.banner {
	width: 100%;
	height: 500px;
	position: relative;
}

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

.banner_dw {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
}

.banner_title {
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 48px;
	color: #FFFFFF;
	margin-bottom: 26px;
}

.banner_text {
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 20px;
	color: #FFFFFF;
}

.about_nav {
	height: 68px;
	line-height: 68px;
	background: #FFFFFF;
	border-bottom: 1px solid #E7E7E7;
}

.about_nav_item {
	padding: 0 28px;
	margin-right: 50px;
	display: inline-block;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	color: #333333;
	cursor: pointer;
}

.about_nav_active {
	position: relative;
	color: #2975F7;
}

.about_nav_active::after {
	content: "";
	position: absolute;
	left: 50%;
	bottom: 14px;
	transform: translateX(-50%);
	width: 26px;
	height: 4px;
	background: #2C7EF8;
	border-radius: 2px;
}

.about_label {
	text-align: center;
	margin-bottom: 68px;
	font-family: Source Han Sans CN;
	font-weight: bold;
	font-size: 26px;
	color: #333333;
}

.about_item1 {
	width: 100%;
	height: 678px;
	padding-top: 180px;
	box-sizing: border-box;
	background: url("../images/about_item1.jpg") no-repeat;
	background-size: 100% 100%;
}

.about_item1_centre {
	width: 1110px;
	margin: 0 auto;
}

.about_item1_title {
	font-family: Source Han Sans CN;
	font-weight: bold;
	font-size: 26px;
	color: #333333;
	position: relative;
	line-height: 60px;
}

.about_item1_title::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: 0;
	width: 80px;
	height: 2px;
	background: #2C7EF8;
	border-radius: 1px;
}

.about_item1_content {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	color: #444444;
	line-height: 28px;
	margin-top: 40px;
}

.about_item1_content p {
	margin-bottom: 20px;
}

.about_item2 {
	width: 100%;
	height: 280px;
	display: flex;
	align-items: center;
	background: url("../images/about_item2.jpg") no-repeat;
	background-size: 100% 100%;
}


.about_item2_flex {
	display: flex;
	align-items: center;
}

.about_item2_item {
	flex: 1;
	position: relative;
}


.about_item2_item::after {
	content: "";
	position: absolute;
	top: 50%;
	right: 0;
	transform: translateY(-50%);
	width: 1px;
	height: 56px;
	border: 1px solid rgba(255, 255, 255, 0.5);
}

.about_item2_item:last-child::after {
	display: none;
}

.about_item2_row {
	text-align: center;
}

.about_item2_num {
	font-family: MiSans;
	font-weight: bold;
	font-size: 60px;
	color: #FFFEFE;
}

.about_item2_text {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	color: #FFFEFE;
}

.about_item2_label {
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 20px;
	color: #FFFEFE;
}

.about_item3 {
	width: 100%;
	height: 678px;
	padding-top: 96px;
	background: #F9F9F9;
}

.about_item3_flex {
	display: flex;
	align-items: center;
	justify-content: center;
}

.about_item3_item {
	width: 294px;
	height: 308px;
	background: #FFFFFF;
	border-radius: 6px;
	margin-right: 22px;
}

.about_item3_item:last-child {
	margin-right: 0px;
}

.about_item3_item img {
	margin: 53px auto 12px auto;
}

.about_item3_item_label {
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 24px;
	color: #333333;
	margin-bottom: 14px;
}

.about_item3_item_text {
	width: 237px;
	margin: 0 auto;
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 18px;
	color: #666666;
}

.about_item4 {
	width: 100%;
	height: 678px;
	padding-top: 96px;
	background: #ffffff;
}

.about_item4_flex {
	display: flex;
	align-items: center;
	justify-content: center;
}

.about_item4_item {
	width: 296px;
	height: 383px;
	margin-right: 74px;
}

.about_item4_item:last-child {
	margin-right: 0px;
}

.about_item4_item img {
	width: 100%;
	height: 100%;
}

.about_item5 {
	width: 100%;
	height: 678px;
	padding-top: 96px;
	background: #F9F9F9;
}

.about_item5_flex {
	display: flex;
	align-items: center;
	justify-content: center;
}

.about_item5_item {
	width: 370px;
	height: 214px;
	background: #FFFFFF;
}

.about_item5_item img {
	margin: 29px auto 12px auto;
}

.about_item5_item_label {
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	color: #666666;
}

.about_item5_item_text {
	text-align: center;
	font-family: Source Han Sans CN;
	font-weight: bold;
	font-size: 18px;
	color: #333333;
}