@charset "utf-8";

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --max-width-page: clamp(960px, 80rem, 1920px);
  --max-width-content: min(80rem, 1920px);
  --padding-main: 1rem;
  --padding-nav: 0.5rem 1rem;
  --margin-bottom-header: 1.5rem;
  --color-body-bg: #fff;
  --color-text: #474747;
  --color-text-subtle: #585858;
  --color-text-strong: #2a2a2a;
  --color-heading: #274836;
  --color-link: #1a5fa0;
  --color-link-visited: #553580;
  --color-link-hover: #1a5fa0;
  --color-link-dark: #274836;
  --color-link-dark-hover: #274836;
  --color-nav-fg: #474747;
  --color-nav-bg: #e8eeeb;
  --color-btn-fg: #e0e8e2;
  --color-header-fg: #e0e8e2;
  --color-header-bg: #195422;
  --color-footer-bg: #e8eeeb;
  --color-border: #ccc;
  --color-table-header-bg: #f0f0f0;
  --transition-time-nav: 0.15s;
}

@media (min-width: 45rem) {
  :root {
    --margin-bottom-header: 2rem;
    --color-nav-fg: var(--color-text-strong);
    --color-nav-bg: var(--color-body-bg);
  }
}

body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-body-bg);
}

h1 {
  margin: 0 0 2rem;
  overflow: hidden;
  font-size: 1.728rem;
  font-size: clamp(1.6rem, 4.8vw, 1.728rem);
  font-weight: bold;
  line-height: 1.5;
  color: var(--color-heading);
}

h2 {
  margin: 2.5rem 0 1.5rem;
  font-size: 1.44rem;
  font-weight: bold;
  line-height: 1.5;
  color: var(--color-heading);
  border-bottom: 2px solid var(--color-heading);
}

h3 {
  margin: 2rem 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-heading);
}

h1+h2 {
  margin-top: 2rem;
}

h2+h3 {
  margin-top: 1.5rem;
}

p {
  margin: 0 0 1em;
}

ol, ul, dl {
  margin: 0 0 1rem;
}

ol, ul {
  padding-left: 2.5em;
}

li, dd {
  margin-bottom: 0.5em;
}

dd {
  margin-left: 1em;
}

ul li::marker {
  font-size: 1.25em;
  line-height: 1;
}

dt {
  font-weight: bold;
}

img {
  max-width: 100%;
  object-fit: contain;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:visited {
  color: var(--color-link-visited);
}

a:active, a:hover {
  text-decoration-thickness: 0.15em;
}

.page-wrapper {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

.site-header {
  position: relative;
  z-index: 20;
  margin: 0 0 var(--margin-bottom-header);
  background-color: var(--color-header-bg);
}

.page-content {
  max-width: var(--max-width-page);
  margin: 0 0 2.5rem;
  background-color: #fff;
}

.main {
  grid-area: main;
  padding: 0 var(--padding-main);
}

.footer {
  color: var(--color-text-subtle);
  background-color: var(--color-footer-bg);
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: none;
  background-color: rgb(0 0 0 / 50%);
}

.header-inner, .footer-inner {
  max-width: var(--max-width-page);
  margin: 0 auto;
}

.header-inner {
  display: grid;
  grid-template: "logo btn"1fr / 1fr auto;
  column-gap: 0.25rem;
}

.footer-inner {
  padding: 1.5rem var(--padding-main) 0.5rem;
}

.site-logo {
  grid-area: logo;
  padding: 1rem 0.75rem;
  padding: clamp(0.25rem, 3vw, 1rem) clamp(0.25rem, 3vw, 0.75rem);
  font-size: 0.8rem;
  font-size: clamp(0.6rem, 3.5vw, 0.8rem);
  line-height: 1.1;
  color: var(--color-header-fg);
}

.site-logo__rows {
  display: flex;
  flex-wrap: wrap;
  -webkit-column-gap: 4em;
  column-gap: 4em;
  align-items: last baseline;
}

.site-logo__row {
  display: block;
  width: auto;
  margin-bottom: 0.5em;
}

.site-logo__dept-lines {
  width: auto;
  vertical-align: middle;
}

.site-logo__dept-line {
  display: inline;
  margin-right: 0.2em;
  font-size: max(14px, 1em);
}

.site-logo__dept-name--large {
  font-size: 1.6rem;
  font-size: clamp(max(0.8rem, 14px), calc((100vw - 6rem) / 11), 1.6rem);
  font-weight: 400;
}

.site-logo__dept-name--en {
  padding-left: 0.125em;
  font-size: max(14px, 1em);
}

.site-logo__link, .site-logo__link:visited,
.site-logo__link:hover {
  color: inherit;
  text-decoration: none;
}

.navigation-sidebar {
  display: none;
}

.navigation-ham {
  position: absolute;
  inset: unset;
  top: 0;
  left: 0;
  z-index: 20;
  display: none;
  width: clamp(10rem, calc((6rem + 100vw) * 0.5), calc(100vw - 4rem));
  max-width: calc(100vw - 4rem);
  padding: 1em 0;
  background-color: var(--color-nav-bg);
  border: none;
}

.navigation-ham:popover-open {
  display: block;
}

.navigation-ham::backdrop, .nav-backdrop {
  background: rgb(0 0 0 / 25%);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: none;
}


@supports not (selector(:popover-open)) {
  .navigation-ham.is-open {
    display: block;
  }

  .nav-backdrop.is-open {
    display: block;
  }
}

.nav-toggle-btn {
  z-index: 30;
  display: flex;
  flex-direction: column;
  grid-area: btn;
  align-items: center;
  padding: 0;
  padding: clamp(0.25rem, 3vw, 1rem) 0.25rem 0.25rem;
  color: var(--color-header-fg);
  cursor: pointer;
  background-color: var(--color-header-bg);
  border: none;
}

.nav-toggle-btn__icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 1.5rem;
  height: 1.3125rem;
  padding-bottom: 0.25rem;
  cursor: pointer;
}

.nav-toggle-btn__icon span {
  display: block;
  width: 100%;
  height: 0;
  border-top: 0.1875rem solid currentcolor;
}

.nav-toggle-btn__label {
  font-size: 0.875rem;
  line-height: 1;
}

@media (min-width: 45rem) {
  .page-content {
    display: grid;
    grid-template: "nav main"1fr / clamp(10rem, 20vw, 13rem) 1fr;
    -webkit-column-gap: clamp(4rem, calc(4vw / 45), 6rem);
    column-gap: clamp(4rem, calc(4vw / 45), 6rem);
    width: 100%;
    max-width: var(--max-width-content);
    margin-inline: auto;
  }

  .main {
    padding-top: 0.5rem;
    padding-right: 2rem;
    padding-left: 0;
  }

  .nav-toggle-btn {
    display: none;
  }

  .navigation-ham {
    display: none;
  }

  .navigation-sidebar {
    display: block;
    grid-area: nav;
  }
}

/* 本文が左に寄っているように見えるのを補正  */
@media (min-width: 80rem) {
  .page-content {
    transform: translateX(clamp(0px, calc((100vw - max(80rem, var(--max-width-content))) / 2), min(64px, 4rem)));
  }
}

.navigation__item, .navigation__sub-item {
  margin: 0;
}

.navigation__list,
.navigation__sub-list {
  padding-left: 0;
  margin: 0;
  list-style: none;
}

.navigation__list {
  color: var(--color-nav-fg);
}

.navigation__label {
  display: block;
  padding: var(--padding-nav);
  color: var(--color-text-subtle);
}

.navigation__link::before, .navigation__sub-link::before, .navigation__label::before {
  display: inline-block;
  margin-right: 0.25rem;
  vertical-align: middle;
  content: "";
  background-color: currentcolor;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
}

.navigation__link::before, .navigation__sub-link::before {
  width: 0.375rem;
  height: 0.625rem;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 12' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M 2 2 L6 6 L 2 10'/%3E%3C/svg%3E%0A");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 12' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M 2 2 L6 6 L 2 10'/%3E%3C/svg%3E%0A");
}

.navigation__label::before {
  width: 0.5rem;
  height: 0.375rem;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 9' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M 2 2 L6 6 L 10 2'/%3E%3C/svg%3E%0A");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 9' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M 2 2 L6 6 L 10 2'/%3E%3C/svg%3E%0A");
}

.navigation__link,
.navigation__sub-link {
  display: block;
  padding: var(--padding-nav);
  text-decoration: none;
}

.navigation__sub-link {
  padding-left: 1.5em;
}

.navigation__link,
.navigation__link:visited,
.navigation__sub-link,
.navigation__sub-link:visited {
  color: var(--color-nav-fg);
}

.navigation__link:hover, .navigation__sub-link:hover {
  color: var(--color-nav-fg);
  background-color: color-mix(in srgb, var(--color-nav-bg) 90%, var(--color-nav-fg));
}

.navigation__sub-list {
  color: var(--color-nav-fg);
}

.footer-address, .footer-nav-container {
  margin-bottom: 1rem;
}

.footer-address {
  max-width: 30rem;
  font-size: 1rem;
  font-style: normal;
}

.footer-nav-container {
  display: flex;
  flex-wrap: wrap;
  column-gap: 2rem;
  max-width: 20rem;
}

.footer-navigation {
  flex: 1 0 7.5rem;
  padding-left: 0;
  margin-bottom: 0;
  margin-left: 0;
  list-style: none;

}

@media(min-width: 45rem) {
  .footer-row {
    display: flex;
    gap: 2rem;
  }

  .footer-address {
    flex: 0.125 1 19rem;
    order: 1;
    min-width: 19rem;
  }

  .footer-nav-container {
    flex: 1 1 10rem;
    order: 2;
  }

}

.footer-copyright-notice {
  font-size: 0.9em;
}

.image-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin: 2rem 0;
}

@media (min-width: 45rem) {
  .image-row {
    gap: 8px;
    padding: 0 0.5rem;
  }
}

.image-row--wide {
  padding: 0;
  margin: 0 0 1rem;
}

.image-row__image {
  flex: 1 1 auto;
  width: 0;
  max-width: 100%;
  height: auto;
  max-height: clamp(360px, 22.5rem, 540px);
}

.figure-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: flex-end;
  padding: 0 1rem;
  margin: 2rem auto;
}

.figure-group__item {
  flex: 1 1 clamp(200px, 12.5rem, 300px);
  margin: 0;
  text-align: center;
}

.figure-group__row {
  display: flex;
  flex-wrap: nowrap;
  gap: 1rem;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.figure-group__image {
  flex: 0 1 auto;
  height: auto;
  max-height: clamp(360px, 22.5rem, 540px);
}

.figure-group__image--expand {
  flex: 1 1 auto;
  width: 0;
  min-width: 0;
}

.figure-group__caption {
  font-size: 0.9rem;
  text-align: start;
}

.table-container {
  container-name: table-container;
  container-type: inline-size;
  overflow-x: auto;
}

.staff-list {
  width: 100%;
  margin-bottom: 1rem;
  container-type: inline-size;
  border-collapse: collapse;
}

.staff-list__link, .staff-list__link:visited, .staff-list__link:active {
  color: var(--color-link-dark);
}

.staff-list__link:hover {
  color: var(--color-link-dark-hover);
}

.staff-list__cell--name {
  min-width: 8em;
  font-weight: bold;
}

.staff-list__header,
.staff-list__cell {
  padding: 0.5em;
  border: 1px solid var(--color-border);
}

.staff-list__header {
  background-color: var(--color-table-header-bg)
}

@container table-container (max-width: 29rem) {
  .staff-list__row {
    display: block;
    padding: 0.5em 0;
    border: none;
    border-bottom: 2px solid var(--color-border);
  }

  .staff-list__head {
    display: none;
  }

  .staff-list__row:first-child {
    border-top: 2px solid var(--color-border);
  }

  .staff-list__cell {
    position: relative;
    display: block;
    padding: 0.25em;
    padding-left: 5.5em;
    border: none;
  }

  .staff-list__cell--name {
    padding-left: 0.5rem;
    font-size: 1.2rem;
  }

  .staff-list__cell::before {
    position: absolute;
    left: 0.5em;
    width: 6em;
    font-weight: bold;
    content: attr(data-label);
  }

  .staff-list__cell--name::before {
    content: none;
  }
}

@supports not (container-type: inline-size) {
  @media (max-width: 52rem) {
    .staff-list__row {
      display: block;
      padding: 0.5em 0;
      border: none;
      border-bottom: 2px solid var(--color-border);
    }

    .staff-list__head {
      display: none;
    }

    .staff-list__row:first-child {
      border-top: 2px solid var(--color-border);
    }

    .staff-list__cell {
      position: relative;
      display: block;
      padding: 0.25em;
      padding-left: 5.5em;
      border: none;
    }

    .staff-list__cell--name {
      padding-left: 0.5em;
    }

    .staff-list__cell::before {
      position: absolute;
      left: 0.5em;
      width: 6em;
      font-weight: bold;
      content: attr(data-label);
    }

    .staff-list__cell--name::before {
      content: none;
    }
  }
}

.staff-profile__summary {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25em;
  align-items: flex-start;
  margin-bottom: 2em;
}

.staff-profile__photo {
  width: clamp(120px, 7.5rem, 180px);
  height: clamp(160px, 10rem, 240px);
}

.staff-profile__summary-body {
  flex: 1;
  min-width: 10rem;
  padding-top: 0.5rem;
}

.staff-profile__name {
  margin-bottom: 0.5em;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--color-text-strong);
  text-align: start;
}

.staff-profile__position {
  margin-bottom: 0.5em;
  color: var(--color-text-subtle);
  text-align: start;
}

.staff-profile__website {
  display: inline-block;
  font-size: 0.9em;
}

.staff-profile__table {
  width: 100%;
  margin-bottom: 1em;
  border-collapse: collapse;
}

.staff-profile__row {
  border: 1px solid var(--color-border);
}

.staff-profile__header {
  width: 6em;
  font-weight: bold;
  background-color: var(--color-table-header-bg);
}

.staff-profile__header, .staff-profile__data {
  padding: 0.5em;
}


@container table-container (max-width: 25rem) {
  .staff-profile__row {
    display: block;
    margin-bottom: 0.5em;
    border: none;
  }

  .staff-profile__header, .staff-profile__data {
    display: block;
    width: 100%;
    padding: 0;
    margin-bottom: 0.25em;
    text-align: left;
    background-color: inherit;
  }

  .staff-profile__data {
    padding-left: 1em;
  }
}

@supports not (container-type: inline-size) {
  @media (max-width: 44rem) {
    .staff-profile__row {
      display: block;
      margin-bottom: 0.5em;
      border: none;
    }

    .staff-profile__header, .staff-profile__data {
      display: block;
      width: 100%;
      padding: 0;
      margin-bottom: 0.25em;
      text-align: left;
      background-color: inherit;
    }

    .staff-profile__data {
      padding-left: 1em;
    }
  }
}

.tutor-table {
  width: 100%;
  margin-bottom: 1rem;
  border-collapse: collapse;
}

.tutor-table__header,
.tutor-table__staff {
  padding: 0.5em;
  border: 1px solid var(--color-border);
}

.tutor-table__header {
  background-color: var(--color-table-header-bg)
}

.tutor-table__staff {
  min-width: 3em;
}

.tutor-table__staff--support {
  color: #d55e00;
}

.tutor-table__staff--chief {
  background-color: #ff9;
}

.research-article-list {
  margin: 1.5rem 0;
}

.research-article {
  display: flex;
  flex-direction: row;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.research-article:first-child {
  border-top: 1px solid var(--color-border);
}

.research-article__photo {
  flex: 0 0 auto;
  max-width: 30vw;
  height: auto;
}

.research-article__detail {
  flex: 1 1 auto;
  min-width: 0;
}

.research-article__title {
  margin: 0 0 0.25rem;
  font-size: 1.2em;
  font-weight: bold;
}

.research-article__subtitle {
  font-weight: bold;
  text-align: start;
}

.research-article__author {
  margin-bottom: 0;
  text-indent: 0;
}

.map-container {
  display: flex;
  flex-direction: row;
  gap: 1rem 2rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.map-container__image {
  width: max(280px, 20rem);
  height: auto;
}

@media (max-width: 56rem) {
  .map-container {
    flex-direction: column;
  }

  .map-container__secondary {
    width: 100%;
  }
}

.text-column {
  max-width: 40rem;
}

.indent {
  text-indent: 1em;
}

.article-author {
  font-weight: bold;
}

.subtitle {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-text-strong);
}

.link-back {
  margin-top: 2rem;
  text-align: right;
}

.new-tab::after {
  display: inline-block;
  width: 0.9em;
  height: 0.9em;
  margin: 0 0.125em;
  vertical-align: middle;
  content: "";
  background-color: currentcolor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M7 3H3v12h12v-4'/%3E%3Cpath d='M9 9L16 2'/%3E%3Cpath d='M11 2h5v5'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M7 3H3v12h12v-4'/%3E%3Cpath d='M9 9L16 2'/%3E%3Cpath d='M11 2h5v5'/%3E%3C/svg%3E");
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-transform: translateY(-0.0625em);
  transform: translateY(-0.0625em);
}

.head-top {
  padding: 0;
  margin: 1.2em 0;
  font-size: 1.2rem;
  color: var(--color-text);
}

.tagline {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--color-heading);
}

.note {
  padding-left: 1em;
  margin: 2em 0;
}

.list-education {
  list-style: none;
}

.no-break {
  white-space: nowrap;
}

.keep-all-break-word {
  word-break: keep-all;
  overflow-wrap: break-word;
  overflow-wrap: anywhere;
}