.deepdoc-hero{
  position:relative;
  padding-top:clamp(72px,9vw,118px);
  padding-bottom:clamp(64px,8vw,104px);
  overflow-x:clip;
  border-bottom:1px solid var(--color-line);
}
.deepdoc-hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(to right,var(--color-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--color-line) 1px,transparent 1px),
    radial-gradient(circle at 78% 36%,var(--color-glow),transparent 28%);
  background-size:56px 56px,56px 56px,auto;
  opacity:.42;
}
.deepdoc-hero-inner{
  position:relative;
  z-index:1;
  max-width:980px;
}
.deepdoc-hero h1{
  max-width:880px;
  margin:22px 0 22px;
}
.deepdoc-hero .lead{
  max-width:820px;
  margin-bottom:28px;
}
.deepdoc-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid var(--color-line);
  color:var(--color-muted);
  font-size:14px;
}
.deepdoc-meta span{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.deepdoc-meta span::before{
  content:"";
  width:7px;
  height:7px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--color-accent);
}
.guide-bridge{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:26px;
  margin-top:34px;
  padding:24px 26px;
  background:var(--color-panel);
  border:1px solid var(--color-line);
  border-left:4px solid var(--color-accent);
  border-radius:var(--radius-sm);
  box-shadow:var(--shadow-card);
}
.guide-bridge p{
  margin:0;
  color:var(--color-muted);
}
.deepdoc-shell{
  position:relative;
}
.deepdoc-shell .toc-tabs{
  top:10px;
  margin-bottom:54px;
  box-shadow:var(--shadow-card);
}
.deepdoc-prose{
  max-width:var(--reading-width);
  margin-inline:auto;
}
.deepdoc-prose section{
  padding-top:28px;
  padding-bottom:76px;
  border-bottom:1px solid var(--color-line);
}
.deepdoc-prose section:last-child{
  border-bottom:0;
}
.deepdoc-prose h2{
  margin-bottom:24px;
}
.deepdoc-prose h3{
  margin-top:38px;
  margin-bottom:14px;
  font-size:clamp(21px,2vw,27px);
}
.deepdoc-prose p,
.deepdoc-prose li{
  color:var(--color-muted);
}
.deepdoc-prose p{
  margin-bottom:18px;
}
.deepdoc-prose strong{
  color:var(--color-text);
}
.deepdoc-prose a{
  color:var(--color-accent-deep);
  font-weight:700;
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.deepdoc-prose ol,
.deepdoc-prose ul{
  margin-bottom:22px;
}
.deepdoc-prose li+li{
  margin-top:10px;
}
.deepdoc-prose .callout{
  margin:26px 0;
}
.deepdoc-prose .table-scroll{
  margin:26px 0 34px;
  border-radius:var(--radius-sm);
}
.deepdoc-prose pre{
  margin:26px 0;
  border:1px solid var(--color-dark-line);
  box-shadow:var(--shadow-card);
}
.diagnostic-flow{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  margin:26px 0;
}
.diagnostic-step{
  position:relative;
  padding:20px;
  background:var(--color-panel-soft);
  border:1px solid var(--color-line);
  border-radius:var(--radius-sm);
}
.diagnostic-step strong{
  display:block;
  margin-bottom:7px;
}
.diagnostic-step p{
  margin:0;
  font-size:14px;
}
.ticket-checklist{
  margin:30px 0;
  padding:26px;
  background:var(--color-dark);
  color:var(--color-dark-text);
  border-radius:var(--radius-md);
  background-image:radial-gradient(var(--color-dark-line) 1px,transparent 1.4px);
  background-size:13px 13px;
}
.ticket-checklist h3{
  margin-top:0;
  color:var(--color-dark-text);
}
.ticket-checklist p,
.ticket-checklist li{
  color:var(--color-dark-muted);
}
.ticket-checklist strong{
  color:var(--color-dark-text);
}
.related-links{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  margin-top:30px;
}
.related-link{
  min-height:100%;
  padding:20px;
  background:var(--color-panel);
  border:1px solid var(--color-line);
  border-radius:var(--radius-sm);
}
.related-link strong{
  display:block;
  margin-bottom:7px;
}
.related-link span{
  display:block;
  color:var(--color-muted);
  font-size:14px;
}
@media (max-width:900px){
  .diagnostic-flow,
  .related-links{
    grid-template-columns:1fr;
  }
}
@media (max-width:640px){
  .deepdoc-hero{
    padding-top:56px;
    padding-bottom:58px;
  }
  .deepdoc-hero::before{
    background-size:38px 38px,38px 38px,auto;
  }
  .guide-bridge{
    grid-template-columns:1fr;
    padding:21px;
  }
  .guide-bridge .btn-secondary{
    width:100%;
  }
  .deepdoc-shell .toc-tabs{
    top:0;
    margin-inline:calc(var(--gutter) * -1);
    margin-bottom:42px;
  }
  .deepdoc-prose section{
    padding-bottom:58px;
  }
  .ticket-checklist{
    padding:22px 18px;
  }
}