body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#07131f;color:#eef6ff;line-height:1.75}
header{padding:56px 20px;background:linear-gradient(135deg,#0f172a,#0891b2)}
nav a{color:#fff;text-decoration:none;margin-right:16px;font-weight:bold}
main{max-width:1120px;margin:auto;padding:30px 20px}
section{background:#111827;border:1px solid #2a3d58;border-radius:20px;padding:28px;margin:24px 0}
h1{font-size:42px;margin:0} h2{color:#67e8f9}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.card{background:#0f172a;padding:18px;border-radius:16px}
footer{text-align:center;padding:28px;color:#cbd5e1}