:root{--bg:#0b1220;--fg:#e8eef8;--muted:#93a3b8;--link:#4ea7ff;--card:#121a2b;--accent:#0ea5e9;--maxw:1100px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Inter,Arial,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:20px}
header.site{position:sticky;top:0;z-index:50;background:#0c1424cc;backdrop-filter:blur(6px);border-bottom:1px solid #142038}
.nav{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.nav a{padding:8px 10px;border-radius:8px}
.nav a:hover{background:#0f1a30}
.brand{font-weight:700;color:#fff}
main{padding:28px 0}
.card{background:var(--card);border:1px solid #1a2742;border-radius:14px;padding:18px;box-shadow:0 8px 30px rgba(0,0,0,.25)}
h1{font-size:2rem;margin:0 0 10px}
h2{font-size:1.4rem;margin-top:24px}
.meta{color:var(--muted);font-size:.95rem}
footer.site{border-top:1px solid #142038;color:var(--muted);padding:24px 0;text-align:center}
@media (max-width:760px){h1{font-size:1.6rem}}