/* 登录按钮的样式 */
        #loginButton {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            margin: 0;
        }

        #loginButton:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
            background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
        }

        #loginButton:active {
            transform: translateY(0);
        }

        /* 已登录图标的样式 */
        #loggedInIcon {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 3px solid #667eea;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            display: none;
            user-select: none; /* 防止长按选择 */
            -webkit-tap-highlight-color: transparent; /* 移除移动端点击高亮 */
        }

        #loggedInIcon:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        /* 移动端特定样式 */
        @media (hover: none) and (pointer: coarse) {
            #loggedInIcon:active {
                transform: scale(0.95);
                transition: transform 0.1s ease;
            }
        }

        /* 小窗口的样式 */
        #popup {
            position: absolute;
            right: 0;
            top: 60px;
            width: 250px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(102, 126, 234, 0.2);
            border-radius: 12px;
            display: none;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            z-index: 1000;
            animation: slideIn 0.3s ease;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        #balance {
            font-size: 16px;
            font-weight: 600;
            color: #333;
            margin-bottom: 15px;
            padding: 10px;
            background: rgba(102, 126, 234, 0.1);
            border-radius: 8px;
            text-align: center;
        }

        #fund {
            margin-bottom: 15px;
        }

        #fund button {
            width: 100%;
            background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
        }

        #fund button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
            background: linear-gradient(135deg, #218838 0%, #1ea085 100%);
        }

        /* 退出按钮样式 */
        #logoutButton {
            width: 100%;
            background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
        }

        #logoutButton:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
            background: linear-gradient(135deg, #c82333 0%, #bd2130 100%);
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            #loginButton {
                padding: 8px 16px;
                font-size: 14px;
            }
            
            #loggedInIcon {
                width: 40px;
                height: 40px;
            }
            
            #popup {
                width: 220px;
                right: -10px;
                padding: 15px;
                /* 移动端弹窗改进 */
                touch-action: manipulation;
                user-select: none;
            }
            
            #balance {
                font-size: 14px;
                padding: 8px;
            }
            
            #fund button, #logoutButton {
                padding: 10px 16px;
                font-size: 14px;
                touch-action: manipulation;
            }
        }

        /* 移动端特定的弹窗样式 */
        @media (hover: none) and (pointer: coarse) {
            #popup {
                /* 在触摸设备上提供更大的点击区域 */
                min-height: 44px; /* iOS 推荐的最小触摸目标 */
            }
            
            #popup button {
                min-height: 44px;
                touch-action: manipulation;
            }
        }

        @media (max-width: 480px) {
            #popup {
                width: 200px;
                right: -20px;
            }
        }