:root{
  --bg:#0b1220;
  --panel:#0f1a2e;
  --panel2:#121f36;
  --text:#e9eefc;
  --muted:#a9b5d6;
  --accent:#7aa7ff;
  --accent2:#59e3c3;
  --border:rgba(255,255,255,.10);
  --shadow: 0 12px 34px rgba(0,0,0,.35);
  --radius:16px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:var(--sans);background:radial-gradient(1200px 600px at 20% 0%, rgba(122,167,255,.20), transparent 55%),
radial-gradient(900px 500px at 80% 10%, rgba(89,227,195,.18), transparent 55%),
var(--bg); color:var(--text);}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:24px}
.header{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(180%) blur(12px);
  background:rgba(11,18,32,.72);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex; gap:16px; align-items:center; justify-content:space-between; padding:14px 24px; max-width:1100px; margin:0 auto;}
.logo{display:flex; gap:10px; align-items:center}
.logo-badge{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg, rgba(122,167,255,.95), rgba(89,227,195,.85));
  box-shadow: var(--shadow);
}
.logo-title{display:flex; flex-direction:column; line-height:1.1}
.logo-title strong{font-size:14px; letter-spacing:.2px}
.logo-title span{font-size:12px; color:var(--muted)}
.nav{display:flex; gap:12px; flex-wrap:wrap; align-items:center; justify-content:flex-end}
.nav a{font-size:13px; color:var(--text); padding:8px 10px; border-radius:12px; border:1px solid transparent}
.nav a:hover{background:rgba(255,255,255,.06); border-color:var(--border); text-decoration:none}
.nav a.active{background:rgba(122,167,255,.12); border-color:rgba(122,167,255,.25)}
.hero{padding:28px 0 10px}
.hero h1{font-size:34px; margin:0 0 10px}
.hero p{margin:0 0 18px; color:var(--muted); max-width:70ch}
.grid{display:grid; gap:16px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width: 900px){.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}
.card{
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  padding:16px;
}
.card h3{margin:0 0 8px; font-size:16px}
.card p{margin:0; color:var(--muted); font-size:13px; line-height:1.55}
.kbd{font-family:var(--mono); font-size:12px; padding:2px 7px; border-radius:10px; border:1px solid var(--border); background:rgba(255,255,255,.06)}
.search{display:flex; gap:10px; align-items:center; margin:10px 0 18px}
.search input{
  width:100%; padding:12px 14px; border-radius:14px; border:1px solid var(--border);
  background:rgba(255,255,255,.06); color:var(--text); outline:none;
}
.search input:focus{border-color:rgba(122,167,255,.55); box-shadow:0 0 0 4px rgba(122,167,255,.14)}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12px; color:var(--muted);
  padding:6px 10px; border-radius:999px;
  border:1px solid var(--border); background:rgba(255,255,255,.05);
}
.layout{display:grid; grid-template-columns:280px minmax(0,1fr); gap:18px; padding:18px 0}
@media (max-width: 900px){.layout{grid-template-columns:1fr}}
.sidebar{
  position:sticky; top:78px; align-self:start;
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  padding:12px;
}
.sidebar h4{margin:8px 10px 6px; font-size:13px; color:var(--muted); font-weight:600}
.side-links{display:flex; flex-direction:column}
.side-links a{
  padding:10px 10px; border-radius:12px; color:var(--text);
  border:1px solid transparent; font-size:13px;
}
.side-links a:hover{background:rgba(255,255,255,.06); border-color:var(--border); text-decoration:none}
.side-links a.active{background:rgba(89,227,195,.10); border-color:rgba(89,227,195,.22)}
.content{
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
.content h1{margin-top:0; font-size:26px}
.content h2{margin-top:22px; font-size:18px}
.content p, .content li{color:var(--muted); line-height:1.65}
.content code{font-family:var(--mono); font-size:12px; padding:2px 6px; border-radius:10px; border:1px solid var(--border); background:rgba(255,255,255,.06); color:var(--text)}
.note{
  border-left:3px solid rgba(122,167,255,.85);
  background:rgba(122,167,255,.08);
  padding:12px 12px; border-radius:14px; margin:14px 0;
}
.warn{
  border-left:3px solid rgba(255,180,90,.95);
  background:rgba(255,180,90,.10);
  padding:12px 12px; border-radius:14px; margin:14px 0;
}
.footer{padding:28px 0 40px; color:var(--muted); font-size:12px}
.footer a{color:var(--muted)}
.small{font-size:12px;color:var(--muted)}
hr{border:0;border-top:1px solid var(--border); margin:18px 0}