.reference_btn {
    position: fixed;
    bottom: 30px;
    right: 20px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}
.reference_btn_item {
    width: 130px;
    height: 130px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    background: url('../../img/reference_btn_bg.svg') no-repeat center center / cover;
}
.reference_btn_item_text {
    font-size: 16px;
    font-weight: bold;
    line-height: 1.1;
    text-align: center;
}
.reference_btn_item_icon {
    width: fit-content;
    height: 30px;
    object-fit: contain;
}

@media screen and (max-width: 767px) {
    .reference_btn {
        bottom: 20px;
        right: 10px;
        flex-direction: row;
        gap: 5px;
    }
    .reference_btn_item {
        width: 80px;
        height: 80px;
        gap: 5px;
    }
    .reference_btn_item_text {
        font-size: 10px;
    }
    .reference_btn_item_icon {
        height: 15px;
    }
}