.a_banner{
	height: 100vh;
	position: relative;
}
.a_banner ._banner{
	height: 100%;
	position: relative;
}
.a_banner .swiper-wrapper{
	height: 100%;
}
.a_banner .swiper-slide{
	display: flex;
	align-items: center;
	height: 100%;
	position: relative;
	overflow: hidden;
	pointer-events:none;
}
.a_banner ._background{
	background-size: cover;
	background-position: center 0;
	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: 55px;
	font-family: ikaros;
	margin-bottom: 4px;
}
.a_banner ._ad ._title{
	font-size: 55px;
	font-weight: 600;
	letter-spacing: 10px;
	margin-bottom: 60px;
}
.a_banner ._nav{
	position: absolute;
	left: 0;
	right: 0;
	bottom: 2vh;
	z-index: 10;
	display: flex;
	align-items: flex-start;
	justify-content: center;
}
.a_banner ._nav a{
	font-size: 17px;
	color: #fff;
	text-align: center;
}
.a_banner ._nav a span{
	display: block;
	padding: 0 32px;
	line-height: 1;
	margin-bottom: 12px;
}
.a_banner ._nav ._vertical{
	height: 17px;
	width: 1;
	border-left: 1px solid rgba(255,255,255,.3);
}
.a_banner ._nav a i{
	display: block;
	width: 0;
	height: 1px;
	background-color: #fff;
	margin: 0 auto;
	transition: width .4s;
}
.a_banner ._nav a:hover i,.a_banner ._nav a._active i{
	width: 58%;
}

.a_banner_2{
	position: relative;
	height: 100vh;
}
.a_banner_2 ._background{
	background-color: #fcfcfc;
	position: absolute;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
	z-index: 0;
	display: flex;
	align-items: center;
}
.a_banner_2 ._background ._img{
	width: 30%;
}
.a_banner_2 ._background img{
	width: 100%;
}
.a_banner_2 .s_window_2{
	height: 100vh;
	display: flex;
	align-items: center;
}
.a_banner_2 ._ul{
	margin-left: 38%;
	margin-top: 100px;
}
.a_banner_2 ._ul h2{
	font-size: 42px;
	color: #2ca6df;
	margin-bottom: 4vh;
}
.a_banner_2 ._ul ._subtitle{
	font-size: 16px;
	font-weight: 500;
	line-height: 38px;
	margin-bottom: 3.5vh;
}
.a_banner_2 ._ul ._subtitle p{
	text-indent: 2em;
}
.a_banner_2 ._ul ._content{
	line-height: 32px;
	margin-bottom: 5vh;
}
.a_banner_2 ._ul ._content h3{
	margin-bottom: 3.5vh;
	line-height: 38px;
}
.a_banner_2 ._ul ._content p{
	margin-bottom: 3.5vh;
	line-height: 32px;
}
.a_banner_2 ._ul ._data{
	display: flex;
	justify-content: space-between;
	align-items: center;
}
.a_banner_2 ._ul ._data ._number{
	font-size: 22px;
}
.a_banner_2 ._ul ._data ._number span{
	font-size: 100px;
	font-family: 'numfont';
}


.a_banner_3{
	position: relative;
}
.a_banner_3 ._background{
	background-size: auto 100% ;
	background-position: center 0;
	position: absolute;
	background-repeat: no-repeat;
	background-color: #16181b;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
	z-index: 0;
}
.a_banner_3 ._ul{
	height: 100vh;
	display: flex;
	flex-flow: column;
	justify-content: center;
	align-items: center;
}
.a_banner_3 ._ul ._one{
	display: flex;
	justify-content: center;
	align-items: center;
	margin-top: 100px;
}
.a_banner_3 ._ul ._two{
	display: flex;
	justify-content: space-between;
	align-items: center;
	width: 54%;
	margin: 100px auto 0;
}
.a_banner_3 ._ul ._two li{
	width: 33.33%;
}
.a_banner_3 ._ul ._three{
	display: flex;
	justify-content: space-between;
	align-items: center;
	width: 86%;
	margin: 0 auto;
}
.a_banner_3 ._ul li{
	text-align: center;
	color: #fff;
	font-size: 20px;
	margin-bottom: 6vh;
}
.a_banner_3 ._ul img{
	width: 36px;
	margin: 0 auto 8px;
}
.a_banner_3 ._ul ._number{
	line-height: 100px;
	height: 100px;
}
.a_banner_3 ._ul ._number span{
	font-family: 'numfont';
	font-size: 90px;
	display: inline-block;
}

.a_banner_4{
	height: 100vh;
	position: relative;
}
.a_banner_4 #myVideo{
	position: absolute;
	right: 0;
	bottom: 0;
	top:0;
	width: 100%;
	height: 100%;
	background-size: 100% 100%;
	background-color: #000;
	background-image: url(../../img/video.jpg);
	background-position: center center;
	background-size: contain;
	object-fit: cover;
	z-index:1;
}
.a_banner_4 ._mask{
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: 10;
	display: flex;
	align-items: center;
}
.a_banner_4 ._mask a{
	display: block;
	position: absolute;
	left: 50%;
	top: 50%;
	z-index: 11;
}
.a_banner_4 ._mask a .s_spot{
	display: block;
	width: 30px;
	height: 30px;
	position: absolute;
	left: -40px;
	top: 6px;
}
.a_banner_4 ._mask a .s_spot::after{
	position: absolute;
	display: block;
	content:" ";
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background-color: #fff;
	z-index: 1;
	left: 13px;
	top: 13px;
}
.a_banner_4 ._mask a._right .s_spot{
	right: -40px;
	left: auto;
	top: 6px;
}
.a_banner_4 ._mask a ._title{
	display: block;
	color: #fff;
	background-color: rgba(44,166,223,.8);
	border-radius: 20px 20px 20px 0;
	padding: 6px 14px;
	font-size: 16px;
	transition: transform .6s,background-color .6s;
}
.a_banner_4 ._mask a:hover ._title{
	background-color: rgba(44,166,223,1);
	transform:translateX(5px);
	-webkit-transform:translateX(5px);
}
.a_banner_4 ._mask a._right ._title{
	border-radius: 20px 20px 0 20px;
}
.a_banner_4 ._mask a:hover._right ._title{
	transform:translateX(-5px);
	-webkit-transform:translateX(-5px);
}