* {
    margin: 0;
    padding: 0;
}
a {
    color: #40545A;
    text-decoration: none;
}
html, body {
    height: 100%;
    width: 100%;
}
ul li {
    list-style: none;
}
.header {
    height: 80px;
    background: #fff;
}
.header .logo {
    width: 194px;
    height: 68px;
    margin: 6px 85px;
    float: left;
}
.header .logo img {
 
}
.header ul {
    float: right;
    margin-right: 50px;
    display: flex;
    height: 30px;
    margin-top: 25px;
}
.header ul li {
    flex-direction: column;
    justify-content: space-around;
    text-align: center;
    font-family: 'PingFangSC-Regular';
    font-size: 14px;
    color: #40545A;
    letter-spacing: -0.42px;
    cursor: pointer;
    margin-right: 50px;
}
.nav {
    width: 100%;
    height: 468px;
    background: url('../images/bannerbg.png') no-repeat top left;
    background-size: 100% 100%;
    padding-top: 182px;
}
.nav h2 {
    margin: 0 0 21px 120px;
    font-family: 'PingFangSC-Semibold';
    font-size: 36px;
    color: #FFFFFF;
    letter-spacing: -1.08px;
}
.nav p {
    margin-left: 120px;
    opacity: 0.8;
    font-family: 'PingFangSC-Semibold';
    font-size: 18px;
    color: #FFFFFF;
    letter-spacing: -0.54px;
}
.nav ul {
    margin-top: 47px;
    margin-left: 120px;
}
.nav ul li {
    float: left;
    width: 184px;
    height: 47px;
    margin-right: 44px;
}
.nav ul li a {
    display: block;
    width: 184px;
    height: 47px;
    line-height: 47px;
    border-radius: 37px;
    font-family: PingFangSC-Semibold;
    font-size: 14px;
    letter-spacing: 0;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
}
.nav ul li:first-child a {
    border: 1px solid #00BCD3;
    color: #00BCD3;
    background: url('../images/andriod.png') no-repeat 50px 10px;
}
.nav ul li:last-child a {
    color: #FFFFFF;
    background: #00BCD3 url('../images/ios.png') no-repeat 50px 10px;
}
.earth {
    height: 770px;
    position: relative;
}
.earth .back {
    position: absolute;
    height: 432px;
    width: 555px;
    border: 4px solid #717879;
    z-index: 10;
    top: 139px;
    left: 87px;
}
.earth .content {
    position: absolute;
    top: 181px;
    left: 70px;
    width: 455px;
    height: 274px;
    z-index: 30;
    padding: 37px 50px;
    background: #fff;
}
.earth .content h2 {
    font-family: 'PingFangSC-Semibold';
    font-size: 20px;
    color: #45484D;
    margin-bottom: 30px;
}
.earth .content p {
    font-family: 'PingFangSC-Semibold';
    font-size: 14px;
    color: #71757C;
    letter-spacing: 0;
    line-height: 29px;
}
.earth img {
    height: 704px;
    width: 791px;
    position: absolute;
    top: 42px;
    right: 42px;
    z-index: 20;
}
.phone {
    width: 100%;
    height: 730px;
    background: #00BCD3 url('../images/introduce_bg.png') no-repeat top left;
    display: flex;
    justify-content: center;
    position: relative;
}
.phone .bg {
    height: 646px;
    width: 343px;
    margin: 45px 69px;
    background: url('../images/phone.png') no-repeat top left;
}
.phone ul {
    margin-top: 159px;
    position: relative;
    z-index: 10;
    width: 25%;
}
.phone ul li {
    margin-bottom: 68px;
}
.phone ul li h2 {
    font-family: 'PingFangSC-Semibold';
    font-size: 20px;
    color: #FFFFFF;
}
.phone ul li p {
    font-family: 'PingFangSC-Semibold';
    font-size: 15px;
    color: #FFFFFF;
    letter-spacing: 0;
    line-height: 29px;
}
.phone .leftTop {
    position: absolute;
    width: 346px;
    height: 340px;
    left: -103px;
    top: -95px;
    background: url('../images/earth2.png') no-repeat top left;
    background-size: 100% 100%;
}
.user {
    height: 631px;
    width: 100%;
    padding-top: 113px;
}
.user h2 {
    font-family: 'PingFangSC-Semibold';
    font-size: 36px;
    color: #45484D;
    text-align: center;
}
.user .userList {
    display: flex;
    justify-content: center;
}
.user .userList div {
    width: 362px;
    margin: 62px 92px 0;
    text-align: center;
}
.user .userList img {
    width: 234px;
    margin-bottom: 30px;
}
.user .userList p {
    font-family: 'PingFangSC-Semibold';
    font-size: 14px;
    color: #45484D;
    height: 60px;
    margin-bottom: 10px;
}
.user .userList h3 {
    font-family: 'PingFangSC-Semibold';
    font-size: 14px;
    color: #45484D;
    font-weight: normal;
    text-align: right;
    margin-top: 38px;
}
.bottom {
    width: 100%;
    height: 180px;
    /*padding-top: 28px;*/
    background: url('../images/foot_bg.png') no-repeat top left;
    background-size: 100% 100%;
}
.bottom p {
    font-family: 'PingFangSC-Semibold';
    font-size: 14px;
    color: #FFFFFF;
    margin-bottom: 12px;
    text-align: center;
}
.bottom p a {
    color: #fff;
    text-decoration: none;
}
.wangAn {
    width: 100%;
    text-align: center;
    font-size: 14px;
    color: #40545A;
    padding-top: 5px;
}
.wangAn span {
    display: inline-block;
    width: 55px;
    height: 30px;
    background: url(../images/962110.jpg) center;
    background-size: 70px;
    vertical-align: middle;
}
@media(min-width:1440px) {
    .common {
        width: 1440px;
        margin: 0 auto;
        overflow: hidden;
    }
    .header, .nav, .earth, .phone, .user {
        width: 1440px;
        margin: 0 auto;
    }
}
@media (min-width:960px) and (max-width:1440px) {
    .common {
        width: 100%;
        overflow: hidden;
    }
    .header, .nav, .earth, .phone, .user {
        width: 100%;
    }
    .user .userList div {
        margin: 62px 70px 0;
    }
}
@media(min-width:768px) and (max-width:960px) {
    .common {
        /* width:960px;  */
        overflow: hidden;
    }
    .header, .nav, .earth, .phone, .user {
        /* width:960px; */
        margin: 0 auto;
    }
}
@media (max-width:768px) {
    .header {
        height: 45px;
        background: #fff;
    }
    .header .logo {
        width: 97px;
        height: 34px;
        margin: 6px;
        float: left;
    }
    .header .logo img {
        height: 100%;
        margin-top: 0;
    }
    .select {
        width: 28px;
        height: 24px;
        top: 12px;
        right: 24px;
        position: absolute;
        background: url('../images/select.png') no-repeat center;
        background-size: 100% 100%;
    }
    .languageSelect {
        height: 36px;
        clear: both;
        font-family: PingFangSC-Regular;
        font-size: 14px;
        color: #40545A;
        letter-spacing: -0.42px;
        line-height: 36px;
        float: right;
        padding-right: 20px;
    }
    .header ul {
        display: none;
    }
    .nav {
        width: 100%;
        height: 171px;
        background: url('../images/bannerbg.png') no-repeat top left;
        background-size: 100% 100%;
        padding-top: 45px;
    }
    .nav h2 {
        margin: 0 0 13px 18px;
        font-family: 'PingFangSC-Semibold';
        font-size: 18px;
        color: #FFFFFF;
        letter-spacing: -0.54px;
    }
    .nav p {
        margin-left: 18px;
        opacity: 0.8;
        font-family: 'PingFangSC-Semibold';
        font-size: 10px;
        color: #FFFFFF;
        letter-spacing: -0.3px;
    }
    .nav ul {
        margin-top: 32px;
        margin-left: 18px;
    }
    .nav ul li {
        float: left;
        width: 160px;
        height: 45px;
        margin-right: 10px;
    }
    .nav ul li a {
        display: block;
        width: 100px;
        height: 45px;
        line-height: 45px;
        border-radius: 37px;
        font-family: PingFangSC-Semibold;
        font-size: 12px;
        letter-spacing: 0;
        cursor: pointer;
        text-decoration: none;
        text-align: right;
        padding-right: 60px;
    }
    .nav ul li:first-child a {
        border: 1px solid #00BCD3;
        color: #00BCD3;
        background: url('../images/andriod.png') no-repeat 50px 10px;
    }
    .nav ul li:last-child a {
        color: #FFFFFF;
        background: #00BCD3 url('../images/ios.png') no-repeat 50px 10px;
    }
    .earth {
        width: 100%;
        height: 697px;
        position: relative;
    }
    .earth .back {
        position: absolute;
        height: 432px;
        width: 318px;
        border: 4px solid #717879;
        z-index: 10;
        top: 203px;
        left: 50%;
        margin-left: -159px;
    }
    .earth .content {
        position: absolute;
        top: 245px;
        left: 0;
        width: 100%;
        /*height:342px;*/
        z-index: 10;
        padding: 37px 0;
        background: #fff;
    }
    .earth .content h2 {
        width: 300px;
        font-family: 'PingFangSC-Semibold';
        font-size: 16px;
        color: #45484D;
        text-align: center;
        margin: 0 auto 30px;
    }
    .earth .content p {
        width: 300px;
        margin: 0 auto;
        font-family: 'PingFangSC-Semibold';
        font-size: 12px;
        color: #71757C;
        letter-spacing: 0;
        line-height: 29px;
        text-align: center;
    }
    .earth img {
        height: 283px;
        width: 318px;
        position: absolute;
        top: 25px;
        left: 50%;
        margin-left: -159px;
        z-index: 20;
    }
    .phone {
        width: calc(100% - 34px);
        height: 775px;
        display: block;
        background: url('../images/mask@2x.png') no-repeat top left;
        background-size: 100% 100%;
        position: relative;
        /* padding-top:134px;  */
        margin-top: 450px;
        padding: 134px 17px 0;
    }
    .phone .bg {
        position: absolute;
        top: -453px;
        left: 50%;
        margin: 0;
        margin-left: -146.5px;
        height: 552px;
        width: 293px;
        background: url('../images/phone@2x.png') no-repeat top left;
        background-size: 100% 100%;
        z-index: 10;
    }
    .phone ul {
        margin-top: 0;
        position: relative;
        z-index: 10;
        width: auto;
    }
    .phone ul li {
        margin-bottom: 55px;
    }
    .phone ul li h2 {
        text-align: center;
        font-family: 'PingFangSC-Semibold';
        font-size: 18px;
        color: #FFFFFF;
    }
    .phone ul li p {
        font-family: 'PingFangSC-Semibold';
        font-size: 12px;
        color: #FFFFFF;
        letter-spacing: 0;
        text-align: center;
        line-height: 29px;
    }
    .phone .leftTop {
        position: absolute;
        width: 236px;
        height: 257px;
        left: 0;
        top: -71px;
        background: url('../images/earth2@2x.png') no-repeat top left;
        background-size: 100% 100%;
    }
    .user {
        height: 513px;
        width: 100%;
        padding-top: 42px;
    }
    .user h2 {
        font-family: 'PingFangSC-Semibold';
        font-size: 20px;
        color: #45484D;
        text-align: center;
        margin-bottom: 22px;
    }
    .user .userList {
        display: flex;
        justify-content: center;
        flex-direction: column;
    }
    .user .userList div {
        width: 362px;
        margin: 28px auto;
        text-align: center;
        position: relative;
    }
    .user .userList .first {
        width: 60px;
        float: left;
        margin-left: 24px;
        margin-right: 12px;
    }
    .user .userList .sec1 {
        position: absolute;
        top: 70px;
    }
    .user .userList .sec2 {
        position: absolute;
        top: 100px;
    }
    .user .userList .second {
        width: 118px;
        float: left;
        left: 110px;
    }
    .user .userList p {
        width: 236px;
        float: left;
        font-family: 'PingFangSC-Semibold';
        font-size: 12px;
        color: #45484D;
        margin-bottom: 10px;
        height: auto;
        margin-top: 20px;
    }
    .user .userList h3 {
        font-family: 'PingFangSC-Semibold';
        font-size: 14px;
        color: #45484D;
        font-weight: normal;
        text-align: right;
        position: absolute;
        margin-left: 110px;
        margin-top: 0;
    }
    .user .userList h3 span {
        display: none;
    }
    .bottom {
        width: 100%;
        height: 246px;
        padding-top: 15px;
        background: #999 url('../images/group_7@2x.png') no-repeat top left;
        background-size: 100% 100%;
    }
    .bottom p {
        width: 55%;
        font-family: 'PingFangSC-Semibold';
        font-size: 10px;
        color: #FFFFFF;
        margin: 0 auto 12px;
        text-align: center;
    }
    .bottom p a {
        color: #fff;
        text-decoration: none;
    }
}
.nan{
	width: 100%;
    height: 468px;
    background: url(../images/1.jpg) no-repeat top left;
    background-size: 100% 100%;
    padding-top: 182px;"
}
.nam{
	width: 100%;
    height: 468px;
    background: url(../images/2.jpg) no-repeat top left;
    background-size: 100% 100%;
    padding-top: 182px;"
}