.sub-banner>.container{
    transform: translate3d(-50%,0,0)!important;
    top: auto;

    bottom: 4vw;

}

.banner-txt h2{
    /* font-size: 70px; */
    font-size: calc(14px   2.91vw);
    margin-bottom: 1.04vw;
}

.banner-txt p{
    /* font-size: 26px; */
    font-size: var(--size-26);
    line-height: 1.8;
}

.num-wrap {
    margin-top: 4.5vw;
}
.num-wrap dl{
    display: inline-block;
    color: #fff;
    margin-right: 3.125vw;
    vertical-align: middle;
}

.num-wrap dt{
    font-size: var(--size-18);
}
.num-wrap dd{
    margin-top: 10px;
}
.num-wrap dd b{
    font-size: 35px;
}

.num-wrap dd i{
    height: 16px;
    display: inline-block;
    line-height: 16px;
}

.num-wrap dd i,
.num-wrap dd span{
    font-size: calc(14px   3.43vw);

}

/* section1 */
.section-topic1 {
    padding-top: 4vw;
    background:  no-repeat top center #fafafa;
}
.section-topic1 .top{
    padding-left: 9.2vw;
    margin-bottom: 24px;
    padding-right: 4.9vw;
    background:  no-repeat bottom center;
    background-size: 100% auto;
    padding-bottom: 90px;
}

.section-topic1 .img-bg{
    margin-bottom: 7.8125vw;
    margin-top: 3.33vw;
}

.section-topic1 .row{
    display: flex;
    align-items: flex-start;

}
.section-topic1 .top  h2{
    font-size: var(--size-40);
    color: #0e62ec;
}

.section-topic1 .top  h3{
    font-size: var(--size-18);
    color: #000;
    margin-top: 7px;
    margin-bottom: 1.56vw;
}
.section-topic1 .top .txt-con{
    width: calc(100% - 33.4375vw);
    padding-right: 7.2vw;
    box-sizing: border-box;
}
.section-topic1 .top .txt-con p{
    font-size: var(--size-18);
    color: #666666;
    /* line-height: 32px; */
    margin-top: 30px;
    line-height: 1.8;
}
.section-topic1 .top .txt-con p:first-child{
    margin-top: 13px;
}
.section-topic1 .top .img-con{
    position: relative;
    width: 33.4375vw;
    height: 22.81vw;
    overflow: hidden;
}

.section-topic1 .top .img-con img{
    width: 100%;
    height: 100%;
    transition: all .4s ease;
}
.section-topic1 .top .img-con:hover img{
    transform: scale(1.1);
}

.btn-video{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate3d(-50%,-50%,0);
    color: #fff;
    position: absolute; 
    width: 86px;
    height: 86px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .2);
    cursor: pointer;
}


.btn-video::before{
    display: inline-block;
    content: "";
   width: 100%;
   height: 100%;
   background:  no-repeat center;
   background-size: cover;
   animation: zz 2s linear infinite;

}
.btn-video .btn-play{
    width: 0;
    height: 0;
    border: 10px solid #fff;
    border-top-color: transparent;
    border-bottom-color: transparent;
    border-right: 0;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate3d(-50%,-50%,0);
}

@keyframes zz{
    0%{
        transform: rotate(0);
    }
    100%{
        transform: rotate(360deg);
    }

}

/* 手风琴 */
.items-bg {
    padding-top: 3vw;
    padding-bottom: 3.5vw;
    background-color: #13182e   ;
}
.items-bg .com-title h2,
.items-bg .com-title{
    color: #fff;
}

.items-bg .com-title{
    margin-bottom: calc(14px   1.77vw);
}

.section-topic1 .items{
    display: flex;
    justify-content: space-between;
}
.section-topic1 .item{
    width: 17.96vw;
    /* width: 14.368vw; */
    height: 28.22vw;
    min-height: 220px;
    position: relative;
    overflow: hidden;
    transition: width .7s ease;
    cursor: pointer;
}

.section-topic1 .item::after{
    content: "";
    display: block;
    width: 100%;
    height: 360px;
    position: absolute;
    z-index: 0;
    left: 0;
    bottom: 0;
    opacity: 0;
    background:  no-repeat center;
    transition: opacity .4s ease
}

.section-topic1 .item .show-txt{
    width: 17.96vw;
}
.section-topic1 .item .show-txt,
.section-topic1 .item .hide-txt{
    position: absolute;
    color: #fff;
    z-index: 9;
    left: 0;
}

.section-topic1 .item .show-txt{
    top: 50%;
    transform: translatey(-50%);
    text-align: center;
    transition: all .8s ease;
}

.section-topic1 .item .hide-txt{
    bottom: 0;
    padding: 0 2vw 2vw;
    box-sizing: border-box;
    opacity: 0;
    transform: translatey(60px);
    transition: transform .55s ease;

}
.section-topic1 .item .show-txt,
.section-topic1 .item .hide-txt h2{
    /* font-size: 30px; */
    font-size: calc(14px   .83vw);
    color: #fff;
}
.section-topic1 .item .hide-txt p{
    font-size: var(--size-16);
    line-height: 30px;
    margin-top: 15px;
    max-height: 168px;
    overflow: hidden;
}


.section-topic1 .item.active{
    width: calc(100% - 17.96vw - 15px);
}


.section-topic1 .item.active .show-txt{
    opacity: 0;
}

.section-topic1 .item.active .hide-txt{
    opacity: 1;
    /* width: 62.5vw; */
    width: 50vw;
    transition-delay: .01s;
    transform: translatey(0);
}


.section-topic1 .item.active::after{
    opacity: 1;
}


.section-topic1 .item::before{
    content: "";
    width: 100%;
    height: 100%;
    background: #000;
    position: absolute;
    left: 0;
    top: 0;
    opacity: .3;
    transition: all 1s ease;
}
.section-topic1 .item.active::before{
    opacity: 0;
}


/* 2 */
.section-topic2{
    padding-bottom: 6vw;
    padding-top:4.4vw;
}
.section-topic2 .s-item2,
.section-topic2 .s-item1{
    width: 50%;
    position: relative;
}
.section-topic2 .img-con{
    width: 100%;
    height: 100%;
}

.section-topic2 .col-space14>*{
    padding-left: 7px;
    padding-right: 7px;
}

.section-topic2 .col-space14{
    margin-left: -7px;
    margin-right: -7px;
    display: flex;
}


.section-topic2 .txt-con{
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;

    color: #fff;
    padding: 2vw 2.2vw;
    box-sizing: border-box;
}

.section-topic2 .txt-con h2{
    font-size: var(--size-24);
    margin-bottom: 1vw;
}
.section-topic2 .txt-con p{
    font-size: var(--size-16);
    line-height: 1.8;
    height: 140px;
    overflow: hidden;
}

.section-topic2 .img-con{
    overflow: hidden;
}

.section-topic2 .img-con img{
    transition: all .35s ease;
    width: 100%;
    height: 100%;
}



.section-topic2 .img-con:hover img{
    transform: scale(1.1);
    -webkit-transform: scale(1.1);
}


/* 3 */
.section-topic3 {
    height: 46.875vw;
    background:  no-repeat center;
    background-size: cover;
}

.section-topic3 .container{
    position: relative;
    height: 100%;
}
.section-topic3 .txt-con{
    position: absolute;
    color: #fff;
    left: 0;
    top: 50%;
    transform: translate3d(0,-50%,0);

    width: 32vw;
}

.section-topic3 .txt-con h2{
    font-size: var(--size-40);
}

.section-topic3 .txt-con h3{
    font-size: var(--size-26);
    margin-top: .9vw;
    margin-bottom: 1.5625vw;
}
.section-topic3 .txt-con p{
    font-size: var(--size-18);
    line-height: 2;
}   






@media (max-width: 1800px) {
    .section-topic1 .top .txt-con p{
        /* line-height: 30px; */
        margin-top: 25px;
    }    
}

@media (max-width: 1600px) {
    /* .section-topic1 .item .show-txt, .section-topic1 .item .hide-txt h2{
        font-size: 24px;
    } */
    .section-topic2 .txt-con .hide-info,
    .section-topic1 .item .hide-txt p{
        line-height: 28px;
    }
}

@media (max-width: 1440px) {
    .section-topic1 .top .txt-con p{
        /* line-height: 28px; */
        margin-top: 20px;
    }    
    .section-topic1 .top .txt-con p:first-child{
        margin-top: 0;
    }


    .section-topic2 .txt-con .hide-info{
        max-height: 78px;
    }
    .section-topic2 .txt-con .hide-info, .section-topic1 .item .hide-txt p{
        line-height: 26px;

    }
    .section-topic1 .item .hide-txt p{
        max-height: 160px;
    }
    .section-topic2 .s-item1:hover .txt-con h2, .section-topic2 [class^="col-md"]:hover .txt-con h2{
        transform: translate3d(0,-10px,0);
    }

    /* .section-topic3 .txt-con h2,
    .section-topic1 .top h2{
        font-size: 34px;
    } */

    .num-wrap dd b{
        font-size: 26px;
    }
  
}

@media (max-width: 1300px) {
    .section-topic1 .item.active .hide-txt{
        width: 70.5vw;
    }
    .btn-video{
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 1024px) {
    .section-topic3 .txt-con{
        width: 50%;
    }
     /* .num-wrap dd span, .banner-txt h2{
        font-size: 40px;
    } */
    /* .num-wrap dt, .banner-txt p{
        font-size: 20px;
    } */
    .num-wrap dd b{
        font-size: 18px;
    }
    .section-topic1 .top{
        width: 90%;
        margin-left: auto;
        margin-right: auto;
        padding-left: 0;
        padding-right: 0;

    }
    .section-topic1 .top .txt-con{
        padding-right: 3vw;
    }


}

@media (max-width: 992px) {
    .section-topic2 .col-space14{
        display: block;

    }
    .section-topic2 .s-item2, .section-topic2 .s-item1, .section-topic2 .col-md6{
        width: 100%;
    }

    .section-topic2 .col-space14>*{
        height: auto;
    }

    .section-topic2 .txt-con{
        padding: .5rem;
    }
    .section-topic2 .s-item2{
        margin-top: 14px;
    }

    .section-topic2 .txt-con p{
        height: auto;
    }
    .section-topic2 .s-item1 .img-con img{
        height: auto;
    }

    .section-topic1 .row{
        display: block;
    }
    .section-topic1 .top .img-con,
    .section-topic1 .top .txt-con{
        width: 100%;
        height: auto;
    }
    .section-topic1 .top .img-con{
        margin-top: 15px;
    }
    .section-topic1 .top .txt-con{
        padding-right: 0;
    }
    .section-topic1 .top .txt-con p{
        margin-top: 10px;
    }

    .section-topic1 .item .hide-txt p{
      
        max-height: initial;
    }
    .section-topic1 .items{
        display: block;
    }
    .section-topic1 .item{
        margin-top: .5rem;
        height: auto;
    }

    .section-topic1 .item,
    .section-topic1 .item.item.active{
        width: 100%;

    }
    .section-topic1 .item::before,
    .section-topic1 .item .show-txt{
        opacity: 0!important;
    }
    .section-topic1 .item::after{
        opacity: 1!important;
    }
    .section-topic1 .item .hide-txt{
        opacity: 1!important;
        transform: translatey(0)!important;
    }

    .section-topic1 .item .hide-txt{
        width: 100%;
        padding: 1rem .5rem;
    }

    .section-topic1 .item.active .hide-txt{
        width: 100%;
    }

    .section-topic1 .item .hide-txt{
        position: relative;

    }
}
@media (max-width: 768px) {
    .sub-banner>.container{
        bottom: auto;
        top: 50%;
        transform: translate3d(-50%,-50%,0)!important;
    }
    .sub-banner img{
        height: 300px;
    }
    .num-wrap{
        margin-top: 3vw;
    }

    .num-wrap dd i{
        font-size: 30px;
    }
 
  
   
    /* .section-topic3 .txt-con p,
    .section-topic2 .txt-con .hide-info,
    .section-topic1 .item .hide-txt p{
        line-height: 24px;
    }
   */
    .section-topic2 .txt-con h2{
        transform: translate3d(0,-10px,0);

    }
    .section-topic2 .txt-con .hide-info{
        transform: translate3d(0,0,0);
        opacity: 1;
        max-height: 72px;
    }

  
  
 
    .section-topic1 .item .show-txt, .section-topic1 .item .hide-txt h2{
        font-size: 20px;
    }
    .section-topic1 .item .hide-txt p{
        margin-top: .35rem;
        line-height: 1.6;
    }
    .num-wrap dd b {
        font-size: 16px;
    }
    .num-wrap dd{
        margin-top: 5px;
    }

    .com-title p{
        line-height: 1.5;
        padding: 0 2rem;
    }


}

@media (max-width: 640px) {
    .section-topic3 .txt-con{
        width: 100%;
    }
    .section-topic2 .txt-con .hide-info{
        display: none;
    }

    .section-topic2 .txt-con h2{
        transform: translate3d(0,0,0);
    }

    /* .num-wrap dd span i, .num-wrap dd span{
        font-size: 20px;
    } */
    .num-wrap dt, .banner-txt p{
        font-size: 15px;
    }
    .num-wrap dd b {
        font-size: 14px;
    }

    .num-wrap{
        margin-top: 3vw;
    }


    .section-topic2 .txt-con h2{
        margin-bottom: 10px;
    }
    .section-topic1 .item .hide-txt p,
    
    .section-topic2 .txt-con p{
        line-height: 1.5;
    }
}

@media (max-width: 480px) {
    .sub-banner img{
        height: 230px;
    }
    .section-topic1 .top .txt-con p{
        line-height: 1.7;
    }
    .section-topic1 .top{
        padding-bottom: 46px;
    }

    .section-topic3 .txt-con p{
        font-size: 14px;
        line-height: 1.6;
    }

    .com-title p{
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .banner-txt p{
        line-height: 1.6;
    }
}