:root{
  --bg: #0b1020;
  --panel: rgba(255,255,255,.06);
  --panel-2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --faint: rgba(255,255,255,.55);
  --border: rgba(255,255,255,.14);
  --brand: #7c5cff;
  --brand-2: #39d98a;
  --danger: #ff4d4d;
  --shadow: 0 18px 50px rgba(0,0,0,.45);
  --radius: 16px;
  --radius-sm: 12px;
  --max: 1080px;
}

@media (prefers-color-scheme: light){
  :root{
    --bg: #f7f8ff;
    --panel: rgba(10,20,40,.05);
    --panel-2: rgba(10,20,40,.08);
    --text: rgba(10,20,40,.92);
    --muted: rgba(10,20,40,.70);
    --faint: rgba(10,20,40,.55);
    --border: rgba(10,20,40,.12);
    --shadow: 0 18px 50px rgba(16,24,40,.14);
  }
}

*{box-sizing:border-box}
html{color-scheme: light dark}
body{
  margin:0;
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background:
    radial-gradient(1200px 700px at 10% 0%, rgba(124,92,255,.35), transparent 55%),
    radial-gradient(900px 600px at 85% 10%, rgba(57,217,138,.24), transparent 58%),
    radial-gradient(900px 900px at 50% 100%, rgba(124,92,255,.18), transparent 60%),
    var(--bg);
  color: var(--text);
}

a{color:inherit}
.skip{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{
  left: 16px; top: 16px; width:auto; height:auto; padding:10px 12px;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; z-index: 9999;
}

.wrap{max-width: var(--max); margin: 0 auto; padding: 28px 18px 56px;}

header{
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(12px);
  background: linear-gradient(to bottom, rgba(0,0,0,.22), rgba(0,0,0,0));
  border-bottom: 1px solid rgba(255,255,255,.06);
}
@media (prefers-color-scheme: light){
  header{background: linear-gradient(to bottom, rgba(255,255,255,.70), rgba(255,255,255,0)); border-bottom: 1px solid rgba(10,20,40,.08);}
}
.nav{
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  gap: 14px;
}
.brand{
  display:flex; align-items:center; gap: 10px;
  text-decoration:none;
  font-weight: 700;
  letter-spacing: .2px;
}
.badge{
  width: 34px; height: 34px; border-radius: 12px;
  display:grid; place-items:center;
  background: linear-gradient(140deg, var(--brand), rgba(57,217,138,.9));
  box-shadow: 0 12px 26px rgba(124,92,255,.22);
}
.navlinks{margin-left:auto; display:flex; gap: 12px; flex-wrap:wrap;}
.navlinks a{
  text-decoration:none;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  color: var(--muted);
}
.navlinks a:hover{border-color: var(--border); background: var(--panel);}

main{padding-top: 22px;}

.hero{
  padding: 30px 0 6px;
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 22px;
  align-items:start;
}
@media (max-width: 860px){
  .hero{grid-template-columns: 1fr; padding-top: 14px;}
}
.h1{
  font-size: clamp(32px, 4.5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.8px;
  margin: 0 0 10px;
}
.sub{
  margin: 0 0 18px;
  color: var(--muted);
  max-width: 62ch;
}
.cta{display:flex; gap: 12px; flex-wrap:wrap; align-items:center;}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  text-decoration:none;
  background: var(--panel);
  box-shadow: none;
}
.btn.primary{
  border-color: rgba(124,92,255,.35);
  background: linear-gradient(140deg, rgba(124,92,255,.95), rgba(57,217,138,.85));
  color: #07101b;
  font-weight: 700;
}
.btn:hover{transform: translateY(-1px); transition: transform 120ms ease;}

.card{
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card.pad{padding: 18px;}
.kicker{
  color: var(--faint);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 12px;
}
.title{
  font-size: 18px;
  font-weight: 750;
  margin: 6px 0 6px;
}
.muted{color: var(--muted)}
.grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
@media (max-width: 920px){
  .grid{grid-template-columns: 1fr;}
}
.mini{
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel);
}
.mini b{display:block; margin-bottom: 6px;}

.section{margin-top: 22px;}
.section h2{margin: 0 0 10px; font-size: 20px;}
.section p{margin: 0 0 10px;}

.callout{
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(124,92,255,.45);
  background: linear-gradient(120deg, rgba(124,92,255,.12), rgba(57,217,138,.08));
}

.fine{
  font-size: 14px;
  color: var(--muted);
}

footer{
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display:flex;
  gap: 14px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
}
.footlinks{display:flex; gap: 12px; flex-wrap:wrap;}
.footlinks a{color: var(--muted); text-decoration:none;}
.footlinks a:hover{color: var(--text);}

.doc{
  padding: 12px 0 0;
  max-width: 80ch;
}
.doc h1{margin: 0 0 8px; font-size: 32px; line-height: 1.15;}
.doc h2{margin: 20px 0 8px; font-size: 20px;}
.doc h3{margin: 14px 0 6px; font-size: 16px;}
.doc ul{margin: 8px 0 8px 22px;}
.doc li{margin: 6px 0;}
.doc a{color: var(--text); text-decoration: underline;}
.toc{
  margin: 14px 0 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel);
}
.toc a{color: var(--muted); text-decoration:none;}
.toc a:hover{color: var(--text); text-decoration: underline;}