a {
    text-decoration: none;
}

html {
    height: 100%;
}

body {
    margin: 0px;
    background: #4b5876;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei',
        'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans',
        'Droid Sans', 'Helvetica Neue', sans-serif;
}

.container {
    min-height: calc(100vh - 150px);
    position: relative;
}

.cover {
    max-width: 1400px;
    min-width: 600px;
    display: block;
    -webkit-user-select: none;
    margin: auto;
    cursor: zoom-in;
    background-color: hsl(0, 0%, 90%);
    transition: background-color 300ms;
}

.card-container {
    width: 1200px;
    position: absolute;
    left: 50%;
    top: 410px;
    transform: translateX(-50%);
}

.card {
    background: url(../img/ruijiaoyan-introduction/card@2x.png) center
        no-repeat;
    width: 382px;
    height: 300px;
    background-size: contain;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 63px 90px 73px 72px;
}

.card .content .title {
    height: 22px;
    font-size: 16px;
    font-weight: 600;
    color: #335d88;
    line-height: 22px;
    display: inline-flex;
    align-items: center;
}

.card .content .title::before {
    display: inline-block;
    content: '';
    width: 5px;
    height: 8px;
    background: #335d88;
    margin-right: 9px;
    line-height: 100%;
}

.card .content .text {
    font-size: 14px;
    font-weight: 400;
    color: #222222;
    line-height: 20px;
    margin-top: 10px;
}

.footer {
    width: 100%;
    background: #2b2e36;
    font-size: 12px;
}

.footer .main {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.up {
    display: flex;
    align-items: center;
    border-bottom: 1px solid #3c404b;
    padding: 24px 0;
}

.logo {
    width: 216px;
    height: 33px;
    background: url(../img/ruijiaoyan-introduction/logo@2x.png) center
        no-repeat;
    background-size: contain;
    margin-right: 20px;
}

.info {
    display: flex;
    flex-direction: column;
    border-left: 1px solid #5b606f;
    padding-left: 20px;
}

.info .top {
    display: inline-flex;
    margin: 3px 0;
}

.info .top a {
    color: #fff;
    line-height: 12px;
    height: 12px;
    padding-right: 16px;
}

.info .top a:not(:first-child) {
    padding-left: 16px;
    border-left: 1px solid #fff;
}

.info .bottom {
    display: inline-flex;
    margin: 7px 0 3px;
}

.info .bottom a {
    line-height: 12px;
    height: 12px;
    color: #aeb3c0;
}

.info .bottom a:not(:first-child) {
    margin-left: 20px;
}

.down {
    display: flex;
    margin: 24px 0;
    align-items: center;
    justify-content: center;
}

.down a {
    padding: 0 16px;
    line-height: 12px;
    height: 12px;
    color: #686d7b;
}

.down a:not(:first-child) {
    border-left: 1px solid #686d7b;
}