/*zizhi*/
.an_zizhi{background:url(../Image/zizhibg.webp) no-repeat center bottom var(--backgroundColor);position:relative;overflow:hidden;padding:30px 0 600px;background-size:100% auto;}
.an_zizhi .anz_ul{padding-top:5px;}
.an_zizhi .anz_ul .anz_li{width:calc(100%/3 - 20px);margin-left:30px;margin-top:30px;}
.an_zizhi .anz_ul .anz_li:nth-child(3n+1){margin-left:0;}
.an_zizhi .anz_ul .anz_li .anz_img{width:100%;padding-bottom:70.71%;position:relative;}

@media screen and (max-width:1599px){
    .an_zizhi{padding:25px 0 450px;}
    .an_zizhi .anz_ul{padding-top:4px;}
    .an_zizhi .anz_ul .anz_li{width:calc(100%/3 - 16px);margin-left:24px;margin-top:25px;}
}

@media screen and (max-width:1359px){
    .an_zizhi{padding:20px 0 300px;}
    .an_zizhi .anz_ul{padding-top:3px;}
    .an_zizhi .anz_ul .anz_li{width:calc(100%/3 - 14px);margin-left:21px;margin-top:20px;}
}

@media screen and (max-width:1023px){
    .an_zizhi{padding:15px 0 210px;}
    .an_zizhi .anz_ul{padding-top:2px;}
    .an_zizhi .anz_ul .anz_li{width:calc(100%/3 - 10px);margin-left:15px;margin-top:15px;}
}

@media screen and (max-width:767px){
    .an_zizhi{padding:15px 0 30vw;}
    .an_zizhi .anz_ul{padding-top:0;}
    .an_zizhi .anz_ul .anz_li{width:calc(50% - 5px);margin-left:10px;margin-top:10px;}
    .an_zizhi .anz_ul .anz_li:nth-child(3n+1){margin-left:10px;}
    .an_zizhi .anz_ul .anz_li:nth-child(odd){margin-left:0;}
}