.a_banner .swiper-slide{
	display: flex;
	align-items: center;
	width: 100vw;
	height: 80vw;
	position: relative;
	overflow: hidden;
	pointer-events:none;
}
.a_banner ._background{
	background-size: cover;
	background-position: center center;
	position: absolute;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
	z-index: 0;
}
.a_banner ._ad{
	color: #fff;
	position: relative;
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
	white-space:nowrap;
}
.a_banner ._ad ._subtitle{
	font-size: 34px;
	font-family: ikaros;
}
.a_banner ._ad ._title{
	font-size: 24px;
	font-weight: 500;
	letter-spacing: 5px;
}
.a_banner ._nav{
	display: flex;
	align-items: flex-start;
	justify-content: center;
	border-bottom: 1px solid #d9d9d9;
}
.a_banner ._nav a{
	font-size: 15px;
	color: #838383;
	text-align: center;
	flex: 1;
	padding: 20px 0 0;
}
.a_banner ._nav a._active{
	color: #52a4da;
	font-weight: 500;
}
.a_banner ._nav a span{
	display: block;
	line-height: 1;
	margin-bottom: 16px;
}
.a_banner ._nav a+a span{
	border-left: 1px solid #d9d9d9;
}
.a_banner ._nav a i{
	display: block;
	width: 0;
	height: 2px;
	background-color: #52a4da;
	margin: 0 auto;
}
.a_banner ._nav a._active i{
	width: 40px;
}
.a_history{
	position: relative;
	margin-top: 10px;
}
.a_history ._nav{
	border-bottom: 1px solid #e5e5e5;
}
.a_history ._nav .swiper-slide{
	width: 170px;
	display: flex;
	align-items: center;
}
.a_history ._nav .swiper-slide:nth-of-type(3){
	width: 320px;
}
.a_history ._nav .swiper-slide:nth-of-type(4){
	width: 110px;
}
.a_history ._nav .swiper-slide ._content{
	display: inline-block;
	text-align: center;
	border-bottom: 2px solid #fff;
	color: #878787;
	padding: 10px 0;
}
.a_history ._nav .swiper-slide._active ._content{
	border-bottom: 2px solid #52a4da;
	color: #444;
}
.a_history ._nav .swiper-slide ._content h4{
	margin-bottom: 4px;
}
.a_history ._nav .swiper-slide ._content p{
	font-size: 12px;
}
.a_history ._nav .swiper-slide ._content span{
	font-family: 'numfont';
	font-size: 16px;
}


.a_history ._nav ._arrow{
	flex: 1;
	text-align: center;
	height: 4px;
	overflow: hidden;
}
.a_history ._nav ._arrow img{
	height: 4px;
	display: block;
	margin: -5px auto 0;
}
.a_history ._nav .swiper-slide:nth-of-type(1) img{
	filter: drop-shadow(#568eb6 0 4px);
}
.a_history ._nav .swiper-slide:nth-of-type(2) img{
	filter: drop-shadow(#7d768f 0 4px);
}
.a_history ._nav .swiper-slide:nth-of-type(3) img{
	filter: drop-shadow(#a55f69 0 4px);
}
.a_history ._nav .swiper-slide:nth-of-type(4) img{
	filter: drop-shadow(#c84a46 0 4px);
}
.a_history ._list{
	margin-top: 20px;
}
.a_history ._list li{
	margin-bottom: 30px;
	position: relative;
}
.a_history ._list li ._year{
	position: absolute;
	left: 0;
	top: 4px;
	bottom: 0;
	width: 15px;
}
.a_history ._list li ._year>i{
	display: block;
	width: 15px;
	height: 15px;
}
.a_history ._list li ._year>span{
	position: absolute;
	left: 50%;
	top: 8px;
	bottom: 0;
	width: 1px;
	background-color: #e5e5e5;
}
.a_history ._list li ._intro{
	position: relative;
	margin-left: 30px;
}
.a_history ._list li ._intro h3{
	margin-bottom: 20px;
	font-size: 18px;
}
.a_history ._list li ._intro ._img{
	margin-bottom: 20px;
}
.a_history ._list li ._intro ._img img{
	width: 100%;
}
.a_history ._list li ._intro ._content{
	
}