@charset "UTF-8";
/*変数*/
:root {
  --main_color: #d0eac4;

  --white: #fff;
  --black: #555;
  --gray: #ddd;
  --orange1: #fafcff;
  --orange2: #7f95b0;
  --orange3: #1d4267;
  --red: #c54159;
  --link_color: #1d4267;
}

/*--------------------------------------
リセットCSS
--------------------------------------*/
*, ::before, ::after {-webkit-box-sizing: border-box; box-sizing: border-box; border-style: solid; border-width: 0;}
html { line-height: 1.15; -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent;}
body { margin: 0;}
main { display: block;}
p, table, blockquote, address, pre, iframe, form, figure, dl { margin: 0;}
h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; margin: 0;}
ul, ol { margin: 0; padding: 0; list-style: none;}
dt { font-weight: 700;}
dd { margin-left: 0;}
hr { -webkit-box-sizing: content-box; box-sizing: content-box; height: 0; overflow: visible; border-top-width: 1px; margin: 0; clear: both; color: inherit;}
pre { font-family: monospace, monospace; font-size: inherit;}
address { font-style: inherit;}
a { background-color: transparent; text-decoration: none; color: inherit;}
abbr[title] { -webkit-text-decoration: underline dotted;text-decoration: underline dotted;
}
code, kbd, samp { font-family: monospace, monospace; font-size: inherit;}
small { font-size: 80%;}
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline;}
sub { bottom: -0.25em;}
sup { top: -0.5em;}
svg, img, embed, object, iframe { vertical-align: bottom;}
button, input, optgroup, select, textarea { -webkit-appearance: none; -moz-appearance: none; appearance: none; vertical-align: middle; color: inherit; font: inherit; background: transparent; padding: 0; margin: 0; border-radius: 0; text-align: inherit; text-transform: inherit;}
[type=checkbox] { -webkit-appearance: checkbox; -moz-appearance: checkbox; appearance: checkbox;}
[type=radio] { -webkit-appearance: radio; -moz-appearance: radio; appearance: radio;}
button, [type=button], [type=reset], [type=submit] { cursor: pointer;}
button:disabled, [type=button]:disabled, [type=reset]:disabled, [type=submit]:disabled { cursor: default;}
:-moz-focusring { outline: auto;}
select:disabled { opacity: inherit;}
option { padding: 0;}
fieldset { margin: 0; padding: 0; min-width: 0;}
legend { padding: 0;}
progress { vertical-align: baseline;}
textarea { overflow: auto;}
[type=number]::-webkit-inner-spin-button, [type=number]::-webkit-outer-spin-button { height: auto;}
[type=search] { outline-offset: -2px;}
[type=search]::-webkit-search-decoration { -webkit-appearance: none;}
::-webkit-file-upload-button { -webkit-appearance: button; font: inherit;}
label[for] { cursor: pointer;}
details { display: block;}
summary { display: list-item;}
[contenteditable]:focus { outline: auto;}
table { border-color: inherit;}
caption { text-align: left;}
td, th { vertical-align: top; padding: 0;}
th { text-align: left; font-weight: 700;}


/*--------------------------------------
サイト共通定義
--------------------------------------*/
html {
  /* scroll-behavior: smooth; */
  scroll-padding-top: 60px;
}

body {
  line-height: 1.4;
  letter-spacing: 1px;
  margin: 0 auto;
  min-width: 320px;
  width: 100%;
  color: var(--black);
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  font-family: "Helvetica Neue", Helvetica, Arial, Roboto, "Droid Sans", "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "游ゴシック", "Yu Gothic", "游ゴシック体", "YuGothic", "Meiryo UI", "メイリオ", Meiryo, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
  font-weight: 400;
  font-style: normal;
  font-size: 14px;
  position: relative;
  word-break: break-word;
}
body.open {
  overflow: hidden !important;
}
@media (min-width: 1025px) {
  body.open {
    overflow: auto !important;
  }
}

/* body::-webkit-scrollbar {
  width: 10px;
}
body::-webkit-scrollbar-track {
  background-color: #fff;
}
body::-webkit-scrollbar-thumb {
  background-color: var(--main_color);
  border-radius: 100px;
} */
::-moz-selection {
  background: var(--main_color);
  color: #fff;
}
::selection {
  background: var(--main_color);
  color: #fff;
}
ul::-webkit-scrollbar {
  display: none;
}

.wrapper {
  width: 100%;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
@media (min-width: 768px) {
  .wrapper {
    display: grid;
    grid-template-columns: min(26%, 300px) 1fr;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.inner { padding: clamp(30px,4vw,60px); }
.sec { max-width: 800px; margin: clamp(30px,4vw,60px) auto 0; }
.sec:first-child { margin-top: 0; }

img { width: 100%; height: auto; }

iframe { max-width: 100%; }

.mb_10 { margin-bottom: 10px; }
.mb_15 { margin-bottom: 15px; }
.mb_20 { margin-bottom: 20px; }
.mb_25 { margin-bottom: 25px; }
.mb_30 { margin-bottom: 30px; }

.color_main    { color: var(--main_color); }
.color_black   { color: var(--black); }
.color_red     { color: var(--red); }
.color_orange  { color: var(--orange2); }
.color_orange2 { color: var(--orange3); }

.fs_08 { font-size: .8em; }
.fs_12 { font-size: 1.2em; }

.bold { font-weight: bold; }

.list_type_disc { list-style-type: disc; margin-left: 1em; }
.list_type_disc li:not(:last-child) { margin-bottom: 10px; }
.list_type_num li { counter-increment: num; text-indent: -1.3em; margin-left: 1.3em; }
.list_type_num li::before { content: counter(num)". "; }
.list_type_num li:not(:last-child) { margin-bottom: 10px; }

.idt { text-indent: 1.1em; }

.sp { display: block; }
.pc { display: none; }
@media (min-width: 600px) {
  .sp { display: none; }
  .pc { display: block; }
}

/* リンク */
a:link , a:visited {
  color: var(--link_color);
  transition: all 0.4s ease-out;
}
a:hover { opacity: .6; }

/* 区切り線 */
.split {
  padding-bottom: 30px;
  background-image: linear-gradient(to right, var(--gray) 4px, transparent 0px);
  background-size: 8px 1px;
  background-repeat: repeat-x;
  background-position: left bottom;
}

/*--------------------------------------
SPヘッダー
--------------------------------------*/
.sp_header {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  width: 100%;
  height: 60px;
  background: var(--main_color);
  z-index: 10;
}
@media (min-width: 768px) {
  .sp_header {
    display: none;
  }
}

/* logo */
.sp_header .logo {
  padding: 0 60px;
}
.sp_header .logo img {
  width: 100%;
  max-width: 260px;
  height: auto;
  display: inline-block;
  vertical-align: middle;
}

/* ハンバーガーメニューボタン */
.sp_header nav {
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 100%;
}

/* ハンバーガーメニュー */
.sp_header .nav_wrap {
  position: fixed;
  -webkit-overflow-scrolling: auto;
  width: 100%;
  height: calc(100vh - 60px);
  top: 60px;
  right: 0;
  gap: 20px;
  background: var(--white);
  -webkit-transition: 0.3192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
  transition: 0.3192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
  -webkit-transform: scale(1, 0);
          transform: scale(1, 0);
  -webkit-transform-origin: top;
          transform-origin: top;
  -ms-flex-line-pack: center;
      align-content: center;
}
@media (min-width: 768px) {
  .sp_header .nav_wrap {
    padding: 50px;
  }
}
.sp_header .nav_wrap .nav_list {
  width: 100%;
  height: 100%;
  padding: 20px 40px 120px;
  background: var(--main_color);
  overflow-y: scroll;
}
.sp_header .nav_wrap .nav_list::-webkit-scrollbar {
  width: 4px;
}
.sp_header .nav_wrap .nav_list::-webkit-scrollbar-track {
  background-color: var(--main_color);
}
.sp_header .nav_wrap .nav_list::-webkit-scrollbar-thumb {
  background-color: var(--orange2);
  border-radius: 10px;
}
@media (min-width: 768px) {
  .sp_header .nav_wrap .nav_list {
    padding: 0;
  }
}
.sp_header .nav_wrap li {
  opacity: 0;
  transition: all 0.4s ease-out;
  position: relative;
}
.sp_header .nav_wrap li > a {
  text-decoration: none;
  color: var(--white);
  width: 100%;
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  z-index: 1;
  padding: 15px 10px;
  border-bottom: 1px solid var(--orange2);
  transition: all 0.4s ease-out;
}

/* ハンバーガーメニューボタン */
.sp_header .menu-btn {
  display: none;
}

.sp_header .menu-btn ~ .nav_wrap{
  transform: translateX(-200vw);
  transition: .7s cubic-bezier(0.9, 0, 0.1, 1);
}
.sp_header .menu-btn:checked ~ .nav_wrap{
  transform: translateX(0);
}
.sp_header .menu-btn:checked ~ .nav_wrap a,
.sp_header .menu-btn:checked ~ .nav_wrap li {
  opacity: 1;
}

.sp_header .menu-btn:checked ~ .menu-icon .navicon:before {
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
}
.sp_header .menu-btn:checked ~ .menu-icon .navicon:after {
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
}
.sp_header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before {
  top: 0;
}
.sp_header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
  bottom: 0;
}
.sp_header .menu-btn:checked ~ .menu-icon .navicon {
  background: rgb(0 0 0 / 0);
  -webkit-transition: 0.2192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
  transition: 0.2192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
}

.sp_header .menu-icon {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  position: relative;
  height: 60px;
  background: var(--main_color);
  cursor: pointer;
  -webkit-tap-highlight-color: rgb(0 0 0 / 0);
  z-index: 1;
  position: relative;
}
.sp_header .menu-icon .navicon {
  background: var(--orange3);
  display: block;
  height: 2px;
  width: 30px;
  border-radius: 4px;
  position: relative;
  -webkit-transition: 0.3192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
  transition: 0.3192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
}
.sp_header .menu-icon .navicon:before,
.sp_header .menu-icon .navicon:after {
  content: "";
  display: block;
  height: 100%;
  width: 100%;
  border-radius: 4px;
  position: absolute;
  background: var(--orange3);
  -webkit-transition: 0.3192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
  transition: 0.3192s cubic-bezier(0.04, 0.04, 0.12, 0.96) 0.1008s;
}
.sp_header .menu-icon .navicon:before {
  top: 9px;
}
.sp_header .menu-icon .navicon:after {
  bottom: 9px;
}

/*--------------------------------------
ヘッダー
--------------------------------------*/
header {
  background: var(--orange1);
  width: 100%;
  display: none;
}
@media (min-width: 768px) {
  header {
    display: flex;
    flex-direction: column;
    height: 100vh;
  }
}

/* h1 */
header h1 {
  background: var(--main_color);
  padding: 30px 15px;
  display: flex;
  justify-content: center;
  align-items: center;
}
@media (min-width: 768px) {
  header h1 {
    flex-shrink: 0;
  }
}

/* PC用ナビゲーション */
header .header_nav {
  margin: 15px;
}
header .header_nav li a {
  color: var(--black);
  display: block;
  padding: 15px 10px;
  border-bottom: solid 1px var(--orange2);
  position: relative;
  transition: all 0.4s ease-out;
}
header .header_nav li a:hover,
header .header_nav li.active a {
  color: var(--main_color);
  opacity: 1;
}
@media (min-width: 768px) {
  header nav {
    overflow: hidden;
    flex-grow: 1;
  }
  header .header_nav {
    overflow-y: auto;
    max-height: 100%;
    padding-bottom: 40px;
  }
}

/*--------------------------------------
フッター
--------------------------------------*/
footer {
  padding: 0 clamp(30px, 4vw, 60px) 20px;
}
footer .copyright {
  display: block;
  max-width: 800px;
  margin: auto;
  font-size: 10px;
  border-top: solid 1px var(--main_color);
  padding-top: 20px;
}

/*--------------------------------------
メイン
--------------------------------------*/
/* メインビジュアル */
.mainvisual {
  position: relative;
  margin-top: 60px;
}
@media (min-width: 768px) {
  .mainvisual {
    margin-top: 0;
  }
}

/* サブビジュアル */
.subvisual {
  width: 100%;
  height: max(180px, 40vw);
  background: url(../images/subvisual_bg_sp.jpg) center top / cover no-repeat;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 60px;
}
.subvisual img {
  max-width: max(320px, 60vw);
}
@media (min-width: 768px) {
  .subvisual {
    height: min(24vw, 280px);
    background: url(../images/subvisual_bg_pc.jpg) center top / cover no-repeat;
    margin-top: 0;
  }
  .subvisual img {
    max-width: min(44vw, 370px);
  }
}

/* コンテンツ */
.contents::-webkit-scrollbar {
  width: 10px;
}
.contents::-webkit-scrollbar-track {
  background-color: #fff;
}
.contents::-webkit-scrollbar-thumb {
  background-color: var(--main_color);
  border-radius: 100px;
}
@media (min-width: 768px) {
  .contents {
    height: 100vh;
    overflow-y: scroll;
  }
}

/*--------------------------------------
トップページ
--------------------------------------*/
.index .section_information .primary_title {
  padding-bottom: 0;
  border-bottom: none;
}

.index .section_information .frame {
  max-height: 800px;
  overflow-y: scroll;
  padding-right: 15px;
  margin-right: -15px;
}
.index .section_information .frame::-webkit-scrollbar {
  width: 4px;
}
.index .section_information .frame::-webkit-scrollbar-track {
  background-color: #fff;
}
.index .section_information .frame::-webkit-scrollbar-thumb {
  background-color: var(--main_color);
  border-radius: 10px;
}

.index .section_information li {
  border-bottom: solid 1px var(--gray);
  padding: 15px 0;
}
.index .section_information li:first-child {
  padding-top: 0;
}
.index .section_information li time {
  display: block;
  color: var(--main_color);
  font-size: 12px;
  margin-bottom: 5px;
}
.index .section_information li img {
  max-width: 100% !important;
  height: auto !important;
}
@media (min-width: 1000px) {
  .index .section_information li {
    display: grid;
    grid-template-columns: 120px 1fr;
  }
  .index .section_information li time {
    width: 130px;
    margin: 2px 0;
  }
  .index .section_information li p {
    width: calc(100% - 100px);
  }
}

/* バナー */
.index .section_bnr ul {
	display: flex;
	/* justify-content: center; */
	flex-direction: row;
	align-items: center;
	flex-wrap: wrap;
  gap: 15px;
}

/*--------------------------------------
タイトル
--------------------------------------*/
.large_title {
  color: var(--orange3);
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 20px;
}

.primary_title {
  color: var(--orange3);
  font-size: 20px;
  margin-bottom: 30px;
  padding-bottom: 10px;
  border-bottom: solid 1px var(--orange2);
}

.secondary_title {
  font-weight: bold;
  margin-bottom: 20px;
  padding: 5px 0 5px 15px;
  border-left: solid 4px var(--main_color);
}

/*--------------------------------------
共通のボタン
--------------------------------------*/
.btn_01 {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 16px;
  color: #fff !important;
  background: var(--link_color);
  border-radius: 4px;
  text-align: left;
  max-width: 100%;
  padding: 10px;
  /* margin: auto; */
}
.btn_01 img {
  width: 18px;
  height: auto;
  margin-right: 10px;
}
@media (min-width: 600px) {
  .btn_01 {
    max-width: 380px;
  }
  .btn_01.btn_short {
    max-width: 120px;
  }
}

/*--------------------------------------
下層ページ
--------------------------------------*/
/* ---------- ご挨拶 ---------- */
.section_greeting li {
  display: grid;
  grid-template-columns: 1fr;
  justify-content: center;
  gap: 30px;
}
.section_greeting li:not(:last-child) {
  margin-bottom: clamp(30px,4vw,60px);
}
.section_greeting .img_box {
  max-width: 160px;
  margin: auto;
}
.section_greeting .txt_box .title {
  font-size: 20px;
  font-weight: bold;
}
.section_greeting .txt_box .name {
  font-size: 21px;
  font-weight: bold;
}
.section_greeting .greeting_txt {
  line-height: 1.8;
}
@media (min-width: 600px) {
  .section_greeting li {
    grid-template-columns: 160px 1fr;
  }
  .section_greeting .img_box {
    max-width: 100%;
  }
}

/* ---------- 研究発表申し込み ---------- */
.contents_abstract .table_abstract_keyword {
  width: 100%;
  border-spacing: 0;
}
.contents_abstract .table_abstract_keyword td {
  height: 40px;
  border: solid 1px var(--black);
  border-bottom: 0;
  padding: 0 10px;
  line-height: 1.1;
  vertical-align: middle;
}
.contents_abstract .table_abstract_keyword tr:last-child td {
  border-bottom: solid 1px var(--black);
}
.contents_abstract .table_abstract_keyword td:first-child {
  width: 50px;
  border-right: 0;
  text-align: center;
  font-weight: bold;
}
.contents_abstract table:nth-of-type(2) tr:first-child td {
  border-top: 0;
}
.contents_abstract table:nth-of-type(2) tr:last-child td {
  height: 41px;
}
@media (min-width: 600px) {
  .contents_abstract .abstract_keyword {
    display: flex;
    align-items: flex-start;
  }
  .contents_abstract table:nth-of-type(2) tr:first-child td {
    border-top: solid 1px var(--black);
  }
  .contents_abstract table:nth-of-type(2) td:first-child {
    border-left: 0;
  }
}

/* ---------- 宿泊・エクスカーション ---------- */
.contents_accommodation .table_accommodation {
  width: 100%;
  border-spacing: 0;
}
.contents_accommodation .table_accommodation th,
.contents_accommodation .table_accommodation td {
  padding: 10px;
  text-align: center;
  vertical-align: middle;
}
.contents_accommodation .table_accommodation th {
  color: var(--orange3);
  background: var(--orange1);
  font-size: 12px;
  line-height: 1.1;
}
.contents_accommodation .table_accommodation td {
  border-bottom: solid 1px var(--gray);
}
.contents_accommodation .table_accommodation th:nth-of-type(1) {
  width: 50px;
}
.contents_accommodation .table_accommodation th:nth-of-type(4) {
  width: 85px;
}
.contents_accommodation .table_accommodation th:nth-of-type(5) {
  width: 110px;
}
.contents_accommodation .table_accommodation td:nth-of-type(2),
.contents_accommodation .table_accommodation td:nth-of-type(3) {
  text-align: left;
}
@media screen and (max-width: 900px) {
  .contents_accommodation .table_accommodation th {
    display: none;
  }
  .contents_accommodation .table_accommodation td {
    display: block;
    text-align: left;
    border-bottom: none;
  }
  .contents_accommodation .table_accommodation td::before {
    display: block;
    width: 100%;
    content: attr(data-label);
    color: var(--orange3);
    border-bottom: solid 1px var(--orange2);
    font-size: 12px;
    font-weight: bold;
    padding: 5px 0 3px;
    margin-bottom: 7px;
  }
  .contents_accommodation .table_accommodation td:first-child {
    color: var(--orange3);
    background: var(--orange1);
    font-weight: bold;
    text-align: center;
    padding: 5px 10px;
    margin: 10px 0 5px;
  }
  .contents_accommodation .table_accommodation td:not(:first-child) {
    padding: 0 0 10px;
  }
  .contents_accommodation .table_accommodation td:first-child::before {
    display: none;
  }
}

.contents_accommodation .table_carrental {
  width: 100%;
  border-spacing: 0;
}
.contents_accommodation .table_carrental th,
.contents_accommodation .table_carrental td {
  padding: 10px;
  text-align: center;
  vertical-align: middle;
}
.contents_accommodation .table_carrental th {
  color: var(--orange3);
  background: var(--orange1);
}
.contents_accommodation .table_carrental td {
  border-bottom: solid 1px var(--gray);
}