:root { --bg:#0b0f17; --fg:#e7eef7; --muted:#9db4c0; --card:#141a24; }
*{box-sizing:border-box} body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu}
.wrap{max-width:860px;margin:0 auto;padding:32px}
header{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}
header h1{margin:0;font-size:40px}
nav{display:flex;gap:12px;flex-wrap:wrap}
nav a{padding:10px 14px;border-radius:12px;background:var(--card);color:var(--fg);text-decoration:none}
section{background:var(--card);padding:20px;border-radius:16px}
footer{opacity:.7;margin-top:24px}