.deepdoc-hero {
  padding-top: clamp(70px, 8vw, 112px);
  padding-bottom: clamp(56px, 7vw, 94px);
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-hero::before {
  width: min(44vw, 620px);
  aspect-ratio: 1;
  position: absolute;
  top: 8%;
  right: -10%;
  content: "";
  opacity: 0.72;
  background:
    repeating-linear-gradient(90deg, transparent 0 27px, var(--color-accent-soft) 27px 29px),
    repeating-linear-gradient(0deg, transparent 0 27px, var(--color-warning-soft) 27px 29px);
  transform: rotate(5deg);
  pointer-events: none;
}

.deepdoc-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.58fr);
  align-items: end;
  gap: clamp(32px, 6vw, 86px);
  position: relative;
  z-index: 1;
}

.deepdoc-hero-copy .kicker {
  margin-bottom: 24px;
}

.deepdoc-hero-copy h1 {
  max-width: 10em;
}

.deepdoc-hero-copy .lead {
  margin: 26px 0 0;
}

.deepdoc-hero-copy .button-row {
  margin-top: 30px;
}

.deepdoc-ledger {
  padding: clamp(24px, 3.5vw, 42px);
  position: relative;
  border: 1px solid var(--color-border);
  background:
    linear-gradient(135deg, var(--color-paper-glow), transparent),
    var(--color-panel);
  box-shadow: var(--shadow-card);
}

.deepdoc-ledger::after {
  position: absolute;
  inset: 9px -9px -9px 9px;
  z-index: -1;
  content: "";
  border: 1px solid var(--color-border);
  background: var(--color-panel-secondary);
}

.deepdoc-ledger-label {
  margin-bottom: 22px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.deepdoc-ledger dl {
  margin: 0;
}

.deepdoc-ledger div {
  padding: 14px 0;
  display: grid;
  grid-template-columns: minmax(90px, 0.45fr) minmax(0, 1fr);
  gap: 16px;
  border-top: 1px solid var(--color-border-soft);
}

.deepdoc-ledger dt {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.deepdoc-ledger dd {
  margin: 0;
  color: var(--color-text);
  font-weight: 700;
}

.deepdoc-intro {
  max-width: 58rem;
}

.deepdoc-intro-links {
  margin-top: 28px;
  padding: 20px 22px;
  border-left: 5px solid var(--color-success);
  background: var(--color-success-soft);
}

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

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

.deepdoc-frame .toc-tabs {
  margin-bottom: clamp(54px, 7vw, 88px);
}

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

.deepdoc-section {
  padding-top: 20px;
  padding-bottom: clamp(66px, 9vw, 108px);
  border-bottom: 1px solid var(--color-border);
}

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

.deepdoc-section > h2 {
  position: relative;
}

.deepdoc-section > h2::before {
  width: 42px;
  height: 5px;
  margin-bottom: 18px;
  display: block;
  content: "";
  background:
    linear-gradient(90deg, var(--color-accent) 0 58%, var(--color-warning) 58%);
}

.deepdoc-section h3 {
  margin-top: 2em;
}

.deepdoc-section p {
  margin-bottom: 1.25em;
}

.deepdoc-section ul,
.deepdoc-section ol {
  padding-left: 1.35em;
}

.deepdoc-section li {
  margin-bottom: 0.7em;
}

.deepdoc-section .table-scroll {
  margin: 30px 0;
}

.deepdoc-section .data-table td:first-child {
  color: var(--color-text);
  font-weight: 700;
}

.deepdoc-section pre {
  margin: 28px 0;
}

.decision-strip {
  margin: 28px 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  box-shadow: 6px 6px 0 var(--color-panel-secondary);
}

.decision-strip article {
  min-width: 0;
  padding: 22px;
}

.decision-strip article + article {
  border-left: 1px solid var(--color-border);
}

.decision-strip h3 {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: 1rem;
}

.decision-strip p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.selection-checklist {
  margin: 30px 0;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border);
  background:
    repeating-linear-gradient(0deg, transparent 0 31px, var(--color-border-faint) 31px 32px),
    var(--color-panel);
  box-shadow: var(--shadow-card);
}

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

.selection-checklist ol {
  margin-bottom: 0;
}

.related-reading {
  padding-top: 0;
}

.related-reading-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.related-reading-card {
  min-width: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  box-shadow: 5px 5px 0 var(--color-panel-secondary);
}

.related-reading-card .tag {
  align-self: flex-start;
}

.related-reading-card h3 {
  margin: 18px 0 10px;
  font-size: 1.35rem;
}

.related-reading-card p {
  color: var(--color-text-muted);
}

.related-reading-card a:last-child {
  margin-top: auto;
  font-weight: 750;
  text-decoration: none;
}

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

  .deepdoc-hero::before {
    width: 70vw;
    right: -28%;
    opacity: 0.42;
  }

  .deepdoc-ledger {
    max-width: 640px;
  }

  .decision-strip,
  .related-reading-grid {
    grid-template-columns: 1fr;
  }

  .decision-strip article + article {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero {
    padding-top: 58px;
    padding-bottom: 64px;
  }

  .deepdoc-hero::before {
    display: none;
  }

  .deepdoc-ledger::after {
    display: none;
  }

  .deepdoc-ledger div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

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

  .deepdoc-section {
    padding-bottom: 72px;
  }
}