@charset "UTF-8";

:root {
  color-scheme: light;
  --wine: #9c1a20;
  --ink: #272727;
  --mint: #cbe9e5;
  --teal: #52b6a7;
  --paper: #fff;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.9;
}
/*++++ヘッダー用+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
    
.header_bg {
    background: #EFEFEF;
    box-sizing: border-box;
}
.header_wrap {
    position: relative;
    text-align: center;
    margin: 0 auto;
    width: 100%;
    max-width: 945px;
    padding: 3.535vw 0 3.035vw;
    box-sizing: border-box;
}
.header_logo {
    display: inline-block;
    width: 40.548vw;
}
.header_logo img {
    width: 100%;
}
.header_pr {
    display: inline-block;
    font-size: 0;
    position: absolute;
  top: 50%;
  right: 15px;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  width: 8.585%;
}
.header_pr img {
    width: 100%;
}


@media screen and (min-width: 440px) {
    .header_wrap {
        padding: 12px 0;
    }
    .header_logo {
        width: 199.598px;
    }
    .header_pr {
        width: 40px;
    }
}


@media screen and (min-width: 640px) {
    .header_logo {
        width: 221.950px;
    }
    .header_wrap {
        padding: 16.3px 0 12.79px;
    }
}



/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

img {
  max-width: 100%;
}

a {
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  clip-path: inset(50%);
  border: 0;
}

.hero {
  overflow: hidden;
  background: #fff;
}

.hero-banner {
  background: var(--wine);
}

.hero-banner-inner {
  width: min(1000px, calc(100% - 40px));
  margin: 0 auto;
  box-sizing: border-box;
}

.hero-banner img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-main-inner,
.hero-lead-inner {
  position: relative;
  width: min(950px, calc(100% - 40px));
  margin: 0 auto;
  box-sizing: border-box;
}

.hero-main-inner {
  min-height: 132px;
  padding: 17px 0 20px;
}

.hero-title {
  position: relative;
  z-index: 2;
  margin: 0;
  color: var(--teal);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.32;
}

.hero-lead {
  background: var(--teal);
  color: #fff;
}

.hero-lead-inner {
  min-height: 149px;
  padding: 17px 300px 40px 0;
}

.hero-lead-inner > p {
  max-width: 650px;
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
}

.hero-speaker {
  position: absolute;
  top: -148px;
  right: -28px;
  z-index: 1;
  width: 292px;
  margin: 0;
  color: var(--ink);
}

.hero-speaker img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-speaker figcaption {
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.45;
}

.hero-speaker figcaption h3 {
  font-weight: 700;
  font-size: 18px;
}

.hero-speaker figcaption h3 span {
  color: var(--ink);
  font-size: 11px;
  font-weight: 400;
}

nav.sponsor-nav {
  background: var(--mint);
}

.sponsor-nav-inner {
  width: min(750px, calc(100% - 40px));
  margin: 0 auto;
  padding: 20px 0 30px;
}

.sponsor-nav-heading {
  margin: 0px 0 26px;
  padding: 0 0 5px;
  border-bottom: 3px solid var(--teal);
  color: var(--teal);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}

.sponsor-nav-links {
  display: flex;
  gap: 22px;
}

.sponsor-nav-link {
  position: relative;
  display: flex;
  flex: 1 1 0;
  align-items: center;
  min-width: 0;
  min-height: 80px;
  padding: 4px 38px 0 22px;
  box-sizing: border-box;
  color: #111;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
  transition: transform .2s ease;
}

.sponsor-nav-card {
  position: absolute;
  z-index: 0;
  inset: 0;
  border-radius: 12px;
  background: #fff;
}

.sponsor-nav-link:hover .sponsor-nav-card {
  box-shadow: 0 5px 12px rgb(52 88 82 / 15%);
}

.sponsor-nav-label {
  position: absolute;
  top: -12px;
  left: 0;
  z-index: 2;
  display: grid;
  width: 120px;
  min-height: 30px;
  place-items: center;
  border-radius: 12px;
  background: var(--teal);
  box-shadow: 0 3px 7px rgb(0 0 0 / 22%);
  color: #fff;
  font-size: 15px;
  line-height: 1.2;
}

.sponsor-nav-name {
  position: relative;
  z-index: 1;
}

.sponsor-nav-arrow {
  position: absolute;
  z-index: 1;
  top: 50%;
  right: 18px;
  color: var(--teal);
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
  transform: translateY(-50%);
}

.committee-nav {
  background: #e8c8ca;
}

.committee-nav-inner {
  width: min(750px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 36px;
}

.committee-nav-heading {
  margin: 0 0 12px;
  padding: 0 0 5px;
  border-bottom: 3px solid var(--wine);
  color: var(--wine);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}

.committee-nav-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 22px;
}

.committee-nav-item {
  min-width: 0;
}

.committee-nav-item[open] {
  display: contents;
}

.committee-nav-item[open]::details-content {
  display: contents;
}

.committee-nav-item[open] .committee-nav-description {
  grid-column: 1 / -1;
  margin-top: -4px;
}


.committee-nav-link {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 63px;
  padding: 8px 76px 8px 22px;
  border-radius: 10px;
  background: #fff;
  box-sizing: border-box;
  color: var(--wine);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  list-style: none;
  cursor: pointer;
}

.committee-nav-link::-webkit-details-marker {
  display: none;
}

.committee-nav-link:focus-visible {
  outline: 3px solid #145e54;
  outline-offset: 3px;
}

.committee-nav-item[open] .committee-nav-link {
  border-radius: 10px;
}

.committee-nav-item[open] .committee-nav-arrows {
  transform: translateY(-50%) rotate(90deg);
}

.committee-nav-arrows {
  position: absolute;
  top: 50%;
  right: 13px;
  display: flex;
  align-items: center;
  color: var(--wine);
  line-height: 1;
  transform: translateY(-50%);
}

.committee-nav-arrows span:last-child {
  font-size: 36px;
  font-weight: 700;
}

.committee-nav-description {
  padding: 28px 32px 24px;
  background: #f7eded;
}

.committee-nav-description h3 {
  margin: 0 0 18px;
  padding: 12px 0;
  border-top: 3px solid var(--wine);
  border-bottom: 3px solid var(--wine);
  color: var(--wine);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
}

.committee-nav-description p {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
  text-align: justify;
  word-break: break-word;
}

.sponsor-nav-link:hover {
  transform: translateY(-2px);
}

.sponsor-nav-link:focus-visible {
  outline: 3px solid #145e54;
  outline-offset: 3px;
}

.speakers {
  padding-top: 40px;
}

.section-inner {
  width: min(750px, 100%);
  margin: 0 auto;
}

.speaker-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.speaker {
  min-width: 0;
}

.speaker img {
  display: block;
  width: 100%;
  aspect-ratio: 1.38;
  object-fit: cover;
  object-position: center 35%;
}

.speaker-affiliation {
  margin: 4px 0 0;
  color: var(--ink);
  font-size: 11px;
  line-height: 1.5;
}

.speaker-intro {
  margin: 22px 0 0;
  color: var(--wine);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.9;
}

.speaker h2 {
  margin: 0;
  margin-top: 2px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.speaker h2 span {
  font-size: 11px;
  font-weight: 400;
}

.article-content {
  width: 100%;
  background: #eef8f6;
}

.article-section {
  width: min(750px, calc(100% - 40px));
  margin: 0 auto;
  padding-top: 40px;
  scroll-margin-top: 24px;
}

article.article-content:last-of-type .article-section {
  padding-bottom: 80px;
}

.section-title {
  margin: 0 0 24px;
  padding-left: 12px;
  border-left: 11px solid var(--teal);
  color: var(--teal);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.45;
}

.keynote-feature {
  width: min(750px, 100%);
  margin: 60px auto 0;
}

.keynote-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 31px;
  padding: 6px 3px;
  border-top: 3px solid var(--wine);
  border-bottom: 3px solid var(--wine);
  box-sizing: border-box;
  font-weight: 700;
  line-height: 1.4;
}

.keynote-bar span:first-child {
  color: #009add;
}

.keynote-bar--seminar span:first-child {
  color: #52b6a7;
}

.keynote-bar span + span {
  padding-left: 18px;
  border-left: 1px solid var(--wine);
  color: var(--ink);
}

.keynote-title {
  margin: 15px 0;
  color: var(--wine);
  /* font-size: 19px; */
  font-weight: 700;
  line-height: 1.35;
}

.keynote-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  align-items: start;
  gap: 55px;
}

.keynote-copy {
  margin: 0;
  text-indent: 1em;
  text-align: justify;
}

.keynote-copy > p {
  margin: 0 0 8px;
  text-indent: 1em;
  text-align: justify;
}

.keynote-speaker img {
  display: block;
  width: 100%;
  aspect-ratio: 0.89;
  object-fit: cover;
  object-position: center 35%;
}

.keynote-speaker .keynote-affiliation {
  margin: 6px 0 0;
  font-size: 11px;
  line-height: 1.5;
}

.keynote-speaker h3 {
  margin: 1px 0 0;
  font-size: 18px;
  line-height: 1.5;
}

.keynote-speaker h3 span {
  font-size: 11px;
  font-weight: 400;
}

.keynote-layout {
  margin-bottom: 34px;
}

.article-section p {
  margin: 0 0 8px;
  text-indent: 1em;
  line-height: 1.9;
}

figcaption {
  margin-top: 8px;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
}
figcaption span{
  color: #52b6a7;
}

.site-footer {
  position: relative;
  min-height: 205px;
  padding: 32px 20px 48px;
  background: #fff;
  box-sizing: border-box;
  text-align: center;
}

.site-footer-contact {
  position: absolute;
  top: -15px;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(300px, calc(100% - 40px));
  min-height: 30px;
  transform: translateX(-50%);
  border-radius: 10px;
  background: var(--teal);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
}

.site-footer-logo {
  display: block;
  width: min(200px, 60%);
  margin: 0 auto 10px;
}

.site-footer-logo img {
  display: block;
  width: 100%;
  height: auto;
}

.site-footer-url {
  color: var(--teal);
  font-size: 13px;
  text-decoration: none;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 16px;
  width: min(375px, 100%);
  margin: 26px auto 0;
}

.related-link {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 70px;
  padding: 0 36px 0 16px;
  border: 2px solid;
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  text-align: left;
  text-decoration: none;
  box-sizing: border-box;
  transition: background-color .2s ease;
}

.related-link-home {
  border-color: var(--wine);
}

.related-link-case {
  border-color: var(--teal);
}

.related-link-arrow {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  font-size: 26px;
  line-height: 1;
}

.related-link-home .related-link-arrow {
  color: var(--wine);
}

.related-link-case .related-link-arrow {
  color: var(--teal);
}

.related-link-home:hover {
  background: #fbf1f1;
}

.related-link-case:hover {
  background: #eff9f7;
}

.related-link:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

.photo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 28px;
}

.photo-grid figure {
  min-width: 0;
  margin: 0;
}

.photo-grid img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid #52b6a7;
  box-sizing: border-box;
}

.exhibition-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 22px;
  margin: 36px auto 0;
}

.exhibition-grid figure {
  min-width: 0;
  margin: 0;
}

.exhibition-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 1.6;
  object-fit: cover;
}

.exhibition-pair {
  grid-column: 1 / -1;
}

.exhibition-pair-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}


.collaboration-section {
  padding-top: 54px;
}

a:focus-visible {
  outline: 3px solid #145e54;
  outline-offset: 4px;
}

@media (max-width: 640px) {
  body {
    font-size: 14px;
  }

  .hero-banner-inner,
  .hero-main-inner,
  .hero-lead-inner {
    width: calc(100% - 36px);
  }

  .hero-main-inner {
    min-height: 0;
    padding: 20px 0 22px;
  }

  .hero-title {
    font-size: 25px;
  }

  .hero-lead-inner {
    min-height: 0;
    padding: 18px 0;
  }

  .hero-lead-inner > p {
    font-size: 13px;
  }

  .hero-speaker {
    position: static;
    float: none;
    width: min(39%, 160px);
    margin: 18px auto 0;
  }

  .hero-speaker figcaption {
    font-size: 9px;
    text-align: left;
  }

  .sponsor-nav-inner {
    width: calc(100% - 36px);
    padding: 12px 0 18px;
  }

  .related-links {
    grid-template-columns: 1fr;
    gap: 12px;
    max-width: 320px;
    margin-top: 22px;
  }

  .sponsor-nav-links {
    flex-direction: column;
    gap: 16px;
  }

  .sponsor-nav-link {
    flex: auto;
    min-height: 63px;
    font-size: 15px;
  }

  .committee-nav-inner {
    width: calc(100% - 36px);
    padding: 20px 0 28px;
  }

  .committee-nav-links {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .committee-nav-link {
    min-height: 60px;
    font-size: 15px;
  }

  .committee-nav-description {
    padding: 20px 16px;
  }

  .committee-nav-description h3 {
    font-size: 16px;
  }

  .speakers {
    padding: 32px 14px 34px;
  }

  .speaker-grid {
    gap: 10px;
  }

  .speaker img {
    aspect-ratio: 1.1;
  }

  .speaker-affiliation {
    font-size: 9px;
  }

  .speaker h2 {
    font-size: 14px;
  }

  .speaker-intro {
    margin-top: 18px;
    font-size: 12px;
  }

  .article-content {
    width: 100%;
  }

  .article-section {
    width: calc(100% - 36px);
    padding: 44px 0 38px;
  }

  article.article-content:last-of-type .article-section {
    padding-bottom: 72px;
  }

  .keynote-feature {
    margin-top: 42px;
  }

  .keynote-title {
    font-size: 17px;
  }

  .keynote-layout {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }

  .keynote-speaker {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    grid-template-rows: min-content min-content;
    align-items: start;
    align-content: start;
    column-gap: 16px;
    order: -1;
  }

  .keynote-speaker img {
    grid-row: 1 / span 2;
    width: 120px;
  }

  .keynote-speaker .keynote-affiliation {
    grid-column: 2;
    grid-row: 1;
  }

  .keynote-speaker h3 {
    grid-column: 2;
    grid-row: 2;
  }

  .keynote-copy {
    order: 1;
    font-size: 15px;
  }

  .section-title {
    margin-bottom: 18px;
    padding-left: 11px;
    font-size: 21px;
  }

  .photo-grid {
    gap: 10px;
  }

  .exhibition-grid {
    gap: 14px 10px;
  }

  .exhibition-pair-images {
    gap: 10px;
  }

}

/* ページトップボタン */
.scroll-top {
  position: fixed;
  right: 36px;
  bottom: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  z-index: 9999;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease;
  padding: 0;
}

.scroll-top.show {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top img {
  display: block;
  width: 36px;
  height: 36px;
}

@media screen and (max-width: 960px) {
  .scroll-top img {
    width: 24px;
    height: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
  }
}