.buttonarea {
    text-align: center;
    margin-top: 100px;
}

.mv_image {
    width: 100%;
    position: relative;
}

.item {
    margin-top: 160px;
}

.borderarea {
    display: flex;
    justify-content: flex-end;
}

.border {
    width: 70%;
    border-bottom: solid 1px #DDC444;
    margin-bottom: 25px;
}

* {
    box-sizing: border-box;
}

.content_area {
    display: flex;
    column-gap: 30%;
}

.tab-container {
    display: flex;
    flex-direction: column;
    row-gap: 40px;
}

.tab-container {
    margin: 0 0 15px;
}

.tab {
    min-width: 80px;
    width: 100%;
    padding: 10px;
    cursor: pointer;
    font-size: clamp(16px, 3vw, 24px);
}

.tab:hover {
    opacity: 0.6;
    transition: 0.5s;
}

.tab.active {
    border-bottom: solid 1px #DDC444;
}

.content {
    display: none;
    /*必須*/
}

.content.show {
    display: block;
    /*必須*/
}

.item {
    margin-bottom: 120px;
}

.item_container {
    display: flex;
    flex-wrap: wrap;
    column-gap: 5%;
    row-gap: 50px;
}

.item_box {
    width: 47%;
}

.item_image_box {
    width: 100%;
    overflow: hidden;
}

.item_image {
    width: 100%;
    height: auto;
    transition: 0.5s;
}

.item_image:hover {
    transform: scale(1.05);
    transition: 0.5s;
}

.item_title {
    font-size: clamp(16px, 3vw, 20px);
    font-weight: 700;
    margin-bottom: 2px;
}

.item_text {
    margin-top: 20px;
}

.item_info {
    font-size: clamp(13px, 3vw, 14px);
    line-height: 180%;
    margin-bottom: 2px;
}


@media screen and (max-width: 570px) {

    .content_area {
        display: flex;
        flex-direction: column;
        column-gap: 30%;
    }

    .tab-container {
        flex-direction: row;
        column-gap: 10%;
        justify-content: flex-end;
    }

    .tab {
        min-width: 0;
        width: 50px;
        padding: 0px;
        padding-bottom: 2px;
        text-align: center;
    }


    .item_box {
        width: 100%;
    }

    .borderarea {
        display: none;
    }
}