/*====================导航*********/
.header{
    width:100%;
    position:fixed;
    top:0;
    left:0;
    z-index:999;
    height:110px;
    padding: 0 10%;
    /*background: rgba(28, 35, 39, 0.8);*/
}
/*左侧logo*/
.header .left{
    width: 20%;
    margin-top: 26px;
}
.header .left a img{
    height: 50px;
    margin-top: 2px;
}
.header .left .img2{
    display: none;
}
/*右侧*/
.header .nav{
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    height: 100%;
    line-height: 110px;
    display: block;
}
.header .navbar_nav li{
    float:left;
    position: relative;
    display: block;
}
.header .navbar_nav li:after{
    content: "";
    width: 0;
    height: 2px;
    background: #023e88;
    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 25px;
    display: block;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    color: #fff;
    font-size: 16px;
}
.header .navbar_nav li:hover a{
    color: #023e88;
}
.header .navbar_nav li.dropdown{
    display: inherit;
    position: relative;
}
.header .navbar_nav li.dropdown .jt{
    width: 20px;
    height: 20px;
    background-size: 100% 100%;
    display: block;
}
.header .navbar_nav li.dropdown .dropdown_menu{
    position: fixed;
    top:110px;
    width: 100%;
    background: url("../images/menu_bg1.jpg") repeat-y center;
    box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38);
    left: 0;
    transition: all 0.5s;
    height: 0;
    overflow: hidden;
}
.header .navbar_nav li.dropdown .dropdown_menu.indexNews{
    background: url("../images/menu_bg2.jpg") repeat-y center;
}
.header .navbar_nav li.dropdown .dropdown_menu.indexSever{
    background: url("../images/menu_bg3.jpg") repeat-y center;
}
.header .navbar_nav li.dropdown .dropdown_menu.indexQuality{
    background: url("../images/menu_bg4.jpg") repeat-y center;
}
.header .navbar_nav li.dropdown .dropdown_menu.indexHuman{
    background: url("../images/menu_bg5.jpg") repeat-y center;
}
.header .navbar_nav li.dropdown .dropdown_menu.indexDevelopment{
    background: url("../images/menu_bg6.jpg") repeat-y center;
}

.header .navbar_nav li.dropdown:hover .dropdown_menu{
    height: 300px;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
}
.header .navbar_nav li.dropdown .dropdown_menu a{
    font-size: 14px;
    color: #666;
    line-height: 20px;
    text-align: left;
    margin-bottom: 2px;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_center{
    width: 80%;
    margin: 0 auto;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_left{
    height: 300px;
    width: 28%;
    float: left;
    background-color: #f7f7f7;
    box-sizing: border-box;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_left .menu_left_top{
    margin-top: 50px;
}

.header .navbar_nav li.dropdown .dropdown_menu .menu_left h3{
    font-size: 20px;
    margin: 0 30px 24px 30px;
    text-align: center;
    border-bottom: 1px solid #d6d6d6;
    padding-bottom: 18px;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_left a{
    font-size: 14px;
    line-height: 32px;
    text-align: center;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_right{
    height: 300px;
    width: 70%;
    float:right;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_right{
    height: 300px;
    padding-left: 40px;
    width: 70%;
    float:right;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_right h3{
    margin-top: 50px;
    font-size: 24px;
    margin-bottom: 20px;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_right p{
    font-size: 14px;
    line-height: 1.8;
    width: 70%;
    color: #333;
}
.header .navbar_nav li.dropdown .dropdown_menu .menu_right a{
    font-size: 14px;
    border: 1px solid #cccccc;
    display: block;
    border-radius: 20px;
    text-align: center;
    width: 240px;
    height: 40px;
    line-height: 40px;
    margin-top: 40px;
}
.header .navbar_nav li a i{
    padding-right: 10px;
}

/*白色背景的头部*/
.header.on{
    background: #fff;
    border-bottom: 1px solid #ccc;
}
.header.on .left .img1{
    display: none;
}
.header.on .left .img2{
    display: block;
}
.header.on .navbar_nav li a{
    color: #333;
}
.header.on .navbar_nav li:hover a{
    color: #333;
}
#navToggle{
    display: none;
}

.m_nav{
    position: fixed;
    box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38);
    width: 100%;
    height: 100%;
    background: #fff;
    -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{
    height: 50px;
    display: block;
    margin:30px auto;
}
.m_nav .ul{
    margin-top: 30px;
}
.m_nav .ul li{
    padding: 0 20px;
    border-bottom: 1px solid #f5f5f5;
    -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:nth-child(7) {
    -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:nth-child(8) {
    -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:nth-child(9) {
    -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:nth-child(9) i{
    margin-right: 10px;
}
.m_nav .ul li a{
    text-decoration: none;
    color: #333;
    font-size: 16px;
    height: 50px;
    line-height: 50px;
    width: 100%;
    display: flex;
    justify-content: space-between;
}
.nav_icon{
    transform: rotate(90deg);
}
.m_nav .ul li .dropdown_menu a{
    display: block;
    text-decoration: none;
    color: #666;
    font-size: 13px;
    height: 50px;
    line-height: 50px;
    width: 100%;
    padding-left: 20px;
}
.m_nav .ul li .dropdown_menu{
    display: none;
    background-color: #f6f6f6;
}
.m_nav .ul li.dropdown.active .dropdown_menu{
    display: block;
}

.m_nav .ul li .dropdown_menu a:last-child{
    border: none;
}
.banner{
    width: 100%;
}
.banner img{
    width: 100%;
}

/*兼容多端样式*/
@media screen and (min-width:1570px) and (max-width: 1680px){
    .header .navbar_nav li a{
        padding: 0 18px;
    }
}
@media screen and (min-width: 1200px) and (max-width: 1570px){
    .header .navbar_nav li a {
        text-decoration: none;
        height: 100%;
        padding: 0 12px;
        display: block;
        -webkit-transition: 0.5s;
        -moz-transition: 0.5s;
        -o-transition: 0.5s;
        transition: 0.5s;
        color: #fff;
        font-size: 16px;
    }
    .header .left a img {
        height: 44px;
        margin-top: 6px;
    }

}
@media screen and (min-width: 992px) and (max-width: 1200px){
    .header .navbar_nav li a {
        text-decoration: none;
        height: 100%;
        padding: 0 10px;
        display: block;
        -webkit-transition: 0.5s;
        -moz-transition: 0.5s;
        -o-transition: 0.5s;
        transition: 0.5s;
        color: #fff;
        font-size: 14px;
    }
    .header .left a img {
        height: 34px;
        margin-top: 6px;
    }
}
@media screen and (max-width: 992px){
    .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: 19px;
    }
    .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: #000;
    }
    .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;
    }
    .header .left {
        width: 20%;
        margin-top: 4px;
    }
    .header .left a img {
        height: 32px;
        margin-top: 6px;
    }
    .header {
        width: 100%;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 999;
        height: 50px;
        padding: 0 10%;
    }
}