/* YouTube用のサムネイル装飾 */
.c-card-item__thumbnail.--video {
    position: relative;
    padding: 0;
    margin-bottom: 0;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.c-card-item__thumbnail.--video img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}