.deepdoc-hero{
  position:relative;
  max-width:100%;
  overflow-x:clip;
  border-bottom:1px solid var(--color-border);
  background:
    radial-gradient(640px 420px at 78% 20%,var(--color-accent-halo),transparent 72%),
    radial-gradient(980px 540px at 38% -180px,var(--color-glow),transparent 78%),
    linear-gradient(180deg,var(--color-glow),var(--color-page));
}
.deepdoc-hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.38;
  background-image:
    linear-gradient(var(--color-accent-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--color-accent-soft) 1px,transparent 1px);
  background-size:36px 36px;
  mask-image:linear-gradient(to bottom,var(--color-text),transparent 78%);
}
.deepdoc-halo{
  position:absolute;
  top:30px;
  right:8%;
  width:280px;
  height:280px;
  border:1px solid var(--color-accent-line);
  border-radius:50%;
  opacity:.3;
}
.deepdoc-halo::before,
.deepdoc-halo::after{
  content:"";
  position:absolute;
  border:1px dashed var(--color-accent-line);
  border-radius:50%;
}
.deepdoc-halo::before{inset:34px}
.deepdoc-halo::after{inset:82px}
.deepdoc-hero__inner{
  position:relative;
  z-index:2;
  padding-top:clamp(70px,9vw,118px);
  padding-bottom:clamp(62px,8vw,104px);
}
.deepdoc-hero h1{
  max-width:760px;
  margin-top:22px;
  margin-bottom:20px;
}
.deepdoc-lede{
  max-width:760px;
  color:var(--color-muted);
  font-size:clamp(17px,2vw,20px);
  line-height:1.8;
}
.deepdoc-hero .button-row{margin-top:28px}
.deepdoc-facts{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:10px;
  margin:38px 0 0;
  padding:0;
  list-style:none;
}
.deepdoc-facts li{
  min-width:0;
  padding:15px 16px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  background:var(--color-highlight);
  box-shadow:var(--shadow-card);
}
.deepdoc-facts strong{
  display:block;
  color:var(--color-accent-dark);
  font:750 15px/1.3 var(--font-mono);
}
.deepdoc-facts span{
  display:block;
  margin-top:5px;
  color:var(--color-muted);
  font-size:12px;
}
.deepdoc-body{
  padding-top:clamp(56px,8vw,96px);
  padding-bottom:var(--section-space);
}
.manual-intro{
  padding:clamp(22px,4vw,34px);
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  background:var(--color-surface);
  box-shadow:var(--shadow-float);
}
.manual-intro p:last-child{margin-bottom:0}
.manual-section{
  position:relative;
  padding-top:clamp(58px,8vw,92px);
  padding-bottom:clamp(20px,4vw,42px);
  border-bottom:1px solid var(--color-border);
}
.manual-section:last-child{border-bottom:0}
.manual-section h2{
  margin-top:10px;
  margin-bottom:30px;
}
.manual-section h3{
  margin-top:42px;
  padding-top:14px;
  border-top:1px dashed var(--color-border);
  font-size:clamp(21px,2.6vw,27px);
}
.manual-section p,
.manual-section li{
  color:var(--color-muted);
}
.manual-section p{
  line-height:1.88;
}
.chapter-mark{
  display:inline-flex;
  min-height:26px;
  align-items:center;
  padding:4px 9px;
  border:1px solid var(--color-accent-line);
  border-radius:var(--radius-xs);
  background:var(--color-accent-soft);
  color:var(--color-accent-dark);
  font:700 10px/1 var(--font-mono);
  letter-spacing:.08em;
}
.manual-section .table-scroll{
  margin-top:28px;
  margin-bottom:34px;
}
.manual-section pre{
  margin-top:24px;
  margin-bottom:28px;
}
.manual-section .callout{
  margin-top:34px;
  margin-bottom:34px;
}
.manual-section .promo-block{
  margin-bottom:18px;
}
@media (max-width:768px){
  .deepdoc-halo{display:none}
  .deepdoc-facts{grid-template-columns:1fr 1fr}
  .deepdoc-hero::after{background-size:28px 28px}
}
@media (max-width:640px){
  .deepdoc-facts{grid-template-columns:1fr}
  .deepdoc-hero__inner{
    padding-top:52px;
    padding-bottom:58px;
  }
  .deepdoc-body{padding-top:48px}
  .manual-intro{padding:20px}
  .manual-section{
    padding-top:58px;
    padding-bottom:22px;
  }
  .manual-section h3{margin-top:34px}
}
@media (prefers-reduced-motion:reduce){
  .deepdoc-halo{transform:none}
}