/*html,body{
	width: 100%;
	min-width: 1260px;
}*/

.article-container{
	max-width: 1500px;
	min-height: 450px;
	margin: 0 auto;
	display: flex;
	flex-direction: column;
	flex-wrap: nowrap;
	color: #000;
	
	font-family: Gotham-Book;
}

.nav{
	width: 100%;
	height: 180px;
	display: flex;
	flex-direction: row;
	align-items: center;
	justify-content: space-between;
}

.logo{
	width: 100px;
	height: 28px;
	background-image: url(../images/articles/sprite.svg);
	background-repeat: no-repeat;
	background-position: 0 0;
	margin-left: 20px;
}

.nav-search{
	width: 22px;
	height: 22px;
	background-image: url(../images/articles/sprite.svg);
	background-repeat: no-repeat;
	background-position: -120px 0;
	margin-right: 20px;
	cursor: pointer;
}

.nav-link{
	display: flex;
	flex-direction: row;
	flex-wrap: nowrap;
	width: 675px;
	justify-content: space-between;
}

.nav-link a{
	text-decoration: none;
	color: #000;
	font-size: 18px;
}

.filter{
	width: 100%;
	/*padding-left: 20px;*/
	/*padding-top: 40px;*/
	box-sizing: border-box;
	padding: 0 60px; 

	/*font-family: Gotham-Medium;*/
}

.filter-title{
	font-size: 36px;
	color: #000;
	line-height: 1;
	/*margin: 10px 0;*/
}

.filter-title .horizontal{
	display: inline-block;
	width: 120px;
	height: 19px;
	border-top: 2px solid #000;
	vertical-align: bottom;
	margin-left: 30px;
}

.filter-bar{
	display: flex;
	flex-direction: row;
	flex-wrap: nowrap;
}

.filter-table{
	width: 340px;
	display: flex;
	flex-direction: column;
	font-size: 18px;
	
	cursor: pointer;

	user-select: none;

	-webkit-tap-highlight-color: rgba(255, 255, 255, 0);
}



.search-category{
	margin-right: 100px;
}

.filter-table>p{
	padding-top: 40px;
	padding-bottom: 20px;
	margin: 0;
	border-bottom: 1px solid #000;

	cursor: pointer;
}

.dropdown{
	position: relative;
	margin-top: 20px;
	padding-top: 10px;
	padding-bottom: 10px;
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	line-height: 1;
	cursor: pointer;
}

.dropdown .pull-bar{
	/*width: 20px;
	height: 11px;
	background-image: url(../images/articles/sprite.svg);
	background-repeat: no-repeat;
	background-position: -150px 0;*/
	margin-right: 20px;
	/*cursor: pointer;*/
}

.polyline{
	stroke: #000;
	stroke-width: 2;
	fill: none;
	stroke-linecap: round;
}

.dropdown .pull-bar.active{
	background-position: -310px 0;
}

.article{
	box-sizing: border-box;
	width: 100%;
	/*padding: 0 20px;*/

	margin-top: -10px;
}

.article-single:first-child{
	
	width: 100%;
	max-width: none;
	 flex-basis: auto; 

	display: flex;
	flex-direction: row;
	flex-wrap: nowrap;
	margin-top: 100px;
	justify-content: space-between;
}

.article-detail{
	display: flex;
	flex-direction: column;
	align-items: left;  text-align:left;
	 width:100%
}

.article-single:first-child .article-detail{
	align-self: flex-end;
}
.head-side{ width:100%}
.article-single:first-child .head-side{
	padding-left: 40;
	display: flex;
	flex-flow: row nowrap;
	align-self: center;
	justify-content: center;
	flex-grow: 1;
}

.specific-title{
	font-size: 22px;
	line-height: 1.4;
	/*font-weight: bolder;*/
	font-weight: normal;
	padding-top: 20px;
	padding-bottom: 10px;
	/*padding-left: 5px;
	letter-spacing: 5px;*/

	 
	text-align: center;

	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;

	/*display: flex;
	justify-content: center;
	align-items: flex-end;*/

	box-sizing: content-box;

	/*font-family: Gotham-Medium;*/
}

.specific-kind{
	letter-spacing: 1px;
	font-size: 15px;
	line-height: 1;
	width: auto;
	text-align: justify;
	padding-top: 5px;
	padding-bottom: 10px;
	 color:#414141;

	font-family: Gotham-Medium;
}

.specific-introduce{
	font-size: 14px;
	line-height: 1.7;
	/*letter-spacing: 3px;*/
	text-align: left;	
	width: 100%;
	font-weight: normal;
 color:#414141;

	overflow: hidden;
	text-overflow: ellipsis;
	-webkit-box-orient: vertical;
	display: -webkit-box;
	-webkit-line-clamp: 2;
}

.article-list{
	width: 100%;
	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
	/*justify-content: space-between;*/
}

/*.article-list::after{
	content: '';
	width: 400px;
	height: 0;
}*/

.article-single{
	max-width: 31%;

	display: flex;
	flex-direction: column;
	align-items: center;
	margin-top: 60px;
	
	 flex-basis:470px;
	flex-grow: 1;
	flex-shrink: 1;

	cursor: pointer;

	color: #333;
}
 
.article-single:nth-child(3n){
	margin-right:3.5%;
	margin-left:3.5%;
}

.article-single .head-img{
	position: relative;
	display: table;
	height: 0;

	width: 100%;
	padding-top: 56.66%;
	/*background-color: #cac6c6;*/
	overflow: hidden;
}

.img-wrap{
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	display: block;
	overflow: hidden;
}

.read-more-box{
	width: 100%;
	text-align: center;
}

.read-more{
	display: inline-block;
	font-size: 18px;
	letter-spacing: 1px;
	text-align: center;
	margin-top: 140px;
	/*margin-bottom: 80px;*/
	line-height: 1;
	color:#000;
}
/*.read-more::after{
	display: block;
	content: '';
	width: 60px;
	height: 40px;
	border-bottom: 1px solid #000;
	margin: 0 auto;
}*/

.arrow-content{
	width: 80px;
	height: 80px;
	margin: 0 auto;
	overflow: hidden;
	text-align: center;

	position: relative;
}

.more-arrow{
	position: absolute;
	left: 50%;
	margin-left: -5px;
}

.arrow-top{
	top: -50%;
	margin-top: -9px;
}

.arrow-bottom{
	top: 50%;
	margin-top: -9px;
}

.read-more:hover .more-arrow{
	animation: arrowDown 1s cubic-bezier(.8,0,.2,1) 300ms;
	animation-fill-mode: backwards;
	animation-iteration-count: 1;
}


@keyframes arrowDown {
	0%{
		
	}

	100%{
		transform: translate3d(0,80px,0);
	}
}


.share{
	display: flex;
	flex-direction: row;
	justify-content: flex-end;
}	

.share-platform{
	width: 40px;
	height: 40px;
	border-radius: 20px;
	margin-left: 40px;
	background-image: url(../images/articles/sprite.svg);
	background-repeat: no-repeat; 
}


.share-vimeo{
	background-position: -180px 0;
}

.share-facebook{
	background-position: -220px 0;
}


.share-wechat{
	background-position: -260px 0;
}


.dropdown-menu{
	position: absolute;
	top: 40px;
	left: 0;
	/*width: 340px;*/
	box-sizing: border-box;
	/*padding-left: 10px;*/
	/*background-color: rgba(255,255,255,.98);*/
	z-index: 2;
	/*height: 274px;*/
	/*overflow: hidden;*/

	width: 100%;

	display: flex;
	flex-flow: column nowrap;
	font-size: 14px;
	font-weight: bold;
	line-height: 1;

	/*transition: all .5s cubic-bezier(0.4, 0, 0, 1.5);*/

	visibility: visible;
}

.dropdown-close .dropdown-menu{
	/*transform: translate3d(0,20%,0);*/
	/*perspective: 100px;*/
	/*opacity: 0;

	
	transform: scaleY(0);
	transform-origin: 0% 0%;*/
	/*height: 0;*/

	visibility: hidden;
}

.dropdown-item{
	/*padding: 20px 0 20px 10px;*/
	border-top: 1px solid rgb(230,230,230);
	background-color: rgba(255,255,255,.98);
	width: 100%;
	opacity: 1;
	transition: all .2s ease;
	/*box-sizing: border-box;*/
}

.dropdown-item:hover{
	background-color: #eeeeee;
}

.dropdown-close .dropdown-item{
	opacity: 0;
	transform: translate3d(0,-30%,0);
}

.dropdown-item a{
	color: #000;
	display: inline-block;
	width: 100%;
	box-sizing: border-box;
	padding: 20px 0 20px 10px;
}

.dropdown-item:first-child{
	border-top: none;
}


.dropdown-active{
	background-color: #ddd;
	pointer-events: none;
}

.empty-article{
	/*display: none;*/
	height: 0;
	opacity: 0;
	/*min-width: 340px;*/
	pointer-events: none;

	margin-top: 0;
}

/*.article-single:first-child .head-img,*/
/* .article-single, */
/*.article-single .head-img,*/
.specific-introduce,
.specific-title,
.filter-title,
.filter-table,
/* .read-more, */
.img-wrap,
.article
{
	transition: all .5s ease;
}

.chief-img{
	position: absolute;
	top: 0;
	left: 0;

	width: 100%;
	height: 100%;
	
	/*background-image: url(../images/articles/article.png);*/
	background-repeat: no-repeat;
	background-position: center center;
	background-size: cover;

	transition: all .5s ease;

	/* cilp bugs */
	opacity: 0;
}

.monochrome{
	opacity: 1;
}
.colorful{
	opacity: .8;
}

.head-img{
	transition: all .5s ease;
}

.article-single:first-child .head-img{
	width: 65.574%;
	padding-top: 31.148%;
}

/*.head-img:hover{
	transform: scale(.9);
}*/

.head-img:hover .chief-img{
	transform: scale(1.05);
}

.head-img:hover .monochrome{
	/*opacity: 0;*/
}
.head-img:hover .colorful{
	opacity: 1;
}

.fade-out{
	animation: fadeOut .5s forwards;
}

@keyframes fadeOut {
	0% {
		opacity: 1;
	}

	75%{
		opacity: 0;
		transform: translate3d(0,-50px,0);
	}

	100%{
		opacity: 0;
	}
}

.disappear{
	/*display: none;*/
	opacity: 0;
	animation: disappear .5s forwards;
}

@keyframes disappear {
	to{
		margin: 0;
		height: 0;
	}
}

.prompt-txt{
	visibility: hidden;
	opacity: 0;
	font-size: 16px;
	width: 100%;
	text-align: center;
	transition: all .5s ease;
	margin-top: 80px;
}

.show-prompt{
	visibility: visible;
	opacity: .6;
	transform: translate3d(0,-20px,0); 
}

@media screen and (max-width: 1300px){
	.article{
		padding: 0 20px;
	}
}


/* modify break point from 1025 to 1080 */
@media screen and (min-width: 1140px){ 
	.specific-introduce{
		width: 320px;
	}
}

@media screen and (min-width: 931px) and (max-width: 1140px){
	
	.article-single{
		max-width: none;
	}

	.specific-title,.specific-introduce{
		width: 270px;
	}
}

/*首行的样式*/

@media screen and (min-width: 415px) and (max-width: 930px){

	a.article-single:first-child{
		display: block;
		margin-left: 0;
	}

	.article-single:first-child .head-img{
		width: 100%;

		padding-top: 48.78%;

		transition: width .5s ease;
	}
	
	.article-single:first-child .head-side{
		padding-left: 0;
	}

	.article-single:first-child .article-detail{
		max-width: 640px;
	}

	.article-single:first-child .specific-title{
		width: 320px;
	}

	.article-single:first-child .specific-introduce{
		width: 400px;
	}
}

@media screen and (min-width: 740px) and (max-width: 930px){

	.specific-title,.specific-introduce{
		width: 206px;
	}

	.specific-title{
		font-size: 20px;
	}

	.specific-introduce{
		font-size: 16px;
	}
}


/*modify break point from 679 to 899*/

@media screen and (min-width: 440px) and (max-width: 739px) {

	.article-single:nth-child(3n){
		margin-left: 0;
		margin-right: 0;
	}

	.article-single:nth-child(2n - 1){
		margin-left: 40px;
	}

	.specific-title{
		width: 220px;
		font-size: 20px;
	}

	.specific-kind{
		font-size: 12px;
	}

	.specific-introduce{
		width: 240px;
		font-size: 14px;
	}
}

@media screen and (min-width: 440px) and (max-width: 560px){
	.specific-title,.specific-introduce{
		width: 180px;
	}

	.specific-title{
		font-size: 18px;
	}
}


@media screen and (max-width: 439px) {
	
	.filter{
		padding: 20px 30px;
	}

	.filter-title{
		font-size: 24px;
	}

	.filter-title .horizontal{
		margin-left: 20px;
		width: 80px;
		height: 13px;
	}

	.filter-table>p{
		padding: 0 0 20px 0;
	}

	.filter-table{
		padding-top: 40px;
	}
	
	.dropdown{
		margin-top: 20px;
	}

	.filter-table{
		width: 280px;
		font-size: 14px;
	}

	.search-category{
		margin-right: 20px;
	}

	.dropdown .pull-bar{
		margin-right: 0;
	}

	/*.article{
		padding: 0;
	}*/

	.article-single:first-child{
		margin-top: 40px;
		flex-wrap: wrap;
	}

	.article-single:first-child .head-img{
		width: 100%;
		height: 0;

		padding-top: 100%;
	}

	.article-list .article-single{
		width: 100%;
		margin-left: 0;
		margin-right: 0;

		max-width: none;
	}

	.article-single:first-child .head-side{
		margin-left: 0;
		padding-left: 0;
	}
}


@media screen and (max-width: 360px){
	.article-detail{
		max-width: 280px;
	}
	.specific-title{
		font-size: 24px;
	}
	.specific-introduce{
		font-size: 16px;
	}

	.filter-table{
		font-size: 12px;
	}
}