*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu}
.container{max-width:1100px;margin:0 auto;padding:16px}
.site-header{background:#0ea5a2;color:#fff}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.site-header a{color:#fff;text-decoration:none;margin-left:12px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.card,.ad-card{border:1px solid #e5e7eb;border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.05)}
.card img,.ad-card img{width:100%;height:160px;object-fit:cover;background:#f1f5f9}
.card .title,.ad-title{font-weight:600;padding:10px 12px}
.card .price{padding:0 12px 12px 12px;color:#0f766e}
.ads h2,.products h2{margin:20px 0 10px}
.site-footer{border-top:1px solid #e5e7eb;margin-top:30px}
.site-footer .container{padding:20px;color:#334155;font-size:.9rem}