.manual-hero{
  position:relative;
  overflow-x:clip;
  border-top:1px solid var(--color-line);
  border-bottom:1px solid var(--color-line);
  background:
    linear-gradient(var(--color-line),var(--color-line)) center top/1px 100% no-repeat,
    radial-gradient(circle at left center,var(--color-accent-soft),transparent 38%),
    var(--color-panel);
}
.manual-hero::before,
.manual-hero::after{
  content:"";
  position:absolute;
  border:1px solid var(--color-line);
  border-radius:var(--radius-pill);
  pointer-events:none;
}
.manual-hero::before{
  width:260px;
  height:96px;
  top:42px;
  left:-112px;
  transform:rotate(-8deg);
}
.manual-hero::after{
  width:320px;
  height:118px;
  right:-156px;
  bottom:34px;
  transform:rotate(9deg);
}
.manual-hero .reading{
  position:relative;
  z-index:1;
  text-align:center;
}
.manual-badge{
  margin-bottom:18px;
}
.manual-hero .eyebrow{
  margin-bottom:12px;
}
.manual-hero h1{
  margin-bottom:20px;
}
.manual-hero .lead{
  max-width:740px;
  margin-inline:auto;
}
.manual-actions{
  justify-content:center;
  margin-top:28px;
}
.manual-facts{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  margin-top:42px;
  overflow:hidden;
  border:1px solid var(--color-line);
  border-radius:var(--radius-card);
  background:var(--color-line);
  box-shadow:var(--shadow-card);
  text-align:left;
}
.manual-facts span{
  display:flex;
  min-height:90px;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  padding:16px 20px;
  background:var(--color-canvas);
  color:var(--color-muted);
  font-size:.82rem;
}
.manual-facts strong{
  color:var(--color-ink);
  font-family:var(--font-mono);
  font-size:1rem;
}
.manual-shell{
  padding-top:clamp(48px,7vw,84px);
  padding-bottom:var(--section-space);
}
.manual-article{
  width:100%;
  max-width:920px;
  margin-inline:auto;
}
.manual-intro{
  padding:clamp(22px,4vw,34px);
  border-left:4px solid var(--color-accent);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  background:var(--color-panel);
}
.manual-intro p:last-child{
  margin-bottom:0;
}
.manual-article .toc-tabs{
  margin-top:30px;
  margin-bottom:54px;
}
.article-body{
  width:100%;
}
.manual-chapter{
  position:relative;
  padding-top:42px;
  padding-bottom:68px;
  border-top:1px solid var(--color-line);
}
.manual-chapter:first-child{
  border-top:0;
  padding-top:0;
}
.chapter-code{
  display:inline-flex;
  margin-bottom:14px;
  padding:5px 11px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-pill);
  background:var(--color-panel);
  color:var(--color-accent-deep);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
}
.manual-chapter h2{
  max-width:760px;
  margin-bottom:32px;
}
.manual-chapter h3{
  position:relative;
  margin-top:38px;
  margin-bottom:14px;
  padding-left:18px;
  font-size:clamp(20px,2vw,25px);
}
.manual-chapter h3::before{
  content:"";
  position:absolute;
  top:.22em;
  bottom:.22em;
  left:0;
  width:5px;
  border-radius:var(--radius-pill);
  background:linear-gradient(var(--color-accent),var(--color-accent-blue));
}
.manual-chapter p{
  font-size:1.02rem;
  line-height:1.9;
}
.manual-chapter a{
  font-weight:700;
}
.manual-chapter .table-scroll{
  margin-block:30px;
  box-shadow:var(--shadow-card);
}
.manual-chapter pre{
  margin-block:22px;
}
.manual-chapter .callout{
  margin-block:30px;
}
.manual-article .promo-block{
  margin-top:32px;
}
@media(max-width:900px){
  .manual-facts{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}
@media(max-width:768px){
  .manual-hero::before,
  .manual-hero::after{
    display:none;
  }
  .manual-facts span{
    min-height:76px;
    padding:14px;
  }
  .manual-article .toc-tabs{
    margin-bottom:40px;
  }
  .manual-chapter{
    padding-top:34px;
    padding-bottom:54px;
  }
  .manual-chapter p{
    font-size:1rem;
    line-height:1.82;
  }
}
@media(max-width:480px){
  .manual-facts{
    grid-template-columns:1fr;
  }
  .manual-facts span{
    min-height:68px;
  }
}