body{
margin:0;
font-family:Arial;
background:#0f172a;
color:#fff;
}
.topo{background:#020617;padding:15px;}
.container{display:flex;justify-content:space-between;}
.topo a{color:#fff;margin-left:15px;text-decoration:none;}
.hero{text-align:center;padding:80px;background:linear-gradient(45deg,#0ea5e9,#1e293b);}
.btn{padding:12px 20px;background:#22c55e;color:#000;margin:10px;display:inline-block;border-radius:5px;}
.whatsapp{background:#25d366;}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;padding:20px;}