/*html5*/
article,
aside,
dialog,
footer,
header,
section,
footer,
nav,
embed,
figure,
menu {
    display: block
}

* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    font-weight: normal;
}

.bg_f5f6f9 {
    background: #f5f6f9;
}

img {
    border-style: none;
}

em {
    font-style: normal;
}

body {
    font-size: 14px;
    font-family: "微软雅黑";
}

.w1200 {
    width: 1200px;
    margin: auto;
}

.red {
    color: #ee6552;
}

.blue {
    color: #105cfb;
}

.col_gray {
    color: #8c8c92;
}

.col_333 {
    color: #333;
}

.col_666 {
    color: #666;
}

.col_white {
    color: #fff;
}

.mar_b20 {
    margin-bottom: 20px;
}

.mar_t20 {
    margin-top: 20px;
}

.par_t100 {
    padding-top: 100px;
}

.par_b100 {
    padding-bottom: 100px;
}

.mar_b100 {
    margin-bottom:;
}

.bggray {
    background: #fafafa;
}

.p-r {
    position: relative;
}

.p-o {
    position: absolute;
}

.f-r {
    float: right;
}

.f-l {
    float: left;
}

.d-n {
    display: none;
}

.d-b {
    display: block;
}

.d-i {
    display: inline-block;
}

.t-r {
    text-align: right;
}

.t-l {
    text-align: left;
}

.t-c {
    text-align: center;
}

.clear {
    clear: both;
}

.o-h {
    overflow: hidden;
}

input::-webkit-input-placeholder {
    color: #fff;
}

input:-moz-placeholder {
    color: #fff;
}

input::-moz-placeholder {
    color: #fff;
}

input:-ms-input-placeholder {
    color: #fff;
}

/* 头部 */
header {
    height: 140px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 240;
}

    header.show {
        background: #fff;
        position: fixed;
    }

        header.show .top {
            color: #333;
        }

        header.show .top_nav a {
            color: #333;
            opacity: 1;
        }

        header.show .nav a {
            color: #333;
        }

        header.show .search_a {
            color: #333;
        }

        header.show .search_box {
            border: 1px solid #dedede;
            z-index: 300;
        }

        header.show .search_input {
            color: #7c7c7c;
        }

        header.show input::-webkit-input-placeholder {
            color: #7c7c7c;
        }

        header.show input:-moz-placeholder {
            color: #7c7c7c;
        }

        header.show input::-moz-placeholder {
            color: #7c7c7c;
        }

        header.show input:-ms-input-placeholder {
            color: #7c7c7c;
        }

.top {
    border-bottom: 1px solid rgba(224, 224, 224, 0.42);
    height: 55px;
    line-height: 55px;
    color: #fff;
}

.top_nav a {
    color: #fff;
    display: inline-block;
    margin-right: 20px;
}

.top_nav span {
    color: #e7bf45;
    font-weight: 600;
}

.nav {
    margin: 15px 0 0 60px;
}

    .nav a {
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        margin-right: 45px;
        padding-bottom: 25px;
    }

        .nav a.active {
            border-bottom: 2px solid #105cfb;
        }

        .nav a:hover {
            border-bottom: 2px solid #105cfb;
        }

.btn_box a {
    display: inline-block;
    height: 40px;
    line-height: 40px;
    padding: 0 40px;
    border-radius: 20px;
    margin-left: 20px;
}

.dl_after {
    margin-left: 20px;
}

    .dl_after span {
        color: #fff;
        padding-left: 5px;
    }

    .dl_after .tx {
        padding: 0;
        margin-left: 0;
    }

        .dl_after .tx img {
            display: inline-block;
            width: 30px;
            height: 30px;
            border-radius: 20px;
            vertical-align: middle;
        }

.btn_box a.close {
    color: #fff;
    padding: 0 0 0 5px;
    margin-left: 10px;
}

header.show .btn_box a.close,
header.show .dl_after span {
    color: #105cfb;
    padding-left: 5px;
}

.register_a {
    color: #105cfb;
    border: 1px solid #105cfb;
}

.login_a {
    color: #fff;
    background: #105cfb;
    border: 1px solid #105cfb;
}

.search_box {
    width: 180px;
    position: relative;
    margin-top: 5px;
    border: 1px solid #fff;
    height: 32px;
    border-radius: 16px;
    opacity: 0.8;
}

.search_input {
    height: 100%;
    border: none;
    background: none;
    text-indent: 15px;
    outline: none;
    color: #fff;
    width: 80%;
}

.search_a {
    color: #dedede;
    font-size: 20px;
    position: absolute;
    top: 7px;
    right: 15px;
}


/* 课程中心 */
.kc_box {
    padding: 80px 0;
    min-width: 1200px;
}

.kc_div ul {
    width: 960px;
    margin: 40px auto 0;
}

.kc_div li {
    margin-right: 30px;
}

.kc_div li {
    float: left;
    border-radius: 18px;
    border: 1px solid #666;
}

    .kc_div li.active {
        background: #105cfb;
        border: 1px solid #105cfb;
    }

        .kc_div li.active a {
            color: #fff;
        }

    .kc_div li a {
        display: inline-block;
        color: #333;
        padding: 0 40px;
        line-height: 36px;
    }

.kc_item a.kc_a {
    display: block;
    float: left;
    width: 384px;
    background: #fff;
    border-radius: 6px;
    border: 1px solid #edefef;
    padding-bottom: 30px;
    margin: 0 20px 20px 0;
}

    .kc_item a.kc_a:hover {
        z-index: 3;
        box-shadow: 0 0 40px rgba(0, 0, 0, .2)
    }

    .kc_item a.kc_a:nth-child(3n) {
        margin-right: 0;
    }

    .kc_item a.kc_a:first-child + a + a,
    .kc_item a.kc_a:first-child + a + a + a + a + a,
    .kc_item a.kc_a:first-child + a + a + a + a + a + a + a + a {
        margin-right: 0;
    }

.kc_item a .img {
    overflow: hidden;
    max-width: 100%;
    width: 384px;
    height: 213px;
    display: inline-block
}

    .kc_item a .img img {
        width: 384px;
        height: 213px;
        border-radius: 6px 6px 0 0;
        transition: all 0.3s;
    }

        .kc_item a .img img:hover {
            transform: scale(1.2);
        }

.kc_item a span.kc_ms,
.kc_item a span.kc_bt {
    display: block;
    padding: 5px 20px;
}

.kc_item a span em {
    color: #7c7c7c;
    display: inline-block;
}

.kc_item a span i {
    padding-right: 5px;
}

.kc_item a span.kc_ms {
    margin: 12px 0;
    overflow: hidden;
}

.kc_item a span.kc_bt {
    clear: both;
    color: #333;
}

.kc_content {
    clear: both;
    padding: 40px 0;
    height: 680px;
}

/* 版权 */
.footer {
    width: 100%;
    min-width: 1200px;
    background: #161e30;
    padding: 40px 0;
    clear: both;
}

.ewm_box {
    width: 25%;
    color: #fff;
}

    .ewm_box img {
        display: block;
        margin: 20px 0 10px 36px;
    }

    .ewm_box span {
        display: block;
    }

        .ewm_box span.tel {
            font-size: 30px;
            color: #fff;
        }

.other_div {
    width: 25%;
    color: #fff;
    margin: 20px 0 0;
}

    .other_div span {
        font-weight: 600;
        font-size: 16px;
        display: block;
        margin-bottom: 20px;
    }

    .other_div a {
        display: block;
        color: #9ea0a9;
        margin-bottom: 20px;
    }

        .other_div a:hover {
            color: #105cfb;
        }

.bq_text {
    color: #fff;
    opacity: 0.3;
    padding-top: 20px;
}

    .bq_text span {
        display: inline-block;
        float: right;
    }

        .bq_text span img {
            vertical-align: middle;
            padding-right: 5px;
        }

/* 暂无 */
.zanwu_img {
    background: #fff;
    padding: 100px 0;
    margin-bottom: 20px;
}

    .zanwu_img img {
        display: block;
        max-width: 350px;
        margin: 0 auto;
    }

    .zanwu_img p {
        text-align: center;
        font-size: 16px;
        color: #666;
        margin: 15px 0 0;
    }