html {
    font-size: 100px;
}
:root{--mainColor: #2da6df;}
.mainColor {
    color: #2da6df
}
header {
    top: 0; left: 0;
    background-color: transparent;
    z-index: 2;
    width: 100%; height: 1.42rem;
    font-size: 0;
    position: fixed;
    transition: all .5s ease;
}
header .logo {
    margin: .4rem 0 0 5.57%;
    width: 3.04rem;
    display: inline-block;
    vertical-align: top;
    color: #fff;
    line-height: 1.42rem;
}
header .logo img {
    margin-top: 0rem;
    margin-right: .08rem;
    width: .7rem; height: .96rem;
    float: left;
}
header .logo .ch {
    margin: .3rem 0 .06rem;
    font-size: .28rem;
    color: #fff;
    vertical-align: top;
    line-height: 1;
    display: block;
    letter-spacing: 4px;
    font-weight: bold;
}
header .logo .en {
    font-family: calibri;
    font-size: .16rem;
    color: #fff;
    vertical-align: top;
    line-height: 1;
}
header .menu {
    display: none;
}
header .nav-contact {
    margin: .2rem 0 .16rem;
    height: .4rem; line-height: .4rem;
    color: #fff;
    text-align: right;
}
header .nav-contact .phone {
    margin-right: .27rem;
    font-size: .24rem;
    vertical-align: middle;
    text-align: left;
}
header .nav-contact .phone i::before {
    font-size: .24rem;
}
header .nav-contact .contact-button {
    font-size: .16rem;
    width: 2.7rem; height: .4rem;
    background-color: var(--mainColor);
    border-radius: .16rem;
    text-transform: uppercase;
    box-shadow: 0 0 .15rem rgba(0, 0, 0, .2);
    vertical-align: middle;
    display: inline-flex;
    justify-content: space-around;
    align-items: center;
}
header .nav-contact .contact-button a {
    color: #fff;
}
header .nav-contact .contact-button i::before {
    font-size: .18rem;
    margin-right: .07rem;
}
header .nav-contact .contact-button > *{
    vertical-align: middle;
}


header .nav-contact .contact-button a{
    display: inline-flex;align-items: center;
}
header .nav-contact .contact-button a .icon-changyonglogo27{
    font-size: .35rem;
    color: #fff;
}
header .nav-contact .contact-button a .icon-changyonglogo27:hover{
    color: #f8742c;
}






header nav {
    position: absolute;
    top: 0; right: 2.7%;
    display: inline-block;
    vertical-align: top;
}
header ul {
    display: flex;
}
header ul li {
    font-weight: bold;
}
header .cur {
    color: #333!important;
}
header ul li a {
    padding: 0 .16rem;
    text-align: center;
    height: .4rem;
    line-height: .4rem;
    display: inline-block;
    color: #fff;
    font-size: .18rem;
    letter-spacing: 1px;
}
header ul li a:hover {
    color: #333;
}
header ul li select {
    position: relative;
    top: 50%;
    transform: translateY(-50%);
    background-color: transparent;
    border: 0;
    color: #fff;
    font-size: .16rem;
    font-weight: bold;
    line-height: .4rem;
    display: inline-block;
    height: .3rem;
    outline: none;
    text-align: justify;
    text-align-last:justify;
}
header ul li select option {
    color: #333;
    text-align: justify;
    text-align-last:justify;
}
select::-ms-expand { 
    display: none; 
}
.middle {
    height: .96rem;
    background-color: #fff;
    border-bottom: 1px solid #ccc;
    transition: height .2s ease-in-out, background-color .3s ease-in-out .2s, border .3s ease-in-out .2s;
}
.middle .logo {
    margin-top: 0;
}
.middle .logo .ch,
.middle .logo .en {
    color: var(--mainColor);
}
.middle .nav-contact {
    display: none;
}
.middle ul li a {
    color: var(--mainColor);
    line-height: .96rem;
}

@media screen and (max-width: 834px) {
header .cur {
    color: #fff!important;
}
header a {
    position: relative;
}
header ul li a:hover {
    color: #fff;
}
header .cur::after {
    content: '\e608';
    color: #fff;
    font-size: .18rem;
    position: absolute;
    left: 1rem; top: 50%;
    transform: translateY(-50%) rotate(90deg);
    font-family: iconfont;
}
header {
    height: .65rem;
}
header .logo {
    margin-left: 4%;
    margin-top: 0;
    position: absolute;
    top: .05rem;
    z-index: 2;
}
header .logo img {
    margin-right: .1rem;
    width: .45rem; height: .58rem;
}
header .logo .ch {
    margin-top: .14rem;
    font-size: .2rem;
    letter-spacing: .04rem;
}
header .logo .en {
    font-size: .12rem;
}
header .menu {
    margin: .18rem 6% 0 0;
    display: block;
    float: right;
    font-size: .36rem;
    color: #fff;
    z-index: 2;
    position: relative;
}
header nav {
    padding-top: .4rem;
    box-sizing: border-box;
    position: absolute;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background-color: #fafafa;
    background-color: #333;
    opacity: 0;
    pointer-events: none;
    transition: opacity .4s ease-in-out;
}
header ul {
    margin-top: .8rem;
    flex-wrap: wrap;
}
header ul li {
    width: 100%;
}
header ul li a {
    width: 100%;
    text-align: left;
    line-height: 3;
    line-height: 8vh;
    font-size: .18rem;
    font-weight: normal;
    height: auto;
}
header .nav-contact {
    height: auto;
    position: absolute;
    bottom: .1rem;
}
header .nav-contact .phone {
    margin: 0;
    display: block;
    font-size: .22rem;
}
header .nav-contact .phone .iconfont {
    margin-right: .1rem;
}
header .nav-contact .contact-button {
    float: left;
    background-color: transparent;
    text-align: left;
    font-size: .21rem;
    width: 100%;
    box-shadow: 0 0 0.15rem transparent;
}
header .nav-contact .contact-button i::before {
    font-size: .22rem;
    margin-right: .12rem;
}
header nav.open {
    padding: 0 6%;
    box-sizing: border-box;
    display: block;
    opacity: 1;
    pointer-events: auto;
}
.middle-mobile  .menu {
    font-size: .3rem;
}
.middle-mobile {
    background-color: #fff;
    border-bottom: 1px solid #ccc;
}
.middle-mobile .logo .ch,
.middle-mobile .logo .en,
.middle-mobile  .menu {
    color: var(--mainColor);
}
.middle-mobile .logo .ch.white,
.middle-mobile .logo .en.white,
.middle-mobile  .menu.white {
    color: #fff;
}

}