*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;color:#111;background:#fff}
.hero{min-height:90vh;display:grid;grid-template-columns:1fr 1fr;background:#f4f1ec}
.hero-image img{width:100%;height:90vh;object-fit:cover}
.hero-content{display:flex;flex-direction:column;justify-content:center;padding:80px}
.brand{letter-spacing:8px;font-weight:bold;font-size:28px}
h1{font-size:64px;line-height:1.05}
.button,.cart{background:#111;color:#fff;padding:16px 40px;text-decoration:none;border:0;display:inline-block}
.product{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:100px 8%}
.gallery img{width:100%;max-height:700px;object-fit:cover}
.details h2{font-size:40px}
.price{font-size:28px}
.colors button{padding:15px;margin:5px;border:1px solid #111;background:white}
.sizes span{display:inline-block;padding:12px 18px;border:1px solid #ccc;margin:5px}
.features{display:grid;grid-template-columns:repeat(3,1fr);padding:80px;background:#111;color:white;text-align:center}
@media(max-width:800px){.hero,.product,.features{grid-template-columns:1fr}.hero-image img{height:auto}h1{font-size:40px}}

html {
  scroll-behavior: smooth;
}