.about1 {
	width: 100%;
	height: 1110px;
	overflow: hidden;
	padding: 120px 0 80px;
	position: relative;
}
.about1:after {
	content: '';
	display: block;
	width: calc(50% + 480px);
	width: -moz-calc(50% + 480px);
	width: -webkit-calc(50% + 480px);
	height: 820px;
	overflow: hidden;
	background-color: #f7f7f7;
	position: absolute;
	top: 295px;
	left: 50%;
	margin-left: -960px;
}
.about1 .about1-left {
	width: 820px;
	overflow: hidden;
	position: relative;
	left: 50%;
	margin-left: -820px;
	z-index: 1;
}
.about1-left .about1-title {
	width: 100%;
	height: 105px;
	overflow: hidden;
	background-image: url(../images/about1-1.png);
	background-repeat: no-repeat;
	background-position: 45px 0px;
	position: relative;
}
.about1-title h2 {
	font-size: 48px;
	line-height: 105px;
	padding-left: 45px;
	background-image: url(../images/lsj.png);
	background-repeat: no-repeat;
	background-position: 0px 50%;
}
.about1-left .about1-txt {
	width: 775px;
	text-align: justify;
	padding: 0 10px 0 0;
	overflow: hidden;
	font-size: 14px;
	line-height: 28px;
	color: #888787;
	margin: 160px 0 0 45px;
}
.about1-txt h3 {
	font-size: 30px;
	color: #7a7a7a;
	line-height: 40px;
	font-weight: lighter;
}
.about1-txt img {
	margin: 10px 0 30px;
}
.about1-txt p {
	margin: 0 0 12px;
}
.about1 .about1-right {
	width: 50%;
	overflow: hidden;
	position: absolute;
	z-index: 2;
	left: 50%;
	top: 120px;
	margin-left: 63px;
}
@media only screen and (max-width: 991px) {
	.about1 {
		height: 3000px;
		padding: 90px 0 0;
	}
	.about1:after {
		width: 100%;
		height: 100%;
		top: 225px;
		left: 0;
		margin-left: 0px;
	}
	.about1-left .about1-title {
	    background-size: 585px;
	}
	.about1 .about1-left {
	    width: 635px;
	    margin-left: -340px;
	    z-index: 3;
	}
	.about1-left .about1-txt {
		width: 590px;
		margin: 130px 0 0 45px;
		padding: 0;
		color: #888787;
	    font-size: 26px;
	    line-height: 48px;
	}
	.about1-txt h3 {
		color: #7a7a7a;
		font-size: 42px;
		line-height: 50px;
		margin: 0 0 48px;
	}
	.about1 .about1-right {
	    width: 100%;
	    height: 1005px;
	    left: auto;
	    right: 0px;
	    top: auto;
	    margin-left: 0;
	    bottom: 0px;
	    background-color: #ffffff;
	    text-align: right;
	}
	.about1 .about1-right img {
		width: 673px;
	}
	.about1-txt img,.about1 .about1-right img:nth-of-type(1) {
		display: none;
	}
	.about3-list .about3-txt
	{
	    padding: 18px 0px;
	}
}
@media only screen and (max-width: 700px) {
	.about1 {
		height: 1445px;
		padding: 40px 0 0;
	}
	.about1:after {
		top: 110px;
	}
	.about1-left .about1-title {
		height: 55px;
	    background-size: 90% auto;
	    background-position: 20px 0px;
	}
	.about1-title h2 {
	    font-size: 28px;
	    line-height: 55px;
	    padding-left: 20px;
	    background-size: 12px auto;
	}
	.about1 .about1-left {
	    width: 345px;
	    margin-left: -182.5px;
	}
	.about1-left .about1-txt {
		width: 325px;
		margin: 50px 0 0 20px;
	    font-size: 14px;
	    line-height: 24px;
	}
	.about1-txt h3 {
		font-size: 21px;
		line-height: 25px;
		margin: 0 0 24px;
	}
	.about1 .about1-right {
	    height: 485px;
	}
	.about1 .about1-right img {
		width: 345px;
	}
}
@media only screen and (min-width: 992px) {
	.about1 {
		height: 760px;
		padding: 90px 0 80px;
	}
	.about1:after {
		width: calc(50% + 240px);
		width: -moz-calc(50% + 240px);
		width: -webkit-calc(50% + 240px);
		height: 820px;
		top: 200px;
		margin-left: -600px;
	}
	.about1 .about1-left {
		width: 515px;
		margin-left: -515px;
	}
	.about1-left .about1-title {
		height: 70px;
		background-position: 30px 0px;
		background-size: 400px auto;
	}
	.about1-title h2 {
		font-size: 36px;
		line-height: 70px;
		padding-left: 30px;
		background-size: 18px auto;
	}
	.about1-left .about1-txt {
		width: 485px;
		padding: 0 5px 0 0;
	    font-size: 12px;
	    line-height: 20px;
		margin: 80px 0 0 30px;
	}
	.about1-txt img {
	    margin: 7px 0 24px;
	}
	.about1 .about1-right {
	    top: 90px;
	    margin-left: 42px;
	}
	.about1 .about1-right img {
		width: 558px;
	}
	.about1 .about1-right img:nth-of-type(2) {
		display: none;
	}
}
@media only screen and (min-width: 1200px) {
	.about1 {
		height: 1030px;
		padding: 120px 0 80px;
	}
	.about1:after {
		width: calc(50% + 480px);
		width: -moz-calc(50% + 480px);
		width: -webkit-calc(50% + 480px);
		height: 820px;
		top: 295px;
		margin-left: -960px;
	}
	.about1 .about1-left {
		width: 650px;
		margin-left: -620px;
	}
	.about1-left .about1-title {
		height: 105px;
		background-position: 45px 0px;
		background-size: 604px auto;
	}
	.about1-title h2 {
		font-size: 48px;
		line-height: 105px;
		padding-left: 45px;
		background-size: 23px auto;
	}
	.about1-left .about1-txt {
		width: 605px;
		padding: 0 10px 0 0;
	    font-size: 14px;
	    line-height: 28px;
		margin: 125px 0 0 45px;
	}
	.about1-txt img {
	    margin: 10px 0 30px;
	}
	.about1 .about1-right {
	    top: 120px;
	    margin-left: 63px;
	}
	.about1 .about1-right img {
		width: 762px;
	}
}
@media only screen and (min-width: 1650px) {
	.about1 {
		height: 1110px;
	}
	.about1 .about1-left {
		width: 820px;
		margin-left: -820px;
	}
	.about1-left .about1-txt {
		width: 775px;
		margin: 160px 0 0 45px;
	}
	.about1 .about1-right img {
		width: 897px;
	}
}
@media only screen and (min-width: 1921px) {
	.about1:after {
		margin-left: 0px;
		left: 0px;
	}
	.about1 .about1-right img {
		width: 100%;
	}
}


.about3 {
	width: 100%;
	overflow: hidden;
	padding: 0px 0 105px;
	background: url(../images/about3.jpg) no-repeat top center;
	display: flex;
    justify-content: center;
}
.about3 h2 {
	line-height: 123px;
	color: #333333;
	font-size: 48px;
	text-align: center;
	background: url(../images/about3.png) no-repeat top center;
}
.about3 .about3-list {
	width: 100%;
	height: 335px;
	margin: 33px 0 0;
}
.about3-list a {
	display: block;
	width: 350px;
	height: 335px;
	overflow: hidden;
	background-color: #FFFFFF;
	float: left;
	box-shadow: 0px 0px 23px 1px rgba(33,27,24,0.16);
	margin-right: 50px;
}
.about3-list a:last-of-type {
	margin-right: 0px;
}
.about3-list .about3-img {
	width: 100%;
	overflow: hidden;
}
.about3-img img {
	width: 100%;
}
.about3-list .about3-txt {
	width: 100%;
	overflow: hidden;
	font-size: 14px;
	line-height: 20px;
	color: #b1b1b1;
	padding: 35px 25px;
}
.about3-txt h4 {
	color: #333333;
	font-size: 20px;
	line-height: 25px;
	margin: 0 0 5px;
	padding-left: 20px;
	background-image: url(../images/lsj.png);
	background-repeat: no-repeat;
	background-position: left center;
	background-size: 11px;
}
.about3-txt p {
	padding-left: 20px;
}
@media only screen and (max-width: 991px) {
	.about3 {
		padding: 90px 0 75px;
	}
	.about3 .about3-list {
		height: 650px;
	}
	.about3-list a {
		width: 280px;
		height: 310px;
	}
	.about3-list a:nth-of-type(2n+1) {
		margin: 0px 30px 30px 0;
	}
	.about3-list a:nth-of-type(2n) {
		margin: 0px 0px 30px;
	}
	.about3 .about3-list
	{
	    margin: 0;
	}
	.about3-list .about3-txt
	{
	    padding: 18px 0px;
	}
}
@media only screen and (max-width: 700px) {
	.about3 {
		padding: 0px 0 0px;
	}
	.about3 h2 {
		line-height: 65px;
		font-size: 28px;
		background-size: 80%;
	}
	.about3 .about3-list {
		height: 1395px;
	}
	.about3-list a {
		width: 100%;
		height: 325px;
	}
}
@media only screen and (min-width: 992px) {
	.about3 h2 {
		line-height: 93px;
		font-size: 36px;
		background-size: 405px auto;
	}
	.about3 .about3-list {
		height: 260px;
	}
	.about3-list a {
		width: 227.5px;
		height: 260px;
		box-shadow: 0px 0px 12px 1px rgba(33,27,24,0.16);
		margin-right: 20px;
	}
	.about3-list .about3-txt {
	    padding: 25px 20px;
	}
}
@media only screen and (min-width: 1200px) {
	.about3 h2 {
		line-height: 123px;
		font-size: 48px;
		background-size: 539px auto;
	}
	.about3 .about3-list {
		height: 290px;
	}
	.about3-list a {
		width: 265px;
		height: 290px;
		box-shadow: 0px 0px 16px 1px rgba(33,27,24,0.16);
		margin-right: 30px;
	}
	.about3-list .about3-txt {
	    padding: 35px 25px;
	}
}
@media only screen and (min-width: 1650px) {
	.about3 .about3-list {
		height: 335px;
	}
	.about3-list a {
		width: 350px;
		height: 335px;
		box-shadow: 0px 0px 23px 1px rgba(33,27,24,0.16);
		margin-right: 50px;
	}
}
@media only screen and (min-width: 1921px) {
	.about3 {
	    background-size: 100%;
	}
}
/*视频弹出显示*/
.video-masked {
	width: 100%;
	height: 100%;
	overflow: hidden;
	background-color: rgba(0,0,0,0.7);
	position: fixed;
	left: 0;
	top: 0;
	z-index: 105;
	display: none;
}
.video-masked ul {
	width: 100px;
	height: 100px;
	overflow: hidden;
	background-color: rgba(0,0,0,0.5);
	position: absolute;
	top: 0px;
	right: 0px;
	border-radius: 0 0 0 120px;
}
.video-masked ul li {
	width: 40px;
	height: 40px;
	overflow: hidden;
	margin: 20px 0 0 40px;
	position: relative;
	cursor: pointer;
}
.video-masked ul li:before,.video-masked ul li:after {
	content: '';
	display: block;
	width: 40px;
	height: 4px;
	border-radius: 2px;
	background-color: #FFFFFF;
	overflow: hidden;
	position: absolute;
	left: 50%;
	top: 50%;
	margin: -2px 0 0 -20px;
	transform: rotate(45deg);
}
.video-masked ul li:after {
	transform: rotate(-45deg);
}
.video-masked video {
	display: block;
	width: 1100px;
	background-color: #000000;
	margin: 160px auto 0;
	box-shadow: 0px 0px 16px rgba(0,0,0,0.5);
}
@media only screen and (max-width: 991px) {
	.video-masked video {
		width: 660px;
		margin: 270px 0 0 -35px;
	}
}
@media only screen and (max-width: 700px) {
	.video-masked video {
		width: 325px;
		margin: 220px 0 0;
	}
	.video-masked ul {
		width: 50px;
		height: 50px;
		border-radius: 0 0 0 45px;
	}
	.video-masked ul li {
		width: 24px;
		height: 24px;
		margin: 7px 0 0 17px;
	}
	.video-masked ul li:before,.video-masked ul li:after {
		width: 24px;
		height: 2px;
		border-radius: 1px;
		margin: -1px 0 0 -12px;
	}
}
@media only screen and (min-width: 992px) {
	.video-masked video {
		width: 800px;
		margin: 150px auto 0;
	}
}
@media only screen and (min-width: 1200px) {
	.video-masked video {
		width: 1100px;
		margin: 100px auto 0;
	}
}
@media only screen and (min-width: 1650px) {
	.video-masked video {
		margin: 160px auto 0;
	}
}
.about4 {
	width: 100%;
	overflow: hidden;
}
.about4 .about4-box {
	width: 50%;
	overflow: hidden;
	float: left;
	position: relative;
}
.about4 .about4-masked {
	width: 170px;
	overflow: hidden;
	text-align: center;
	color: #FFFFFF;
	font-size: 20px;
	position: absolute;
	left: 50%;
	top: 50%;
	margin: -50px 0 0 -85px;
}
.about4 .about4-masked img {
	margin: 0 0 25px;
	cursor: pointer;
}
@media only screen and (max-width: 991px) {
	.about4 .about4-box {
		width: 100%;
		float: none;
	}
	.about4 .about4-masked {
		width: 220px;
		font-size: 26px;
		margin: -70px 0 0 -110px;
	}
}
@media only screen and (max-width: 700px) {
	.about4 .about4-box>img {
		width: 600px;
		position: relative;
		left: 50%;
		margin-left: -300px;
	}
	.about4 .about4-masked {
		width: 220px;
		font-size: 16px;
		margin: -51px 0 0 -110px;
	}
	.about4 .about4-masked img {
		width: 65px;
		margin: 0 0 15px;
	}
}
@media only screen and (min-width: 992px) {
	.about4 .about4-box>img {
		width: 600px;
		position: relative;
		left: 50%;
		margin-left: -300px;
	}
	.about4 .about4-masked {
		width: 130px;
		font-size: 16px;
		margin: -50px 0 0 -65px;
	}
	.about4 .about4-masked img {
		width: 72px;
		margin: 0 0 15px;
	}
}
@media only screen and (min-width: 1200px) {
	.about4 .about4-box>img {
		width: 830px;
		margin-left: -415px;
	}
	.about4 .about4-masked {
		width: 170px;
		font-size: 20px;
		margin: -50px 0 0 -85px;
	}
	.about4 .about4-masked img {
		width: 93px;
		margin: 0 0 25px;
	}
}
@media only screen and (min-width: 1650px) {
	.about4 .about4-box>img {
		width: 960px;
		margin-left: -480px;
	}
}
@media only screen and (min-width: 1921px) {
	.about4 .about4-box>img {
		width: 100%;
		margin-left: 0px;
		left: 0px;
	}
}


/*企业文化*/
.about2 {
	width: 100%;
	overflow: hidden;
	padding: 0px 0 0px 0px;
}
.about2 ul {
	width: 100%;
	height: auto;
	margin: 70px 0 0;
}
.about2 ul li {
	width: 210px;
	height: 290px;
	float: left;
	text-align: center;
	margin: 0 120px 40px 0;
	color: #949494;
	font-size: 14px;
}
.about2 ul li:last-of-type {
	margin: 0 0 40px;
}
.about2 ul li .about2_img {
	width: 180px;
	height: 180px;
	border-radius: 50%;
	overflow: hidden;
	margin: 0 auto 20px;
	transition: all 1s;
}
.about2 ul li .about2_img:hover {
	box-shadow: 0 0 20px rgba(0,162,233,0.5);
}
.about2_img img {
	width: 100%;
}
.about2 ul li h4 {
	font-size: 18px;
	color: #221815;
	font-weight: bold;
	margin: 0 0 10px;
}
@media only screen and (max-width: 1199px) {
	.about2 ul li {
		margin: 0 100px 40px 0;
	}
	.about2 ul li:nth-of-type(3){
	    margin: 0 0 40px;
	}
}
@media only screen and (max-width: 991px) {
	.about2 {
		padding: 95px 0px 65px;
	}
	.about2 ul li:nth-of-type(2n),.about2 ul li:nth-of-type(2n+1) {
		margin: 0 50px 40px;
		width: 310px;
	}
	.about2 ul li p
	{
	    font-size:16px;
	}
}
@media only screen and (max-width: 767px) {
	.about2 {
		width: 335px;
		padding: 0px 0 30px;
		margin: 0 auto;
	}
	.about2 ul {
	    margin: 20px 0 0;
	}
	.about2 ul li {
		height: 215px;
		font-size: 12px;
	}
	.about2 ul li:nth-of-type(2n+1) {
		width: calc(50% - 10px);
		width: -moz-calc(50% - 10px);
		width: -webkit-calc(50% - 10px);
		margin: 0 20px 20px 0;
		float: left;
	}
	.about2 ul li:nth-of-type(2n) {
		width: calc(50% - 10px);
		width: -moz-calc(50% - 10px);
		width: -webkit-calc(50% - 10px);
		margin: 0 0 20px;
		float: left;
	}
	.about2 ul li .about2_img {
	    width: 120px;
	    height: 120px;
	    margin: 0 auto 15px;
	}
	.about2 ul li br {
		display: none;
	}
	.about2 ul li p {
        font-size: 14px !important;
    }
}
@media only screen and (min-width: 1300px) {
	.about2 ul li {
		margin: 0 20px 40px 0;
	}
}
@media only screen and (min-width: 1400px) {
	.about2 ul li {
		margin: 0 40px 40px 0;
	}
}
@media only screen and (min-width: 1600px) {
	.about2 ul li {
		margin: 0 75px 40px 0;
	}
}
@media only screen and (min-width: 1700px) {
	.about2 ul li {
		margin: 0 120px 40px 0;
	}
}