@charset "utf-8";

body,p,h1,h2,h3,h4,h5,h6,ul,li,dl,dt,dd,pre{
    margin:0;
    padding:0;
    border:none;
    list-style:none;
    box-sizing: border-box;
}
body{
    font-family: "microsoft yahei","Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.42857143;
    color: #333;
    min-width: 1200px;
}
a{
    color: #333;
    text-decoration:none;
    transition: .3s;
}
a:hover{
    color: #007ea8;
    text-decoration:none;
}
input,button{
    outline: none;
    border: none;
}
img{
    vertical-align: middle;
    border: 0;
    max-width: 100%;
    transition: .3s;
}
table{
    border-collapse: collapse;
}
table tr th, table tr td{
    padding: 5px 10px;
    border: 1px solid gray;
}
video{
    object-fit: fill;
}
.lf{
    float: left;
}
.rt{
    float: right;
}
.container{
    width: 1400px;
    margin: 0 auto;
    position: relative;
}
.container:before,
.container:after{
    content: '';
    display: table;
    clear: both;
}
.ellipsis{
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
/*头部*/
.header{
    position: relative;
}
.header .top{
    height: 176px;
    background: url(../images/header-bg.jpg) no-repeat center center;
    background-size: 100%;
}
.header .logo{
    float: left;
    line-height: 176px;
}
.header .search{
    float: right;
    margin-top: 65px;
}
.header form{
    position: relative;
}
.header input[type="text"]{
    width: 275px;
    height: 30px;
    padding: 0 36px 0 10px;
    background: #FDFEFF;
    box-shadow: 0 2px 6px 0 rgba(0,0,0,0.15);
    border-radius: 15px;
    box-sizing: border-box;
}
.header input[type="submit"]{
    position: absolute;
    top: 0;
    right: 0;
    width: 36px;
    height: 30px;
    cursor: pointer;
    background: url(../images/search.png) no-repeat center center;
}

.header .toggle{
    display: none;
}
/*导航栏*/
.nav{
    height: 60px;
    border-bottom: 1px solid #ddd;
    box-sizing: border-box;
}
.menu{
    display: flex;
}
.menu>li{
    display: inline-flex;
    position: relative;
    flex-grow: 1;
}
.menu>li>a{
    flex-grow: 1;
    line-height: 60px;
    color: #666;
    font-size: 18px;
    text-align: center;
}
.menu>li>a:hover{
    color: #007ea8;
}
.menu>li:before{
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 3px;
    background: #007ea8;
    transition: .3s;
}
.menu>li:hover:before{
    width: 100%;
}
.menu .second-menu{
    position: absolute;
    top: 60px;
    left: 0;
    min-width: 100%;
    width: max-content;
    background-color: rgba(0,0,0,.6);
    display: none;
    z-index: 999;
}
.menu .second-menu li a{
    display: block;
    line-height: 50px;
    color: #fff;
    font-size: 16px;
    text-align: center;
    padding: 0 10px;
    border-top: 1px solid #007ea8;
}
.menu .second-menu li:first-of-type a{
    border-top: none;
}
.menu .second-menu a:hover{
    background-color: rgba(0, 126, 168, 0.6);
}

/*尾部*/
.footer{
    color: #fff;
    font-size: 18px;
    height: 258px;
    padding-top: 40px;
    box-sizing: border-box;
    background: #007EA7 url(../images/footer-bg.jpg) no-repeat;
}
.footer ul{
    display: flex;
}
.footer ul li{
    width: 33.33%;
}
.footer ul li:first-of-type{
    display: inline-flex;
    justify-content: center;
    align-items: center;
}
.footer ul li h3{
    font-size: 26px;
    font-weight: 400;
    margin-bottom: 5px;
}
.footer ul li select{
    width: 160px;
    height: 24px;
    border: none;
    outline: none;
}
.footer .copyright{
    margin-top: 40px;
    text-align: center;
}

/*返回顶部*/
.toTop{
    position: fixed;
    right: 15px;
    bottom: -100px;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    color: #fff;
    font-size: 24px;
    font-weight: bolder;
    font-family: '黑体';
    background: rgba(0,0,0,.6);
    border-radius: 5px;
    transform: rotate(90deg);
    cursor: pointer;
    transition: .3s;
    z-index: 99;
}

.section{
    min-height: calc(100vh - 494px);
}