:root{
  --deepdoc-copy-width:920px;
  --deepdoc-aside-width:320px;
  --deepdoc-rule-width:3px;
  --deepdoc-code-size:14px;
}
.deepdoc-hero{
  position:relative;
  overflow-x:clip;
  max-width:100%;
  padding-top:88px;
  padding-bottom:82px;
  background:linear-gradient(158deg,var(--color-wash-a),var(--color-wash-b) 48%,var(--color-wash-c));
}
.deepdoc-glow{
  position:absolute;
  right:-12%;
  bottom:-34%;
  width:56%;
  max-width:760px;
  aspect-ratio:1;
  border-radius:50%;
  background:radial-gradient(circle,var(--color-accent-soft),var(--color-wash-b) 68%);
  pointer-events:none;
}
.deepdoc-hero-layout{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(260px,var(--deepdoc-aside-width));
  align-items:end;
  gap:72px;
}
.deepdoc-hero-copy{
  max-width:850px;
}
.deepdoc-hero-copy .badge{
  margin-bottom:22px;
}
.deepdoc-hero-copy h1{
  max-width:820px;
}
.deepdoc-hero-copy .accent-word{
  color:var(--color-accent);
}
.deepdoc-intro{
  max-width:780px;
  margin:26px 0 0;
  color:var(--color-text-muted);
  font-size:18px;
  line-height:1.8;
}
.deepdoc-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.deepdoc-meta span{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:4px 11px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-xs);
  background:var(--color-panel);
  color:var(--color-text-muted);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
}
.deepdoc-index-card{
  overflow:hidden;
  border:1px solid var(--color-border-soft);
  border-radius:var(--radius-md);
  background:var(--color-panel);
  box-shadow:var(--shadow-panel);
}
.index-card-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:16px 18px;
  border-bottom:1px solid var(--color-border);
  background:var(--color-panel-recessed);
}
.index-card-head span{
  color:var(--color-accent);
  font-size:11px;
  font-weight:800;
}
.index-card-head strong{
  font-size:14px;
}
.deepdoc-index-card dl{
  margin:0;
  padding:7px 18px;
}
.deepdoc-index-card dl div{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:14px;
  padding:12px 0;
  border-bottom:1px solid var(--color-border-soft);
}
.deepdoc-index-card dl div:last-child{
  border-bottom:0;
}
.deepdoc-index-card dt{
  color:var(--color-accent);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:750;
}
.deepdoc-index-card dd{
  margin:0;
  color:var(--color-text-muted);
  font-size:13px;
}
.deepdoc-shell{
  padding-top:72px;
  padding-bottom:var(--section-space);
}
.deepdoc-article{
  width:100%;
  max-width:var(--deepdoc-copy-width);
  margin-inline:auto;
}
.deepdoc-preface{
  padding:28px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  background:var(--color-panel);
  box-shadow:var(--shadow-card);
}
.deepdoc-preface p{
  color:var(--color-text-muted);
}
.deepdoc-preface p:last-child{
  margin-bottom:0;
}
.deepdoc-preface a,
.deepdoc-section p a{
  color:var(--color-accent);
  font-weight:700;
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:4px;
}
.deepdoc-section{
  padding-top:72px;
  padding-bottom:24px;
  border-bottom:1px solid var(--color-border);
}
.deepdoc-section:last-child{
  border-bottom:0;
}
.section-marker{
  display:inline-flex;
  margin-bottom:12px;
  color:var(--color-accent);
  font-size:11px;
  font-weight:800;
  letter-spacing:.08em;
}
.deepdoc-section h2{
  margin-bottom:32px;
}
.deepdoc-section h3{
  margin-top:34px;
  margin-bottom:14px;
  font-size:23px;
}
.deepdoc-section h2 + h3{
  margin-top:0;
}
.deepdoc-section p{
  color:var(--color-text-muted);
  line-height:1.9;
}
.deepdoc-section strong{
  color:var(--color-text);
}
.deepdoc-section .callout{
  margin-top:30px;
  margin-bottom:30px;
}
.deepdoc-section .data-table{
  min-width:760px;
}
.platform-table-wrap,
.quality-table-wrap,
.route-table-wrap{
  margin-top:30px;
  margin-bottom:32px;
  border-radius:var(--radius-md);
}
.diagnostic-box,
.error-flow{
  margin-top:32px;
  padding:24px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  background:var(--color-panel);
  box-shadow:var(--shadow-card);
}
.diagnostic-box h3,
.error-flow h3{
  margin-top:0;
}
.diagnostic-box pre{
  margin:20px 0;
  font-size:var(--deepdoc-code-size);
}
.error-flow ol{
  display:grid;
  gap:15px;
  margin:20px 0 0;
  padding-left:24px;
}
.error-flow li{
  padding-left:6px;
  color:var(--color-text-muted);
  line-height:1.8;
}
.error-flow li::marker{
  color:var(--color-accent);
  font-family:var(--font-mono);
  font-weight:800;
}
@media (max-width:960px){
  .deepdoc-hero-layout{
    grid-template-columns:1fr;
    gap:38px;
  }
  .deepdoc-index-card{
    max-width:620px;
  }
}
@media (max-width:768px){
  .deepdoc-hero{
    padding-top:64px;
    padding-bottom:62px;
  }
  .deepdoc-glow{
    right:-28%;
    bottom:-12%;
    width:82%;
  }
  .deepdoc-intro{
    font-size:16px;
  }
  .deepdoc-shell{
    padding-top:48px;
  }
  .deepdoc-section{
    padding-top:58px;
  }
  .deepdoc-section h3{
    font-size:21px;
  }
}
@media (max-width:640px){
  .deepdoc-hero{
    padding-top:48px;
    padding-bottom:50px;
  }
  .deepdoc-hero-layout{
    gap:28px;
  }
  .deepdoc-meta{
    gap:7px;
  }
  .deepdoc-index-card dl div{
    grid-template-columns:56px minmax(0,1fr);
  }
  .deepdoc-preface,
  .diagnostic-box,
  .error-flow{
    padding:20px;
  }
  .deepdoc-section{
    padding-top:52px;
  }
  .deepdoc-section h2{
    margin-bottom:26px;
  }
  .deepdoc-section h3{
    margin-top:30px;
  }
}