*{box-sizing:border-box}
body{margin:0;font:18px/1.7 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#1c1f26;background:#f6f7f9}
a{color:#4f46e5}
header,footer{background:#111827;color:#fff;text-align:center;padding:14px 10px}
header a{color:#fff;text-decoration:none;font-weight:700;font-size:22px;letter-spacing:.5px}
header a span{color:#818cf8}
nav{margin-top:6px;font-size:15px}
nav a,footer a{color:#cbd5e1;font-weight:400;font-size:15px;margin:0 8px;text-decoration:none}
nav a:hover,footer a:hover{color:#fff}
main{max-width:800px;margin:0 auto;padding:16px;background:#fff}
h1{font-size:30px;line-height:1.25;margin:.4em 0 .5em}
h2{font-size:23px;margin:1.4em 0 .4em}
.ad{text-align:center;margin:14px auto;overflow:hidden}
.ad-728{width:728px;max-width:100%;min-height:90px}
.ad-320{width:320px;max-width:100%;min-height:50px}
.meta{color:#6b7280;font-size:14px;margin:0 0 10px}
.btn{display:inline-block;background:#4f46e5;color:#fff;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:600}
li{margin:.3em 0}
footer{font-size:14px;margin-top:20px}
@media(max-width:760px){body{font-size:17px}h1{font-size:25px}.ad-728{display:none}}