.deepdoc-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  padding-top: 82px;
  padding-bottom: 82px;
}

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--color-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-line) 1px, transparent 1px);
  background-size: 46px 46px;
  content: "";
  opacity: 0.34;
  pointer-events: none;
}

.deepdoc-hero::after {
  position: absolute;
  top: -190px;
  right: -150px;
  width: 520px;
  height: 520px;
  border: 1px solid var(--color-accent-ring);
  border-radius: var(--radius-pill);
  background: var(--gradient-warm);
  content: "";
  opacity: 0.08;
  pointer-events: none;
}

.deepdoc-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: 72px;
}

.deepdoc-intro {
  max-width: 720px;
}

.deepdoc-intro h1 {
  margin-top: 24px;
  margin-bottom: 22px;
}

.deepdoc-lead {
  max-width: 680px;
  color: var(--color-text-soft);
  font-size: 20px;
  line-height: 1.75;
}

.deepdoc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.deepdoc-relation {
  max-width: 700px;
  margin-top: 28px;
  margin-bottom: 0;
  color: var(--color-text-soft);
  font-size: 14px;
}

.deepdoc-relation a,
.deepdoc-prose a {
  color: var(--color-accent-deep);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-ring);
  text-underline-offset: 0.22em;
}

.deepdoc-relation a:hover,
.deepdoc-prose a:hover {
  text-decoration-color: var(--color-accent);
}

.diagnostic-board {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.diagnostic-board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-text-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 18px 22px;
}

.diagnostic-route {
  position: relative;
  list-style: none;
  padding: 12px 24px 16px 58px;
}

.diagnostic-route::before {
  position: absolute;
  top: 32px;
  bottom: 36px;
  left: 34px;
  width: 2px;
  background: var(--gradient-warm);
  content: "";
}

.diagnostic-route li {
  position: relative;
  display: grid;
  gap: 2px;
  border-bottom: 1px solid var(--color-line);
  padding: 17px 0;
}

.diagnostic-route li:last-child {
  border-bottom: 0;
}

.diagnostic-route li::before {
  position: absolute;
  top: 25px;
  left: -29px;
  width: 11px;
  height: 11px;
  border: 3px solid var(--color-page);
  border-radius: var(--radius-pill);
  background: var(--gradient-warm);
  box-shadow: var(--shadow-beacon);
  content: "";
}

.diagnostic-route span {
  color: var(--color-text-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.diagnostic-route strong {
  color: var(--color-text);
  font-size: 15px;
}

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

.deepdoc-layout > .toc-tabs {
  margin-bottom: 0;
}

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

.manual-section {
  padding-top: 92px;
}

.manual-section + .manual-section {
  margin-top: 18px;
  border-top: 1px solid var(--color-line);
}

.manual-section h2 {
  margin-bottom: 34px;
}

.manual-section h3 {
  position: relative;
  margin-top: 42px;
  margin-bottom: 16px;
  padding-left: 20px;
}

.manual-section h3::before {
  position: absolute;
  top: 0.2em;
  bottom: 0.2em;
  left: 0;
  width: 4px;
  border-radius: var(--radius-pill);
  background: var(--gradient-warm);
  content: "";
}

.manual-section p,
.manual-section li {
  color: var(--color-text-soft);
}

.manual-section p {
  line-height: 1.9;
}

.manual-section .section-kicker {
  margin-bottom: 10px;
  color: var(--color-accent-deep);
}

.manual-section .callout {
  margin-top: 34px;
  margin-bottom: 34px;
}

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

.manual-section pre {
  position: relative;
  margin-top: 26px;
  margin-bottom: 28px;
  border: 1px solid var(--color-text);
  box-shadow: var(--shadow-card);
}

.manual-section pre::before {
  display: block;
  margin-bottom: 16px;
  color: var(--color-gold);
  content: "TERMINAL";
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.manual-section code {
  font-family: var(--font-mono);
}

.manual-section table td {
  color: var(--color-text-soft);
  vertical-align: top;
}

.manual-section table td:first-child {
  color: var(--color-text);
}

@media (max-width: 980px) {
  .deepdoc-hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .diagnostic-board {
    max-width: 700px;
  }
}

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

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

  .deepdoc-lead {
    font-size: 17px;
  }

  .manual-section {
    padding-top: 72px;
  }

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

@media (max-width: 640px) {
  .deepdoc-links {
    display: grid;
  }

  .diagnostic-board-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .diagnostic-route {
    padding-right: 18px;
    padding-left: 52px;
  }

  .diagnostic-route::before {
    left: 29px;
  }

  .diagnostic-route li::before {
    left: -28px;
  }

  .manual-section {
    padding-top: 62px;
  }

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

  .manual-section h3 {
    padding-left: 16px;
  }

  .manual-section p {
    line-height: 1.82;
  }
}