.tit-nav-li:nth-child(1) {
    background-color: #638df9;
}

.tit-nav-li:nth-child(1) a {
    color: white;
}


/*banner---------------------*/

.banner {
    width: 100%;
    height: 720px;
    background-color: white;
    margin-bottom: 50px;
    overflow: hidden;
}

.swiper-container {
    width: 100%;
    height: 100%;
}

.swiper-slide {
    height: 100%; //这里是终点
    width: 100%;
    position: relative;
    overflow: hidden;
    text-align: center;
    font-size: 18px;
    background: #fff;
    /* Center slide text vertically */
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
}

.swiper-slide h4 {
    position: absolute;
    top: 50px;
    left: 50px;
    width: 500px;
    height: 60px;
    font-size: 72px;
    font-weight: 300;
    color: white;
    font-family: 'YaHei';
    letter-spacing: 10px;
}

.swiper-slide img {
    width: 100%;
    height: 100%;
}


/*product---------------------*/

.prod {
    width: 90%;
    margin: auto;
}

.prod-tit,
.coop-tit {
    position: relative;
    width: 500px;
    height: 100px;
    margin-bottom: 40px;
}

.prod-tit-one,
.coop-tit-one {
    float: left;
    width: 200px;
    height: 60px;
    line-height: 60px;
    text-align: left;
    font-size: 30px;
    color: black;
    margin-left: 50px;
    border: 3px solid #96d7f7;
}

.prod-tit-two {
    position: absolute;
    top: 45px;
    left: 200px;
    width: 120px;
    height: 40px;
    line-height: 40px;
    font-size: 24px;
    color: black;
    background-color: white;
}

.coop-tit-two {
    position: absolute;
    top: 45px;
    left: 200px;
    width: 250px;
    height: 40px;
    line-height: 40px;
    font-size: 24px;
    color: black;
    background-color: white;
}

.prod-show {
    /*width: 1440px;*/
    width: 90%;
    margin: 0 auto;
    margin-bottom: 30px;
}

@media (min-width:480px) {
    .show-box {
        column-count: 2;
        column-gap: 10px;
    }
}

@media (min-width:960px) {
    .show-box {
        column-count: 3;
        column-gap: 10px;
    }
}

@media (min-width:1200px) {
    .show-box {
        column-count: 4;
        column-gap: 10px;
    }
}

@media (min-width:1660px) {
    .show-box {
        column-count: 5;
        column-gap: 10px;
    }
}

.show-kid {
    break-inside: avoid;
    box-sizing: border-box;
    padding: 10px;
    border: 1px solid #ccc;
    margin-bottom: 10px;
}

.kid-pic {
    margin-bottom: 10px;
}

.kid-pic img {
    width: 100%;
}

.kid-cont h4 {
    width: 100%;
    text-align: center;
    line-height: 35px;
    font-size: 24px;
}

.kid-cont a:hover {
    color: black;
}

.pro-btn,
.coop-btn {
    width: 200px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    font-size: 20px;
    font-weight: 500;
    margin: 0 auto;
    margin-bottom: 100px;
    /*margin-top: 50px;*/
    border: 2px solid #96d7f7;
    border-radius: 10px;
    box-shadow: 0 4px 10px #bbb;
}

.pro-btn a,
.coop-btn a {
    color: #96d7f7;
}


/*co-operation---------------------*/

.coop-show {
    width: 90%;
    margin: 0 auto;
    margin-bottom: 30px;
}

@media (min-width:480px) {
    .coop-box {
        column-count: 2;
        column-gap: 10px;
    }
}

@media (min-width:960px) {
    .coop-box {
        column-count: 3;
        column-gap: 10px;
    }
}

@media (min-width:1200px) {
    .coop-box {
        column-count: 4;
        column-gap: 10px;
    }
}

@media (min-width:1660px) {
    .coop-box {
        column-count: 5;
        column-gap: 10px;
    }
}

.coop-pic {
    break-inside: avoid;
    box-sizing: border-box;
    padding: 10px;
    border: 1px solid #ccc;
    margin-bottom: 10px;
}

.coop-pic img {
    width: 100%;
}

.coop-pic-tit {
    display: block;
    width: 150px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    font-size: 16px;
    color: #333;
    margin: 0 auto;
    margin-top: 20px;
    border: 1px solid #999;
}