.top {
    background-color: #010f20;
}

.banner {
    width: 100%;
    background-color: #010f20;
}

.banner-box {
    width: 1200px;
    margin: 0 auto;
    position: relative;
}

.banner-bg {
    margin-left: 230px;
    width: 970px;
    height: 488px;
}

.banner-title {
    position: absolute;
    top: 0;
}

.primary-title {
    padding: 136px 0 16px;
    font-size: 44px;
    line-height: 1.64;
    color: #ffffff;
}

.sub-title {
    padding-bottom: 48px;
    width:779px;
    font-size: 20px;
    line-height: 1.6;
    color: #ffffff;
}
/*以安全为核心的智能车载设备服务*/
.service{
    width:100%;
    padding-bottom:90px;
    background-color: #f7f7f7;
}
.service-title{
    padding-top:80px ;
    font-size: 24px;
    line-height: 1.5;
    text-align: center;
    color: #212121;
}
.service-body{
    position: relative;
    width:1200px;
    margin:0 auto;
}
.service-body li{
    position: relative;
    float: left;
    margin:116px 16px 0;
    width: 368px;
    height: 209px;
}
.service-img{
    width: 100%;
    height: 100%;
}
.service-primary{
    position: absolute;
    top:0;
    width:100%;
}
.primary-icon{
    position: absolute;
    top:-52px;
    left:50%;
    margin-left:-29px;
    width:58px;
    height:58px;
}
.primary-head{
    padding:50px 0 14px;
    font-size: 20px;
    line-height: 1.3;
    text-align: center;
    color: #31a874;
}
.primary-content{
    padding:0 34px;
    font-size: 14px;
    line-height: 1.71;
    text-align: center;
    color: #535353;
}
/*平台展示*/
.client {
    width: 100%;
    padding-bottom:90px;
    background: -webkit-linear-gradient(top,transparent 19px, rgba(56,179,134,.1) 20px),-webkit-linear-gradient(left,transparent 19px, rgba(56,179,134,.1) 20px);
    background: -moz-linear-gradient(top,transparent 19px, rgba(56,179,134,.1) 20px),-moz-linear-gradient(left,transparent 19px, rgba(56,179,134,.1) 20px);
    background: -o-linear-gradient(top,transparent 19px, rgba(56,179,134,.1) 20px),-o-linear-gradient(left,transparent 19px, rgba(56,179,134,.1) 20px);
    background: linear-gradient(top,transparent 19px, rgba(56,179,134,.1) 20px),linear-gradient(left,transparent 19px, rgba(56,179,134,.1) 20px);
    background-size: 20px 20px;
    background-color: #fff;
}
.client-title{
    padding:80px 0 64px;
    font-size: 24px;
    text-align: center;
    color: #212121;
}
.client-body{
    position: relative;
    width:1200px;
    margin:0 auto;
    height:640px;
}
.client-body .screen{
    position: absolute;
    top:0;
    left:50%;
    margin-left:-170px;
    width:339px;
    height:640px;
    z-index: 99;
}
.client-body .screen-1{
    margin:0 auto;
    width:339px;
    height:640px;
}
.client-left,
.client-right{
    z-index: 10;
    position: absolute;
    top:270px;
    left:0;
    width:48px;
    height:100px;
    cursor: pointer;
    opacity: .8;
    -ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=80);
    filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=80);
}
.client-right{
    right:0;
    left:auto;
}
.client-left:hover,
.client-right:hover{
    opacity: 1;
    -ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
    filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
}
.client-box{
    position: absolute;
    top:80px;
    /*left:48px;*/
    left:86.5px;
    /*width:1103px;*/
    width:1040px;
    height:520px;
    overflow: hidden;
}
.client-content{
    position: absolute;
    top:0;
    left:0;
    width:2394px;
}
.client-content li{
    float: left;
}
.client-content li img{
    margin:0  38.5px;
    width:265px;
    height:472px;
    box-shadow: 0 2px 26px 0 rgba(0,0,0,.1);
}