/* about */
.oac-about {
    background: var(--color-1);
    padding: var(--section-padding) 0 7rem;
    font-weight: bold;
    margin-bottom: var(--section-padding);
}

.oac-about-logo {
    width: 23rem;
    margin-bottom: var(--margin-middle);
}

.oac-about-title {
    font-size: 3rem;
    margin: 0 0 var(--margin-large);
    text-align: center;
}

.oac-plan-list-item-flex {
    display: flex;

}

/* plan */
.oac-plan-list-item {
    border: var(--border-width) solid var(--color-font);
    border-radius: var(--border-radius);
    padding: var(--margin-middle);
    position: relative;
}

.oac-plan-list-item-flex {
    display: flex;
}

.oac-plan-list-item-flex-item:first-child {
    width: 10rem;
    margin: 0 var(--margin-middle) 0 0;
}

.oac-plan-list-item-flex-item:last-child {
    width: calc(100% - 10rem + (-1 * var(--margin-middle)));
}

.oac-plan-list-item-flex-item-name {
    text-align: center;
    font-family: var(--font-family-en);
    line-height: 1;
}

.oac-plan-list-item-flex-item-name-main,
.oac-plan-list-item-flex-item-name-sub {
    display: block;
}

.oac-plan-list-item-flex-item-name-main {
    font-size: 4.5rem;
    color: var(--color-1);
}

.oac-plan-list-item-flex-item-name-sub {
    font-size: 2rem;
}

.oac-plan-list-item-price {
    display: flex;
    justify-content: center;
    font-weight: bold;
    align-items: flex-end;
    line-height: 1;
}

.oac-plan-list-item-price-sub {
    /* font-size: 1.8rem; */
}

.oac-plan-list-item-price-main {
    font-family: var(--font-family-en);
    font-size: 4rem;
    margin: 0 0.5rem;
}

.oac-plan-image {
    width: 100%;
    max-width: 240px;
    display: block;
}

.oac-plan-price {
    font-weight: bold;
    font-size: 3rem;
    line-height: 1.5;
}

@media screen and (min-width: 768px) {

    /* about */
    .oac-about {
        padding: 7.7rem 0 10.5rem;
    }

    .oac-about-logo {
        width: 28rem;
    }

    .oac-about-title {
        font-size: 3.8rem;
    }

    .oac-about-text {
        max-width: 75rem;
        text-align: center;
        margin-left: auto;
        margin-right: auto;
    }

    /* plan */
    .oac-plan-list-item {
        border: var(--border-width) solid var(--color-font);
        border-radius: var(--border-radius);
        padding: var(--margin-middle);
        position: relative;
    }

    .oac-plan-list-item-flex {
        display: block;
    }

    .oac-plan-list-item-flex:first-child {
        margin: 0 0 var(--margin-very-small);
    }

    .oac-plan-list-item-flex-item {
        position: relative;
    }

    .oac-plan-list-item-flex-item:first-child {
        width: 100%;
        margin: 0;
    }

    .oac-plan-list-item-flex-item:last-child {
        width: 100%;
    }

    .oac-plan-list-item-flex-item-name-main {
        font-size: 4.5rem;
        color: var(--color-1);
    }

    .oac-plan-list-item-flex-item-name-sub {
        font-size: 2rem;
    }

    .oac-plan-list-item-price {
        color: #fff;
        position: absolute;
        width: 100%;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .oac-plan-list-item-image {
        margin: 0 0 var(--margin-middle);
    }
}