/*banner*/
/*------------------------------------------*/
.top-banner {
	position: relative;
	width: 100%;
	padding-bottom: 21.9%;
	background-image: url('../images/learning-resource/banner.png');
	background-size: cover;
	background-position: center;
}
.top-banner .banner-title {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	-moz-transform: translate(-50%, -50%);
	-webkit-transform: translate(-50%, -50%);
	color: #fff;
	text-align: center;
    line-height: normal;
}
@media only screen and (max-width: 1024px) {
	.top-banner {
		padding-bottom: 48%;
	background-image: url('../images/learning-resource/mobile-banner.png');
	}
	.top-banner .banner-title .zh-banner-title {
		margin-bottom: 8px;
	}
	.quotation-part2 .button-common {
		width: 164px;
		height: 36px;
	}
}
/*------------------------------------------*/
/*banner end*/



/*主体*/
/*------------------------------------------*/
.learn-tabs {
	display: flex;
	display: -ms-flexbox;
	display: -webkit-flex;
	border: 0;
	background-color: #f6f6f6;
}
.learn-tabs > li {
	flex: 1;
	-webkit-flex: 1;
	-ms-flex: 1;
	text-align: center;
}
.learn-tabs > li > a {
	font-family: "Noto Sans";
    font-weight: 700;
	font-size: 28px;
    line-height: normal;
	padding-top: 50px;
	padding-bottom: 40px;
}
.learn-tabs > li,
.learn-tabs > li > a,
.learn-tabs > li.active > a,
.learn-tabs > li.active > a:hover,
.learn-tabs > li.active > a:focus {
	border: 0;
	margin-right: 0;
	background-color: transparent;
	color: #000000;
}
.learn-tabs > li.active > a:hover,
.learn-tabs > li.active > a:focus {
	color: #004898;
}
.learn-tabs > li > a:hover,
.learn-tabs > li > a:focus {
	background-color: transparent;
	color: #004898;
}
.learn-tabs > li.active {
	border-bottom: 4px solid #004898;
}
.learn-tabs > li.active > a {
	color: #004898;
}
.learn-pane .learn-pane-title {
	text-align: center;
    line-height: normal;
	color: #000;
	font-size: 50px;
}
.learn-pane .learn-pane-desc {
	text-align: center;
    line-height: normal;
	color: #333;
	padding-left: 19%;
	padding-right: 19%;
}

/*折叠样式修改*/
.learn-content .panel-group {
	width: 100%;
	margin-bottom: 0;
}
.learn-content .panel-default {
	border: none;
}
.learn-content .panel-default:last-child {
	margin-bottom: 0;
}
.learn-content .panel-group .panel + .panel {
	border-radius: 0;
	margin-top: 0;
}
.learn-content .panel-default > .panel-heading {
	position: relative;
	display: block;
	text-align: center;
	padding-top: 70px;
	padding-bottom: 70px;
	background-color: #f6f6f6;
	color: #004898;
}
.learn-content .panel-default > .panel-heading .icon--8 {
	position: absolute;
	top: 50%;
	right: 4%;
	transform: translateY(-50%) rotate(90deg);
	-ms-transform: translateY(-50%) rotate(90deg);
	-moz-transform: translateY(-50%) rotate(90deg);
	-webkit-transform: translateY(-50%) rotate(90deg);
	transition: all .4s;
	-ms-transition: all .4s;
	-moz-transition: all .4s;
	-webkit-transition: all .4s;
	font-size: 36px;
	font-weight: bold;
}
.learn-content .panel-default .panel-heading[aria-expanded='true'] .icon--8 {
	transform: translateY(-50%) rotate(-90deg);
	-moz-transform: translateY(-50%) rotate(-90deg);
	-ms-transform: translateY(-50%) rotate(-90deg);
	-webkit-transform: translateY(-50%) rotate(-90deg);
}
.learn-content .panel-default > .panel-heading .icon--8:before {
	color: #004898;
}
.learn-content .panel-default > .panel-heading + .panel-collapse > .panel-body,
.learn-content .panel-default > .panel-heading + .panel-course > .panel-body {
	background-color: #f6f6f6;
	border-top: none;
}
.card-items {
	display: flex;
	display: -ms-flexbox;
	display: -webkit-flex;
	flex-wrap: wrap;
	-ms-flex-wrap: wrap;
	-webkit-flex-wrap: wrap;
	padding-top: 0;
}
.card-items .card-item {
	width: calc((100% - 17px*3)/4);
	margin-right: 16px;
	margin-bottom: 16px;
	background-color: #fff;
}
.model-content.card-items .card-item,
.skill-content.card-items .card-item {
	background-color: #f6f6f6;
}
.model-content.card-items .card-item .item-info,
.skill-content.card-items .card-item .item-info {
	background-color: transparent;
}
.card-items div.card-item {
	background-color: transparent;
	/*height: 0;*/
}
.card-items .card-item:nth-child(4n) {
	margin-right: 0;
}
.card-items .card-item .item-img {
	position: relative;
}
.card-items .card-item .item-img .item-main-img {
	display: block;
	width: 100%;
}
.card-items .card-item .item-img .item-icon-download {
	position: absolute;
	display: block;
	top: 0;
	right: 0;
	width: 50px;
	height: 50px;
	/*background-color: #fff;*/
	background-image: url('http://surfmill.ru/images/common/download1.png');
	background-size: cover;
	background-repeat: no-repeat;
}
.card-items .card-item:hover .item-img .item-icon-download {
	background-image: url('http://surfmill.ru/images/common/download2.png');
	/*background-color: #ccc;*/
}
.card-items .card-item .item-img .model-download {
	background-image: url('http://surfmill.ru/images/common/model1.png');
	background-size: cover;
	background-repeat: no-repeat;
}
.card-items .card-item:hover .item-img .model-download {
	background-image: url('http://surfmill.ru/images/common/model2.png');
}
.card-items .card-item .item-img .item-icon-play {
	position: absolute;
	top: 50%;
	left: 50%;
	width: 50px;
	height: 50px;
	transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	-moz-transform: translate(-50%, -50%);
	-webkit-transform: translate(-50%, -50%);
	/*background-color: #fff;*/
	background-image: url('../images/common/play1.png');
	background-size: cover;
	background-repeat: no-repeat;
}
.card-items .card-item:hover .item-img .item-icon-play {
	background-image: url('../images/common/play2.png');
	/*background-color: red;*/
}
.card-items .card-item .item-info {
	text-align: center;
	color: #333;
	padding: 0 15px;
}
.card-items .card-item .item-info p {
    line-height: normal;
	padding-left: 15px;
	padding-right: 15px;
}
.learn-btn{
	width: fit-content;
	margin-left: auto;
	margin-right: auto;
}

.subtitle{
	font-family: "Noto Sans";
    font-weight: 700;
	font-size: 40px;
    line-height: normal;
	color: #004898;
	text-align: center;
}
@media only screen and (max-width: 1919px) {
	.learn-content .panel-default > .panel-heading {
		padding-top: calc(70px * 0.83);
		padding-bottom: calc(70px * 0.83);
	}
	.learn-content .panel-default > .panel-heading .icon--8 {
		font-size: 34px;
	}
}
@media only screen and (max-width: 1599px) {
	.learn-pane .learn-pane-title {
		font-size: 40px;
	}
	.learn-tabs > li > a {
		font-size: 24px;
		padding-top: 40px;
		padding-bottom: 30px;
	}
	.learn-content .panel-default > .panel-heading {
		padding-top: calc(70px * 0.75);
		padding-bottom: calc(70px * 0.75);
	}
	.learn-content .panel-default > .panel-heading .icon--8 {
		font-size: 30px;
	}
	.subtitle{
		font-size: 30px;
	}
}
@media only screen and (max-width: 1299px) {
	.learn-pane .learn-pane-title {
		font-size: 36px;
	}
	.learn-tabs > li > a {
		font-size: 22px;
	}
	.subtitle{
		font-size: 28px;
	}
}
@media only screen and (max-width: 1199px) {
	.learn-content .panel-default > .panel-heading {
		padding-top: calc(70px * 0.68);
		padding-bottom: calc(70px * 0.68);
	}
	.learn-content .panel-default > .panel-heading .icon--8 {
		font-size: 24px;
	}
}
@media only screen and (max-width: 1024px) {
	.learn-tabs {
		font-size: 18px;
	}
	.learn-tabs > li > a {
		padding-top: 30px;
		padding-bottom: 30px;
		font-size: 20px;
	}
	.learn-tabs > li.active {
		border-bottom: 2px solid #004898;
	}
	.learn-pane .learn-pane-title {
		font-size: 28px;
	}
	.learn-pane .learn-pane-desc {
	    padding-left: 3.8%;
	    padding-right: 3.8%;
	}
	.learn-content .panel-default > .panel-heading {
		padding-top: calc(30px * 1.2);
		padding-bottom: calc(30px * 1.2);
		text-align: left;
	}
	.card-items {
		display: block;
	}
	.card-items .card-item {
		display: block;
		width: 100%;
	}
	.card-items .card-item .item-info p {
		font-size: 20px;
		padding-left: 10px;
		padding-right: 10px;
	}
	.learn-pane .learn-pane-desc {
        line-height: normal;
	}
	.subtitle{
		font-size: 22px;
	}
}
@media only screen and (max-width: 540px) {
	.learn-content .panel-default > .panel-heading {
		padding-top: 30px;
		padding-bottom: 30px;
		padding-right: 40px;
	}
	.card-items .card-item .item-info p {
		font-size: 18px;
	}
	.learn-content .panel-default > .panel-heading .icon--8 {
		font-size: 20px;
	}
	.learn-tabs > li > a {
		font-size: 19px;
	}
}
@media only screen and (max-width: 450px) {
	.learn-pane .learn-pane-title {
		font-size: 24px;
	}
	.learn-content .panel-default > .panel-heading h2 {
        line-height: normal;
	}
	.learn-tabs > li > a {
    	padding: 20px 0;
    	font-size: 18px;
	}
	.subtitle{
		font-size: 20px;
	}
}
@media only screen and (max-width: 412px) {
	.subtitle{
        line-height: normal;
	}
}
@media only screen and (max-width: 370px) {
	.learn-tabs > li > a {
    	font-size: 16px;
	}
	.learn-pane .learn-pane-title {
		font-size: 18px;
	}
	h2 {
		font-size: 16px;
	}
	.learn-content .panel-default > .panel-heading .icon--8 {
		font-size: 16px;
	}
	.card-items .card-item .item-info p {
		font-size: 16px;
	}
	.p-b-24-mobile {
		padding-bottom: calc(24px * 0.83);
	}
	.p-t-24-mobile {
		padding-top: calc(24px * 0.83);
	}
}
/*------------------------------------------*/
/*主体 end*/