.sec:nth-child(2n) {
    background: #F9FAFF;
}


.sec1 .item-box {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}


.sec1 .item {
    width: 28%;
    text-align: center;
    margin: 30px 2% 20px 2%;
}

.sec1 .item img {
    width: 76px;
    display: inline-block;
}

.sec1 .item .title {
    font-size: 20px;
    line-height: 30px;
    color: #000;
    margin: 10px auto 0px auto;
}

.sec1 .item .desc {
    font-size: 14px;
    line-height: 22px;
    color: #7E899B;
    padding: 5px 15px;
}

.sec2 .wh1200 {
    text-align: center;
}

.sec2 .wh1200 img {
    width: 1082px;
}

.sec3 .sec-content {
    padding: 0;
}

.sec3 .item-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: solid 1px #E5E5E5;
    padding: 60px 0;
}

.sec3 .item-content:last-child {
    margin-top: 0;
}

.sec3 .item:last-child .item-content {
    border: none;
    padding-bottom: 0;
}

.sec3 .item-content .img {
    width: 600px;
    flex-shrink: 0;
}

.sec3 .item-content .text {
    width: 580px;
    padding-left: 12px;
}

.sec3 .item-content .text .title {
    font-weight: 500;
    font-size: 24px;
    color: #333;
    line-height: 33px;
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 42px;
}

.sec3 .item-content .text .title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background: #004BE1;
    position: absolute;
    bottom: 0;
    left: 0;
}

.sec3 .item-content .text .desc li {
    margin-bottom: 30px; 
}

.sec3 .item-content .text .desc li:last-child {
    margin-bottom: 0;
}

.sec3 .item-content .text .desc li .desc-title {
    font-size: 18px;
    font-weight: 500;
    color: #333333;
}

.sec3 .item-content .text .desc li .desc-content {
    margin-top: 6px;
    font-size: 16px;
    font-weight: normal;
    line-height: 24px;
    color: #666;
}

.sec3 .item-content .btn {
    display: block;
    width: 125px;
    height: 35px;
    border-radius: 6px;
    text-align: center;
    line-height: 35px;
    box-sizing: border-box;
    border: solid 1px #004BE1;
    margin-top: 50px;
    font-size: 14px;
    color: #004BE1;
}

.sec3 .item-content .btn:hover {
    color: #fff;
    background: linear-gradient(to right, #4591FF, #004BE1);
}


.sec4 .item {
    height: 128px;
    margin-top: 50px;
    padding-left: 40px;
    margin-right: 106px;
}

.sec4 .item:nth-child(-n+2) {
    margin-top: 0;
}

.sec4 .item:nth-child(2n) {
    margin-right: 0;
}

.sec4 .item .img {
    width: 76px;
    margin-right: 50px;
}

.sec4 .item .text {
    width: 365px;
}

.sec4 .item .title {
    font-size: 25px;
    line-height: 27px;
    color: #333;
    font-weight: bold;
}

.sec4 .item .desc {
    margin-top: 12px;
    font-size: 16px;
    color: #666;
    line-height: 24px;
}

.sec4 .item .desc span{
    margin-top: 12px;
    font-size: 16px;
    color: #2d6ffd;
    line-height: 24px;
    font-weight: bold;
}


.sec5 .case-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.sec5 .case {
    width: 180px;
    text-align: center;
    margin-top: 22px;
}

.sec5 .case img {
    
}

.sec5 .case:nth-child(-n+7) {
    margin-top: 0px;
}