header {
	position: fixed;
	top: 0px;
	width: 100%;
	height: 72px;
	z-index: 2;
	background: #ECF1FD;
	box-shadow: 0px 5px 16px 0px rgba(6, 38, 109, 0.14);
}

.nav-home {
	height: 72px;
}

.logo {
	float: left;
	width: 172px;
	height: 40px;
	margin-top: 15px;
	margin-right: 70px;
}

.logo img {
	width: 172px;
	height: 40px;
}

.nav-top {
	float: left;
	display: flex;
	height: 72px;
}

.nav-top ul {
	display: flex;
	align-items: center;
	height: 72px;
}

.nav-top ul li {
	float: left;
	font-size: 16px;
	margin-right: 40px;
	color: #020814;
}

.nav-top ul li a {
	color: #020814;
}

.trial {
	float: right;
	width: 152px;
	height: 72px;
	background: linear-gradient(115deg, #73aaff 0%, #0053ff 100%);
	font-size: 16px;
	color: #FFFFFF;
	line-height: 72px;
	text-align: center;
	cursor: pointer;
}

/* 主体 */
.title_img{
	width: 100%;
	height: 360px;
	background-image: url(../imgs/download/download@2x.png);
	background-size: cover;
	background-repeat: no-repeat;
	position: relative;
}
/* .title_img img{
	width: 100%;
		height: 360px;
} */
.download_title{
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	position: absolute;
	top: 30%;
	left: 30%;
}
.title_bg{
	font-size: 36px;
	font-weight: 400;
	color: #020814;
}
.desc{
	margin-top: 10px;
	width: 368px;
	font-size: 16px;
	font-weight: 400;
	color: #020814;
}
.download_ct{
	background-color: #fff;
	padding-top: 76px;
	padding-bottom: 100px;
}
.ct_title{
	font-size: 48px;
	font-weight: 400;
	color: #020814;
	text-align: center;
}
.support{
	color: #020814;
	font-size: 24px;
	font-weight: 400;
	text-align: center;
	margin-top: 30px;
}
.download_pic{
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 250px;
}
.download_item1 {
	text-align: center;
}

.download_item1:hover .download_item1_Img {
	display: none;
}

.download_item1 .download_item_Code {
	width: 214px;
	height: 214px;
	display: none;
}

.download_item1:hover .download_item_Code {
	display: block;
}
.download_item2 {
	text-align: center;
}

.download_item2:hover .download_item2_Img {
	display: none;
}

.download_item2 .download_item_Code {
	width: 214px;
	height: 214px;
	display: none;
}

.download_item2:hover .download_item_Code {
	display: block;
}
.download_item3 {
	text-align: center;
}

.download_item3:hover .download_item3_Img {
	display: none;
}

.download_item3 .download_item_Code {
	width: 214px;
	height: 214px;
	display: none;
}

.download_item3:hover .download_item_Code {
	display: block;
}
.download_item4 {
	text-align: center;
}

.download_item4:hover .download_item4_Img {
	display: none;
}

.download_item4 .download_item_Code {
	width: 214px;
	height: 214px;
	display: none;
}

.download_item4:hover .download_item_Code {
	display: block;
}
.download_item5 {
	text-align: center;
}
.download_item5:hover .download_item5_Img {
	display: none;
}
.download_item5 .download_item_Code {
	width: 214px;
	height: 214px;
	display: none;
}
.download_item5:hover .download_item_Code {
	display: block;
}


.download_item6 {
	text-align: center;
}
.download_item6:hover .download_item6_Img {
	display: none;
}

.download_item6 .download_item6_Code {
	width: 214px;
	height: 214px;
	display: none;
}

.download_item6:hover .download_item6_Code {
	display: block;
}
.img_title{
	font-size: 16px;
	font-weight: 400;
	color: #020814;
}
.center {
	width: 1280px;
	margin: 0 auto;
}
.subject {
	float: left;
	width: 100%;
	/* height: 674px; */
	background-color: #f3f6f9;
}

.subject_left {
	float: left;
	width: 500px;
	height: 500px;
}

.meet {
	margin-top: 212px;
}

.teach {
	margin-top: 16px;
}

/* 安卓，Os下载 */
.down {
	margin-top: 30px;
}

/* .down span{
    font-size: 18px;
    font-weight: 600;
}
.win p a{
    color: #ffffff;
}

.OS p a{
    color: #202020;
} */
.down .win,
.OS {
	float: left;
	width: 188px;
	height: 56px;
}

.win {
	/* color: #ffffff; */
	border-radius: 4px;
	cursor: pointer;
	/* background: #0fa574; */
}

.OS {
	/* color: #202020;
    background-color: #ffffff; */
	margin-left: 20px;
	cursor: pointer;
	border-radius: 4px;
}

/* 图片 */
/* .down .tupian{
    float: left;
    width: 56px;
    height: 56px;
} */

/* .win_b,.OS_b{
    float: left;
    margin-top: 5px;
    margin-left: 20px;
    
} */
.subject_right {
	float: right;
	width: 650px;
	height: 420px;
	margin-top: 132px;
}

/* 底部 */
.under {
	float: left;
	width: 100%;
	height: 64px;
	line-height: 64px;
	margin-top: 105px;
	background-color: #f3f6f9;
}

.under span {
	margin-left: 504px;
}