@charset "UTF-8";
body {
	overflow-x: hidden;
}
header {
	background: linear-gradient(0deg, #f5f5f5, #e8ebed);
}
header .header {
	display: flex;
	justify-content: space-between;
	width: 1200px;
	margin: 0 auto;
	font-size: 14px;
	font-family: SourceHanSansCN;
	font-weight: 400;
	color: #525354;
	line-height: 18px;
	padding-top: 7px;
	padding-bottom: 7px;
}
header .header .title-wrap {
	color: #525354;
}
header .header .title-wrap + .title-wrap {
	white-space: nowrap;
	position: relative;
}
header .header .title-wrap + .title-wrap::before {
	content: "｜";
	margin-left: 11px;
	margin-right: 7px;
}
header .header .title-wrap .title {
	display: inline;
	color: inherit;
}
header .header .title-wrap .title:hover {
	color: #242424;
}
header .header .left {
	display: flex;
}
header .header .right {
	display: flex;
}
header .header .right .title-wrap:nth-child(1) .title::before {
	height: 16px;
	content: url("../images/icon-date.png");
}
header .header .right .title-wrap:nth-child(2) .title::before {
	content: url("../images/icon-say.png");
	height: 15px;
}
header .header .right .title-wrap .title {
	position: relative;
	padding-left: 22px;
}
header .header .right .title-wrap .title::before {
	position: absolute;
	top: 50%;
	-webkit-transform: translateY(-50%);
	-ms-transform: translateY(-50%);
	transform: translateY(-50%);
	left: 0;
}

.nav {
	box-sizing: border-box;
	padding-top: 0;
	position: relative;
	z-index: 101;
	display: flex;
	width: 1200px;
	margin: 6px auto 0;
	align-items: center;
	height: 94px;
	justify-content: space-between;
	padding-right: 18px;
}
.nav * {
	box-sizing: border-box;
}
.nav .logo {
	width: 155px;
}
.nav .right {
	display: flex;
	height: 100%;
}
.nav .right .item:hover .nav-title {
	/* border-bottom-color: #d93b22; */
	color: #ff3e2d;
}
.nav .right .item:hover::before {
	content: "";
	width: 100%;
	height: 3px;
	position: absolute;
	left: 0;
	top: 75px;
	background-color: #d93b22;
}
.nav .right .item:hover.drop .nav-title::after {
	transform: rotate(180deg);
}
.nav .right .item:hover.drop .drop-wrap {
	height: 111px;
	border: 1px solid #d6d6d6;
	box-shadow: 0px 4px 8px 0px rgba(135, 135, 135, 0.24);
}
.nav .right .item {
	padding-top: 33px;
	height: 100%;
	position: relative;
}
.nav .right .item.drop {
	position: relative;
	cursor: pointer;
}
.nav .right .item.drop .nav-title::after {
	position: relative;
	top: -3px;
	margin-left: 3px;
	content: "";
	display: inline-block;
	width: 9px;
	height: 5px;
	background-image: url("../images/icon-arrow.png");
	transition: transform 0.3s;
}
.nav .right .item.drop .drop-wrap {
	width: 100vw;
	transition: height 0.3s;
	height: 0;
	overflow: hidden;
	position: absolute;
	bottom: 4px;
	-webkit-transform: translateY(100%);
	-ms-transform: translateY(100%);
	transform: translateY(100%);
	background: #ffffff;
}
.nav .right .item.drop .drop-wrap .drop-parent {
	width: 1200px;
	margin: 0 auto;
	display: flex;
	height: 111px;
	align-items: center;
	justify-content: space-between;
}
.nav .right .item.drop .drop-wrap .drop-parent .drop-item {
	text-align: center;
	padding-top: 10px;
	width: 99px;
	/* height: 81px; */
	transition: background-color 0.3s;
}
.nav .right .item.drop .drop-wrap .drop-parent .drop-item:hover {
	background-color: rgba(247, 247, 247, 0.53);
	border-radius: 10px;
}
.nav .right .item.drop .drop-wrap .drop-parent .drop-item .course-title {
	color: #525354;
	font-size: 14px;
	font-family: SourceHanSansCN;
	font-weight: 400;
	color: #525354;
	line-height: 18px;
	padding-top: 16px;
	padding-bottom: 11px;
}
.nav .right .item .nav-title {
	height: 100%;
	font-size: 16px;
	font-family: SourceHanSansCN;
	font-weight: bold;
	line-height: 26px;
	padding: 23px 15px 20px;
	display: inline;
	/* border-bottom: 3px solid transparent; */
	color: #424242;
}
.nav-dark .nav .right .item .nav-title {
	color: rgba(255, 255, 255, 0.7);
}