.sv1 {
	padding: 18px 0 50px;
	background: #F5F7FA;
	width: 100%;
	overflow: hidden;
}

.sv1 .filter {
	margin-top: 40px;
}

.sv1 dl {
	margin-bottom: 22px;
	flex-wrap: nowrap;
}

.sv1 .filter .ddwrap {
	position: relative;
	font-size: 24px;
	width: 100%;
}

.sv1 .filter dt {
	text-align: right;
	font-size: 22px;
	color: #3C444D;
	font-weight: bold;
	white-space: nowrap;
}

.sv1 .filter dd span {
	padding: 5px 15px;
	display: block;
	font-size: 20px;
	color: #3C444D;
	margin-right: 30px;
	cursor: pointer;
}

.sv1 .filter dd span.on {
	background: #0C9898;
	color: #FFFFFF;
	border-radius: 18px;
}

.sv1 .filter dd .down {
	position: absolute;
	left: 1000vw;
	top: 114%;
	display: flex;
	flex-wrap: wrap;
	opacity: 0;
	transition: opacity 0.6s 0.3s ease;
}

.sv1 .filter dd.on .down {
	left: 0;
	opacity: 1;
}

.sv2 .ev {
	background: #FFFFFF;
	height: 52px;
	padding: 0 60px;
	margin-bottom: 18px;
	transition: all ease .5s;
}

.sv2 .ev span {
	display: block;
	/* text-align: center; */
	font-size: 18px;
	font-weight: 400;
	flex: 1;
}

.sv2 .ev span:nth-of-type(1) {
	flex: 3;
}

.sv2 .ev span:nth-last-of-type(1) {
	text-align: right;
}

.sv2 .ev span b {
	display: inline-block;
	width: 38px;
	height: 38px;
	line-height: 38px;
	background: #0C9898;
	border-radius: 50%;
	text-align: center;
}

.sv2 .ev:hover {
	background: #0C9898;
	color: #FFFFFF;
}

.sv3 .ev {
	width: 23%;
	margin-bottom: 76px;
}

.sv3 .zhanwei {
	width: 23%;
}

.sv3 .ev .pic,
.sv3 .ev .pic img {
	width: 100%;
}

.sv3 .ev .pic {
	position: relative;
}

.sv3 .ev .pic .play {
	position: absolute;
	left: 50%;
	opacity: 0.8;
	top: 50%;
	transform: translate(-50%, -50%);
	cursor: pointer;
	width: 56px;
	height: 56px;
	background: url('/static/img/play.svg') no-repeat center/contain;
}

.sv3 .intr {
	padding: 22px 0 0;
}

.sv3 h3 {
	font-size: 14px;
	color: #7C8081;
	font-weight: normal;
	margin-bottom: 10px;
}

.sv3 h3 img {
	margin: 0 10px 0 0;
}

.sv3 h2 {
	font-size: 20px;
	color: #040404;
}

.sv4 {
	position: fixed;
	top: 0;
	width: 100%;
	height: 100%;
	background: #040404;
	z-index: 500;
	left: 1000vw;
	opacity: 0;
	transition: opacity ease .3s;
}

.sv4 video {
	width: 60%;
	max-height: 80%;
}

.sv4.open {
	left: 0;
	opacity: 1;
}

/* 
*======================================================media===============================================================
*/
@media screen and (max-width:1919px) {}

@media screen and (max-width:1519px) {}

@media screen and (max-width:1366px) {
	.sv2 .ev span {
		font-size: 18px;
	}

	.sv3 .ev,
	.sv3 .zhanwei {
		width: 32%;
	}

	.sv1 .filter dd {
		margin-bottom: 0.5em;
	}

	.sv1 .filter dd span {
		margin-right: 5px;
	}
}

@media screen and (max-width:1250px) {
	.sv2 .ev span {
		width: 100%;
		margin-bottom: 10px;
		text-align: left;
		flex: auto;
	}

	.sv2 .ev {
		height: auto;
		padding: 40px 5% 30px;
	}

	.sv3 h2 {
		font-size: 18px;
	}

	.sv1 {
		padding: 4px 0;
	}
}

@media screen and (max-width:991px) {}

@media screen and (max-width:768px) {

	.sv3 .ev,
	.sv3 .zhanwei {
		width: 48%;
	}

	.sv3 h2 {
		font-size: 14px;
	}

	.sv3 h3 {
		font-size: 12px;
	}

	.sv4 video {
		width: 100%;
	}

	.sv1 dl {
		flex-wrap: wrap;
		margin-bottom: 16px;
	}

	.sv1 .filter .ddwrap {
		width: 100%;
		margin-top: 18px;
	}

	.sv1 .filter dd span {
		margin-right: 0;
		font-size: 12px;
	}

	.sv1 .filter dd .down {
		top: 100%;
	}

	.sv2 .ev {
		position: relative;
	}

	.sv2 .ev b {
		position: absolute;
		right: 5%;
		bottom: 5%;
		width: 25%;
		z-index: 1;
		opacity: 0.3;
	}

	.tankuang {
		width: 80% !important;
		z-index: 50;
	}

	.sv2 .ev {
		padding: 20px 5% 10px;
	}


	.sv1 .filter dd {
		width: 50%;
	}



	.sv1 .filter dt {
		width: 5em;
		font-size: 14px;
		text-align: left;
	}
}

@media screen and (max-width:480px) {
	.sv1 .filter dd.on .down {
		background: #fff;
		padding: 10px 0;
		border-radius: 3px;
	}

	.sv1 .filter dd {
		width: 50%;
	}

	.sv3 .ev,
	.sv3 .zhanwei {
		width: 100%;
	}
}