.sec1{
    width: 100%;
    background-size: cover;
}
.sec1 .img{
    width: 100%;
    overflow: hidden;
}
.sec1 img{
    width: 100%;
    transition: 3s;
    transform: scale(1.1);
}
.sec1 .nav{
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%,50%);

    width: 1200px;
    height: 110px;
    background: #FFFFFF;
    box-shadow: 0px 10px 33px 7px rgba(0, 0, 0, 0.09);
    border-radius: 20px;
    display: flex;
    justify-content: space-between;
    z-index: 99999999;
}
.sec1 .nav .left{
    margin-left: 39px;
    width: 130px;
    border-right: 1px solid rgba(198, 198, 198, .22);
}
.sec1 .nav .right{
    /*margin-right: 61px;*/
    display: flex;
    width: 860px;
    justify-content: center;
    padding-right: 170px;
}
.sec1 .nav .right a{
    display: block;
    margin-left: 80px;
    display: block;
    cursor: pointer;
    transition: 0.6s;
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #000000;
}
.sec1 .nav .right a.sel{
    color: #EA5404;
}
.sec1 .nav .right a:hover{
    color: #EA5404;
}
.sec1 .nav a{
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #000000;
    transition: 0.6s;

}
.sec1 .nav a:hover,.sec1 .nav a:hover i{
    color: #EA5404;
}
.sec1 .nav a i{
    font-size: 24px;
    margin-right: 20px;
    transition: 0.6s;
}

.sec2{
    overflow: hidden;
    width: 100%;
}
.sec2-warp{
    width: 1420px;
    margin:150px auto 30px;
}
.sec2-warp .top{
    width: 564px;
    height: 42px;
    border: 1px solid #E4E5DF;
    border-radius: 10px;
    margin: auto;
    margin-bottom: 87px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sec2 .sec2-warp .top input {
    border: 0px;
    width: 400px;
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 500;
    color: #232323;
    line-height: 26px;
    opacity: 0.45;
    text-indent: 20px;
}
.sec2 .sec2-warp .top a {
    width: 131px;
    height: 42px;
    background: #EA5404;
    border-radius: 0px 10px 10px 0px;
    text-align: center;
    line-height: 42px;
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #FFFFFF;
}
.down-big{
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column;
    margin-top: 34px;
}
.down-big .item{
    width: 1330px;
    height: auto;
    background: #F5F5F5;
    margin-bottom: 23px;
    padding: 0px 60px 0px 30px;

}
.down-big .item .item-top{
    height: 80px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.down-big .item .item-top span{
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 600;
    color: #232323;
}
.down-big .item .item-top .click{
    width: 30px;
    height: 30px;
    background: #EA5404;
    position: relative;
    cursor: pointer;
}
.down-big .item .item-top .click .shu{
    height: 10px;
    width: 2px;
    background: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%) rotate(90deg);
    transition: 0.6s;
}
.down-big .item .item-top .click .heng{
    width: 10px;
    height: 2px;
    background: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.down-big .item .item-top .click.active .shu{
    transform:translate(-50%,-50%) rotate(0deg);
}
.down-big .item .downing{
    width: 100%;
    height: auto;
    display: none;
}
.down-big .item .downing .big{
    width: 100%;
    display: flex;
    padding-top: 30px;
    flex-wrap: wrap;
}
.down-big .item .downing .big .down-item{
    margin-right: 117px;
    width: 579px;
    height: 56px;
    background: #FFFFFF;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 56px;
}
.down-big .item .downing .big .down-item:nth-child(2n){
    margin-right: 0px;
}
.down-big .item .downing .big .down-item span{
    text-indent: 28px;
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #232323;
}
.down-big .item .downing .big .down-item a{
    display: block;
    width: 131px;
    height: 56px;
    background: #EA5404;
    text-align: center;
    line-height: 56px;

    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #FFFFFF;
}
.down-big .item .downing .big .down-item a i{
    font-size: 20px;
}
@media screen and (max-width: 1800px){
    .sec2-warp {
        width: 90%;
    }
    .down-big .item {
        width: 100%;
        padding: 0;
    }
    .down-big .item .item-top span {
        margin-left: 20px;
    }
    .down-big .item .item-top .click {
        margin-right: 20px;
    }
    .down-big .item .downing .big {
        justify-content: space-between;
    }

    .down-big .item .downing .big .down-item {
        width: 45%;
        margin-right: 20px!important;
        margin-left: 20px;
    }
}
@media screen and (max-width: 768px){
    .sec1 {
        margin-top: 80px;
    }
    .sec1 .nav {
        width: 90%;
        height: auto;
    }
    .sec1 .nav .right {
        margin: 0;
        padding: 0;
    }
    .sec1 .nav .right a {
        font-size: 14px;
        margin: 0;
        width: 30%;
    }
    .sec1 .nav a {
        font-size: 14px;
    }
    .sec1 .nav .left {
        margin: 10px 0 10px 39px;
    }
    .sec2-warp .top {
        width: 100%;
        margin-bottom: 30px;
    }
    .sec2-warp {
        margin: 80px auto 30px;
    }
    .down-big .item .downing .big .down-item {
        width: 100%;
    }
}