*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:#f5f5f5;color:#222}
header{background:#111;color:#fff;position:sticky;top:0;z-index:1000}
.nav{display:flex;justify-content:space-between;align-items:center;max-width:1100px;margin:auto;padding:10px}
nav{display:flex;flex-wrap:wrap}
nav a{color:#fff;margin:5px 10px;text-decoration:none;font-size:15px}
.hero{padding:60px 20px;background:#222;color:#fff;text-align:center}
.container{max-width:1100px;margin:auto;padding:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card,.product{background:#fff;padding:20px;border-radius:8px}
.product{display:flex;gap:20px;flex-wrap:wrap}
.product img{max-width:220px;width:100%;border-radius:6px}
.btn{display:inline-block;background:#c62828;color:#fff;padding:10px 15px;border-radius:5px;text-decoration:none}
footer{text-align:center;padding:20px;background:#111;color:#fff}
@media(max-width:768px){
.nav{flex-direction:column;align-items:flex-start}
nav{width:100%}
nav a{padding:8px 0}
.hero{padding:40px 15px}
.product{flex-direction:column}
}