.about_wrapper {
    margin: 150px auto 50px;
}

.about_title {
    text-align: center;
    font-size: 80px;
    font-weight: bold;
}

.about_contents {
    max-width: 900px;
    margin: 0 auto;
}

.about_contents p {
    font-size: 25px;
    font-weight: bolder;
    margin: 0 auto;
    line-height: 2;
}

.about_logo {
    text-align: center;
    margin-top: 50px;
    margin-bottom: 40px;
}

.about_logo img {
    width: 400px;
}

.about_member {
    margin: 50px auto;
}

.member_list {
    display: flex;
    flex-direction: column;
    gap: 70px;
    margin-top: 50px;
}

.member_item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;

}

.member_item img {
    width: 23%;
}

.member_text {
    font-size: 20px;
    line-height: 2;
}

.member_explanation {
    width: 75%;
}

.member_position {
    font-weight: bold;
    font-size: 40px;
}

.member_name {
    font-size: 40px;
    margin-bottom: 15px;
    font-weight: bold;
}

.about_sns_area {
    display: flex;
    align-items: center;
    flex-direction: column;
    text-align: center;
    margin-top: 100px;
    margin-bottom: 100px;
}

.about_sns_area p {
    font-weight: bold;
    font-size: 35px;
}

.about_sns_area img {
    width: 50px;
}

.bg_gray {
    background-color: rgb(229, 229, 230);
    margin-top: 100px;
    padding: 150px 0;
}

/* タブレット用スタイル（768px-1023px） */
@media (min-width: 768px) and (max-width: 1023px) {
    .about_wrapper {
        margin: 120px auto 40px;
    }

    .about_title {
        font-size: 65px;
    }

    .about_contents {
        max-width: 800px;
        margin: 0 auto;
    }

    .about_contents p {
        font-size: 20px;
    }

    .about_logo {
        margin-top: 40px;
        margin-bottom: 35px;
    }

    .about_logo img {
        width: 35%;
    }

    .about_member {
        margin: 40px auto;
    }

    .member_list {
        gap: 50px;
        margin-top: 40px;
    }

    .member_item {
        gap: 35px;
    }

    .member_item img {
        width: 18%;
    }

    .member_explanation {
        width: 70%;
    }

    .member_position {
        font-size: 32px;
    }

    .member_name {
        font-size: 36px;
        margin-bottom: 12px;
    }

    .about_sns_area {
        margin-top: 80px;
        margin-bottom: 30px;
    }

    .bg_gray {
        margin-top: 80px;
        padding: 120px 0;
    }
}

@media (max-width: 767px) {
    .bg_gray {
        padding-top: 50px;
        padding-bottom: 50px;
        margin-top: 80px;
    }
    .about_wrapper {
        margin-top: 0;
    }

    .about_contents {
        width: 80%;
    }

    .about_title {
        font-size: 27px;
    }

    .about_contents p {
        font-size: 13px;
        width: 92.3%;
    }
    
    .about_logo {
        margin-top: 30px;
        margin-bottom: 30px;
    }

    .member_list {
        width: 92.3%;
        margin: 30px auto 0;
    }

    .member_item {
        gap: 15px;
    }

    .member_item img {
        width: 35%;
    }

    .member_position {
        font-size: 14px;
    }

    .member_name {
        font-size: 15px;
        margin-bottom: 10px;
    }

    .member_text {
        font-size: 12px;
    }
    .about_logo img {
        width: 35%;
    }

    .about_sns_area {
        margin: 0;
    }

    .about_sns_area p {
        font-size: 16px;
    }
}