/* reset */
*, *::before, *::after {
    /*所有的标签，和伪元素都选中*/
    margin: 0;
    padding: 0;
    /*移动端常用布局是非固定像素*/
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    /*点击高亮效果的清除*/
    tap-highlight-color: transparent;
    -webkit-tap-highlight-color: transparent;
}
ul, o {
    list-style: none;
}
a {
    text-decoration: none;
}
html {
    font-family: "PingFang SC Regular", "Helvetica Neue", Helvetica, Arial, "Microsoft Yahei", "Hiragino Sans GB", "Heiti SC", "WenQuanYi Micro Hei", sans-serif;
    font-size: 14px;
}
body {
    min-width: 1200px;
    color: #333;
}
img {
    max-width: 100%;
}
body {
    min-width: 1200px;
    color: #333;
}
.fl {
    float: left;
}
.fr {
    float: right;
}
.backcon {
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}
.backcov {
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
.clearfix {
    overflow: auto;
    _height: 1%
}
.clear::after {
    content: '';
    display: block;
    clear: both;
}
.clear {
    content: '';
    display: block;
    clear: both;
}
.clearfix::after {
    content: '';
    display: block;
    clear: both;
}
/* header */
.header {
    height: 120px;
    background-color: transparent;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10;
    background-color: #343435;
    /* box-shadow: 0px 2px 4px 0px #333; */
    min-width: 992px;
}
.header.on {
    background-color: rgba(6, 6, 7, 0.7);
}
.header-inner {
    position: relative;
    width: 1200px;
    margin: 0 auto;
    padding-top: 35px;
}
.logo {
    display: inline-block;
    width: 246px;
    height: 50px;
    background: url('../images/pc/1x/logo.png') 0 0 no-repeat;
    vertical-align: middle;
    background-size: contain;
}
.logo h1 {
    text-indent: -10000px;
}
.logo span {
    display: block;
    margin-top: 7px;
    font-size: 12px;
    color: #cb9b43;
    letter-spacing: 9px;
}
.nav-bar {
    margin-left: 225px;
}
.nav-bar, .languages-tab {
    display: inline-block;
}
.nav-bar li, .languages-tab .nav-menu {
    display: none;
}
.nav-bar li, .languages-tab li {
    display: inline-block;
}
.nav-bar li a, .languages-tab li a {
    vertical-align: middle;
    color: #999999;
    font-size: 18px;
}
.nav-bar li a:hover {
    color: #fff;
}
.nav-bar li.active a, .languages-tab li a.active {
    color: #ffffff;
}
.nav-bar li {
    margin-right: 24px;
}
.nav-bar li:last-child {
    margin-right: 32px;
}
.languages-tab li {
    line-height: 50px;
    margin-left: 15px;
}
.languages-tab li:nth-child(1) {
    margin-left: 0;
}
.languages-tab {
    float: right;
}
/* footer */
.footer-inner {
    width: 1200px;
    margin: 0 auto;
}
.footer-f1 {
    height: 80px;
    line-height: 80px;
    background: #0b0b0b;
}
.footer-f1 span {
    font-size: 18px;
    vertical-align: middle;
    color: #ffffff;
    opacity: 0.4;
}
.footer-f1 .languages-tab {
    float: none;
    margin-left: 28px;
}
.footer-f1 .languages-tab a {
    color: #ffffff;
    opacity: 0.4;
}
.footer-f1 .languages-tab a.active {
    opacity: 1;
}
.footer-f1 .official-social-account {
    float: right;
}
.footer-f1 .official-social-account li {
    display: inline-block;
    line-height: 70px;
}
.footer-f1 .official-social-account a {
    display: inline-block;
    vertical-align: middle;
    margin-left: 26px;
    cursor: pointer;
}
.footer-f1 .official-social-account .facebook {
    position: relative;
    width: 32px;
    height: 32px;
    background: url('../images/pc/1x/Facebook.png') 0 0 no-repeat;
    background-size: cover;
}
.footer-f1 .official-social-account .twitter {
    position: relative;
    width: 32px;
    height: 27px;
    background: url('../images/pc/1x/twitter.png') 0 0 no-repeat;
    background-size: cover;
}
.footer-f1 .official-social-account .wechat {
    position: relative;
    width: 32px;
    height: 27px;
    background: url('../images/pc/1x/wechat.png') 0 0 no-repeat;
    background-size: 32px 27px;
}
.footer-f1 .official-social-account .wechat span {
    display: none;
    position: absolute;
    padding: 16px 10px 10px 10px;
    width: 114px;
    height: 121px;
    bottom: -121px;
    left: -10px;
    background-image: url('../images/pc/1x/qr-wrap.png');
    background-size: 114px 121px;
    opacity: 1;
}
.footer-f1 .official-social-account .wechat span img {
    width: 100%;
}
.footer-f1 .official-social-account .weibo {
    width: 32px;
    height: 28px;
    background: url('../images/pc/1x/weibo.png') 0 0 no-repeat;
    background-size: 32px 28px;
}
.footer-f2 {
    height: 63px;
    line-height: 63px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background-color: #1B1B1B;
    font-size: 18px;
}
.footer-f2 span {
    display: block;
    float: left;
    width: 234px;
    color: #ffffff;
}
.footer-f3 {
    background-color: #1B1B1B;
}
.footer-f3 ul {
    float: left;
    width: 234px;
    margin-top: 7px;
}
.footer-f3 li {
    margin-bottom: 17px;
}
.footer-f3 li a {
    font-size: 16px;
    color: #ffffff;
    opacity: 0.4;
}
.footer-f3 li a:hover {
    opacity: 1;
}
.footer-f3 span {
    display: none;
    ;
}
.footer-f4 {
    height: 62px;
    line-height: 62px;
    background: rgba(27, 27, 27, 0.9);
}
.footer-f4 li {
    float: left;
    margin-right: 10px;
    font-size: 16px;
    color: #ffffff;
}
.footer-f4 a, .footer-f4 .copyright {
    color: #ffffff;
}
.footer-f4 .copyright {
    float: right;
}
.footer-f4 .footer-inner a {
    font-size: 14px;
}
/* a button for scrolling to top */
.scroll-top {
    position: fixed;
    bottom: 54px;
    right: 100px;
    width: 96px;
    height: 96px;
    display: none;
    background: url('../images/pc/1x/scroll_to_top.png');
    background-size: 96px;
    border: none;
    outline: none;
    cursor: pointer;
}
/* animations */
.slowslide {
    animation-name: slowslide;
    animation-duration: 600ms;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}
@keyframes slowslide {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(20px);
    }
}
/* media query */
@media (-webkit-min-device-pixel-ratio: 2), (-moz-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo {
        background-image: url('../images/pc/2x/logo.png');
        display: inline-block;
        margin-top: 6px;
    }
    .footer-f1 .official-social-account i.wechat {
        background-image: url('../images/pc/2x/wechat.png');
    }
    .footer-f1 .official-social-account i.weibo {
        background-image: url('../images/pc/2x/weibo.png');
    }
    .scroll-top {
        background-image: url('../images/pc/2x/scroll_to_top.png');
    }
    .footer-f1 .official-social-account .wechat span {
        background-image: url('../images/pc/2x/qr-wrap.png');
    }
}
@media screen and (max-width: 1200px) and (-webkit-min-device-pixel-ratio: 2), screen and (max-width: 1200px) and (-moz-min-device-pixel-ratio: 2), screen and (max-width: 1200px) and (min-device-pixel-ratio: 2), screen and (max-width: 1200px) and (min-resolution: 192dpi) {
    .header, .scrolled-banner {
        height: 60px;
    }
    .header-inner {
        padding: 16px 16px 0;
        width: 100%;
    }
    .logo {
        width: 100px;
        height: 28px;
        background: url('../images/mobile/2x/logo.png')no-repeat;
        background-size: contain;
        display: inline-block;
        margin-top: 6px;
    }
    .logo span {
        display: none;
    }
    .header-inner .nav-bar {
        display: none;
        border-radius: 4px;
        opacity: .9;
    }
    .header-inner .nav-bar.visible {
        display: block;
        position: absolute;
        width: 116px;
        right: 0;
        top: 50px;
        background-color: #1B1B1B;
    }
    .header-inner .nav-bar li {
        display: block;
        margin: 0;
        text-align: center;
    }
    .header-inner .nav-bar li a {
        display: block;
        margin: 10px 0;
        font-size: 16px;
    }
    .header-inner .languages-tab ul {
        display: inline-block;
    }
    .header-inner .languages-tab li {
        line-height: 28px;
    }
    .header-inner .languages-tab li a {
        font-size: 14px;
    }
    .header-inner .languages-tab .nav-menu {
        display: inline-block;
        margin-left: 15px;
        height: 18px;
        width: 21px;
        background: url('../images/mobile/2x/menu.png') no-repeat;
        background-size: 21px 18px;
        border: none;
        outline: none;
        vertical-align: middle;
    }
    .footer-inner {
        width: 100%;
    }
    .footer-f1 .languages-tab, .footer-f1 .official-social-account {
        display: none;
    }
    .footer-f1 {
        height: 40px;
        line-height: 40px;
    }
    .footer-f1 .footer-inner {
        padding: 0 12px;
    }
    .footer-f1 span {
        font-size: 12px;
    }
    .footer-f2 {
        display: none;
    }
    .footer-f3 span {
        display: block;
        padding: 6px 12px;
        font-size: 14px;
        line-height: 20px;
        letter-spacing: 1px;
        color: #ffffff;
        border-bottom: 1px solid #383838;
    }
    .footer-f3 span i {
        float: right;
        margin-top: 2px;
        display: block;
        width: 16px;
        height: 16px;
        background: url('../images/mobile/2x/unfold.png');
        background-size: 16px;
    }
    .footer-f3 span.unfolded i {
        margin-top: 9px;
        height: 2px;
        background: url('../images/mobile/2x/fold.png') 0 0 no-repeat;
        background-size: 16px 2px;
    }
    .footer-f3 ul {
        float: none;
        display: none;
        width: 100%;
        padding: 7px 12px;
        margin-top: 0;
        border-bottom: 1px solid #383838;
    }
    .footer-f3 ul.unfolded {
        display: block;
    }
    .footer-f3 li {
        float: left;
        margin: 7px 20px 7px 0;
    }
    .footer-f3 li a {
        font-size: 12px;
    }
    .footer-f4 {
        height: auto;
        line-height: unset;
        padding-top: 8px;
        padding-bottom: 5px;
    }
    .footer-f4 .footer-inner {
        text-align: center;
    }
    .footer-f4 .copyright {
        float: none;
        display: block;
        color: #767676;
        font-size: 12px;
    }
    .footer-f4 ul {
        display: inline-block;
    }
    .footer-f4 li {
        font-size: 12px;
        display: inline-block;
        line-height: 16px;
        color: #767676;
    }
    .footer-f4 li a {
        color: #767676;
    }
}
@media screen and (max-width: 1200px) and (-webkit-min-device-pixel-ratio: 3), screen and (max-width: 1200px) and (-moz-min-device-pixel-ratio: 3), screen and (max-width: 1200px) and (min-device-pixel-ratio: 3), screen and (max-width: 1200px) and (min-resolution: 240dpi) {
    .logo {
        background-image: url('../images/mobile/3x/logo.png');
    }
    .header-inner .languages-tab .nav-menu {
        background-image: url('../images/mobile/3x/menu.png');
    }
    .footer-f3 span i {
        background-image: url('../images/mobile/3x/unfold.png');
    }
    .footer-f3 span.unfolded i {
        background-image: url('../images/mobile/3x/fold.png');
    }
}