:root {
            --primary-blue: #2196F3;
            --bot-size: 60px;
            --chat-width: 400px;
            --chat-height: 600px;
        }

        /* 触发按钮 */
        #chatBotTrigger {
            position: fixed;
            bottom: 0px;
            right: 20px;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            /*background: #ff6f06;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);*/
            z-index: 1000;
            transition: transform 0.3s;
        }

        #chatBotTrigger:hover {
            transform: scale(1.1);
            transform-origin: bottom;
        }
		.aiop1 {
			display: block;
		}
		.aiop0 {
			display: none;
		}

        /* 机器人图标 */
        .bot-icon {
            width: 90%;
            /*height: 80%;*/
            margin: 10%;
            /*filter: brightness(0) invert(1);*/
        }

        /* 聊天容器 */
        #chatContainer {
            position: fixed;
            bottom: calc(var(--bot-size) + 25px);
            right: 20px;
            width: var(--chat-width);
            height: var(--chat-height);
            background: white;
            border-radius: 15px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.2);
            display: none;
            flex-direction: column;
            z-index: 1000;
        }

        /* 手机端样式 */
        @media (max-width: 768px) {
            #chatContainer {
                width: 100%;
                height: 100vh;
                bottom: 0;
                right: 0;
                border-radius: 0;
            }
            
            #chatBotTrigger {
                bottom: 70px;
            }
        }

        /* 遮罩层 */
        #chatOverlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            display: none;
            z-index: 999;
        }

        /* 头部 */
        .chat-header {
            padding: 15px;
            color: white;
            border-radius: 15px 15px 0 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .chat-header h3{
            font-weight: 400;
        }

        .close-btn {
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }

        /* 消息区域 */
        #chatMessages {
            flex: 1;
            padding: 15px;
            overflow-y: auto;
        }

        .message {
            margin: 10px 0;
            padding: 10px 15px;
            border-radius: 20px;
            max-width: 80%;
            animation: fadeIn 0.3s ease-in;
        }

        .user-message {
            background: #e3f2fd;
            margin-left: auto;
        }

        .bot-message {
            background: #f5f5f5;
        }

        /* 加载动画 */
        .loading-dots {
            display: inline-block;
            font-size: 18px;
        }
        .loading-dots::after {
            content: '...';
            animation: dots 1.5s infinite;
        }

        @keyframes dots {
            0%, 20% { content: '.'; }
            40% { content: '..'; }
            60% { content: '...'; }
            80%, 100% { content: ''; }
        }

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

        /* 输入区域 */
        #chatInput {
            display: flex;
            padding: 15px;
            border-top: 1px solid #ddd;
        }

        #userInput {
            flex: 1;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 25px;
            margin-right: 10px;
        }

        #sendBtn {
            padding: 12px 24px;
            color: white;
            border: none;
            border-radius: 25px;
            cursor: pointer;
        }