@charset 'utf-8';
body {
 margin: 0;
 padding: 0;
 color: #222;
}
header {
 background: #FFF;
 filter: drop-shadow(5px 5px 5px rgba(0, 0, 0, 0.1));
 position: fixed;
 width: 100%;
 top: 0;
 z-index: 10;
}
.logo {
 max-width: 960px;
 display: flex;
 justify-content: center;
 align-items: center;
 margin: 30px auto;
}
.logo img {
 width: 60px;
}
.title {
 margin-left: 10px;
}
.logo h1 {
 display: block;
 font-size: 2.0em;
}
.logo p {
 display: block;
}
header nav {
 width: 100%;
}
header nav ul {
 display: flex;
 max-width: 960px;
 justify-content: center;
 margin: 0 auto;
}
header nav ul li {
 width: 22%;
}
/*header nav ul li:nth-child(2){
	width: 28%;
}*/
header nav ul li a:visited, header nav ul li a:link {
 text-decoration: none;
 color: #222;
 display: block;
 text-align: center;
 font-size: 1.4em;
 font-weight: bold;
 padding: 0;
}
header nav ul li a span {
 display: block;
 font-size: 1.0em;
 font-weight: normal;
 letter-spacing: 1px;
 margin: -3px 0 6px 0;
}
header nav ul li a::after {
 content: '';
 display: block;
 border-bottom: 3px solid #222;
 margin: 0 auto;
 width: 0;
 transition: all .3s;
}
header nav ul li a:hover::after {
 width: 100%;
}
.main_img img {
 width: 100%;
}
.main_img_text {
 display: flex;
 justify-content: space-between;
 width: 100%;
}
.main_img_text p {
 width: 50%;
 margin: 10px 0 0;
 text-align: center;
 font-size: 1.4em;
 font-weight: bold;
}
.main_img_text p span {
 display: none;
}
.content {
 width: 100%;
 padding: 100px 0;
}
.content_area {
 max-width: 960px;
 margin: 0 auto;
}
.content_area h2 {
 display: block;
 margin: 0 auto;
 font-size: 1.8em;
 position: relative;
 text-align: center;
}
.content_area h2 span {
 display: block;
 font-size: 0.8em;
 letter-spacing: 2px;
 margin: -4px auto 0;
 color: #757575;
}
.about h2::after {
 content: '';
 display: block;
 position: absolute;
 bottom: -25px;
 height: 8px;
 background: #d0d0d0;
 width: 70%;
 margin: auto;
 left: 0;
 right: 0;
}
.content_area .content_area_box {
 margin: 50px auto 0;
 width: 90%;
 font-size: 1.3em;
 line-height: 2.3;
}
.content_area .content_area_box h3 {
 font-size: 1.3em;
 margin: 40px 0 8px;
 padding: 0 0 0 10px;
 border-bottom: 1px dotted #999;
 border-left: 5px solid #666;
}
.content_area .content_area_box h4 {
 font-size: 1.2em;
 margin: 16px 0 8px;
 padding: 0 0 0 10px !important;
 border-left: 1px dotted #333;
}
.content_area .content_area_box ol, .content_area .content_area_box ul {
 padding: 5px 0px 5px 25px
}
.content_area .content_area_box ul {
 list-style-type: disc
}
.content_area .content_area_box ol li .content_area .content_area_box ul li {
 padding: 5px 0px
}
.news {
 background: #ededed;
}
.news_area {
 height: 400px;
 overflow-y: scroll;
 margin-top: 30px;
 width: 95%;
 margin: 0 auto;
}
.news_area table {
 width: 100%;
 font-size: 1.2em;
}
.news_area table tr {
 border-bottom: 1px solid #9d9d9d;
}
.news_area table tr td {
 padding: 16px 0 4px 0;
}
.news_area table tr td.date {
 width: 140px;
}
.news_area table tr td time::before {
 font-family: FontAwesome;
 content: '\f140';
 font-size: 0.8em;
 color: #9d9d9d;
 margin-right: 5px;
}
footer {
 background: #222;
}
footer p {
 color: #fff;
 text-align: center;
 letter-spacing: 1px;
 font-size: 1.1em;
 line-height: 6;
}
.bnr a {
 display: inline-block;
}
.bnr a:hover {
 opacity: 0.7;
}
.bnr img {
 max-width: 234px;
 width: 100%;
 margin-top: 15px
}
.list_bg li:nth-child(even) {
 background: #d4dcd3 !important;
 padding: 0 5px
}
.list_bg {
 line-height: 1.6;
}
.txt {
  font-family: "Zen Old Mincho", serif;
  font-weight: 400;
  font-style: normal;
}

/*---------------------------
下層ページ
---------------------------*/
#page_header {
 padding-top: 10px;
 filter: drop-shadow(5px 0px 5px rgba(0, 0, 0, 0.1));
 background: rgba(255, 255, 255, 0.9);
}
/* ==== Research === */
.research_movie {
 display: flex;
 flex-wrap: wrap;
 width: 100%;
 margin: 0 0 10px;
}
.research_movie div {
 width: calc(100% / 2 - 10px);
 margin: 0 5px;
}
.research_movie div iframe {
 height: 250px;
}
/* ==== members === */
.member_profile {
 display: flex;
 flex-wrap: wrap;
}
.member_profile_img {
 width: 180px;
 height: 230px;
 padding: 3px;
 border: 1px solid #D2D2D2;
 box-sizing: border-box;
}
.member_profile_img img {
 width: 100%;
}
.member_profile_text {
 line-height: 1.5
}
.members_list {
 display: flex;
 flex-wrap: wrap;
 margin: 30px 0;
 padding: 0 !important;
}
.members_list li {
 width: calc(100% / 4 - 10px);
 margin: 0 5px 10px;
 list-style: none;
 text-align: center;
}
.members_list li span {
 display: block;
 font-size: 0.9em;
}
.members_list li img {
 width: 100%;
 height: auto;
}
/* ==== publications === */
.publication_list li a {}
.publication_list li a:after {
 content: url(../images/icon_1r_24.png);
 position: relative;
 top: 5px;
}
.publication_list li .p_imgbox {
 float: right;
 margin-left: 1.4em;
 margin-bottom: 0.5em;
 box-shadow: 0 0 15px rgba(0, 0, 0, .3);
}
.publication_list li .p_imgbox a:after {
 content: "";
}
/* ==== joint us === */
#joint_map {
 margin: 20px 0 0;
}
/* ==== student === */
.student .content_area_box {
 display: flow-root;
}
.clt_box {
 width: 700px;
 margin: 0 auto;
}
.clt_box_img {
 text-align: center;
}
.clt_box p {
 text-align: center;
}
/* ==== club activities === */
.club_list {
 display: flex;
 justify-content: center;
 align-items: flex-start;
 padding-left: 0 !important;
}
.club_list li {
 list-style: none;
 width: calc((100% - 20px) / 3);
 margin-right: 10px;
 text-align: center;
}
.club_list li:last-child {
 margin-right: 0;
}
.club_list li figure {
 display: block;
 width: 100%;
 height: 200px;
 overflow: hidden;
}
.club_list li a {
 text-decoration: none;
 color: #222;
}
.club_list li a p {
 font-weight: bold;
 line-height: 1.7;
 padding: 10px 0;
}
.club_list li a p span {
 display: block;
 font-size: 0.85em;
 letter-spacing: 0.1em;
 color: #757575;
}
.club_list li a img {
 max-width: 100%;
 height: 200px;
 object-fit: cover;
 transform: scale(1, 1);
 transition: 0.5s;
}
.club_list li img:hover {
 transform: scale(1.3, 1.3);
}
/* ==== ft_wp === */
/*---footer浮き対策。ページの長さができたら不要です---*/
.ft_wp {
 display: flex;
 flex-flow: column;
 height: 100vh;
}
.ft_bt {
 margin-top: auto;
}
.btn_black {
 background-color: #000;
 text-align: center;
 width: 50%;
 padding: 3px;
 font-size: 20px;
 margin: 0 auto;
}
.btn_black:hover {
 background-color: #fff;
 border: 3px solid #000;
 padding: 0;
}
.btn_black a {
 color: #fff;
 text-decoration: none;
 font-weight: 700;
}
.btn_black:hover a {
 color: #000;
}
.youtube {
 position: relative;
 padding-bottom: 56.25%;
 padding-top: 30px;
 height: 0;
 overflow: hidden;
 margin-bottom: 2rem;
}
.youtube iframe {
 position: absolute;
 top: 0;
 left: 0;
 width: 100%;
 height: 100%;
}
/* .movie figcaption {
    width: 50%;
} */
.instagram {
 position: relative;
}
.instagram::before {
 content: '\f16d';
 font-family: "Font Awesome 5 Brands";
 font-weight: 900;
 padding: 5px;
}
/****grid***/
.grid01 {
 display: grid;
 grid-template-columns: 1fr;
 width: 100%;
 grid-gap: 10px
}
.grid01 img {
 width: 100%;
}
.grid02 {
 display: grid;
 grid-template-columns: 1fr 1fr;
 width: 100%;
 grid-gap: 10px;
}
.grid02 img {
 width: 100%;
}
.grid03 {
 display: grid;
 grid-template-columns: 1fr 1fr 1fr;
 width: 100%;
 grid-gap: 10px;
}
.grid03 img {
 width: 100%;
}
/*----------------------------------------------------------------------------
******************************************************************************
** pagetop
******************************************************************************
----------------------------------------------------------------------------*/
.pt {
 border-radius: 50%;
 background-color: #333;
 bottom: 30px;
 cursor: pointer;
 display: flex;
 align-items: center;
 justify-content: center;
 height: 60px;
 right: 30px;
 position: fixed;
 width: 60px;
 z-index: 100;
}
.pt:hover {
 opacity: 0.6;
}
.pt_btn {
 cursor: pointer;
 display: block;
 width: 20px;
 height: 20px;
 margin-top: 8px;
 transform: rotate(45deg);
 position: relative;
}
.pt_btn::before, .pt_btn::after {
 background-color: #FFF;
 content: "";
 display: block;
 top: 0;
 left: 0;
 position: absolute;
}
.pt_btn::before {
 width: 7px;
 bottom: 0;
}
.pt_btn::after {
 height: 7px;
 right: 0;
}
@media screen and (min-width:579px) {
 .movie_contain {
  display: flex;
  justify-content: space-around;
  gap: 10px;
 }
 .movie {
  width: 100%;
  margin: 0 auto 20px;
 }
 .movie video {
  height: 220px;
  max-width: 90%;
 }
 .member_photo {
  text-align: center;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
 }
 .member_photo img {
  width: 30%;
  margin-bottom: 5%;
  margin-right: 5%;
 }
 .member_photo img:nth-child(3n) {
  margin-right: 0;
 }
}
@media screen and (max-width:579px) {
 body {
  word-break: break-all;
 }
 .logo {
  margin: 20px auto 10px;
 }
 header {
  position: relative;
 }
 header nav ul {
  flex-wrap: wrap;
 }
 header nav ul li {
  width: calc(100% / 2);
  margin: 0 0 10px;
 }
 /*header nav ul li:nth-child(2){
    	width: 55%;
    }*/
 header nav ul li a:visited, header nav ul li a:link {
  margin-top: 5px;
 }
 header nav ul li a::after {
  width: 80%;
  border-bottom: 1px solid #222;
 }
 header nav ul li a span {
  margin: -3px 0 3px 0;
 }
 .main_img_text {
  display: flex;
  justify-content: space-between;
  width: 100%;
 }
 .main_img_text p {
  width: 50%;
  margin: 5px 0 0;
  text-align: center;
  font-size: 1.0em;
  font-weight: bold;
 }
 .main_img_text p span {
  display: inline;
 }
 .content {
  padding: 50px 0;
 }
 .content_area p {
  font-size: 1.0em;
 }
 .news_area table tr td {
  vertical-align: top;
 }
 .news_area table tr td time {
  margin-right: 10px;
 }
 footer p {
  padding: 15px 5px;
  line-height: 2;
 }
 /*---------------------------
下層ページ
---------------------------*/
 #page_header {
  position: fixed;
 }
 #page_header + .content {
  /*        padding-top:135px;*/
  padding-top: 215px;
 }
 /* ==== Research === */
 .research_movie {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0 0 10px;
 }
 .research_movie div {
  width: 100%;
  margin: 0;
 }
 .research_movie div iframe {
  height: 250px;
 }
 /* ==== members === */
 .member_profile {
  display: flex;
  flex-direction: colmun;
  text-align: center;
 }
 .member_profile_img {
  width: 180px;
  margin: 10px auto;
  padding: 3px;
  border: 1px solid #D2D2D2;
  box-sizing: border-box;
 }
 .member_profile_img img {
  width: 100%;
 }
 .member_profile_text {
  line-height: 1.5
 }
 .members_list {
  display: flex;
  flex-wrap: wrap;
  margin: 30px 0;
  padding: 0 !important;
 }
 .members_list li {
  width: calc(100% / 2 - 10px);
  margin: 0 5px 10px;
  list-style: none;
  text-align: center;
  line-height: 2.0;
 }
 .members_list li span {
  display: block;
  font-size: 0.9em;
 }
 .members_list li img {
  width: 100%;
  height: auto;
 }
 /*----------------------------------------------------------------------------
******************************************************************************
** pagetop
******************************************************************************
----------------------------------------------------------------------------*/
 .pt {
  border-radius: 50%;
  background-color: #333;
  bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  right: 10px;
  position: fixed;
  width: 30px;
  z-index: 10;
 }
 .pt:hover {
  opacity: 0.6;
 }
 .pt_btn {
  cursor: pointer;
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  transform: rotate(45deg);
  position: relative;
 }
 .pt_btn::before, .pt_btn::after {
  background-color: #FFF;
  content: "";
  display: block;
  top: 0;
  left: 0;
  position: absolute;
 }
 .pt_btn::before {
  width: 5px;
  bottom: 0;
 }
 .pt_btn::after {
  height: 5px;
  right: 0;
 }
 /* ==== joint us === */
 #joint_map {
  position: relative;
  width: 100%;
  padding: 75% 0 0 0;
 }
 #joint_map iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
 }
 .clt_box {
  width: 100%;
  margin: 0 auto;
 }
 .clt_box img {
  width: 95%;
 }
 .content_area .content_area_box ol, .content_area .content_area_box ul {
  padding: 0;
 }
 .member_photo {
  width: 100%;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
 }
 .member_photo img {
  width: 49%;
  margin-bottom: 2%;
  margin-right: 2%;
 }
 .member_photo img:nth-child(2n) {
  margin-right: 0;
 }
 .movie {
  width: 100%;
  margin: 0 auto 20px;
  text-align: center;
 }
 .movie video {
  width: 100%;
 }
 /* ==== club activities === */
 .club_list {
  display: block;
 }
 .club_list li {
  width: 100%;
  height: auto;
 }
 img {
  max-width: 100%;
  height: auto
 }
}