#open {
    display: none; 
    width: 30px;
    height: 50px;
    font-size: 30px;
    text-align: center;
    line-height: 50px;
    background-color: rgb(218, 215, 215);
    color: rgb(255, 255, 255);
    position: fixed;
    top: 200px;
    right: 10px;
    z-index: 5;
    opacity: 0;
    cursor: pointer;
}

#point {
    width: 160px;
    position: fixed;
    top: 423px;
    right: 40px;
    opacity: 0;
    z-index: 4;
    display: block;
    box-shadow: 5px 5px 10px 0px #a5a5a57a;
}

#point ul {
    width: 160px;
    /* height: 150px; */
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    background-color: rgb(255, 255, 255);
    transition: all 0.3s ease 0s;
    /* padding: 20px; */
}

#point ul li {
    width: 160px;
}

#point ul li a {
    padding: 0px 20px;
    box-sizing: border-box;
    display: block;
    width: 100%;
    height: 60px;
    line-height: 60px;
    font-size: 18px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    text-align: center;
    border-bottom: 1px solid rgb(204, 204, 204);
    transition: all 0.3s ease 0s;
}

#point ul li a:hover {
    color: rgb(255, 255, 255);
    background-color: rgb(237, 107, 0);
}

@media screen and (max-width: 1680px) {
    #point {
        display: none;
        top:300px;
        right:10px;
    }

    #open {
        opacity: 1;
        display: block;
    }
}
#banner {
    background-image: url("../images/product/banner.jpg");
}

#middle {
    position: relative;
    width: 1280px;
    background: rgb(255, 255, 255);
    margin: -219px auto auto;
    z-index: 3;
}

#generalization .content {
    width: 1280px;
    margin: auto;
    padding: 0px 70px;
    box-sizing: border-box;
}
#generalization  .introduce {
    height: 515px;
    margin-top: 75px;
}
#generalization .introduce .left {
    width: 560px;
    float: left;
    text-indent: 2em;
    line-height: 2em;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    text-align: justify;
}

#generalization .introduce .right img {
    /* width: 479px; */
    /* background: url("../images/product/introduce.jpg") 0% 0% / 559px 515px; */
    float: right;
}

#generalization  .list {
    box-sizing: border-box;
    margin: 0 auto;
}

#generalization .list ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#generalization .list ul li {
    width: 345px;
    height: 134px;
    cursor: pointer;
    transition: all 0.2s ease 0s;
    border-radius: 5px;
}

#generalization .list ul li a {
    width: 100%;
    height: 152px;
    text-align: center;
    color: rgb(237, 107, 0);
    font-size: 28px;
    font-weight: 600;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    overflow: hidden;
    transition: all 0.3s ease 0s;
    text-shadow: none;
}

#generalization .list ul li a:hover {
    width: 390px;
    height: 152px;
    text-align: center;
    color: rgb(237, 107, 0);
    font-size: 28px;
    font-weight: 600;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    overflow: hidden;
    transition: all 0.3s ease 0s;
    text-shadow: rgb(145, 145, 145) 1px 1px 1px;
}

#generalization .list ul li:hover {
    color: rgb(255, 255, 255);
    background: #ddd;
    background-size: 390px 152px;
    background-repeat: no-repeat;
}

#generalization .list ul li:hover a {
    color: rgb(237 107 0);
    text-shadow: 2px 2px 2px #ffffff;
}

#generalization .list ul li a .text1,
#generalization .list ul li a .text2 {
    margin-top: 50px;
    height: 25px;
    width: 100%;
}

#generalization .list ul li a .text3 {
    margin-top: 40px;
    height: 25px;
    width: 100%;
}

#generalization  .list ul li a .text4 {
    margin-top: 5px;
    height: 25px;
    width: 100%;
}

#generalization .success {
    height: 40px;
    margin-top:65px;
}


#examination .content {
    width: 1280px;
    margin: 133px auto auto;
}

#examination .right  .text1 {
    margin-top: 26px;
    font-size: 18px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    /*border-bottom: 1px solid rgb(255, 255, 255);*/
    color: rgb(255, 255, 255);
}
#examination  .right .top {
   margin-left:280px;
}
#examination .zero {
    width: 1280px;
    /* height: 325px; */
    background-color: rgb(245, 247, 250);
    margin-top: 90px;
    overflow: hidden;
    box-sizing: border-box;
}

#examination .zero .left {
    width: 635px;
    /* height: 325px; */
    float: left;
}

#examination .zero .left .top {
    width: 336px;
    margin-top: 20px;
    margin-left: 36px;
    font-size: 22px;
    color: rgb(51, 51, 51);
}

#examination .zero .left .bottom {
    margin-top: 40px;
    margin-left: 36px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(112, 112, 112);
    overflow-wrap: break-word;
    text-align: justify;
    line-height: 2em;
    text-indent: 2em;
    text-overflow: ellipsis;
}

#examination .zero .right {
    width: 514px;
    /* height: 316px; */
    float: right;
}
#examination .zero .right ul {
    width: 470px;
    display: flex;
    place-content: flex-start space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    margin-top: 16px;
    flex-direction: row;
}

#examination .zero .right  ul li {
    margin-top: 16px;
}

#examination .zero .right  ul li a {
    display: block;
    height: 20px;
    font-size: 14px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(237, 107, 0);
}

#examination .first {
    width: 1280px;
    background-image: url("../images/product/Electronization.jpg");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    margin-top: 90px;
}
#examination .Shelter {
    box-sizing: border-box;
    padding:20px 0;
    overflow: hidden;
}
#examination .first .Shelter {
    width: 1280px;
    overflow: hidden;
    box-sizing: border-box;
    /* height: 316px; */
    background-color: rgba(0, 0, 0, 0.5);
    /* padding: 20px 0; */
}

#examination .first .left {
    width: 625px;
    /* height: 316px; */
    float: left;
}

#examination .first .left .top {
    width: 336px;
    /* margin-top: 42px; */
    margin-left: 36px;
    font-size: 22px;
    color: rgb(255, 255, 255);
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

#examination .first .left .bottom {
    margin-top: 40px;
    margin-left: 36px;
    font-size: 16px;
    color: rgb(255, 255, 255);
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    overflow-wrap: break-word;
    text-align: justify;
    line-height: 2em;
    text-indent: 2em;
    text-overflow: ellipsis;
}

#examination .first .right {
    width: 514px;
    /* height: 316px; */
    float: right;
}
#examination .first .right .more {
    display: block;
    width: 72px;
    height: 20px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(255, 255, 255);
    margin-left: 401px;
    margin-top: 21px;
}

#examination .first .right svg {
    position: relative;
    color: rgb(237, 107, 0);
    left: 480px;
    top: -15px;
}

#examination .first .right .bottom .line {
    width: 410px;
    height: 1px;
    margin-top: 17px;
    margin-left: 194px;
    background-color: rgb(233, 233, 233);
}

#examination .first .right .bottom ul {
    width: 400px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 16px;
}

#examination .first .right .bottom ul li {
    margin-top: 16px;
    text-overflow: ellipsis;
}

#examination .first .right .bottom ul li a {
    display: block;
    font-size: 14px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(237, 107, 0);
    text-overflow: ellipsis;
}

#examination .second {
    width: 1280px;
    /* height: 325px; */
    background-color: rgb(245, 247, 250);
    margin-top: 90px;
    overflow: hidden;
}

#examination .second .left {
    width: 635px;
    /* height: 325px; */
    float: left;
}

#examination  .second .left .top {
    width: 336px;
    /* margin-top: 42px; */
    margin-left: 36px;
    font-size: 22px;
    color: rgb(51, 51, 51);
}

#examination  .second .left .bottom {
    margin-top: 40px;
    margin-left: 36px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(112, 112, 112);
    overflow-wrap: break-word;
    text-align: justify;
    line-height: 2em;
    text-indent: 2em;
    text-overflow: ellipsis;
}

#examination  .second .right {
    width: 514px;
    /* height: 316px; */
    float: right;
}
#examination .second .right .more {
    display: block;
    width: 72px;
    height: 18px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(51, 51, 51);
    margin-left: 401px;
    margin-top: 21px;
}

#examination .second .right svg {
    position: relative;
    left: 480px;
    top: -14px;
}

#examination .second .right .bottom svg {
    position: relative;
    left: 90px;
    top: -15px;
}

#examination .second .right .bottom ul {
    width: 380px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 16px;
}

#examination .second .right .bottom ul li {
    margin-top: 16px;
}

#examination .second .right .bottom ul li a {
    display: block;
    height: 20px;
    font-size: 14px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(237, 107, 0);
}

#examination  .third {
    width: 1280px;
    background-image: url("../images/product/Electronization.jpg");
    /* background-size: 1292px 316px; */
    /* background-repeat: no-repeat; */
    margin-top: 90px;
    /* overflow: hidden; */
}

#examination  .third .Shelter {
    width: 1280px;
    overflow: hidden;
    /* height: 316px; */
    background-color: rgba(0, 0, 0, 0.5);
}

#examination .third .left {
    width: 625px;
    /* height: 316px; */
    float: left;
}

#examination .third .left .top {
    width: 336px;
    /* margin-top: 42px; */
    margin-left: 36px;
    font-size: 22px;
    color: rgb(255, 255, 255);
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

#examination  .third .left .bottom {
    margin-top: 40px;
    margin-left: 36px;
    font-size: 16px;
    color: rgb(255, 255, 255);
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    overflow-wrap: break-word;
    text-align: justify;
    line-height: 2em;
    text-indent: 2em;
    text-overflow: ellipsis;
}

#examination .third .right {
    width: 514px;
    /* height: 316px; */
    float: right;
}
#examination  .third .right .more {
    display: block;
    width: 72px;
    height: 20px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(255, 255, 255);
    margin-left: 401px;
    margin-top: 21px;
}

#examination .third .right svg {
    position: relative;
    color: rgb(237, 107, 0);
    left: 480px;
    top: -15px;
}
#examination .third .right .bottom .line {
    width: 410px;
    height: 1px;
    margin-top: 17px;
    margin-left: 194px;
    background-color: rgb(233, 233, 233);
}

#examination  .third .right .bottom ul {
    width: 400px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 16px;
}

#examination .third .right .bottom ul li {
    margin-top: 16px;
    text-overflow: ellipsis;
}

#examination .third .right .bottom ul li a {
    display: block;
    font-size: 14px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(237, 107, 0);
    text-overflow: ellipsis;
}

#examination .content {
    width: 1280px;
    margin: 133px auto auto;
}

#testing .content {
    width: 1280px;
    margin: 129px auto auto;
    padding: 0px 70px;
    box-sizing: border-box;
}
#testing  .text {
    margin-top: 90px;
    font-size: 16px;
    color: rgb(51, 51, 51);
    line-height: 2em;
    text-align: justify;
    text-overflow: ellipsis;
}
#testing  .success {
    height: 40px;
    margin-top: 65px;
}
#testing  .list2 {
    height: 125px;
    /* margin-left: 45px; */
    margin-top: 39px;
}

#testing  .list2 ul {
    /* width: 1095px; */
    height: 125px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#testing  .list2 ul li {
    width: 25%;
    height: 125px;
}

#testing  .list2 ul li a {
    display: block;
    width: 100%;
    height: 125px;
    background-color: rgb(245, 247, 250);
}

#testing  .list2 ul li a::after {
    content: "";
    display: block;
    width: 1px;
    height: 60px;
    background-color: rgb(221, 219, 219);
    margin-top: -70px;
}

#testing  .list2 ul li:nth-child(1) a::after {
    display: none;
}

#testing  .list2 ul li a .number {
    display: block;
    width: 100%;
    height: 30px;
    font-size: 22px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(237, 107, 0);
    text-align: center;
    padding-top: 25px;
}

#testing  .list2 ul li a .text {
    display: block;
    width: 100%;
    height: 30px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(51, 51, 51);
    text-align: center;
    margin-top: 20px;
}

#testing  .list {
    height: 52px;
    margin-top: 39px;
    /* margin-left: 45px; */
}

#testing .list ul {
    height: 52px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#testing  .list ul li {}

#testing  .list ul li a {
    display: block;
    width: 260px;
    height: 65px;
    line-height: 65px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    background-color: rgb(245, 247, 250);
    text-align: center;
    transition: all 0.3s ease 0s;
    text-overflow: ellipsis;
}

#testing  .list ul li a:hover {
    color: rgb(255, 255, 255);
    background-color: rgb(237, 107, 0);
}

#teching .content {
    width: 1280px;
    margin: 129px auto auto;
    padding: 0px 70px;
    box-sizing: border-box;
}
#teching  .first {
    height: 304px;
    margin-top: 90px;
}

#teching  .first .left {
    float: left;
    width: 480px;
    text-align: justify;
    height: 304px;
}

#teching .first .left p {
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(51, 51, 51);
    line-height: 2em;
    text-indent: 2em;
    text-align: justify;
}

#teching .first .right {
    float: right;
    width: 480px;
    height: 280px;
    background-image: url("../images/product/teching-1.jpg");
    /* background-repeat: no-repeat; */
    /* background-size: 486px 304px; */
}

#teching  .second {
    height: 304px;
    margin-top: 50px;
}

#teching  .second .right {
    float: right;
    width: 480px;
    height: 304px;
    margin-top: 50px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

#teching  .second .right p {
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(51, 51, 51);
    line-height: 35px;
    text-indent: 2em;
    text-align: justify;
    text-overflow: ellipsis;
}

#teching  .second .left {
    float: left;
    width: 480px;
    height: 280px;
    background-image: url("../images/product/teching-2.jpg");
    /* background-repeat: no-repeat; */
    /* background-size: 486px 304px; */
}

#teching  .success {
    height: 40px;
    margin-top: 65px;
}
#teching  .list {
    width: 1140px;
    height: 125px;
    /* margin-left: 45px; */
    margin-top: 39px;
}

#teching  .list ul {
    width: 100%;
    height: 125px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#teching  .list ul li {
    width: 20%;
    height: 125px;
}

#teching  .list ul li a {
    display: block;
    width: 100%;
    height: 125px;
    background-color: rgb(245, 247, 250);
}

#teching  .list ul li a::after {
    content: "";
    display: block;
    width: 1px;
    height: 60px;
    background-color: rgb(221, 219, 219);
    margin-top: -70px;
}

#teching  .list ul li:nth-child(1) a::after {
    display: none;
}

#teching  .list ul li a .number {
    display: block;
    width: 100%;
    height: 30px;
    font-size: 22px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(237, 107, 0);
    text-align: center;
    padding-top: 25px;
}

#teching  .list ul li a .text {
    display: block;
    width: 100%;
    height: 30px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(51, 51, 51);
    text-align: center;
    margin-top: 20px;
}

#archive .content {
    width: 1280px;
    margin: 129px auto auto;
    padding: 0px 70px;
    box-sizing: border-box;
}
#archive  .first {
    height: 304px;
    margin-top: 90px;
}

#archive .first .left {
    float: left;
    width: 522px;
    height: 304px;
}

#archive .first .left p {
    width: 560px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: rgb(51, 51, 51);
    line-height: 2em;
    text-indent: 2em;
    text-align: justify;
    text-overflow: ellipsis;
}

#archive .first .right {
    float: right;
    /* width: 460px; */
    /* height: 300px; */
    background-image: url("../images/product/archive-1.jpg");
    /* background-repeat: no-repeat; */
    /* background-size: 486px 344px; */
    margin-right: 40px;
}

#archive  .first .right img {
    position: relative;
    z-index: -1;
    top: 35px;
    left: 40px;
    width: 460px;
    height: 300px;
}

#archive  .success {
    margin-top: 109px;
}
#archive .list {
    height: 133px;
    /* margin-left: 45px; */
    margin-top: 38px;
}

#archive  .list ul {
    display: flex;
    height: 133px;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

#archive  .list ul li {
    width: 258px;
    height: 46px;
    margin-top: 20px;
}

#archive .list ul li a {
    display: block;
    width: 260px;
    height: 45px;
    background-color: rgb(245, 247, 250);
    color: rgb(51, 51, 51);
    text-align: center;
    line-height: 45px;
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    transition: all 0.3s ease 0s;
    text-overflow: ellipsis;
}

#archive  .list ul::after {
    content: "";
    width: 232px;
    height: 0px;
    background: transparent;
    border: none;
}

#archive  .list ul ._list {
    width: 232px;
    height: 0px;
    background: transparent;
    border: none;
    overflow: hidden;
    visibility: hidden;
}

#archive .list ul li a:hover {
    background-color: rgb(237, 107, 0);
    color: rgb(255, 255, 255);
}

#human .content {
    width: 1280px;
    height: 700px;
    margin: 129px auto auto;
    padding: 0px 70px;
    box-sizing: border-box;
}
#human .left {
    width: 590px;
    height: 396px;
    float: left;
    margin-top: 90px;
}

#human  .left .text {
    width: 590px;
}

#human .left .text p {
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    line-height: 2em;
    text-align: justify;
    text-indent: 2em;
    text-overflow: ellipsis;
}

#human .right {
    width: 480px;
    height: 396px;
    float: right;
    margin-top: 90px;
    background-image: url("../images/product/human-4.jpg");
    /* background-repeat: no-repeat; */
    /* background-size: 502px 396px; */
}

#human .success {
    height: 40px;
    margin-top: 99px;
}
#human .list {
    width: 590px;
    height: 44px;
    margin-top: 35px;
}

#human .list ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    width: 590px;
    height: 44px;
}

#human  .list ul li {}

#human  .list ul li:nth-child(1) a {
    display: block;
    width: 153px;
    height: 44px;
    background-image: url("../images/product/human-1.jpg");
    background-size: 153px 44px;
    background-repeat: no-repeat;
}

#human  .list ul li:nth-child(2) a {
    display: block;
    width: 153px;
    height: 44px;
    background-image: url("../images/product/human-2.jpg");
    background-size: 153px 44px;
    background-repeat: no-repeat;
}

#human .list ul li:nth-child(3) a {
    display: block;
    width: 153px;
    height: 44px;
    background-image: url("../images/product/human-3.jpg");
    background-size: 153px 44px;
    background-repeat: no-repeat;
}

#generalization  .list ul .select1 {
    background: url("../images/product/pic1.jpg") no-repeat;
}

#generalization  .list ul .select2 {
    background: url("../images/product/pic3.jpg") no-repeat;
}

#generalization  .list ul .select3 {
    background: url("../images/product/pic2.jpg") no-repeat;
}

#generalization  .list ul .select1 a {
    color: #fff;
    text-shadow: 2px 2px 2px #0000008f;
}

#generalization  .list ul .select2 a {
    color: #fff;
    text-shadow: 2px 2px 2px #0000008f;
}

#generalization  .list ul .select3 a {
    color: #fff;
    text-shadow: 2px 2px 2px #0000008f;
}
.case ul {
    height: 200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding-top: 20px;
    box-sizing: border-box;
    flex-direction: row;
}
.case ul li {width: 260px;}
.case ul li a {
    width: 100%;
    height: 65px;
    text-align: center;
    vertical-align: middle;
    line-height: 45px;
    background: rgb(245, 247, 250);
    font-size: 16px;
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    text-overflow: ellipsis;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    box-sizing: border-box;
    padding: 10px;
    transition: all 0.3s ease 0s;
}

.case ul li a:hover {
    background-color: rgb(237, 107, 0);
    color: rgb(255, 255, 255);
}

.case ul::after {
    content: "";
    width: 232px;
    height: 0px;
    background: transparent;
    border: none;
}

.case ul ._list {
    width: 260px;
    height: 0px;
    background: transparent;
    border: none;
    overflow: hidden;
    visibility: hidden;
}

#examination .left .top {
    width: 336px;
    margin-top: 20px;
    margin-left: 36px;
    font-size: 22px;
    color: rgb(51, 51, 51);
}