top: 13px;
  padding-bottom: 13px;
}

.reference-card__list span {
  color: var(--color-muted);
  font-size: 13px;
}

.reference-card__list strong {
  min-width: 0;
  font-size: 13px;
  text-align: right;
}

.reference-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.deepdoc-doodle {
  right: -90px;
  bottom: -24px;
  width: 180px;
  height: 90px;
}

.deepdoc-layout {
  padding-bottom: var(--section-space);
}

.deepdoc-layout > .toc-tabs {
  margin-bottom: 68px;
}

.deepdoc-layout a:not(.toc-tabs a) {
  font-weight: 650;
}

.deepdoc-section {
  max-width: var(--reading-width);
  margin-inline: auto;
  padding-top: 22px;
  padding-bottom: 54px;
}

.deepdoc-section + .deepdoc-section {
  border-top: 1px solid var(--color-line);
  padding-top: 76px;
}

.deepdoc-section > * + * {
  margin-top: 20px;
}

.deepdoc-section h2 {
  margin-top: 8px;
  margin-bottom: 36px;
}

.deepdoc-section h3 {
  margin-top: 42px;
  font-size: clamp(22px, 2.4vw, 28px);
}

.deepdoc-section p {
  color: var(--color-ink);
  font-size: 16px;
  line-height: 1.95;
}

.deepdoc-section p:not(.section-kicker) {
  text-align: justify;
  text-justify: inter-ideograph;
}

.deepdoc-section .callout p,
.deepdoc-section .diagnostic-flow p {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
  text-align: left;
}

.deepdoc-section .callout__title {
  color: var(--color-ink);
}

.section-kicker {
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .1em;
}

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

.deepdoc-section table {
  font-size: 14px;
}

.deepdoc-section pre {
  margin-top: 26px;
  margin-bottom: 26px;
  border-left: 4px solid var(--color-indigo);
  background: var(--color-surface);
  color: var(--color-ink);
  font-size: 13px;
  line-height: 1.75;
}

.diagnostic-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.diagnostic-flow__item {
  min-width: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface-warm);
  box-shadow: inset 0 1px 0 var(--color-highlight);
  padding: 20px;
}

.diagnostic-flow__item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
}

.diagnostic-flow__item p {
  margin-top: 8px;
}

.deepdoc-checklist {
  margin-top: 34px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-surface-warm);
  box-shadow: inset 0 1px 0 var(--color-highlight), var(--shadow-card);
  padding: 28px;
}

.deepdoc-checklist h3 {
  margin-top: 0;
}

.deepdoc-checklist ul {
  display: grid;
  gap: 12px;
  margin-top: 20px;
  padding-left: 0;
  list-style: none;
}

.deepdoc-checklist li {
  position: relative;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  padding: 14px 16px 14px 44px;
}

.deepdoc-checklist li::before {
  position: absolute;
  top: 15px;
  left: 16px;
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-success-12);
  content: "✓";
  color: var(--color-success);
  font-size: 12px;
  font-weight: 800;
}

@media (max-width: 960px) {
  .deepdoc-hero__inner {
    grid-template-columns: 1fr;
    gap: 38px;
  }

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

  .deepdoc-doodle {
    display: none;
  }
}

@media (max-width: 768px) {
  .deepdoc-hero {
    padding-top: 52px;
    padding-bottom: 60px;
  }

  .deepdoc-title {
    font-size: clamp(32px, 9vw, 40px);
  }

  .deepdoc-layout > .toc-tabs {
    margin-bottom: 46px;
  }

  .deepdoc-section {
    padding-bottom: 42px;
  }

  .deepdoc-section + .deepdoc-section {
    padding-top: 58px;
  }

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

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

  .diagnostic-flow {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero__inner {
    gap: 28px;
  }

  .deepdoc-actions {
    width: 100%;
    flex-direction: column;
  }

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

  .reference-card {
    padding: 20px;
  }

  .reference-card__list li {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .reference-card__list strong {
    text-align: left;
  }

  .deepdoc-meta {
    flex-direction: column;
    gap: 6px;
  }

  .deepdoc-section p {
    font-size: 15px;
    line-height: 1.88;
    text-align: left;
  }

  .deepdoc-checklist {
    padding: 20px;
  }

  .deepdoc-checklist li {
    padding-right: 13px;
  }
}