.header{
    background: #FFFFFF;
    box-shadow: 0rem 0.03rem 0.06rem 0.01rem rgba(0,0,0,0.16);
}
.header::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0.86rem;
    box-shadow: 0rem 0.03rem 0.06rem 0.01rem rgba(0, 0, 0, 0.16);
    z-index: 9;
    pointer-events: none;
}
.header .logo{
    filter: brightness(1) invert(0);
}
.header .nav-btn{
    filter: brightness(1) invert(0);
}
.header .nav-menu .nav-item>a{
    color: #222430;
}
.header .nav-menu .nav-item.active>a::before,
.header .nav-menu .nav-item:hover>a::before{
    background: #163681 !important;
    width: 100%;
}
.header .nav-btn:hover{
    filter: brightness(1) invert(0) !important;
}









.banner{
    width: 100%;
    height: 7rem;
    display: flex;
    align-items: center;
    justify-content: center;
}




/* 栏目样式 */
.class_name .class_title{
	text-align: center;
	font-family: Sans-Bold;
	font-weight: bold;
	font-size: 0.5rem;
	color: #000000;
	margin-bottom: 0.06rem;
	text-transform: uppercase;
}
.class_name .class_info{
	text-align: center;
	font-family: Sans-Regular;
	font-weight: 400;
	font-size: 0.16rem;
	color: #929292;
}






/* 介绍 */
.Introd{
    padding: 1.15rem 0 1.42rem;
    box-sizing: border-box;
    background: url(../img/about_bg.jpg) no-repeat center center;
    background-size: cover;
}
.Introd .Introd_box{
    display: flex;
    justify-content: space-between;
    margin-top: 0.59rem;
    margin-bottom: 1.42rem;
}
.Introd .Introd_img{
    width: 6.98rem;
    height: 3.94rem;
    border-radius: 0.2rem;
    overflow: hidden;
}
#video-container,
#video-element {
	width: 100%;
	height: 100%;
	position: relative;
    object-fit: cover;
}

#video-poster {
	width: 0.93rem;
    height: 0.93rem;
	position: absolute;
    border-radius: 50%;
    overflow: hidden;
	border: none !important;
	left: 50%;
	top: 50%;
	transform: translate(-50%,-50%);
	z-index: 9;
	pointer-events: none;
}

/* 视频进度条 */
#video-element::-webkit-media-controls-enclosure {
	opacity: 0;
}

#video-element.act::-webkit-media-controls-enclosure {
	opacity: 1;
}


.Introd .Introd_txt{
    width: calc(100% - 8.06rem);
}
.Introd .Introd_txt .Introd_title{
    margin: 0.07rem 0 0.4rem;
    font-family: Sans-Bold;
    font-weight: bold;
    font-size: 0.3rem;
    color: #163681;
}
.Introd .Introd_txt .Introd_info{
    font-family: Sans-Medium;
    font-weight: 500;
    font-size: 0.18rem;
    color: #333333;
    line-height: 1.8888;
    text-align: justify;
} 
.Introd .about_num{
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
	column-gap: 0.4rem;
}
.Introd .about_num .stat-item{
	width: calc(25% - 0.3rem);
	height: 1.6rem;
	background: #FFFFFF;
	box-shadow: 0rem 0rem 0.1rem 0.01rem rgba(0,0,0,0.1);
	border-radius: 0.1rem;
	position: relative;
	padding: 0.18rem 0.3rem;
	box-sizing: border-box;
	cursor: pointer;
	overflow: hidden;
}
.Introd .about_num .stat-item::before{
	content: "";
	position: absolute;
	width: 0;
	height: 0;
	background: #002673;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
	transition: all 0.5s;
	border-radius: 0.1rem;
}
.Introd .about_num .stat-item .stat_icon{
	width: 0.5rem;
	height: 0.5rem;
	background: #002673;
	border-radius: 50%;
	display: flex;
	justify-content: center;
	align-items: center;
	position: absolute;
	top: 0.18rem;
	right: 0.22rem;
}
.Introd .about_num .stat-item .stat_icon img{
	width: 0.3rem;
	object-fit: contain;
	filter: brightness(0) invert(1);
}
.Introd .about_num .stat-item .stat-value,
.Introd .about_num .stat-item .stat-value span{
	font-family: Sans-Bold;
	display: flex;
    column-gap: 0.08rem;
	font-weight: bold;
	font-size: 0.3rem;
	color: #222430;
	position: relative;
}
.Introd .about_num .stat-item .stat-value .scroll_num{
    font-family: Poppins-SemiBold;
    font-weight: 600;
    font-size: 0.6rem;
    color: #222430;
}
.Introd .about_num .stat-item .stat-value .stat-unit{
    padding-top: 0.1rem;
}
.Introd .about_num .stat-item .stat-title{
    font-family: Sans-Medium;
	margin-top: 0.06rem;
	font-weight: 500;
	font-size: 0.16rem;
	color: #929292;
	position: relative;
}
.Introd .about_num .stat-item:hover::before{
	width: 100%;
	height: 100%;
}
.Introd .about_num .stat-item:hover .stat_icon{
	background: #FFFFFF;
}
.Introd .about_num .stat-item:hover .stat_icon img{
	filter: none;
}
.Introd .about_num .stat-item:hover .stat-value,
.Introd .about_num .stat-item:hover .stat-value span{
	color: #fff;
}
.Introd .about_num .stat-item:hover .stat-title{
	color: rgba(255,255,255,0.8);
}








/* 文化 */
.culture{
    width: 100%;
    height: 9.8rem;
    position: relative;
    overflow: hidden;
}
.culture .class_name{
    position: absolute;
    top: 1.04rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
}
.culture .class_name .class_title,
.culture .class_name .class_info{
    color: #fff;
}
.culture .culture_bg{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    background: rgba(0,0,0,.4);
}
.culture .culture_bg .culture_bg_li{
    position: absolute;
    top: 0;
    z-index: -4;
    opacity: 0;
}
.culture .culture_bg .culture_bg_li.act{
    z-index: -1;
    opacity: 1;
}
.culture .culture_box{
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    z-index: 3;
}
.culture .culture_box .culture_item{
    width: 25%;
    height: 100%;
    border-right: 0.01rem solid rgba(255,255,255,.73);
    padding: 5.6rem 0.67rem 0;
    display: flex;
    flex-wrap: wrap;
    align-content: baseline;
    position: relative;
    transition: all 0.5s;
}
.culture .culture_box .culture_item.on{
    padding: 4.5rem 0.67rem 0;
}
.culture .culture_box .culture_item::before{
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient( 180deg, rgba(0,38,115,0) 0%, #002673 100%);
    z-index: -1;
    top: 100%;
    transition: all 0.5s,
}
.culture .culture_box .culture_item.on::before{
    top: 0;
}
.culture .culture_box .culture_item .culture_img{
    width: 0.7rem;
    height: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}
.culture .culture_box .culture_item .culture_title{
    width: 100%;
    font-family: Sans-Bold;
    text-align: center;
    font-weight: bold;
    font-size: 0.26rem;
    color: #FFFFFF;
    margin-top: 0.21rem;
}
.culture .culture_box .culture_item .culture_cont{
    width: 100%;
    text-align: center;
    font-family: Sans-Regular;
    font-weight: 400;
    font-size: 0.16rem;
    color: #FFFFFF;
    line-height: 1.875;
    height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.5s;
    margin-top: 0.3rem;
}
.culture .culture_box .culture_item.on .culture_title{
    margin-top: 0.4rem;
}
.culture .culture_box .culture_item.on .culture_cont{
    opacity: 1;
    transform: translateY(0px);
    height: auto;
}





/* 为什么选择我们 */
.why{
    padding: 1.05rem 0 1.13rem;
    box-sizing: border-box;
    background: #F6F8FB;
}
.why_box{
    margin-top: 0.64rem;
    display: flex;
    background: #FFFFFF;
    border-radius: 0.4rem;
    overflow: hidden;
}
.why_box .why_text{
    width: calc(100% - 7.7rem);
    height: auto;
    padding: 23px 0.52rem 0 0.48rem;
    box-sizing: border-box;
}
.why_box .why_text .why_li{
    padding-top: 0.33rem;
    padding-bottom: 0.34rem;
    border-bottom: 0.01rem solid #D5D5D5;
    cursor: pointer;
}
.why_box .why_text .why_li .why_title{
    padding-left: 0.64rem;
    font-family: Sans-Bold;
    font-weight: bold;
    font-size: 0.3rem;
    color: #222430;
    position: relative;
}
.why_box .why_text .why_li .why_title::before{
    content: '+';
    position: absolute;
    left: 0;
    top: 0.05rem;
    width: 0.36rem;
    height: 0.36rem;
    background: #F2F2F2;
    border-radius: 50%;
    color: #163681;
    text-align: center;
    line-height: 0.36rem;
    font-weight: 500;
    font-family: 'Sans-Medium';
}
.why_box .why_text .why_li .why_info{
    font-family: Sans-Medium;
    font-weight: 500;
    font-size: 0.16rem;
    color: #222430;
    line-height: 1.875;
    padding: 0.07rem 0 0.07rem 0.64rem;
    display: none;
}
.why_box .why_text .why_li.act .why_title{
    color: #163681;
}
.why_box .why_text .why_li.act .why_title::before{
    content: '-';
    font-size: 0.4rem;
    font-family: 'Sans-Regular';
    line-height: 0.3rem;
    font-weight: 100;
}
.why_box .why_text .why_li.act .why_info{
    display: block;
}
.why_box .why_img{
    width: 7.7rem;
    height: 5.5rem;
    border-radius: 0.4rem;
    overflow: hidden;
}





/* 我们的优势 */
.advantage{
    padding: 1.03rem 0 1.2rem;
    box-sizing: border-box;
}
.advantage_box{
    margin-top: 0.47rem;
    display: flex;
    justify-content: space-between;
}
.advantage_box .advantage_item{
    width: 25%;
    padding: 0.38rem 0.32rem 0.3rem;
    box-sizing: border-box;
    position: relative;
}
.advantage_box .advantage_item::before{
    content: "";
    position: absolute;
    width: 0.01rem;
    height: calc(100% - 0.76rem);
    top: 0.44rem;
    right: 0;
    background: #D9D9D9;
}
.advantage_box .advantage_item .advantage_img{
    width: 0.56rem;
    height: 0.56rem;
    margin: 0 auto 0.32rem;
}
.advantage_box .advantage_item .advantage_title{
    width: 100%;
    text-align: center;
    font-family: Sans-Bold;
    font-weight: bold;
    font-size: 0.2rem;
    color: #222430;
    margin-bottom: 0.47rem;
}
.advantage_box .advantage_item .advantage_cont{
    width: 100%;
    text-align: center;
    font-family: Sans-Regular;
    font-weight: 400;
    font-size: 0.16rem;
    color: #929292;
    line-height: 1.625;
}