*{  
    margin: 0;padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
    /* -webkit-user-select: none;
    -moz-user-focus: none;
    -moz-user-select: none; */
}   
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

 ::-webkit-scrollbar-track {
    background: #f6f6f6;
    border-radius: 2px;
}

 ::-webkit-scrollbar-thumb {
    background: #cdcdcd;
    border-radius: 20px;
}

 ::-webkit-scrollbar-thumb:hover {
    background: #333;
}

 ::-webkit-scrollbar-corner {
    background: #f6f6f6;
}
/* 
    在font文件夹中执行下列命令，进行字体压缩（需要先还原未压缩前的字体包）
    font-spider ../../index.html
*/
@font-face {
    font-family: 'MiSans-Medium';
    src: url('../font/MiSans-Medium.ttf');
}
.font_medium {
    font-family: 'MiSans-Medium';
}
@font-face {
    font-family: 'MiSans-Normal';
    src: url('../font/MiSans-Normal.ttf');
}
.font_normal {
    font-family: 'MiSans-Normal';
}
@font-face {
    font-family: 'MiSans-Regular';
    src: url('../font/MiSans-Regular.ttf');
}
.font_regular {
    font-family: 'MiSans-Regular';
}
.wid{
    max-width: 1920px;
    padding:0 60px;
    margin:0 auto;
    position: relative;
}
.bar_tit{
    display: flex;
    align-items: flex-end;
}
.bar_tit .zh{
    font-weight: 500;
    font-size: 72px;
    color: #000000;
    line-height: 84px;
    letter-spacing: 6px;
}
.bar_tit .en{
    font-weight: 400;
    font-size: 75px;
    color: rgba(0,0,0,0.1);
    line-height: 75px;
    margin-left: 20px;
    letter-spacing: 6px;
}
.header{
    background-color: #000;
    padding-bottom: 78px;
}
.banner{
    max-width: 1920px;
    margin:0 auto;
}
.banner .canvas{
    width: 100%;
    height: auto;
}
.banner2{
    display: none;
}
.banner2 .logo{
    font-weight: 600;
    font-size: 29px;
    color: #FFFFFF;
    line-height: 34px;
}
.banner2 .banner_tit{
    font-weight: 500;
    font-size: 42px;
    color: #FFFFFF;
    line-height: 116px;
    letter-spacing: 8px;
    text-align: center;
    margin-top: 200px;
}
.banner2 .banner_txt{
    font-weight: 500;
    font-size: 36px;
    color: #ccc;
    letter-spacing: 8px;
    text-align: center;
    margin-bottom:120px;
}
.about{
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}
.about .item{
    width: 32%;
    background-color: #fff;
    padding:60px 70px 50px 40px;
    position: relative;
}
.about .item .bot_bg{
    position: absolute;
    width: 160px;
    height: 160px;
    right:0;
    bottom:0;
}
.about .item .title{
    position: relative;
}
.about .item .title .zh{
    font-weight: 500;
    font-size: 28px;
    color: #000000;
    line-height: 33px;
}
.about .item .title .en{
    font-weight: 300;
    font-size: 44px;
    color:rgba(0,0,0,0.1);
    position: absolute;
    left:55px;
    top:-38px;
    white-space: nowrap;
}
.about .item .desc{
    font-weight: 400;
    font-size: 19px;
    color: #000000;
    line-height: 30px;
    margin-top: 20px;
}
.about .item .bot{
    margin-top: 50px;
    font-weight: 400;
    font-size: 38px;
    color: #000000;
    line-height: 45px;
    display: flex;
    align-items: flex-end;
}
.about .item .bot .num{
    font-weight: 300;
    font-size: 89px;
    color: #000000;
    line-height: 74px;
    margin-right: 12px;
}
.protocol{
    padding:150px 0 130px;
}
.protocol .wid{
    display: flex;
}
.protocol .left{
    width: 49.3%;
    margin-right:7%;
}
.protocol .left .img{
    width: 100%;
    display: block;
}
.protocol .right{
    flex: 1;
}
.protocol .right .tit{
    font-weight: 500;
    font-size: 72px;
    color: #000000;
    margin-top: 30px;
    line-height: 1;
}
.protocol .right .tit_en{
    margin-top: 70px;
    text-align: right;
    border-bottom:1px solid #000;
    font-weight: 400;
    font-size: 30px;
    color:rgba(0,0,0,0.3);
    padding-bottom: 5px;
}
.protocol .right .list{
    display: flex;
    flex-wrap: wrap;
    padding-top: 30px;
}
.protocol .right .list .li{
    width: 41%;
    margin-top: 50px;
    display: flex;
    align-items: center;
    font-weight: 400;
    font-size: 28px;
    color: #000000;
}
.protocol .right .list .li .icon{
    width: 32px;
    height: 32px;
    margin-right: 12px;
}
.software{
    background-color: #000;
}
.software .wid{
    display: flex;
    padding-top: 136px;
    padding-bottom: 320px;
}
.software .right{
    position: absolute;
    bottom:0;
    right:96px;
    max-width: 890px;
    width: 49%;
}
.software .right .img{
    width: 100%;
    display: block;
}
.software .left{
    width: 42%;
    position: relative;
}
.software .left .tit{
    font-weight: 500;
    font-size: 72px;
    color: #FFFFFF;
    line-height: 1;
    margin-bottom: 30px;
}
.software .left .border{
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.6);
}
.software .left .tit_en{
    position: absolute;
    right:0;
    top:18px;
    font-weight: 400;
    font-size: 30px;
    color: rgba(255,255,255,0.3);
    white-space: nowrap;
}
.software .left .list{
    display: flex;
    flex-wrap: wrap;
    margin-top:115px;
}
.software .left .list .li{
    display: flex;
    align-items: center;
    width: 42%;
    font-weight: 400;
    font-size: 28px;
    color: #FFFFFF;
    margin-bottom: 50px;
}
.software .left .list .icon{
    width: 32px;
    height: 32px;
    margin-right: 12px;
}
.solution{
    padding-top: 120px;
}
.solution .case{
    padding-left:300px;
    margin-bottom: 120px;
    position: relative;
}
.solution .case.first{
    margin-top: 160px;
}
.solution .case .con{
    padding-bottom: 120px;
    border-bottom: 1px solid #000;
}
.solution .case .title{
    margin-bottom: 60px;
}
.solution .case .title .name{
    font-weight: 500;
    font-size: 48px;
    color: #000000;
    line-height: 56px;
}
.solution .case .tag{
    padding:0 15px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #000;
    border-radius: 50px;
    font-size: 16px;
    color: #FFFFFF;
    font-weight: 600;
    position: absolute;
    top:10px;
    left:0;
}
.solution .case .desc{
    font-weight: 400;
    font-size: 29px;
    color: #000000;
    line-height: 48px;
}
.solution .case .img{
    margin-top: 46px;
    width: 100%;
    display: block;
}
.solution .more_case{
    margin-bottom: 0;
    border-bottom: 1px solid #000;
}
.solution .more_case .con{
    border-bottom: 0;
}
.solution .more_case .list{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.solution .more_case .list .list_img{
    width: 23%;
    display: block;
}
.pcb{
    padding-top:120px;
}
.pcb .list{
    display: grid;
    margin-top:80px;
    justify-content: space-between;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 30px;
    padding-bottom: 120px;
    border-bottom: 1px solid #000;
}
.pcb .list .li .img{
    width: 100%;
    display: block;
}
.pcb .list .li .tit{
    text-align: center;
    font-weight: 400;
    font-size: 28px;
    color: #000000;
    line-height: 33px;
    margin-top: 16px;
}
.system{
    padding-top:120px;
}
.system .list{
    display: grid;
    margin-top:80px;
    justify-content: space-between;
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 30px;
    padding-bottom: 120px;
    border-bottom: 1px solid #000;
}
.system .list .li .img{
    width: 100%;
    display: block;
}
.footer{
    padding:120px 0 150px;
}
.footer .mail{
    font-weight: 500;
    font-size: 48px;
    color: #000000;
    line-height: 56px;
    letter-spacing: 4px;
    margin-top: 120px;
    word-break: break-all;
}
.footer .address{
    font-weight: 500;
    font-size: 48px;
    color: #000000;
    line-height: 56px;
    letter-spacing: 4px;
    margin-top: 20px;
}
.footer .copyright{
    font-weight: 500;
    font-size: 28px;
    color: #999;
    line-height: 56px;
    letter-spacing: 4px;
    margin-top: 40px;
}
.footer .copyright a{
    color: #999;
    text-decoration: none;
    transition: all 0.4s;
}
.footer .copyright a:hover{
    color:#000;
}
/* 一阶段适配 */
@media screen and (max-width: 1620px) {
    .protocol .right .tit{
        font-size: 68px;
    }
    .protocol .right .list .li{
        font-size: 24px;
    }
    .software .wid{
        padding-bottom: 260px;
    }
    .software .left .tit{
        font-size: 68px;
    }
    .software .left .list .li{
        font-size: 24px;
    }
    .bar_tit .zh{
        font-size: 68px;
    }
    .bar_tit .en{
        font-size: 70px;
    }
} 
/* 二阶段适配 */
@media screen and (max-width: 1440px) {
    .about .item .title .en{
        font-size: 32px;
        top:-25px;
    }
    .about .item .title .zh{
        font-size: 25px;
    }
    .about .item .desc{
        font-size: 16px;
    }
    .about .item .bot{
        font-size: 32px;
    }
    .about .item .bot .num{
        font-size: 72px;
    }
    .about .item .bot_bg{
        width: 130px;
        height: 130px;
    }
    .protocol .right .tit{
        font-size: 56px;
    }
    .protocol .right .tit_en{
        margin-top: 58px;
        font-size: 26px;
    }
    .protocol .right .list .li{
        font-size: 20px;
        margin-top: 42px;
    }
    .protocol .right .list .li .icon{
        width: 24px;
        height: 24px;
    }
    .software .left .tit{
        font-size: 56px;
    }
    .software .left .tit_en{
        font-size: 26px;
    }
    .software .left .list .li{
        font-size: 20px;
        margin-bottom: 42px;
    }
    .software .left .list .icon{
        width: 24px;
        height: 24px;
    }
    .software .wid{
        padding-bottom: 230px;
    }
    .bar_tit .zh{
        font-size: 56px;
    }
    .bar_tit .en{
        font-size: 58px;
    }
    .solution{
        padding-top: 80px;
    }
    .solution .case{
        margin-bottom: 80px;
        padding-left: 220px;
    }
    .solution .case.first{
        margin-top: 80px;
    }
    .solution .case .tag{
        font-size: 14px;
        height: 38px;
    }
    .solution .case .title{
        margin-bottom: 40px;
    }
    .solution .case .title .name{
        font-size: 36px;
    }
    .solution .case .desc{
        font-size: 24px;
    }
    .solution .case .img{
        margin-top: 30px;
    }
    .solution .case .con{
        padding-bottom: 80px;
    }
    .pcb{
        padding-top: 0;
    }
    .pcb .list .li .tit{
        font-size: 24px;
    }
    .pcb .list{
        padding-bottom: 80px;
    }
    .system{
        padding-top: 80px;
    }
    .system .list{
        padding-bottom: 80px;
    }
    .footer{
        padding:80px 0 100px;
    }
    .footer .mail{
        margin-top: 80px;
        font-size: 36px;
    }
    .footer .address{
        font-size: 36px;
        margin-top: 10px;
    }
    .footer .copyright{
        font-size: 20px;
    }
}
/* 三阶段适配 */
@media screen and (max-width: 1220px) {
    .about .item{
        padding: 40px 30px 20px;
    }
    .about .item .bot_bg{
        width: 90px;
        height: 90px;
    }
    .about .item .title .zh{
        font-size: 20px;
    }
    .about .item .title .en{
        font-size: 24px;
        top: -16px;
    }
    .about .item .desc{
        font-size: 14px;
        line-height: 26px;
        margin-top: 10px;
    }
    .about .item .bot{
        font-size: 24px;
        margin-top: 30px;
    }
    .about .item .bot .num{
        font-size: 50px;
        line-height: 56px;
    }
    .protocol{
        padding: 80px 0 80px;
    }
    .protocol .right .tit{
        font-size: 42px;
        margin-top: 24px;
    }
    .protocol .right .tit_en{
        margin-top: 48px;
        font-size: 24px;
    }
    .protocol .right .list .li{
        font-size: 15px;
        margin-top: 30px;
    }
    .protocol .right .list .li .icon{
        width: 18px;
        height: 18px;
    }
    .software .left .tit{
        font-size: 42px;
        margin-bottom: 24px;
    }
    .software .left .tit_en{
        font-size: 24px;
        top: 8px;
    }
    .software .left .list{
        margin-top: 72px;
    }
    .software .left .list .li{
        font-size: 15px;
        margin-bottom: 30px;
    }
    .software .left .list .icon{
        width: 18px;
        height: 18px;
    }
    .software .right{
        width: 42%;
    }
    .software .wid{
        padding-top: 80px;
        padding-bottom: 170px;
    }
    .bar_tit .zh{
        font-size: 42px;
    }
    .bar_tit .en{
        font-size: 42px;
    }
    .solution{
        padding-top: 50px;
    }
    .solution .case{
        margin-bottom: 50px;
        padding-left: 180px;
    }
    .solution .case.first{
        margin-top: 50px;
    }
    .solution .case .tag{
        font-size: 12px;
        height: 34px;
    }
    .solution .case .title{
        margin-bottom: 20px;
    }
    .solution .case .title .name{
        font-size: 30px;
        line-height: 48px;
    }
    .solution .case .desc{
        font-size: 20px;
        line-height: 30px;
    }
    .solution .case .img{
        margin-top: 20px;
    }
    .solution .case .con{
        padding-bottom: 50px;
    }
    .pcb .list .li .tit{
        font-size: 20px;
    }
    .pcb .list{
        padding-bottom: 50px;
        margin-top: 50px;
    }
    .system{
        padding-top: 50px;
    }
    .system .list{
        padding-bottom: 50px;
        margin-top: 50px;
    }
    .footer{
        padding:50px 0 80px;
    }
    .footer .mail{
        margin-top: 50px;
        font-size: 28px;
        line-height: 48px;
    }
    .footer .address{
        font-size: 28px;
        margin-top:0;
        line-height: 48px;
    }
    .footer .copyright{
        font-size: 14px;
        margin-top:10px;
    }
}
/* 四阶段适配 */
@media screen and (max-width: 788px) {
    .wid{
        padding:0 15px;
    }
    .banner{
        display: none;
    }
    .banner2{
        display: block;
        padding-top: 40px;
    }
    .about{
        flex-wrap: wrap;
        margin-top: 0;
    }
    .about .item{
        width: 100%;
        margin-top: 20px;
    }
    .protocol .left{
        display: none;
    }
    .software .right{
        display: none;
    }
    .software .left{
        width: 100%;
    }
    .software .left .tit_en{
        top:152px;
    }
    .software .left .border{
        padding-bottom: 80px;
    }
    .software .wid{
        padding-bottom: 60px;
    }
    .bar_tit .en{
        display: none;
    }
    .solution .case{
        padding-left: 0;
    }
    .solution .case .tag{
        display: none;
    }
    .solution .more_case .list .list_img{
        width: 48.5%;
        margin-bottom: 20px;
    }
    .pcb .list{
        grid-template-columns: repeat(2, 1fr);
    }
}