:root {
  --deepdoc-copy-max: 980px;
  --deepdoc-aside-max: 420px;
  --deepdoc-rule-width: 3px;
}

.deepdoc-hero {
  padding-top: 26px;
  padding-bottom: 54px;
  overflow-x: clip;
}

.deepdoc-hero__card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .75fr);
  min-height: 500px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-hero);
  box-shadow: var(--shadow-card);
}

.deepdoc-hero__card::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-hero-dot) 1px, transparent 1px);
  background-size: 25px 25px;
  content: "";
  pointer-events: none;
}

.deepdoc-hero__copy {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  flex-direction: column;
  padding: 58px;
}

.deepdoc-hero h1 {
  max-width: 760px;
  margin: 24px 0 18px;
  color: var(--color-hero-text);
  font-size: clamp(52px, 5vw, 68px);
  font-weight: 900;
}

.deepdoc-hero__lead {
  max-width: 720px;
  margin: 0;
  color: var(--color-hero-muted);
  font-size: 17px;
  line-height: 1.85;
}

.deepdoc-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.deepdoc-facts span {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  padding: 6px 11px;
  overflow: hidden;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-pill);
  background: var(--color-hero-glass);
  color: var(--color-hero-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.deepdoc-hero__index {
  position: relative;
  z-index: 1;
  align-self: center;
  width: calc(100% - 42px);
  max-width: var(--deepdoc-aside-max);
  margin-right: 42px;
  overflow: hidden;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-md);
  background: var(--color-hero-panel);
}

.deepdoc-hero__index-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 17px;
  border-bottom: 1px solid var(--color-hero-line);
  color: var(--color-hero-faint);
  font-family: var(--font-mono);
  font-size: 11px;
}

.deepdoc-hero__index ul {
  margin: 0;
  padding: 8px;
  list-style: none;
}

.deepdoc-hero__index li {
  display: grid;
  grid-template-columns: minmax(90px, .65fr) minmax(0, 1fr);
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-hero-tag);
  border-radius: var(--radius-xs);
  color: var(--color-hero-muted);
  font-size: 12px;
}

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

.deepdoc-hero__index li:hover {
  box-shadow: inset 0 0 0 1px var(--color-warning);
}

.deepdoc-hero__index code {
  color: var(--color-accent);
}

.deepdoc-article {
  max-width: 1180px;
}

.deepdoc-intro {
  max-width: var(--deepdoc-copy-max);
  margin-inline: auto;
  margin-bottom: 34px;
  padding: 26px;
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-muted);
  font-size: 16px;
}

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

.deepdoc-toc {
  max-width: var(--deepdoc-copy-max);
  margin-inline: auto;
  margin-bottom: 44px;
}

.deepdoc-content {
  max-width: var(--deepdoc-copy-max);
  margin-inline: auto;
}

.deepdoc-chapter {
  position: relative;
  padding-top: 58px;
  padding-bottom: 58px;
  border-bottom: 1px solid var(--color-line);
}

.deepdoc-chapter:first-child {
  padding-top: 18px;
}

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

.chapter-label {
  margin-bottom: 8px;
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
}

.deepdoc-chapter h2 {
  margin-bottom: 30px;
  font-size: clamp(30px, 4vw, 46px);
}

.deepdoc-chapter h3 {
  position: relative;
  margin-top: 38px;
  margin-bottom: 14px;
  padding-left: 16px;
  font-size: 23px;
}

.deepdoc-chapter h3::before {
  position: absolute;
  top: .22em;
  bottom: .22em;
  left: 0;
  width: var(--deepdoc-rule-width);
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  content: "";
}

.deepdoc-chapter p,
.deepdoc-chapter li {
  line-height: 1.92;
}

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

.deepdoc-chapter .table-scroll {
  margin-top: 28px;
  margin-bottom: 34px;
  box-shadow: 0 2px 6px var(--color-shadow-soft);
}

.deepdoc-chapter pre {
  margin-top: 26px;
  margin-bottom: 30px;
}

.deepdoc-chapter .callout {
  margin-top: 30px;
  margin-bottom: 30px;
}

@media (max-width: 1040px) {
  .deepdoc-hero__card {
    grid-template-columns: 1fr;
  }

  .deepdoc-hero__copy {
    padding: 44px 34px 24px;
  }

  .deepdoc-hero__index {
    width: auto;
    max-width: none;
    margin: 0 34px 34px;
  }
}

@media (max-width: 768px) {
  .deepdoc-hero {
    padding-top: 16px;
    padding-bottom: 42px;
  }

  .deepdoc-hero__card {
    min-height: 0;
    border-radius: var(--radius-md);
  }

  .deepdoc-hero__copy {
    padding: 34px 22px 22px;
  }

  .deepdoc-hero h1 {
    font-size: clamp(28px, 9vw, 40px);
  }

  .deepdoc-hero__lead {
    font-size: 15px;
  }

  .deepdoc-hero__index {
    margin: 0 22px 22px;
  }

  .deepdoc-intro {
    padding: 21px;
  }

  .deepdoc-chapter {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .deepdoc-chapter h2 {
    font-size: clamp(28px, 8vw, 38px);
  }

  .deepdoc-chapter h3 {
    font-size: 21px;
  }
}

@media (max-width: 480px) {
  .deepdoc-hero__copy {
    padding-inline: 18px;
  }

  .deepdoc-hero__index {
    margin-inline: 18px;
  }

  .deepdoc-hero__index li {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .deepdoc-facts {
    align-items: flex-start;
    flex-direction: column;
  }

  .deepdoc-intro {
    padding: 18px;
  }

  .deepdoc-chapter h3 {
    padding-left: 13px;
  }
}