@media (max-width: 767px) {
    .product-class-show {
        /*margin-top: 45px;*/
    }

    .product-class-show li {
        float: left;
        list-style: none;
        width: 25%;
        border-left: 5px solid #fff;
        height: auto;
        transition: all 1s;
        position: relative;
        overflow: hidden;
        /*border-left: 2px solid rgba(255, 255, 255, .8);*/
        /*box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.8);*/
        object-fit: cover;
    }

    .product-class-show li:first-child {
        border-left: none;
    }


    .product-class-show ul {
        margin: 0;
        padding: 0;
        cursor: pointer;
    }

    .product-class-show ul:hover li {
        width: 16.666%;
    }

    .product-class-show ul li:hover {
        width: 50%;
    }

    .product-class-show li .title {
        position: absolute;
        width: 570px;
        height: 180px;
        text-indent: 2em;
        line-height: 50px;
        bottom: 0px;
        left: 0;
        background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0), #000000);
        display: flex;
        justify-content: space-between;
    }

    .product-class-show a {
        color: #fff;
        text-decoration: none;
    }

    .english-title {
        color: #231815;
        font-size: 16px;
        text-align: center;
        margin-bottom: 5px;
    }

    .china-title {
        color: #000000;
        font-size: 30px;
        text-align: center;
        margin-bottom: 0;
        font-weight: bold;
    }

    .title-box {
        line-height: 18px;
    }

    .content-box {
        padding: 25px 0px;
        /*overflow: hidden;*/
        /*margin: 0 -15px;*/
    }

    .class-info {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 190px;
    }

    .class-line {
        width: 45px;
        height: 2px;
        background-color: #46B5B8;
    }

    .class-icon {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .class-name {

    }

    .more {
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 13px;
    }

    .more img {
        width: 20px;
        height: auto;
        /*padding-left: 5px;*/
    }

    .class-info-more {
        display: flex;
        justify-content: center;
        align-items: center;
        padding-right: 20px;
    }

    .check-report {
        background: url("/images/check_bg.png") no-repeat;
        background-size: 100% 100%;
    }

    .check-bg {
        width: 100%;
        height: auto;
        background: url("/images/certificate.png") no-repeat;
        background-size: 100% 100%;
        padding: 15px;
        margin: 0 5px;
    }

    .check-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
    }

    .zizhi-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
        -webkit-box-reflect: below 0px -webkit-linear-gradient(transparent, transparent 85%, rgba(0, 0, 0, 0.2));
        margin-bottom: 45px;
    }

    .check-imgs {
        margin-top: 45px;
    }

    .about-us {
        background: url("/images/about_bg.png") no-repeat;
        background-size: 100% 100%;
        padding-bottom: 100px;
    }

    .about-text {
        padding-top: 100px;
        width: 40%;
    }

    .about-box {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .color-white {
        color: #ffffff !important;
    }

    .about-content {
        color: #ffffff;
        margin-top: 48px;
        font-size: 16px;

        font-weight: 400;
        color: #FFFFFF;
        line-height: 26px;
    }

    .about-icon {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 600px;
        height: 600px;
        flex-wrap: wrap;
        padding-top: 100px;
        padding-left: 40px;
        flex: 1;
    }

    .youdian-box-1 {
        width: 50%;
        height: 50%;
    }

    .youdian-box-2 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border: 1px solid #ffffff;
        width: 50%;
        height: 50%;
    }

    .youdian-box-3 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border: 1px solid #ffffff;
        width: 50%;
        height: 50%;
    }

    .youdian-box-4 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: rgba(255, 255, 255, 0.5);
        border: 1px solid transparent;
        width: 50%;
        height: 50%;
    }

    .youdian-text {
        width: 96px;
        height: 24px;
        font-size: 24px;

        font-weight: 400;
        color: #FFFFFF;
        line-height: 75px;
        text-align: center;
    }

    .youdian-english {
        width: 193px;
        height: 13px;
        font-size: 16px;
        font-family: DIN;
        font-weight: bold;
        color: #FFFFFF;
        line-height: 75px;
        opacity: 0.5;
        text-align: center;
        margin-top: 18px;
    }

    .newest {
        display: flex;
        justify-content: center;
        align-items: flex-start;
        background: #F8F8F8;
    }

    .first-news {
        width: 50%;
        height: 400px;
        position: relative;
    }

    .news-box {
        padding: 10px;
        width: 100%;
    }

    .news-title {
        font-size: 16px;
        color: #000;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .news-desc {
        font-size: 14px;
        color: #727171;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;

        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        overflow: hidden;
        /*! autoprefixer: off */
        -webkit-box-orient: vertical;
        /*height: 50px;*/
        text-align: justify;
    }

    .news-class {
        display: flex;
        font-size: 12px;
        margin-top: 10px;
        justify-content: flex-start;
        align-items: center;
    }

    .news-class-name {
        background: #FFFFFF;
        border-radius: 5px;
        color: #46B5B8;
        padding: 5px;
    }

    .news-time {
        color: #666;
        display: flex;
        justify-content: end;
        align-items: center;
        font-size: 13px;
        width: 100%;
        padding-top: 10px;
    }

    .news-time img {
        width: 12px !important;
        height: 12px !important;
        margin-right: 5px;
    }

    .first-news img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .more-news {
        width: 50%;
        background: #F8F8F8;
    }

    .news-item {
        border-bottom: 5px solid #fff;
        padding: 5px 0 5px 20px;
        display: flex;
        width: 50%;
    }

    .news-img {
        width: 300px;
        padding-right: 10px;
    }

    .news-img img {
        width: 160px;
        object-fit: contain;
        height: 120px;
    }

    .news-content {
        border-bottom: 1px dashed #ccc;
        display: flex;
        justify-content: flex-start;
        align-items: flex-start;
        flex-direction: column;
    }

    .news-item:last-child {
        border-bottom: none;
    }

    .news-item-title {
        font-size: 20px;

        font-weight: 400;
        color: #000000;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .news-item-desc {
        font-size: 16px;

        font-weight: 400;
        color: #666666;
        line-height: 26px;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        overflow: hidden;
        -webkit-box-orient: vertical;
        height: 50px;
    }

    .news-item-class {
        display: flex;
        font-size: 12px;
        margin-top: 10px;
        justify-content: flex-start;
        align-items: center;
    }

    .news-item-class-name {
        background: #46B5B8;
        border-radius: 5px;
        color: #ffffff;
        padding: 5px;
    }

    .news-item-time {
        color: #B3D8D9;
        margin-left: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .news-item-time img {
        width: 12px !important;
        height: 12px !important;
        margin-right: 5px;
    }

    /*new*/
    .product-class-head {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .product {
        background: #fff;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 300px;
        /*box-shadow: #ccc 5px 5px 10px;*/
        border-radius: 2px;
        max-width: 540px;
        width: 100%;
        margin: auto;
    }

    .product a {
        width: 100%;
        height: 100%;
    }

    .product img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .product-list {
        margin-top: 20px;
    }

    .product-box {
        margin-bottom: 50px;
    }

    .content-news-box {
        padding: 20px;
        background: #fff;
        border-radius: 20px;
        margin-bottom: 50px;
        box-shadow: #ccc 5px 5px 10px;
    }

    .product-title {
        text-align: left;
        font-size: 16px;
        font-family: Quicksand-Medium;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
        max-width: 540px;
        width: 100%;
        margin: 10px auto;
        font-weight: 600;
        color: #222222;
    }

    .product-desc {
        font-size: 14px;
        color: #222222;
    }

    .product-title a {
        font-size: 14px;
        color: #000000;
    }

    .pinpai {
        padding: 30px 0;
    }

    .pinpai-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
    }

    .pinpai-item {
        width: 150px;
        height: 150px;
        border-radius: 5px;
        border: 1px solid #ccc;
        margin-top: 10px;
    }

    .pinpai-item img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    .left-box {
        width: 100%;
        background: #ffffff;
        margin-top: 50px;
        padding: 10px;
        border-radius: 5px;
        box-shadow: #ccc 5px 5px 10px;
        margin-bottom: 20px;
    }

    .left-head {
        display: flex;
        justify-content: space-between;
        border-bottom: 1px #eeeeee solid;
        height: 30px;
    }

    .left-head img {
        width: 20px;
        height: 15px;
    }

    .left-title {
        font-size: 15px;
        font-weight: 700;
    }

    .left-list {

    }

    .left-list-item {
        font-size: 12px;
        padding: 10px 5px;
        border-bottom: 1px #eeeeee solid;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .left-list-item a {
        color: #000000;
    }

    .left-list-item img {
        width: 200px;
        height: 50px;
        object-fit: contain;
        margin: auto;
        display: block;
    }

    .inner-nav {
        text-align: right;
    }

    .inner-nav a {
        color: #000000;
    }

    .product-item {
        margin-bottom: 20px;
    }

    .left-list-product-item {
        width: 49%;
        margin-bottom: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }

    .left-list-product {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        padding: 5px;
    }

    .left-list-product-item img {
        width: 110px;
        height: 110px;
        object-fit: contain;
    }

    .left-list-product-item span {
        display: block;
        width: 100%;
        font-size: 12px;
        padding: 10px 5px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

        color: #000000;
    }

    .detail-box {
        margin-top: 50px;
        padding: 20px;
        background: #ffffff;
        box-shadow: #ccc 5px 5px 10px;
        border-radius: 5px;
        margin-bottom: 50px;
    }


    .banner-desc-box {
        position: absolute;
        top: 0;
        left: 0;
        width: 90%;
        height: 100%;
        /*background: rgba(255, 255, 255, 0.5);*/
        background: linear-gradient(to left, rgba(0, 0, 0, 0), #666);
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        padding-left: 5px;
    }


    .banner-desc-box-title {
        font-size: 25px;
        font-weight: 300;
        color: #fff;
        text-align: left;
        width: 100%;
        font-family: Quicksand-Medium;
    }

    .banner-desc-box-content {
        font-size: 14px;
        color: #fff;
        text-align: left;
        width: 100%;
    }

    .carousel-item {
        height: 100%;
    }

    .w-100 {
        height: 100%;
        object-fit: cover;
    }

    .carousel-inner {
        height: 200px;
    }

    .product-class-list {
        margin-top: 50px;
        display: flex;
        justify-content: space-around;
        align-content: center;
        flex-wrap: wrap;
        padding: 0 10px;
    }

    .product-class-list a{
        width:33%;
        display: flex;
        justify-content: center;
        align-items: center;
        color: #000;
    }

    .product-class-item {
        width: 100%;
        cursor: pointer;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }
    .product-class-item-img{
        background: #fff;
        width: 75px;
        height: 75px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .product-class-item-img img {
        width: 100%;
        height: auto;
        object-fit: contain;
    }

    .product-class-item:hover .product-class-item-title {
        background: #37414b;
        color: #ffffff;
    }

    .product-class-item:hover a {
        color: #ffffff;
    }

    .product-class-item-img img {
        width: 100%;
        object-fit: cover;
    }

    .product-class-item-title {
        font-size: 14px;
        padding: 5px;
        height: 52px;
        width: 100%;
        text-align: center;
    }

    .function-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px;
        margin-top: 50px;
    }

}

@media (min-width: 768px) and (max-width: 1365px) {
    .product-class-show {
        /*margin-top: 45px;*/
    }

    .product-class-show li {
        float: left;
        list-style: none;
        width: 25%;
        border-left: 5px solid #fff;
        height: auto;
        transition: all 1s;
        position: relative;
        overflow: hidden;
        /*border-left: 2px solid rgba(255, 255, 255, .8);*/
        /*box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.8);*/
        object-fit: cover;
    }

    .product-class-show li:first-child {
        border-left: none;
    }


    .product-class-show ul {
        margin: 0;
        padding: 0;
        cursor: pointer;
    }

    .product-class-show ul:hover li {
        width: 16.666%;
    }

    .product-class-show ul li:hover {
        width: 50%;
    }

    .product-class-show li .title {
        position: absolute;
        width: 570px;
        height: 180px;
        text-indent: 2em;
        line-height: 50px;
        bottom: 0px;
        left: 0;
        background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0), #000000);
        display: flex;
        justify-content: space-between;
    }

    .product-class-show a {
        color: #fff;
        text-decoration: none;
    }

    .english-title {
        color: #231815;
        font-size: 16px;
        text-align: center;
        margin-bottom: 5px;
    }

    .china-title {
        color: #000000;
        font-size: 30px;
        text-align: center;
        margin-bottom: 0;
        font-weight: bold;
    }

    .title-box {
        line-height: 18px;
    }

    .content-box {
        padding: 25px 0px;
        /*overflow: hidden;*/
        margin: 0 -15px;
    }

    .class-info {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 190px;
    }

    .class-line {
        width: 45px;
        height: 2px;
        background-color: #46B5B8;
    }

    .class-icon {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .class-name {

    }

    .more {
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 13px;
    }

    .more img {
        width: 20px;
        height: auto;
        /*padding-left: 5px;*/
    }

    .class-info-more {
        display: flex;
        justify-content: center;
        align-items: center;
        padding-right: 20px;
    }

    .check-report {
        background: url("/images/check_bg.png") no-repeat;
        background-size: 100% 100%;
    }

    .check-bg {
        width: 100%;
        height: auto;
        background: url("/images/certificate.png") no-repeat;
        background-size: 100% 100%;
        padding: 15px;
        margin: 0 5px;
    }

    .check-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
    }

    .zizhi-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
        -webkit-box-reflect: below 0px -webkit-linear-gradient(transparent, transparent 85%, rgba(0, 0, 0, 0.2));
        margin-bottom: 45px;
    }

    .check-imgs {
        margin-top: 45px;
    }

    .about-us {
        background: url("/images/about_bg.png") no-repeat;
        background-size: 100% 100%;
        padding-bottom: 100px;
    }

    .about-text {
        padding-top: 100px;
        width: 40%;
    }

    .about-box {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .color-white {
        color: #ffffff !important;
    }

    .about-content {
        color: #ffffff;
        margin-top: 48px;
        font-size: 16px;

        font-weight: 400;
        color: #FFFFFF;
        line-height: 26px;
    }

    .about-icon {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 600px;
        height: 600px;
        flex-wrap: wrap;
        padding-top: 100px;
        padding-left: 40px;
        flex: 1;
    }

    .youdian-box-1 {
        width: 50%;
        height: 50%;
    }

    .youdian-box-2 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border: 1px solid #ffffff;
        width: 50%;
        height: 50%;
    }

    .youdian-box-3 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border: 1px solid #ffffff;
        width: 50%;
        height: 50%;
    }

    .youdian-box-4 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: rgba(255, 255, 255, 0.5);
        border: 1px solid transparent;
        width: 50%;
        height: 50%;
    }

    .youdian-text {
        width: 96px;
        height: 24px;
        font-size: 24px;

        font-weight: 400;
        color: #FFFFFF;
        line-height: 75px;
        text-align: center;
    }

    .youdian-english {
        width: 193px;
        height: 13px;
        font-size: 16px;
        font-family: DIN;
        font-weight: bold;
        color: #FFFFFF;
        line-height: 75px;
        opacity: 0.5;
        text-align: center;
        margin-top: 18px;
    }

    .newest {
        display: flex;
        justify-content: center;
        align-items: flex-start;
        background: #F8F8F8;
    }

    .first-news {
        width: 50%;
        height: 400px;
        position: relative;
    }

    .news-box {
        padding: 10px;
        width: 100%;
    }

    .news-title {
        font-size: 16px;
        color: #000;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .news-desc {
        font-size: 14px;
        color: #727171;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;

        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        overflow: hidden;
        /*! autoprefixer: off */
        -webkit-box-orient: vertical;
        /*height: 50px;*/
        text-align: justify;
    }

    .news-class {
        display: flex;
        font-size: 12px;
        margin-top: 10px;
        justify-content: flex-start;
        align-items: center;
    }

    .news-class-name {
        background: #FFFFFF;
        border-radius: 5px;
        color: #46B5B8;
        padding: 5px;
    }

    .news-time {
        color: #666;
        display: flex;
        justify-content: end;
        align-items: center;
        font-size: 13px;
        width: 100%;
        padding-top: 10px;
    }

    .news-time img {
        width: 12px !important;
        height: 12px !important;
        margin-right: 5px;
    }

    .first-news img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .more-news {
        width: 50%;
        background: #F8F8F8;
    }

    .news-item {
        border-bottom: 5px solid #fff;
        padding: 5px 0 5px 20px;
        display: flex;
        width: 50%;
    }

    .news-img {
        width: 300px;
        padding-right: 10px;
    }

    .news-img img {
        width: 160px;
        object-fit: contain;
        height: 120px;
    }

    .news-content {
        border-bottom: 1px dashed #ccc;
        display: flex;
        justify-content: flex-start;
        align-items: flex-start;
        flex-direction: column;
    }

    .news-item:last-child {
        border-bottom: none;
    }

    .news-item-title {
        font-size: 20px;

        font-weight: 400;
        color: #000000;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .news-item-desc {
        font-size: 16px;

        font-weight: 400;
        color: #666666;
        line-height: 26px;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        overflow: hidden;
        -webkit-box-orient: vertical;
        height: 50px;
    }

    .news-item-class {
        display: flex;
        font-size: 12px;
        margin-top: 10px;
        justify-content: flex-start;
        align-items: center;
    }

    .news-item-class-name {
        background: #46B5B8;
        border-radius: 5px;
        color: #ffffff;
        padding: 5px;
    }

    .news-item-time {
        color: #B3D8D9;
        margin-left: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .news-item-time img {
        width: 12px !important;
        height: 12px !important;
        margin-right: 5px;
    }

    /*new*/
    .product-class-head {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .product {
        background: #fff;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 300px;
        /*box-shadow: #ccc 5px 5px 10px;*/
        border-radius: 2px;
        max-width: 540px;
        width: 100%;
        margin: auto;
    }

    .product a {
        width: 100%;
        height: 100%;
    }

    .product img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .product-list {
        margin: 20px 0;
    }

    .product-box {
        margin-bottom: 50px;
        padding: 0 10px;
    }

    .content-news-box {
        padding: 20px;
        background: #fff;
        border-radius: 20px;
        margin-bottom: 50px;
        box-shadow: #ccc 5px 5px 10px;
    }

    .product-title {
        text-align: left;
        font-size: 16px;
        font-family: Quicksand-Medium;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
        max-width: 540px;
        width: 100%;
        margin: 10px auto;
        font-weight: 600;
        color: #222222;
    }

    .product-desc {
        font-size: 14px;
        color: #222222;
    }

    .product-title a {
        font-size: 14px;
        color: #000000;
    }

    .pinpai {
        padding: 30px 0;
    }

    .pinpai-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
    }

    .pinpai-item {
        width: 150px;
        height: 150px;
        border-radius: 5px;
        border: 1px solid #ccc;
        margin-top: 10px;
    }

    .pinpai-item img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    .left-box {
        width: 100%;
        background: #ffffff;
        margin-top: 50px;
        padding: 10px;
        border-radius: 5px;
        box-shadow: #ccc 5px 5px 10px;
        margin-bottom: 20px;
    }

    .left-head {
        display: flex;
        justify-content: space-between;
        border-bottom: 1px #eeeeee solid;
        height: 30px;
    }

    .left-head img {
        width: 20px;
        height: 15px;
    }

    .left-title {
        font-size: 15px;
        font-weight: 700;
    }

    .left-list {

    }

    .left-list-item {
        font-size: 12px;
        padding: 10px 5px;
        border-bottom: 1px #eeeeee solid;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .left-list-item a {
        color: #000000;
    }

    .left-list-item img {
        width: 200px;
        height: 50px;
        object-fit: contain;
        margin: auto;
        display: block;
    }

    .inner-nav {
        text-align: right;
    }

    .inner-nav a {
        color: #000000;
    }

    .product-item {
        margin-bottom: 20px;
    }

    .left-list-product-item {
        width: 49%;
        margin-bottom: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }

    .left-list-product {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        padding: 5px;
    }

    .left-list-product-item img {
        width: 110px;
        height: 110px;
        object-fit: contain;
    }

    .left-list-product-item span {
        display: block;
        width: 100%;
        font-size: 12px;
        padding: 10px 5px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

        color: #000000;
    }

    .detail-box {
        margin-top: 50px;
        padding: 20px;
        background: #ffffff;
        box-shadow: #ccc 5px 5px 10px;
        border-radius: 5px;
        margin-bottom: 50px;
    }


    .banner-desc-box {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        min-width: 500px;
        height: 100%;
        /*background: rgba(255, 255, 255, 0.5);*/
        background: linear-gradient(to left, rgba(0, 0, 0, 0), #666);
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }


    .banner-desc-box-title {
        font-size: 40px;
        font-weight: 300;
        color: #fff;
        text-align: left;
        width: 600px;
        font-family: Quicksand-Medium;
    }

    .banner-desc-box-content {
        font-size: 16px;
        color: #fff;
        text-align: left;
        width: 600px;
    }

    .product-class-list {
        margin: 50px 0 0;
        display: flex;
        justify-content: space-around;
        align-content: center;
        padding: 0 10px;
    }

    .product-class-list a{
        width: 16%;
    }

    .product-class-item {
        width: 100%;
        cursor: pointer;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }

    .product-class-item-img{
        background: #fff;
        width: 75px;
        height: 75px;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .product-class-item-img img{
        width: 100%;
        height: auto;
        object-fit: contain;
    }

    .product-class-item:hover .product-class-item-title {
        background: #37414b;
        color: #ffffff;
    }

    .product-class-item:hover a {
        color: #ffffff;
    }

    .product-class-item-img img {
        width: 100%;
        object-fit: cover;
    }

    .product-class-item-title {
        font-size: 14px;
        padding: 5px;
        color: #000;
        width: 100%;
        text-align: center;
    }

    .function-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px;
        margin-top: 50px;
    }

}

@media (min-width: 1366px) {
    .product-class-show {
        /*margin-top: 45px;*/
    }

    .product-class-show li {
        float: left;
        list-style: none;
        width: 25%;
        border-left: 5px solid #fff;
        height: auto;
        transition: all 1s;
        position: relative;
        overflow: hidden;
        /*border-left: 2px solid rgba(255, 255, 255, .8);*/
        /*box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.8);*/
        object-fit: cover;
    }

    .product-class-show li:first-child {
        border-left: none;
    }


    .product-class-show ul {
        margin: 0;
        padding: 0;
        cursor: pointer;
    }

    .product-class-show ul:hover li {
        width: 16.666%;
    }

    .product-class-show ul li:hover {
        width: 50%;
    }

    .product-class-show li .title {
        position: absolute;
        width: 570px;
        height: 180px;
        text-indent: 2em;
        line-height: 50px;
        bottom: 0px;
        left: 0;
        background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0), #000000);
        display: flex;
        justify-content: space-between;
    }

    .product-class-show a {
        color: #fff;
        text-decoration: none;
    }

    .english-title {
        color: #231815;
        font-size: 16px;
        text-align: center;
        margin-bottom: 5px;
    }

    .china-title {
        color: #000000;
        font-size: 30px;
        text-align: center;
        margin-bottom: 0;
        font-weight: bold;
    }

    .title-box {
        line-height: 18px;
    }

    .content-box {
        padding: 25px 0px;
        /*overflow: hidden;*/
        margin: 0 -15px;
    }

    .class-info {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 190px;
    }

    .class-line {
        width: 45px;
        height: 2px;
        background-color: #46B5B8;
    }

    .class-icon {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .class-name {

    }

    .more {
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 13px;
    }

    .more img {
        width: 20px;
        height: auto;
        /*padding-left: 5px;*/
    }

    .class-info-more {
        display: flex;
        justify-content: center;
        align-items: center;
        padding-right: 20px;
    }

    .check-report {
        background: url("/images/check_bg.png") no-repeat;
        background-size: 100% 100%;
    }

    .check-bg {
        width: 100%;
        height: auto;
        background: url("/images/certificate.png") no-repeat;
        background-size: 100% 100%;
        padding: 15px;
        margin: 0 5px;
    }

    .check-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
    }

    .zizhi-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
        -webkit-box-reflect: below 0px -webkit-linear-gradient(transparent, transparent 85%, rgba(0, 0, 0, 0.2));
        margin-bottom: 45px;
    }

    .check-imgs {
        margin-top: 45px;
    }

    .about-us {
        background: url("/images/about_bg.png") no-repeat;
        background-size: 100% 100%;
        padding-bottom: 100px;
    }

    .about-text {
        padding-top: 100px;
        width: 40%;
    }

    .about-box {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .color-white {
        color: #ffffff !important;
    }

    .about-content {
        color: #ffffff;
        margin-top: 48px;
        font-size: 16px;

        font-weight: 400;
        color: #FFFFFF;
        line-height: 26px;
    }

    .about-icon {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 600px;
        height: 600px;
        flex-wrap: wrap;
        padding-top: 100px;
        padding-left: 40px;
        flex: 1;
    }

    .youdian-box-1 {
        width: 50%;
        height: 50%;
    }

    .youdian-box-2 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border: 1px solid #ffffff;
        width: 50%;
        height: 50%;
    }

    .youdian-box-3 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border: 1px solid #ffffff;
        width: 50%;
        height: 50%;
    }

    .youdian-box-4 {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: rgba(255, 255, 255, 0.5);
        border: 1px solid transparent;
        width: 50%;
        height: 50%;
    }

    .youdian-text {
        width: 96px;
        height: 24px;
        font-size: 24px;

        font-weight: 400;
        color: #FFFFFF;
        line-height: 75px;
        text-align: center;
    }

    .youdian-english {
        width: 193px;
        height: 13px;
        font-size: 16px;
        font-family: DIN;
        font-weight: bold;
        color: #FFFFFF;
        line-height: 75px;
        opacity: 0.5;
        text-align: center;
        margin-top: 18px;
    }

    .newest {
        display: flex;
        justify-content: center;
        align-items: flex-start;
        background: #F8F8F8;
    }

    .first-news {
        width: 50%;
        height: 400px;
        position: relative;
    }

    .news-box {
        padding: 10px;
        width: 100%;
    }

    .news-title {
        font-size: 16px;
        color: #000;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .news-desc {
        font-size: 14px;
        color: #727171;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;

        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        overflow: hidden;
        /*! autoprefixer: off */
        -webkit-box-orient: vertical;
        /*height: 50px;*/
        text-align: justify;
    }

    .news-class {
        display: flex;
        font-size: 12px;
        margin-top: 10px;
        justify-content: flex-start;
        align-items: center;
    }

    .news-class-name {
        background: #FFFFFF;
        border-radius: 5px;
        color: #46B5B8;
        padding: 5px;
    }

    .news-time {
        color: #666;
        display: flex;
        justify-content: end;
        align-items: center;
        font-size: 13px;
        width: 100%;
        padding-top: 10px;
    }

    .news-time img {
        width: 12px !important;
        height: 12px !important;
        margin-right: 5px;
    }

    .first-news img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .more-news {
        width: 50%;
        background: #F8F8F8;
    }

    .news-item {
        border-bottom: 5px solid #fff;
        padding: 5px 0 5px 20px;
        display: flex;
        width: 50%;
    }

    .news-img {
        width: 300px;
        padding-right: 10px;
    }

    .news-img img {
        width: 160px;
        object-fit: contain;
        height: 120px;
    }

    .news-content {
        border-bottom: 1px dashed #ccc;
        display: flex;
        justify-content: flex-start;
        align-items: flex-start;
        flex-direction: column;
    }

    .news-item:last-child {
        border-bottom: none;
    }

    .news-item-title {
        font-size: 20px;

        font-weight: 400;
        color: #000000;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .news-item-desc {
        font-size: 16px;

        font-weight: 400;
        color: #666666;
        line-height: 26px;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        overflow: hidden;
        -webkit-box-orient: vertical;
        height: 50px;
    }

    .news-item-class {
        display: flex;
        font-size: 12px;
        margin-top: 10px;
        justify-content: flex-start;
        align-items: center;
    }

    .news-item-class-name {
        background: #46B5B8;
        border-radius: 5px;
        color: #ffffff;
        padding: 5px;
    }

    .news-item-time {
        color: #B3D8D9;
        margin-left: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .news-item-time img {
        width: 12px !important;
        height: 12px !important;
        margin-right: 5px;
    }

    /*new*/
    .product-class-head {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .product {
        background: #fff;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 300px;
        /*box-shadow: #ccc 5px 5px 10px;*/
        border-radius: 2px;
        max-width: 540px;
        width: 100%;
        margin: auto;
    }

    .product a {
        width: 100%;
        height: 100%;
    }

    .product img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .product-list {
        margin-top: 20px;
    }

    .product-box {
        margin-bottom: 50px;
    }

    .content-news-box {
        padding: 20px;
        background: #fff;
        border-radius: 20px;
        margin-bottom: 50px;
        box-shadow: #ccc 5px 5px 10px;
    }

    .product-title {
        text-align: left;
        font-size: 16px;
        font-family: Quicksand-Medium;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
        max-width: 540px;
        width: 100%;
        margin: 10px auto;
        font-weight: 600;
        color: #222222;
    }

    .product-desc {
        font-size: 14px;
        color: #222222;
    }

    .product-title a {
        font-size: 14px;
        color: #000000;
    }

    .pinpai {
        padding: 30px 0;
    }

    .pinpai-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
    }

    .pinpai-item {
        width: 150px;
        height: 150px;
        border-radius: 5px;
        border: 1px solid #ccc;
        margin-top: 10px;
    }

    .pinpai-item img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    .left-box {
        width: 100%;
        background: #ffffff;
        margin-top: 50px;
        padding: 10px;
        border-radius: 5px;
        box-shadow: #ccc 5px 5px 10px;
        margin-bottom: 20px;
    }

    .left-head {
        display: flex;
        justify-content: space-between;
        border-bottom: 1px #eeeeee solid;
        height: 30px;
    }

    .left-head img {
        width: 20px;
        height: 15px;
    }

    .left-title {
        font-size: 15px;
        font-weight: 700;
    }

    .left-list {

    }

    .left-list-item {
        font-size: 12px;
        padding: 10px 5px;
        border-bottom: 1px #eeeeee solid;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

    }

    .left-list-item a {
        color: #000000;
    }

    .left-list-item img {
        width: 200px;
        height: 50px;
        object-fit: contain;
        margin: auto;
        display: block;
    }

    .inner-nav {
        text-align: right;
    }

    .inner-nav a {
        color: #000000;
    }

    .product-item {
        margin-bottom: 20px;
    }

    .left-list-product-item {
        width: 49%;
        margin-bottom: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }

    .left-list-product {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        padding: 5px;
    }

    .left-list-product-item img {
        width: 110px;
        height: 110px;
        object-fit: contain;
    }

    .left-list-product-item span {
        display: block;
        width: 100%;
        font-size: 12px;
        padding: 10px 5px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;

        color: #000000;
    }

    .detail-box {
        margin-top: 50px;
        padding: 20px;
        background: #ffffff;
        box-shadow: #ccc 5px 5px 10px;
        border-radius: 5px;
        margin-bottom: 50px;
    }


    .banner-desc-box {
        position: absolute;
        top: 0;
        left: 0;
        width: 40%;
        height: 100%;
        /*background: rgba(255, 255, 255, 0.5);*/
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        background: linear-gradient(to left, rgba(0, 0, 0, 0), #666);
    }


    .banner-desc-box-title {
        font-size: 40px;
        font-weight: 300;
        color: #fff;
        text-align: left;
        width: 600px;
        font-family: Quicksand-Medium;
    }

    .banner-desc-box-content {
        font-size: 18px;
        color: #fff;
        text-align: left;
        width: 600px;
    }

    .product-class-list {
        margin-top: 50px;
        display: flex;
        justify-content: space-around;
        align-content: center;
    }

    .product-class-item {
        width: 16%;
        cursor: pointer;
    }

    .product-class-item:hover .product-class-item-title {
        background: #37414b;
        color: #ffffff;
    }

    .product-class-item:hover a {
        color: #ffffff;
    }

    .product-class-item-img img {
        width: 100%;
        object-fit: cover;
    }

    .product-class-item-title {
        font-size: 14px;
        padding: 5px;
        width: 100%;
        text-align: center;
    }

    .function-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 0;
        margin-top: 50px;
    }

    .product-class-item{
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        height: 106px;
        width: 100%;
        color: #000000;
    }

    .product-class-item-img {
        background: #fff;
        width: 75px;
        height: 75px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .product-class-item-img img {
        width: 100%;
        height: auto;
        object-fit: contain;
    }
}