.tutorial-hero{
  position:relative;
  padding-top:72px;
  padding-bottom:70px;
  overflow-x:clip;
  border-bottom:1px solid var(--color-border);
}
.tutorial-hero::before{
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(var(--color-glow-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--color-glow-soft) 1px,transparent 1px);
  background-size:48px 48px;
  content:"";
}
.tutorial-hero::after{
  position:absolute;
  inset:8% 18% 0;
  pointer-events:none;
  background:radial-gradient(closest-side,var(--color-glow),transparent 72%);
  content:"";
}
.tutorial-hero-inner{
  position:relative;
  z-index:1;
  text-align:center;
}
.tutorial-hero h1{
  max-width:900px;
  margin:22px auto 0;
}
.tutorial-lead{
  max-width:760px;
  margin:20px auto 0;
  color:var(--color-text-soft);
  font-size:18px;
}
.tutorial-facts{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.tutorial-facts>span{
  max-width:100%;
  padding:6px 13px;
  overflow:hidden;
  color:var(--color-text-muted);
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.4;
}
.guide-wrap{
  padding-top:28px;
  padding-bottom:40px;
}
.guide-shell{
  display:grid;
  grid-template-columns:120px minmax(0,1fr);
  gap:32px;
  margin-top:58px;
}
.guide-rail{
  position:sticky;
  top:var(--toc-offset);
  height:fit-content;
  display:grid;
  gap:18px;
  padding-top:18px;
  color:var(--color-text-muted);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
}
.guide-rail span{
  display:flex;
  align-items:center;
  gap:9px;
}
.guide-rail span::before{
  width:18px;
  height:1px;
  flex-shrink:0;
  background:var(--color-border-strong);
  content:"";
}
.guide-content{
  min-width:0;
  border-top:1px solid var(--color-border);
}
.guide-step{
  min-width:0;
  display:grid;
  grid-template-columns:68px minmax(0,1fr);
  gap:26px;
  padding-top:72px;
  padding-bottom:72px;
  border-bottom:1px solid var(--color-border);
}
.step-marker{
  color:var(--color-accent-dark);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
}
.step-copy{
  min-width:0;
}
.step-copy h2{
  max-width:760px;
  margin:13px 0 28px;
}
.step-copy>p{
  max-width:800px;
  color:var(--color-text-soft);
}
.step-copy a:not(.btn){
  color:var(--color-accent);
  text-decoration:underline;
  text-decoration-color:var(--color-border-strong);
  text-underline-offset:3px;
}
.action-line{
  max-width:800px;
  display:flex;
  align-items:center;
  gap:18px;
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid var(--color-border);
}
.action-line span{
  color:var(--color-text-muted);
  font-size:13px;
}
.platform-guide{
  max-width:900px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin:32px 0;
}
.platform-note{
  min-width:0;
  padding:24px;
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-medium);
}
.platform-heading{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.platform-heading h3{
  margin:0;
  font-size:20px;
}
.platform-code{
  min-width:42px;
  padding:4px 7px;
  color:var(--color-ink);
  background:var(--color-accent);
  border-radius:var(--radius-small);
  font-family:var(--font-mono);
  font-size:10px;
  text-align:center;
}
.platform-note p{
  margin-bottom:0;
  color:var(--color-text-muted);
  font-size:14px;
}
.check-grid{
  max-width:900px;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
  margin-top:32px;
}
.check-grid div{
  min-width:0;
  padding:20px;
  background:var(--color-panel);
  border:1px solid var(--color-border);
  border-radius:var(--radius-small);
}
.check-grid strong,
.check-grid span{
  display:block;
}
.check-grid strong{
  margin-bottom:8px;
  color:var(--color-text);
  font-size:14px;
}
.check-grid span{
  color:var(--color-text-muted);
  font-size:13px;
}
.next-reading{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:end;
  gap:36px;
  margin-top:72px;
  padding:32px;
  background:var(--color-panel-raised);
  border:1px solid var(--color-border);
  border-radius:var(--radius-medium);
  box-shadow:var(--shadow-soft);
}
.next-reading h2{
  margin:12px 0 14px;
  font-size:clamp(27px,3vw,38px);
}
.next-reading p{
  max-width:760px;
  margin-bottom:0;
}
.next-links{
  min-width:190px;
  display:grid;
  gap:8px;
}
.next-links a{
  min-height:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:10px 14px;
  color:var(--color-text-soft);
  border:1px solid var(--color-border);
  border-radius:var(--radius-small);
  font-size:14px;
}
.next-links a:hover{
  color:var(--color-text);
  background:var(--color-panel);
  border-color:var(--color-border-strong);
}
@media (max-width:900px){
  .guide-shell{
    grid-template-columns:1fr;
  }
  .guide-rail{
    position:static;
    display:flex;
    flex-wrap:wrap;
    gap:10px 18px;
    padding-top:0;
  }
  .platform-guide{
    grid-template-columns:1fr;
  }
  .next-reading{
    grid-template-columns:1fr;
    align-items:start;
  }
}
@media (max-width:640px){
  .tutorial-hero{
    padding-top:48px;
    padding-bottom:52px;
  }
  .tutorial-hero::before{
    background-size:36px 36px;
  }
  .tutorial-lead{
    font-size:16px;
  }
  .guide-shell{
    gap:18px;
    margin-top:42px;
  }
  .guide-rail{
    display:none;
  }
  .guide-step{
    grid-template-columns:1fr;
    gap:12px;
    padding-top:54px;
    padding-bottom:54px;
  }
  .step-marker{
    width:fit-content;
    padding:3px 9px;
    border:1px solid var(--color-border);
    border-radius:var(--radius-pill);
  }
  .action-line{
    align-items:flex-start;
    flex-direction:column;
  }
  .platform-note{
    padding:20px;
  }
  .check-grid{
    grid-template-columns:1fr;
  }
  .next-reading{
    margin-top:54px;
    padding:22px;
  }
  .next-links{
    width:100%;
    min-width:0;
  }
}