#chatbot {
        max-width: 1100px;
        margin: 20px auto;
        padding: 20px;
        border-radius: 20px;
        background-image: linear-gradient(0deg, #fbfbfb, #ffffff);
        border: 2px solid #ffffff;
        box-shadow: 0 0px 8px rgb(0 0 0 / 10%);
    }
    #messages {
        height: 400px;
        overflow-y: scroll;
        border: 1px solid #ddd;
        margin-bottom: 10px;
        padding: 10px;
        background-color: #f9f9f9;
        border-radius: 5px;
    }
    .user {
        background-color: #d1e7dd; /* 用户消息背景色 */
        text-align: right;
        float: right;
    }
    .bot {
        background-color: #fff; /* 机器人消息背景色 */
        float: left;
    }
    .avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        margin-right: 10px;
    }
    #input-area {
        display: flex;
    }
    #keywords {
        margin-bottom: 10px;
        display: flex;
        flex-wrap: wrap;
        text-align: center;
        justify-content: center; /* 居中显示 */
        background-color: #ffffff; /* 背景颜色为白色 */
        padding: 10px;
        border-radius: 5px;
    }
    .keyword {
        margin: 5px;
        padding: 5px 10px;
        border: 2px dashed #2655ff; /* 虚线边框 */
        background-color: #ffffff;
        border-radius: 5px;
        cursor: pointer;
        transition: background-color 0.3s;
        flex: 1 1 calc(25% - 10px); /* 电脑端一行显示四个 */
        color: #2655ff; /* 按钮文字颜色 */
    }
    .keyword:hover {
        background-color: #e1e1e1; /* 悬停时背景颜色 */
    }
    @media (max-width: 600px) {
        .keyword {
            flex: 1 1 calc(50% - 10px); /* 手机端一行显示两个 */
        }
    }
    input {
        flex: 1;
        padding: 10px;
        border: 1px solid #ccc;
        border-radius: 3px;
    }
    .chat-btn {
        padding: 0 15px;
        background-color: #2655ff;
        color: white;
        border: none;
        border-radius: 10px;
        cursor: pointer;
        height: 45px;
        margin-left: 5px;
        transition: background-color 0.3s;
    }
.response-list {
margin-top: 10px;
list-style-type: none;
padding: 0;
}

.response-list li {
margin: 5px 0;
}

    .alert {
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    text-align: center;
    border-radius: .25rem;
}
.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}
.mac {
        width:15px;
        height:15px;
        border-radius:100%;
        float:left;
        margin:10px 0 0 5px;
    }
    .b1 {
        background:#E0443E;
        margin-left: 10px;
    }
    .b2 { background:#DEA123; }
    .b3 { background:#1AAB29; }