.navToTop{
    position: fixed;
    top:0;
    z-index: 1000;
    width: 100%;
}
.nav{
    background-color: #fff;
    box-shadow: 0 2px 4px 0 rgb(0 0 0 / 20%);
    width: 100%;
    position: relative;
    z-index: 100;
    height: 150px;
}
.nav_main{
    display: block;
    max-width: 1500px;
    min-width: 980px;
    height: 100%;
    margin: 0 auto;
}
.nav_top{
    width: 100%;
    height: 75px;
}
.nav_top_left{
    display: inline-block;
    width: 16%;
    height: 50px;
    line-height: 45px;
    vertical-align: bottom;
    margin-top: 20px;
}
.nav_top_right{
    display: inline-block;
    height: 50px;
    line-height: 50px;
    vertical-align: bottom;
    margin-top: 20px;
    text-align: right;
    width: 84%;
}
.ntr_lk{
    display: inline-block;
    width: 65%;
    text-align: left;
}
.ntr_rk{
    display: inline-block;
    width: 35%;
    text-align: right;
}
.logo{
    display: inline-block;
    width: 250px;
}
.logo img{
    width: 150px;
    height: 50px;
}
.nav_top_article
{
    display: inline-block;
}
.article_item{
    display: inline-block;
    font-size: 14px;
    margin-right: 15px;
    position: relative;
    z-index: 100;
    border: 1px solid white;
}
.item_text{
    width: 100%;
    height: 100%;
    background-color: white;
    display: block;
    padding: 0 15px;
}
.item_text_o{
    width: 100%;
    height: 100%;
    display: block;
    padding: 0 15px;
}
.icon-r{
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAECAYAAABcDxXOAAAAAXNSR0IArs4c6QAAAGVJREFUCB1j9Pf31/r79+/vLVu23GZAAz4+PqrMzMysTIaGhrf+///v7+3tnYysBsQHiYPkGWESvr6+pv/+/YsESixiZGSMY2JiWr558+bTIHm4IhAHqJALSEUB8TKggm8gMRAAAAWdJheHWfylAAAAAElFTkSuQmCC) no-repeat;
    width: 13px;
    height: 6px;
    display: inline-block;
    margin-left: 5px;
    position: relative;
    top: -1px;
}
.article_item:hover{
    color: rgb(255,131,45);
    cursor:pointer;
    border: 1px solid #e7e7e7;
    border-bottom: 0px;
}
.article_item_detail
{
    width: 376px;
    position: absolute;
    background-color: #fff;
    top: 45px;
    left: 0;
    z-index: -1;
    box-shadow: 0 0 2px 0 rgb(0 0 0 / 30%);
    padding-bottom: 15px;
    transition: all .5s;

}
.article_item_detail ul{
    padding-left: 17px;
    padding-right: 70px;
    vertical-align: text-top;
    display: inline-block;
    list-style: none;
}
.article_item_detail ul li {
    margin: 0;
    padding: 0;
    display: list-item;
    text-align: -webkit-match-parent;
    height: 40px;
}
.article_item_detail ul li:first-child{
    font-size: 16px;
    font-weight: bold;
}
.article_item_detail ul li a{
    color: #4a4a4a;
    display: block;
    text-align: left;
}
.article_item_detail ul li a:hover{
    color: rgb(255,131,45);
}
.ntr_gwc{
    font-size: 14px;
    display: inline-block;
    margin: 0px 5px;
}
.kf{
    position: relative;
}
.kf:hover{
    cursor: pointer;
}
.kf:hover .kf_kuang{
    display: block;
}
.kf_kuang{
    position: absolute;
    top: 40px;
    left: 0;
    height: 70px;
    width: 150px;
    background-color: #fff;
    box-shadow: 0 0 2px 0 rgb(0 0 0 / 30%);
    display: none;
}
.kf_kuang span
{
    display: block;
    width: 100%;
}
.kfspan_top
{
    height: 30px;
    line-height: 30px;
    font-size: 20px;
    font-weight: bold;
    color: rgb(255,131,45);
    text-align: center;
    margin-top: 10px;
}
.kfspan_bottom
{
    height: 30px;
    line-height: 30px;
    font-size: 12px;
    text-align: center;
}

.fwpt{
    position: relative;
}
.fwpt:hover{
    cursor: pointer;
}
.fwpt:hover .fwpt_kuang{
    display: block;
}
.fwpt_kuang{
    position: absolute;
    top: 40px;
    left: 0;
    height: 150px;
    width: 150px;
    background-color: #fff;
    box-shadow: 0 0 2px 0 rgb(0 0 0 / 30%);
    display: none;
    text-align: center;
    padding: 10px;
}

.ntr_gwc a:hover{
    color: rgb(255,131,45);
}
.ng_active{
    color: rgb(255,131,45);
}
.ntr_gwc img{
    height: 20px;
    width: 20px;
    vertical-align: text-bottom;
}
.nav_bottom{
    margin-top: 10px;
}
.nb_left{
    display: inline-block;
    width: 16%;
    vertical-align: bottom;
    font-size: 16px;
    position: relative;
    z-index: 200;
}
.nbl_kuang{
    padding: 5px 7px;
    width: 200px;
    cursor: pointer;
    background-color: white;
}

.nbl-cate{
    top: -4px;
    box-shadow: 0 0 2px 0 rgb(0 0 0 / 30%);
    position: absolute;
    z-index: 100;
}
.nbl-cate_right{
    width: 700px;
    min-height: 275px;
    box-shadow: 0 0 2px 0 rgb(0 0 0 / 30%);
    position: absolute;
    left: 200px;
    top: 56px;
    background-color: white;
    padding: 10px 20px;
}
.sub{

}
.sub_item{
    margin: 5px 0px;
}
.second_name{
    display: inline-block;
    flex-direction: row;
    width: 100px;
    text-align: right;
    vertical-align: top;
}
.second_name span{
    font-size: 14px;
    font-weight: 400;
}
.second_name span:hover{
    cursor: pointer;
    color: rgb(255,131,45);
}
.second_name img{
    width: 8px;
    transform: rotate(
            -90deg
    );
    -ms-transform: rotate(-90deg);
    -moz-transform: rotate(-90deg);
    -webkit-transform: rotate(
            -90deg
    );
    -o-transform: rotate(-90deg);
    position: relative;
    top: 0px;
}
.third_name{
    display: inline-block;
    flex-direction: row;
    vertical-align: top;
    width: 500px;
}
.third_name span{
    display: inline-block;
    border-left: 2px solid #ccc;
    font-size: 12px;
    padding: 0px 15px;
}
.third_name span:hover{
    cursor: pointer;
    color: rgb(255,131,45);
}
.c-top{
    width: 200px;
    height: 56px;
}
.c-body ul{
    list-style: none;
    padding: 0;
    margin: 0;
}
.c-body ul li:last-child{
    border-bottom: 0;
}
.c-body{
    background-color: white;
}
.c-list{
    padding: 10px 10px;
    border-bottom: 2px solid #ededed;
}
.c-list:hover{
    color:rgb(255,131,45);
    cursor: pointer;
}
.c-list:hover b{
    background-color:rgb(255,131,45);
}
.b_active{
    background-color:rgb(255,131,45);
}
.c-list.active{
    color:rgb(255,131,45);
}
.c-list_b{
    display: inline-block;
    height: 3px;
    width: 10px;
    background-color: #ededed;
    vertical-align: middle;
    margin-right: 4px;
}

.c-list_sp{
    font-size: 16px;
}
.nb_middle{
    display: inline-block;
    height: 50px;
    vertical-align: bottom;
    padding: 4px 6px;
    width: 50%;
    position: relative;
    z-index: 1000;
}
.nb_right{
    display: inline-block;
    width: 450px;
    height: 50px;
    vertical-align: bottom;
}

.nb_left_img{
    width: 16px;
    height: 14px;
    vertical-align: middle;
    margin-right: 10px;
}
.nb_left_span{
    font-size: 18px;
    color: #000;
    vertical-align: middle;
}
.nbm_search{

    overflow: hidden;
    display: -ms-flexbox;
    display: flex;
    height: 40px;
    background-color: #ff832d;
    text-align: left;
}
.nbm_search input{
    height: 36px;
    border: none;
    margin-top: 2px;
    padding-left: 10px;
    margin-left: 2px;
    outline: none;
    float: left;
    -ms-flex: 1;
    flex: 1;
}
.search-btn{
    float: right;
    text-align: center;
    height: 40px;
    line-height: 40px;
    cursor: pointer;
    -ms-flex: 0 0 137px;
    flex: 0 0 137px;
}
.search-btn img{
    width: 20px;
    vertical-align: middle;
    margin-right: 10px;
}
.search-btn span{
    font-size: 16px;
    color: #fff;
    vertical-align: middle;
}