*{box-sizing:border-box}body{margin:0;padding:30px 15px;background:#f5f6f8;font-family:Arial,Helvetica,sans-serif;color:#252525}.checkout-container{width:100%;max-width:480px;margin:0 auto;background:#fff;border-radius:14px;padding:28px;box-shadow:0 8px 30px rgba(0,0,0,.08)}.brand{text-align:center;margin-bottom:25px}.brand h1{margin:0 0 5px}.brand span{color:#777}.pedido,.total{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #eee}.cliente{padding:12px 0}.total{margin-bottom:25px;font-size:20px}.total strong{font-size:24px}label{display:block;margin-top:15px;margin-bottom:6px;font-size:14px;font-weight:bold}input,select{width:100%;padding:12px;border:1px solid #ccc;border-radius:7px;font-size:16px}.linha{display:flex;gap:12px}.linha>div{flex:1}button{width:100%;margin-top:25px;padding:15px;border:0;border-radius:8px;background:#0d6efd;color:white;font-weight:bold;font-size:17px;cursor:pointer}button:hover{opacity:.92}.seguranca{margin-top:20px;text-align:center;color:#777;font-size:12px}.message-box{margin:18px 0;padding:16px;border-radius:8px;background:#f0f3f6;line-height:1.5}.message-box.success{background:#eef9f1}.message-box.error{background:#fff0f0}@media(max-width:520px){body{padding:15px 10px}.checkout-container{padding:20px}}