:root{
  --bg:#f8f9fa;
  --surface:#ffffff;
  --text:#1a2332;
  --muted:#5f6b7a;
  --brand:#2c5aa0;
  --brand-2:#1e4380;
  --accent:#c77700;
  --card:#ffffff;
  --ring: rgba(44,90,160,.3);
  --maxw: 1100px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans JP","Hiragino Kaku Gothic ProN","Meiryo UI",sans-serif;line-height:1.6}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin-inline:auto;padding:0 1rem}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid #e1e4e8;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:.75rem;min-height:64px}
.brand{display:flex;flex-direction:column;gap:.15rem;color:var(--text);text-decoration:none}
.brand-title{font-weight:800;font-size:1.25rem;letter-spacing:.4px}
.brand-year{color:var(--brand-2)}
.brand-sub{font-size:.8rem;color:var(--muted);letter-spacing:.2px}
.site-nav ul{display:flex;gap:1rem;list-style:none;margin:0;padding:0}
.site-nav a{display:block;padding:.5rem .6rem;border-radius:.6rem}
.site-nav a:hover, .site-nav a:focus{outline:none;background:#f3f4f6}
.menu-toggle{display:none;background:transparent;border:0;cursor:pointer}
.menu-bar{display:block;width:22px;height:2px;background:var(--text);margin:4px 0;border-radius:2px}

.hero{padding:5rem 0 3rem;background:linear-gradient(135deg, #f0f4f8 0%, #e6edf5 100%);border-bottom:1px solid #d1dae6}
.headline{font-size:clamp(2rem,6vw,3.2rem);margin:.25rem 0}
.subhead{color:var(--muted);margin:0 0 .5rem 0}
.details{color:var(--muted)}
.cta-group{display:flex;gap:.75rem;margin-top:1rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.6rem .9rem;border-radius:.7rem;border:1px solid #c5cdd8;background:var(--surface);color:var(--text);text-decoration:none}
.btn.primary{border-color:transparent;background:linear-gradient(90deg,var(--brand),var(--brand-2));color:#ffffff;font-weight:700}
.btn:hover{filter:brightness(1.05)}

.section{padding:3rem 0;border-top:1px solid #e1e4e8}
.section.alt{background:#f7f9fb}
.card{background:var(--card);border:1px solid #d1dae6;border-radius:1rem;padding:1rem;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.two-col{display:block}
.two-col aside.card{float:right;width:min(100%, 340px);margin-left:1.5rem;margin-bottom:1rem}
@media (max-width: 900px){
  .two-col aside.card{float:none;width:100%;margin-left:0}
  .site-nav{position:absolute;top:64px;right:0;left:0;background:#ffffff;border-bottom:1px solid #e1e4e8;padding:.5rem 1rem;max-height:0;overflow:hidden;opacity:0;transition:max-height 0.3s ease, opacity 0.3s ease}
  .site-nav.open{max-height:500px;opacity:1}
  .site-nav ul{flex-direction:column;gap:.25rem}
  .menu-toggle{display:block}
}

.prose h1,.prose h2,.prose h3{line-height:1.2;margin:0 0 .6rem 0}
.prose p{margin:.4rem 0 1rem}
.prose ul{margin:.5rem 0 1rem;padding-left:1.2rem}
.prose li{margin:.25rem 0}
.timeline{list-style:none;padding:0;margin:.5rem 0}
.timeline li{display:flex;justify-content:space-between;gap:1rem;border-bottom:1px dashed #cbd5e0;padding:.5rem 0}
.timeline time{color:var(--muted)}
.logo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1rem}
.logo{background:#f7f9fb;border:1px dashed #cbd5e0;border-radius:.75rem;display:flex;align-items:center;justify-content:center;min-height:72px}
.placeholder{color:#9ca3af}
.person-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.person-card{background:var(--card);border:1px solid #d1dae6;border-radius:1rem;padding:1rem;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.avatar{height:120px;border-radius:.75rem;background:#f7f9fb;border:1px dashed #cbd5e0;display:flex;align-items:center;justify-content:center;margin-bottom:.5rem}
.map-embed{height:300px;border-radius:.75rem;background:#f7f9fb;border:1px dashed #cbd5e0;display:flex;align-items:center;justify-content:center;margin:1rem 0}
.table{width:100%;border-collapse:collapse;border:1px solid #d1dae6;border-radius:.5rem;overflow:hidden}
.table th,.table td{border-bottom:1px solid #e1e4e8;padding:.6rem;text-align:left}
.table thead{background:#f3f4f6;color:var(--text);font-weight:600}

.site-footer{border-top:1px solid #e1e4e8;padding:2rem 0;color:var(--muted);background:#f7f9fb}
.site-footer a{color:var(--muted)}