body {
    background-color: #f2f2f2;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

.main-content {
    max-width: 640px;
    padding: 20px;
}

.box-item {
    text-align: center;
    margin: 10px auto;
}

.w-title {
    font-weight: 600;
    color: #0ecdb9;
    font-size: 16px;
}

#qrImage {
    width: 400px; /* 根据实际需求调整 */
    border: 1px solid #ddd;
    padding: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    object-fit: contain; /* 保持图片比例 */
}

.status {
    margin-top: 15px;
    color: #666;
    font-size: 14px;
}

.error {
    color: red;
}