/* 公共部分 */
button { outline: none; }

a { text-decoration: none; }

.top-img { height: 320px; width: 100%; min-width: 1200px; display: block; background: url("/images/aboutus_pic.jpg") no-repeat center center; }

.site-nav { width: 100%; height: 80px; min-width: 1200px; position: fixed; top: 0px; z-index: 1000; background-color: white !important; }

.site-nav-content { margin: 0 auto; height: 80px; width: 1200px; }

.logo { margin-top: 24px; float: left; }

.navigate-bar { height: 80px; }

.navigate-bar-content { height: 44px; line-height: 44px; float: right; margin-top: 18px; }
    .navigate-bar-content > li,
    .navigate-bar-content > li > a { text-decoration: none; font-size: 16px; color: #000000; display: block; position: relative; }

.navigate-bar .navigate-bar-content li { float: left; list-style: none; padding: 0 30px; cursor: pointer; position: relative; }

.navigate-bar .navigate-bar-content > li.active,
.navigate-bar .navigate-bar-content > li.active > a,
.navigate-bar .navigate-bar-content > li:hover,
.navigate-bar .navigate-bar-content > li:hover > a { color: #4479f2; }

.down_arrow, .down_active_arrow, .up_active_arrow { width: 7px; height: 4px; display: none; margin-left: 6px; }

.navigate-bar .navigate-bar-content li .down_arrow { display: inline-block; }

.navigate-bar .navigate-bar-content li:hover .down_arrow,
.navigate-bar .navigate-bar-content li.active .down_arrow { display: none; }

.navigate-bar .navigate-bar-content li:hover .up_active_arrow { display: inline-block; }

.navigate-bar .navigate-bar-content li.active .down_active_arrow { display: inline-block; }

.navigate-bar .navigate-bar-content li.active:hover .down_active_arrow { display: none; }
/* 页面底部 */
.bottom-bar { bottom: 0px; width: 100%; min-width: 1200px; padding-top: 10px; background-color: #f5f5f5; }

.bottom-bar-top { width: 1200px; margin: 0 auto; border-bottom: 1px solid #efefef; padding-bottom: 51px; }

.bottom-bar .foot_logo { float: left; margin-top: 32px; }

.bottom-bar .bottom-bar-content { text-align: center; font-size: 0px; margin-top: 42px; float: right; }
    .bottom-bar .bottom-bar-content a { font-size: 18px; color: #4e4c4c; display: inline-block; line-height: 1.5; }

.bottom-li { color: #fff; padding-right: 19px; padding-left: 19px; display: inline-block; }

.bottom-bar-num { font-size: 14px; text-align: center; padding: 28px 0; color: #999; }

.bottom_box { width: 100%; height: 372px; position: relative; }

.bottom_img { width: 100%; height: 372px; display: block; }

.bottom_icon_box { width: 1200px; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); }

.bottom_icon { width: 240px; height: 176px; display: block; margin-right: 276px; }

.bottom_icon_k { width: 210px; height: 180px; display: block; margin-right: 277px; }

.bottom_icon:last-child { margin-right: 0px; }