.page-title {
	position:relative;
	margin:10px 0 15px
}
.page-title h1 {
	line-height:32px;
	font-size:24px;
	font-weight:bold
;
	text-align: left;
	margin-bottom: 20px;
	margin-top: 50px;
}
.page-title .page-title-pv {
	position:absolute;
	top:13px;
	right:0;
	color:#999
}
.page-play-container {
	overflow:hidden;
	width: 1140px;
	height: 534px;
	margin-bottom: 15px;
	background:#252525
}
.page-player {
	float:left;
	width:720px
}
.page-play-side {
	float:left;
	width: 330px;
	color:#ccc
}
.page-play-side a {
	color:#ccc
;
	line-height: 18px;
}
.page-play-side h3 {
	margin:1px 0 0 15px;
	line-height:40px;
	font-size:16px
}
.page-recommend li {
	width: 100%;
	height: 90px;
	padding: 14px 10px 14px 15px;
	border-top:1px solid #444
















}
.page-recommend li:hover {
	background:#4f4f4f
}
.page-recommend li:hover .page-image-mask {
	opacity:0.9
}
.page-recommend li .page-recommend-image {
	float:left;
	width:92px;
	height:58px;
	margin-right:13px
}
.page-recommend li .page-recommend-image .page-image-mask {
	background-size:120px 74px;
	background-position:center 0;
	background-color:rgba(232,232,232,0.9)
}
.page-recommend li .page-recommend-image .page-image-mask b {
	top:50%
}
.page-recommend li .page-image-container {
	position:relative;
	overflow:hidden;
	display:block;
	width:92px;
	height:58px;
	background-size:cover;
	background-repeat:no-repeat;
	background-position:center
}
.page-recommend li .page-image-mask {
	position:absolute;
	width:92px;
	height:58px;
	background-repeat:no-repeat;
	background-position:center;
	background-color:rgba(232,232,232,0.95)
}
.page-recommend li .page-image-mask b {
	display:block;
	position:absolute;
	width:30px;
	height:30px;
	border-radius:15px;
	top:40%;
	left:50%;
	margin-top:-15px;
	margin-left:-15px;
	background:rgba(255,255,255,0.8)
}
.page-recommend li .page-image-mask i {
	position:absolute;
	width:0;
	height:0;
	top:50%;
	left:48%;
	margin-top:-5px;
	margin-left:-1.66667px;
	border-style:solid;
	border-width:5px 0 5px 8px;
	border-color:transparent transparent transparent rgba(0,0,0,0.7)
}
.page-recommend li .cover-style-1 .page-teaching-title {
	background:#f3a000
}
.page-recommend li .cover-style-1 .page-image-mask b i {
	border-color:transparent transparent transparent #f3a000
}
.page-recommend li .cover-style-2 .page-teaching-title {
	background:#00ca94
}
.page-recommend li .cover-style-2 .page-image-mask b i {
	border-color:transparent transparent transparent #00ca94
}
.page-recommend li .cover-style-3 .page-teaching-title {
	background:#3ab2e9
}
.page-recommend li .cover-style-3 .page-image-mask b i {
	border-color:transparent transparent transparent #3ab2e9
}
.page-recommend li .page-recommend-title {
	overflow:hidden;
	max-height: 38px;
	_height:36px;
	margin-bottom:5px;
	font-size:14px









;
	line-height: 18px;
}
.page-recommend li .page-recommend-pv {
	color:#999
;
	font-size: 12px;
}
.page-main-inner {
	float:left;
	width:680px;
	margin-right:40px
}
.page-main-inner h2 {
	margin-bottom:30px;
	border-bottom:2px solid #ccc;
	font-size:24px;
	line-height:48px
}
.page-teaching {
	margin-bottom:25px
}
.page-teaching-content {
	padding:0 15px;
	font-size:14px;
	line-height:24px
}
.page-connect-teaching {
	overflow:hidden;
	width:680px
}
.page-connect-teaching ul {
	width:710px;
	padding:0 15px
}
.page-connect-teaching li {
	float:left;
	width:190px;
	margin-right:40px;
	margin-bottom:20px
}
.page-connect-teaching li p {
	height:18px;
	overflow:hidden;
	margin-bottom:4px
}
.page-connect-teaching li .page-image-mask {
	-webkit-transition:.3s all ease-in-out;
	-moz-transition:.3s all ease-in-out;
	transition:.3s all ease-in-out
}
.page-connect-teaching li:hover .page-image-mask {
	opacity:0.9;
	-webkit-transition:.3s all ease-in-out;
	-moz-transition:.3s all ease-in-out;
	transition:.3s all ease-in-out
}
.page-connect-teaching li:hover .page-teaching-title {
	bottom:0;
	-webkit-transition:.3s all ease-in-out;
	-moz-transition:.3s all ease-in-out;
	transition:.3s all ease-in-out
}
.page-connect-teaching .page-image-container {
	position:relative;
	overflow:hidden;
	display:block;
	width:190px;
	height:130px;
	background-size:cover;
	background-repeat:no-repeat;
	background-position:center
}
.page-connect-teaching .page-image-mask {
	position:absolute;
	width:190px;
	height:130px;
	background-repeat:no-repeat;
	background-position:center;
	background-color:rgba(232,232,232,0.95)
}
.page-connect-teaching .page-image-mask b {
	display:block;
	position:absolute;
	width:44px;
	height:44px;
	border-radius:22px;
	top:40%;
	left:50%;
	margin-top:-22px;
	margin-left:-22px;
	background:rgba(255,255,255,0.8)
}
.page-connect-teaching .page-image-mask i {
	position:absolute;
	width:0;
	height:0;
	top:50%;
	left:48%;
	margin-top:-7px;
	margin-left:-2.33333px;
	border-style:solid;
	border-width:7px 0 7px 12px;
	border-color:transparent transparent transparent rgba(0,0,0,0.7)
}
.page-connect-teaching .cover-style-1 .page-teaching-title {
	background:#f3a000
}
.page-connect-teaching .cover-style-1 .page-image-mask b i {
	border-color:transparent transparent transparent #f3a000
}
.page-connect-teaching .cover-style-2 .page-teaching-title {
	background:#00ca94
}
.page-connect-teaching .cover-style-2 .page-image-mask b i {
	border-color:transparent transparent transparent #00ca94
}
.page-connect-teaching .cover-style-3 .page-teaching-title {
	background:#3ab2e9
}
.page-connect-teaching .cover-style-3 .page-image-mask b i {
	border-color:transparent transparent transparent #3ab2e9
}
.page-connect-teaching .page-teaching-title {
	position:absolute;
	width:170px;
	height:40px;
	padding:5px 10px;
	background:rgba(0,0,0,0.4);
	bottom:-19px;
	-webkit-transition:.3s all ease-in-out;
	-moz-transition:.3s all ease-in-out;
	transition:.3s all ease-in-out
}
.page-connect-teaching .page-teaching-title b {
	width:170px;
	overflow:hidden;
	display:block;
	margin-bottom:2px;
	white-space:nowrap;
	text-overflow:ellipsis;
	font-size:14px;
	color:#fff;
	line-height:22px
}
.page-connect-teaching .page-teaching-title i {
	display:block;
	color:#eee
}
.page-main-side {
	float:left;
	width:280px
}
.page-main-side h2 {
	border-bottom:2px solid #999;
	font-size:24px;
	line-height:48px
}
.page-main-side .page-lecturer {
	padding:30px 15px;
	background:#fff
}
.page-main-side .page-lecturer-card {
	margin-bottom:15px
}
.page-main-side .page-lecturer-card .page-lecturer-avatar {
	float:left;
	margin-right:15px;
	width:68px;
	height:68px;
	background:#eee
}
.page-main-side .page-lecturer-card .page-lecturer-avatar a,.page-main-side .page-lecturer-card .page-lecturer-avatar span {
	overflow:hidden;
	display:block;
	width:68px;
	height:68px;
	background-size:cover;
	background-repeat:no-repeat;
	background-position:center
}
.page-main-side .page-lecturer-card .page-lecturer-name {
	overflow:hidden;
	height:30px;
	margin:4px 0;
	font-size:16px;
	line-height:30px
}
.page-main-side .page-lecturer-card .page-lecturer-title {
	overflow:hidden;
	height:20px
}
.page-main-side .page-lecturer-desc {
	color:#999;
	line-height:20px
}


.page-content{
width: 1140px;
margin:0 auto;

}.n12 {
	background-color: #F3F3F3;
	border-top-width: 1px;
	border-top-style: solid;
	border-top-color: #D9D9D9;
}
.f18 {
	font-size: 18px;
}

.info_news{float:left;display:inline;margin-right:25px;margin-bottom:5px;white-space:nowrap; font-size:14px;}

.info_tags{font-size:14px;}

.btn_tag{ margin-right:10px; display:inline-block;height:18px;line-height:16px;margin-bottom:5px;padding:0 10px;overflow:hidden;vertical-align:middle;border:1px solid #BFBFBF;background-color:#FFF}
.btn_tag{line-height:normal}
.btn_tag:hover{text-decoration:none;color:#fff;background-color:#ff7e0c;border-color:#ff7e0c;cursor:pointer}.a152 {
	margin-right: 12px;
}