.back {
    position: fixed;
    right: 0;
    bottom: 5%;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    background-color: #fff;
    box-shadow: 0px 0px 10px #ccc;
    z-index: 99999;
}
.back img {
    width: 40px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
}
.business-center > div:nth-child(2n) {
    background: #f3f5f7;
}

.b-index1-div {
    width: 100%;
    height: 330px;
    display: flex;
    justify-content: space-between;
}

.b-index1-div > div {
    width: calc((56.67% - 60px) / 2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.b-index1-div > div:nth-child(2) {
    width: 43.33%;
    flex-direction: column-reverse;
}

.b-index1-div > div div {
    height: 100%;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    transition: .4s;
    position: relative;
    z-index: 1;
}

.b-index1-div > div p {
    height: 55px;
    background: #f3f5f7;
    color: #111111;
    font-size: 16px;
    /* line-height: 55px; */
    text-align: center;
    position: relative;
    z-index: 2;
    transition: .4s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.b-index1-div > div.active p {
    background: #137fcf;
    color: #fff;
}

.b-index1-div > div:hover div {
    transform: scale(1.1, 1.1);
}

.b-index2-div {
    display: flex;
    justify-content: space-between;
}

.b2-item {
    width: calc((100% - 46px) / 3);
    height: 195px;
    display: flex;
}

.b2-item div:nth-child(1) {
    width: 46.3%;
    background: #137fcf;
    text-align: center;
    position: relative;
    transition: .4s;
}

.b2-item div:nth-child(1):after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    background: linear-gradient(
            to bottom right,
            rgba(0, 0, 0, 0) 0%,
            rgba(0, 0, 0, 0) calc(50% - 1.5px),
            rgba(255, 255, 255, 1) 50%,
            rgba(0, 0, 0, 0) calc(50% + 1.5px),
            rgba(0, 0, 0, 0) 100%
    );
    z-index: 2;
}

.b2-item div:nth-child(2) {
    width: 53.7%;
    background: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.b2-item div i {
    color: #fff;
    font-size: 66px;
    line-height: 1;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50%;
    height: 50%;
    background: #137fcf;
    z-index: 3;
    transition: .4s;
}

.b2-item.active div i, .b2-item.active div:nth-child(1), .b2-item.active div:nth-child(1):before {
    background: #acce22;
}

.b2-item div:nth-child(1):before {
    content: '';
    width: 40%;
    padding-top: 40%;
    position: absolute;
    top: 50%;
    right: -8%;
    transform: translateY(-50%);
    border-radius: 50%;
    background: #137fcf;
    z-index: 1;
    transition: .4s;
}

.b2-item div p:nth-child(1) {
    font-size: 24px;
    line-height: 1;
    color: #333333;
    margin-bottom: 18px;
    text-align: center;
    width: 100%;
}

.b2-item div p:nth-child(2) {
    font-size: 20px;
    line-height: 1;
    color: #acce22;
    text-transform: uppercase;
}

.b-index3-div {
    display: flex;

}

.b3-item {
    width: calc((100% + 48px) / 5);
    padding-top: calc((100% + 24px) / 5);
    position: relative;
    border-radius: 50%;
    background: #e7f2fa;
    font-size: 20px;
    line-height: 1;
    color: #333333;
    overflow: hidden;
}

.b3-item:hover i {
    transform: rotateY(180deg);
}

.b3-item:hover p {
    color: #acce22;
}

.b3-item p {
    transition: .4s;
}

.b3-item:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: #137fcf;
    z-index: 2;
}

.b-index3-div .b3-item:nth-child(2n):after {
    top: auto;
    bottom: 0;
}

.b-index3-div .b3-item:nth-child(2n) {

    margin: 0 -6px;
}

.b3-item div {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% - 12px);
    height: calc(100% - 12px);
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 3;
}

.b3-item i {
    font-size: 70px;
    line-height: 1;
    color: #137fcf;
    margin-bottom: 15px;
    transition: .4s;
}


.swiper-container4 .swiper-slide {
    height: 160px;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
}

.swiper-container4 .swiper-slide div {
    background: #fff;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: .4s;
}

.swiper-container4 .swiper-slide:hover div {
    -moz-box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.3);
    -webkit-box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.3);
    box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.3);
}

.swiper-container4 .swiper-slide img {
    max-height: 85%;
    max-width: 85%;
    display: block;
}

.b-index5-div {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.b-index5-div .b5-item:nth-child(3) ~ div {
    margin-top: 120px;
}

.b5-item {
    width: calc((100% - 60px) / 3);
    position: relative;
}

.b5-item img {
    width: 100%;
    transition: .4s;
}

.b5-item div {
    position: relative;
    overflow: hidden;
    margin-bottom: 34px;
}

.b5-item p {
    font-size: 22px;
    line-height: 1;
    color: #333333;
    text-align: center;
}

.b5-item:hover img {
    transform: scale(1.1, 1.1);
}

.b5-item div:after {
    content: '01';
    position: absolute;
    top: 0;
    left: 0;
    width: 22%;
    height: 100%;
    background: #137fcf;
    transition: .4s;
    font-size: 42px;
    color: #ffffff;
    font-family: "di";
    display: flex;
    justify-content: center;
    align-items: center;
}

.b-index5-div .b5-item:nth-child(3) ~ div div:after {
    left: auto;
    right: 0;
}

.b-index5-div .b5-item.active div:after {
    background: #acce22;
}

.b-index6-div {
    display: flex;
    align-items: flex-end;
}

.b-index6-div img {
    width: 100%;
}

.b-index6-div > div:nth-child(2) {
    display: flex;
    align-items: center;
    margin-bottom: 150px;
}

.b-index6-div i {
    font-size: 58px;
    line-height: 1;
    color: #137fcf;
    margin-right: 30px;
}

.b-index6-div > div:nth-child(2) p:nth-child(1) {
    font-size: 24px;
    line-height: 1;
    margin-bottom: 20px;
    color: #333333;
}

.b-index6-div > div:nth-child(2) p:nth-child(2) {
    color: #137fcf;
    font-size: 36px;
    font-weight: bold;
    line-height: 1;
}


@media (max-width: 1440px) {
    .b-index5-div .b5-item:nth-child(3) ~ div {
        margin-top: 60px;
    }
}

@media (max-width: 1260px) {
    .b-index1-div {
        height: 300px;
    }

    .b2-item {
        height: 150px;
    }

    .b2-item div i {
        font-size: 50px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .b2-item div p:nth-child(1) {
        font-size: 20px;
        margin-bottom: 15px;
    }

    .b2-item div p:nth-child(2) {
        font-size: 16px;
    }

    .b3-item i {
        font-size: 60px;
    }

    .b3-item {
        font-size: 16px;
    }

    .b5-item p {
        font-size: 18px;
    }

    .b5-item div:after {
        font-size: 36px;
    }

    .b5-item div {
        margin-bottom: 25px;
    }

    .b-index6-div div:nth-child(1) {
        width: 65%;
    }
}

@media (max-width: 992px) {
    .b-index1-div {
        height: 250px;
    }

    .b-index1-div > div {
        width: calc((56.67% - 30px) / 2);
    }

    .b-index1-div > div p {
        font-size: 14px;
    }

    .b3-item i {
        font-size: 50px;
    }

    .b5-item {
        width: calc((100% - 30px) / 3);
    }

    .b-index6-div > div:nth-child(2) p:nth-child(2) {
        font-size: 24px;
    }

    .b-index6-div i {
        font-size: 45px;
        margin-right: 20px;
    }

    .b-index6-div > div:nth-child(2) p:nth-child(1) {
        font-size: 20px;
        margin-bottom: 10px;
    }
}

@media (max-width: 767px) {
    .service .title p {
        margin-bottom: 15px;
    }

    .b-index1-div {
        flex-wrap: wrap;
        height: auto;
    }

    .b-index1-div > div {
        width: 100%;
        height: 250px;
        flex-direction: column-reverse;
    }

    .b-index1-div > div:nth-child(2) {
        width: 100%;
    }

    .b-index1-div > div:nth-child(1) ~ div {
        margin-top: 15px;
    }

    .b-index2-div {
        flex-wrap: wrap;
    }

    .b-index2-div .b2-item:nth-child(1) ~ div {
        margin-top: 15px;
    }

    .b2-item {
        height: 100px;
        width: 100%;
    }

    .b-index3-div {
        flex-wrap: wrap;
        justify-content: center;
    }

    .b3-item {
        width: 100px;
        height: 100px;
        font-size: 14px;
    }

    .b3-item i {
        font-size: 36px;
        margin-bottom: 5px;
    }

    .b-index3-div .b3-item:last-child:after {
        top: auto;
        bottom: 0;
    }

    .b3-item div {
        width: calc(100% - 6px);
        height: calc(100% - 6px);
    }

    .b-index3-div .b3-item:nth-child(2) {
        margin: 0 -3px;
    }

    .b-index3-div .b3-item:nth-child(3) {
        margin: 0;
    }

    .b-index3-div .b3-item:nth-child(4) {
        margin-right: -1.5px;
    }

    .b-index3-div .b3-item:nth-child(5) {
        margin-left: -1.5px;
    }

    .swiper-container4 .swiper-slide {
        height: 120px;
    }

    .swiper-container4 .swiper-slide img {
        max-width: 60%;
        max-height: 60%;
    }

    .b5-item {
        width: calc((100% - 15px) / 2);
    }

    .b-index5-div .b5-item:nth-child(2) ~ div {
        margin-top: 15px;
    }

    .b-index5-div .b5-item:nth-child(3) div:after {
        right: 0;
        left: auto;
    }
    .b5-item div:after{
        font-size: 24px;
    }
    .b5-item div{
        margin-bottom: 15px;
    }
    .b5-item p{
        font-size: 14px;
    }
    .b-index5-div .b5-item:nth-child(4) ~ div div:after {
        right: auto;
        left: 0;
    }
    .b-index6-div{
        flex-wrap: wrap;
    }
    .b-index6-div div:nth-child(1){
        width: 100%;
    }
    .b-index6-div > div:nth-child(2){
        margin-bottom: 0;
        margin-top: 25px;
    }
    .b2-item div p:nth-child(1){
        font-size: 18px;
    }
    .b2-item div p:nth-child(2){
        font-size: 14px;
    }
    .b2-item div:nth-child(1){
        width: 35%;
    }
    .b2-item div:nth-child(2){
        width: 65%;
    }
}

@media (max-width: 414px) {

}