* {
	margin: 0;
	padding: 0;
}

/*
1920/100 = 19.2   1vw = 19.2px
*/
html {
	position: relative;
}

body {
	background: #ffffff;
	font-family: "微软雅黑", sans-serif;
	font-size: 0.73vw;
	color: #000;
}

.contact {
	height: 5vw;
	position: absolute;
	right: 10vw;
	text-decoration: none;
	line-height: 5vw;
	color: #000000;
	font-size: 1vw;
}

.banner {
	width: 100%;
	height: auto;
	padding-top: 4.68vw;
}

@media screen and (max-width: 768px) {
	.banner {
		width: 100%;
		height: auto;
		padding-top: 1rem;
	}

	.ad-chunk ul li {
		width: 100%;
		float: left;
		margin-bottom: 20px;
		list-style: none;
	}

	.title p:nth-of-type(1) {
		font-size: 5vw;
		/*45px*/
		line-height: 5vw;
		/*78px*/
	}

	.title p:nth-of-type(2) {
		font-size: 3vw;
		/*36px*/
		color: #415285;
		margin-top: 1vw;
		/* line-height: 2vw; */
		/*62px*/
	}

	.ad-chunk-c {
		width: 100%;
		height: auto;
		overflow: hidden;
		clear: both;
		margin-bottom: 10vw;
	}

	.one-txt {
		width: 100%;
		height: auto;
		font-size: 3vw;
		text-indent: 2em;
		margin-top: 1vw;
	}

	.one-img {
		width: 100%;
		height: 38vw;
	}

	.ad-chunk-tit {
		width: 90%;
		height: 39.45vw;
		margin: 0 auto;
		overflow: hidden;
		position: relative;
	}

	.case-chunk li {
		width: 100%;
		height: auto;
		margin-left: 2%;
		margin-top: 1.5vw;
		/* background: #0077AA; */
		list-style: none;
		float: left;
	}

	.chunk-tit,
	.chunk-bot {
		width: 100%;
		/* height: 2.5vw;
		line-height: 2.5vw; */
		background: #efefef;
		font-size: 4vw;
		color: #999;
		padding: 2.5vw;
	}
}

@media screen and (min-width: 768px) {
	.ad-chunk ul li {
		width: 33%;
		float: left;
		list-style: none;
	}

	.title p:nth-of-type(1) {
		font-size: 3vw;
		/*45px*/
		line-height: 5vw;
		/*78px*/
	}

	.title p:nth-of-type(2) {
		font-size: 1.2vw;
		/*36px*/
		color: #415285;
		/* line-height: 2vw; */
		/*62px*/
	}

	.li-chunk {
		width: 80%;
		height: auto;
		overflow: hidden;
		box-shadow: 0 0 0.5vw #d6d6d6;
	}

	.ad-chunk-c {
		width: 100%;
		height: 10vw;
		clear: both;
		margin-bottom: 10vw;
	}

	.one-txt {
		width: 40vw;
		height: 10vw;
		font-size: 1.3vw;
		text-indent: 2em;
	}

	.one-img {
		width: 26vw;
		height: 14vw;
	}

	.one-img1 {
		float: left;
	}

	.one-txt1 {
		float: right;
	}

	.one-img2 {
		float: right;
	}

	.one-txt2 {
		float: left;
	}

	.ad-chunk-tit {
		width: 100%;
		height: 11.45vw;
		margin: 0 auto;
		overflow: hidden;
		position: relative;
	}

	.case-chunk li {
		width: 22.5%;
		height: 20vw;
		margin-left: 2%;
		margin-top: 1.5vw;
		/* background: #0077AA; */
		list-style: none;
		float: left;
	}

	.chunk-tit,
	.chunk-bot {
		width: 100%;
		height: 2.5vw;
		line-height: 2.5vw;
		background: #efefef;
		font-size: 0.72vw;
		color: #999;
	}
}

.banner img {
	width: 100%;
	height: 100%;
}

/*优势模块*/
.advantage {
	width: 70%;
	height: auto;
	margin: 4.2vw auto 1vw auto;
	overflow: hidden;
}

.title {
	width: 100%;
}

.title p {
	width: 100%;
	text-align: center;
}



.ad-chunk {
	width: 100%;
	height: auto;
	overflow: hidden;
	margin-top: 2vw;
	/*534px*/
	position: relative;
}

.ad-chunk ul {
	width: 100%;
}


.ad-chunk ul li:hover>.li-chunk>.ad-chunk-tit>.model {
	top: 0;
}

.ad-chunk ul li:nth-of-type(1),
.ad-chunk ul li:nth-of-type(2) {
	/* border-right: 0.052vw solid #f2f2f2; */

}

.model {
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, .5);
	position: absolute;
	top: -100%;
	left: 0;
	z-index: 2;
	color: #fff;
	transition: all .5s;
	display: flex;
	align-items: center;
}

.model p {
	padding: 2vw;
	font-size: 0.8vw;
}

.ad-chunk-tit1 {
	background: url(https://jishukeji.oss-cn-beijing.aliyuncs.com/H5/pr2.png) no-repeat;
	background-size: 100% 100%;
}

.ad-chunk-tit2 {
	background: url(https://jishukeji.oss-cn-beijing.aliyuncs.com/H5/p-ad1.png) no-repeat;
	background-size: 100% 100%;
}

.ad-chunk-tit3 {
	background: url(https://jishukeji.oss-cn-beijing.aliyuncs.com/H5/pr3.png) no-repeat;
	background-size: 100% 100%;
}

.ad-chunk-con {
	width: 80%;
	margin: 1.5625vw auto;
	font-size: 0.9375vw;
}

/*服务特色*/
.banner2 {
	width: 100%;
	height: 20vw;
	background: url(https://jishukeji.oss-cn-beijing.aliyuncs.com/H5/banner2.png) no-repeat;
	background-size: 100% 100%;
}

/*案例*/
.case {
	width: 80%;
	margin: 3.2vw auto;
	/*padding-bottom: 13.54vw;*/
	overflow: hidden;
}

.case-chunk {
	width: 100%;
	overflow: hidden;
	margin: 2vw auto;
}

.case-chunk ul {
	width: 100%;
}

.case-img {
	width: 100%;
	height: auto;
	overflow: hidden;
	/* background: #000000; */
}

.case-img img {
	width: 100%;
	cursor: pointer;
	transition: all 0.6s;
	vertical-align: bottom;
}

.case-img img:hover {
	transform: scale(1.2);
}