/*===========研究内容３カラム画像=====================================*/
.col_3 {
  overflow: hidden;
  margin-top: 10px;
  margin-bottom: 20px;
  margin-left: 25px;
}

.col_3 ul {
  overflow: hidden;
  margin: 0;
}
.col_3 li {
  list-style: none;
  float: left;
  width: 31%;
  margin:13px 10px;
}
.col_3 li:nth-child(3n+1) {
	clear:both;
}

.col_3 li p{
padding-left: 15px;
font-size: 14px;
}

/*画面幅1080px以下の設定
------------------------------------------------------------*/
@media screen and (max-width:1510px){

/*================================================*/

.col_3 li{
    list-style: none;
    width: 32%;
    margin: 0 5px 0 0;

}
}

/*画面幅480px以下の設定
------------------------------------------------------------*/
@media screen and (max-width:560px){

/*================================================*/
.col_3 {
  overflow: hidden;
  margin-left: 0px;
}

.col_3 li{
    list-style: none;
    width: 100%;
    margin-bottom: 10px;

}
}


/*===========下記は研究紹介部分=====================================*/

.accordion-004 {
    max-width: 100%;
    margin-bottom: 7px;
    border: 1px solid #d0d0d0;
    border-radius: 0px;
}

.accordion-004 summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    padding: 1em 2em;
    color: #333333;
    font-weight: 500;
    cursor: pointer;
    background-color: #f5f5f5;
}

.accordion-004 summary::-webkit-details-marker {
    display: none;
}

.accordion-004 summary::after {
    transform: translateY(-25%) rotate(45deg);
    width: 7px;
    height: 7px;
    margin-left: 10px;
    border-bottom: 3px solid #333333b3;
    border-right: 3px solid #333333b3;
    content: '';
    transition: transform .3s;
}

.accordion-004[open] summary::after {
    transform: rotate(225deg);
}

.accordion-004 p {
    transform: translateY(-10px);
    opacity: 0;
    margin: 0;
    padding: .3em 2em 1.5em;
    color: #333333;
    transition: transform .5s, opacity .5s;
}

.accordion-004[open] p {
    transform: none;
    opacity: 1;
}


/*研究内容バナー
---------------------------------------------------------------------------*/
.button-k {
    display: inline-block;
    width: 100%;
    padding: 3px 20px;
    border-radius: 0px;
    font-size: 18px;
    color: #fff;
    text-decoration: none;
    margin-top: 10px;
    margin-bottom: 10px;
}

@media screen and (max-width: 780px) {

.button-k {
    width: 95%;
    font-size: 15px;
}
}


.button-1 {
    background-color: #800040;
}


.button-2 {
    background-color: #8080ff;
}

.button-3 {
    background-color: #004080;
}

.button-4 {
    background-color: #5d9d1e;
}