:root{
  --bg:#0b1220;
  --card:#0f1a33;
  --text:#e6e9f2;
  --muted:#aab3c5;
  --accent:#61dafb;
  --border:rgba(255,255,255,.08);
  --max: 980px;
  --radius: 14px;
}
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 20% 10%, rgba(97,218,251,.18), transparent 60%),
              radial-gradient(900px 500px at 80% 20%, rgba(124,92,255,.16), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{ color:var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }
.container{ width:min(var(--max), 92vw); margin:0 auto; }

header{
  position:sticky;
  top:0;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,.65);
  border-bottom: 1px solid var(--border);
  z-index:10;
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  gap:16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--text);
}
.brand .dot{
  width:10px; height:10px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 20px rgba(97,218,251,.6);
}
.navlinks{ display:flex; gap:14px; flex-wrap:wrap; }
.navlinks a{
  color:var(--text);
  opacity:.9;
  padding:8px 10px;
  border-radius:10px;
}
.navlinks a:hover{
  background: rgba(255,255,255,.06);
  text-decoration:none;
}

.hero{ padding:56px 0 22px; }
.hero h1{
  margin:0 0 10px;
  font-size: clamp(28px, 4.2vw, 44px);
  line-height:1.15;
}
.hero p{
  margin:0;
  color:var(--muted);
  font-size: clamp(15px, 1.8vw, 18px);
}

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:16px;
  padding: 18px 0 56px;
}

.card{
  grid-column: span 6;
  background: rgba(15,26,51,.75);
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding:18px;
}
.card h2{ margin:0 0 6px; font-size:18px; }
.card p{ margin:0; color:var(--muted); }

@media (max-width: 840px){
  .card{ grid-column: span 12; }
}

.badge{
  display:inline-block;
  font-size:12px;
  color: var(--text);
  background: rgba(255,255,255,.07);
  border: 1px solid var(--border);
  padding:4px 10px;
  border-radius:999px;
  margin-right:6px;
  margin-top:8px;
}

.footer{
  border-top:1px solid var(--border);
  padding:24px 0 40px;
  color:var(--muted);
  font-size:14px;
}

.small{ font-size:14px; color:var(--muted); }
hr.sep{
  border:none;
  border-top:1px solid var(--border);
  margin:20px 0;
}

.article{ padding: 28px 0 60px; }
.article h1{ margin-top:0; }
.article .meta{ color:var(--muted); font-size:14px; }
.article code{
  background: rgba(255,255,255,.06);
  padding:2px 6px;
  border-radius:8px;
}
.article pre{
  background: rgba(0,0,0,.25);
  padding:14px;
  border:1px solid var(--border);
  border-radius: var(--radius);
  overflow:auto;
}