.banner_box .title{
    color: #343434;
    font-weight: bold;
    font-size: 48px;

}
.industrylist {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    margin: 60px auto 160px;
}
.industrylist-nav {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    left: 0;
    width: 352px;
    background: #f5f7fae6;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;

}
.industrylist-nav .nav-item {

    position: relative;
    color: var(--link-color);
    transition: all .3s ease-out;

}
.industrylist-nav .nav-item b {
    display: block;
    position: relative;
    padding: 20px 36px 20px 40px;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    overflow: hidden;
    font-size: 20px;
    font-weight: 600;
    cursor: pointer;
}
.industrylist-nav .nav-item.on b {
    background: #FFFFFF;
    color: var(--bs-link-color);
}
.industrylist-nav .nav-item.on{
    position: relative;
}
.industrylist-nav .nav-item.on:before{
    position: absolute;
    left: 0;
    content: '';
    width: 3px;
    background-color: var(--bs-link-color);
    height: 50%;
    display: block;
    top: 50%;
    z-index: 9;
    transform: translateY(-50%);
}

.industrylist-nav .nav-item:hover{
    background-color: #ffffff;
}
.industrylist-center {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
}
.industrylist-center .pro-level2 .level2-tit {
    font-size: 20px;
    font-weight: 600;
    line-height: 26px;
    position: relative;
    padding-left: 10px;
    display: block;
    margin-bottom: 30px;

}
.industrylist-center .pro-level2 .level2-tit span{
    font-size: 16px;    margin-left: 10px;
}
.industrylist-center .pro-level2 .level2-tit .level2-tit-desc{
    font-size: 14px;
    color: #6B6B6B;
    line-height: 20px;
    font-weight: normal;
    margin-top: 8px;

}
.industrylist-center .pro-level2:first-child{
    padding-top: 0;
}
.industrylist-center .pro-level2 {
    padding-top: 16px;
    margin-bottom: 8px;
    margin-left: 10px;
}



.pro-level3 {
    font-size: 14px;
    display: inline-block;
    vertical-align: top;
    width: 32%;
    min-height: 70px;
    margin-bottom: 15px;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    padding-left: 10px;

}
.pro-level3 .level3-item {
    display: block;
    background-color:  #f5f7fae6;
    min-height: 74px;
    padding: 20px 14px;
    font-size: 16px;
    transition: all .3s ease-out;
}
.pro-level3 .level3-item:hover{
    color: #FFFFFF;
    background-color:var(--bs-link-color);
    box-shadow: 0 6px 16px 2px rgba(5, 12, 20, .08);
}
.pro-level3 .level3-item em{
    font-style: normal;
}
.pro-level3 .level3-item .item-center .tit {
    font-size: 16px;
    font-weight: 600;
    height: 26px;
    line-height: 26px;
    overflow: hidden;
}
@media (max-width: 768px){
    .industrylist{
        margin: 40px auto 80px;
    }
   .industrylist-left {
        display: none;
    }
    .industrylist-center {
        background: #fff;
        padding: 16px;
    }
    .industrylist-center .pro-level2 {
        border-bottom: 1px solid #e5e5e5;
        margin-bottom: 16px;
        padding-top: 8px;
        padding-bottom: 8px;
        margin-left: 0;
    }
    .industrylist-center .pro-level2:last-child{
        border-bottom: none;
    }

    .pro-level3 {
        font-size: 14px;
        width: 49%;
        min-height: 0;
        margin-bottom: 10px;
        padding-left: 0px;

    }
    .pro-level3 .level3-item{
        padding: 8px 10px;
        font-size: 12px;
        min-height: 46px;
    }
    .industrylist-center .pro-level2 .level2-tit span{
        font-size: 14px;
        margin-left: 10px;
        vertical-align: text-bottom;
    }
    .banner_box .title{
        font-size: 24px;
    }
    .industrylist-center .pro-level2 .level2-tit{
        font-size: 18px;
        padding-left: 0;
    }
}
@media (min-width: 1200px){

    .banner_box .title{
        font-size: 38px;
    }
}
@media (min-width: 1400px){

    .banner_box .title{
        font-size: 46px;
    }
}