* {
    margin: 0;
    padding: 0;
}

a{
    color: white;
    outline: none;
    text-decoration: none;


}

.swiper{
    width: 100%;
    height: 100%;
    z-index: 9998;
}


body {
    width: 1920px;
    height: 700px;
    background-size: 100% 100%;
}

.dd {
    width: 1920px;
    height: 700px;
    background: radial-gradient(circle, rgba(217, 217, 217, 0) 0%, rgba(109, 109, 109, 0.44) 100%);
}

.tt {
    width: 1920px;
    height: 72px;
    background: linear-gradient(180deg, rgba(155, 155, 155,0.4) 0%, rgba(210, 218, 225,0.4) 100%);
    opacity: 1;
    position: absolute;
    z-index: 9999;
}

.logo {
    position: relative;
    top: 21px;
    left: 128px;
}


.daoh {
    font-size: 22px;
    font-family: Microsoft YaHei;
    font-weight: bold;
    line-height: 33px;
    color: #FFFFFF;
    opacity: 1;
    display: flex;
    position: relative;
    left: 250px;
    top: 0;
    list-style: none;
    width: 1000px;
    height: 72px;
}

.daoh li {
    width: 25%;
    text-align: center;
    height: 72px;
    line-height: 72px;
}

.daoh li div {
    margin: 0 auto;
}

.daoh li div:hover {
    cursor: pointer;
    border-bottom: 2px solid #000000;
}

.xlx {
    list-style: none;
    height: 154px;
    color: #c9c9c9;
    display: none;
}

.xlx a{
    color: #eaeaea;
}

.xlx li {
    width: 120px;
    background: rgba(45, 69, 113, 0.35);
    opacity: 1;
    margin: 0 auto;
    font-size: 14px;
}

#sy :hover + #sys {
    display: block;

}



#sys:hover {
    display: block;
}

#sys li:hover{
    font-size: 18px;
    color: white;
}

#gy :hover + #gys {
    display: block;

}

#gys:hover {
    display: block;
}

#gys li:hover {
    font-size: 18px;
    color: white;
}

#fw :hover + #fws {
    display: block;

}

#fws:hover {
    display: block;
}

#fws li:hover {
    font-size: 18px;
    color: white;
}


#hz :hover + #hzs {
    display: block;

}

#hzs:hover {
    display: block;
}

#hzs li:hover {
    font-size: 18px;
    color: white;
}