.product-block {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.product_b-thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    background-color: black;
}
.product_b-thumbnail img {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-block[data-theme='home'] img.product_b-thumbnail-second {opacity: 0;}
.product-block[data-theme='product'] img.product_b-thumbnail-first {opacity: 0;}

.product_b-title {
    padding-top: .3rem;
    padding-bottom: .5rem;
}
@media only screen and (min-width: 1024px) {
    .product_b-title {
        padding-top: .5rem;
        padding-bottom: .55rem;
    }
}

.product_b-title .t-sans {line-height: 100%;}

@media (hover: hover) {
    .product-block img {transition: 250ms ease;}
    .product-block[data-theme='home'] img.product_b-thumbnail-first {
        order: 1;
        z-index: 5;
    }
    .product-block[data-theme='home'] img.product_b-thumbnail-second {
        opacity: 1;
        order: 2;
    }

    .product-block[data-theme='home']:hover img.product_b-thumbnail-first {opacity: 0;}
    
    .product_b-title {transition: 250ms ease;}
    .product-block[data-theme='home']:hover .product_b-title {background-color: white;}
    .product-block[data-theme='product']:hover .product_b-title {background-color: var(--c-blue);}
}