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

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-dot) 1px, transparent 1.2px);
  background-size: 18px 18px;
  content: "";
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent, var(--color-text), transparent);
  mask-image: linear-gradient(to right, transparent, var(--color-text), transparent);
}

.deepdoc-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.72fr);
  align-items: center;
  gap: 56px;
}

.deepdoc-hero-copy {
  max-width: 780px;
}

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

.deepdoc-hero .lead {
  max-width: 740px;
  margin-bottom: 0;
}

.deepdoc-index-card {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--panel-shadow);
}

.deepdoc-index-card h2 {
  margin-top: 18px;
  margin-bottom: 12px;
  font-size: 25px;
  line-height: 1.3;
}

.deepdoc-index-card p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.deepdoc-index-card a {
  color: var(--color-accent-dark);
  font-weight: 650;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-soft);
  text-underline-offset: 3px;
}

.deepdoc-index-card dl {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
}

.deepdoc-index-card dl div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.deepdoc-index-card dt {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.deepdoc-index-card dd {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.deepdoc-article {
  position: relative;
  padding-top: 48px;
  padding-bottom: 88px;
}

.deepdoc-article > .toc-tabs {
  top: 12px;
}

.deepdoc-section {
  position: relative;
  max-width: 920px;
  margin-inline: auto;
  padding-top: 72px;
  padding-bottom: 72px;
  border-bottom: 1px solid var(--color-border);
}

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

.deepdoc-section h2 {
  max-width: 760px;
  margin-bottom: 36px;
}

.deepdoc-section h3 {
  margin-top: 42px;
  margin-bottom: 14px;
  font-size: 23px;
}

.deepdoc-section p {
  font-size: 17px;
  line-height: 1.85;
}

.deepdoc-section .callout p {
  font-size: 15px;
  line-height: 1.75;
}

.section-marker {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  margin-bottom: 14px;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  background: var(--color-panel-muted);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.deepdoc-section .compare-table-wrap {
  margin-top: 32px;
  margin-bottom: 36px;
  box-shadow: var(--small-shadow);
}

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

.protocol-table td:first-child {
  font-family: var(--font-mono);
}

.scenario-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
  margin-bottom: 36px;
}

.scenario-matrix article {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--small-shadow);
}

.scenario-matrix h3 {
  margin-top: 16px;
  margin-bottom: 8px;
  font-size: 18px;
}

.scenario-matrix p {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.7;
}

.deepdoc-article > .promo-block {
  max-width: 920px;
  margin-inline: auto;
}

.deepdoc-article > .promo-block h3 {
  margin-bottom: 8px;
  font-size: 25px;
}

@media (max-width: 900px) {
  .deepdoc-hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .deepdoc-index-card {
    max-width: 680px;
  }
}

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

  .deepdoc-article {
    padding-top: 32px;
    padding-bottom: 68px;
  }

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

  .deepdoc-section h3 {
    margin-top: 34px;
    font-size: 21px;
  }

  .deepdoc-section p {
    font-size: 16px;
    line-height: 1.8;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero h1 {
    font-size: 36px;
  }

  .deepdoc-index-card {
    padding: 22px;
  }

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

  .scenario-matrix {
    grid-template-columns: 1fr;
  }

  .deepdoc-section h2 {
    font-size: 31px;
  }
}

@media (max-width: 390px) {
  .deepdoc-hero h1 {
    font-size: 32px;
  }

  .deepdoc-section h2 {
    font-size: 28px;
  }

  .deepdoc-section p {
    font-size: 15px;
  }
}