:root{
  --bg:#0a0b0d; --ink:#e5e7eb; --muted:#9aa2ad;
  --panel:#0e1014; --grid:#141821; --brand:#6ee7ff; --accent:#a78bfa;
  --radius:16px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:900px;margin:0 auto;padding:24px 20px}
.bar{position:sticky;top:0;background:rgba(10,11,13,.6);backdrop-filter:blur(6px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav a{color:var(--muted);margin-right:12px;padding:8px 10px;border-radius:10px}
.nav a:hover{color:var(--ink);background:rgba(255,255,255,.06)}
h1{margin:18px 0 10px;font-size:26px}
h2{margin:22px 0 8px;font-size:18px}
.muted{color:var(--muted)}
.slab{border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:18px;background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0))}
.row{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 12px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:var(--grid)}
.btn:hover{text-decoration:none;filter:brightness(1.06)}
.btn.ghost{background:transparent}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:13px;white-space:pre-wrap}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}