html,body{
    color:#333;
    height: 100%;
    position:relative;
    background-color:#FFF;
    overflow-x: hidden;
}
html{
    font-size: 62.5%;
}
body{
    min-width:320px;
    font-size: 1.6rem;
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100vh;
}
.control_box1{
    width: 100%;
    height: 47.95vw;
    min-height: 500px;
    background: url('../images/control_1.jpg') no-repeat;
    background-size: cover;
    color:#F2F2F2;
    text-align: center;
    display: flex;
    align-items: center;
}
.control_box1_main{
    width:1180px;
    margin:0 auto;
}
.control_box1_title1{
    font-weight: bold;
    font-size: 48px;
}
.control_box1_title2{
    font-size: 24px;
    padding-top: 19px;
}
.control_box1_cont{
    width: 900px;
    margin:0 auto;
    padding-top: 50px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.control_box1_cont li{
    width:25%;
    list-style: none;
    font-size: 18px;
    color: #FFFFFF;
    cursor: pointer;
    display: flex;
    justify-content: center;
}
.control_box1_cont div{
    width: 190px;
    height: 190px;
}
.control_box1_cont_li1{
    padding-top: 32px;
}
.control_box1_cont_text2{
    padding-top: 9px;
}
.change_mode{
    width: 190px;
    height: 190px;
    display: none;
    background: url('../images/mcontrol_5.png') no-repeat;
    background-size: cover;
    position: relative;
    font-size: 18px;
}
.change_mode_1_title{
    width: 100%;
    margin: 0 auto;
    position: absolute;
    top: 38%;
}
.change_mode_1_text{
    width: 100%;
    margin: 0 auto;
    position: absolute;
    top: 50%;
}
.control_box2{
    width: 100%;
    height: 52.21vw;
    min-height: 700px;
    background: url('../images/control_2.jpg') no-repeat;
    background-size: cover;
    text-align: center;
    display: flex;
    align-items: center;
}
.control_box2_main{
    max-width:1180px;
    margin:0 auto;
}
.control_box2_title1{
    width: 60%;
    font-weight: bold;
    font-size: 48px;
    color: #FFFFFF;
}
.control_box2_title2{
    width: 60%;
    font-size: 24px;
    padding-top: 28px;
    color:#fff;
}
.control_box2_cont{
    width: 60%;
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.control_box2_cont li{
    width: 260px;
    height: 170px;
    background: rgba(255,255,255,0.18);
    border-radius: 20px;
    cursor: pointer;
    margin-top:50px;
}
.control_box2_cont li img{
    width: 170px;
}
.control_box2_cont_change_li{
    width: 260px;
    height: 170px;
    background: #FFFFFF;
    border-radius: 20px;
    display: none;
    position: relative;
}

.control_box2_cli_aft{
    width: 96%;
    color: #414141;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
.control_box2_cont_change_title{
    font-weight: bold;
    font-size: 24px;
}
.control_box2_cont_change_text{
    font-size: 14px;
    padding-top: 15px;
}

.control_box3{
    width: 100%;
    padding:100px 0;
    background: #F2F2F2;
}
.control_box3_main{
    width:1150px;
    margin:0 auto;
    text-align:center;
    color: #262626;
}
.control_box3_title1{
    font-weight: bold;
    font-size: 48px;
}
.control_box3_title2{
    font-size: 24px;
    padding-top: 29px;
}
.control_box3_cont{
    width: 100%;
    height: 48.93vw;
    margin-top: 80px;
    background: url("../images/control_7.png") no-repeat;
    background-size: cover;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    color:#fff;
}
.control_box3_cont_left{
    width: 16%;
    font-weight: bold;
    font-size: 48px;
}
.control_box3_cont_right{
    width: 43%;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}
.control_box3_cont_right li{
    width:40%;
    padding:20px 0;
}
.control_box3_cont_right li img{
    width: 100%;
}
.control_box3_cont_right_text1{
    font-weight: bold;
    font-size: 18px;
    padding-top: 18px;
}
.control_box3_cont_right_text2{
    font-size: 16px;
    color: #FFFFFF;
    padding-top: 10px;
}

.control_box4{
    width: 100%;
    height: 51.9vw;
    background: url("../images/control_12.jpg") no-repeat;
    background-size: cover;
    display: flex;
    align-items: center;
}
.control_box4_main{
    width:1150px;
    margin:0 auto;
    color: #FFFFFF;
}
.control_box4_title{
    width: 50%;
    text-align: center;
    font-weight: bold;
    font-size: 48px;
}
.control_box4_text{
    width: 50%;
    padding-top: 29px;
    font-size: 20px;
    line-height: 30px;
}


/*1200px以下导航栏和页脚的样式切换*/
@media (max-width: 1200px) {
    .control_box1_main{
        width:96%;
        max-width: 80rem;
    }
    .control_box1_title1{
        font-size: 4rem;
    }
    .control_box1_title2{
        font-size: 2rem;
        padding-top: 2rem;
    }
    .control_box1_cont{
        width: 90%;
        margin:0 auto;
        padding-top: 3rem;
    }
    .control_box1_cont li{
        font-size: 1.6rem;
    }
    .control_box1_cont div{
        width: 18rem;
        height: 18rem;
    }
    .change_mode{
        width: 18rem;
        height: 18rem;
        font-size: 1.6rem;
    }
    .control_box2{
        min-height: 50rem;
    }
    .control_box2_main{
        width:96%;
        margin:0 auto;
    }
    .control_box2_title1{
        width: 100%;
        font-size: 4rem;
        text-align:left;
    }
    .control_box2_title2{
        width: 100%;
        font-size: 2rem;
        padding-top: 2rem;
        text-align:left;
    }
    .control_box2_cont{
        width: 100%;
        max-width: 50rem;
        padding-top: 2rem;
    }
    .control_box2_cont li{
        width: 20rem;
        height: 14rem;
        border-radius: 1.6rem;
        margin-top:3rem;
    }
    .control_box2_cont li img{
        width: 14rem;
    }

    .control_box2_cont_change_li{
        width: 20rem;
        height: 14rem;
        border-radius: 1.6rem;
    }
    .control_box2_cont_change_title{
        font-size: 2rem;
    }
    .control_box2_cont_change_text{
        padding-top: 1rem;
    }
    .control_box3_main{
        width:96%;
    }
    .control_box3_title1{
        font-size: 4.6rem;
    }
    .control_box3_title2{
        font-size: 2rem;
        padding-top: 2rem;
    }
    .control_box3_cont{
        min-height:48rem;
        margin-top:6rem;
    }
    .control_box3_cont_left{
        width: 18%;
        font-size: 4rem;
    }
    .control_box3_cont_right li{
        width:40%;
        padding:1.5rem 0;
    }
    .control_box3_cont_right_text1{
        font-size: 1.6rem;
        padding-top: 1.4rem;
    }
    .control_box3_cont_right_text2{
        font-size: 1.4rem;
    }
    .control_box4_main{
        width:92%;
    }
    .control_box4_title{
        font-size: 4.6rem;
    }
    .control_box4_text{
        padding-top: 2.5rem;
        font-size: 1.8rem;
        line-height: 2.6rem;
    }
}
@media (min-width: 769px) and (max-width: 1200px) {

}
/* 媒体查询 - 平板设备 */
/*使用rem作单位*/
@media (max-width: 768px) {
    .control_box1{
        width: 100%;
        height: 160.13vw;
        min-height: 101rem;
        background: url('../images/mcontrol_1.jpg') no-repeat;
        background-size: cover;
    }
    .control_box1_main{
        width:96%;
    }
    .control_box1_title2{
        padding-top: 1.6rem;
    }
    .control_box1_cont{
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        padding-top: 2rem;
    }
    .control_box1_cont li{
        width:45%;
        font-size: 1.4rem;
        -webkit-tap-highlight-color:rgba(0,0,0,0);
    }
    .control_box1_cont .control_bc_li_long{
        width:100%;
    }
    .control_box1_cont div{
        width: 18rem;
        height: 18rem;
    }
    .change_mode{
        width: 18rem;
        height: 18rem;
        font-size: 1.4rem;
    }
    .control_box1_cont_li1{
        padding-top: 0;
    }
    .modeCont{
        padding-top:35%;
    }

    .control_box2{
        width: 100%;
        height: 132.53vw;
        min-height: 50rem;
        background: url('../images/mcontrol_2.jpg') no-repeat;
        background-size: cover;
        text-align: center;
    }
    .control_box2_title1{
        font-size: 4rem;
        text-align:center;
    }
    .control_box2_title2{
        font-size: 1.8rem;
        padding-top: 1.5rem;
        text-align:center;
    }
    .control_box2_cont{
        max-width: 48rem;
        padding-top: 2rem;
        margin:0 auto;
    }
    .control_box2_cont li{
        width: 18rem;
        height: 12rem;
        border-radius: 1.6rem;
        margin-top:3rem;
        -webkit-tap-highlight-color:rgba(0,0,0,0);
    }
    .control_box2_cont li img{
        width: 12rem;
    }

    .control_box2_cont_change_li{
        width: 18rem;
        height: 12rem;
        border-radius: 1.6rem;
    }
    .control_box2_cont_change_title{
        font-size: 1.8rem;
    }
    .control_box2_cont_change_text{
        padding-top: 0.8rem;
    }

    .control_box3{
        padding:8rem 0;
    }
    .control_box3_title1{
        font-size: 4rem;
    }
    .control_box3_title2{
        font-size: 1.6rem;
        padding-top: 1.8rem;
    }
    .control_box3_cont{
        width:100%;
        height:208vw;
        background: url('../images/mcontrol_3.png') no-repeat;
        background-size: 100%;
        margin-top:4rem;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }
    .control_box3_cont_left{
        width: 100%;
        margin-top:70%;
        font-size: 3rem;
    }
    .control_box3_cont_right{
        width: 100%;
    }
    .control_box3_cont_right li{
        width:40%;
        padding:1.5rem 0;
    }
    .control_box3_cont_right_text1{
        font-size: 1.4rem;
        padding-top: 1rem;
    }
    .control_box3_cont_right_text2{
        font-size: 1.2rem;
        padding-top: 0.8rem;
    }
    
    .control_box4{
        width: 100%;
        height: 104.27vw;
        background: url("../images/mcontrol_4.jpg") no-repeat;
        background-size: cover;
        display: flex;
        align-items: flex-start;
    }
    .control_box4_main{
        width:92%;
        padding-top:6rem;
    }
    .control_box4_title{
        width: 100%;
        font-size: 4rem;
    }
    .control_box4_text{
        width: 100%;
        text-align:center;
        padding-top: 2rem;
        font-size: 1.6rem;
        line-height: 2.2rem;
    }
}
/* 媒体查询 - 移动设备 */
/*使用rem作单位*/
@media (max-width: 480px) {
    .control_box1{
        min-height: 75rem;
    }
    .control_box1_title1{
        font-size: 3rem;
    }
    .control_box1_title2{
        font-size: 1.4rem;
        padding-top: 1.2rem;
    }
    .control_box1_cont{
        padding-top: 1rem;
    }
    .control_box1_cont li{
        font-size: 1.2rem;
    }
    .control_box1_cont div{
        width: 12.5rem;
        height: 12.5rem;
    }
    .change_mode{
        width: 12.5rem;
        height: 12.5rem;
        font-size: 1.2rem;
    }
    .control_box2{
        min-height:40rem;
    }
    .control_box2_title1{
        font-size: 3rem;
    }
    .control_box2_title2{
        font-size: 1.4rem;
        padding-top: 1rem;
    }
    .control_box2_cont{
        padding-top: 2rem;
        display: flex;
        justify-content: space-around;
    }
    .control_box2_cont li{
        width: 16rem;
        height: 11rem;
        border-radius: 1rem;
        margin-top:2rem;
    }
    .control_box2_cont li img{
        width: 11rem;
    }
    .control_box2_cont_change_li{
        width: 16rem;
        height: 11rem;
        border-radius: 1rem;
    }
    .control_box2_cont_change_title{
        font-size: 1.4rem;
    }
    .control_box2_cont_change_text{
        font-size: 1.2rem;
        padding-top: 0.5rem;
    }
    .control_box3{
        padding:6rem 0;
    }
    .control_box3_title1{
        font-size: 3rem;
    }
    .control_box3_title2{
        font-size: 1.4rem;
        padding-top: 1rem;
    }
    .control_box3_cont{
        margin-top:3rem;
    }
    .control_box3_cont_left{
        margin-top:66%;
        font-size: 2.4rem;
    }
    .control_box3_cont_right_text1{
        font-size: 1.2rem;
        padding-top: 0.8rem;
    }
    .control_box3_cont_right_text2{
        padding-top: 0.5rem;
    }
    .control_box4_main{
        padding-top:4rem;
    }
    .control_box4_title{
        font-size: 3rem;
    }
    .control_box4_text{
        padding-top: 1.5rem;
        font-size: 1.4rem;
        line-height: 2rem;
    }
}