/* main */ 
.main_content{
    margin-left: 5%;
    margin-right: 5%;
    padding: 20px 5%;
    background: rgb(0,0,30);
    color:rgb(170,170,170);
}

.section_block{
    margin-bottom: 50px;
}

.section_title, .introduction_title{
    border-left: solid 5px rgb(100, 120, 160);
    padding-left: 10px;
    /* background: rgb(50,50,50); */
    font-family: 'Yu Gothic';
}

.section_block > p, .section_block > div{
    padding-left: 5%;
    padding-right: 5%;
}

/* main member */
.member_block{
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-content: stretch;
}

.member_block > * {
    box-sizing: border-box;
    height: 200px;
    width: 50%;

    padding: 10px;
    color:rgb(50, 50, 50);
}


/* main member supervisor */
.supervisor_content{
    height: 100%;
    background: rgb(200, 200, 200);

    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.supervisor_image{
    overflow: hidden;
    background: black;
    cursor: pointer;
}

.supervisor_image img{
    height: 100%;
    max-height: 150px;
    overflow: hidden;
    transition-duration: 0.2s;
}

.supervisor_image:hover img{
    transform: scale(1.1);
    transition-duration: 0.5s;
    opacity: 0.6;
}

.supervisor_text > *{
    margin: 0 10px;
}

.supervisor_role{
    font-size: 1.2rem;
    font-weight: bold;
}

.supervisor_name_jp{
    font-size: 2rem;
    line-height: 1.6;
    font-family: 'Yu Gothic' sans-serif;
}

.supervisor_name_en{
    font-size: 0.8rem;
    line-height: 1.5;
    font-weight: bold;
}

/* main member image */
.member_image img{
    height: 100%;
    width: 100%;
    object-fit: cover;
    overflow: hidden;
}

/* main member student */
.student_content{
    height: 100%;
    background: rgb(200, 200, 200);
    padding: 0px;

    border-left: solid 25px rgb(100, 120, 160);

    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.student_content > *{
    margin: 0;
    padding: 0;
    width: 50%;
}

.student_name{
    text-align: center;
}

.student_name_jp{
    margin: 0;
    font-size: 1.8rem;
    line-height: 1;
    font-family: 'Yu Gothic', sans-serif;
}

.student_name_en, .student_role{
    margin: 0;
    font-size: 0.7rem;
    line-height: 1.8;
    font-weight: bold;
}

.student_character{
    padding: 0 10px;
    text-align: left;
    line-height: 1.6;
}

.student_character p{
    margin: 0;
}

.student_character_title_bullet{
    display: inline-block;
    width: 0;
    height: 0;
    border: 5px solid transparent;
    border-left-color: rgb(100, 120, 160);
}

.student_character_text{
    padding-left: 20px;
}


/* for smartphone */
@media screen and (max-width: 800px){
    .member_block{
        flex-direction: column;
    }
    
    .member_block > * {
        height: 180px;
        width: 100%;
    }
}

@media screen and (max-width: 480px){
    .main_content{
        margin: 5%;
        padding: 2%;
    }

    .section_title{
        font-size: 1.4rem;
    }

    .section_block > p, .section_block > div{
        padding-left: 2%;
        padding-right: 2%;
    }

    .member_block > * {
        height: 150px;
        width: 100%;
    }

    .student_content{
        border-left: solid 15px rgb(100, 120, 160);
    }

    .supervisor_name_jp{
        font-size: 1.4rem;
    }

    .student_name_jp{
        font-size: 1.4rem;
    }

    .student_role{
        font-size: 0.6rem;
    }

    .student_character{
        font-size: 0.8rem;
    }

}