body{margin:0;font-family:Arial,sans-serif;background:#0b1220;color:#eef2ff;line-height:1.7}nav{display:flex;justify-content:space-between;padding:18px 8%;background:#111827;position:sticky;top:0}a{color:#7dd3fc;text-decoration:none;margin-left:18px}.hero{padding:100px 8%;background:linear-gradient(135deg,#1d4ed8,#0f172a)}.btn{display:inline-block;background:#fff;color:#1d4ed8;padding:12px 22px;border-radius:8px;font-weight:bold;margin-top:20px}section{padding:70px 8%}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.card{background:#172033;padding:22px;border-radius:12px}footer{text-align:center;padding:30px;background:#111827}