.kh-area {
    padding: 110px 0px 20px;
    background-color: #f5f5f5;
}

.kh-title {
    text-align: center;
    font-size: 42px;
    font-weight: bold;
    color: #333;
    position: relative;
    padding-bottom: 20px;
}

.kh-title:before {
    width: 60px;
    height: 4px;
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0px;
    background: #006ab7;
}

.kh-content {
    width: 81.25%;
    margin: 50px auto;
}

.kh-1 {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.kh-1left {
    width: 46%;
}

.kh-1tab {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.kh-1tab>div {
    height: 40px;
    margin-right: 10px;
    margin-bottom: 10px;
    padding: 0 10px;
    line-height: 40px;
    font-size: 16px;
    color: #333;
    background-color: #fff;
    cursor: pointer;
}

.kh-1tab>div.on {
    background-color: #006ab7;
    color: #fff;
}

.kh-1col>div {
    padding: 40px 20px 60px;
    background-color: #fff;
}

.kh-1col .t1 {
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: bold;
}

.kh-1col .t2 {
    color: #333;
    font-size: 16px;
    line-height: 30px;
}


.kh-1right {
    width: 52%;
    padding-top: 40px;
    text-align: center;
}

.kh-1right img {
    max-width: 100%;
}


.kh-2 {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.kh-2left {
    width: 49%;
}


.kh-2right {
    width: 49%;
    padding: 20px;
    background-color: #fff;
    box-sizing: border-box;
}

.kh-2tab {
    display: flex;
    flex-wrap: wrap;
}


.kh-2tab>div {
    height: 40px;
    margin-right: 10px;
    padding: 0 10px;
    line-height: 40px;
    font-size: 16px;
    color: #333;
    background-color: #fff;
    cursor: pointer;
}


.kh-2tab>div.on {
    background-color: #006ab7;
    color: #fff;
}


.kh-2col {
    margin-top: 20px;
}


.kh-2col>div {
    font-size: 16px;
    line-height: 30px;
}

.kh-2col img {
    max-width: 86%;
}


.kh-2right .r1 {
    font-size: 20px;
    font-weight: bold;
}

.kh-2right .r2 {
    margin-top: 20px;
    font-size: 16px;
    line-height: 30px;
}

.kh-2right .r2 p {
    text-indent: 2em;
}


.kh-2right .r3 {
    margin-top: 20px;
    font-size: 20px;
    font-weight: bold;
}


.kh-2right .r4 {
    margin-top: 20px;
}

.kh-2right .r4-1 {
    font-size: 18px;
    font-weight: bold;
}

.kh-2right .r4-2 {
    font-size: 16px;
    line-height: 30px;
}


.kh-2right .r4-2 strong {
    font-weight: normal;
}

.kh-three {
    margin-bottom: 40px;
    padding: 0 20px;
}

.kh-three p {
    line-height: 2em;
    font-size: 16px;
    color: #666;
    text-align: center;
}

.kh-four {
    display: flex;
    flex-wrap: wrap;
}

.kh-four .four-item {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 25%;
    margin-bottom: 20px;
}

.kh-four .four-item img {
    max-width: 100%;
    max-height: 160px;
}

@media (max-width:991.98px) {
    .kh-title {
        font-size: 24px;
    }

    .kh-content {
        width: 90%;
    }

    .kh-1left {
        width: 100%;
    }


    .kh-1right {
        width: 100%;
    }


    .kh-2left {
        width: 100%;
    }

    .kh-2right {
        margin-top: 20px;
        width: 100%;
    }

    .kh-four .four-item {
        width: 100%;
    }
}