@media screen and (max-width: 1440px) {
    .layout {
        max-width: 1200px;
    }
    .search-block #search-txt {
        /*line-height: 80px;
        font-size: 40px;*/
    }
    .search-block #search {
        /*line-height: 80px;*/
    }
    .nav-tree .nav-item {
        padding: 0 30px;
    }
    .show-left {
        width: 640px;
    }
    .show-left .show-nav {
        width: 120px;
        height: 500px;
    }
    .show-left .show-view {
        width: 500px;
        height: 500px;
    }
    .show-right {
        width: 540px;
    }
    .load-item .load-img {
        width: 140px;
    }
    .load-item .load-info {
        width: calc(100% - 170px);
    }
    .load-info a {
        margin-top: 30px;
    }
}

@media screen and (max-width: 1200px) {
    .layout {
        padding: 0 20px;
    }
    .nav-tree .nav-item {
        padding: 0 10px;
    }
    .search-block #search-txt {
        /*line-height: 60px;
        font-size: 30px;*/
    }
    .search-block #search {
        /*line-height: 60px;*/
    }
    .product-list .product-item {
        width: calc(25% - 15px);
        margin: 0 20px 12px 0;
    }
    .product-list .product-item:nth-child(6n) {
        margin: 0 20px 12px 0;
    }
    .product-list .product-item:nth-child(4n) {
        margin-right: 0;
    }
    .show-left {
        width: 500px;
    }
    .show-left .show-nav {
        width: 95px;
        height: 400px;
    }
    .show-left .show-view {
        width: 400px;
        height: 400px;
    }
    .show-right {
        width: calc(100% - 520px);
    }
    .load-list .load-item {
        padding: 40px 30px;
    }
    .load-item .load-info {
        width: calc(100% - 160px);
    }
}

@media screen and (max-width: 1080px) {
    .search-cont .search-block {
        /*width: 90%;
        padding: 60px 40px;*/
    }
    .foot-item h3 img {
        max-height: 20px;
    }
    .foot-item h3 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    .foot-item .foot-download a {
        font-size: 20px;
        margin-top: 10px;
    }
    .pro-item h2 {
        font-size: 20px;
    }
    .pro-item h2:before,
    .pro-item h2:after {
        font-size: 20px;
    }
    .load-item .load-img {
        width: 100px;
    }
    .load-item .load-info {
        width: calc(100% - 120px);
    }
    .load-info h3 {
        line-height: 24px;
        font-size: 16px;
        height: 48px;
        margin-top: 5px
    }
    .load-info a {
        margin-top: 20px;
    }
    .news-item .news-img {
        width: 250px;
    }
    .news-item .news-info {
        display: block;
        width: calc(100% - 270px);
        padding: 5px 0;
    }
    .search #search-btn {
        display: block;
    }

    .search .search-cont {
        display: none;
        position: fixed;
        z-index: 999;
        width: 100%;
        left: 0;
        background: #fff;
        padding: 20px;
    }
    .search-block #search-txt {
        width: calc(100% - 80px);
    }
    .search-block #search {
        color: #000;
        font-size: 24px;
    }
    .mobile {
        display: block;
    }
    .header .layout {
        padding: 0;
    }
    .head .logo {
        width: 100%;
        background: #fff;
    }
    .logo a {
        display: block;
        text-align: center;
        padding: 10px 0;
    }
    .nav {
        width: 33.33333333333%;
    }
    .head-right {
        width: 66.66666666667%
    }
    .head-right .search, .head-right .lang {
        width: 50%;
    }
    .nav, .head-right{
        text-align: center;
        background: #303030;
    }
    .nav>.nav-tree{
        display: block;
        position: fixed;
        overflow: hidden;
        top: 0;
        left: 0;
        width: 0;
        height: 100%;
        z-index: 9999;
        background: #fff;
        text-align: left;
    }
    .nav-item .nav-tree {
        display: block;
        position: static;
        padding: 0;
    }
    .nav-tree .nav-item {
        width: 100%;
        float: none;
    }
    .nav .nav-mask {
        content: "";
        display: none;
        position: fixed;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.6);
        top: 0;
        left: 0;
        z-index: 9990;
    }
    .nav #nav_close {
        display: none;
        position: fixed;
        width: 40px;
        line-height: 40px;
        background: #fff;
        top: 0;
        left: 70%;
        z-index: 9999;
        color: #333;
        text-align: center;
        padding: 0;
    }
    .head-right .search {
        margin-right: 0;
    }
    .lang i:after {
        content: "";
        display: none;
    }
    .nav i, .head-right i {
        font-size: 30px;
        color: #fff;
        padding: 10px 0;
    }

    .lang .lang-cont {
        width: 100%;
        position: fixed;
    }
}

@media screen and (max-width: 768px) {
    .foot-list .foot-item {
        width: 49%;
        border-bottom: 1px solid #ccc;
        padding: 10px 0;
    }

    .pro-list .pro-item {
        height: 260px;
    }

    .pro-item h2 {
        bottom: 5px;
        left: 10px;
        font-size: 16px;
        white-space: normal;
        word-break: break-all;
        color: #666;
        transform: skewX(-10deg);
        line-height: 1.3;
    }
    .pro-item h2:before,
    .pro-item h2:after {
        font-size: 16px;
        display: none;
    }

    .product-cont .pro-left {
        width: 100%;
        padding-bottom: 20px;
    }
    .product-cont .pro-right {
        width: 100%;
    }
    .product-list .product-item {
        width: calc(50% - 10px);
        margin: 5px;
    }
    .product-list .product-item:nth-child(6n) {
        margin: 5px;
    }
    .product-list .product-item:nth-child(4n) {
        margin: 5px;
    }

    .about-item .item-desc, .about-item .item-img {
        width: 100%;
        margin-bottom: 10px;
    }
    .pro-show {
        flex-wrap: wrap;
    }
    .show-left {
        width: 100%;
        justify-content: center;
        margin-bottom: 20px;
    }
    .show-left .show-nav {
        width: 120px;
        height: 500px;
        margin-right: 10px;
    }
    .show-left .show-view {
        width: 500px;
        height: 500px;
    }
    .show-right {
        width: 100%;
    }
    .news-right {
        display: none;
    }
    .news-cont .news-left {
        width: 100%;
    }
    .news-cont {
        margin-top: 30px;
    }
}

@media screen and (max-width: 640px) {
    .search-block #search-txt {
        line-height: 30px;
        font-size: 16px;
    }
    .search-block #search {
        font-size: 24px;
    }
    .foot-list .foot-item {
        width: 100%;
    }
    .pro-list .pro-item {
        height: 210px;
    }
    .show-left .show-nav {
        width: 100%;
        height: auto;
        margin-right: 0;
    }
    .show-left .show-view {
        display: none;
    }
    .load-list .load-item {
        width: 100%;
        margin-right: 0;
    }
    .news-item .news-img {
        width: 200px;
    }
    .news-item .news-info {
        width: calc(100% - 220px);
        padding: 0;
    }
    .news-info .desc {
        margin-top: 15px;
        -webkit-line-clamp: 2;
    } 
    .news-info i {
        margin-top: 15px;
    }
}
@media screen and (max-width: 480px) {
    .pro-list .pro-item {
        height: 160px;
    }
    .news-nav li {
        padding: 0 25px;
        margin: 0 10px;
    }
    .news-item .news-img {
        width: 150px;
    }
    .news-item .news-info {
        width: calc(100% - 170px);
        padding: 0;
    }
    .news-info h3 {
        font-size: 16px;
    }
    .news-info .desc {
        margin-top: 10px;
        -webkit-line-clamp: 1;
    } 
    .news-info i {
        margin-top: 10px;
    }
}
@media screen and (max-width: 400px) {
    .pro-list .pro-item {
        height: 140px;
    }
}