.page-deepdoc {
  background: var(--gradient-page);
}

.deepdoc-hero {
  position: relative;
  max-width: 100%;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background: var(--gradient-page);
}

.deepdoc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(56% 82% at 92% 4%, var(--color-glow-accent), transparent 72%),
    radial-gradient(42% 58% at 10% 94%, var(--color-glow-cyan-soft), transparent 74%);
  pointer-events: none;
}

.deepdoc-halo {
  position: absolute;
  top: -18%;
  right: -8%;
  width: 48%;
  height: 112%;
  border-radius: 50%;
  background: linear-gradient(225deg, var(--color-glow-accent), var(--color-glow-cyan));
  filter: blur(54px);
  pointer-events: none;
}

.deepdoc-route-art {
  position: absolute;
  right: 4%;
  bottom: 4%;
  width: min(48%, 720px);
  color: var(--color-cyan);
  opacity: .22;
  pointer-events: none;
}

.deepdoc-route-art path {
  stroke-width: 2;
  stroke-linecap: round;
}

.deepdoc-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, .72fr);
  align-items: center;
  gap: 64px;
  min-height: 520px;
  padding-top: 72px;
  padding-bottom: 72px;
}

.deepdoc-hero-copy {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.deepdoc-hero-copy h1 {
  margin-top: 20px;
}

.deepdoc-lead {
  max-width: 700px;
  margin-top: 22px;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.8;
}

.deepdoc-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.diagnostic-console {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1.5px solid var(--color-cyan);
  border-radius: var(--radius-md);
  background: var(--color-panel-glass);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(10px);
}

.diagnostic-console-body {
  display: grid;
  gap: 4px;
  padding: 18px;
}

.diagnostic-line {
  display: grid;
  grid-template-columns: 72px 1fr;
  align-items: center;
  min-height: 46px;
  padding-inline: 12px;
  border-radius: var(--radius-xs);
  background: var(--color-accent-soft);
}

.diagnostic-line:nth-child(even) {
  background: var(--color-cyan-soft);
}

.diagnostic-line span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.diagnostic-line strong {
  color: var(--color-text);
  font-size: 14px;
}

.deepdoc-intro {
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-alt);
}

.deepdoc-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: 46px;
  align-items: center;
}

.deepdoc-intro p {
  color: var(--color-text-muted);
  font-size: 16px;
}

.deepdoc-intro a {
  color: var(--color-accent-dark);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: var(--color-cyan);
  text-underline-offset: 3px;
}

.deepdoc-kicker {
  display: block;
  margin-bottom: 8px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.deepdoc-fact {
  padding-left: 24px;
  border-left: 3px solid var(--color-cyan);
}

.deepdoc-fact strong {
  color: var(--color-text);
  font-size: 14px;
}

.deepdoc-fact p {
  margin-top: 5px;
  font-size: 14px;
}

.deepdoc-body {
  position: relative;
  padding-top: 58px;
  padding-bottom: 104px;
}

.deepdoc-body .toc-tabs {
  margin-top: 0;
}

.deepdoc-section {
  position: relative;
  max-width: 980px;
  margin-inline: auto;
  padding-top: 42px;
}

.deepdoc-section + .deepdoc-section {
  margin-top: 72px;
  padding-top: 72px;
  border-top: 1px solid var(--color-border);
}

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

.deepdoc-section h2 {
  max-width: 820px;
  margin-top: 0;
}

.deepdoc-section h3 {
  margin-top: 38px;
  padding-left: 16px;
  border-left: 3px solid var(--color-accent);
  font-size: clamp(21px, 2.2vw, 27px);
}

.deepdoc-section p {
  max-width: 900px;
}

.section-marker {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}

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

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

.deepdoc-section pre {
  margin-top: 18px;
  margin-bottom: 18px;
}

.deepdoc-section pre code {
  color: var(--color-on-dark);
}

.support-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 30px;
  margin-top: 40px;
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--gradient-deep);
  box-shadow: var(--shadow-card);
}

.support-action strong {
  color: var(--color-on-dark);
  font-family: var(--font-display);
  font-size: 20px;
}

.support-action p {
  margin-top: 6px;
  color: var(--color-on-dark-muted);
  font-size: 14px;
}

.support-action .button {
  text-decoration: none;
}

@media (max-width: 1024px) {
  .deepdoc-hero-inner {
    grid-template-columns: 1fr;
    gap: 42px;
    min-height: auto;
  }

  .diagnostic-console {
    width: min(100%, 680px);
  }

  .deepdoc-route-art {
    width: 70%;
  }
}

@media (max-width: 820px) {
  .deepdoc-intro-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .deepdoc-fact {
    padding-top: 4px;
    padding-left: 18px;
  }

  .support-action {
    grid-template-columns: 1fr;
  }

  .support-action .button {
    width: fit-content;
  }
}

@media (max-width: 768px) {
  .deepdoc-halo,
  .deepdoc-route-art {
    display: none;
  }

  .deepdoc-hero-inner {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .deepdoc-lead {
    font-size: 16px;
  }

  .diagnostic-console {
    background: var(--color-panel);
    backdrop-filter: none;
  }

  .deepdoc-body {
    padding-top: 42px;
    padding-bottom: 76px;
  }

  .deepdoc-section + .deepdoc-section {
    margin-top: 54px;
    padding-top: 54px;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .deepdoc-hero-actions .button {
    width: 100%;
  }

  .diagnostic-console-body {
    padding: 12px;
  }

  .diagnostic-line {
    grid-template-columns: 62px 1fr;
    padding-inline: 9px;
  }

  .deepdoc-section h3 {
    padding-left: 12px;
  }

  .support-action {
    padding: 22px;
  }

  .support-action .button {
    width: 100%;
  }
}