.dust_box{
	width: 100%;
	display: flex;
	flex-direction: column;
}
.center{
	width: 1240px;
	margin: 0 auto;
}

.db_top{
	width: 100%;
	display: flex;
	flex-direction: column;
}
.db_top1{
	width: 100%;
	height: 550px;
	background: url('../../images/dust/topBg1.png') no-repeat;
	display: flex;
	flex-direction: column;
}

.db_top1_title1{
	margin-top: 164px;
	width: 201px;
	height: 23px;
	font-size: 16px;
	font-family: Source Han Serif CN-Medium, Source Han Serif CN;
	font-weight: 500;
	color: #454545;
	line-height: 19px;
	margin-bottom: 15px;
}
.db_top1_title2{
	height: 72px;
	font-size: 50px;
	font-family: Source Han Serif CN-Heavy, Source Han Serif CN;
	font-weight: 800;
	color: #407BFF;
	line-height: 59px;
	letter-spacing: 2px;
	margin-bottom: 28px;
}

.db_top1_items{
	display: flex;
	flex-direction: row;
}

.db_top1_item{
	display: flex;
	flex-direction: row;
	align-items: center;
	margin-right: 50px;
}
.db_top1_item1{
	width: 3px;
	height: 17px;
	background: #407BFF;
	margin-right: 5px;
}
.db_top1_item2{
	height: 24px;
	font-size: 16px;
	font-family: Source Han Sans CN-Normal, Source Han Sans CN;
	font-weight: 400;
	color: #000000;
	line-height: 24px;
}

.db_top2{
	display: flex;
	flex-direction: column;
	width: 100%;
	height: 500px;
	background: linear-gradient(180deg, rgba(174,197,181,0) 0%, #AEC5B5 80%) ;
	padding: 30px 0;
	position: relative;
}

.db_top2_bg{
	background: url('../../images/dust/topBg2.png')  no-repeat;
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: 500px;
}


.db_top2_title{
	width: 583px;
	font-size: 32px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #000000;
	line-height: 38px;
	letter-spacing: 1px;
	margin-bottom: 35px;
}

.db_top2_title>span{
	color: #D72424;
}

.db_top2_desc{
	width: 712px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 25px;
}

.db_main{
	width: 100%;
	display: flex;
	flex-direction: column;
}

.db_main_top{
	display: flex;
	flex-direction: column;
	padding: 50px 0;
}
.db_main_top_title{
	height: 42px;
	font-size: 32px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #000000;
	line-height: 38px;
	letter-spacing: 1px;
	margin-bottom: 60px;
}
.db_main_top_val{
	display: flex;
	flex-direction: row;
}

.db_main_top_val1{
	width: 336px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 25px;
	border-right: 1px solid #454545;
	padding-right: 50px;
}
.db_main_top_val2{
	padding-left: 50px;
	width: 528px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 25px;
	position: relative;
}

.db_machine{
	position: absolute;
	right: -274px;
	top: -115px;
	width: 319px;
	height: 387px;
	z-index: 2;
}

.db_machine>img{
	width: 100%;
	height: 100%;
}

.db1{
	width: 100%;
	display: flex;
	flex-direction: column;
	position: relative;
	/* z-index: 1; */
}

.db1_mask{
	width: 100%;
	height: 323px;
	background: url('../../images/dust/topBg3.png') no-repeat;
	position: absolute;
	left: 0;
	top: 0;
	z-index: 1;
}
.db1_main{
	width: 100%;
	padding: 86px 86px 0 86px;
	margin-top: 37px;
	z-index: 2;
}
.db1_items{
	background: #ffffff;
	width: 100%;
	display: flex;
	flex-direction: column;
	padding: 30px 0;
	z-index: 2;
	border-radius: 10px 10px 0px 0px;
}

.db1_item{
	display: flex;
	flex-direction: column;
	margin-bottom: 65px;
	z-index: 2;
}


.db1_item_title{
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 32px;
}
.db1_item_title1{
	height: 32px;
	font-size: 24px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #407BFF;
	line-height: 28px;
	letter-spacing: 1px;
}
.db1_item_title2{
	height: 21px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #407BFF;
	line-height: 19px;
}

.db1_item_desc1{
	height: 42px;
	font-size: 32px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #000000;
	line-height: 38px;
	letter-spacing: 1px;
	margin-bottom: 32px;
}

.db1_item_desc2{
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: flex-end;
	margin-bottom: 15px;
}

.db1_item_desc2_left{
	width: 790px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 25px;
	
}
.db1_item_desc2_right{
	width: 55px;
	height: 10px;
	background: #407BFF;
	margin-bottom: 22px;
}

	
.db1_item_val{
	display: flex;
	flex-direction: row;
	justify-content: flex-end;
	position: relative;
}
.db1_item:nth-child(2n) .db1_item_val{
	justify-content: flex-start !important;
}

.db1_item_val_1{
	width: 560px;
	height: 100%;
	position: absolute;
	display: flex;
	flex-direction: column;
	justify-content: center;
	z-index: 1;
}
.leftPlace{
	left: 0;
}
.rightPlace{
	right:0
}



.db1_item_val_1_1{
	height: 138px;
	font-size: 96px;
	font-family: Source Han Serif CN-Bold, Source Han Serif CN;
	font-weight: bold;
	color: #F0F0F0;
	line-height: 113px;
	letter-spacing: 4px;
	margin-bottom: 11px;
}
.db1_item_val_1_2{
	height: 138px;
	font-size: 96px;
	font-family: Source Han Serif CN-Bold, Source Han Serif CN;
	font-weight: bold;
	color: #F0F0F0;
	line-height: 113px;
	letter-spacing: 4px;
	text-indent: 160px;
}
.db1_item_img{
	width: 708px;
	height: 387px;
	z-index: 2;
}
.db1_item_img>img{
	width: 100%;
	height: 100%;
}

.db2{
	width: 100%;
	display: flex;
	flex-direction: column;
}

.db2_banner{
	width: 100%;
	height: 612px;
	background: url('../../images/dust/csBg.png') no-repeat;
}

.db2_banner_in{
	width: 100%;
	position: relative;
}

.db2_item{
	width: 100%;
	height: 612px;
	display: flex;
	flex-direction: row;
}

.db2_item_tds{
	display: flex;
	flex-direction: row;
}
.db2_item_td{
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 248px;
	padding: 0 50px;
	border-left:1px solid rgba(255, 255, 255, 0.3);
	z-index: 1;
}

.db2_item_td:nth-last-child(1){
	border-right:1px solid rgba(255, 255, 255, 0.3);
}


.db2_item_td_img{
	width: 130px;
	height: 130px;
	margin-bottom: 44px;
	margin-top:113px;
}

.db2_item_td_img>img{
	width: 100%;
	height: 100%;
}
.db2_item_td_desc{
	display: flex;
	flex-direction: column;
}

.db2_item_td_desc1{
	width: 148px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #FFFFFF;
	line-height: 19px;
	text-align: center;
}
.db2_item_td_desc2{
	text-align: center;
	width: 148px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #FFFFFF;
	line-height: 19px;
}

.db2_prev{
	width: 25px;
	height: 25px;
	border-left:3px solid  #ffffff;
	border-top: 3px solid  #ffffff;
	transform: rotate(315deg);
	position: absolute;
	left: -35px;
	top: 269px;
	cursor: pointer;
}
.db2_next{
	cursor: pointer;
	position: absolute;
	width: 25px;
	height: 25px;
	border-left:3px solid  #ffffff;
	border-top: 3px solid  #ffffff;
	transform: rotate(135deg);
	position: absolute;
	right: -35px;
	top: 269px;
}

.db2_machine{
	width: 100%;
	height: 390px;
	background: #ffffff;
}

.db2_machine_box{
	width: 100%;
	height: 390px;
	padding: 0 150px;
}

.db2_machine_box_in{
	width: 100%;
	height: 390px;
	position: relative;
}

.db2_machine_box_in2{
	position: absolute;
	display: flex;
	flex-direction: column;
	align-items: center;
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	height: 620px;
}

.db2_machine_title{
	margin-top: 28px;
	margin-bottom: 15px;
	height: 32px;
	font-size: 24px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #000000;
	line-height: 28px;
	letter-spacing: 1px;
	text-align: center;
	z-index: 4;
}

.db2_machine_img{
	width: 568px;
	height: 512px;
	z-index: 4;
}

.db2_machine_img>img{
	width: 100%;
	height: 100%;
}

.db2_machine_mask{
	height: 680px;
	width: 100%;
	background: #ffffff;
	position: absolute;
	left: 0;
	top: 12px;
	z-index: 3;
	border-radius:50% 50% 0 0;
	-o-border-radius:50%;
	-ms-border-radius:50%;
	-moz-border-radius:50%;
	-webkit-border-radius:50%;
}

.db3{
	width: 100%;
	height: 638px;
	background: #F1F1F1;
}
.db3_main{
	display: flex;
	flex-direction: row;
	padding: 50px 0;
}

.db3_img{
	width: 344px;
	height: 523px;
	margin-right: 45px;
}

.db3_img>img{
	width: 100%;
	height: 100%;
}

.db3_sbItems{
	display: flex;
	flex-direction: column;
}


.db3_sbItem1_1{
	display: flex;
	flex-direction: column;
	margin-right: 65px;
}
.db3_sbItem1_1:nth-last-child(1){
	margin-right: 0;
}

.db3_sbItem1_1_title{
	height: 22px;
	font-size: 17px;
	font-family: Microsoft YaHei-Bold, Microsoft YaHei;
	font-weight: bold;
	color: #000000;
	line-height: 20px;
	margin-bottom: 15px;
}

.db3_sbItem1_1_desc{
	height: 21px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 19px;
}

.db3_sbItem2_1{
	display: flex;
	flex-direction: column;
	margin-right: 30px;
}

.db3_sbItem2_1:nth-last-child(1){
	margin-right:0;
}
.db3_sbItem2_1_desc{
	display: flex;
	flex-direction: row;
	margin-bottom: 15px;
}
.db3_sbItem2_1_desc1{
	height: 21px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 19px;
}

.db3_sbItem2_1_desc2{
	height: 21px;
	font-size: 16px;
	font-family: Microsoft YaHei-Regular, Microsoft YaHei;
	font-weight: 400;
	color: #454545;
	line-height: 19px;
	margin-left:15px;
}

.db3_sbItem1{
	display: flex;
	flex-direction: row;
	padding-bottom: 35px;
	border-bottom: 1px solid #BFBFBF;
}
.db3_sbItem2{
	padding: 23px 0 30px 0;
	display: flex;
	flex-direction: row;
	border-bottom: 1px solid #BFBFBF;
}
.db3_sbItem3{
	display: flex;
	flex-direction: row;
	padding: 26px 0 39px 0;
	border-bottom: 1px solid #BFBFBF;
}
.db3_sbItem4{
	display: flex;
	flex-direction: row;
	padding-top: 27px;
}

.db3_sbItem2 .db3_sbItem1_1:nth-child(1),
.db3_sbItem3 .db3_sbItem1_1:nth-child(1),
.db3_sbItem4 .db3_sbItem2_1:nth-child(1){
	width: 317px;
	margin-right: 50px;
}