body{font-family:Tahoma,sans-serif;background:#f3fff9;color:#123;margin:0}header{background:linear-gradient(90deg,#00695c,#26a69a);color:#fff;padding:20px}nav{background:#004d40;padding:10px;display:flex;gap:12px}nav a{color:#e0f2f1;text-decoration:none;font-weight:700}main{max-width:1100px;margin:18px auto;padding:0 12px}.products{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.product{background:#fff;border:1px solid #b2dfdb;border-radius:10px;padding:10px}.product img{width:100%;height:110px;object-fit:cover;border-radius:8px}.price{font-weight:bold;color:#00796b}.card{background:#fff;border:1px solid #b2dfdb;border-radius:10px;padding:16px;margin-bottom:14px}label{display:block;margin:8px 0}input,button,textarea{font:inherit;padding:8px;border-radius:8px;border:1px solid #80cbc4;width:100%}button{background:#00897b;color:white;border:none;cursor:pointer;width:auto}.ok{color:#1b5e20;font-weight:700}.err{color:#b71c1c;font-weight:700}footer{background:#004d40;color:#fff;text-align:center;padding:12px;margin-top:20px}pre{background:#e8f5e9;padding:10px;overflow:auto}