.section1,
.section2,
.section3,
.section4{ 
    width: 100% !important;
    height: 100%;
    background: url(../images/img_beijing.png@2x_02-1920.png) center top no-repeat;
}
.section-bg{
    width: 100% !important;
    height: 100%;
    background: url(../images/yj-1920.png)right no-repeat;
    background-size: 100% 100%;
}
.section-row{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.section1 .section-row{
    margin-top: 190px;
}
.section-bg .section-row-01{
    margin-top: 339px;
}
.section2 .section-row{
    margin-top: 204px;
}
.section1 h3{
    font-size: 140px;
    font-family: Arial-Bold, Arial;
    font-weight: bold;
    color: #EEEEEE;
    margin-bottom: 239px;
}
.section-bg span{
    margin-left: 24px;
    font-size: 30px;
    font-family: Microsoft YaHei-Bold, Microsoft YaHei;
    font-weight: bold;
}
.section1 h5,
.section2 h5{
    margin-bottom: 91px;
    font-size: 50px;
    font-family: Arial-Bold, Arial;
    font-weight: bold;
    color: #EEEEEE;
}
.section1 h5 span,
.section2 h5 span{
    font-size: 26px;
    font-family: Microsoft YaHei-Bold, Microsoft YaHei;
    margin-left: 38px;
    vertical-align: middle;
    letter-spacing: 9px;
}
.section2 h5{
    margin-bottom: 0px;
}
.section1 ul,
.section2 ul{
    width: 100%;
    display: flex;
    justify-content: space-around;
    /* align-items: center; */
}
.section2 .ourResearch {
    width: 100%;
    display: flex;
}
.section2 .ourResearch-row {
    width: 33.3333333%;
    text-align: center;
    height: 365px;
    /* display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center; */
}
.section2 .ourResearch-row2 {
    margin: 0px 76px;
}

.section2 .ourResearch-row .ourResearch-ime,
.section2 .ourResearch-row .row-none{
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.section2 .ourResearch-row img{
    margin: 0px;
}
.section2 .ourResearch-row .row-none{
    /* opacity: 0; */
    display: none;
    margin-top: 74px;
    text-align: left;
 }
.section2 .ourResearch img{
    margin-top: 241px;
}
.section1 ul .line{
    /* width: 1px; */
    width: 0.5px;
    height: 365px;
    background-color: #C2C2C2;
    /* border: 1px solid #EEEEEE; */
    margin: 26px 35px 0px 33px;
}
.section1 ul .line01{
    margin-left: 33px;
    margin-right: 35px;
}
.section1 ul .step-one{
    width: 243px;
}
.section1 ul .line02{
    margin-right: 42px;
}
.section1 ul .line03{
    margin-left: 41px;
    margin-right: 37px;
}
.section1 ul .line04{
    margin-left: 40px;
    margin-right: 36px;
}
.section1 ul .line05{
    margin-left: 36px;
    margin-right: 39px;
}
/* .section-03 li{
    width: 33.33%;
} */
.section2 li:nth-of-type(2){
    margin-left: 76px;
    margin-right: 75px;
}
.section1 .research-title,
.section2 .research-title{
    font-size: 18px;
    font-family: Microsoft YaHei-Bold, Microsoft YaHei;
    font-weight: bold;
    color: #FFFFFF;
    margin-bottom: 29px;
}

.section1 .research-title span,
.section2 .research-title span{
    font-size: 20px;
    font-family: Arial-Bold, Arial;
    color: #AAF480;
}
.section1 .research-title .USA{
    color: #79F2A6;
}
.section1 .research-title .Japan{
    color: #4DD6D5;
}
.section1 .research-title .EuropeanUnion{
    color: #79CEFF;
}
.section1 .research-title .interface{
    color: #6EBAE8;
}
.section1 .research-title .application-fields{
    color: #B18AEF;
}
.section1 .research-title .classification{
    color: #91A2EF;
}
.section2 .research-title .dapengLaboratory{
    color: #AC8DF3;
}
.section2 .research-title .sleep{
    color: #C181D8;
}
.section2 .research-title .singularityLaboratory{
    color: #E26EA6;
}
.section1 .research-info,
.section2 .research-info{
    font-size: 16px;
    font-family: Microsoft YaHei-Regular, Microsoft YaHei;
    font-weight: 400;
    color: #D2D2D2;
    line-height: 35px;
}
/* 背景固定版本 */
.section-bg .section-row-01 {
    /* margin-top: 339px; */
    margin-top: 0px;
}
.section1 .section-row {
    margin-top: 0px;
    height: 100%;
    /* padding-top: 52px; */
    padding-top: 0px;

}
.section2 .section-row {
    margin-top: 0px;
    height: 100%;
}
.section-bg .section-row-01 {
    margin-top: 0px;
    padding-top: 0px;
    height: 100%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 106px;
}
.section-bg .section-row-01 h3{
    margin: 0px;
}
.section-bg .section-row-01 img{
    margin-top: 243px;
}
.section-02,
.section-03,
.section-04{
    background-attachment: fixed;
}
i{
    font-style: normal;
}