/*主体*/
.topic img{
    animation: myScale 10s 1s infinite;
}

.sector{
    display: flex;
    justify-content: space-between;
    height: 294px;
    width: 100%;
    margin: 0 -1px;
}
.sector li{
    padding: 30px;
    width: 255px;
    margin: 0 1px;
    background: url(../images/bg1.png) no-repeat;
}
.sector li:first-of-type{
    width: 352px;
}
.sector li:nth-of-type(2){
    background-image: url(../images/bg2.png);
}
.sector li:nth-of-type(3){
    background-image: url(../images/bg3.png);
}
.sector li:nth-of-type(4){
    width: 201px;
    background-image: url(../images/bg4.png);
}

.sector li:hover img{
    transform: rotateY(180deg);
}

.sector li h3{
    margin-top: 10px;
}
.sector li h3 a{
    color: #fff;
    font-size: 20px;
}

.sector li h3 a:hover{
    color: var(--blueColor);
}

.sector li>a{
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    margin-top: 9em;
    width: 89px;
    height: 30px;
    border-radius: 8px 8px 8px 8px;
    border: 1px solid rgba(255,255,255,0.4);
}
.sector li>a:hover{
    background: var(--blueColor);
    border-color: var(--blueColor);
}

main {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 809px;
    padding: 0 50px 0 110px;
    box-sizing: border-box;
    background: url(../images/subtract.png) no-repeat;
}
main h1{
    font-size: 27px;
    color: #FFFFFF;
    margin: 25px 0;
}
.tab{
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.tab ul {
    display: flex;
}
.tab ul li{
    color: #fff;
    font-size: 19px;
    cursor: pointer;
}
.tab ul li span{
    margin: 0 20px;
    font-weight: normal;
}
.tab ul li.on{
    font-weight: bold;
}
.tab div a{
    display: none;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #fff;
    width: 117px;
    height: 30px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.4);
}
.tab div a.on{
    display: inline-flex;
}
.tab div a:hover{
    background: var(--blueColor);
    border-color: var(--blueColor);
}

.context ul{
    display: none;
}
.context ul.on {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.context li{
    position: relative;
    width: 203px;
    height: 249px;
    margin: 10px 0;
    background: rgba(255,255,255,0.8);
    border-radius: 12px;
    overflow: hidden;
}

.context li .img{
    height: 115px;
}
.context li .txt{
    padding: 8px 15px;
}
.context li .txt h3{
    height: 4.5em;
    line-height: 1.5em;
}
.context li .txt h3 a{
    color: #000;
    font-size: 16px;
    font-weight: normal;
}
.context li .txt h3 a:hover{
    color: var(--blueColor);
    text-decoration: underline;
}
.context li .txt p{
    height: 4.5em;
    line-height: 1.5em;
    color: #999;
    font-size: 12px;
    margin: 2em 0 3.1em;
    display: none;
}
.context li .txt span{
    color: #666;
    display: flex;
    margin-top: 20px;
}
.context li:first-of-type{
    width: 427px;
}
.context li:nth-of-type(4) .img,
.context li:nth-of-type(6) .img{
    display: none;
}
.context li:nth-of-type(4) h3,
.context li:nth-of-type(6) h3{
    margin-top: 20px;
}
.context li:nth-of-type(4) p,
.context li:nth-of-type(6) p{
    display: block;
}

.context li:first-of-type .img{
    height: 100%;
}
.context li .text{
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    color: #fff;
    font-size: 16px;
    height: 132px;
    padding: 35px 20px 0;
    box-sizing: border-box;
    background: url(../images/rectangle.png) no-repeat center bottom;
}
.context li .text p{
    margin-top: 10px;
}
.context li .text p a{
    color: #fff;
    font-size: 18px;
}
.context li .text p a:hover{
    color: var(--blueColor);
    text-decoration: underline;
}

#slide{
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: -1;
}
#slide img{
    width: 100%;
    height: 100%;
}

@keyframes myScale {
    0%{
        opacity: 0;
        transform: scale(0);
    }
    50%{
        opacity: 1;
        transform: scale(1);
    }
}

@media screen and (min-width: 2560px) {

    /*body{*/
    /*    transform-origin: center top;*/
    /*    transform: scale(calc(2560/1920));*/
    /*}*/
    /*section{*/
    /*    height: 985px;*/
    /*}*/
}