.banner {
	width: 100%;
}

.banner img {
	display: block;
	width: 100%;
}

.main {
	background-color: #FFFFFF;
}

.main .item1 {
	padding-top: 130px;
	padding-bottom: 160px;
}

.main .item1 .l {
	width: calc((420 / 1400) * 100%);
	float: left;
}

.main .item1 .r {
	width: calc((980 / 1400) * 100%);
	float: right;
}

.main .item1 .l h5 {
	font-size: 42px;
	font-weight: bold;
	color: #333333;
	line-height: 82px;
}

.main .item1 .l p.summary {
	font-size: 16px;
	color: #000000;
	line-height: 32px;
	font-family: 'pingfang';
	box-sizing: border-box;
	padding-right: 40px;
}

.main .item1 .l .hot_line {
	padding-top: 30px;
}

.main .item1 .l .hot_line h6 {
	font-size: 18px;
	color: #333333;
	line-height: 20px;
}

.main .item1 .l .hot_line p {
	font-size: 28px;
	color: #333333;
	line-height: 48px;
	font-weight: bold;
}

.main .item1 a.product_more {
	display: block;
	width: 160px;
	height: 42px;
	box-sizing: border-box;
	border: 1px solid #222222;
	font-size: 18px;
	color: #222222;
	text-align: center;
	line-height: 42px;
	margin-top: 58px;
}

.main .item1 a.contact {
	display: block;
	width: 160px;
	height: 42px;
	box-sizing: border-box;
	background-color: #1b1b1b;
	font-size: 18px;
	color: #FFFFFF;
	text-align: center;
	line-height: 42px;
	margin-top: 20px;
}

.main .item1 .r ul.pic_list {
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
}

.main .item1 .r ul.pic_list li {
	width: 220px;
	overflow: hidden;
	transition: width 0.5s;
}

.main .item1 .r ul.pic_list li.active {
	width: 510px;
}

.main .item1 .r ul.pic_list li img {
	display: block;
}

.main .item2 {
	height: 990px;
	background-image: url(../images/shebei_bg.jpg);
	background-repeat: no-repeat;
	background-position: center center;
	box-sizing: border-box;
	padding-top: 145px;
}

.main .item2 ul.top_list {
	position: relative;
	height: 476px;
}

.main .item2 ul.top_list li {
	width: 100%;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	/*display: none;*/
	opacity: 0;
	transition: 0.5s;
	position: absolute;
}

.main .item2 ul.top_list li.active {
	/*display: flex;*/
	opacity: 1;
}

.main .item2 ul.top_list li .l,
.main .item2 ul.top_list li .r {
	width: 50%;
}

.main .item2 ul.top_list li .l .num {
	font-size: 66px;
	color: #ffffff;
	line-height: 76px;
	font-weight: bold;
	position: relative;
}

.main .item2 ul.top_list li .l .num:after {
	content: "";
	width: 610px;
	height: 1px;
	background-color: #FFFFFF;
	position: absolute;
	right: 0px;
	top: calc(50% - 0.5px);
}

.main .item2 ul.top_list li .l .title_img img {
	display: block;
	margin-top: 70px;
}

.main .item2 ul.top_list li .l h5 {
	font-size: 42px;
	font-weight: bold;
	color: #FFFFFF;
	line-height: 62px;
}

.main .item2 ul.top_list li .l p.summary {
	font-size: 16px;
	font-family: 'pingfang';
	color: #FFFFFF;
	line-height: 32px;
	font-weight: 100;
	padding-top: 20px;
}

.main .item2 ul.top_list li .l a.product_more {
	display: block;
	width: 212px;
	padding-right: 67px;
	height: 54px;
	box-sizing: border-box;
	border: 1px solid #ffffff;
	font-size: 18px;
	font-family: 'pingfang';
	color: #FFFFFF;
	text-align: center;
	line-height: 54px;
	background-image: url(../images/product_more.png);
	background-repeat: no-repeat;
	background-position: right 55px center;
	margin-top: 60px;
}

.main .item2 ul.top_list li .r .pic img {
	display: block;
	width: 100%;
}

.main .item2 ul.bottom_list {
	display: flex;
	flex-flow: row nowrap;
	justify-content: flex-start;
	padding-top: 120px;
}

.main .item2 ul.bottom_list li {
	width: calc(100% / 5);
	box-sizing: border-box;
	font-family: 'pingfang';
	font-size: 18px;
	color: #000000;
	line-height: 98px;
	text-align: center;
	background-color: #f6f6f6;
	border-left: 1px solid #222222;
	position: relative;
	cursor: pointer;
}

.main .item2 ul.bottom_list li.active {
	background-color: #1e1e1e;
	color: #FFFFFF;
}

.main .item2 ul.bottom_list li.active:after {
	content: "";
	display: block;
	width: 0px;
	height: 0px;
	border: 13px solid;
	border-color: transparent transparent #1e1e1e transparent;
	position: absolute;
	top: -26px;
	left: calc(50% - 6px);
}

.main .item3 {
	padding-top: 80px;
	padding-bottom: 150px;
}

.main .item3 .title_img img {
	display: block;
	margin: 0 auto;
}

.main .item3 h5 {
	font-size: 42px;
	color: #1a1919;
	font-weight: bold;
	text-align: center;
}

.main .item3 p.summary {
	font-family: 'pingfang';
	font-size: 20px;
	color: #000000;
	text-align: center;
	line-height: 108px;
}

.main .item3 ul.product_list {
	display: flex;
	flex-flow: row wrap;
	justify-content: space-between;
}

.main .item3 ul.product_list li {
	width: calc((100% - 24px) / 2);
	margin-bottom: 24px;
}

.main .item3 ul.product_list li .pic {
	overflow: hidden;
}

.main .item3 ul.product_list li .pic img {
	display: block;
	width: 100%;
	transition: 0.5s;
}

.main .item3 ul.product_list li:hover img {
	transform: scale(1.1);
}

.main .item3 a.product_more {
	display: block;
	width: 260px;
	height: 64px;
	background-color: #222222;
	font-family: 'pingfang';
	font-size: 18px;
	color: #FFFFFF;
	text-align: center;
	line-height: 64px;
	margin: 0 auto;
	margin-top: 36px;
}

.main .item4 {
	display: flex;
	flex-flow: row nowrap;
	justify-content: flex-start;
}

.main .item4 .pic img {
	display: block;
}

.main .item4 .pic {
	overflow: hidden; 
}

.main .item4 .pic:nth-of-type(1) {
	width: calc((260 / 1920) * 100% );
}

.main .item4 .pic:nth-of-type(2) {
	width: calc((410 / 1920) * 100% );
}

.main .item4 .pic:nth-of-type(3) {
	width: calc((415 / 1920) * 100% );
}

.main .item4 .pic:nth-of-type(4) {
	width: calc((415 / 1920) * 100% );
}

.main .item4 .txt {
	width: calc((415 / 1920) * 100% );
	box-sizing: border-box;
	padding: 0 15px;
	background-color: #222222;
}

.main .item4 .txt .title_img {
	padding-top: 110px;
}

.main .item4 .txt .title_img img {
	display: block;
}

.main .item4 .txt h5 {
	font-size: 42px;
	color: #ffffff;
	line-height: 72px;
	padding-bottom: 30px;
	border-bottom: 1px solid #FFFFFF;
}

.main .item4 .txt p.summary {
	font-family: 'pingfang';
	font-size: 16px;
	line-height: 32px;
	color: #FFFFFF;
	padding-top: 40px;
}

.main .item4 .txt a.contact {
	display: block;
	width: 212px;
	height: 54px;
	box-sizing: border-box;
	border: 1px solid #FFFFFF;
	padding-right: 70px;
	font-family: 'pingfang';
	font-size: 18px;
	color: #FFFFFF;
	line-height: 54px;
	text-align: center;
	background-image: url(../images/product_more.png);
	background-repeat: no-repeat;
	background-position: right 57px center;
	margin-top: 72px;
}

.main .item5 {
	padding-top: 100px;
	padding-bottom: 100px;
}

.main .item5 .title_img img {
	display: block;
	margin: 0 auto;
}

.main .item5 h5 {
	font-size: 42px;
	color: #1a1919;
	font-weight: bold;
	text-align: center;
	line-height: 62px;
}

.main .item5 .news {
	padding-top: 80px;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
}

.main .item5 .news .l,
.main .item5 .news .r {
	width: calc((100% - 15px) / 2);
}

.main .item5 .news .l .news_list {
	position: relative;
}

.main .item5 .news .l .news_list .pic img {
	display: block;
	width: 100%;
}

.main .item5 .news .l .news_list .txt {
	width: 100%;
	box-sizing: border-box;
	padding: 0 24px;
	background-color: rgba(51,51,51,.7);
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	position: absolute;
	bottom: 0px;
	left: 0px;
}

.main .item5 .news .l .news_list .txt p {
	font-size: 25px;
	color: #ffffff;
	font-weight: bold;
	line-height: 70px;
}

.main .item5 .news .l .news_list .txt span.addtime {
	display: block;
	font-family: "黑体";
	font-size: 20px;
	color: #cccccc;
	line-height: 70px;
}

.main .item5 .news .r ul li {
	box-sizing: border-box;
	padding: 0 30px;
	background-color: #f3f3f3;
	padding-top: 30px;
	padding-bottom: 36px;
	margin-bottom: 15px;
	transition: 0.5s;
}

.main .item5 .news .r ul li:hover {
	box-shadow: 0 0 25px #CCCCCC;
}

.main .item5 .news .r ul li .title {
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
}

.main .item5 .news .r ul li .title h5 {
	font-size: 25px;
	font-weight: bold;
	color: #1a1919;
	line-height: 53px;
}

.main .item5 .news .r ul li .title span.addtime {
	display: block;
	font-family: "黑体";
	font-size: 20px;
	color: #999999;
	line-height: 53px;
}

.main .item5 .news .r ul li p.summary {
	font-family: 'pingfang';
	font-size: 16px;
	color: #666666;
	line-height: 24px;
}


@media screen and (max-width: 1430px) {
	
	.main .item2 ul.top_list li .l .num:after {
		width: 510px;
	}
	
	.main .item5 .news .r ul li {
		padding-top: 40px;
		padding-bottom: 55px;
	}
	
	.main .item5 .news .r ul li:last-child {
		display: none;
	}
	
}

@media screen and (max-width: 550px) {
	
	.main .item1 {
		padding-top: 20px;
		padding-bottom: 20px;
	}
	
	.main .item1 .l,
	.main .item1 .r {
		width: 100%;
	}
	
	.main .item1 .l h5 {
		font-size: 24px;
		line-height: 48px;
		text-align: center;
	}
	
	.main .item1 .l p.summary {
		padding-right: 0px;
		font-size: 16px;
	}
	
	.main .item1 .l .hot_line {
		padding-top: 20px;
	}
	
	.main .item1 .l .hot_line p {
		font-size: 18px;
	}
	
	.main .item1 a.product_more {
		display: inline-block;
		margin-top: 20px;
	}
	
	.main .item1 a.contact {
		display: inline-block;
	}
	
	.main .item1 .r {
		padding-top: 20px;	
	}
	
	.main .item1 .r ul.pic_list li {
		display: none;
	}
	
	.main .item1 .r ul.pic_list li:first-child {
		display: block;
		width: 100%;
	}
	
	.main .item1 .r ul.pic_list li img {
		display: block;
		width: 100%;
	}
	
	
	.main .item2 {
		display: none;
	}
	
	
	
	
	
	.main .item3 {
		padding-top: 20px;
		padding-bottom: 20px;
	}
	
	.main .item3 .title_img {
		padding-bottom: 20px;
	}
	
	.main .item3 .title_img img {
		width: 90%;
	}
	
	.main .item3 h5 {
		font-size: 24px;
		line-height: 48px;
	}
	
	.main .item3 p.summary {
		font-size: 16px;
		line-height: 26px;
	}
	
	.main .item3 ul.product_list {
		padding-top: 10px;
	}
	
	.main .item3 ul.product_list li {
		width: calc((100% - 10px) / 2);
		margin-bottom: 10px;
	}
	
	.main .item3 a.product_more {
		width: 160px;
		height: 42px;
		line-height: 42px;
		margin-top: 15px;
	}
	
	.main .item4 {
		display: none;
	}
	
	.main .item5 {
		padding-top: 20px;
		padding-bottom: 60px;
	}
	
	.main .item5 .title_img img {
		width: 90%;
		padding-bottom: 10px;
	}
	
	.main .item5 h5 {
		font-size: 24px;
		line-height: 48px;
	}
	
	.main .item5 .news {
		padding-top: 15px;
		flex-flow: row wrap;
	}
	
	.main .item5 .news .l, .main .item5 .news .r {
		width: 100%;
	}
	
	.main .item5 .news .l .news_list .txt {
		padding: 0 10px;
	}
	
	.main .item5 .news .l {
		margin-bottom: 10px;
	}
	
	.main .item5 .news .l .news_list .txt p {
		font-size: 14px;
	}
	
	.main .item5 .news .l .news_list .txt span.addtime {
		display: none;
	}
	
	.main .item5 .news .r ul li {
		display: none;
		padding: 10px;
	}
	
	.main .item5 .news .r ul li:first-child {
		display: block;
	}
	
	.main .item5 .news .r ul li .title span.addtime {
		display: none;
	}
	
	.main .item5 .news .r ul li .title h5 {
		font-size: 16px;
	}
	
	.main .item5 .news .r ul li p.summary {
		font-size: 14px;
	}	
}