body {
  min-height: 100%;
  font-family: 'int-r', 'PingFang SC', 'Microsoft YaHei', 'Microsoft YaHei UI', 'SimSun', 'SimHei', 'Arial';
  font-size: 16px;
  line-height: 1.5; 
}
@media screen and (min-width: 0px) {
    .top {
        line-height: 32rem;
        height: 32rem;
        text-align: right;
        padding-right: 40rem;
        background-color: #000;
        font-size: 18rem;
        color: #fff;
    }

    * .head {
        margin: 0rem;
        height: 90rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    * .head .logo {
        margin: 0rem;
        margin-left: 30rem;
    }

    * .head .logo img {
        margin: 0rem;
        width: 218rem;
    }

    * .head .nav {
        margin: 0rem;
    }

    * .head .nav ul {
        margin: 0rem;
        display: flex;
        width: 660rem;
        justify-content: space-around;
        padding-right: 160rem;
    }

    * .head .nav ul li {
        margin: 0rem;
        text-align: center;
        position: relative;
    }

    * .head .nav ul li .nav-active{
       font-size: 18rem;
       font-weight: 700;
    }

    * .head .nav ul li:hover .level_list {
        display: block;
    }

    * .head .nav ul li .level_list {
        width: 35rem;
        position: absolute;
        font-size: 12rem;
        font-weight: 500;
        background: #fff;
        z-index: 999;
        width: 297rem;
        text-align: left;
        padding: 20rem;
        display: none;
    }

    * .head .nav ul li .level_list .item {
        margin-bottom: 21rem;
    }

    * .head .nav ul li .level_list .item h1 {
        font-size: 18rem;
    }

    * .head .nav ul ul {
        display: block;
    }

    * .head .nav ul ul li {
        display: block;
        width: 100%;
        width: 121rem;
        text-align: left;
        margin-left: 20rem;
        margin-top: 10rem;
    }

    * .head .nav ul li a {
        margin: 0rem;
    }

    * .head .nav ul li .level_list a {
        font-weight: 500;
        color: #000;
        font-size: 16rem;
    }

    * .head .nav ul li a div {
        margin: 0rem;
        font-size: 22rem;
        color: #000;
    }

    * .head .nav ul li a .en {
        margin: 0rem;
        color: #565656;
        font-size: 19rem;
    }

    .head .logo .menu {
        display: none;
    }

    .head .search {
    }

    .head .search .icon {
        width: 30rem;
        height: 30rem;
        margin-right: 35rem;
    }

    .nav-active {
        font-weight: 700;
    }
}@media screen and (max-width: 750px) {
    
    * .head .nav {
        display: none;
        top: 122rem;
        left: 0rem;
        position: absolute;
        width: 100%;
        height: 100%;
        background: #fff;
        z-index: 999;
    }

    * .head .menu {
        display: block !important; 
    }
    * .head .nav ul {
        margin: 0rem;
        display: block;
        width: 100%;
        justify-content: space-around;
        padding-right: 0rem;
    }
    * .head .nav ul ul li {
        display: block;
        width: 100%;
        width: 100%;
        text-align: center;
        margin-left: 00rem;
        margin-top: 10rem;
    }

   * .head .nav ul li .level_list {
        width: 35rem;
        position: absolute;
        font-size: 12rem;
        font-weight: 500;
        background: #fff;
        z-index: 999;
        width: 100%;
        text-align: center;
        padding: 0 67rem;
        display: none;
    }
    * .head .logo { 
        display: flex;
    }

    * .head .logo img {
        margin: 0rem;
        width: 128rem;
    }

    * .head .nav ul {
        margin: 0rem;
        display: block;
        width: 100%;
        justify-content: space-around;
        padding-right: 0rem;
    }

      * .head .nav ul li a .en {
        margin: 0rem;
        color: #565656;
        font-size: 19rem;
        line-height: 40rem;
    }

     * .head .nav ul {
        margin: 0rem;
        display: block;
        width: 100%;
        justify-content: space-around;
        padding-right: 0rem;
    }   
     * .head .logo button {
        border: none;
        background-color: #fff0;
        margin-left: 12rem;
    }

    * .head .logo button .icon_bar {
        display: block;
        border: none;
        background-color: #000;
        width: 20rem;
        height: 1rem;
        margin-bottom: 8rem;
    }

    * .head .logo button .icon_bar:last-child {
        margin-bottom: 0rem;
    }

}@media screen and (min-width: 0px) {
    .top {
        line-height: 32rem;
        height: 32rem;
        text-align: right;
        padding-right: 40rem;
        background-color: #000;
        font-size: 18rem;
        color: #fff;
    }

    * .head {
        margin: 0rem;
        height: 90rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        background-color: #000;
    }

    * .head .logo {
        margin: 0rem;
        margin-left: 30rem;
    }

    * .head .logo img {
        margin: 0rem;
        width: 140rem;
    }

    * .head .nav {
        margin: 0rem;
        display: flex;
        justify-content: center;
        width: 100%;
    }

    * .head .nav ul {
        margin: 0rem;
        display: flex;
        min-width: 966rem;
        justify-content: space-around;
        padding-right: 0rem;
    }

    * .head .nav ul li {
        margin: 0rem;
        text-align: center;
        position: relative;
        margin: 0 10rem;
    }

    * .head .nav ul li .nav-active {
        font-size: 18rem;
        font-weight: 700;
    }

    * .head .nav ul li:hover .level_list {
        display: block;
    }

    * .head .nav ul li .level_list {
        width: 35rem;
        position: absolute;
        font-size: 12rem;
        font-weight: 500;
        background: #fff;
        z-index: 999;
        width: 297rem;
        text-align: left;
        padding: 20rem;
        display: none;
    }

    * .head .nav ul li .level_list .item {
        margin-bottom: 21rem;
    }

    * .head .nav ul li .level_list .item h1 {
        font-size: 18rem;
    }

    * .head .nav ul ul {
        display: block;
    }

    * .head .nav ul ul li {
        display: block;
        width: 100%;
        width: 121rem;
        text-align: left;
        margin-left: 20rem;
        margin-top: 10rem;
    }

    * .head .nav ul li a {
        margin: 0rem;
    }

    * .head .nav ul li .level_list a {
        font-weight: 500;
        color: #000;
        font-size: 16rem;
    }

    * .head .nav ul li a div {
        margin: 0rem;
        font-size: 22rem;
        color: #000;
    }

    * .head .nav ul li a .en {
        margin: 0rem;
        color: #fff;
        font-size: 19rem;
        text-transform: uppercase;
    }

    .head .logo .menu {
        display: none;
    }

    .head .search {
    }

    .head .search .icon {
        width: 30rem;
        height: 30rem;
        margin-right: 35rem;
    }

    .nav-active {
        font-weight: 700;
    }
}@media screen and (max-width: 750px) {
    
    * .head .nav {
        display: none;
        top: 122rem;
        left: 0rem;
        position: absolute;
        width: 100%;
        height: 100%;
        background: #fff;
        z-index: 999;
    }

    * .head .menu {
        display: block !important; 
    }
    * .head .nav ul {
        margin: 0rem;
        display: block;
        width: 100%;
        justify-content: space-around;
        padding-right: 0rem;
    }
    * .head .nav ul ul li {
        display: block;
        width: 100%;
        width: 100%;
        text-align: center;
        margin-left: 00rem;
        margin-top: 10rem;
    }

   * .head .nav ul li .level_list {
        width: 35rem;
        position: absolute;
        font-size: 12rem;
        font-weight: 500;
        background: #fff;
        z-index: 999;
        width: 100%;
        text-align: center;
        padding: 0 67rem;
        display: none;
    }
    * .head .logo { 
        display: flex;
    }

    * .head .logo img {
        margin: 0rem;
        width: 128rem;
    }

    * .head .nav ul {
        margin: 0rem;
        display: block;
        width: 100%;
        justify-content: space-around;
        padding-right: 0rem;
    }

      * .head .nav ul li a .en {
        margin: 0rem;
        color: #565656;
        font-size: 19rem;
        line-height: 40rem;
    }

     * .head .nav ul {
        margin: 0rem;
        display: block;
        width: 100%;
        justify-content: space-around;
        padding-right: 0rem;
    }   
     * .head .logo button {
        border: none;
        background-color: #fff0;
        margin-left: 12rem;
    }

    * .head .logo button .icon_bar {
        display: block;
        border: none;
        background-color: #000;
        width: 20rem;
        height: 1rem;
        margin-bottom: 8rem;
    }

    * .head .logo button .icon_bar:last-child {
        margin-bottom: 0rem;
    }

}@media screen and (min-width: 0px) {
    .banner {
        background: #000;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
    }

    .banner .b_img {
        width: 100%;
        text-align: center;
    }

    .banner .b_img img {
    }

    .banner .b_title {
        color: #fff;
        font-size: 80rem;
        font-weight: 700;
        margin-top: 70rem;
        margin-bottom: 82rem;
    }
}@media screen and (min-width: 0px) {
    .case {
    }

    .case .c_list {
    }

    .case .c_list {
    }

    .case .c_list .c_item {
        display: flex;
        justify-content: space-between;
        margin: 60rem 84rem 88rem;
        padding-bottom: 84rem;
        gap: 20rem;
        border-bottom: 1rem solid #bababa;
    }

    .case .c_list .c_item .c_i_left {
    }

    .case .c_list .c_item .c_i_left img {
    }

    .case .c_list .c_item .c_i_right {
    }

    .case .c_list .c_item .c_i_right .c_title {
        font-size: 55rem;
        color: #000;
        font-weight: 700;
        width: 100%;
        text-align: center;
        margin-top: 80rem;
    }

    .case .c_list .c_item .c_i_right .c_i_info {
        font-size: 23rem;
        color: #000;
        height: 257rem;
    }

    .case .c_list .c_item .c_i_right .c_i_title {
        font-size: 22rem;
        color: #000;
        margin-top: 50rem;
    }

    .case .c_list .c_item .c_i_right .c_i_title name {
    }

    .case .c_list .c_item .c_i_right .c_content {
        margin-top: 15rem;
    }

    .case .c_list .c_item .c_i_right .c_content .c_i_content {
    }

    .case .c_list .c_item .c_i_right .c_content expiration {
    }

    .case .c_list {
    }
}@media screen and (min-width: 0px) {
    .contact {
    }

    .contact .c_title {
        font-size: 40rem;
        font-weight: 700;
        color: #4d4d4d;
        text-align: center;
        margin-bottom: 10rem;
    }

    .contact .c_info {
        color: #000;
        font-size: 40rem;
        text-align: center;
        font-weight: 700;
        margin-bottom: 10rem;
    }

    .contact .c_call {
        font-size: 40rem;
        color: #000;
        text-align: center;
        display: flex;
        justify-content: center;
        align-items: center;
        margin-bottom: 70rem;
    }

    .contact .c_call img {
    }

    .contact .c_call user {
    }

    .contact .c_call user mobile {
    }

    .contact .c_call user mobile user {
    }

    .contact .c_call user mobile user tel {
    }
}