/** 头部 */
body{
    background: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    margin: 0;
    height: auto;
}
#header{
    position: sticky;
    top: 0;
    z-index: 111;
    background-color: #fff;
}
.top {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 5px 30px;
}


.top_img {
    height: 44px;
    width: 303px;
}

.nav {
    display: flex;
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.nav_li,.classification{
    padding: 0 20px;
    height: 43px;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.classification:hover>.nav_li_span:after,.current>.nav_li_span:after{
    opacity: 1;
    background-color: #05c713;
}
.nav_li:hover a {
    color: #1060CF;
}
.nav_li_span{
    position: relative;
    display: inline-block;
    height: 100%;
    line-height: 43px;
    font-size: 18px;
    font-weight: 500;
}
.nav_li_span:after {
    opacity: 0;
    content: "";
    display: block;
    position: absolute;
    background-color: #fff;
    height: 2px;
    width: 100%;
    bottom: 0;
    left: 0;
    -webkit-transition: opacity .2s;
    -moz-transition: opacity .2s;
    transition: opacity .2s;
}
.nav a {
    color: #000;
    text-decoration: none;
}

.banner {
    position: relative;
    width: 100%;
}
.banner img{
    width: 100%;
}
.banner_text{
    color: #fff;
    position: absolute;
    left: 50%;
    bottom: 50%;
    width: 600px;
    margin: auto;
    transform: translate(-50%, 0);
    -webkit-transform: translate(-50%, 0);
    -moz-transform: translate(-50%, 0);
    -ms-transform: translate(-50%, 0);
}
.banner_text_span{
    font-weight: bold;
    font-size: 38px;
    text-align: center!important;
}
.banner_text_p{
    margin-top: 30px;
    font-size: 18px;
    text-align: center!important;
}
.nav_box{
    display: flex;
    justify-content: center;
}
/** 底部 */
.footer_bottom{
    background-color: #353535;
}
.footer_enterprise{
    width: 75%;
    margin: auto;
}
.footer_bottom_mame{
    color: #fff;
    padding: 30px 0;
}
.footer_bottom_data{
    display: flex;
    justify-content: space-between;
    padding: 20px 0;
}
.footer_bottom_data_main{
    display: flex;
    align-items: center;
}
.footer_bottom_data_img{
    height: 100px;
    display: flex;
    align-items: center;
    border-right: 1px solid #545454;
    padding-right: 15px;
    margin-right: 15px;
}
.footer_bottom_data_img img{
    height: 77px;
}
.footer_bottom_data_text{
    color: #fff;
}
.footer_bottom_data_text>div{
    margin: 5px 0;
}
.copyright{
    background-color: #2e2e2e;
    padding: 7px;
    text-align: center;
    color: #888 !important;
    line-height: 1.5;
    font-size: 10px;
}