body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#0b0f17;color:#fff;}
header{padding:60px 20px;text-align:center;background:radial-gradient(circle,#111a2e,#0b0f17);}
h1{font-size:42px;margin:0;}
p{max-width:700px;margin:20px auto;color:#b6c2d1;line-height:1.6;}
.container{padding:40px 20px;max-width:1000px;margin:auto;}
.btn{display:inline-block;padding:12px 24px;background:#3b82f6;color:#fff;border-radius:8px;text-decoration:none;}
.section{margin:60px 0;}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;}
.card{background:#121a2a;padding:20px;border-radius:12px;}
footer{text-align:center;padding:30px;color:#667;}