.tutorial-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--border);
  background:
    radial-gradient(ellipse at top right,var(--accent-glow-soft),transparent),
    linear-gradient(var(--grid-dot) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-dot) 1px,transparent 1px);
  background-size:auto,44px 44px,44px 44px;
}

.tutorial-hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
  opacity:.55;
}

.tutorial-hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(300px,38%);
  gap:clamp(36px,7vw,88px);
  align-items:center;
}

.tutorial-intro{min-width:0}

.tutorial-intro h1{
  max-width:720px;
  font-size:clamp(48px,5.2vw,68px);
}

.tutorial-lead{
  max-width:660px;
  margin:22px 0 30px;
  color:var(--text-muted);
  font-size:clamp(16px,1.7vw,19px);
}

.tutorial-facts{margin-top:26px}

.tutorial-route{
  position:relative;
  min-width:0;
  padding:28px;
  overflow:hidden;
}

.tutorial-route::before{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  left:32px;
  width:1px;
  background:linear-gradient(var(--accent),var(--accent-dark));
  box-shadow:0 0 14px var(--accent-glow-strong);
}

.route-label{
  position:relative;
  margin-bottom:22px;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
}

.route-list{
  position:relative;
  display:grid;
  gap:10px;
  list-style:none;
  counter-reset:route;
}

.route-list li{
  position:relative;
  display:grid;
  grid-template-columns:minmax(72px,auto) minmax(0,1fr);
  gap:14px;
  align-items:center;
  min-height:58px;
  padding:10px 12px 10px 38px;
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
}

.route-list li::before{
  content:"";
  position:absolute;
  left:-2px;
  width:9px;
  height:9px;
  background:var(--accent);
  border:3px solid var(--bg-panel-2);
  border-radius:var(--radius-pill);
  box-shadow:0 0 12px var(--accent-glow-strong);
}

.route-list span{
  color:var(--text-muted);
  font-family:var(--font-mono);
  font-size:11px;
}

.route-list strong{
  min-width:0;
  font-size:13px;
}

.tutorial-layout{
  padding-top:48px;
  padding-bottom:var(--section-space);
}

.tutorial-document{
  max-width:940px;
  margin-inline:auto;
}

.guide-step{
  display:grid;
  grid-template-columns:110px minmax(0,1fr);
  gap:28px;
  padding-top:58px;
  padding-bottom:58px;
  border-bottom:1px solid var(--border);
}

.guide-step:first-of-type{padding-top:20px}
.guide-step:last-child{border-bottom:0}

.step-marker{
  position:sticky;
  top:var(--toc-offset);
  align-self:start;
  padding-top:8px;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.15em;
}

.step-marker::after{
  content:"";
  display:block;
  width:42px;
  height:2px;
  margin-top:12px;
  background:var(--accent);
  box-shadow:0 0 12px var(--accent-glow-strong);
}

.step-content{min-width:0}

.step-content h2{
  margin-top:0;
  margin-bottom:24px;
  font-size:clamp(30px,4vw,44px);
}

.step-content h3{
  margin-top:0;
  font-size:21px;
}

.step-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}

.platform-guides{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin:30px 0;
}

.platform-guide{
  min-width:0;
  padding:24px;
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
}

.platform-guide:nth-child(even){background:var(--bg-panel-2)}

.platform-guide p{
  color:var(--text-muted);
  font-size:14px;
}

.platform-guide p+p{margin-top:14px}

.platform-guide .platform-kicker{
  margin-bottom:8px;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
}

.platform-guide h3+p{margin-top:12px}

@media (max-width:900px){
  .tutorial-hero-grid{grid-template-columns:1fr}
  .tutorial-route{max-width:680px}
  .guide-step{grid-template-columns:82px minmax(0,1fr);gap:20px}
}

@media (max-width:700px){
  .tutorial-intro h1{font-size:clamp(34px,10vw,40px)}
  .tutorial-layout{padding-top:30px}
  .guide-step{
    grid-template-columns:1fr;
    gap:14px;
    padding-top:46px;
    padding-bottom:46px;
  }
  .step-marker{
    position:static;
    display:flex;
    align-items:center;
    gap:12px;
    padding-top:0;
  }
  .step-marker::after{
    width:32px;
    margin-top:0;
  }
  .platform-guides{grid-template-columns:1fr}
}

@media (max-width:480px){
  .tutorial-route{padding:20px}
  .tutorial-route::before{left:24px}
  .route-list li{
    grid-template-columns:1fr;
    gap:2px;
    padding-left:30px;
  }
  .platform-guide{padding:20px}
  .step-actions .btn{width:100%}
}