.section{
    overflow: hidden;
}
.section .wrap{
    width: 1420px;
    margin: 79px auto 40px;
}
.section .wrap .title{
    margin: 0 auto 109px;
}
.section .wrap .title .headline{
    font-size: 40px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #333333;
    text-align: center;
    margin: 0 0 67px 0;
}
.section .wrap .title .content{
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.section .wrap .title .content .pick{
    width: 672px;
}
.section .wrap .title .content .pick p{
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #666666;
    line-height: 32px;
}
.section .wrap .title .content .picture{
    width: 660px;
    height: 430px;
    overflow: hidden;
}
.section .wrap .title .content .picture img{
    width: 100%;
    height: 100%;
}
.section .wrap .function .headline{
    text-align: center;
}

.section .wrap .function .headline span{
    font-size: 40px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #333333;
    display: block;
    margin: 0 0 23px 0;
}
.section .wrap .function .headline p{
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #666666;
}
.section .wrap .function .matter{
    margin: 105px 0 0 0;
    display: flex;
    flex-wrap: wrap;
}
.section .wrap .function .matter .item{
    width: 440px;
    margin: 0 50px 50px 0;
    text-align: center;
}
.section .wrap .function .matter .item:nth-child(3n){
    margin: 0 0 50px 0;
}
.section .wrap .function .matter .item .icon{
    width: 220px;
    height: 247px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 80px;
}
.section .wrap .function .matter .item .icon img{
    max-width: 100%;
    max-height: 100%;
}
.section .wrap .function .matter .item .text span{
    font-size: 22px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #333333;
    margin: 0 0 22px 0;
    display: block;
}
.section .wrap .function .matter .item .text p{
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #666666;
    line-height: 26px;
}
.section2{
    overflow: hidden;
    height: 540px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.section2 .background{
    position: absolute;
    width: 100%;
    height: 100%;
}
.section2 .wrap{
    width: 1420px;
    position: relative;
    z-index: 1;
}
.section2 .wrap span{
    font-size: 40px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #FFFFFF;
    display: block;
    margin: 0 0 34px 0;
}
.section2 .wrap p{
    max-width: 800px;
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 32px;
}
.section3{
    overflow: hidden;
}
.section3 .wrap{
    width: 1420px;
    margin: 88px auto 119px;
}
.section3 .wrap .item:not(:last-child){
    margin: 0 0 117px 0;
}
.section3 .wrap .item .title{
    font-size: 40px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #333333;
    text-align: center;
    margin: 0 0 75px 0;
}
.section3 .wrap .item .content{
    display: flex;
    justify-content: space-between;
}
.section3 .wrap .item .content .images{
    width: 660px;
    height: 430px;
    overflow: hidden;
}
.section3 .wrap .item .content .images img{
    width: 100%;
    height: 100%;
    transition: 1.5s;
}
.section3 .wrap .item .content .text{
    margin: 30px 0 0 0;
    width: 672px;
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #666666;
    line-height: 32px;
}
.section3 .wrap .item:nth-child(2n) .content{
    flex-direction: row-reverse;
}
@media screen and (max-width: 1600px) {
    .section3 .wrap,.section .wrap,.section2 .wrap {
        width: 90%;
    }
    .section .wrap .title .headline,.section .wrap .function .headline span,.section2 .wrap span,.section3 .wrap .item .title {
        font-size: 32px;
    }
    .section .wrap .title .content .pick,.section .wrap .title .content .picture,.section3 .wrap .item .content .images,.section3 .wrap .item .content .text,.section3 .wrap .item .content .text,.section3 .wrap .item .content .images {
        width: 49%;
    }
    .section .wrap .function .matter .item {
        width: 32%;
        margin: 0 1.333% 50px 0;
    }
}
@media screen and (max-width: 1024px) {
    .section .wrap .title .content {
        flex-direction: column-reverse;
    }
    .section .wrap .title .headline,.section .wrap .function .headline span,.section2 .wrap span,.section3 .wrap .item .title {
        font-size: 24px;
    }
    .section .wrap .title .content .pick,.section .wrap .title .content .picture,.section3 .wrap .item .content .images,.section3 .wrap .item .content .text,.section3 .wrap .item .content .text,.section3 .wrap .item .content .images {
        width: 100%;
    }
    .section .wrap .function .matter .item{
        width: 100%;
        margin: 0 0% 30px 0;
    }
    .section3 .wrap .item .content {
        flex-direction: column!important;
    }
    .section .wrap .title .content .picture,.section3 .wrap .item .content .images {
        height: auto;
    }

}
@media screen and (max-width: 800px) {
    .section .wrap {
        margin: 40px auto 40px;
    }
    .section .wrap .title .headline {
        margin: 0 0 30px 0;
    }
    .section .wrap .title .content .picture {
        margin: 0 0 10px 0;
    }
    .section .wrap .title{
        margin: 0 auto 19px;
    }
    .section .wrap .function .matter{
        margin: 45px 0 0 0;
    }
    .section .wrap .function .matter .item .icon {
        margin: 0 auto 40px;
    }
    .section2 {
        height: 500px;
    }
    .section3 .wrap .item .title {
        margin: 0 0 30px 0;
    }
    .section3 .wrap .item:not(:last-child){
        margin: 0 0 37px 0;
    }
    .section3 .wrap {
        margin: 40px auto 40px;
    }
}