/* 悬浮按钮样式 */
        .chat-button {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 60px;
            height: 60px;
            background-color: #007bff;
            color: #fff;
            border-radius: 50%;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            z-index: 1000;
            font-size: 16px;
            text-align: center;
        }

        .chat-button:hover {
            background-color: #0056b3;
        }

        /* 聊天窗口样式 */
        .chat-window {
            position: fixed;
            bottom: 90px;
            right: 20px;
            width: 277px;
            height: 500px;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            display: none; /* 默认隐藏 */
            flex-direction: column;
            z-index: 1000;
        }

        .chat-header {
            background-color: #007bff;
            color: #fff;
            padding: 10px;
            border-radius: 10px 10px 0 0;
            text-align: center;
            font-weight: bold;
        }

        .chat-body {
            flex: 1;
            overflow: hidden;
        }

        .chat-body iframe {
            width: 100%;
            height: 100%;
            border: none;
        }

        .chat-footer {
            text-align: center;
            background-color: #f1f1f1;
            padding: 5px;
            border-radius: 0 0 10px 10px;
        }

        .close-button {
            background-color: #ff4d4f;
            color: white;
            border: none;
            padding: 5px 10px;
            border-radius: 5px;
            cursor: pointer;
        }

        .close-button:hover {
            background-color: #d9363e;
        }