/* ========================================
   unified.css
   共通スタイル + ページ固有差分を1ファイルに統合
   - index.html の hero は独自
   - その他ページの hero は .page-hero 系で共通化
   - ボタン / h1 / h2 / h3 / header / nav は共通化
======================================== */

/* ===== Base (from styles.css) ===== */
:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-soft: #eef5fb;
  --text: #17324a;
  --muted: #5b7184;
  --line: #d7e4ef;
  --primary: #123b63;
  --primary-2: #2c7fb8;
  --shadow: 0 14px 36px rgba(18, 59, 99, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(180deg, #fbfdff 0%, var(--bg) 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(215, 228, 239, 0.8);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand-text .sub {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.brand-text .main {
  display: block;
  font-size: 18px;
  font-weight: 800;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
  overflow-x: auto;
  white-space: nowrap;
  flex-wrap: nowrap;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}

.nav a {
  flex: 0 0 auto;
}

.nav a:hover { color: var(--primary); }



.nav::-webkit-scrollbar {
  height: 8px;
}

.nav::-webkit-scrollbar-thumb {
  background: #c4d6e5;
  border-radius: 999px;
}

.menu-toggle{
  display:none;
  width:48px;
  height:48px;
  border:none;
  background:#fff;
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:0;
  cursor:pointer;
  flex-shrink:0;
}

.menu-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--text);
  margin:5px auto;
  transition:.25s ease;
}

section { padding: 40px 0; }

.hero { padding-top: 64px; }

.hero-card,
.project-card,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  overflow: hidden;
}

.hero-copy {
  padding: 54px 48px;
}

.eyebrow,
.section-label {
  display: inline-block;
  margin: 0 0 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(44, 127, 184, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 16px;
}

.hero-points,
.project-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.hero-points li,
.project-points li {
  position: relative;
  padding-left: 22px;
}

.hero-points li::before,
.project-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 24px rgba(18, 59, 99, 0.18);
}

.btn-secondary {
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
}

.btn-english{
  background:#0f5aa0;
  color:#fff;
  box-shadow: 0 10px 24px rgba(18, 59, 99, 0.18);
}

.hero-visual {
  min-height: 100%;
  background: linear-gradient(135deg, #e9f4fb 0%, #d8eaf8 100%);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-head {
  margin-bottom: 20px;
}

.section-head-with-link {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
}

.section-title {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 10px 0 0;
  color: var(--muted);
}

.news-list {
  display: grid;
  gap: 14px;
}

.news-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 18px;
}

.news-item time {
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
}

.news-item h3,
.card-body h3,
.project-copy h2,
.contact-card h3 {
  margin: 0 0 8px;
}

.news-item p,
.card-body p,
.project-copy p,
.contact-card p {
  margin: 0;
  color: var(--muted);
}

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

.content-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(18, 59, 99, 0.12);
}

.card-image-wrap {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e6eef6;
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 20px;
}

.card-date {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
}

.project-card {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  overflow: hidden;
}

.project-image-wrap {
  min-height: 100%;
  background: #e9f2f9;
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-copy {
  padding: 40px;
}

.text-link {
  display: inline-block;
  margin-top: 18px;
  font-weight: 700;
  color: var(--primary);
}

.gallery-scroll {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(260px, 360px);
  gap: 18px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x proximity;
}

.gallery-scroll::-webkit-scrollbar {
  height: 10px;
}

.gallery-scroll::-webkit-scrollbar-thumb {
  background: #c4d6e5;
  border-radius: 999px;
}

.gallery-scroll{
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
}

.gallery-card{
  scroll-snap-align: start;
}

@media (max-width: 760px){
  .gallery-scroll{
    grid-auto-columns: 88%;
    gap: 14px;
    padding-inline: 2px;
  }
}

.gallery-card {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  scroll-snap-align: start;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery-card figcaption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 14px;
}

.contact-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:28px;
}

.contact-card{
  padding:36px;
}

.contact-info-box{
  margin-top:18px;
  padding:18px 20px;
  background:#f4f7fb;
  border:1px solid var(--line);
  border-radius:18px;
}

.contact-info-box strong{
  display:block;
  margin-bottom:6px;
  font-size:15px;
}

.contact-map{
  margin:18px 0 20px;
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line);
  background:#eef3f9;
}

.contact-card-access .btn{
  margin-top: 4px;
}

.contact-card-info p + .contact-info-box{
  margin-top:18px;
}

@media (max-width: 980px) {
  .hero-card,
  .project-card,
  .cards-grid,
  .activity-cards-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 320px;
  }
}

@media (max-width: 760px) {
  .header-inner {
    min-height: 72px;
  }

  .menu-toggle{
    display:block;
    position:relative;
    z-index:1002;
    margin-left:auto;
  }

  .menu-toggle.is-open span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }

  .menu-toggle.is-open span:nth-child(2){
    opacity:0;
  }

  .menu-toggle.is-open span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }

  .nav {
    position:absolute;
    top:72px;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:16px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    border-radius:22px;
    box-shadow:0 18px 42px rgba(18,59,99,.16);
    white-space:normal;
    overflow:visible;
  }

  .nav.is-open{
    display:flex;
  }

  .nav a{
    padding:12px 14px;
    border-radius:14px;
    background:#f7f9fc;
  }

  .nav-english{
    text-align:center;
  }

  .hero-copy,
  .project-copy,
  .contact-card {
    padding: 28px 22px;
  }

  .section-title {
    font-size: 26px;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .gallery-scroll {
    grid-auto-columns: 82%;
  }

  .section-head-with-link {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .cards-grid,
  .activity-cards-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .contact-card-access .btn,
  .contact-actions{
    width:100%;
  }

  .hero-actions .btn,
  .contact-card-access .btn{
    width:100%;
  }
}


/* ===== Header English nav ===== */
.nav-english-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
}


/* ===== Smaller buttons ===== */
.btn-sm{
  padding: 9px 18px;
  min-height: 0;
  font-size: 14px;
}

/* ===== Activity tags ===== */
.card-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin: 0 0 10px;
}

.card-tags span{
  display:inline-flex;
  align-items:center;
  padding:6px 10px;
  border-radius:999px;
  background: var(--surface-soft);
  color: var(--primary);
  border:1px solid var(--line);
  font-size:12px;
  font-weight:700;
  line-height:1;
}

/* ===== Clickable award cards ===== */
.news-link-item{
  color: inherit;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.news-link-item:hover{
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(18, 59, 99, 0.12);
}

/* adjust generic button padding slightly smaller site-wide */
.btn{
  padding: 10px 20px;
}


/* ===== Activity card meta row ===== */
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:8px;
}

.card-date{
  margin-bottom:0;
  flex:0 0 auto;
}

.card-tags{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:6px;
  margin:0;
}

.card-tags .tag{
  display:inline-flex;
  align-items:center;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:11px;
  font-weight:700;
  line-height:1;
  white-space:nowrap;
}

.tag-academic{
  background:#e8f1fb;
  color:#0f4c8a;
}

.tag-event{
  background:#ebf7ee;
  color:#1f7a3e;
}

.tag-welcome{
  background:#f8eefc;
  color:#7a3ea1;
}

.tag-news{
  background:#fff4e8;
  color:#a55a12;
}

@media (max-width: 640px){
  .card-meta{
    align-items:flex-start;
    flex-direction:column;
  }

  .card-tags{
    justify-content:flex-start;
  }
}


/* ===== Tag size/color fix ===== */
.card-tags .tag{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:6px 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:800;
  line-height:1.1;
  border:1px solid transparent;
}

.card-tags .tag-academic{
  background:#e7f0ff;
  color:#0f4c8a;
  border-color:#bfd5f6;
}

.card-tags .tag-award{
  background:#fff1e6;
  color:#b85a00;
  border-color:#ffd2ad;
}

.card-tags .tag-event{
  background:#e9f8ee;
  color:#1f7a3e;
  border-color:#bfe8cb;
}

.card-tags .tag-project{
  background:#efe9ff;
  color:#5b39a8;
  border-color:#d7c9ff;
}

.card-tags .tag-news{
  background:#eef3f7;
  color:#516678;
  border-color:#d6e0e8;
}


/* ===== English nav flag image ===== */
.nav-flag{
  width: 22px;
  height: 14px;
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid rgba(0,0,0,0.08);
  flex: 0 0 auto;
}


/* auto-render compatibility additions */
#latest-activities .content-card{
  color: inherit;
  text-decoration: none;
}

#latest-awards .news-item{
  color: inherit;
  text-decoration: none;
}


.gallery-scroll.is-dragging {
  cursor: grabbing;
}

.lightbox-trigger {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(9, 24, 44, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 9999;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: min(1100px, 92vw);
  max-height: 88vh;
  border-radius: 16px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 999px;
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 28px;
  cursor: pointer;
}
.site-footer { padding: 28px 0 42px; color: var(--muted); font-size: .92rem; }

/* ===== Shared UI additions (from site-ui.css, deduplicated into one place) ===== */
/* ===== Shared site UI enhancements ===== */
.nav{
  overflow-x:auto;
  white-space:nowrap;
  -webkit-overflow-scrolling:touch;
}
.nav a{flex:0 0 auto;}
.nav-english-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.nav-flag{
  width:18px;
  height:18px;
  border-radius:50%;
  object-fit:cover;
  flex:0 0 auto;
}
.menu-toggle{
  display:none;
  width:48px;
  height:48px;
  border:none;
  background:#fff;
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:0;
  cursor:pointer;
  flex-shrink:0;
  margin-left:auto;
}
.menu-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--text);
  margin:5px auto;
  transition:.25s ease;
}
@media (max-width:760px){
  .header-inner{
    align-items:center !important;
    padding:14px 0;
    flex-direction:row !important;
    flex-wrap:wrap;
    position:relative;
  }
  .brand{
    min-width:0;
    max-width:calc(100% - 64px);
  }
  .menu-toggle{
    display:block;
    position:relative;
    z-index:1002;
  }
  .menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .menu-toggle.is-open span:nth-child(2){opacity:0;}
  .menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .nav{
    position:absolute;
    top:calc(100% + 8px);
    left:0;
    right:0;
    display:none !important;
    flex-direction:column;
    align-items:stretch;
    gap:8px !important;
    padding:16px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    border-radius:22px;
    box-shadow:0 18px 42px rgba(18,59,99,.16);
    white-space:normal;
    overflow:visible;
    z-index:1001;
  }
  .nav.is-open{display:flex !important;}
  .nav a{
    padding:12px 14px;
    border-radius:14px;
    background:#f7f9fc;
  }
}
.nav a.is-current,
.nav a.is-active{
  color:var(--primary);
  font-weight:700;
}
/* Publication tools */
.bibtex-toolbar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  margin:0 0 20px;
  padding:16px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
}
.bibtex-toolbar-copy{font-size:14px;color:var(--muted);}
.bibtex-actions,.publication-links{display:flex;flex-wrap:wrap;gap:10px;}
.bibtex-btn,.bibtex-download-btn,.bibtex-copy-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface-soft);
  color:var(--primary);
  font-weight:700;
  cursor:pointer;
}
.bibtex-btn:hover,.bibtex-download-btn:hover,.bibtex-copy-btn:hover{filter:brightness(.98);}
.bibtex-modal{
  position:fixed;
  inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
  background:rgba(9,23,39,.48);
  z-index:2000;
}
.bibtex-modal.is-open{display:flex;}
.bibtex-dialog{
  width:min(780px,100%);
  max-height:85vh;
  overflow:auto;
  background:#fff;
  border-radius:22px;
  border:1px solid var(--line);
  box-shadow:0 24px 56px rgba(18,59,99,.24);
  padding:22px;
}
.bibtex-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.bibtex-dialog-head h3{margin:0;font-size:20px;}
.bibtex-close{
  border:none;
  background:#f5f8fc;
  color:var(--text);
  width:40px;height:40px;border-radius:999px;cursor:pointer;font-size:22px;
}
.bibtex-code{
  margin:0;
  padding:16px;
  border-radius:16px;
  background:#0f2235;
  color:#eef5fb;
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  font-size:13px;
  line-height:1.6;
  white-space:pre-wrap;
  overflow-wrap:anywhere;
}
.bibtex-meta{margin:0 0 12px;color:var(--muted);font-size:14px;}
.bibtex-dialog-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
@media (max-width:760px){
  .bibtex-toolbar{align-items:flex-start;}
  .bibtex-dialog{padding:18px;}
}
.site-footer { padding: 28px 0 42px; color: var(--muted); font-size: .92rem; }


/* ===== Page hero image (non-index pages) ===== */
.page-hero-visual img{
  width:100%;
  height:420px;           /* fixed vertical height */
  aspect-ratio:16/9;
  object-fit:cover;
  display:block;
}

/* ===== Shared page hero (all non-index pages) ===== */
.page-hero {
  padding: 56px 0 36px;
}

.page-hero-card {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-hero-copy {
  padding: 44px 42px;
}

.page-hero-copy h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
}

.page-hero-copy p {
  margin: 0;
  color: var(--muted);
}

.page-hero-visual {
  background: linear-gradient(135deg, #e9f4fb 0%, #d8eaf8 100%);
  min-height: 100%;
}

.page-hero-visual img {
  width: 100%;
  height: 420px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.member-nav,
.year-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.member-nav a,
.year-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.member-nav a:hover,
.year-nav a:hover {
  transform: translateY(-2px);
  background: var(--surface-soft);
}

.member-nav .alumni-link {
  background: var(--primary);
  color: #f4f5f8;
}

.member-nav .alumni-link:hover{
  background:#4b8dc0;
}
.alt-bg {
  background: rgba(238, 245, 251, 0.5);
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  margin: 0;
}

.card-tags .tag,
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.1;
  border: 1px solid transparent;
  white-space: nowrap;
}

.tag-academic { background:#e7f0ff; color:#0f4c8a; border-color:#bfd5f6; }
.tag-award { background:#fff1e6; color:#b85a00; border-color:#ffd2ad; }
.tag-event { background:#e9f8ee; color:#1f7a3e; border-color:#bfe8cb; }
.tag-project { background:#efe9ff; color:#5b39a8; border-color:#d7c9ff; }
.tag-news { background:#eef3f7; color:#516678; border-color:#d6e0e8; }

@media (max-width: 980px) {
  .page-hero-card {
    grid-template-columns: 1fr;
  }

  .page-hero-visual {
    min-height: 300px;
  }
}

@media (max-width: 640px) {
  .member-nav,
  .year-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-tags {
    justify-content: flex-start;
  }
}

/* ===== Members / Alumni ===== */
.members-section {
  padding-top: 16px;
  padding-bottom: 48px;
}

.alt-bg {
  background: rgba(238, 245, 251, 0.5);
}

.member-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.faculty-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.member-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.member-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(18, 59, 99, 0.12);
}

.member-photo-wrap {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e6eef6;
}

.member-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.member-body {
  padding: 20px;
}

.member-body h3 {
  margin: 0 0 6px;
  font-size: 22px;
  line-height: 1.35;
}

.member-role {
  margin: 0 0 8px;
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
}

.member-theme {
  margin: 0 0 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 15px;
}

.member-desc {
  margin: 0;
  color: var(--muted);
}

.text-link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 700;
  color: var(--primary);
}

.alumni-box {
  margin-top: 28px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  background: var(--primary);
  color: #fff;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(18, 59, 99, 0.18);
}


/* ===== visual upgrades ===== */

/* 教員3列・学生4列 */
.faculty-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.member-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* 写真を丸型に近い見せ方へ */
.member-photo-wrap {
  aspect-ratio: auto;
  background: linear-gradient(180deg, #edf4fb 0%, #dfeaf5 100%);
  padding: 26px 26px 10px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.member-photo {
  width: min(170px, 100%);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  border: 6px solid rgba(255,255,255,0.96);
  box-shadow: 0 12px 28px rgba(18, 59, 99, 0.14);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.member-card:hover .member-photo {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 18px 34px rgba(18, 59, 99, 0.18);
}

/* タグ */
.member-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.member-tags span {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
}

/* 教員アイコンリンク */
.faculty-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.icon-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 24px rgba(18, 59, 99, 0.16);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.icon-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(18, 59, 99, 0.22);
  background: var(--primary-2);
}

@media (max-width: 980px) {
  .page-hero-card,
  .member-grid,
  .faculty-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-hero-visual {
    min-height: 300px;
  }
}

@media (max-width: 760px) {
  .header-inner {
    align-items: flex-start;
    padding: 14px 0;
    flex-direction: column;
  }

  .nav {
    gap: 12px;
  }

  .page-hero-copy {
    padding: 28px 22px;
  }

  .section-title {
    font-size: 26px;
  }

  .alumni-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .member-grid,
  .faculty-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .member-grid,
  .faculty-grid {
    grid-template-columns: 1fr;
  }

  .member-nav {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Alumni-specific components ===== */
.alumni-year-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 30px;
}

.alumni-year-meta {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 20px;
}

.year-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 76px;
  height: 76px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 800;
  box-shadow: 0 14px 28px rgba(18, 59, 99, 0.16);
}

.alumni-year-meta h3 {
  margin: 0 0 8px;
  font-size: 1.45rem;
  line-height: 1.35;
}

.alumni-year-meta p {
  margin: 0;
  color: var(--muted);
}

.employment-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 14px;
}

.employment-tags span {
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
}

.company-text {
  margin: 0 0 24px;
  padding: 16px 18px;
  background: linear-gradient(180deg, #fbfdff 0%, #f3f8fc 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: var(--muted);
  font-weight: 600;
}

.group-photo-card {
  margin-bottom: 20px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: #e6eef6;
}

.group-photo {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.alumni-list-head {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 18px;
}

/* ===== Current Members Section on alumni page ===== */
.current-members-card{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:40px;
  padding:36px 40px;
  border-radius:var(--radius-xl);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}

.current-members-left{
  flex:1 1 auto;
  max-width:760px;
}

.current-members-right{
  flex:0 0 auto;
  margin-left:auto;
}

.current-members-left .section-label{
  margin-bottom:18px;
}

.current-members-left .section-title{
  margin-bottom:14px;
}

.current-members-left .section-desc{
  margin-top:0;
}

.current-members-btn{
  min-width:260px;
  min-height:76px;
  padding:0 34px;
  border-radius:999px;
  background:#173f6d;
  color:#fff;
  font-size:18px;
  font-weight:800;
  box-shadow:0 12px 28px rgba(18, 59, 99, 0.18);
}

.current-members-btn:hover{
  background:#275a88;
}

@media (max-width: 760px) {
  .alumni-year-meta {
    flex-direction: column;
  }

  .alumni-list-head {
    justify-content: flex-start;
  }

  .current-members-card{
    flex-direction:column;
    align-items:flex-start;
    gap:24px;
    padding:28px 22px;
  }

  .current-members-right{
    width:100%;
    margin-left:0;
  }

  .current-members-btn{
    width:100%;
    min-width:0;
  }
}

/* ===== Publications ===== */
.publication-nav-section{
  padding-top: 8px;
  padding-bottom: 16px;
}

.member-nav{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.member-nav a{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.member-nav a:hover{
  transform: translateY(-2px);
  background: var(--surface-soft);
}

.publication-section{
  padding-top: 28px;
  padding-bottom: 36px;
}

.publication-list{
  display: grid;
  gap: 18px;
}

.publication-item{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 26px 28px;
}

.publication-item.placeholder{
  background: linear-gradient(180deg, #fbfdff 0%, #f4f8fc 100%);
}

.publication-meta{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.publication-type,
.publication-year{
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(44, 127, 184, 0.10);
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
}

.publication-item h3{
  margin: 0 0 8px;
  line-height: 1.4;
}

.publication-authors{
  margin: 0 0 8px;
  color: var(--text);
  font-weight: 400;
}

.publication-journal{
  margin: 0 0 8px;
  color: var(--muted);
  font-style: italic;
}

.journal-name{
  color: var(--text);
}

.journal-vol,
.journal-issue,
.journal-pages,
.journal-sep{
  color: var(--muted);
}

.publication-note{
  margin: 0;
  color: var(--muted);
}

.publication-links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.topic-link-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: 0 8px 18px rgba(18, 59, 99, 0.14);
}

.topic-link-btn:hover{
  transform: translateY(-2px);
  background: var(--primary-2);
}

@media (max-width: 980px){
  .publication-hero-card{
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px){
  .member-nav{
    flex-direction: column;
    align-items: flex-start;
  }

  .publication-item{
    padding: 20px;
  }
}


/* =========================
   Maintainability note
   - ページ固有CSSでは、レイアウト・余白・色など差分のみ定義
   - h1/h2/h3 の文字サイズは共通 style.css 側を優先
   - このファイルでは各ページ特有の構造だけを調整
========================= */

/* ===== Research ===== */
.research-hero-card{
  grid-template-columns: 1fr 1fr;
}

.research-cards-grid{
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px 32px;
}

.research-topic-card{
  border-radius: var(--radius-xl);
}

.topic-chip{
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(44, 127, 184, 0.10);
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 18px;
}

.research-topic-card .card-body{
  padding: 28px 26px 30px;
}

.research-topic-card h3{
  line-height: 1.35;
  margin-bottom: 14px;
}

.research-topic-card p{
  font-size: 15px;
  line-height: 1.9;
}

.student-research-section{
  padding-bottom: 72px;
}

.year-nav-wrap{
  margin-bottom: 28px;
}

.member-nav{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.member-nav a{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.member-nav a:hover{
  transform: translateY(-2px);
  background: var(--surface-soft);
}

.research-year-block{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-bottom: 28px;
}

.research-year-block.alt-card{
  background: linear-gradient(180deg, #fbfdff 0%, #f4f8fc 100%);
}

.year-heading{
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.year-badge{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 76px;
  height: 76px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 800;
  box-shadow: 0 14px 28px rgba(18, 59, 99, 0.16);
}

.year-heading h3{
  margin: 0 0 4px;
  font-size: 26px;
  line-height: 1.25;
}

.year-heading p{
  margin: 0;
  color: var(--muted);
}

.research-table-wrap{
  overflow-x: auto;
}

.research-table{
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.research-table thead th{
  text-align: left;
  background: var(--surface-soft);
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.research-table tbody td{
  padding: 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  background: #fff;
  font-size: 15px;
}

.research-table tbody tr:last-child td{
  border-bottom: none;
}

.research-table tbody td:first-child{
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.research-table tbody td:nth-child(2){
  white-space: nowrap;
  font-weight: 700;
}

.research-table a{
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.research-table a:hover{
  color: var(--primary-2);
}

@media (max-width: 980px){
  .research-cards-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .research-hero-card{
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px){
  .research-cards-grid{
    grid-template-columns: 1fr;
  }

  .research-year-block{
    padding: 20px;
  }

  .year-heading{
    flex-direction: column;
    gap: 12px;
  }

  .member-nav{
    flex-direction: column;
    align-items: flex-start;
  }
}


/* Research page updates */
.research-hero-card .hero-copy {
  padding-top: 36px;
  padding-bottom: 36px;
}

.research-hero-card .hero-visual {
  min-height: 320px;
}

.research-hero-card .lead {
  margin-bottom: 0;
}

.topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.topic-link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--primary);
  color: #ffffff;
  font-size: 10px;
  font-weight: 700;
  text-decoration: none !important;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: 0 8px 18px rgba(18, 59, 99, 0.14);
}

.topic-link-btn:hover {
  transform: translateY(-2px);
  background: var(--primary-2);
}

.topic-link-secondary {
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
  box-shadow: none;
}

.topic-link-secondary:hover {
  background: #dfeaf5;
}

.research-table tbody tr:first-child td {
  border-top: 1px solid var(--line);
}

@media (max-width: 980px){
  .research-hero-card .hero-visual {
    min-height: 240px;
  }
}


/* =========================
   Maintainability note
   - ページ固有CSSでは、レイアウト・余白・色など差分のみ定義
   - h1/h2/h3 の文字サイズは共通 style.css 側を優先
   - このファイルでは各ページ特有の構造だけを調整
========================= */

/* ===== Access ===== */
.access-nav-section{
  padding-top: 8px;
  padding-bottom: 16px;
}

.member-nav{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.member-nav a{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.member-nav a:hover{
  transform: translateY(-2px);
  background: var(--surface-soft);
}

.access-section{
  padding-top: 28px;
  padding-bottom: 40px;
}

.access-grid{
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
  align-items: start;
}

.access-card,
.mini-access-card,
.route-card,
.access-note-card,
.contact-card{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.access-card{
  overflow: hidden;
}

.access-image-wrap{
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #e6eef6;
}

.access-image{
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #f3f6fa;
}

.access-card-body{
  padding: 24px 24px 26px;
}

.access-card-body h3,
.mini-access-card h3,
.route-body h3,
.access-note-card h3{
  margin: 0 0 10px;
}

.access-address{
  margin: 0 0 10px;
  color: var(--primary);
  font-weight: 700;
}

.access-card-body p,
.mini-access-card p,
.route-body p,
.access-note-card p{
  margin: 0;
  color: var(--muted);
}

.access-links,
.contact-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.topic-link-btn,
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: 0 8px 18px rgba(18, 59, 99, 0.14);
}

.topic-link-btn:hover,
.btn:hover{
  transform: translateY(-2px);
  background: var(--primary-2);
}

.topic-link-secondary{
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
  box-shadow: none;
}

.topic-link-secondary:hover{
  background: #dfeaf5;
}

.access-outline-btn{
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
  box-shadow: none;
}

.access-info-stack{
  display: grid;
  gap: 16px;
}

.mini-access-card{
  padding: 22px;
}

.topic-chip{
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(44, 127, 184, 0.10);
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 14px;
}

.lab-route-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.route-card{
  overflow: hidden;
}

.route-image-wrap{
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e6eef6;
}

.access-image-wrap,
.route-image-wrap{
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f3f6fa;
}

.route-image{
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #f3f6fa;
}

.route-body{
  padding: 22px;
}

.access-note-card{
  padding: 26px;
}

.contact-card{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 28px 30px;
}

@media (max-width: 980px){
  .access-hero-card,
  .access-grid,
  .lab-route-grid,
  .contact-card{
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px){
  .member-nav{
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-actions{
    width: 100%;
  }

  .contact-actions .btn{
    width: 100%;
  }
}
/* Lightbox (Access page only) */
.lightbox-img{
  cursor: zoom-in;
}

#access-lightbox{
  position: fixed;
  inset:0;
  background: rgba(0,0,0,0.85);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:9999;
}

#access-lightbox img{
  max-width:90%;
  max-height:90%;
  border-radius:10px;
}

#access-lightbox-close{
  position:absolute;
  top:30px;
  right:40px;
  font-size:42px;
  color:#fff;
  cursor:pointer;
}

/* ===== Activities ===== */
.activities-year-section { padding-top:16px; padding-bottom:48px; }
.alt-bg { background:rgba(238,245,251,.5); }
.activity-cards-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; }
.activity-card-link { display:block; color:inherit; text-decoration:none; }
.activity-card {
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-lg); overflow:hidden;
  box-shadow:var(--shadow); transition: transform .18s ease, box-shadow .18s ease;
}
.activity-card-link:hover .activity-card { transform:translateY(-4px); box-shadow:0 18px 36px rgba(18,59,99,.12); }
.card-image-wrap { aspect-ratio:16/10; overflow:hidden; background:#e6eef6; }
.card-image { width:100%; height:100%; object-fit:cover; }
.card-body { padding:20px; }
.card-meta { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:8px; }
.card-date { color:var(--primary); font-weight:800; font-size:14px; }
.card-tags { display:flex; flex-wrap:wrap; justify-content:flex-end; gap:6px; }
.card-tags .tag {
  display:inline-flex; align-items:center; justify-content:center; padding:6px 11px; border-radius:999px;
  font-size:12px; font-weight:800; line-height:1.1; border:1px solid transparent; white-space:nowrap;
}
.tag-academic { background:#e7f0ff; color:#0f4c8a; border-color:#bfd5f6; }
.tag-award { background:#fff1e6; color:#b85a00; border-color:#ffd2ad; }
.tag-event { background:#e9f8ee; color:#1f7a3e; border-color:#bfe8cb; }
.tag-project { background:#efe9ff; color:#5b39a8; border-color:#d7c9ff; }
.tag-news { background:#eef3f7; color:#516678; border-color:#d6e0e8; }
@media (max-width:980px) {
  .page-hero-card, .activity-cards-grid { grid-template-columns:1fr; }
  .page-hero-visual { min-height:300px; }
}
@media (max-width:640px) {
  .header-inner { align-items:flex-start; padding:14px 0; flex-direction:column; }
  .year-nav { flex-direction:column; align-items:flex-start; }
  .card-meta { flex-direction:column; align-items:flex-start; }
  .card-tags { justify-content:flex-start; }
}

/* ===== Awards ===== */
.awards-year-section{padding-top:16px;padding-bottom:48px}
.alt-bg{background:rgba(238,245,251,.5)}
.award-cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.award-card-link{display:block;color:inherit;text-decoration:none}
.award-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:transform .18s ease, box-shadow .18s ease}
.award-card-link:hover .award-card{transform:translateY(-4px);box-shadow:0 18px 36px rgba(18,59,99,.12)}
.card-image-wrap{aspect-ratio:16/10;overflow:hidden;background:#e6eef6}
.card-image{width:100%;height:100%;object-fit:cover}
.card-body{padding:20px}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.card-date{color:var(--primary);font-weight:800;font-size:14px}
.card-tags{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px}
.card-tags .tag{display:inline-flex;align-items:center;justify-content:center;padding:6px 11px;border-radius:999px;font-size:12px;font-weight:800;line-height:1.1;border:1px solid transparent;white-space:nowrap}
.tag-academic{background:#e7f0ff;color:#0f4c8a;border-color:#bfd5f6}
.tag-award{background:#fff1e6;color:#b85a00;border-color:#ffd2ad}
.tag-event{background:#e9f8ee;color:#1f7a3e;border-color:#bfe8cb}
.tag-project{background:#efe9ff;color:#5b39a8;border-color:#d7c9ff}
.tag-news{background:#eef3f7;color:#516678;border-color:#d6e0e8}
@media (max-width:980px){.page-hero-card,.award-cards-grid{grid-template-columns:1fr}.page-hero-visual{min-height:300px}}
@media (max-width:640px){.header-inner{align-items:flex-start;padding:14px 0;flex-direction:column}.year-nav{flex-direction:column;align-items:flex-start}.card-meta{flex-direction:column;align-items:flex-start}.card-tags{justify-content:flex-start}}

/* ===== Activity detail ===== */
.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.card-date {
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.1;
  border: 1px solid transparent;
  white-space: nowrap;
}

.tag-event {
  background: #e9f8ee;
  color: #1f7a3e;
  border-color: #bfe8cb;
}

.tag-project {
  background: #efe9ff;
  color: #5b39a8;
  border-color: #d7c9ff;
}

.page-hero-copy p {
  margin: 0;
  color: var(--muted);
}

.hero-actions {
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-secondary {
  background: var(--surface-soft);
  color: var(--primary);
  border: 1px solid var(--line);
}

.page-hero-visual {
  background: linear-gradient(135deg, #e9f4fb 0%, #d8eaf8 100%);
}

.page-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-section,
.gallery-section {
  padding: 16px 0 48px;
}

.article-card,
.gallery-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.article-card {
  padding: 32px;
}

.article-card p {
  margin: 0 0 18px;
  color: var(--text);
}

.quote-box {
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fbfdff 0%, #f3f8fc 100%);
  border: 1px solid var(--line);
}

.quote-box strong {
  display: block;
  margin-bottom: 8px;
}

.quote-box ul {
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
}

.section-head {
  margin-bottom: 20px;
}

.section-title {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 10px 0 0;
  color: var(--muted);
}

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

.gallery-card {
  display: block;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(18, 59, 99, 0.12);
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery-caption {
  padding: 14px 16px 16px;
  color: var(--muted);
  font-size: 14px;
}

.lightbox-trigger {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(9, 24, 44, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 9999;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: min(1100px, 92vw);
  max-height: 88vh;
  border-radius: 16px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 999px;
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 28px;
  cursor: pointer;
}

@media (max-width: 980px) {
  .page-hero-card,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .page-hero-visual {
    min-height: 300px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    align-items: flex-start;
    padding: 14px 0;
    flex-direction: column;
  }

  .nav {
    gap: 12px;
  }

  .page-hero-copy,
  .article-card {
    padding: 26px 22px;
  }

  .meta-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-tags {
    justify-content: flex-start;
  }

  .section-title {
    font-size: 26px;
  }
}


.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}


@media (max-width: 760px) {
  .header-inner { min-height: 72px; }
  .menu-toggle { display:block; position:relative; z-index:1002; margin-left:auto; }
  .menu-toggle.is-open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
  .menu-toggle.is-open span:nth-child(2){ opacity:0; }
  .menu-toggle.is-open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }
  .nav { position:absolute; top:72px; left:0; right:0; display:none; flex-direction:column; align-items:stretch; gap:8px; padding:16px; background:rgba(255,255,255,.98); border:1px solid var(--line); border-radius:22px; box-shadow:0 18px 42px rgba(18,59,99,.16); white-space:normal; overflow:visible; }
  .nav.is-open { display:flex; }
  .nav a { padding:12px 14px; border-radius:14px; background:#f7f9fc; }
  .gallery-grid { display:grid; grid-auto-flow:column; grid-auto-columns:82%; overflow-x:auto; gap:16px; scroll-snap-type:x proximity; -webkit-overflow-scrolling:touch; }
  .gallery-card { scroll-snap-align:start; }
}


/* ===== Media page ===== */

.media-nav-section{padding-top:8px;padding-bottom:16px;}
.media-section{padding-top:28px;padding-bottom:36px;}
.media-feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.media-feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;}
.media-feature-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(18,59,99,.12);}
.media-feature-image-wrap{aspect-ratio:16/10;overflow:hidden;background:#e6eef6;}
.media-feature-image{width:100%;height:100%;object-fit:cover;}
.media-feature-body{padding:22px;}
.media-feature-body h3{margin:0 0 10px;line-height:1.4;}
.media-feature-body p{margin:0;color:var(--muted);}
.media-list{display:grid;gap:18px;}
.media-item{display:grid;grid-template-columns:140px 1fr;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:24px 26px;}
.media-item-date{color:var(--primary);font-size:15px;font-weight:800;white-space:nowrap;}
.media-item-body h3{margin:0 0 8px;line-height:1.45;}
.media-item-body p{margin:0;color:var(--muted);}
@media (max-width:980px){.media-feature-grid{grid-template-columns:1fr 1fr;}.media-item{grid-template-columns:1fr;}}
@media (max-width:640px){.media-feature-grid{grid-template-columns:1fr;}.media-item{padding:20px;}}


/* ===== Members grid fix ===== */
.member-grid.faculty-grid{
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 980px) {
  .member-grid.faculty-grid{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .member-grid.faculty-grid{
    grid-template-columns: 1fr;
  }
}

/* ===== Stable index fixes ===== */
.btn-english{
  background:#356f9f;
  color:#fff;
  box-shadow:0 10px 24px rgba(47,111,79,0.22);
}

.btn-english:hover{
  background:#4b8dc0;
}

.contact-section .contact-grid{
  align-items:stretch;
}

.contact-section .contact-card{
  display:block;
}

.contact-section .contact-card-access{
  display:flex;
  flex-direction:column;
  justify-content:flex-start;
}

.contact-section .contact-card-access .btn{
  align-self:flex-start;
}

.contact-section .contact-map{
  margin-top:0px;
  margin-bottom:0;
  width:100%;
}

.contact-section .contact-map iframe{
  display:block;
  width:100%;
}

.site-footer{
  padding:28px 0 42px;
  color:var(--muted);
  font-size:.92rem;
  border-top:1px solid var(--line);
  margin-top:20px;
  background:rgba(255,255,255,0.72);
}

.site-footer .container{
  text-align:center;
}

@media (max-width:640px){
  .contact-section .contact-card-access .btn{
    align-self:stretch;
  }
}

/* 2) hero：スマホで縦長すぎないように調整 */
@media (max-width: 760px){
  .hero-card{
    grid-template-columns: 1fr;
  }

  .hero-visual{
    min-height: 220px;
  }

  .hero-copy{
    padding: 28px 22px;
  }

  .hero h1{
    font-size: clamp(28px, 8vw, 40px);
    line-height: 1.2;
  }

  .hero-actions .btn{
    width: 100%;
  }
}

/* ===== Shared premium carousel UI ===== */
.shared-carousel {
  position: relative;
}

.shared-carousel-viewport {
  overflow: hidden;
  border-radius: 24px;
}

.shared-carousel-track {
  display: grid;
  grid-auto-flow: column;
  gap: 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}

.shared-carousel-track::-webkit-scrollbar {
  display: none;
}

.shared-carousel-slide {
  scroll-snap-align: start;
  min-width: 0;
}

.shared-carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(255,255,255,0.78);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--primary);
  box-shadow: 0 18px 36px rgba(18, 59, 99, 0.16);
  backdrop-filter: blur(8px);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.shared-carousel-arrow:hover {
  transform: translateY(-50%) scale(1.03);
  box-shadow: 0 22px 42px rgba(18, 59, 99, 0.22);
}

.shared-carousel-arrow.is-prev {
  left: 16px;
}

.shared-carousel-arrow.is-next {
  right: 16px;
}

.shared-carousel-arrow[disabled] {
  opacity: 0.45;
  cursor: default;
  transform: translateY(-50%);
}

.shared-carousel-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 9px;
  margin-top: 16px;
}

.shared-carousel-dot {
  width: 9px;
  height: 9px;
  border: none;
  border-radius: 999px;
  padding: 0;
  background: #c9d8e6;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, width 0.18s ease;
}

.shared-carousel-dot.is-active {
  width: 28px;
  background: var(--primary);
}

.shared-carousel-dot:hover {
  transform: scale(1.08);
}

@media (max-width: 760px) {
  .shared-carousel-arrow {
    width: 44px;
    height: 44px;
    font-size: 24px;
  }

  .shared-carousel-arrow.is-prev {
    left: 8px;
  }

  .shared-carousel-arrow.is-next {
    right: 8px;
  }

  .shared-carousel-dots {
    gap: 8px;
    margin-top: 14px;
  }

  .shared-carousel-dot {
    width: 8px;
    height: 8px;
  }

  .shared-carousel-dot.is-active {
    width: 22px;
  }
}

/* ========================================
   activitydetails.css
   年度別活動詳細ページ専用スタイル
======================================== */

.activity-year-hero {
  padding-bottom: 20px;
}

.activity-jump-section {
  padding-top: 8;
  padding-bottom: 40px;
}

.activity-jump-nav {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  padding-bottom: 6px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.activity-jump-nav::-webkit-scrollbar {
  height: 8px;
}

.activity-jump-nav::-webkit-scrollbar-thumb {
  background: rgba(18, 59, 99, 0.18);
  border-radius: 999px;
}

.activity-jump-nav a {
  flex: 0 0 auto;
  position: relative;
}

.activity-details-section {
  padding-top: 0;
}

.activity-details-list {
  display: grid;
  gap: 42px;
}

.scroll-offset-target {
  scroll-margin-top: 112px;
}

.activity-detail-card {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(247,250,253,0.98) 100%);
  border: 1px solid rgba(215, 228, 239, 0.95);
  border-radius: 32px;
  box-shadow: 0 24px 60px rgba(18, 59, 99, 0.10);
  overflow: hidden;
}

.activity-detail-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-2) 100%);
}

.activity-detail-hero {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(380px, 1.02fr);
  gap: 0;
}

.activity-detail-copy {
  padding: 38px 42px 30px;
}

.activity-detail-copy h2 {
  margin: 0 0 14px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.activity-detail-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.activity-detail-summary {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.activity-detail-visual {
  position: relative;
  min-height: 100%;
  background: linear-gradient(135deg, #edf6fd 0%, #dfeffc 100%);
}

.activity-detail-visual img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  max-height: 360px;
  object-fit: cover;
  display: block;
}

.activity-detail-body {
  padding: 8px 42px 6px;
}

.detail-richtext > *:first-child {
  margin-top: 0;
}

.detail-richtext > *:last-child {
  margin-bottom: 0;
}

.detail-richtext p,
.detail-richtext ul,
.detail-richtext ol,
.detail-richtext blockquote {
  margin: 0 0 18px;
}

.detail-richtext h3,
.detail-richtext h4 {
  margin: 28px 0 12px;
  line-height: 1.35;
}

.detail-richtext img {
  width: 100%;
  border-radius: 20px;
  border: 1px solid var(--line);
}

.activity-detail-divider {
  height: 1px;
  margin: 0 42px;
  background: linear-gradient(90deg, transparent 0%, rgba(215, 228, 239, 0.9) 12%, rgba(215, 228, 239, 0.9) 88%, transparent 100%);
}

.activity-detail-gallery {
  padding: 26px 42px 36px;
}

.gallery-frame {
  position: relative;
}

.gallery-viewport {
  overflow: hidden;
  border-radius: 28px;
}

.gallery-track {
  grid-auto-columns: calc((100% - 44px) / 3);
}

.gallery-slide {
  min-width: 0;
}

.gallery-card {
  display: block;
  overflow: hidden;
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 18px 40px rgba(18, 59, 99, 0.12);
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.gallery-caption {
  padding: 14px 18px 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  background: rgba(255,255,255,0.98);
}

.lightbox {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(8, 18, 30, 0.86);
  backdrop-filter: blur(4px);
  z-index: 1000;
  padding: 24px;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: min(1100px, calc(100vw - 120px));
  max-height: calc(100vh - 120px);
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.32);
}

.lightbox-close {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--primary);
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
}

.lightbox-prev {
  position: absolute;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.03em;
}

body.lightbox-open {
  overflow: hidden;
}

@media (max-width: 1100px) {
  .gallery-track {
    grid-auto-columns: calc((100% - 22px) / 2);
  }
}

@media (max-width: 980px) {
  .activity-detail-hero {
    grid-template-columns: 1fr;
  }

  .activity-detail-visual img {
    min-height: 320px;
    max-height: 320px;
  }

  .gallery-track {
    grid-auto-columns: minmax(0, 88%);
  }
}

@media (max-width: 760px) {
  .activity-details-list {
    gap: 30px;
  }

  .activity-detail-copy,
  .activity-detail-body,
  .activity-detail-gallery {
    padding-left: 22px;
    padding-right: 22px;
  }

  .activity-detail-copy {
    padding-top: 28px;
    padding-bottom: 24px;
  }

  .activity-detail-body {
    padding-top: 0;
  }

  .activity-detail-gallery {
    padding-top: 22px;
    padding-bottom: 28px;
  }

  .activity-detail-divider {
    margin: 0 22px;
  }

  .activity-detail-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .gallery-track {
    grid-auto-columns: 100%;
  }

  .gallery-caption {
    padding: 12px 14px 14px;
    font-size: 13px;
  }

  .lightbox {
    padding: 18px;
  }

  .lightbox img {
    max-width: calc(100vw - 36px);
    max-height: calc(100vh - 120px);
  }

  .lightbox-prev,
  .lightbox-next {
    width: 42px;
    height: 42px;
    font-size: 24px;
  }

  .lightbox-prev {
    left: 10px;
  }

  .lightbox-next {
    right: 10px;
  }
}



/* =====================================
   Scrollable chip navigation (year / activity)
===================================== */

.scrollable-chip-nav{
  position:relative;
  display:block;
  overflow:hidden;
}

/* scroll area */
.scrollable-chip-nav .chip-scroll{
  display:flex;
  flex-wrap:nowrap;
  gap:12px;
  overflow-x:auto;
  overflow-y:hidden;
  scroll-behavior:smooth;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  white-space:nowrap;
  touch-action:pan-x;
  scroll-snap-type:x proximity;
  padding:0 56px;
}

.scrollable-chip-nav .chip-scroll::-webkit-scrollbar{
  display:none;
}

.scrollable-chip-nav .chip-scroll > *{
  flex:0 0 auto;
  scroll-snap-align:start;
}

.activity-jump-nav{
  flex-wrap:nowrap !important;
}

.activity-jump-nav a{
  flex:0 0 auto;
}

/* arrows */
.chip-arrow{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:40px;
  height:40px;
  border-radius:999px;
  border:none;
  background:#fff;
  color:var(--primary);
  box-shadow:0 8px 22px rgba(18, 59, 99, 0.18);
  cursor:pointer;
  font-size:22px;
  line-height:1;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  z-index:4;
}

.chip-arrow.left{
  left:0;
}

.chip-arrow.right{
  right:0;
}

.chip-arrow[hidden]{
  display:none !important;
}

/* gradient fade */
.chip-fade{
  position:absolute;
  top:0;
  bottom:0;
  width:68px;
  pointer-events:none;
  opacity:0;
  transition:opacity 0.2s ease;
  z-index:3;
}

.chip-fade.left{
  left:0;
  background:linear-gradient(to right, rgba(248, 250, 252, 1) 10%, rgba(248, 250, 252, 0));
}

.chip-fade.right{
  right:0;
  background:linear-gradient(to left, rgba(248, 250, 252, 1) 10%, rgba(248, 250, 252, 0));
}

.activity-chip-nav-wrap.can-scroll-left .chip-fade.left,
.activity-chip-nav-wrap.can-scroll-right .chip-fade.right{
  opacity:1;
}

/* mobile */
@media (max-width:760px){
  .scrollable-chip-nav .chip-scroll{
    padding:0;
  }

  .chip-arrow,
  .chip-fade{
    display:none;
  }
}
/* smartphone fix: keep activity chip nav horizontal even though .member-nav becomes column at <=640px */
@media (max-width:640px){
  .activity-jump-nav{
    flex-direction:row !important;
    align-items:stretch !important;
    flex-wrap:nowrap !important;
  }

  .activity-jump-nav a{
    white-space:nowrap;
  }

  .scrollable-chip-nav .chip-scroll{
    display:flex !important;
    overflow-x:auto !important;
    overflow-y:hidden !important;
    -webkit-overflow-scrolling:touch;
    touch-action:pan-x;
  }
}


/* =====================================
   Unified chip nav normalization
   year / activity / member を全ページで同じ挙動にする
===================================== */

.scrollable-chip-nav .chip-scroll,
.year-nav,
.member-nav,
.activity-jump-nav{
  display:flex;
  flex-wrap:nowrap !important;
  overflow-x:auto;
  overflow-y:hidden;
  white-space:nowrap;
  -webkit-overflow-scrolling:touch;
  touch-action:pan-x;
  scrollbar-width:none;
}

.scrollable-chip-nav .chip-scroll::-webkit-scrollbar,
.year-nav::-webkit-scrollbar,
.member-nav::-webkit-scrollbar,
.activity-jump-nav::-webkit-scrollbar{
  display:none;
}

.scrollable-chip-nav .chip-scroll > *,
.year-nav > *,
.member-nav > *,
.activity-jump-nav > *{
  flex:0 0 auto;
}

.activity-jump-nav,
.year-nav,
.member-nav{
  align-items:center;
}

.activity-jump-nav a,
.year-nav a,
.member-nav a{
  flex:0 0 auto;
  white-space:nowrap;
}

@media (max-width:1024px){
  .activity-jump-nav,
  .year-nav,
  .member-nav{
    flex-direction:row !important;
    flex-wrap:nowrap !important;
    align-items:center !important;
  }
}

@media (max-width:760px){
  .activity-jump-nav,
  .year-nav,
  .member-nav{
    flex-direction:row !important;
    flex-wrap:nowrap !important;
    align-items:center !important;
    overflow-x:auto !important;
    overflow-y:hidden !important;
    white-space:nowrap;
    -webkit-overflow-scrolling:touch;
    touch-action:pan-x;
  }

  .activity-jump-nav a,
  .year-nav a,
  .member-nav a{
    flex:0 0 auto;
    white-space:nowrap;
  }
}

@media (max-width:640px){
  .activity-jump-nav,
  .year-nav,
  .member-nav{
    flex-direction:row !important;
    flex-wrap:nowrap !important;
    align-items:center !important;
    overflow-x:auto !important;
    overflow-y:hidden !important;
  }
}


/* ===== Research student JSON auto-render ===== */
.year-chip-nav-wrap.can-scroll-left .chip-fade.left,
.year-chip-nav-wrap.can-scroll-right .chip-fade.right{
  opacity:1;
}

.research-keywords{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0 0 10px;
}

.research-keyword{
  display:inline-flex;
  align-items:center;
  padding:6px 10px;
  border-radius:999px;
  background:var(--surface-soft);
  color:var(--primary);
  border:1px solid var(--line);
  font-size:12px;
  font-weight:700;
  line-height:1;
}

.research-title-text{
  display:block;
}

@media (max-width:980px){
  .year-chip-nav-wrap .chip-arrow,
  .year-chip-nav-wrap .chip-fade{
    display:none;
  }

  .year-chip-nav-wrap .chip-scroll{
    padding:0;
  }
}