.Shengd{
    width: 100%;
    height: 2844px;
    margin: 0 auto;
    overflow: hidden;
    background: url(../img/thy24sd_hdbg1.jpg) top center no-repeat;
    position: relative;
    padding-top: 1px;
    display: none;
}
.Navhy_ula{
	max-width:1920px;
	height: 72px;
	display: flex;
	justify-content: center;
	align-items: center;
	position: fixed;
	top: 0;
	left: 0;right: 0;
	margin: auto;
	z-index: 5;
	background: url(../img/thy23sd_dhbg.png) no-repeat;
}
.Navhy_ula li{
	padding: 0 20px;
	height:26px;
	border-left: 2px solid #ffffff;
	font-size: 24px;
	color: #ffffff;
	cursor: pointer;
}
.Navhy_ula li:hover{color: #fff;}
.Navhy_ula li:nth-child(1){border: none;}
.tf_logo {
    position: absolute;
    top: 94px;
    left: 50%;
    margin-left: -90px;
    z-index: 2;
}
.video_boxas{
    margin-left: 50%;
    height: 1080px;
    width: 1920px;
    transform: translate(-50%);
    overflow: hidden;
}
.video_box {
    position: absolute;
    left: 50%;
    top: 0px;
    height: 1080px;
    width: 1920px;
    transform: translate(-50%);
    overflow: hidden;
}
.xygqbox_zct {
    position: absolute;
    left: 50%;
    transform: translate(-50%);
    top: 913px;
}
.Sdneir{
	width: 1400px;
    margin: 0 auto;
    margin-top: 1094px;
    position: relative;
    /*overflow: hidden;*/
    height: 1650px;
}
.Sdneir_diva{
	display: none;
	width: 1400px;
	height: 1650px;
}
.Chunjie_bta {
    display: block;
    margin: 0 auto;
}
.Sdneir_divb{
	width: 1400px;
	height: 1450px;
	text-align: center;
	font-size: 18px;
	color: #ffffff;
	line-height: 40px;
}
.Sdneir_divb p{font-size: 24px;color: #f4d992;margin-top: 25px;}
.Sdneir_divb img{display: block;margin: 30px auto;}