*{
    font-size: 16px;
    font-family: 微软雅黑;
    margin: 0;
    padding: 0;
    line-height: 25px;
}
a{
    text-decoration: none;
    color: #000;
}
li{
    list-style: none;
}
.h20{
    height: 20px;
}
.h30{
    height: 30px;
}
.h40{
    height: 40px;
}
.h50{
    height: 50px;
}
.h60{
    height: 60px;
}
.h80{
    height: 80px;
}
.h100{
    height: 100px;
}
.clear{
    clear: both;
}
.contents{
    width: 1200px;
    margin: 0px auto;
}
.banner {
    background: url(../images/zt4_banner.jpg) no-repeat center;
    height: 530px;
}
.zt4_title{
    margin: 0px auto;
    text-align: center;
    color: #fff;
}
.zt4_title .big_title{
    font-size: 24px;
    font-family: "Hiragino Sans GB W3";
    line-height: 45px;
}
.zt4_title .sm_title{
    font-size: 14px;
    font-family: "Hiragino Sans GB W3";line-height: 25px;
}
.zt4_part1{
    background-image: url("../images/zt4_part1.jpg");
}
.zt4_part1 .part1_child>div{
    display: inline-block;
    vertical-align: top;
    color: #fff;
    width: 350px;
    height: 183px;
    padding: 40px;
    background-image: url("../images/zt4_part1_sm.png");
}
.zt4_part1 .part1_child>div p{
    text-align: center;
    line-height: 25px;
    margin-bottom: 5px;
}
.zt4_part1 .part1_child>div span{
    text-align: left;
    line-height: 25px;
}
.zt4_part1 .part1_child>div:nth-child(1){
    margin-left: 125px;
    margin-right: 40px;
}
.zt4_part1 .part1_child>div:nth-child(2){
    margin-left: 40px;
    margin-right: 125px;
}



.zt4_part2 .zt4_title{
    color: #000;
}
.zt4_part2 .part2_son ,.pzrt2_son_bg{
    height: 375px;
}
.pzrt2_son_bg{

}
.pzrt2_son_bg>div{
    display: inline-block;
    vertical-align: top;
}
.pzrt2_son_bg .zt4_prol{
    width: 555px;
    text-align: center;
}
.pzrt2_son_bg .zt4_prol img{
    margin-top: 40px;
    width: 439px;
}
.pzrt2_son_bg .zt4_pror{
    width: 555px;
    color: #fff;
    background: rgba(102,102,153,0.8);
    height: 295px;
    padding: 40px;
}
.pzrt2_son_bg>div:nth-child(2){
    float: right;
}
.zt4_pror>div:nth-child(1) h2{
    font-size: 24px;
    line-height: 38px;
    color: #fff!important;
}
.zt4_pror>div:nth-child(1) span{
    font-size: 14px;
}
.zt4_pror>div:nth-child(2) h3{
    font-size: 20px;
    color: #fff!important;
}
.zt4_pror>div:nth-child(2) p{
    font-size: 14px;
}
.zt4_pror>div:nth-child(2) a{
    display: block;
    position: relative;
    width: 145px;
    height: 40px;
    border: 1px solid #fff;
    text-align: center;
    left: 395px;
    top: -50px;
    line-height: 40px;
    color: #fff;
}
.pzrt2_son_bg1{
    background-image: url("../images/zt4_pro1_bg.jpg");
}
.pzrt2_son_bg2{
    background-image: url("../images/zt4_pro2_bg.jpg");
}
.pzrt2_son_bg3{
    background-image: url("../images/zt4_pro3_bg.jpg");
}


.zt4_part3{
    background-image: url("../images/zt4_part4_bg.jpg");
}
.zt4_cases>div{
    display: inline-block;
    vertical-align: top;
}
.zt4_cases>div img{
    width: 284px;
    height: 204px;
}
.zt4_cases>div:nth-child(2),.zt4_cases>div:nth-child(3){
    margin: 0px 12px;
}
.zt4_cases>div p{
    color: #fff;
    text-align: center;
    margin-top: 10px;
}



.zt4_part4 .zt4_title,.zt4_part5 .zt4_title{
    color: #5d658f;
}
.zt4_part4 .zt_part4_des{
    padding: 40px;
    padding-top: 65px;
    width: 745px;
    margin: 0 auto;
    color: #fff;
    line-height: 30px;
    height: 160px;
    background-image: url("../images/zt4_des.png");
    z-index: 999;
    position: sticky;
}
.zt4_part4 .part4_img{
    background: url("../images/zt4_des_img.jpg")no-repeat center ;
    height: 590px;
    margin-top: -150px;
}
.part4_img_des{
    height: 70px;
    background-color: #eeeeee;
}
.part4_child{
    height: 70px;
    line-height: 70px;
}
.part4_child >div ,.part4_child >div p{
    display: inline-block;
    vertical-align: top;
}
.part4_child >div{
    margin: 0px 30px;
}

.zt4_part5 .part5_bg {
    text-align: center;
}
.zt4_part5 .part5_bg img{
    width: 924px;
}
.zt4_part6{
    background-image: url("../images/zt4_part4_bg.jpg");
}
.zt4_part6 .part6_des >div{
    display: inline-block;
    vertical-align: top;
    margin: 80px 46px;
    text-align: center;
}
.zt4_part6 .part6_des >div p{
    color: #fff;
    margin-top: 10px;
}
.zt4_part6 .part6_des >div p img{
    width: 106px;
    height: 106px;
}




.footer_con ul li{
    padding: 0px 64px;
}
.footer_con ul li a{
    display: contents;
}
.copyright .t{
    height: 60px;
    line-height: 60px;
}
.copyright ul,.copyright ul li{
    height: 60px;
    line-height: 60px;
}
body, button, input, select, textarea{
    color: #000;
}