* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        background-repeat: no-repeat;
        background-size: 100% 100%;
        background-size: cover;
        background-position: center;
    }
    
    a {
        color: #FFFFFF;
        text-decoration: none;
        width: 100%;
        text-align: center;
    }
    
    li {
        list-style: none;
    }
    
    body {
        overflow: auto;
    }
    
    .main {
        min-height: 100vh;
        min-width: 1024px;
        max-width: 1920px;
        height: 100%;
    }
    
    .mainup {
        display: flex;
        flex-direction: column;
        height: 100vh;
    }
    
    .section {
        flex: 1;
        background-image: url('../img/safe/banner.jpg');
        background-size: 100% 100%;
        background-repeat: no-repeat;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .sectionbox {
        max-width: 1570px;
        text-align: center;
        width: 100%;
    }
    
    .name {
        font-size: 6.875rem;
        font-family: SourceHanSansCN-Bold, SourceHanSansCN;
        font-weight: bold;
        color: #FFFFFF;
        line-height: 165px;
    }
    
    .system {
        font-size: 4.375rem;
        font-family: SourceHanSansCN-Medium, SourceHanSansCN;
        font-weight: 500;
        color: #FFFFFF;
        line-height: 105px;
    }
    
    #headerul>li:nth-of-type(3)>a {
        color: rgba(59, 228, 234, 1)
    }
    
    .fixed {
        top: 0;
        width: 100%;
        position: fixed;
        z-index: 99999;
    }
    /* 中间部分 */
    
    .mainbox {
        width: 100%;
        height: 100%;
        display: flex;
        justify-content: center;
    }
    
    .middle {
        height: 100%;
        width: 100%;
        /* border: 1px solid red; */
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .middleone {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        background-color: rgba(240, 255, 254, 1);
    }
    
    .boxson {
        display: flex;
        justify-content: center;
        position: relative;
        width: 100%;
    }
    
    .boxson>div:nth-of-type(1) {
        border-image: linear-gradient(270deg, rgba(255, 255, 255, 0), rgba(5, 177, 169, 1), rgba(255, 255, 255, 0)) 2 2;
        border-bottom: 2px solid;
        display: flex;
        justify-content: center;
        font-size: 2.5rem;
        font-family: PingFang-SC-Heavy, PingFang-SC;
        font-weight: 800;
        color: #05B1A9;
        line-height: 86px;
        height: 86px;
    }
    
    .middletwo {
        max-width: 1570px;
        width: 100%;
    }
    
    .box {
        max-width: 1570px;
        width: 100%;
        display: flex;
        justify-content: center;
        font-size: 2.25rem;
        font-family: PingFang-SC-Bold, PingFang-SC;
        font-weight: bold;
        color: #FFFFFF;
    }
    
    .box>div:nth-of-type(1) {
        margin-right: 41px;
        background-image: url('../img/ghost/needleft.png');
    }
    
    .box>div:nth-of-type(2) {
        background-image: url('../img/ghost/needright.png');
    }
    
    .box>div {
        width: 50%;
        height: 43vh;
        background-repeat: no-repeat;
        background-size: 100% 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
    }
    
    .text {
        height: 59px;
        font-size: 16px;
        font-family: PingFang-SC-Medium, PingFang-SC;
        font-weight: 500;
        color: rgba(0, 0, 0, 0.85);
        line-height: 28px;
        text-align: center;
        margin-top: 40px;
    }
    
    .position {
        width: 100%;
        display: flex;
        align-items: center;
        flex-direction: column;
        background-position: center;
        background-size: 100%;
        background-repeat: no-repeat;
    }
    /* 
.posimg {
    border: 1px solid red;
} */
    
    #productPosition {
        margin-top: 80px;
    }
    
    .posone {
        max-width: 1570px;
        width: 100%;
        height: 0;
        padding-top: 49%;
        background-image: url('../img/safe/posone.png');
    }
    
    .postwo {
        width: 100%;
        height: 0;
        padding-top: 52%;
        background-image: url('../img/safe/postwo.png');
        margin-top: -10%;
    }
    
    #sceneone {
        margin-top: 80px;
        background-image: url('../img/safe/bj.png');
    }
    
    .posthree {
        width: 64%;
        padding-top: 20%;
        margin-top: 3%;
        margin-bottom: 3%;
        background-image: url('../img/safe/posthree.png');
    }
    
    #scenetwo {
        margin-top: 110px;
    }
    
    .posfour {
        width: 80%;
        height: 0;
        padding-top: 50%;
        margin-top: -100px;
        background-image: url('../img/safe/posfour.png');
    }
    
    #serviceworth {
        margin-top: 50px;
    }
    
    .posfive {
        width: 80%;
        padding-top: 50%;
        background-image: url('../img/safe/posfive.png');
    }
    
    @media screen and (max-width: 1919px) {
        html {
            font-size: 12px !important;
            font-family: "Microsoft YaHei", 微软雅黑
        }
        /* .middle {
        padding: 25px;
    } */
        .box {
            padding-left: 65px;
            padding-right: 65px;
        }
        .middleone {
            padding-left: 100px;
            padding-right: 100px;
        }
        .middletwo {
            padding-left: 65px;
            padding-right: 65px;
        }
        .card {
            padding: 0!important;
        }
        .sectionbox {
            padding-left: 65px;
            padding-right: 65px;
        }
        #ul {
            width: 100%;
            justify-content: center;
        }
        .headernav {
            width: 140px;
            height: 50px;
            line-height: 50px;
            background-size: 100% 100%;
        }
        #ul,
        .middletwo,
        .box {
            max-width: 1400px;
        }
        .postwo {
            width: 100%;
            height: 0;
            padding-top: 55%;
        }
        /* .posthree {
            max-width: 900px;
        } */
        /* .posfour {
            max-width: 1100px;
        } */
        .posfive {
            padding-top: 65%;
        }
    }
    
    @media screen and (min-width: 1920px) {
        html {
            font-size: 16px;
            font-family: "Microsoft YaHei", 微软雅黑
        }
    }