.client-logos {
    width: 90%;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
   /* padding: 3rem 2rem;*/
    max-height: none;
    overflow: hidden;
    transition: max-height 0.5s ease;
    list-style-type: none; /* ● を消す */
    padding: 0;
    margin: 0 auto;
}

    .client-logos li {
        flex: 0 1 200px; /* 幅を自動調整（最大200pxまで） */
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .client-logos img {
        max-height: 200px;
        object-fit: contain;
       /* filter: grayscale(100%);*/
        transition: filter 0.3s ease;
    }

        .client-logos img:hover {
            /*filter: grayscale(0%);*/
        }

    /* 初期表示では最大6件までに制限 */
    .client-logos.limited {
        max-height: 280px;
        overflow: hidden;
    }

.client-list {
    list-style-type: none;
    padding-left: 0;
    margin-left: 0;
}

@media screen and (max-width: 768px) {
    .client-logos {
        width: 95%;
        gap: 2rem;
    }

        .client-logos li {
            flex: 0 1 calc(50% - 1rem); /* デフォルト: 2個並び */
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .client-logos img {
            max-width: 150px;
            object-fit: contain;
            /* filter: grayscale(100%);*/
            transition: filter 0.3s ease;
        }
}