#down1,
#down2{
    scroll-margin-top: 2rem;
}

.down_bg{
    position: fixed;
    width: 8.82rem;
    height: 4.74rem;
    z-index: 1;
    bottom: 0;
    left: 50%;
    margin-left: -2rem;
}

.down_body{
    margin-top: 1.9rem;
    padding-bottom: 0.83rem;
    position: relative;
    z-index: 2;
}

.down_body .main{
    display: flex;
    justify-content: space-between;
}

.down_fl{
    width: 4rem;
}
.down_fl .down_nav{
    position: sticky;
    top: 2rem;
}
.down_fl .down_nav .nav_class{
    font-family: SC-Bold;
    font-weight: bold;
    font-size: 0.3rem;
    color: #000000;
    line-height: 1.4;
    margin-bottom: 0.64rem;
}
.down_fl .down_nav .nav_body{
    width: 100%;
    height: auto;
    background: #F7F7F7;
    border-radius: 0.1rem;
    padding: 0.4rem 0.36rem;
}
.down_fl .down_nav .nav_body span{
    font-family: SC-Medium;
    font-weight: 500;
    font-size: 0.2rem;
    color: #606060;
    margin-bottom: 0.28rem;
    display: block;
}
.down_fl .down_nav .nav_body .nav_url{
    display: flex;
    align-items: center;
    margin-bottom: 0.19rem;
    font-family: SC-Normal;
    font-weight: 400;
    font-size: 0.16rem;
    color: #606060;
    line-height: 1;
}
.down_fl .down_nav .nav_body .nav_url .nav_icon{
    width: 0.13rem;
    height: 0.13rem;
    background: rgba(255,255,255,0);
    border: 0.01rem solid #B2B2B2;
    margin-right: 0.12rem;
    display: flex;
    justify-content: center;
    align-items: center;
}
.down_fl .down_nav .nav_body .nav_url .nav_icon img{
    display: none;
    width: 0.1rem;
    height: 0.1rem;
    object-fit: contain;
}
.down_fl .down_nav .nav_body .nav_url.act{
    color: #80A749;
}
.down_fl .down_nav .nav_body .nav_url.act .nav_icon{
    background: #80A749;
    border: 0.01rem solid #7FA748;
}
.down_fl .down_nav .nav_body .nav_url.act .nav_icon img{
    display: block;
}


.down_fr{
    width: 11.4rem;
}

.down_fr form{
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-bottom: 0.01rem solid #E5E5E5;
}
.down_fr form .search_input{
    font-family: SC-Light;
    font-weight: 300;
    font-size: 0.18rem;
    color: #000;
    margin-bottom: 0.1rem;
    width: calc(100% - 0.6rem);
    background: none;
}
.down_fr form .search_input::placeholder{
    color: #A8A8A8;
}
.down_fr form .search_btn{
    width: 0.43rem;
    height: 0.43rem;
    background: url(../img/search_icon3.png) center no-repeat;
    background-size: contain;
    margin-bottom: 0.06rem;
}







.down_div{
    margin-top: 0.63rem;
}
.down_div .class_more{
    margin: 0.4rem auto 0;
}
.down_div .page_box{
    margin-top: 0.6rem;
}
.down_div .down_lanmu{
    font-family: SC-Regular;
    font-weight: 400;
    font-size: 0.2rem;
    color: #000000;
    line-height: 1;
    margin-bottom: 0.2rem;
}
.down_div .down_list{
    width: 100%;
    height: auto;
    background: #F7F7F7;
    border-radius: 0.1rem;
    padding: 0.06rem 0.3rem 0.21rem;
}
.down_item{
    border-bottom: 0.01rem solid #E5E5E5;
    padding-top: 0.43rem;
    padding-bottom: 0.33rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.down_item:last-child{
    border: none;
}
.down_item .down_fr{
    width: 0.2rem;
    height: 0.2rem;
    background: url(../img/down_icon1.png) center no-repeat;
    background-size: contain
}
.down_item .down_fr:hover{
    background: url(../img/down_icon2.png) center no-repeat;
    background-size: contain
}
.down_item .down_fl{
    display: flex;
    align-items: center;
    gap: 0.12rem;
    width: calc(100% - 0.5rem);
}
.down_item .down_fl .down_icon{
    width: 0.45rem;
    height: 0.4rem;
}
.down_item .down_fl .down_icon img{
    object-fit: contain;
}
.down_item .down_fl .down_txt .down_key{
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.29rem;
}
.down_item .down_fl .down_txt .down_key span{
    font-family: SC-Light;
    font-weight: 300;
    font-size: 0.14rem;
    color: #606060;
    white-space: nowrap;
    position: relative;
}
.down_item .down_fl .down_txt .down_key span::before{
    content: "";
    position: absolute;
    width: 0.01rem;
    height: 0.1rem;
    background: #606060;
    left: -0.15rem;
    top: 0.05rem;
}
.down_item .down_fl .down_txt .down_key span:first-child::before{
    display: none;
}
.down_item .down_fl .down_txt .down_title{
    font-family: SC-Normal;
    font-weight: 400;
    font-size: 0.18rem;
    color: #606060;
}











@media screen and (max-width: 1024px) {
    .down_body .main{
        flex-wrap: wrap;
        row-gap: 0.6rem;
    }
    .down_fl,
    .down_fr{
        width: 100%;
    }
    .down_fl .down_nav .nav_body span,
    .down_div .down_lanmu{
        font-size: 16px;
    }
    .down_fl .down_nav .nav_body .nav_url,
    .down_fr form .search_input,
    .down_item .down_fl .down_txt .down_title{
        font-size: 14px;
    }
    .down_item .down_fl .down_txt .down_title{
        margin-top: 0.06rem;
    }
    .down_item .down_fl .down_txt .down_key span{
        font-size: 12px;
    }
    .down_item .down_fl .down_txt .down_key span::before{
        top: 0.1rem;
    }
    .down_fl .down_nav .nav_body .nav_url .nav_icon{
        width: 13px;
        height: 13px;
    }
}