:root{
  --bg:#f7f8fa;
  --surface:#ffffff;
  --fg:#111111;
  --muted:#6b7280;
  --line:#e5e7eb;
  --brand:#1f2f46;
  --accent:#c6a85b;
}

*{box-sizing:border-box}

html,body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--fg);
  font-family:"Noto Sans JP", system-ui, sans-serif;
  -webkit-font-smoothing:antialiased;
}

a{
  color:var(--brand);
  text-decoration:none;
}
a:hover{ opacity:.7; }

.container{
  max-width:1100px;
  margin:0 auto;
  padding:0 32px;
}

/* --- Header --- */

.util{
  background:var(--surface);
}

.util .row{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  padding:28px 0 12px; /* 上余白を少し増やす */
}

.logo-title{
  display:flex;
  align-items:center;
  gap:8px; /* ロゴと文字の間を詰める */
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:24px;
  font-weight:500;
  letter-spacing:.08em;
  line-height:1.2;
}

.site-logo{
  height:36px;
  width:auto;
}

.lang-switch{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  letter-spacing:.06em;
}
.lang-switch a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fafafa;
  color:#333;
}
.lang-switch a:hover{ opacity:.75; }

/* --- Nav --- */

.nav{
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:50;
}

.menu{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:1fr;
  align-items:center;
  width:100%;
  max-width:980px;
  margin:0 auto;
  padding:0 0 14px 0;
  list-style:none;
  gap:0;
}

.menu li{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:0 22px;
}

.menu a{
  display:block;
  padding:0;
  font-size:14px;
  letter-spacing:.08em;
  color:#333;
  transition:.2s;
}
.menu a:hover{ opacity:.6; }

.menu li + li{
  border-left:1px solid #ddd;
}

/* --- Hero --- */

.hero{
  position:relative;
  height:420px;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--line);
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image: var(--hero);
  background-repeat:no-repeat;
  background-position:center 65%;
  background-size:auto 140%;
 }

.hero-inner{
  position:relative;
  z-index:1;
  max-width:1100px;
}

.hero h1{
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:clamp(26px, 3vw, 40px);
  line-height:1.4;
  font-weight:500;
  margin:0 0 16px;
}

.hero p{
  color:var(--muted);
  font-size:16px;
}

/* --- Section --- */

.section{
  padding:50px 0;
  position:relative;
}

.section:nth-of-type(even){
  background:#eceff3;
}

.section h2{
  font-size:clamp(20px, 3vw, 24px);
  font-weight:600;
  letter-spacing:.12em;
  margin-bottom:40px;
  position:relative;
}

.section h2::after{
  content:"";
  display:block;
  width:60px;
  height:2px;
  background:#1f3a5f;
  margin-top:18px;
}

.section p{
  max-width:700px;
  font-size:16px;
  line-height:1.9;
  color:#444;
  margin-bottom:32px;
}

.publication-card{
  margin-top:-10px;
   max-width:900px;
}

.pub-card{
  display:block;
  max-width:900px;
  margin-top:10px;
  padding:18px 22px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--surface);
  color:inherit;
  line-height:1.8;

  /* 軽い影 */
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);

  /* hoverアニメ */
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.pub-card:hover{
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(0,0,0,0.12);
  border-color: rgba(0,0,0,0.12);
  opacity: 1; /* a:hover の opacity:.7 を潰す */
}

.pub-card:active{
  transform: translateY(-1px);
}

.pub-card:focus-visible{
  outline: 3px solid rgba(31,47,70,0.35);
  outline-offset: 3px;
}

.pub-card-inner{
  display:flex;
  gap:24px;
  align-items:flex-start;
}

.pub-cover img{
  width:90px;
  height:auto;
  border:1px solid #ddd;
  box-shadow:0 2px 8px rgba(0,0,0,0.08);
}

.pub-text{
  flex:1;
}

.pub-group-title{
  margin:28px 0 14px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.04em;
  color:#333;
}

@media (prefers-reduced-motion: reduce){
  .pub-card{ transition:none; }
  .pub-card:hover{ transform:none; }
}

.more-link{ margin-top:20px; }

/* ===== お知らせ 横長リスト化 ===== */

.news-list{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--line);
}

.news-row{
  display:grid;
  grid-template-columns:140px 100px 1fr;
  align-items:center;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  color:inherit;
  transition:.2s;
}

.news-row:hover{ background:#f5f6f8; }

.news-row-date{
  font-size:14px;
  color:var(--muted);
}

.news-row-tag{
  font-size:13px;
  border:1px solid var(--line);
  padding:4px 10px;
  border-radius:999px;
  width:fit-content;
  color:#555;
  background:#fafafa;
}

.news-row-title{
  font-size:16px;
  letter-spacing:.05em;
}

@media (max-width:640px){
  .menu{
    grid-auto-flow:row;
    grid-auto-columns:auto;
    max-width:none;
    padding:10px 0;
  }
  .menu li + li{ border-left:none; }
  .menu li{ padding:10px 0; }

  .news-row{
    grid-template-columns:1fr;
    gap:10px;
    padding:16px 0;
  }
}

/* --- Footer --- */

footer{
  margin-top:120px;
  padding:60px 0;
  text-align:center;
  font-size:14px;
  color:#777;
  border-top:1px solid var(--line);
  background:#f3f4f6;
}

footer p{
  margin:6px 0;
}

.link-list{
  list-style:none;
  padding:0;
  margin:0;
}

.link-list li{
  margin-bottom:12px;
  font-size:16px;
}

.link-list a{
  text-decoration:underline;
}

.rules-body h3{
  margin-top:28px;
  margin-bottom:10px;
  font-size:18px;
  letter-spacing:.06em;
}

.rules-body h4{
  margin-top:18px;
  margin-bottom:8px;
  font-size:16px;
  letter-spacing:.04em;
  color:#222;
}

.rules-list{
  max-width:700px;
  margin:0 0 18px 1.2em;
  padding:0;
}

.rules-list li{
  line-height:1.9;
  margin-bottom:6px;
}


.section h2 a,
.section-more{
  display:inline-block;
  vertical-align:middle;
}

.section-more{
  margin-left:16px;
  font-size:14px;
  font-weight:400;
  letter-spacing:.04em;
  position:relative;
  top:4px;
}

.section-more a{
  color:var(--brand);
  text-decoration:underline;
}


.president{
  max-width:700px;
  text-align:right;
  margin-top:30px;
}

.book-header{
  display:grid !important;
  grid-template-columns:220px 1fr !important;
  gap:40px !important;
  align-items:start !important;
  margin:30px 0 !important;
  max-width:920px !important;
}

.book-cover{
  margin:0 !important;
}

.book-cover img{
  display:block !important;
  width:220px !important;
  max-width:none !important;
  height:auto !important;
  border:1px solid #ddd !important;
  box-shadow:0 4px 12px rgba(0,0,0,0.08) !important;
}

.book-meta{
  min-width:0 !important;
  max-width:none !important;
}

.book-meta p{
  max-width:none !important;
  margin-top:0 !important;
}

@media (max-width:640px){
  .book-header{
    grid-template-columns:1fr !important;
    gap:20px !important;
  }

  .book-cover img{
    width:160px !important;
  }
}

.article-body{
  max-width: 720px;
  line-height: 1.9;
  font-size: 16px;
}

.article-body p{
  margin-bottom: 1.2em;
}

.breadcrumb{
  margin-bottom: 18px;
  font-size: 14px;
  color: #6b7280;
}

.breadcrumb ol{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumb li{
  display: flex;
  align-items: center;
}

.breadcrumb li + li::before{
  content: ">";
  margin-right: 6px;
  color: #9ca3af;
}

.breadcrumb a{
  color: inherit;
  text-decoration: none;
}

.breadcrumb a:hover{
  text-decoration: underline;
}

/* --- Article Cards --- */

.page-title{
  font-size:clamp(32px, 4vw, 44px);
  line-height:1.3;
  letter-spacing:.06em;
  margin:0 0 24px;
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-weight:600;
}

.page-lead{
  max-width:760px;
  margin-bottom:34px;
}

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

.article-card-linkwrap{
  display:block;
  color:inherit;
  text-decoration:none;
}

.article-card-linkwrap:hover{
  opacity:1;
}

.article-card{
  display:block;
  background:linear-gradient(180deg, #ffffff 0%, #fcfcfd 100%);
  border:1px solid rgba(31,47,70,0.10);
  border-radius:16px;
  box-shadow:0 6px 18px rgba(15,23,42,0.06);
  overflow:hidden;
  transition:transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
  position:relative;
}

.article-card::before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:4px;
  background:linear-gradient(180deg, var(--brand) 0%, var(--accent) 100%);
  opacity:.9;
}

.article-card:hover{
  transform:translateY(-4px);
  box-shadow:0 16px 34px rgba(15,23,42,0.10);
  border-color:rgba(31,47,70,0.18);
}

.article-card:focus-visible{
  outline:3px solid rgba(31,47,70,0.28);
  outline-offset:3px;
}

.article-card-body{
  padding:26px 30px 18px;
}

.article-card-meta{
  font-size:14px;
  color:var(--muted);
  letter-spacing:.04em;
  margin-bottom:14px;
}

.article-card-title{
  margin:0;
  font-size:clamp(26px, 3vw, 34px);
  line-height:1.45;
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-weight:600;
  color:#111;
}

.article-card-divider{
  width:72px;
  height:2px;
  background:var(--brand);
  margin:20px 0 22px;
  }

.article-card-text{
  max-width:920px;
  margin:0;
  font-size:17px;
  line-height:2;
  color:#374151;
}

.article-card-footer{
  padding:0 30px 24px;
}

.article-card-linktext{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand);
}

.article-card-linktext::after{
  content:"→";
  font-size:15px;
  transform:translateY(-1px);
}

@media (max-width:640px){
  .article-card-body{
    padding:22px 20px 14px;
  }

  .article-card-footer{
    padding:0 20px 20px;
  }

  .article-card-title{
    font-size:28px;
  }

  .article-card-text{
    font-size:16px;
    line-height:1.9;
  }
}

@media (prefers-reduced-motion: reduce){
  .article-card{
    transition:none;
  }

  .article-card:hover{
    transform:none;
  }
}

.section .article-card-title::after{
  content:none;
  display:none;
}

/* --- Article Page --- */

.article-wrap{
  max-width:820px;
  margin:40px 0 0;
  padding:40px 48px;

  background:#ffffff;
  border:1px solid rgba(0,0,0,0.06);
  border-radius:14px;

  box-shadow:0 10px 28px rgba(15,23,42,0.06);
}

.article-body{
  max-width:680px;
  margin:0 auto;
  line-height:2;
  font-size:17px;
}

.article-body p{
  margin-bottom:1.4em;
}

.article-body h2{
  margin-top:42px;
}

@media (max-width:640px){

  .article-wrap{
    padding:28px 22px;
  }

  .article-body{
    font-size:16px;
  }

}

.article-card-grid-top{
  grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
}

.article-card-title-top{
  font-size:24px;
  line-height:1.5;
}

.section .article-card-title-top::after{
  content:none;
  display:none;
}

.article-card-grid-top .article-card-text{
  display:-webkit-box;
  -webkit-line-clamp:2;
  line-clamp:2; /* ←これ追加 */
  -webkit-box-orient:vertical;
  overflow:hidden;
}

.ext-card-list{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:22px;
  margin-top:20px;
}

.ext-card{
  display:block;
  text-decoration:none;
  color:inherit;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  transition:transform .2s ease, box-shadow .2s ease;
}

.ext-card:hover{
  transform:translateY(-3px);
  box-shadow:0 10px 24px rgba(0,0,0,.08);
}

.ext-card-thumb img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:contain;
  background:#fff;
}

.ext-card-content{
  padding:14px 16px 16px;
}

.ext-card-title{
  font-weight:700;
  margin-bottom:6px;
}

.ext-card-text{
  margin:0 0 10px;
  color:var(--muted);
  line-height:1.6;
  font-size:.95rem;
}

.ext-card-url{
  font-size:.85rem;
  color:var(--brand);
}