:root{
  --navy:#0b4aa2; --navy-2:#1a73d9; --yellow:#ffd400; --yellow-soft:#e6f0fc; --red:#e3202a; --sky:#e9f2fd;
  --ink:#1d232b; --muted:#5d6672; --line:#dbe5f1; --bg:#f3f7fc; --card:#fff;
  --radius:10px; --shadow:0 1px 2px rgba(11,74,162,.06),0 6px 20px rgba(11,74,162,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Yu Gothic","Meiryo",sans-serif;line-height:1.85;font-size:16px;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto;display:block}
a{color:#1b5fa8}
.inner{max-width:1080px;margin:0 auto;padding:0 20px}
.en{font-size:12px;letter-spacing:.2em;font-weight:700;color:var(--navy-2);margin:0}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site-header .inner{display:flex;align-items:center;gap:16px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:900;font-size:20px;line-height:1.2;margin-right:auto}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em}
.site-nav{display:flex;gap:4px}
.site-nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:15px;padding:8px 14px;border-radius:6px}
.site-nav a:hover{background:var(--bg)}
.site-nav a.on{background:var(--navy);color:#fff}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;padding:10px;cursor:pointer}
.menu-btn i{display:block;height:2px;background:var(--navy);margin:5px 0;border-radius:2px}
.preview-banner{background:var(--red);color:#fff;text-align:center;font-weight:700;padding:8px 16px;font-size:14px}

/* hero */
.hero{position:relative;background:var(--navy) center/cover no-repeat;color:#fff}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,52,128,.94) 0%,rgba(16,90,190,.80) 55%,rgba(40,130,230,.40) 100%)}
.hero .inner{position:relative;padding:96px 20px 104px}
.hero-sub{display:inline-block;background:var(--yellow);color:var(--navy);font-weight:900;padding:2px 12px;border-radius:4px;margin:0 0 14px;letter-spacing:.08em}
.hero h1{font-size:clamp(36px,6vw,64px);line-height:1.2;margin:0 0 18px;font-weight:900;letter-spacing:.04em}
.hero-lead{max-width:560px;font-size:17px;opacity:.92;margin:0 0 28px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin:0}
.btn{display:inline-block;padding:13px 26px;border-radius:999px;font-weight:700;text-decoration:none;font-size:15px}
.btn.primary{background:var(--yellow);color:var(--navy)}
.btn.primary:hover{background:#ffe14d}
.btn.ghost{border:2px solid rgba(255,255,255,.7);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.1)}

/* sections */
.home>section,.about .block{margin:64px 0}
.sec-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.sec-head h2{margin:0;font-size:26px;color:var(--navy)}
.sec-head .en{width:100%}
.sec-head .all{margin-left:auto;font-weight:700;text-decoration:none}
.block h2{font-size:24px;color:var(--navy);margin:0 0 14px;padding-left:14px;border-left:6px solid var(--navy-2)}
.about .block{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px 36px}
.block.split{display:grid;grid-template-columns:2fr 3fr;gap:32px;align-items:center}
.block.split img{border-radius:8px;width:100%;aspect-ratio:4/3;object-fit:cover}
.chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{background:var(--yellow-soft);border:1px solid #bcd5f3;color:var(--navy);padding:4px 14px;border-radius:999px;font-size:14px;font-weight:500}
.officers table{border-collapse:collapse;width:100%;max-width:640px}
.officers td{padding:10px 12px;border-bottom:1px solid var(--line)}
.officers td:first-child{font-weight:700;color:var(--navy);white-space:nowrap;width:7em}
.officers td:last-child{color:var(--muted)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;transition:transform .15s}
.card:hover{transform:translateY(-3px)}
.card .pic{aspect-ratio:16/10;background:#eef0f3;overflow:hidden}
.card .pic img{width:100%;height:100%;object-fit:cover}
.card .noimg{height:100%;display:flex;align-items:center;justify-content:center}
.card .noimg img{width:72px;opacity:.5}
.card .txt{padding:14px 18px 18px}
.card time{font-size:13px;color:var(--muted)}
.card h3{font-size:16px;line-height:1.55;margin:4px 0 0}
.tag-draft{display:inline-block;background:var(--red);color:#fff;font-size:12px;font-weight:700;padding:0 8px;border-radius:4px;margin-left:8px;vertical-align:2px}

.members{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.member{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 18px 16px;text-decoration:none;color:var(--ink);border-top:4px solid var(--navy-2);display:flex;flex-direction:column}
.member:hover{border-top-color:var(--yellow)}
.member h3{margin:0 0 6px;font-size:16px;color:var(--navy)}
.member p{margin:0 0 10px;font-size:13px;color:var(--muted);line-height:1.65;flex:1}
.member .more{font-size:13px;font-weight:700;color:#1b5fa8}

.cta{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;border-radius:var(--radius);padding:44px 32px;text-align:center}
.cta h2{margin:0 0 10px;font-size:24px}
.cta-tel{font-size:28px;font-weight:900;margin:14px 0}
.cta-tel a{color:var(--yellow);text-decoration:none}

/* page head */
.page-head{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;padding:48px 0 44px}
.page-head .en{color:var(--yellow)}
.page-head h1{margin:4px 0 6px;font-size:32px}
.page-head p{margin:0;opacity:.9}
.page-head.small{padding:14px 0}
.crumb{font-size:13px}
.crumb a{color:#fff}
.year-nav{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0 8px}
.year-nav a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 14px;text-decoration:none;font-size:14px;color:var(--navy)}
h2.year{font-size:22px;color:var(--navy);margin:36px 0 16px;padding-bottom:6px;border-bottom:2px solid var(--navy-2)}
.members{margin-top:8px}
.page-head + .inner .members{margin:32px 0 64px}
.page-head + .inner > h2.year:last-child,.page-head + .inner .cards:last-child{margin-bottom:64px}

/* article */
.article{max-width:820px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:36px 44px 32px;margin:32px auto 64px}
.article h1{font-size:28px;line-height:1.45;color:var(--navy);margin:6px 0 24px}
.article time{color:var(--muted);font-size:14px}
.article figure{margin:24px 0}
.article figure img{margin:0 auto;border-radius:6px}
.article .block{margin:0 0 40px}
.article .block figure img{max-height:720px;width:auto}
.info{border-collapse:collapse;width:100%;margin:0 0 24px}
.info th,.info td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.info th{width:7.5em;color:var(--navy);background:var(--sky);white-space:nowrap}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:24px 0}
.gallery img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px}
.linkcard{display:block;border:1px solid var(--line);border-left:4px solid var(--navy-2);border-radius:6px;padding:10px 16px;margin:16px 0;text-decoration:none;color:var(--ink);background:#fcfcfd}
.linkcard strong{display:block;color:#1b5fa8}
.linkcard span{font-size:12px;color:var(--muted)}
.video,.map{position:relative;aspect-ratio:16/9;margin:20px 0}
.video iframe,.map iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:6px}
.pager{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);margin-top:32px;padding-top:16px;font-size:14px}
.pager a{text-decoration:none;max-width:48%}
.pager .next{text-align:right}
.back{margin:24px 0 0;font-size:14px}

/* footer */
.site-footer{background:#082c63;color:#cfdcef;font-size:14px;padding:40px 0 20px}
.site-footer .inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.site-footer .inner>div{display:flex;gap:16px;align-items:flex-start}
.site-footer p{margin:0;line-height:1.8}
.site-footer strong{color:#fff}
.site-footer nav{display:flex;flex-direction:column;gap:4px}
.site-footer nav a{color:#cfdcef;text-decoration:none}
.site-footer nav a.on{color:var(--yellow)}
.copy{text-align:center;font-size:12px;margin-top:28px!important;opacity:.6}

.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.88);display:none;align-items:center;justify-content:center;z-index:50;cursor:zoom-out;padding:16px}
.lightbox.show{display:flex}
.lightbox img{max-width:100%;max-height:100%}

/* responsive */
@media (max-width:900px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .members{grid-template-columns:repeat(2,1fr)}
  .block.split{grid-template-columns:1fr}
}
@media (max-width:720px){
  .menu-btn{display:block}
  .site-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:8px 16px 16px;border-bottom:1px solid var(--line);box-shadow:0 8px 16px rgba(0,0,0,.06)}
  .menu-open .site-nav{display:flex}
  .site-nav a{padding:12px}
  .brand{font-size:17px}
  .brand small{font-size:10px}
  .inner{padding:0 16px}
  .hero .inner{padding:64px 16px 72px}
  .cards{grid-template-columns:1fr}
  .about .block{padding:24px 20px}
  .article{padding:24px 18px;margin:20px auto 40px;border-radius:0}
  .article h1{font-size:22px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .page-head h1{font-size:26px}
  .cta{padding:32px 20px}
  .cta h2{font-size:19px}
}
@media (max-width:420px){.members{grid-template-columns:1fr}}