.head {
    height: 5.6rem;
    background-repeat: no-repeat;
    background-size: cover;
}

.head_d1 {
    width: 1200px;
    margin: 0 auto;
    padding-top: 1.35rem;
    padding-bottom: 1.3rem;
}

.head_p1 {
    font-size: 0.48rem;
    color: white;
    line-height: 1;
    margin-bottom: 0.17rem;
    letter-spacing: 1px;
    font-weight: 500;
}

.head_p2 {
    font-size: 0.22rem;
    color: white;
    line-height: 1;
    margin-bottom: 0.36rem;
    letter-spacing: 4px;
    text-indent: 4px;
    font-family: arial;
}

.head_p3 {
    font-size: 0.16rem;
    color: white;
    line-height: 0.3rem;
}

.head_d2 {
    display: flex;
    align-items: center;
    margin-top: 0.55rem;
    cursor: pointer;
}

.head_d2 img {
    width: 0.7rem;
    height: 0.7rem;
    object-fit: contain;
    display: block;
    margin-right: 0.16rem;
}

.head_d2 p {
    font-size: 0.24rem;
    color: white;
    border-bottom: 1px solid white;
    letter-spacing: 1px;
}

/*  */
.chall_bg {
    background-color: #f0f3f7;
    width: 100%;
    overflow: hidden;
}

.chall {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    padding-top: 1rem;
    padding-bottom: 1.05rem;
}

.chall_l {
    min-width: 4.1rem;
    width: 4.1rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.chall_p1 {
    font-size: 0.6rem;
    color: #619fd0;
    position: relative;
    line-height: 1;
    padding-bottom: 0.3rem;
    margin-bottom: 0.3rem;
}

.chall_p1::after {
    content: "";
    position: absolute;
    left: 4px;
    bottom: 0;
    width: 0.42rem;
    height: 5px;
    background-color: #619fd0;
}

.chall_r {
    flex-grow: 1;
    padding-left: 1.4rem;
    padding-top: 0.3rem;
}

.chall_list {
    height: 4.42rem;
    overflow-y: scroll;
}

.chall_item {
    margin-bottom: 0.61rem;
    width: 6.1rem;
}

.chall_item:last-of-type {
    margin-bottom: 0;
}

.chall_p2 {
    display: flex;
    align-items: center;
    font-size: 0.2rem;
    color: #333947;
    margin-bottom: 0.12rem;
}

.chall_p2 img {
    width: 0.28rem;
    min-width: 0.28rem;
    height: 0.24rem;
    object-fit: contain;
    margin-right: 0.2rem;
}

.chall_p3 {
    font-size: 0.14rem;
    line-height: 0.24rem;
    color: #333947;
    padding-left: 0.5rem;
}

/* 解决方案 */

.solution {
    padding-top: 1rem;
    padding-bottom: 1.27rem;
}

.solution_img {
    width: 1200px;
    margin: 0 auto;
    position: relative;
}

.solution_img img {
    display: block;
    object-fit: contain;
    margin: 0 auto;
}

.solution_list {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    font-size: 18px;
    color: #1b2a75;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.solution_list p {
    width: 25%;
    margin-right: 9px;
    margin-bottom: 82px;
    text-align: center;
    padding-top: 96px;
    line-height: 1;
}

.solution_list p:nth-of-type(3n) {
    margin-right: 0;
}

.solution_list p:nth-of-type(2n) {
    margin-right: 0;
}

/*  */

.advan_bg {
    padding: 1.3rem 0;
    background-color: #f0f3f7;
    overflow: hidden;
    width: 100%;
}

.advan {
    width: 1200px;
    margin: 0 auto;
    display: flex;
}

.advan_list {
    display: flex;
    flex-wrap: wrap;
    width: 7.87rem;
    min-width: 7.87rem;
}

.advan_item {
    width: 2.5rem;
    height: 2rem;
    background-color: #f0f3f7;
    box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    margin-right: 0.18rem;
    margin-bottom: 0.18rem;
    position: relative;
}

.advan_item:nth-of-type(n+4) {
    margin-bottom: 0;
}

.advan_img {
    width: 100%;
    height: 1.4rem;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 0.33rem;
}

.advan_img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.advan_d1,
.advan_d2 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.advan_d1 {
    background-color: #f0f3f7;
}

.advan_d2 {
    display: none;
    padding: 0.3rem 0.22rem 0.2rem;
    background-color: white;

    flex-direction: column;
    justify-content: center;
    text-align: center;
}

.advan_p2 {
    font-size: 0.18rem;
    color: #619fd0;
    margin-bottom: 0.15rem;
}

.advan_p3 {
    font-size: 0.13rem;
    color: #464d61;
    line-height: 0.24rem;
}

.advan_p1 {
    height: 0.6rem;
    font-size: 0.18rem;
    color: #464d61;
    text-align: center;
}

.advan_r {
    flex-grow: 1;
    text-align: right;
    transform: translateY(-0.1rem);
}

.advan_p4 {
    font-size: 0.6rem;
    color: #619fd0;
    line-height: 1;
    padding-bottom: 0.3rem;
    position: relative;
    margin-bottom: 0.4rem;
    letter-spacing: 2px;
}

.advan_p4::after {
    content: "";
    width: 0.42rem;
    height: 0.05rem;
    background-color: #619fd0;
    position: absolute;
    right: 5px;
    bottom: 0;
}

.advan_r_img img {
    margin-left: auto;
}

/*  */

.track_bg {
    width: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    overflow: hidden;
    max-height: 6.3rem;
}

.track {
    width: 1200px;
    margin: 0 auto;
    padding: 1.4rem 0.65rem 1.4rem 1.4rem;
    display: flex;
}

.track_l {
    width: 5.17rem;
    min-width: 5.17rem;
    font-size: 0.6rem;
    color: white;
    line-height: 0.72rem;
}

.track_l p {
    position: relative;
    padding-bottom: 0.2rem;
    letter-spacing: 2px;
}


.track_l p::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0.42rem;
    height: 0.05rem;
    background-color: white;
}

.track_r p {
    font-size: 0.18rem;
    color: white;
    margin-bottom: 0.15rem;
    font-family: Arial, "Source Han Sans CN";
    letter-spacing: 1px;
    line-height: 1.4;
}

.track_r span {
    font-size: 0.32rem;
    color: white;
}

/*  */

.money_bg {
    background-color: #f0f3f7;
    width: 100%;
    overflow: hidden;
}

.money {
    display: flex;
    width: 1200px;
    margin: 0 auto;
    padding: 0.86rem 0;
}

.money_img {
    margin-right: 2.2rem;
}

.money_r {
    padding-top: 0.56rem;
}

.money_p1 {
    font-size: 0.4rem;
    color: #333947;
    line-height: 1;
    margin-bottom: 0.34rem;
    font-family: Arial, "Source Han Sans CN";
}

.money_p2 {
    font-size: 0.14rem;
    color: #464d61;
    line-height: 1.7;
}

.money_p3 {
    background-color: #619fd0;
    border-radius: 3px;
    width: 1.56rem;
    height: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: white;
    margin-top: 40px;
    cursor: pointer;
}

.money_p3 img {
    margin-right: 10px;
    height: 18px;
    object-fit: contain;
}

@media screen and (max-width: 1400px) {
    .head {
        background-position-x: -1.4rem;
    }
}

@media screen and (min-width: 1200px) {
    .advan_item:nth-of-type(3n) {
        margin-right: 0;
    }

    .chall_list::-webkit-scrollbar {
        width: 8px;
        background-color: #f5f5f5;
    }

    .chall_list::-webkit-scrollbar-thumb {
        background-color: #caced4;
        border-radius: 30px;
    }
}


@media screen and (max-width: 1920px) {}

@media screen and (max-width: 800px) {

    .track_l,
    .money_img,
    .solution_img {
        display: none;
    }

    .head_d1,
    .chall_l,
    .chall_r,
    .advan,
    .advan_p1,
    .money,
    .solution_img {
        width: 90%;
        margin: 0 auto;
    }

    .head_p3,
    .chall,
    .chall_img1 img,
    .chall_item,
    .advan_list,
    .track,
    .money_img,
    .money_img img,
    .money_p3,
    .solution_img img {
        width: 100%;
        min-width: 100%;
    }

    .chall,
    .money {
        display: block;
    }

    .chall_r {
        padding-left: 0;
    }

    .chall_img1 {
        width: 70%;
        margin: 0 auto;
    }

    .chall {
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
    }

    .advan_item {
        width: 47%;
        margin-right: 6%;
    }

    .advan_item:nth-of-type(2n) {
        margin-right: 0;
    }

    .track {
        padding: 0.5rem;
    }

    .money_img {
        margin-right: 0;
    }

    .money_p2 {
        font-size: 0.22rem;
    }

    .chall_p3 {
        font-size: 0.2rem;
    }

    .chall_p2 {
        font-size: 0.26rem;
    }

    .head_p3 {
        font-size: 0.2rem;
    }

    .chall_list {
        height: 7rem;
        margin: 0 auto;
    }

    .advan {
        flex-direction: column-reverse;
    }

    .advan_r {
        width: 100%;
        margin-bottom: 0.3rem;
        text-align: left;
    }

    .advan_p4::after {
        left: 0;
    }

    .advan_r_img {
        width: 70%;
        margin: 0 auto;
    }

    .advan_r_img img {
        width: 100%;
        object-fit: contain;
    }

    .advan_d2{
        display: flex;
        opacity: 1;
    }
}