/*body{background-color: #1b1b1b}*/
:root {
    --header-height: 60px;
    --m-header-height: 60px;
}

.header{
    width:100%;
    /*position:fixed;*/
    top:0;
    left:0;
    z-index:999;
    height: var(--header-height);
    padding: 0 30px;
    /*background: rgba(28, 35, 39, 0.8);*/
}

.header .left{
    width: 12%;
}
.header .left a{
    height: var(--header-height);
    display: table-cell;
    vertical-align: middle;}

.header .fl span{
    color: #FFFFFF;
    line-height: var(--header-height);
}

.header .left a img{
    max-height: 90%;
    /*margin-top: 6px;*/
    max-width: calc(100vw - 100px);
}

.header .left .img1{
    filter: invert(1) grayscale(100%) brightness(200%);
}

.header .left img{
    margin-left: -30px;
}


.header .left .img2{
    display: none;
}

.header .nav{
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    height: 100%;
    line-height: var(--header-height);
    display: block;
}
.header .navbar_nav li{
    float:left;
    position: relative;
    display: block;
}
.header .navbar_nav li:after{
    content: "";
    width: 0;
    height: 2px;
    background: var(--app-main-color);
    position: absolute;
    bottom: 0;
    left: 0;
    transition: all 0.5s ease 0s;
}
.header .navbar_nav li:hover:after{
    width: 100%;
}
.header .navbar_nav li a{
    text-decoration: none;
    height: 100%;
    padding: 0 15px;
    display: block;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    color: #fff;
    font-size: 1rem;;
}
.header .navbar_nav li:hover a{
    color:  var(--app-main-color);
}
.header .navbar_nav li.dropdown{
    display: inherit;
    position: relative;
}
.header .navbar_nav li.dropdown .jt{
    width: 20px;
    height: 20px;
    background: url(i/top.png) no-repeat;
    background-size: 100% 100%;
    display: block;
}
.header .navbar_nav li.dropdown .dropdown_menu{
    display: none;
    position: absolute;
    top:var(--header-height);
    width: 100%;
    background: #fff;
    box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38);
    width: 120%;
    left: -10%;
    z-index:100;
}
.header .navbar_nav li.dropdown .dropdown_menu a{
    font-size: .875rem;
    color: #666;
    padding: 0 10px;
    line-height: 2.5rem;
    text-align: center;
    background: #fff;
    margin-bottom: 2px;
}
.header .navbar_nav li.dropdown:hover .dropdown_menu{
    display: block;
    background: #f3f3f3;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
}
.header .navbar_nav li.dropdown:hover .dropdown_menu a{
    color: #666;
}
.header .navbar_nav li.dropdown:hover .dropdown_menu a:hover{
    color: #fff;
    background:  var(--app-secondary-color);
}

.header.on{
    background: #fff;
    border-bottom: 1px solid #ccc;
}
.header.on .left .img1{
    display: none;
}
.header.on .left .img2{
    display: block;
}

.header.on .fl span{
    color: #333;
    line-height: var(--header-height);
}

.header.on .navbar_nav li a{
    color: #333;
}
.header.on .navbar_nav li:hover a{
    color: var(--app-main-color);
}
#navToggle{
    display: none;
}

.m_nav{
    position: fixed;
    top: 0px;
    box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38);
    width: 100%;
    height: 100%;
    background: #fff;
    transition: all ease 0.5s;
    -webkit-transition: all ease 0.5s;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
    margin-top: 0;
    overflow-y: auto;
    transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms;
    top: 0;
    transform: translateX(100%);
}
.m_nav.open{
    transform: translateX(0);
}
.m_nav .top{
    height: 60px;
    padding: 20px;
    box-sizing: border-box;
}
.m_nav .top .closed{
    width: 30px;
    height: 30px;
    vertical-align: middle;
    float:right;
    cursor: pointer;
}
.m_nav .logo{
    width: 100%;
    margin:0 auto;
}
.m_nav .logo img{
    max-width: 100%;
    max-height: 100px;
    display: block;
    margin:30px auto;
}
.m_nav .ul{
    margin-top: 30px;
}
.m_nav .ul li{
    padding: 0 20px;
    border-bottom: 1px solid #f5f5f5;
    transform: translateY(0);
    -webkit-transform: translateY(100%);
    transform: translateY(100%);
    -webkit-transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms;
    opacity: 0;
}
.m_nav.open .ul li{
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
}
.m_nav .ul li:nth-child(1) {
    -webkit-transition: all .2s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all .2s cubic-bezier(.77, 0, .175, 1) 0ms;
}
.m_nav .ul li:nth-child(2) {
    -webkit-transition: all .4s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all .4s cubic-bezier(.77, 0, .175, 1) 0ms;
}
.m_nav .ul li:nth-child(3) {
    -webkit-transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms;
}
.m_nav .ul li:nth-child(4) {
    -webkit-transition: all .8s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all .8s cubic-bezier(.77, 0, .175, 1) 0ms;
}
.m_nav .ul li:nth-child(5) {
    -webkit-transition: all 1.0s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all 1.0s cubic-bezier(.77, 0, .175, 1) 0ms;
}
.m_nav .ul li:nth-child(6) {
    -webkit-transition: all 1.2s cubic-bezier(.77, 0, .175, 1) 0ms;
    transition: all 1.2s cubic-bezier(.77, 0, .175, 1) 0ms;
}
.m_nav .ul li a{
    display: block;
    text-decoration: none;
    color: #333;
    font-size: 1rem;;
    height: var(--m-header-height);
    line-height: var(--m-header-height);
    width: 100%;
}
.m_nav .ul li .dropdown_menu{
    display: none;
    background: #f5f5f5;
}
.m_nav .ul li.dropdown.active .dropdown_menu{
    display: block;
}
.m_nav .ul li .dropdown_menu a{
    display: block;
    height: var(--m-header-height);
    line-height: var(--m-header-height);
    padding: 0 40px;
    box-sizing: border-box;
    border-bottom: 1px solid #ffffff;
}
.m_nav .ul li .dropdown_menu a:hover{
    background-color:  #ededed;
}
.m_nav .ul li .dropdown_menu a:last-child{
    border: none;
}
.banner{
    width: 100%;
}
.banner img{
    width: 100%;
}


.header .left a img.w1200{
    display: none;
}
.header.on .left a img.w1200{
    display: none;
}

@media screen and (max-width: 1200px) {
    .header .fl span{
        display: none;
    }

    .header .left a img{
        display: none;
    }
    .header .left a .img1.w1200{
        display: block;
    }

    .header.on .left .img2{
        display: none;
    }
    .header.on .left .img2.w1200{
        display: block;
    }
}
@media screen and (max-width: 992px){

    .header .left a .img1.w1200{
        display: none;
    }

    .header .left a .img1{
        display: block;
    }

    .header.on .left a .img1.w1200{
        display: none ;
    }

    .header.on .left a .img2.w1200{
        display: none ;
    }

    .header.on .left .img2{
        display: block;
    }

    .header{
        padding: 0 10px;
    }
    .header #navToggle {
        height: 100%;
        padding: 9px 15px;
        margin-right: -15px;
        display: inline-block;
        float: right;
    }
    .header #navToggle span {
        position: relative;
        width: 25px;
        height: 1px;
        margin-top: 22px;
        /*margin-top: 40px;*/
    }
    .header #navToggle span:before,
    .header #navToggle span:after {
        content: '';
        position: relative;
        width: 100%;
        height: 1px;
        left: 0;
    }
    .header #navToggle span,
    .header #navToggle span:before,
    .header #navToggle span:after {
        -webkit-transition: 0.3s;
        -moz-transition: 0.3s;
        -o-transition: 0.3s;
        transition: 0.3s;
        display: block;
        background: #4f4f4f;
    }
    .header #navToggle span:before {
        top: 8px;
    }
    .header #navToggle span:after {
        bottom: 10px;
    }
    .header #navToggle.open span:before {
        top: 10px;
        -webkit-transform: translateY(-11px) rotate(-45deg);
        -moz-transform: translateY(-11px) rotate(-45deg);
        -ms-transform: translateY(-11px) rotate(-45deg);
        -o-transform: translateY(-11px) rotate(-45deg);
        transform: translateY(-11px) rotate(-45deg);
    }
    .header #navToggle.open span:after {
        bottom: 12px;
        -webkit-transform: translateY(10px) rotate(45deg);
        -moz-transform: translateY(10px) rotate(45deg);
        -ms-transform: translateY(10px) rotate(45deg);
        -o-transform: translateY(10px) rotate(45deg);
        transform: translateY(10px) rotate(45deg);
    }
    .header #navToggle.open span {
        background: none;
    }
    .header #navToggle.open span:before,
    .header #navToggle.open span:after {
        background: #4f4f4f;
    }

    .header .nav{
        display: none;
    }

    .banner img{
        height: 600px;
        object-fit: cover;
    }
}