.solution-layer {
    --layer-spacing: clamp(30px, calc(100 / 1920 * 100vw), 100px) 0 clamp(30px, calc(130 / 1920 * 100vw), 130px);
}

.collapse {
    border-bottom: 1px solid #B6B6B6;
}

.collapse .collapse-item {
    border-top: 1px solid #B6B6B6;
}

.collapse .collapse-item__header {
    padding: var(--spacing-40) 0;
    cursor: pointer;
}

.collapse .collapse-item__title {
    --font-size-24-clamp: clamp(16px, calc((24 / 1920) * 100vw), 24px);
    font-size: var(--font-size-24-clamp);
    line-height: 1.2;
    transition: color .3s linear;
}

.collapse .collapse-item:hover .collapse-item__title {
    color: var(--primary);
}

.collapse .collapse-item.active .collapse-item__title {
    color: var(--primary);
    font-weight: 600;
}

.collapse .collapse-item__main {
    height: 0px;
    overflow: hidden;
    transition: height .3s linear;
}

.collapse .collapse-item.active .collapse-item__main {
    overflow: visible;
}

.collapse .collapse-item__content {
    font-size: var(--font-size-20-clamp);
    display: flex;
    padding-bottom: var(--spacing-40);
}

.collapse .collapse-item__content--left,
.collapse .collapse-item__content--right {
    flex: 1 1 0;
}

.collapse .collapse-item__content--left .section-box {
    line-height: 1.4;
}

.collapse .collapse-item__content--left .section-box p+p {
    margin-top: clamp(10px, calc((16 / 1920) * 100vw), 14px);
}

.collapse .collapse-item__content--left .section-box p {
    display: flex;
}

.collapse .collapse-item__content--left .section-box p::before {
    content: '';
    width: 4px;
    height: 4px;
    background-color: #333;
    border-radius: 50%;
    margin-top: calc(clamp(5, calc((10 / 1920) * 100), 10) * 1.4px);
    margin-right: clamp(8px, calc(14 / 1920 * 100vw), 14px);
}

.collapse .collapse-item__content--right {
    min-height: clamp(96px, calc((310 / 1920) * 100vw), 310px);
}

.collapse .collapse-item__content--right .poster {
    width: 100%;
    overflow: hidden;
    transform: translateY(-40px);
}

.collapse .collapse-item__content--right .poster img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .3s linear;
}

.collapse .collapse-item__content--right .poster:hover img {
    transform: scale(1.3);
}

.application-layer {
    background: #EFEFEF url(../images/bg-5.jpg) no-repeat center top / 100% auto;
}

.application-layer .application-box {
    max-width: clamp(600px, calc((956 / 1920) * 100vw), 956px);
    gap: var(--spacing-40);
    margin: 0 auto clamp(20px, calc((96 / 1920) * 100vw), 96px);
}

.application-layer .application-item {
    background-color: #fff;
    transition: background .3s linear;
    cursor: pointer;
}
.application-layer .application-item.active,
.application-layer .application-item:hover {
    background-color: var(--primary-bg);
}

.application-layer .application-item .application-item__content {
    --lr: clamp(10px, calc((15 / 1920) * 100vw), 15px);
    font-size: var(--font-size-20-clamp);
    padding: var(--spacing-30);
    display: flex;
    align-items: center;
}

.application-layer .application-item__content .img {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.application-layer .application-item__content .img img {
    height: clamp(20px, calc((38 / 1920) * 100vw), 38px);
}

.application-layer .application-item__content .img .default {
    transition: opacity .3s linear;
}

.application-layer .application-item__content .img .hover {
    opacity: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity .3s linear;
}
.application-layer .application-item.active .img .default,
.application-layer .application-item:hover .img .default {
    opacity: 0;
}
.application-layer .application-item.active .img .hover,
.application-layer .application-item:hover .img .hover {
    opacity: 1;
}

.application-layer .application-item__content .name {
    margin-left: var(--spacing-30);
    transition: color .3s linear;
}
.application-layer .application-item.active .name,
.application-layer .application-item:hover .name {
    color: #fff;
    font-weight: 600;
}

.application-layer .smart-box {
    gap: clamp(12px, calc((24 / 1920) * 100vw), 24px);
}

.application-layer .smart-box .smart-item {
    position: relative;
}

.application-layer .smart-box .smart-item__content {
    width: 100%;
    position: absolute;
    bottom: 0;
    left: 0;
}

.application-layer .smart-item .poster {
    overflow: hidden;
}

/* .application-layer .smart-box .smart-item__content {
    background-color: rgba(255, 255, 255, .3);
} */

.application-layer .smart-box .smart-item__content .section-box {
    --lr: clamp(12px, calc((16 / 1920) * 100vw), 16px);
    padding: var(--lr) var(--spacing-40);
    position: relative;
    z-index: 1;
}

.application-layer .smart-box .smart-item__content .title {
    font-size: var(--font-size-20-clamp);
    font-weight: 600;
    text-align: center;
}

.application-layer .smart-box .smart-item__content::after {
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    bottom: 0;
    left: 0;
    backdrop-filter: blur(23px);
    background: rgba(255, 255, 255, 0.5);
}

.application-layer .smart-item .poster img {
    transition: transform .3s linear;
}

.application-layer .smart-item:hover .poster img {
    transform: scale(1.2);
}

.smart-section {
    position: relative;
}

.smart-section .swiper-button {
    --w: clamp(30px, calc((80 / 1920) * 100vw), 80px);
    --swiper-navigation-sides-offset: calc(clamp(20px, calc((100 / 1920) * 100vw), 120px) * -1);
    width: var(--w);
    height: var(--w);
    background-color: rgba(208, 27, 39, 1);;
}

.smart-section .swiper-button::after {
    font-size: var(--font-size-18-clamp);
    color: #fff;
    /* color: var(--primary); */
}

@media screen and (max-width: 668px) {
    .collapse .collapse-item.active .collapse-item__main {
        overflow: hidden;
    }

    .collapse .collapse-item__content {
        flex-wrap: wrap;
    }

    .collapse .collapse-item__content--left,
    .collapse .collapse-item__content--right {
        flex: 0 0 100%;
    }

    .collapse .collapse-item__content--right {
        margin-top: 12px;
    }

    .collapse .collapse-item__content--right .poster {
        transform: translateY(0);
    }

    .application-layer .application-box {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 500px) {
    .application-layer .application-box {
        grid-template-columns: repeat(1, 1fr);
    }

    .application-layer .smart-box {
        grid-template-columns: repeat(1, 1fr);
    }
}