@charset "utf-8";
html {
    font-size: 16px;
}

@media screen and (min-width: 768px) and (max-width: 960px) {

    html {
        font-size: 10px !important;
    }

    .main_top, .main_center, .main_bottom {
        background-size: auto 70% !important;
    }

    .mainb3_top {
        width: 100% !important;
    }
}

@media screen and (min-width: 960px) and (max-width: 1024px) {

    html {
        font-size: 14px !important;
    }
}

@media screen and (min-width: 1024px) and (max-width: 1200px) {

    html {
        font-size: 16px !important;
    }
}

@media screen and (min-width: 1200px) and (max-width: 1560px) {

    html {
        font-size: 18px !important;
    }
}

@media screen and (min-width: 1560px) and (max-width: 1920px) {

    html {
        font-size: 22px !important;
    }
}

/* CSS Document */
body, div, p, ul, ol, li, dl, dt, dd, h1, h2, h3, h4, h5, h6, table, tr, td, form, input, select, textarea, span, img, a, em, strong, * {
    margin: 0;
    padding: 0;
}

body {
    font-family: "w微软雅黑", "PingFang SC"; /*font-size: 16px;*/
    font-size: 1rem;
    color: #666; /*background: url(https://cdn01.imgs.duolebo.com/dlbimg/3.0.0.0/images/index_bg.png);*/
    /*background-repeat:no-repeat;  background-size:contain;*/ /*background-size:cover;*/
    /*background-size:100% 100%;*/
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-size: 1.5rem;
    color: #333333;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
    color: #333333;
}

a:hover {
    color: #ff6600;
}

#header {
    /*position: fixed;*/
    width: 100%;
    height: 5rem;
    background: rgba(255, 255, 255, 0.5);
    z-index: 1;
}

.header_inner {
    max-width: 60rem;
    width: 60rem;
    height: 5rem;
    margin: 0 auto;
}

.logo {
    margin-top: 1.3rem;
    float: left;
}

.logo a > img {
    width: 12rem;
}

.nav {
    float: right;
    height: 100%;
    /*width: 32rem;*/
    /*原来width: 27rem;*/
}

.nav li {
    float: left;
    text-align: center;
    box-sizing: border-box;
    /*margin-right: 1.5rem;   */
}

.nav li a {
    display: inline-block;
    margin-right: 1rem;
    margin-left: 1.1rem;
    /*width: 5rem;*//*原来width: 4.5rem;*/
    font-size: 0.85rem;
    line-height: 5rem;
    cursor: pointer;
}

.active {
    color: #ff6600;
    height: 5rem;
    font-weight: bold;
    border-top: solid 1px #ff6600;
}

.active a {
    color: #ff6600;
}

/*.active:active{color:#ff6600;}*/

.login {
    float: left;
    width: 4.1rem;
    height: 1.9rem;
    border: 1px solid #333333;
    border-radius: 1.25rem;
    text-align: center;
    line-height: 1.9rem;
    margin-top: 1.55rem;
    color: #333333;
    font-size: 0.7rem;
}

/*	 color: #ff6600;
}
*/
.login:hover {
    border-color: #ff6600;
    color: #ff6600;
}

/*页脚*/
.footer {
    width: 100%;
    height: 15rem;
    background: url(https://cdn01.imgs.duolebo.com/dlbimg/3.0.0.0/images/index_f_bg.png);
    background-repeat: no-repeat;
    background-size: cover;
    background-size: 100% 100%;
    color: #ffffff;
    padding-top: 7.25rem;
    margin-top: 5rem;
    font-size: 0.7rem;
}

.footer_top {
    width: 60rem;
    height: 10.5rem;
    border-bottom: solid 1px rgba(255, 255, 255, 0.8);
    margin: 0 auto;
    padding-top: 1rem;
}

.ft_left {
    float: left;
    color: rgba(255, 255, 2555, 0.8);
    /*width: 300px;*/

}

.ftl_left {
    float: left;
}

.ftl_left img {
    width: 13.15rem;
    height: 4.55rem;
}

.ftl_right {
    float: left;
    padding-left: 2rem;
}

.ft_left > img {
    float: left;
}

.qrcode {
    width: 4rem;
    height: 5rem;
    padding-right: 1rem;
    text-align: center;
    float: left;
}

.qrcode_inner {
    padding-bottom: 0.3rem;
}

.qrcode_inner img, .qrcode img {
    width: 3.3rem;
}

.lq_bottom {
    clear: left;
    padding-top: 1.85rem;
}

.lq_bottom span {
    padding-left: 2rem;
}

.ft_right {
    width: 28.7rem;
    height: 11rem;
    float: right;

}

.column {
    width: 5rem;
    display: inline-block;
    /*vertical-align: top;*/
}

.column > a {
    display: block;
    color: rgba(255, 255, 2555, 0.5);
    padding-bottom: 1rem;
    /* text-decoration: none;*/
}

.column_span {
    margin-bottom: 1rem;
    color: rgba(255, 255, 2555, 0.8);
}

.a {
    outline: 0;
}

.column a span, .column_span a span {
    color: rgba(255, 255, 2555, 0.8);
}

.column1 {
    width: 5rem;
    display: inline-block;
    vertical-align: top;
    /*padding-top: 2.1rem;*/
}

.column1 > a {
    display: block;
    color: rgba(255, 255, 2555, 0.5);
    padding-bottom: 1rem;
    /* text-decoration: none;*/
}

.footer_bottom {
    max-width: 60rem;
    text-align: center;
    margin-top: 11.1rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer_bottom a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.column a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.column1 a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.mobile_links {
    width: 60rem;
    margin: 0 auto;
}

.mobile_links .column {
    width: 10rem;
    height: auto;
    margin-top: 0rem;
    overflow: hidden;
}

.mobile_links a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.mobile_links .column1 {
    width: 10rem;
    height: auto;
    margin-left: 5.8rem;
    overflow: hidden;
}

.mobile_links .column1 a, .mobile_links .column a {
    font-size: 2.3rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
    color: #fde6d8;
}

.mobile_bottom {
    width: 100%;
    height: 15rem;
    margin-top: -2rem;
    background: url(https://cdn01.imgs.duolebo.com/dlbimg/3.0.0.0/images/mobile_b_b.png);
    background-size: 100% 100%;
}

.mobile_bottom_center {
    width: 62rem;
    margin: 0 auto;
    padding-top: 2rem;
}

.mobile_company, .mobile_company_small {
    float: left;
    width: 60rem;
    text-align: center;
    border-top: solid 1px #fde6d8;
    font-size: 2rem;
    padding-top: 1rem;
    color: #fde6d8;
}

.mobile_company a, .mobile_company_small a {
    color: #fde6d8;
}

.mobile_cooperation, .mobile_question, .mobile_cooperation_small, .mobile_question_small {
    float: left;
    width: 31rem;
    color: #fde6d8;
    padding-bottom: 1rem;
    font-size: 2rem;
    color: #fde6d8;
}

.mobile_header {
    display: none;
    height: 9rem;
    width: 100%;
    background: #fff;
    z-index: 999;
    min-width: 64rem;
    text-align: center;
}

.menu_icon {
    display: block;
    float: left;
    width: 4.5rem;
    height: 4.5rem;
    margin-top: 2rem;
}

.mobile_menu_open, .mobile_menu_close {
    display: block;
    position: absolute;
    float: left;
    width: 4.5rem;
    height: 4.5rem;
    margin-top: 2rem;
}

.icon_line0, .icon_line1, .icon_line2, .icon_line3, .icon_line4 {
    display: block;
    width: 100%;
    position: absolute;
    height: 1px;
    margin-top: 1rem;
    background-color: #000000;
    border-radius: 1px;
    z-index: 999;
}

.icon_line3 {
    margin-top: 2rem;
    transform: rotate(45deg);
    -ms-transform: rotate(45deg); /* Internet Explorer */
    -moz-transform: rotate(45deg); /* Firefox */
    -webkit-transform: rotate(45deg); /* Safari 和 Chrome */
    -o-transform: rotate(45deg); /* Opera */
}

.icon_line4 {
    margin-top: 2rem;
    transform: rotate(-45deg);
    -ms-transform: rotate(-45deg); /* Internet Explorer */
    -moz-transform: rotate(-45deg); /* Firefox */
    -webkit-transform: rotate(-45deg); /* Safari 和 Chrome */
    -o-transform: rotate(-45deg); /* Opera */
}

.mobile_header_body {
    width: 60rem;
    margin: 0 auto;
}

.mobile_logo {
    float: left;
    width: 5rem;
    height: 5rem;
    margin-top: 2rem;
    margin-left: 27.5rem;
}

.mobile_login {
    float: right;
    width: 5rem;
    height: 5rem;
    margin-top: 2rem;
}

.mobile_menu, .mobile_submenu {
    display: none;
    position: absolute;
    width: 100%;
    height: 43.1rem;
    border-bottom: 2px solid #E6E6E6;
    z-index: 999;
}

.mobile_menu ul, .mobile_submenu ul {
    width: 100%;
    height: 100%;
    background-color: #f2f2f2;
}

.mobile_menu ul li, .mobile_submenu ul li {
    width: 100%;
    height: 6rem;
    border-top: 1px solid #E6E6E6
}

.mobile_menu ul li a, .mobile_submenu ul li a {
    display: block;
    width: 100%;
    margin: 1.5rem 5rem;
    font-size: 2.3rem;
}

.mobile_links, .mobile_bottom, .mobile_company_small, .mobile_cooperation_small, .mobile_question_small {
    display: none;
}

.app_menu {
    width: 6rem;
    z-index: 9;
    /*border-top: solid 1px #ffffff;*/
}

.app_menu li {
}

.app_menu a {
    color: #ff6600;
    /*width: 11rem;*/
    /*margin: 0;*/
    /*padding: 0;*/
    /*font-size: 1rem;*/
}

.app_menu a:hover + .menu1 {
    visibility: visible;
}

.menu1 {
    display: flex;
    width: 10rem;
    height: 14.5rem;
    margin-left: -1.8rem;
    margin-top: -1rem;
    padding-top: 1rem;
    background-image: url("../en/images/app_download.png");
    background-size: 100% 100%;
    z-index: 9999;
    position: relative;
    visibility: hidden;
}

.menu1 li {
    float: left;
    height: 2rem;
    padding-left: 1.2rem;
}

.menu1 li img {
    float: left;
    height: 1.5rem;
    margin-bottom: 0.5rem;
}

.menu1 li a {
    float: left;
    width: 4rem;
    text-align: left;
    font-size: 0.85rem;
    height: 1.5rem;
    line-height: 1.5rem;
    margin-left: 0.5rem;
}

.menu1:hover {
    visibility: visible;
}

.app_menu1 {
    width: 11rem;
    z-index: 9;
    border-top: solid 1px #ffffff;
}

.app_menu1 li {
    width: 11rem;
}

.app_menu1 a {
    color: #ff6600;
    width: 11rem;
    margin: 0;
    padding: 0;
    font-size: 1rem;
}

.app_menu1 a:hover + .menu2 {
    visibility: visible;
}

.menu2 {
    width: 6rem;
    height: 9.7rem;
    padding-top: 1rem;
    padding-bottom: 0.6rem;
    background-image: url("../en/images/app_download.png");
    background-size: 100% 100%;
    visibility: hidden;
}

.menu2 li {
    float: left;
    width: 5rem;
    padding-left: 1.2rem;
    padding-top: 0.5rem;
    border-top: solid 0px #ffffff;
}

.menu2 li img {
    float: left;
    height: 4rem;
    margin: 1rem 1rem 1rem 2rem;
}

.menu2 li a {
    float: left;
    width: 4rem;
    margin-left: 0.5rem;
    text-align: left;
    font-size: 1rem;
}

.menu2:hover {
    visibility: visible;
}

@media screen and (min-width: 100px) and (max-width: 767px) {

    body {
        min-width: 64rem;
    }

    #header, .footer_top {
        display: none;
    }

    .mobile_header, .mobile_links, .mobile_bottom, .mobile_footer {
        display: block;
    }

    .footer {
        height: 20rem;
    }
}

@media screen and (min-width: 100px) and (max-width: 379px) {

    html {
        font-size: 5px !important;
    }

    .mobile_cooperation_small, .mobile_question_small {
        text-align: center;
    }

    .mobile_company, .mobile_cooperation, .mobile_question {
        display: none;
    }

    .mobile_bottom {
        height: 25rem;
    }

    .mobile_company_small, .mobile_cooperation_small, .mobile_question_small {
        display: block;
    }

    .footer {
        height: 22rem;
        padding-top: 6rem;
        background-size: 100% 100%;
    }

    .mobile_links {
        height: auto;
        overflow: hidden;
    }
}

@media screen and (min-width: 380px) and (max-width: 439px) {

    html {
        font-size: 6px !important;
    }
}

@media screen and (min-width: 440px) and (max-width: 509px) {

    html {
        font-size: 7px !important;
    }
}

@media screen and (min-width: 510px) and (max-width: 579px) {

    html {
        font-size: 8px !important;
    }
}

@media screen and (min-width: 580px) and (max-width: 639px) {

    html {
        font-size: 9px !important;
    }
}

@media screen and (min-width: 640px) and (max-width: 699px) {

    html {
        font-size: 10px !important;
    }
}

@media screen and (min-width: 700px) and (max-width: 767px) {

    html {
        font-size: 11px !important;
    }
}

@media screen and (min-width: 768px) and (max-width: 960px) {

    html {
        font-size: 10px !important;
    }

    .header_inner {
        max-width: 68rem;
        width: 68rem;
    }

    .menu1 {
        width: 12rem;
    }

    .ft_left {
        /*margin-left: 6rem;*/
    }

    .ft_right {
        height: 10.3rem;
    }

    .column_span {
        margin-bottom: 0.5rem;
    }

    .column > a {
        padding-bottom: 0.3rem;
    }

    .column1 > a {
        padding-bottom: 0.3rem;
    }

        /*.footer{*/
    /*padding-top: 4rem;*/
    /*}*/
    .footer_top {
        width: 68rem;
        /*height: 13rem;*/
    }

    .footer_bottom {
        width: 68rem;
        max-width: 68rem;
        margin-top: 11rem;
    }
}