.about_us {
	width: 100%;
	box-sizing: border-box; 
}
.about_us_bd1 {
	width: 100%;
	margin: 0 auto;
	box-sizing: border-box;
}
.about_us_con {
	font-size: 24px;
	line-height: 36px;
	color: #1A1A1A;
	padding: 20px 0 100px 0;
	box-sizing: border-box;
}
.about_us_con_img {
	width: 100%;
	box-sizing: border-box;
}
.about_us_con_img img {
	width: 100%;
	height: 100%;
} 
.about_us_bd2 {
	width: 100%;
	box-sizing: border-box;
	position: relative;
	margin-top: 120px;
}
.about_us_bd2_bg img {
	width: 100%;
	height: 100%;
}
.about_us_bd2_con {
	position: absolute;
	left: 50%; 
	margin-left: -543.5px;
	width: 1087px;
	top: 0;
	padding: 68px 0 0 0;
	display: flex;
}
.icon {
	width: 42px;
	height: 42px;
	padding: 5px;
	border-radius: 50%;
	border: 2px solid #E60012;
}
.icon span {
	display: inline-block;
	width: 100%;
	height: 100%;
	background: #E60012;
	border-radius: 50%;
}
.year_list {
	width: 220px; 
	box-sizing: border-box;
	margin-left: 21px;
	margin-top: 15px;
}
.year_list_bd {
	width: 100%;
	box-sizing: border-box;
	border-left: 4px solid #E60012;
	padding: 30px;
	position: relative;
	font-size: 24px;
	line-height: 36px;
	color: #1A1A1A;
	cursor: pointer;
}
.left_icon {
	position: absolute;
	top: 50%;
	margin-top: -10px;
	right: 0;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-right: 20px solid red;
    border-bottom: 10px solid transparent;
}
.year_list_bd_end {
	border-left: 4px solid #CDCDCD;
	margin-top: 5px;
	height: 15px;
	padding: 0;
}
.about_us_bd2_con_right {
	flex: 1;
	box-sizing: border-box;
}
.about_us_bd2_con_right_name {
	font-size: 30px;
	color: #E60012;
	font-weight: 600;
	padding: 10px 0;
}
.about_us_bd2_con_right_box {
	width: 866px;
	box-sizing: border-box;
	background: #fffe;
	margin-top: 20px;
}
.about_us_bd2_con_right_box_title {
	width: 100%;
	box-sizing: border-box;
	height: 132px;
	line-height: 132px;
	background: #E60012;
	font-size: 30px;
	color: #fff;
	padding:0 100px;
}
.about_us_bd2_con_right_box_con {
	padding: 50px 90px;
	color: #666666;
	font-size: 16px;
	height: 260px;
	overflow-y: auto;
	line-height: 36px;
	box-sizing: border-box;
}
.about_us_bd3 {
	width: 100%;
	box-sizing: border-box;
	display: flex;
	justify-content: center;
	align-items: center;
}
.about_us_bd3_left,.about_us_bd3_right {
	width: 80px;
	height: 100%;
}
.about_us_bd3_left img,.about_us_bd3_right img {
	width: 80px;
	height: 80px;
	cursor: pointer;
}
.about_us_bd3_con {
	display: flex;
	flex: 1;
	justify-content: flex-start;
	box-sizing: border-box;
	padding: 0 87px 50px 87px;
}
.about_us_bd3_con_bd {
	width: 377px;
	height: 457px;
	display: flex;
	align-items: center;
	text-align: center;
	margin-right: 74px;
}
.about_us_bd3_con_bd:nth-child(3n) {
	margin: 0;
}
.about_us_bd3_con_bd img {
	width: 100%;
	height: 100%;
	object-fit: contain;
}
.about_us_bd4 {
	width: 100%;
	box-sizing: border-box;
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	margin-bottom: 100px;
}
.about_us_bd4_hd {
	width: 48%;  
	box-sizing: border-box;
}
.about_us_bd4_hd_img {
	width: 100%;
	height: 370px;
	display: flex;
	align-items: center;
	text-align: center;
	overflow: hidden;
}
.about_us_bd4_hd_img img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}
.about_us_bd4_hd_title {
	font-size: 24px;
	color: #1A1A1A;
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 1;
	-webkit-box-orient: vertical;
	padding: 30px;
	font-weight: 600;
}
.about_us_bd4_hd_con {
	font-size: 16px;
	line-height: 36px;
	color: #666666;
	padding: 0 30px 50px 30px;
}

@media screen and (max-width:960px){ 
	.about_us_con {
		font-size: 12px;
		line-height: 18px;
		padding: 0 10px 50px 10px;
		box-sizing: border-box;
	}
	.about_us_bd2 {
		margin-top: 40px;
	}
	.about_us_bd2_con {
		margin-left: -40%;
		width: 80%; 
		padding: 0;
		display: inherit;
		height: 200px;
	}
	.about_us_bd2_con_right_name {
		font-size: 15px;
	}
	.about_us_bd2_con_right_box {
		width: 100%; 
		margin-top: 15px;
		height: 80%; 
	}
	.about_us_bd2_con_right_box_con {
		overflow-y: auto;
		padding: 10px;
		height: 100px;
		font-size: 12px;
		line-height: 18px;
	}
	.about_us_bd2_con_right_box_title {
		height: 50px; 
		width: 100%;
		padding: 0;
	}
	.year_list {
		height: 50px;
		display: flex;
		width: 100%;
		margin: 0;
		justify-content: flex-start;
	}
	.year_list_bd {
		font-size: 14px;
		color: #fff;
		height: 50px;
		line-height: 50px;
		padding: 0;
		border: none;
		width: 80px;
		font-weight: 600;
		text-align: center;
	}
	.left_icon {
	    position: absolute;
	    left: 50%;
	    margin-left: -10px;
	    bottom: 0;
	    width: 0;
	    height: 0;
		top: inherit;
		margin-top: 0;
	    border-left: 6px solid transparent;
	    border-bottom: 8px solid #fff;
	    border-right: 6px solid transparent;
	}
	.about_us_bd2_bg {
		height: 224px;
	}
	.about_us_bd2_con_right {
		height: 100%; 
	}
	.about_us_bd3_left, .about_us_bd3_right {
		width: 40px;
		height: 40px;
	}
	.about_us_bd3_left img, .about_us_bd3_right img {
		width: 40px;
		height: 40px;
	}
	.about_us_bd3_con {
		padding: 20px;
	}
	.about_us_bd3_con_bd {
		width: 50%;
		margin-right: 0;
		box-sizing: border-box;
		padding: 10px;
		height: 300px;
	}
	.about_us_bd4_hd {
		width: 100%;
	}
	.about_us_bd4_hd_img {
		height: 185px;
	}
	.about_us_bd4_hd_title {
		font-size: 14px;
		padding: 20px 15px 15px 15px;
	}
	.about_us_bd4_hd_con {
		font-size: 12px;
		padding: 0 15px 40px 15px;
		line-height: 25px;
	}
	
   
}
/*适应pc*/
@media screen and (min-width:960px) {   
	 
}