.top{
    background-color: #373841;
}
.banner{
    width:100%;
    background-color: #373841;
}
.banner-box{
    width:1200px;
    margin:0 auto;
    position: relative;
}
.banner-bg{
    width:1183px;
    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{
    font-size: 20px;
    line-height: 1.6;
    color: #ffffff;
}
.main{
    position: relative;
    width: 100%;
    /*background: url('../../../images/front/device/bg-dot.png');*/
}
.main-top-img{
    position: absolute;
    top:0;
    left:0;
    width:100%;
    height:50%;
}
.main-bottom-img{
    position: absolute;
    bottom:0;
    left:0;
    width:100%;
    height:50%;
}
.main-title{
    width:100%;
    font-size: 24px;
    line-height: 1.5;
    text-align: center;
    color: #212121;
    padding:80px 0 65px;
}
.main-body{
    position: relative;
    width:1200px;
    margin:0 auto;
    padding-bottom: 90px;
}
.min-box{
    border-radius: 5px;
    background-color: #f7fafa;
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.06);
    border: solid 1px #e5e5e5;
}
.main-img{
    padding:60px 47px;
    border-radius: 5px;
    background-color: #ffffff;
}
.main-img img{
    width: 1104px;
    height: 450px;
}
.main-content{
    width:100%;
    background-color: #f7fafa;
    border-radius: 5px;
}
.main-content p{
    font-size: 16px;
    line-height: 1.5;
    color: #535353;
    padding:40px;
}
/*技术优势*/
.tech{
    width:100%;
    padding-bottom:90px;
    background-color: #f7f7f7;
}
.tech-title{
    padding-top:80px;
    font-size: 24px;
    line-height: 1.5;
    text-align: center;
    color: #212121;
}
.tech-body{
    width:1200px;
    margin:0 auto;
}
.tech-body li{
    position: relative;
    float: left;
    width:368px;
    margin:100px 16px 0;
    height: 245px;
    background-color: #fff;
}
.tech-icon{
    position: absolute;
    width: 62px;
    height: 72px;
    left: 153px;
    top: -36px;
}
.tech-head{
    padding:65px 0 24px;
    font-size: 20px;
    line-height: 1.5;
    text-align: center;
    color: #31a874;
}
.tech-content{
    padding:0 32px;
    font-size: 14px;
    line-height: 1.71;
    text-align: center;
    color: #535353;
}