@charset "UTF-8";
*, ::before, ::after {
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

/*top title*/
/*----------------------------------------*/
.top-title-wrapper {
	width: 89.6%;
	margin: 0 auto;
}
.top-title-wrapper .top-title {
	width: 100%;
	padding-bottom: 12.353%;
	background-image: url("../images/about-us/TopImg.jpg");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
}
.pt-part1 {
	margin-top: 108px;
}
.part1-desc {
	max-width: 1200px;
    padding-top: 32px;
    margin: 0 auto;
    font-size: 24px;
    line-height: 1.6;
    color: #595757;
    text-align: center;
}
.pc-wrap {
	line-height: 0;
}
@media only screen and (max-width: 1919px) {
	.pt-part1 {
		margin-top: 89.64px;
	}
}
@media only screen and (max-width: 1599px) {
	.pt-part1 {
		margin-top: 81px;
	}
	.top-title-wrapper {
		max-width: 1060px;
	}
	.part1-desc {
		font-size: 20px;
		line-height: 1.5;
	}
}
@media only screen and (max-width: 1299px) {
	.pt-part1 {
		margin-top: 73.44px;
	}
}
@media only screen and (max-width: 1024px) {
	.pc-wrap {
		display: none;
	}
	.top-title-wrapper .top-title {
		padding-bottom: 38.221529%;
		background-image: url("../images/about-us/m-TopImg.png");
	}
}
/*----------------------------------------*/
/*top title end*/

/*正文内容*/
/*----------------------------------------*/

/* key components */
.part-title {
	color: #000;
}
.pt-part .part-main-desc {
	max-width: 1200px;
	text-align: center;
	margin: 0px auto;
}
.pt-part .part-items {
	display: flex;
	display: -ms-flexbox;
	display: -webkit-flex;
	flex-wrap: wrap;
	-ms-flex-wrap: wrap;
	-webkit-flex-wrap: wrap;
}
.pt-part .part-items .part-item {
	display: block;
	width: calc((100% - 2.5%) / 3);
	margin-right: 1.25%;
}
.pt-part .part-items .part-item:nth-child(3n) {
	margin-right: 0;
}
.pt-part .part-items .part-item .part-item-img {
	overflow: hidden;
	position: relative;
}
.pt-part .part-items .part-item .part-item-img figure {
	width: 100%;
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    transition: all 0.6s;
    -moz-transition: all 0.6s;
    -webkit-transition: all 0.6s;
    -ms-transition: all 0.6s;
    -o-transition: all 0.6s;
}
.pt-part2 .part-items .part-item .part-item-img figure {
	padding-bottom: 56.25%;
}
.pt-part3 .part-items .part-item .part-item-img figure {
	padding-bottom: 56.25%;
}
.pt-part4 .part-items .part-item .part-item-img figure {
	padding-bottom: 56.25%;
}
.pt-part3 {
	background-color: #f6f6f6;
}
.pt-part2 .part-items .part-item:nth-child(1) .part-item-img figure {
	background-image: url('../images/about-us/part201.jpg');
}
.pt-part2 .part-items .part-item:nth-child(2) .part-item-img figure {
	background-image: url('https://usfile.jingdiao.com/uswebsite/images/about-us/part202.png');
}
.pt-part2 .part-items .part-item:nth-child(3) .part-item-img figure {
	background-image: url('../images/about-us/part203.jpg');
}
.pt-part3 .part-items .part-item:nth-child(1) .part-item-img figure {
	background-image: url('../images/about-us/part301.jpg');
}
.pt-part3 .part-items .part-item:nth-child(2) .part-item-img figure {
	background-image: url('../images/about-us/part302.jpg');
}
.pt-part3 .part-items .part-item:nth-child(3) .part-item-img figure {
	background-image: url('../images/about-us/part303.jpg');
}
.pt-part3 .part-items .part-item:nth-child(4) .part-item-img figure {
	background-image: url('../images/about-us/part304.jpg');
}
.pt-part3 .part-items .part-item:nth-child(5) .part-item-img figure {
	background-image: url('../images/about-us/part305.jpg');
}
.pt-part4 .part-items .part-item:nth-child(1) .part-item-img figure {
	background-image: url('../images/about-us/part401.jpg');
}
.pt-part4 .part-items .part-item:nth-child(2) .part-item-img figure {
	background-image: url('../images/about-us/part402.jpg');
}
.pt-part4 .part-items .part-item:nth-child(3) .part-item-img figure {
	background-image: url('../images/about-us/part403.jpg');
}
.pt-part .part-items .part-item .part-item-img .img-mask {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: #2d2d2d;
	opacity: 0;
    -moz-opacity: 0;
    -webkit-opacity: 0;
    filter: alpha(opacity=0);
    transition: all 0.6s;
    -moz-transition: all 0.6s;
    -webkit-transition: all 0.6s;
    -ms-transition: all 0.6s;
    -o-transition: all 0.6s;
}
.pt-part .part-items .part-item .part-item-img .img-mask .img-mask-title {
	position: absolute;
	display: none;
	top: 50%;
	left: 0;
	width: 100%;
	transform: translateY(-50%);
	-o-transform: translateY(-50%);
	-ms-transform: translateY(-50%);
	-moz-transform: translateY(-50%);
	-webkit-transform: translateY(-50%);
	text-align: center;
	font-family: 'HarmonyOS_Sans_SC_Bold';
	font-size: 24px;
	color: #fff;
	line-height: 1.5;
}
.pt-part .part-items .part-item .part-item-img .img-mask .img-mask-title .icon--8 {
	margin-left: 8px;
	font-weight: bold;
	font-size: 20px;
}
.pt-part .part-items .part-item .part-item-img .img-mask .img-mask-title .icon--8::before {
	color: #fff;
}
.pt-part .part-items .part-item:hover .part-item-img figure {
	transform: scale(1.1);
	-o-transform: scale(1.1);
	-ms-transform: scale(1.1);
	-moz-transform: scale(1.1);
	-webkit-transform: scale(1.1);
}
.pt-part .part-items .part-item:hover .part-item-img .img-mask {
	opacity: .3;
    -moz-opacity: .3;
    -webkit-opacity: .3;
    filter: alpha(opacity=30);
}
.pt-part .part-items .part-item .part-item-info {
	padding: 0 16px;
}
.pt-part .part-items .part-item .part-item-title {
	padding: 30px 0 14px 0;
	text-align: center;
}
.pt-part .part-items .part-item .part-item-desc {
	text-align: center;
}
.pt-part .buttonBox {
	/*margin: 0 auto;
	margin-top: ;*/
	width: 300px;
	margin-left: auto;
	margin-right: auto;
}
@media only screen and (max-width: 1024px) {
	.pt-part1 {
		margin-top: 42px;
		margin-bottom: 0;
	}
	.part1-desc {
		font-size: 18px;
	}	
	
	.pt-part2 {
		background-color: #fff;
		padding-top: 42px;
	}
	.pt-part .part-main-desc {
		text-align: left;
	}
	.pt-part .part-items {
		margin-top: 24px;
		display: block;
	}
	.pt-part .part-items .part-item {
		width: 100%;
		margin-right: 0;
		margin-bottom: 24px;
	}
	.pt-part .part-items .part-item:last-child {
		margin-bottom: 0;
	}
	.pt-part2 .part-items .part-item .part-item-img figure,
	.pt-part3 .part-items .part-item .part-item-img figure,
	.pt-part4 .part-items .part-item .part-item-img figure {
		padding-bottom: 28.9855%;
	}
	.pt-part2 .part-items .part-item:nth-child(1) .part-item-img figure {
		background-image: url('../images/about-us/m-part201.png');
	}
	.pt-part2 .part-items .part-item:nth-child(2) .part-item-img figure {
		background-image: url('https://usfile.jingdiao.com/uswebsite/images/about-us/m-part202.png');
	}
	.pt-part2 .part-items .part-item:nth-child(3) .part-item-img figure {
		background-image: url('../images/about-us/m-part203.png');
	}
	.pt-part3 .part-items .part-item:nth-child(1) .part-item-img figure {
		background-image: url('../images/about-us/m-part301.png');
	}
	.pt-part3 .part-items .part-item:nth-child(2) .part-item-img figure {
		background-image: url('../images/about-us/m-part302.png');
	}
	.pt-part3 .part-items .part-item:nth-child(3) .part-item-img figure {
		background-image: url('../images/about-us/m-part303.png');
	}
	.pt-part3 .part-items .part-item:nth-child(4) .part-item-img figure {
		background-image: url('../images/about-us/m-part304.png');
	}
	.pt-part3 .part-items .part-item:nth-child(5) .part-item-img figure {
		background-image: url('../images/about-us/m-part305.png');
	}
	.pt-part4 .part-items .part-item:nth-child(1) .part-item-img figure {
		background-image: url('../images/about-us/m-part401.png');
	}
	.pt-part4 .part-items .part-item:nth-child(2) .part-item-img figure {
		background-image: url('../images/about-us/m-part402.png');
	}
	.pt-part4 .part-items .part-item:nth-child(3) .part-item-img figure {
		background-image: url('../images/about-us/m-part403.png');
	}
	.pt-part .buttonBox {
		width: 200px;
	}
	.pt-part .part-items .part-item .part-item-title {
		display: none;
	}
	.pt-part .part-items .part-item .part-item-img .img-mask .img-mask-title {
		display: block;
	}
	.pt-part .part-items .part-item .part-item-img .img-mask {
		background-color: transparent;
		opacity: 1;
		-moz-opacity: 1;
		-webkit-opacity: 1;
		filter: alpha(opacity=100);
	}
	.pt-part .part-items .part-item:hover .part-item-img .img-mask {
		opacity: 1;
		-moz-opacity: 1;
		-webkit-opacity: 1;
		filter: alpha(opacity=100);
	}
	.pt-part .part-items .part-item:hover .part-item-img figure {
		transform: scale(1);
		-o-transform: scale(1);
		-ms-transform: scale(1);
		-moz-transform: scale(1);
		-webkit-transform: scale(1);
	}
	.pt-part .part-items .part-item .part-item-info {
		padding: 0;
	}
	.pt-part .part-items .part-item .part-item-info .part-item-desc {
		text-align: left;
		margin-top: 12px;
		font-size: 14px;
	}
	.pt-part2 {
		padding-bottom: 42px;
	}
	.pt-part3 {
		padding-top: 42px;
		padding-bottom: 42px;
	}
	.pt-part4 {
		padding-top: 42px;
		padding-bottom: 42px;
	}
}
@media only screen and (max-width: 450px) {
	.part1-desc {
		font-size: 16px;
	}	
	.pt-part .buttonBox {
		width: 160px;
	}
	.pt-part .part-items .part-item .part-item-img .img-mask .img-mask-title {
		font-size: 22px;
	}
	.pt-part .part-items .part-item .part-item-img .img-mask .img-mask-title .icon--8 {
		font-size: 18px;
	}
	.pt-part .part-items .part-item .part-item-info .part-item-desc {
		font-size: 12px;
		/*margin-top: 12px;*/
	}
}
/*----------------------------------------*/
/*正文内容 end*/