:root{
  --bg:#0b0f19;
  --card:#0f172a;
  --muted:#94a3b8;
  --text:#e2e8f0;
  --brand:#38bdf8;
  --border:rgba(148,163,184,.2);
  --shadow:0 12px 30px rgba(0,0,0,.25);
  --radius:16px;
  --max:980px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, rgba(56,189,248,.14), transparent 60%),
              radial-gradient(900px 500px at 100% 20%, rgba(167,139,250,.10), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:0 18px}
.topbar{
  position:sticky;top:0;z-index:50;
  background: rgba(11,15,25,.72);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0; gap:12px;
}
.brand{
  display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px;
  color:var(--text);
}
.logo{
  width:34px;height:34px;border-radius:10px;
  background: linear-gradient(135deg, rgba(56,189,248,.95), rgba(167,139,250,.75));
  box-shadow: 0 10px 22px rgba(56,189,248,.12);
}
.navlinks{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.navlinks a{
  color:var(--text);
  padding:8px 10px;border-radius:12px;
  border:1px solid transparent;
}
.navlinks a:hover{border-color:var(--border);text-decoration:none;background:rgba(148,163,184,.06)}
.hero{
  padding:42px 0 20px;
}
.kicker{
  color:var(--muted);font-weight:600;font-size:14px;letter-spacing:.3px;
}
h1{font-size:38px;line-height:1.15;margin:10px 0 10px}
.lead{color:var(--muted);font-size:18px;max-width:70ch;margin:0 0 18px}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 6px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 14px;border-radius:14px;font-weight:700;
  border:1px solid var(--border); color:var(--text);
  background:rgba(148,163,184,.06);
  box-shadow:none;
}
.btn.primary{
  background: linear-gradient(135deg, rgba(56,189,248,.95), rgba(167,139,250,.85));
  border-color: rgba(56,189,248,.35);
  color:#07131b;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;margin:18px 0 28px}
.card{
  grid-column: span 12;
  background: rgba(15,23,42,.74);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
.card h2{margin:0 0 6px;font-size:20px}
.card p{margin:0;color:var(--muted)}
@media(min-width:760px){
  .card.span6{grid-column: span 6}
  .card.span4{grid-column: span 4}
  h1{font-size:44px}
}
.section-title{font-size:18px;margin:22px 0 10px}
.list{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.item{
  padding:12px 14px;border-radius:14px;border:1px solid var(--border);
  background: rgba(148,163,184,.05);
}
.item .meta{color:var(--muted);font-size:13px}
.breadcrumbs{
  margin:12px 0 0;color:var(--muted);font-size:13px
}
.breadcrumbs a{color:var(--muted)}
.content{
  padding:16px 0 34px;
}
article{
  background: rgba(15,23,42,.62);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
article h1{font-size:34px;margin-top:0}
article h2{margin:20px 0 8px;font-size:20px}
article p{color:var(--text)}
article .muted{color:var(--muted)}
.footer{
  border-top:1px solid var(--border);
  padding:22px 0 40px;
  color:var(--muted);
}
.footer .cols{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
.footer .col{grid-column:span 12}
@media(min-width:760px){
  .footer .col{grid-column:span 4}
}
.small{font-size:13px;color:var(--muted)}
hr.sep{border:0;border-top:1px solid var(--border);margin:18px 0}

table{width:100%;border-collapse:collapse;margin:12px 0;overflow:hidden;border-radius:12px}
th,td{border:1px solid var(--border);padding:10px;vertical-align:top}
th{background:rgba(148,163,184,.08);text-align:left}
kbd,code{background:rgba(148,163,184,.10);border:1px solid var(--border);padding:2px 6px;border-radius:8px;font-size:0.95em}