.section{
    width: 100%;
    position: relative;
    background: transparent;
    padding-top: 137px;
}
.section:after{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 70vh;
    background: #fff;
    z-index: 0;
}
@media screen and (max-width: 1920px) {
    .section:after{
        height: 100vh;
    }
}
.section .warp{
    width: 1605px;
    margin: auto;
    position: relative;
    z-index: 1;
}
.section .warp .title{
    display: flex;
    margin-bottom: 55px;
}
.section .warp .title > span{
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    margin-right: 526px;
}
.section .warp .title p{
    width: 690px;
    font-size: 20px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #252525;
    line-height: 33px;
    display: flex;
}
.section .warp .title p span{
    color: #252525!important;
    display: contents;
}
.section .warp .content{
    display: flex;
    justify-content: center;
}
.section .warp .content .images{
    width: 808px;
    height: 682px;
    position: relative;
}
.section .warp .content .images img{
    width: 100%;
    height: 100%;
}
.section .warp .content .introduce{
    width: 808px;
    height: 651px;
    background: #F9F1E9;
    margin-top: 133px;
    position: relative;
}
.section .warp .content .introduce .interval{
    margin-left: 90px;
    margin-top: 74px;
}
.section .warp .content .introduce .interval > p{
    width: 631px;
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    line-height: 28px;
}

.section .warp .content .introduce .interval .clearfix{
    margin-top: 16px;
    margin-bottom: 108px;
    display: flex;
}
.section .warp .content .introduce .interval .clearfix span{
    font-size: 60px;
    font-family: Canela;
    font-weight: 400;
    color: #1C1C1C;
    min-width: 130px;
}
.section .warp .content .introduce .interval .clearfix span:nth-child(2){
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    margin-top: 32px;
}

.section2{
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background-size: cover!important;
    margin-top: -390px;
}
@media screen and (max-width: 1920px) {
    .section2{
        height: auto;
    }
}
.section2 .warp{
    margin: 489px auto 136px;
}
.section2 .warp .title{
    width: 1605px;
    margin: auto;
    font-size: 36px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #FFFFFF;
}
.section2 .warp .content{
    width: 1560px;
    margin: 159px auto 0;
}
.section2 .warp .content .course_num{
    width: 100%;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}
.section2 .warp .content .course_num:after{
    content: '';
    position: absolute;
    top: 82.7%;
    left: 50%;
    width: 1560px;
    transform: translateX(-50%);
    height: 1px;
    background: rgba(255,255,255,0.3);
}
.section2 .warp .content .course_num2{
    width: 100%;
}
.section2 .warp .content .course_num .swiper-slide{
    text-align: center;
    position: relative;
    /*left: -675px;*/
}
.section2 .warp .content .course_num .swiper-slide span{
    transform: scale(0.6);
    font-size: 46px;
    font-family: Canela;
    font-weight: 400;
    color: #FFFFFF;
    opacity: 0.5;
    transition: 0.6s;
    min-height: 48px;
}
.section2 .warp .content .course_num .swiper-slide-active span{
    transform: scale(1);
}

.section2 .warp .content .course_num .swiper-slide .circle{
    width: 50px;
    height: 50px;
    border: 1px solid transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 50px auto 0;
    transition: 0.6s;
    opacity: 0.7;
}
.section2 .warp .content .course_num .swiper-slide-active .circle{
    border: 1px solid #fff;
    opacity: 1;
}
.section2 .warp .content .course_num .swiper-slide .circle div{
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 50%;
}
.section2 .warp .content .course_num .swiper-slide-active span{
    opacity: 1;
}
.section2 .rolling .line{
    width: 840px;
    height: 1px;
    background: rgba(255,255,255,0.3);
    margin: 73px auto;
    position: relative;
}
.section2 .rolling .line:after{
    content: '';
    position: absolute;
    top: -6px;
    left: 0;
    width: 1px;
    height: 10px;
    background: #FFFFFF;
    opacity: 0.3;
}
.section2 .rolling .line:before{
    content: '';
    position: absolute;
    top: -6px;
    right: 0;
    width: 1px;
    height: 10px;
    background: #FFFFFF;
    opacity: 0.3;
}
.section2 .rolling .line .swiper-scrollbar{
    height: 1px;
}
.section2 .rolling .line .swiper-scrollbar-drag{
    background: #fff;
}
.section2 .rolling .scroll{
    text-align: center;
}
.section2 .rolling .scroll .down_warp{
    width: 18px;
    height: 28px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 2px solid #fff;
    margin: auto;
}
.section2 .rolling .scroll .down_warp div{
    width: 2px;
    height: 6px;
    background: #fff;
    position: relative;
    top: -3px;
    animation: down 1s infinite linear;
}

@keyframes down {
    0% {
        top: -11px;
        opacity: 1;
    }
    100% {
        top: 6px;
        opacity: 0;
    }
}
.section2 .rolling{
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 50px;
}
.section2 .rolling .scroll{
    margin-left: 50px;
    margin-right: 50px;
}
.section2 .rolling .scroll p{
    font-size: 12px;
    font-family: Source Han Sans CN;
    font-weight: 200;
    color: #FFFFFF;
    margin-top: 10px;
    letter-spacing: 2px;
}
.section2 .rolling .swiper-button-prev{
    transform: rotate(-90deg);
}
.section2 .rolling .swiper-button-next{
    transform: rotate(90deg);
}
.section2 .rolling .item{
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: static;
    transition: 0.6s;
}
.section2 .rolling .item:hover{
    background: #ffad5a;
}
.section2 .rolling .item:hover .iconfont{
    color: #fff;
}
.section2 .rolling .item:after{
    display: none;
}
.section2 .rolling .item .iconfont{
    font-size: 25px;
    color: #c3c0c0;
    transition: 0.6s;
}
.course_text{
    width: 100%;
    text-align: center;
    margin-top: 134px;
}
.course_text .swiper-slide p{
    font-size: 20px;
    font-family: Source Han Sans CN;
    font-weight: 200;
    color: #FFFFFF;
    opacity: 0;
    transition: 0.6s;
}
.course_text .swiper-slide-active p{
    opacity: 1;
}
.section3{
    width: 100%;
    overflow: hidden;
    background: #fff;
}
.section3 .warp{
    margin: 138px auto 0;
}
.section3 .warp .details{
    width: 1605px;
    margin: auto;
}
.section3 .warp .details .title{
    font-size: 36px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    margin-bottom: 104px;
}
.section3 .warp .details .content{
    display: flex;
}
.section3 .warp .details .content .images{
    width: 724px;
    height: 927px;
    overflow: hidden;
    margin-right: 170px;
}
.section3 .warp .details .content .images img{
    cursor: pointer;
    width: 100%;
    height: 100%;
    transition: 2s;
}
.section3 .warp .details .content .images img:hover{
    transform: scale(1.05);
}
.section3 .warp .details .content .text{
    margin-top: 108px;
}
.section3 .warp .details .content .text .item {
    margin-bottom: 90px;
}
.section3 .warp .details .content .text .item:last-child{
    margin-right: 0;
}
.section3 .warp .details .content .text .item span{
    font-size: 24px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    margin-bottom: 24px;
}
.section3 .warp .details .content .text .item p{
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #372F2B;
}
.section3 .warp .details2{
    margin: 217px auto 0;
    position: relative;
}
.section3 .warp .details2 .text {
    width: 1605px;
    margin: auto;
    position: relative;
    left: 155px;
}
.section3 .warp .details2 .text span{
    font-size: 36px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    margin-bottom: 72px;
}
.section3 .warp .details2 .text p{
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    font-style: italic;
    color: #292828;
    line-height: 32px;
}
.section3 .warp .details2 .images{
    position: absolute;
    right: 0;
    top: -285px;
    width: 400px;
    height: 692px;
    overflow: hidden;
}
.section3 .warp .details2 .images img{
    width: 100%;
    height: 100%;
    transition: 2s;
    cursor: pointer;
}
.section3 .warp .details2 .images img:hover{
    transform: scale(1.05);
}
.section3 .warp .details3{
    width: 100%;
    height: 686px;
    background-color: #FAFAFA;
    margin-top: 151px;
    display: flex;
    align-items: center;
}
.section3 .warp .details3 .images{
    width: 55%;
    height: 100%;
}
.section3 .warp .details3 .images img{
    width: 100%;
    height: 100%;
}
.section3 .warp .details3 .text{
    margin-left: 105px;
}
.section3 .warp .details3 .text h2{
    font-size: 36px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    margin-bottom: 44px;
}
.section3 .warp .details3 .text .brand{
    display: flex;
    margin-bottom: 107px;
}
.section3 .warp .details3 .text .brand p{
    font-size: 18px;
    font-family: Source Han Sans CN;
    font-weight: 500;
    color: #757574;
    margin-right: 20px;
    cursor: pointer;
    transition: 0.4s;
}
.section3 .warp .details3 .text .brand .active{
    color: #1C1C1C;
}
.section3 .warp .details3 .text .brand p:last-child{
    margin-right: 0;
}
.section3 .warp .details3 .text .brand_warp{
    width: 630px;
    position: relative;
}
.section3 .warp .details3 .text .brand_warp p{
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #1C1C1C;
    line-height: 28px;
    opacity: 0;
    position: relative;
    left: 70px;
    transition: 1s;
}
.section3 .warp .details3 .text .brand_warp .swiper-slide-active p{
    opacity: 1;
    left: 0;
}

.banner_background {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    /* width: calc(93.4vw - 3%); */
    height: 100vh;
    padding-top: 88px;
}
.banner_background img {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: 1s;
}
.banner_background .active{
    opacity: 1;
}

@media screen and (max-width: 1856px) {
    .section:after {
        height: 73vh;
    }
}
@media screen and (max-width: 1680px) {
    .section .warp{
        width: 80%;
    }
    .section .warp .content .introduce .interval > p{
        width: 527px;
    }
    .section2 .warp .title{
        width: 80%;
    }
    .section2 .warp .content{
        width: 80%;
    }
    .section3 .warp .details{
        width: 80%;
    }
    .section3 .warp .details3 .text {
        margin-left: 71px;
    }
}
@media screen and (max-width: 1600px) {
    .section3 .warp .details3 .text .brand_warp {
        width: 584px;
    }
    .section .warp .content .introduce .interval > p {
        width: 458px;
    }
}
@media screen and (max-width: 1440px) {
    .section .warp .title p{
        width: 547px;
    }
    .section .warp .content .introduce .interval{
        margin-left: 62px;
    }
    .section3 .warp .details3 .text .brand_warp {
        width: 509px;
    }
}
@media screen and (max-width: 1400px) {

}
@media screen and (max-width: 1366px) {
    .section .warp .title p {
        width: 489px;
        font-size: 17px;
    }
    .section .warp .content .introduce .interval {
        margin-left: 44px;
    }
    .section:after {
        height: 100vh;
    }
}
@media screen and (max-width: 1024px) {
    .section{
        overflow: hidden;
    }
    .section .warp{
        width: 90%;
        margin: 0 auto 50px;
    }
    .section .warp .title > span{
        margin-right: 0;
        font-size: 12px;
        margin-bottom: 20px;
    }
    .section .warp .title{
        flex-direction: column;
        margin-bottom: 38px;
    }
    .section .warp .title p {
        width: 100%;
        font-size: 15px;
        line-height: 28px;
    }
    .section .warp .content{
        flex-direction: column;
    }
    .section .warp .content .images{
        top: 0!important;
        width: 100%;
        height: auto;
    }
    .section .warp .content .introduce{
        margin-top: -5px;
        width: 100%;
        height: auto;
    }
    .section .warp .content .introduce .interval {
        margin: 20px;
    }
    .section .warp .content .introduce .interval > p{
        width: 100%;
        font-size: 12px;
        line-height: 26px;
    }
    .section .warp .content .introduce .interval .clearfix span{
        font-size: 46px;
    }
    .section .warp .content .introduce .interval .clearfix span:nth-child(2){
        font-size: 12px;
    }
    .section .warp .content .introduce .interval .clearfix{
        margin-bottom: 55px;
    }
    .section:after{
        height: 100%;
    }
    .section2{
        margin-top: 0;
    }
    .section2 .warp {
        margin: 63px auto 73px;
    }
    .section2 .warp .title{
        width: 90%;
        font-size: 28px;
        text-align: center;
    }
    .section2 .warp .content{
        width: 90%;
        margin: 64px auto 0;
    }
    .section2 .warp .content .course_num .swiper-slide span{
        font-size: 30px;
    }
    .section2 .warp .content .course_num .swiper-slide .circle{
        width: 30px;
        height: 30px;
        margin: 27px auto 0;
    }
    .section2 .warp .content .course_num:after{
        top: 84.7%;
    }
    .course_text{
        margin-top: 75px;
    }
    .course_text .swiper-slide p{
        font-size: 14px;
    }
    .section3 .warp {
        margin: 65px auto 0;
    }
    .section3 .warp .details {
        width: 90%;
    }
    .section3 .warp .details .title{
        font-size: 28px;
        margin-bottom: 45px;
    }
    .section3 .warp .details .content{
        flex-direction: column;
    }
    .section3 .warp .details .content .images{
        width: 100%;
        height: auto;
    }
    .section3 .warp .details .content .text {
        margin-top: 27px;
    }
    .section3 .warp .details .content .text .item span{
        font-size: 22px;
        margin-bottom: 13px;
    }
    .section3 .warp .details .content .text .item {
        margin-bottom: 39px;
    }
    .section3 .warp .details .content .text .item p{
        font-size: 12px;
    }
    .section3 .warp .details2 .images{
        position: static;
    }
    .section3 .warp .details2{
        display: flex;
        flex-direction: column-reverse;
        width: 90%;
        margin: 40px auto 0;
    }
    .section3 .warp .details2 .images{
        width: 100%;
        height: auto;
    }
    .section3 .warp .details2 .text{
        left: 0;
        width: 100%;
        margin: 25px 0 0 0;
    }
    .section3 .warp .details2 .text span{
        font-size: 22px;
        margin-bottom: 17px;
    }
    .section3 .warp .details2 .text p{
        font-size: 12px;
        line-height: 31px;
    }
    .section3 .warp .details3{
        margin-top: 35px;
        flex-direction: column;
        padding: 30px 0;
    }
    .section3 .warp .details3 .images{
        width: 90%;
        margin: auto;
    }
    .section3 .warp .details3 .text{
        width: 90%;
        margin: 50px auto 0;
    }
    .section3 .warp .details3 .text h2{
        font-size: 22px;
        margin-bottom: 24px;
    }
    .section3 .warp .details3 .text .brand p{
        font-size: 16px;
    }
    .section3 .warp .details3 .text .brand {
        margin-bottom: 50px;
    }
    .section3 .warp .details3 .text .brand_warp{
        width: 100%;
    }
    .section3 .warp .details3 .text .brand_warp p{
        line-height: 26px;
    }
    .section3 .warp .details3 .text .brand_warp .swiper-slide-active p{
        transition-delay: 0.4s;
    }
}