/* 关于我们 */
.about-us {
	width: 90%;
	margin: 0 auto;
	margin-top: 50px;
	margin-bottom: 50px;
	padding-top: 10px;
	box-sizing: border-box;
}

.title1 {
	font-size: 34px;
	color: #1d51be;
	text-align: center;
}

.desc {
	font-size: 14px;
	line-height: 60px;
	text-align: center;
}

.desc-1 {
	color: #707070;
}

/* 介绍 */
.introduce {
	margin-top: 50px;
	display: flex;
}
.swiper-us {
	width: 48%;
	/* float: left; */
	margin-bottom: 53px;
}

.detailup {
	width: 100%;
	height: 0;
	padding-bottom: 2.5%;
	background-size: 70%;
	background-repeat: no-repeat;
}

.detaildown {
	width: 100%;
	height: 0;
	padding-bottom: 3.5%;
	background-size: 70%;
	background-repeat: no-repeat;
	background-position: right;
}


.detail {
	width: 50%;
	padding-left: 40px;
	margin: 50px 0;
	font-size: 16px;
	/* float: right; */
	color: #434343;
	line-height: 36px;
}
.more {
	width: 120px;
	height: 50px;
	color: #fff;
	margin-top: 40px;
	display: flex;
	/*垂直居中*/
	align-items: center;
	/*水平居中*/
	justify-content: center;
	background-color: rgba(29, 81, 190);
}

.more a {
	color: #fff;
}

/* 产品展示1 */
.product1 {
	width: 100%;
	background-image: url(../img/product1.jpg);
	overflow: hidden;
}

.product1-desc {
	width: 90%;
	margin: 0 auto;
	padding-top: 60px;
	padding-bottom: 53px;
	box-sizing: border-box;
}

/* 四个产品图 */
.proBox {
	width: 100%;
	margin: 0 auto;
	margin-top: 30px;
}

.proBox-1 {
	width: 100%;
	margin: 0 auto;
	overflow: hidden;
}


/* 产品展示2 */
.product2 {
	margin: 0 auto;
	box-sizing: border-box;
}

.product2-desc {
	width: 90%;
	margin: 0 auto;
	padding-top: 60px;
	padding-bottom: 30px;
	box-sizing: border-box;
}

/* 三个产品发展趋势 */
.product2-1 {
	width: 100%;
	margin: 0 auto;
	font-size: 0;
	overflow: hidden;
	margin-top: 30px;
}

.item {
	width: calc((100% - 100px) / 3);
	margin-right: 50px;
	display: inline-block;
	margin-bottom: 23px;
}

.item:last-of-type {
	margin-right: 0;
}


.item-content {
	background-color: #fff;
}

.item-thumb {
	position: relative;
	margin-bottom: 20px;
}

.item-th {
	object-fit: contain;
	text-align: center;
}

.item-th img {
	width: 100%;
	object-fit: cover;
}

.img-data {
	border: 1px #fff solid;
	font-size: 12px;
	position: absolute;
	right: 3%;
	bottom: 4%;
}

.img-data>span {
	margin: 3px;
	font-size: 12px;
	color: #fff;
}

.item-title {
	font-size: 18px;
	text-align: center;
	margin: 20px auto;
	color: #434343;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.item-desc {
	line-height: 30px;
	text-align: center;
	font-size: 16px;
	color: #707070;
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
}

.item-title:hover {
	color: #1d51be;
}

.item-desc:hover {
	color: #1d51be;
}

.product2-2 {
	width: 90%;
	margin: 0 auto;
	overflow: hidden;
	margin-top: 30px;
}

@media screen and (max-width: 1200px) {
	.swiper-us {
		width: 100%;
		margin-bottom: 3px;
	}
	.introduce {
		margin-top: 30px;
		display: flex;
		flex-direction: column;
	}
	.detail {
		width: 100%;
		padding-left: 0px;
	}
	.about-us {
		width: 94%;
		margin-top: 40px;
		margin-bottom: 40px;
	}

	.desc {
		margin-top: 15px;
		line-height: 30px;
	}

	.detail {
		margin-top: 40px;
		margin-bottom: 10px;
	}

	.product1-desc {
		width: 94%;
		padding-top: 40px;
		padding-bottom: 33px;
	}

	.product2-desc {
		width: 94%;
		padding-top: 40px;
		padding-bottom: 33px;
	}

	.item {
		width: calc((100% - 60px) / 3);
		margin-right: 30px;
	}
}

@media screen and (max-width: 1100px) {
	.item {
		width: calc((100% - 40px) / 3);
		margin-right: 20px;
	}

	.product2-desc {
		padding-bottom: 20px;
	}
}

@media screen and (max-width: 1000px) {
	.swiper-us {
		width: 100%;
		margin-bottom: 3px;
	}
	.introduce {
		margin-top: 30px;
		display: flex;
		flex-direction: column;
	}
	.detail {
		width: 100%;
	}
	.about-us {
		width: 96%;
		margin-top: 30px;
		margin-bottom: 30px;
	}

	.product1-desc {
		width: 96%;
		padding-top: 30px;
		padding-bottom: 25px;
	}

	.product2-desc {
		width: 96%;
		padding-top: 30px;
		padding-bottom: 25px;
	}
}


@media screen and (max-width: 800px) {
	.product2-1 {
		display: none;
	}
	.swiper-us {
		width: 100%;
		margin-bottom: 3px;
	}
	.detail {
		width: 100%;
	}
	.introduce {
		margin-top: 30px;
		display: flex;
		flex-direction: column;
	}
	.item {
		width: 100%;
		margin-right: 0;
		display: inline-block;
	}
	.product1 {
		background-size: cover;
	}

	.proBox {
		width: 100%;
		display: flex;
		flex-direction: column;
		align-items: center;
	}

	.proBox-1 {
		width: 100%;
	}

	.about-us {
		margin-top: 25px;
		margin-bottom: 25px;
	}

	.product1-desc {
		padding-top: 25px;
		padding-bottom: 20px;
	}

	.product2-desc {
		padding-top: 25px;
		padding-bottom: 20px;
	}

	.detail {
		margin-top: 20px;
		margin-bottom: 0px;
	}

	.more {
		margin-top: 20px;
	}

	.desc {
		margin-top: 15px;
		line-height: 16px;
	}
}