/* 弹窗样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
        }
        
        .modal-content {
            background-color: #fefefe;
            margin: 15% auto;
            padding: 20px;
            border: 1px solid #888;
            width: 300px;
            border-radius: 5px;
            text-align: center;
        }
        
        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }
        
        .close:hover {
            color: black;
        }
        
        #qrcode-img {
            width: 200px;
            height: 200px;
            margin: 10px auto;
            display: block;
        }
        
        #status {
            margin: 10px 0;
            color: #666;
            min-height: 20px;
        }
        
        #login-btn {
            padding: 10px 20px;
            background-color: #07C160;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }
        
        #login-btn:hover {
            background-color: #06AD56;
        }