/* 自定义提示窗口样式 */
        .custom-alert {
            position: fixed;
            top: 50px;
            left: 50%;
            transform: translateX(-50%) translateY(-20px);
            z-index: 12000;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
        }

        .custom-alert.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .custom-alert-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            min-width: 300px;
            max-width: 500px;
            width: auto;
        }

        .custom-alert-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .custom-alert-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: white;
        }

        .custom-alert-message {
            font-size: 14px;
            color: white;
            line-height: 1.4;
            flex: 1;
        }

        .custom-alert-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .custom-alert-countdown {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.8);
        }

        .custom-alert-close {
            background: none;
            border: none;
            color: white;
            font-size: 16px;
            cursor: pointer;
            padding: 4px;
            border-radius: 4px;
            transition: background-color 0.2s ease;
        }

        .custom-alert-close:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        /* 不同类型的颜色 */
        .custom-alert.success {
            background-color: #4CAF50;
        }

        .custom-alert.error {
            background-color: #f44336;
        }

        .custom-alert.info {
            background-color: #2196F3;
        }

        .custom-alert.warning {
            background-color: #ff9800;
        }

        /* 响应式设计 */
        @media (max-width: 480px) {
            .custom-alert {
                top: 30px;
                left: 16px;
                right: 16px;
                transform: translateY(-20px);
            }

            .custom-alert.show {
                transform: translateY(0);
            }

            .custom-alert-content {
                min-width: auto;
                max-width: none;
                width: 100%;
                padding: 12px 16px;
            }

            .custom-alert-message {
                font-size: 13px;
            }
        }