section.join{
    padding-top: calc(90 * var(--rpx-50));
    padding-bottom: calc(70 * var(--rpx-50));
}

.join-ctn{
    position: relative;
    height: calc(480 * var(--rpx));

    display: flex;
    align-items: flex-start;

    padding: clamp(30px, calc(4.1667vw - 10px), 70px) clamp(30px, calc(13.5417vw - 100px), 160px);
}

.join-ctn .section-back{
    width: 100%;
    height: auto;
    min-height: 100%;
}

.join-ctn .left,
.join-ctn .right{
    position: relative;
    z-index: 210;

    width: calc((100% - (80 * var(--rpx))) / 2);
    flex: 0 0 auto;
    justify-content: space-between;
    align-items: flex-start;
    padding-left: calc(32 * var(--rpx));
}

.join-ctn .right::after{
    content: "";
    position: absolute;
    width: 2px;
    height: 100%;
    top: 0;
    left: 0;
    background: linear-gradient(to bottom, var(--theme-navy), var(--theme-grass));
}

.join .left-desc{
    width: calc(300 * var(--rpx));
    font-size: calc(24 * var(--rpx));
    line-height: calc(38em / 24);
}

section.application{
    padding-top: calc(80 * var(--rpx-50));
    padding-bottom: calc(70 * var(--rpx-50));
}

section.development{
    padding-top: calc(80 * var(--rpx-50));
    padding-bottom: calc(160 * var(--rpx-50));
}

.dev-swiper-ctn{
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    margin-top: calc(54 * var(--rpx-50));
}

.swiper-dev-left{
    width: clamp(420px, calc(33.3333vw + 100px), 740px);
    flex: 0 0 auto;
    margin-left: 0;
}
.swiper-dev-right{
    width: clamp(460px, calc(37.5vw + 100px), 820px);
    flex: 0 0 auto;
    margin-right: 0;
}

.swiper-dev-right .swiper-wrapper{
    align-items: flex-start;
}

.dev-swiper-ctn .swiper-slide{
    aspect-ratio: 16/9;
}

.swiper-dev-right .swiper-slide{
    width: clamp(210px, calc(18.75vw + 30px), 390px);
    overflow: hidden;
    cursor: pointer;
    margin-right: calc(40 * var(--rpx-50));
    height: auto;
}


.swiper-dev-right .swiper-slide:last-of-type(1),
.swiper-dev-right .swiper-slide:last-of-type(2),
.swiper-dev-right .swiper-slide:last-of-type(3){
    margin-right: 0;
}

.swiper-dev-right .swiper-slide .placeholder{
    visibility: hidden;
    pointer-events: none;
}

.swiper-dev-right img{
    transition: .3s;
}

.swiper-dev-right .swiper-slide:hover img{
    transform: scale(1.08);
}

.dev-swiper-ctn img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 960px) {
    .swiper-dev-left{
        width: clamp(400px, calc(9.5238vw + 328.5714px), 420px);
    }

    .swiper-dev-right{
        width: clamp(290px, calc(80.9524vw - 317.1429px), 460px);
    }
}

@media (max-width: 750px) {
    .join-ctn{
        padding: calc(40 * var(--rpx));
        flex-direction: column;
    }

    .join-ctn .left, .join-ctn .right{
        width: 100%;
    }

    .join .left-desc{
        width: 100%;
    }

    .join-ctn>*{
        width: 100%;
    }

    .join-ctn .right{
        margin-top: calc(30 * var(--rpx));
    }

    .dev-swiper-ctn{
        position: relative;
        padding-bottom: calc(160 * var(--rpx));
    }

    .swiper-dev-left{
        width: 100%;
    }

    .swiper-dev-right{
        position: absolute;
        width: 100%;
        padding-bottom: calc(160 * var(--rpx));
        top: 0;
    }

    .swiper-dev-right .swiper-wrapper{
        visibility: hidden;
    }

    .swiper-dev-right .swiper-slide{
        width: 100%;
    }
}