:root{--navy:#061a42;--blue:#123eac;--cobalt:#165cff;--ice:#eaf7ff;--cyan:#65d9ff;--ink:#07152f;--muted:#52627a;--line:#bfd7ef;--white:#fff;--max:1220px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.8;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:#fff;padding:.7rem;z-index:999}.site-header{height:82px;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(22,92,255,.15)}.header-inner{max-width:1480px;height:100%;margin:auto;padding:0 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10px)}.menu-btn{display:none;margin-left:auto;border:0;background:none;font-size:1.6rem;color:var(--navy)}.hero{min-height:calc(100vh - 82px);position:relative;display:flex;align-items:center;overflow:hidden;background:#dff3ff}.hero::before{content:"";position:absolute;inset:-2.5%;background:linear-gradient(90deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.78) 38%,rgba(255,255,255,.06) 70%),url('hero-four-themes-2027.webp') center/cover no-repeat}.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(20,88,190,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(20,88,190,.09) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(to bottom,black,transparent 75%);animation:gridmove 16s linear infinite}.hero::before{animation:heroDrift 18s ease-in-out infinite;will-change:transform}.hero .eyebrow,.hero .hero-category,.hero .hero-copy,.hero h1,.hero .hero-lead{opacity:0;animation:heroReveal .8s cubic-bezier(.2,.7,.2,1) forwards}.hero 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h1{font-size:clamp(2.85rem,15vw,4.3rem)}.hero-copy{font-size:1.1rem}.hero-lead{font-size:1.1rem}.event-strip{width:100%;display:grid}.date-block+.date-block{border-left:0;border-top:1px solid var(--line)}.section{padding:74px 18px}.section-head{grid-template-columns:1fr;gap:8px;margin-bottom:32px}.concepts,.theme-grid,.info-grid,.link-panel,.footer-grid,.form-grid,.archive-list{grid-template-columns:1fr}.concept+.concept{border-left:0;border-top:1px solid rgba(101,217,255,.35)}.theme-card:nth-child(odd){border-right:0}.theme-card{border-bottom:1px solid var(--line)!important}.info-item,.info-item:nth-child(odd),.info-item:nth-child(even){padding:20px 0;border-left:0;grid-template-columns:90px 1fr}.news-row{grid-template-columns:90px 1fr 20px}.news-row .tag{display:none}.contact-inner,.footer-meta{align-items:flex-start;flex-direction:column}.page-hero{padding:80px 18px 55px}.simple-table th,.simple-table td{display:block;width:100%;padding:12px 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