body{margin:0;font-family:Arial,sans-serif}
.header{background:#021B49;color:#fff;position:sticky;top:0}
.container{width:90%;max-width:1200px;margin:auto}
.nav{display:flex;justify-content:space-between;padding:18px}
nav a{color:#fff;margin-left:20px;text-decoration:none}
.hero{height:90vh;background:linear-gradient(rgba(2,27,73,.85),rgba(2,27,73,.85)),url('https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1600&q=80');background-size:cover;display:flex;align-items:center;justify-content:center;color:#fff;text-align:center}
.hero h1{font-size:72px}.hero span{color:#00a3ff}
.btn{background:#00a3ff;color:#fff;padding:14px 24px;border-radius:6px;text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.card{padding:25px;border-radius:10px;box-shadow:0 3px 15px rgba(0,0,0,.1);text-align:center}
section{padding:60px 0}
.stats{background:#021B49;color:#fff;display:grid;grid-template-columns:repeat(4,1fr);text-align:center;padding:30px}
.contact{text-align:center;background:#f4f7fb;padding:60px 0}
footer{background:#021B49;color:#fff;text-align:center;padding:20px}