:root {
  --deepdoc-copy-width: 890px;
  --deepdoc-console-width: 560px;
  --deepdoc-rail-width: 82px;
  --deepdoc-chapter-gap: 76px;
}

.deepdoc-hero {
  position: relative;
  overflow: clip;
  border-bottom: 1px solid var(--color-border);
  padding-top: 62px;
  padding-bottom: 70px;
}

.deepdoc-hero::before {
  position: absolute;
  top: 24px;
  right: 5%;
  width: 42%;
  height: 78%;
  border-radius: var(--radius-md);
  background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
  background-size: 16px 16px;
  content: "";
  opacity: 0.72;
}

.deepdoc-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  align-items: center;
  gap: 56px;
}

.deepdoc-hero-copy {
  position: relative;
  z-index: 2;
}

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

.deepdoc-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  margin-bottom: 22px;
}

.diagnostic-console {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--deepdoc-console-width);
  justify-self: end;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-window);
}

.diagnostic-console::after {
  position: absolute;
  inset: 8px;
  z-index: -1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  content: "";
  transform: translate(12px, 12px);
}

.diagnostic-chrome {
  display: flex;
  min-height: 50px;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--color-border);
  padding-inline: 18px;
}

.diagnostic-chrome strong {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 850;
}

.diagnostic-chrome > .mono {
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.diagnostic-body {
  display: flex;
  min-height: 330px;
}

.diagnostic-rail {
  display: flex;
  width: var(--deepdoc-rail-width);
  flex: 0 0 auto;
  flex-direction: column;
  gap: 7px;
  border-right: 1px solid var(--color-border);
  padding: 16px 9px;
}

.diagnostic-rail span {
  border-left: 2px solid transparent;
  border-radius: var(--radius-xs);
  padding: 8px 7px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.diagnostic-rail span.is-active {
  border-left-color: var(--color-accent);
  background: var(--color-panel-deep);
  color: var(--color-accent);
  font-weight: 850;
}

.diagnostic-flow {
  display: grid;
  flex: 1;
  min-width: 0;
}

.diagnostic-row {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--color-border);
  padding: 13px 16px;
}

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

.diagnostic-row.is-current {
  background: var(--color-panel-deep);
}

.diagnostic-row > div {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.diagnostic-row strong {
  overflow: hidden;
  color: var(--color-text);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.diagnostic-row small {
  overflow: hidden;
  color: var(--color-text-muted);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.diagnostic-row .chip {
  margin-left: auto;
  flex: 0 0 auto;
  background: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 9px;
}

.diagnostic-footer {
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--color-border);
  padding-inline: 18px;
  color: var(--color-text-muted);
  font-size: 11px;
}

.diagnostic-footer strong {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
}

.deepdoc-article {
  position: relative;
  padding-top: 32px;
  padding-bottom: var(--section-space);
}

.deepdoc-article > .toc-tabs {
  margin-bottom: 58px;
}

.deepdoc-chapter {
  width: 100%;
  max-width: var(--deepdoc-copy-width);
  margin-inline: auto;
  padding-top: 18px;
}

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

.deepdoc-chapter h2 {
  max-width: 15em;
  margin-top: 0;
}

.deepdoc-chapter h3 {
  margin-top: 36px;
  font-size: 23px;
}

.deepdoc-chapter p,
.deepdoc-chapter li {
  font-size: 16px;
  line-height: 1.88;
}

.deepdoc-chapter p {
  margin-bottom: 20px;
}

.deepdoc-chapter .callout,
.deepdoc-chapter .table-scroll,
.deepdoc-chapter pre,
.ticket-checklist {
  margin-top: 30px;
  margin-bottom: 30px;
}

.deepdoc-chapter .callout {
  color: var(--color-text-muted);
  line-height: 1.8;
}

.deepdoc-chapter .callout strong {
  color: var(--color-accent);
}

.deepdoc-chapter .data-table,
.deepdoc-chapter .compare-table {
  font-size: 14px;
}

.deepdoc-chapter pre {
  line-height: 1.7;
}

.ticket-checklist {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  padding: 26px;
}

.ticket-checklist h3 {
  margin-top: 0;
  color: var(--color-accent);
}

.ticket-checklist ul {
  display: grid;
  gap: 9px;
  margin-bottom: 0;
  padding-left: 1.3em;
}

.ticket-checklist li::marker {
  color: var(--color-success);
}

@media (max-width: 1080px) {
  .deepdoc-hero-grid {
    grid-template-columns: 1fr;
  }

  .diagnostic-console {
    max-width: 760px;
    justify-self: stretch;
  }

  .deepdoc-hero::before {
    right: 0;
    width: 70%;
  }
}

@media (max-width: 768px) {
  :root {
    --deepdoc-chapter-gap: 58px;
  }

  .deepdoc-hero {
    padding-top: 42px;
    padding-bottom: 52px;
  }

  .deepdoc-hero-grid {
    gap: 38px;
  }

  .deepdoc-hero::before {
    top: auto;
    right: -20%;
    bottom: 0;
    width: 90%;
    height: 46%;
  }

  .deepdoc-hero-links {
    width: 100%;
  }

  .deepdoc-hero-links .btn-primary,
  .deepdoc-hero-links .btn-secondary {
    flex: 1 1 180px;
  }

  .diagnostic-console::after {
    display: none;
  }

  .diagnostic-rail {
    display: none;
  }

  .deepdoc-article {
    padding-top: 24px;
  }

  .deepdoc-article > .toc-tabs {
    margin-bottom: 42px;
  }

  .deepdoc-chapter h3 {
    margin-top: 30px;
    font-size: 21px;
  }

  .deepdoc-chapter p,
  .deepdoc-chapter li {
    font-size: 15px;
    line-height: 1.82;
  }
}

@media (max-width: 520px) {
  .deepdoc-hero-links .btn-primary,
  .deepdoc-hero-links .btn-secondary {
    width: 100%;
    flex-basis: 100%;
  }

  .diagnostic-chrome {
    padding-inline: 13px;
  }

  .diagnostic-chrome > .mono {
    display: none;
  }

  .diagnostic-row {
    gap: 9px;
    padding-inline: 12px;
  }

  .diagnostic-row small {
    white-space: normal;
  }

  .diagnostic-row .chip {
    display: none;
  }

  .diagnostic-footer {
    padding-inline: 13px;
  }

  .diagnostic-footer strong {
    display: none;
  }

  .ticket-checklist {
    padding: 20px;
  }
}