h4 {
    margin-bottom: var(--space-2);
    line-height: 100%;
}

.about-section-img {
    height: 50vh;
    overflow: hidden;
}

.about-section-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-section {
    margin: var(--space-3) var(--space-1);
}

/* About-トップ */
#subpage-top {
    margin-bottom: 0;
}

#subpage-top-en {
    margin-bottom: 0;
}

.about-section-top {
    background-color: var(--main-color);
    padding: 64px 32px 128px;
    margin-bottom: 0;
}

.about-section-top-wrapper {
    color: var(--bg-color);
    background-color: var(--main-color);
}

.about-section-top-txt {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

/* PCトップ */
@media (min-width: 1073px) {
    .about-section {
        max-width: 1216px;
        margin: 144px auto 144px;
        padding: 0 32px;
    }

    .about-section-top {
        padding: 0 32px 144px;
        margin-bottom: 0;
    }
}

/* PCトップ */
@media (min-width: 740px) {
    .about-section-top-wrapper {
        max-width: 1152px;
        margin: 0 auto;
        /* スマホ時の左右余白 */
    }

    .about-section-top-txt {
        padding-left: clamp(0px,
                /* 最小値（広い時は揃える）   */
                40vw - ((100vw - 1152px) / 2),
                /* 画像左端の理想位置          */
                40%
                /* 最大値（画面が狭い時の上限）*/
            );
    }

    .about-section-img img {
        object-position: center 50%;
    }
}



/* SP器 */
.about-vessel-txt-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.about-vessel-img-wrapper {
    width: 50%;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    margin: 64px 0 32px auto;
}

.about-vessel-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-vessel-img-wrapper-s {
    aspect-ratio: 4 / 3;
    /* 横4 : 縦3 */
    width: 50%;
    overflow: hidden;
}

.about-vessel-img-wrapper-s img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* or contain（用途による） */
}


/* PC器 */
@media (min-width: 740px) {

    .about-vessel-wrapper {
        display: flex;
        gap: 64px;
        justify-content: space-between;
        align-items: flex-start;
    }

    .about-vessel-txt-wrapper {
        max-width: 630px;
        margin-bottom: var(--space-2);
    }

    .about-vessel-img-wrapper {
        max-width: 378px;
        margin: 36px 0 0;
    }


    .about-vessel-img-wrapper-s {
        width: 25%;
    }

}

.about-history-txt-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    justify-content: center;
}

.about-history-img-wrapper {
    aspect-ratio: 4 / 3;
    /* 横4 : 縦3 */
    width: 100%;
    overflow: hidden;
    margin-bottom: 32px;
}

.about-history-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* or contain（用途による） */
}

.about-history-content:not(:last-child) {
    margin-bottom: var(--space-2);
}


/* PC器 */
@media (min-width: 740px) {
    .about-history-content {
        display: flex;
        /* ←横並びの高さを揃える */
        gap: 64px;
        justify-content: space-between;
        align-items: center;
    }

    .about-history-content:not(:nth-child(3)) {
        flex-direction: row-reverse;
    }

    .about-history-img-wrapper {
        margin-bottom: 0px;
        width: 386px;
    }

    .about-history-txt-wrapper {
        width: 630px;
        /* ←テキストの最大幅 */
    }

    .about-history-content:not(:last-child) {
        margin-bottom: 72px;
    }

}

.about-thought-img {
    aspect-ratio: 3 / 4;
    /* 横4 : 縦3 */
    width: 100%;
    overflow: hidden;
    margin-bottom: 32px;
}

.about-thought-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.about-thought-txt {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

/* PC */
@media (min-width: 740px) {
    .about-thought-wrapper {
        display: flex;
        flex-direction: row-reverse;
        gap: var(--space-2);
        justify-content: space-between;
    }

    .about-thought-txt {
        width: 630px;
    }

    .about-thought-img {
        width: 378px;
        height: 100%;
    }
}