body{font-family:Arial;margin:0;background:#f5f6f8}
header{background:#27ae60;color:#fff;padding:15px;text-align:center;font-size:20px}
.container{padding:15px}
.card{background:#fff;margin:10px 0;padding:14px;border-radius:12px;box-shadow:0 2px 6px rgba(0,0,0,0.05)}
.price{color:#27ae60;font-weight:bold;font-size:18px}
.best{background:#27ae60;color:#fff;padding:4px 8px;border-radius:6px;font-size:12px;display:inline-block;margin-bottom:5px}
input,button{width:100%;padding:12px;margin:6px 0;border-radius:8px;border:1px solid #ddd}
button{background:#27ae60;color:white;border:none}
.nav{position:fixed;bottom:0;width:100%;display:flex;justify-content:space-around;background:#fff;padding:10px}
.ad{background:#eee;text-align:center;padding:12px;margin:10px 0}