* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

html,
body {
    max-width: 1920px;
}

a {
    text-decoration: none;
    cursor: pointer;
    display: inline-block;
    width: 100%;
    height: 100%;
    color: #fff;
}

a:hover {
    color: #FFF000;
}

ul,
li {
    list-style: none;
}

input {
    background: none;
    outline: none;
    border: none;
}

.clearfix:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

.clearfix {
    zoom: 1;
}


/* 头部开始 */

.banner {
    height: 580px;
}

.nav {
    width: 100%;
    height: 100px;
}

.top {
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
    /* display: flex; */
}

.logo {
    background: url(../images/common/logo.png) no-repeat center;
    width: 194px;
    height: 60px;
    background-size: contain;
    float: left;
}

.nav_title {
    height: 100%;
    float: right;
    flex: 1;
    /* margin-left: 100px; */
}

.nav_title ul {
    float: left;
}

.nav_title ul li {
    float: left;
    font-size: 30px;
    font-family: PingFang SC;
    font-weight: 400;
    text-align: center;
    line-height: 60px;
    margin-right: 40px;
}

.search_close,
.open_top {
    /* width: 440px; */
    padding: 0 20px;
    background-color: #fff;
    line-height: 60px;
    display: flex;
    align-items: center;
    height: 60px;
    border-radius: 30px;
    -webkit-border-radius: 30px;
    -moz-border-radius: 30px;
    -ms-border-radius: 30px;
    -o-border-radius: 30px;
}

.search_open {
    height: 180px;
    background-color: #fff;
    border-radius: 30px 30px 0 0;
    -webkit-border-radius: 30px 30px 0 0;
    -moz-border-radius: 30px 30px 0 0;
    -ms-border-radius: 30px 30px 0 0;
    -o-border-radius: 30px 30px 0 0;
}

.search_close::after,
.open_top::after {
    width: 31px;
    height: 32px;
    background: url(../images/common/search.png) no-repeat;
    background-size: contain;
    content: "";
    display: block;
}

.search_title {
    font-size: 22px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #333333;
}

#open,
#close {
    width: 16px;
    height: 10px;
    margin: 0 16px 0 9px;
    background-size: contain;
    display: inline-block;
}

#open {
    background: url(../images/common/open.png) no-repeat center;
}

#close {
    background: url(../images/common/close.png) no-repeat center;
}

.search_input input {
    font-size: 22px;
    color: #999;
    line-height: 60px;
}

.open_cont ul li a {
    border-bottom: 1px solid #999;
    height: 40px;
    line-height: 40px;
    padding-left: 22px;
    color: #999;
}


/* 头部结束 */

.content {
    width: 1200px;
    padding: 0 20px;
    margin: 0 auto 120px;
}


/* 尾部开始 */

.footer {
    width: 100%;
    height: 499px;
    background: rgba(0, 0, 0, .9);
    padding-top: 40px;
}

.footer_nav {
    width: 1200px;
    margin: 0 auto 90px;
}

.footer .nav_title {
    float: right;
}

.footer .nav_title ul li {
    font-size: 26px;
}

.footer_cont {
    width: 1200px;
    margin: 0 auto;
    padding: 0 75px;
    font-size: 14px;
    font-family: PingFang SC;
    font-weight: 300;
    color: #999999;
}

.footer_cont p:nth-child(2) {
    margin-bottom: 40px;
}

.footer_cont p:nth-child(3) {
    margin-bottom: 23px;
}

.footer_cont p:nth-child(3),
.footer_cont p:nth-child(4) {
    text-align: center;
    color: #698CF0;
}

.footer_cont p:nth-child(4) a {
    display: inline-block;
    width: 75px;
    font-size: 16px;
    font-weight: 400;
    color: #698CF0;
}

.footer_cont p:nth-child(4) a:hover {
    color: #FFF000;
}


/* 尾部结束 */

.list_title {
    font-size: 32px;
    font-family: PingFang SC;
    font-weight: 600;
    color: #333;
    text-align: center;
}

.list_title span {
    color: #698CF0;
}

.list_title::after {
    width: 63px;
    height: 10px;
    background: url(../images/common/mid_line.png) no-repeat;
    background-size: contain;
    content: "";
    display: block;
    margin: 10px auto 40px;
}