:root{--navy:#0B2545;--navy-deep:#13315C;--blue:#3E7CB1;--blue-soft:#8AA9C7;--ink:#1C2733;--muted:#5D6873;
--paper:#F6F7F5;--white:#fff;--line:#D9DCD6;--r:3px;--w:1160px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif;
color:var(--ink);background:var(--paper);line-height:1.85;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--w);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px;top:8px}

.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;flex-direction:column;line-height:1.15}
.brand-ja{font-weight:700;font-size:1.05rem;color:var(--navy);letter-spacing:.04em}
.brand-en{font-size:.62rem;letter-spacing:.22em;text-transform:uppercase;color:var(--blue)}
.menu{position:relative}
.menu summary{list-style:none;cursor:pointer;font-size:.86rem;font-weight:600;color:var(--navy);padding:8px 16px;border:1px solid var(--navy);border-radius:var(--r)}
.menu summary::-webkit-details-marker{display:none}
.menu summary::after{content:"";display:inline-block;width:6px;height:6px;margin-left:10px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.menu[open] summary{background:var(--navy);color:#fff}
.menu[open] summary::after{transform:rotate(-135deg) translateY(-1px)}
.menu-panel{position:absolute;right:0;top:calc(100% + 10px);width:min(760px,92vw);background:#fff;border:1px solid var(--line);
box-shadow:0 18px 40px rgba(11,37,69,.14);padding:22px 26px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.menu-col h4{font-size:.7rem;letter-spacing:.14em;color:var(--blue);margin-bottom:8px;border-bottom:1px solid var(--line);padding-bottom:6px}
.menu-col a{display:block;font-size:.88rem;padding:3px 0;color:var(--ink)}
.menu-col a:hover{color:var(--blue)}

.crumbs{font-size:.78rem;color:var(--muted);padding:14px 0 0}
.crumbs a{color:var(--blue)}
.crumbs a:hover{text-decoration:underline}
.crumbs .sep{margin:0 8px;color:var(--blue-soft)}

.hero{background:var(--navy);color:#fff;padding:64px 0 56px}
.hero-in{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
.eyebrow{font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;color:var(--blue-soft);margin-bottom:10px}
.hero h1{font-size:clamp(1.9rem,4vw,2.7rem);line-height:1.3;letter-spacing:.04em;margin-bottom:22px}
.hero .lead p{color:#D6E0EA;font-size:.95rem;margin-bottom:12px;max-width:40em}
.stat{margin-top:18px;font-size:.85rem;color:var(--blue-soft);letter-spacing:.1em}
.rights{font-size:.78rem;color:#9FB4C9;margin-top:4px}
.collage{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.collage img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r)}
.collage img:nth-child(2){transform:translateY(14px)}
.collage img:nth-child(4){transform:translateY(14px)}

.page-head{background:#fff;border-bottom:1px solid var(--line);padding:34px 0 30px;margin-top:14px}
.page-head h1{font-size:clamp(1.6rem,3.4vw,2.2rem);color:var(--navy);letter-spacing:.04em;line-height:1.35}
.sub{font-size:.9rem;color:var(--blue);margin-top:6px;letter-spacing:.04em}
.count{display:inline-block;margin-top:12px;font-size:.78rem;color:var(--muted);border:1px solid var(--line);padding:1px 10px;border-radius:99px}
.lead{margin-top:20px;max-width:46em}
.lead p{margin-bottom:12px;color:#3B4652;font-size:.97rem}
.lead p.note,.note{color:var(--muted);font-size:.82rem}
.head-split{display:grid;grid-template-columns:1.2fr 1fr;gap:44px;align-items:start}
.hero-img img{width:100%;height:auto;border-radius:var(--r);box-shadow:0 10px 30px rgba(11,37,69,.16)}

.toc{position:sticky;top:60px;z-index:20;background:rgba(246,247,245,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);font-size:.82rem}
.toc .wrap{display:flex;gap:6px 14px;overflow-x:auto;white-space:nowrap;padding-top:9px;padding-bottom:9px;scrollbar-width:thin}
.toc-l{color:var(--muted);letter-spacing:.1em;font-size:.7rem;align-self:center;margin-right:4px}
.toc a{color:var(--navy);padding:2px 10px;border-radius:99px;border:1px solid transparent}
.toc a:hover{border-color:var(--blue-soft);background:#fff}

.sec{padding:44px 0 8px}
.sec h2{font-size:1.25rem;color:var(--navy);margin-bottom:22px;padding-left:14px;border-left:4px solid var(--blue);line-height:1.4;letter-spacing:.03em}
.sec h2 small{font-size:.7rem;font-weight:400;letter-spacing:.2em;color:var(--blue);margin-left:14px;text-transform:uppercase}
.sec h2 i{font-style:normal;font-weight:400;color:var(--muted);font-size:.85em}
.sec p{max-width:46em;margin-bottom:14px;color:#3B4652}
.label{font-size:.85rem;letter-spacing:.14em;color:var(--muted);margin:30px 0 14px;padding-top:18px;border-top:1px dashed var(--line)}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:26px 22px;margin:6px 0 30px}
.ph{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.ph-link{display:block;background:#111;cursor:zoom-in}
.ph img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;transition:transform .35s,opacity .2s}
.ph-link:hover img{transform:scale(1.03);opacity:.93}
.ph.portrait img{object-fit:contain;background:#111}
.mini{font-size:1rem;color:var(--navy);margin:6px 0 8px}
.gcap{max-width:46em;margin:-8px 0 34px;padding:10px 0 2px 16px;border-left:3px solid var(--blue-soft)}
.gcap strong{display:block;color:var(--navy);font-size:.98rem;margin-bottom:4px}
.gcap p{font-size:.88rem;color:#4A5561;margin-bottom:8px}
.ph figcaption{padding:12px 14px 14px;font-size:.82rem;line-height:1.7;color:#4A5561}
.ph figcaption strong{display:block;color:var(--navy);font-size:.9rem;margin-bottom:3px;line-height:1.5}
.ph figcaption i{font-style:normal;color:var(--muted);font-size:.9em}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:24px 22px;margin-bottom:30px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:box-shadow .25s,transform .25s}
.card:hover{box-shadow:0 14px 30px rgba(11,37,69,.13);transform:translateY(-3px)}
.card-img{display:block;background:var(--navy-deep);aspect-ratio:4/3;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{display:flex;flex-direction:column;gap:2px;padding:14px 16px 16px;flex:1}
.card-title{font-weight:700;color:var(--navy);font-size:1.02rem;line-height:1.45}
.card .en{font-size:.68rem;letter-spacing:.14em;color:var(--blue);text-transform:uppercase}
.card .en i{font-style:normal}
.card-desc{font-size:.8rem;color:#55606B;line-height:1.7;margin-top:6px}
.card-desc b{font-weight:600;color:#3B4652}
.card-meta{margin-top:auto;padding-top:10px;font-size:.74rem;color:var(--muted);letter-spacing:.05em}
.badge{display:inline-block;font-size:.62rem;font-weight:700;letter-spacing:.06em;padding:0 7px;line-height:1.7;border-radius:99px;background:var(--blue);color:#fff;vertical-align:1px;margin-left:4px}
.badge.new{background:#B5482F}

.sibs{padding:40px 0 60px}
.sibs h2{font-size:1rem;color:var(--navy);margin-bottom:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px 10px}
.chips a{font-size:.84rem;padding:4px 14px;border:1px solid var(--line);background:#fff;border-radius:99px;color:var(--navy)}
.chips a:hover{border-color:var(--blue)}
.chips a[aria-current]{background:var(--navy);color:#fff;border-color:var(--navy)}
.pns{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}
.pn{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);padding:14px 18px;border-radius:var(--r)}
.pn:hover{border-color:var(--blue)}
.pn small{font-size:.68rem;letter-spacing:.12em;color:var(--muted)}
.pn b{color:var(--navy)}
.pn.next{text-align:right;grid-column:2}
.pn.prev{grid-column:1}

.site-footer{background:var(--navy);color:#B7C6D6;padding:34px 0 40px;font-size:.8rem;margin-top:20px}
.site-footer p{margin-bottom:6px}
.copy-note{color:#fff}
.back-corp a{color:var(--blue-soft);text-decoration:underline;text-underline-offset:3px}

.lb{position:fixed;inset:0;z-index:100;background:rgba(6,14,26,.94);display:none;flex-direction:column;align-items:center;justify-content:center;padding:18px}
.lb.on{display:flex}
.lb-img{max-width:min(92vw,720px);max-height:66vh;width:auto;height:auto;border-radius:2px;background:#000}
.lb-cap{color:#DDE6EF;max-width:min(92vw,720px);margin-top:14px;font-size:.88rem;line-height:1.7;max-height:20vh;overflow:auto}
.lb-cap strong{display:block;color:#fff;margin-bottom:2px}
.lb-count{position:absolute;top:16px;left:20px;color:#9FB4C9;font-size:.8rem;letter-spacing:.1em}
.lb button{position:absolute;background:none;border:0;color:#fff;cursor:pointer;font-size:2rem;line-height:1;padding:14px;opacity:.85}
.lb button:hover{opacity:1}
.lb-x{top:6px;right:10px}
.lb-p{left:6px;top:50%;transform:translateY(-50%)}
.lb-n{right:6px;top:50%;transform:translateY(-50%)}

@media(max-width:820px){
 .hero-in,.head-split{grid-template-columns:1fr;gap:28px}
 .collage{max-width:460px}
 .menu-panel{grid-template-columns:repeat(2,1fr);right:-8px}
 .wrap{padding:0 18px}
 .grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px 14px}
 .cards{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px 12px}
 .hub ~ .sec .cards{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
 .card-body{padding:10px 12px 12px}
 .card-desc{display:none}
 .pns{grid-template-columns:1fr}.pn.next,.pn.prev{grid-column:1}.pn.next{text-align:left}
 .hub .card-desc{display:block}
}
@media(max-width:820px){.hub ~ .sec .card-desc{display:block}}
@media(max-width:520px){.grid,.hub ~ .sec .cards{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}