.datu
{
    width: 100%;
}
.all1
{
    background-color:rgb(233,248,255);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    height: 4075px;

    position: relative;
}
.all2
{
    display: block;
    position: relative;
    width: 1690.5px;
    height: 3088px;
    margin: 0 auto;
}
.mulu
{
    position: relative;
    display: inline-block;
    margin: 0 auto;
    background-repeat: no-repeat;
}
.muluhezi_1
{
    margin: 0px auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    box-sizing: border-box;
    height: 100px;
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
}
.muluhezi_2
{
    height:100px;
    width: 193px;
    color: white;
    font-size:50px;
    text-align: center;
    font-family: hyjt;
    line-height: 100px;
    margin-left: 20px;
}
.muluhezi_3
{
    height:100px;
    width: 200px;
    font-size:50px;
    text-align: center;
    font-family: hyjt;
    line-height: 100px;
    margin-right: 20px;
    color: white;

}
.a
{
    color: white;
    font-display: auto;
    transition: all .3s ease;
}
.a:hover
{
    transform: translateY(-1px);
     text-shadow: 5px 5px 5px rgba(0,0,0,.45);
}
.yanjiu
{
    position: relative;
    display: inline-block;
    margin: 0 auto;
    background-repeat: no-repeat;
}
.yanjiuhezi_1
{

    margin-top: 48px;
    margin-right: 48px;
    margin-left: 48px;
    position:relative;
}
.yanjiuhezi_2
{

    width: 850px;
    height: 400px;
    position:absolute;
    left: 470px;
    top: 50px;
}
.xieru
{

    height: 100px;
    width: 94%;
    font-size: 70px;
    font-family: STXinwei;
    vertical-align: middle;
    line-height: 110px;
    margin-left: 50px;
    color: rgb(0, 0, 0);
    font-display: auto;
    transition: all .3s ease;
    position: absolute;
}
.xieru :hover
{
    transform: translateY(-1px);
    text-shadow: 5px 5px 5px rgba(0,0,0,.45);
}


.yuan
{
    margin-top: 30px;
    position: absolute;
    width: 45px;/* 设置宽 */
	height: 45px;/* 设置高 */
	border-radius: 40px;/* 设置为圆角 四周圆40px 可调  越小越接近直角 */
	border: 2px solid rgb(0, 73, 135);/* 设置边框 2像素  直线 红色 */
    background-color: rgb(0, 73, 135);
    -webkit-transition:  all .3s;/* 设置渐变  第一个值没有特殊要求就设置为all  第二个值为渐变时间0-1 小数时0可省略 可简写为 [.数字]  越大渐变的动画越明显*/
}

.tongyong
{

    height: 100px;
    width: 100%;
    font-size: 70px;
    font-family: STXinwei;
    vertical-align: middle;
    line-height: 110px;
    position: absolute;
}
.b
{
    color: rgb(0, 0, 0);
    font-display: auto;
    transition: all .3s ease;
}
.b:hover
{
    transform: translateY(-1px);
     text-shadow: 5px 5px 5px rgba(0,0,0,.45);
}
.xieru:hover+.yuan
{
    background-color: rgb(43, 136, 215);/* 悬停时 修改背景色 */
	color: #FFFFFF;/* 悬停时文字颜色设为白色 */
    -webkit-box-shadow: 3px 3px 6px #666;
    -moz-box-shadow: 3px 3px 6px #666;
    box-shadow: 3px 3px 6px #666;
}
.chengjin
{
    position: relative;
    display: inline-block;
    margin: 0 auto;
    background-repeat: no-repeat;
    margin-left: 48px;
    margin-top: 48px;
    margin-right: 48px;
}
.chengjinhezi_1
{

    width: 620px;
    height: 450px;
    position:absolute;
    left: 50px;
    top: 220px;
}
.chengjinhezi_2
{

    width: 620px;
    height: 450px;
    position:absolute;
    left: 920px;
    top: 220px;
}
.jingdian
{
    position: relative;
    display: inline-block;
    margin: 0 auto;
    background-repeat: no-repeat;

}
.jingdianhezi_1
{

    width: 921px;
    height: 450px;
    position: absolute;
    left: 141px;
    top: 258px
}
.renwu
{
    position: relative;
    display: inline-block;
    margin: 0 auto;
    background-repeat: no-repeat;

}
.renwuhezi_1
{

    width: 620px;
    height: 400px;
    position:absolute;
    left: 520px;
    top: 150px;
}
.wenwu
{
    position: relative;
    display: inline-block;
    margin: 0 auto;
    background-repeat: no-repeat;

}
.wenwuhezi_1
{

    width: 780px;
    height: 400px;
    position:absolute;
    left: 230px;
    top: 270px;
}