:root{
  --bg:#0b1220;
  --card:#101a33;
  --text:#eaf0ff;
  --muted:#a9b6d7;
  --accent:#66d0ff;
  --accent2:#7cffb7;
  --border:rgba(255,255,255,.12);
  --shadow: 0 18px 60px rgba(0,0,0,.45);
  --radius: 18px;
  --max: 980px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:
    radial-gradient(1200px 800px at 15% 10%, rgba(102,208,255,.22), transparent 60%),
    radial-gradient(1000px 700px at 80% 15%, rgba(124,255,183,.18), transparent 55%),
    radial-gradient(1200px 800px at 50% 110%, rgba(120,140,255,.12), transparent 55%),
    var(--bg);
  line-height:1.55;
}

a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
header{
  position:sticky; top:0;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,.62);
  border-bottom:1px solid var(--border);
  z-index:50;
}
.nav{
  max-width:var(--max);
  margin:0 auto;
  padding:14px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:800; letter-spacing:.2px;
}
.logo{
  width:34px; height:34px; border-radius:12px;
  background: linear-gradient(145deg, rgba(102,208,255,.95), rgba(124,255,183,.92));
  box-shadow: 0 10px 24px rgba(102,208,255,.18);
  position:relative;
}
.logo::after{
  content:"";
  position:absolute; inset:7px;
  border-radius:10px;
  background: rgba(11,18,32,.35);
  border:1px solid rgba(255,255,255,.22);
}
.navlinks{display:flex; gap:14px; flex-wrap:wrap}
.navlinks a{
  color:var(--text);
  opacity:.9;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid transparent;
}
.navlinks a:hover{border-color:var(--border); background: rgba(255,255,255,.04)}

main{
  max-width:var(--max);
  margin:0 auto;
  padding:26px 18px 56px;
}
.hero{
  border:1px solid var(--border);
  background: linear-gradient(180deg, rgba(16,26,51,.82), rgba(16,26,51,.52));
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  padding:22px 20px;
  overflow:hidden;
  position:relative;
}
.badges{
  display:flex; gap:10px; flex-wrap:wrap;
  margin-top:14px;
}
.badge{
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  padding:7px 10px;
  border-radius:999px;
  color:var(--muted);
  font-size:13px;
}
.h1{
  font-size:34px;
  margin:0;
  line-height:1.15;
}
.sub{
  margin:10px 0 0;
  color:var(--muted);
  max-width:70ch;
}
.grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:16px;
  margin-top:16px;
}
@media (max-width: 860px){
  .grid{grid-template-columns:1fr}
  .h1{font-size:30px}
}
.card{
  border:1px solid var(--border);
  background: rgba(16,26,51,.62);
  border-radius:var(--radius);
  box-shadow: 0 10px 40px rgba(0,0,0,.25);
  padding:18px 18px;
}
.card h2{margin:0 0 10px; font-size:18px}
.card p{margin:0 0 8px; color:var(--muted)}
.btnrow{display:flex; gap:10px; flex-wrap:wrap; margin-top:14px}
.btn{
  display:inline-flex; align-items:center; gap:10px;
  border-radius:14px;
  padding:10px 12px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color:var(--text);
  font-weight:700;
}
.btn:hover{background: rgba(255,255,255,.08); text-decoration:none}
.kbd{
  font-family: var(--mono);
  font-size:12px;
  padding:3px 8px;
  border:1px solid var(--border);
  border-bottom-color: rgba(0,0,0,.35);
  border-radius:10px;
  background: rgba(0,0,0,.15);
  color: var(--muted);
}
article{
  margin-top:18px;
  border:1px solid var(--border);
  background: rgba(16,26,51,.55);
  border-radius:var(--radius);
  padding:22px 18px;
}
article h1{margin:0 0 8px; font-size:28px}
article h2{margin:24px 0 8px; font-size:18px}
article p, article li{color:var(--muted)}
article ul{margin:8px 0 0 20px}
hr{border:none; border-top:1px solid var(--border); margin:18px 0}
.footer{
  margin-top:20px;
  color:var(--muted);
  font-size:13px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
}
.small{font-size:13px; color:var(--muted)}
.notice{
  margin-top:10px;
  border:1px dashed rgba(255,255,255,.22);
  border-radius:14px;
  padding:12px 12px;
  background: rgba(0,0,0,.12);
  color: var(--muted);
}