:root{--bg:#0f1115;--fg:#e6e6e6;--muted:#9aa3ad;--accent:#4f8cff;--card:#161a22}
*{box-sizing:border-box;margin:0;padding:0}
body{font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg)}
header{display:flex;justify-content:space-between;align-items:center;padding:20px 6vw;border-bottom:1px solid #222}
header a{color:var(--fg);text-decoration:none;font-weight:600}
nav a{margin-left:22px;color:var(--muted);font-weight:400}
nav a:hover{color:var(--fg)}
main{max-width:960px;margin:0 auto;padding:60px 6vw}
h1{font-size:2.4rem;line-height:1.2;margin-bottom:14px}
h2{font-size:1.4rem;margin:40px 0 12px}
p.lead{color:var(--muted);font-size:1.15rem;max-width:640px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:28px}
.card{background:var(--card);border:1px solid #232833;border-radius:12px;padding:20px}
.card h3{font-size:1.05rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}
footer{padding:30px 6vw;border-top:1px solid #222;color:var(--muted);font-size:.9rem}
code{background:#1d222c;padding:2px 6px;border-radius:6px;font-size:.9em}