body{margin:0;font-family:Arial;background:#000;color:#fff}
header{display:flex;justify-content:space-between;padding:15px}
nav a{color:#fff;margin-left:10px;text-decoration:none}
.hero{text-align:center;padding:60px 20px}
.btn,.whatsapp{display:block;background:#25D366;color:#000;padding:12px;text-align:center;margin:15px auto;width:90%;text-decoration:none}
.features{display:flex;justify-content:space-around;padding:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;padding:20px}
.card{background:#111;padding:15px}
.card img{width:100%}
.product{text-align:center;padding:20px}