@media screen and (min-width:751px) {
    * {
        margin: 0;
        padding: 0;
        border: 0;
    }
    div{
        margin: 0;
        padding: 0;
        border: 0;
       
    }
    .w {
        width: 1200px;
        margin: 0 auto;
    }
    ul li{
        list-style: none;
    }
    .ck-slide {
        width: 100%;
        min-width: 1200px;
        height: 474px;
        position: relative;
    
    }
    .imageclass {
        width: 100%;
        height: 474px;
        position: relative;
        object-fit: cover;
    }
    .phoneimageclass{
        /* display: none; */
    }
    header {
        width: 100%;
        height: 474px;
        min-width: 1200px;
        /* background-image: url("../aiimage/AccessControl/bannerbg.png"); */
        background-size: 100% 100%;
        position: relative;
    }
    .top {
        position: absolute;
        top: 119px;
        /* left: 360px; */
        width: 533px;
        text-align: left;
    }
    .title_one{
        font-family: Alibaba PuHuiTi;
        font-weight: 500;
        font-size: 36px;
        color: #FFFFFF;
    }
    .xian_one{
        width: 100px;
        height: 4px;
        background: #F5F2F6;
        margin: 34px 0;
    }
    .content{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #FFFFFF;
        line-height: 30px;
    }
    .section_one{
        width: 100%;
        min-width: 1200px;
    }
    .section_one_content{
        display: flex;
        justify-content: space-between;
        padding: 70px 0;
        box-sizing: border-box;
    }
    .section_one_content_left{
        width: 580px;
        height: 268px;
        background: #FFFFFF;
        box-shadow: 0px 0px 17px 1px rgba(0,0,0,0.09);
        border-radius: 10px;
    }
    .section_one_content_left_top{
        width: 580px;
        height: 70px;
        background: linear-gradient(86deg,  #29C7FB,#3D93FD);
        border-radius: 10px 10px 0px 0px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 24px;
        box-sizing: border-box;
    }
    .sectiontitle{
        font-family: Alibaba PuHuiTi;
        font-weight: 500;
        font-size: 24px;
        color: #FFFFFF;
    }
    .sectioncontent{
        display: flex;
        margin-bottom: 20px;
    }
    .sectioncontent_bottom{
        height: 198px;
        padding: 24px 19px 27px 24px;
        box-sizing: border-box;
     
    }
    .bottom_one li{
        align-items: center;
    }
    .content_two{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #666666;
        margin-left: 7px;
        line-height: 18px;
    }
    .bluephone{
        width: 52px;
        height: 52px;
    }
    .rightimg{
        width: 22px;
        height: 22px;
    }
    .section_two{
        width: 100%;
        min-width: 1200px;
        height: 1729px;
        background-image: url("../aiimage/videophone/videbg.png");
        background-size: 100% 100%;
    }
    .neititle{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
        padding: 70px 0 23px 0;
        box-sizing: border-box;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .section_twocontent{

    }
    .start_left_img{
        width: 14px;height: 14px;margin-right: 8px;
    }
    .start_right_img{
        width: 14px;height: 14px;margin-left: 8px;
    }
    .slide{
        display: flex;
        justify-content: space-between;
    }
    .funcbigbox{
        width: 100%;
        background-color: #2b2e32;
        background-image: url("../aiimage/AccessControl/bg.png");
        background-size: 100% 100%;
        height: 754px;
        min-width: 1200px;
    }
    .funcbox{
        padding-top: 70px ;
        box-sizing: border-box;
       
    }
    .funcboxtitle{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #FFFFFF;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .funcontent{
        display: flex;
        margin-top: 35px;
        flex-wrap: wrap;
    }
    .funcontent_list{
        width: 380px;
        height: 254px;
        background: #445159;
        border-radius: 10px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 25px 0 35px 0;
        box-sizing: border-box;
        margin-right: 30px;
        margin-bottom: 30px;
    }
   
    .funcontent_list:nth-child(3n){
        margin-right: 0;
    }
    .funconttitle{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 22px;
        color: #FFFFFF;
        margin: 31px 0 16px 0;
        height: 20px;
        line-height: 10px
    }
    .funconttitle_two{
        font-size: 16px;
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        color: #FFFFFF;
    }
    .neibottom{
        width: 100%;
        min-width: 1200px;
        height: 353px;
        background: #F6F8FB;
        padding: 70px 0;
        box-sizing: border-box;
      
    }
    .bottombox{
        display: flex;
        margin-top: 40px;
        justify-content: space-between;
    }
    .bottom_list{
        width: 380px;
        height: 147px;
        background: #FFFFFF;
        box-shadow: 0px 4px 9px 0px rgba(0,0,0,0.05);
        border-radius: 10px;
    }
    
    .bottom_top{
        width: 100%;
        height: 50px;
        line-height: 25px;
        background: linear-gradient(86deg,  #29C7FB,#3D93FD);
        border-radius: 10px 10px 0px 0px;
        display: flex;
        padding: 4px 20px;
        box-sizing: border-box;
        justify-content: space-between;
        align-items: center;
    }
    .bottom_toptitle{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 24px;
        color: #FFFFFF;
    }
    .sysline{
        width: 25px;
        height: 3px;
        background: #FFFFFF;
        margin-top: 5px;
    }
    .Systembox_bottom{
        width: 100%;
        padding: 23px 16px 0 24px;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
    }
    .Systembox_bottom_content{
        display: flex;
        height: 15px;
        margin-bottom: 20px;
    }
    .Systembox_list_img{
        width: 17px;
        height: 13px;
        margin-right: 8px;
    }
    .Systembox_list_text{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #333333;
        margin-top: -6px;
    }
    .cardtitle{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
        height: 26px;
    }
    .leard_img{
        width: 34px;
        height: 34px;
    }
    .ding_img{
        width: 35px;
        height: 34px;
    }
    .sos_img{
        width: 35px;
        height: 31px;
    }
    .dingtwo_img{
        width: 27px;
        height: 33px;
    }
}