body{font-family:Arial;margin:0;color:#333}.container{max-width:1100px;margin:auto;padding:30px}
header{background:#0b1f33;color:white;text-align:center}.logo{width:100px}
nav a{color:white;margin:10px;text-decoration:none}.hero{background:#eee;text-align:center;padding:80px 20px}
.btn{background:#f2a900;color:white;padding:12px 25px;text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{border:1px solid #ddd;padding:20px}footer{background:#111;color:white;text-align:center;padding:20px}
.whatsapp{position:fixed;right:20px;bottom:20px;background:#198754;color:white;padding:12px}