body{margin:0;font-family:Arial,sans-serif;line-height:1.6;background:#f7f7f7}
header{background:#111;color:#fff;padding:15px 0;position:sticky;top:0}
.container{width:92%;max-width:1200px;margin:auto}
nav a{color:#fff;text-decoration:none;margin:0 12px}
.hero{background:linear-gradient(135deg,#0b1f3a,#1a1a1a);color:#fff;padding:90px 20px;text-align:center}
.btn{display:inline-block;background:#d4a017;color:#fff;padding:12px 18px;border-radius:6px;text-decoration:none;margin:5px}
.section{padding:50px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.08)}
footer{background:#111;color:#fff;text-align:center;padding:20px}
.whatsapp{position:fixed;right:20px;bottom:20px;background:#25D366;color:#fff;padding:12px 16px;border-radius:30px;text-decoration:none}