:root{--navy:#071525;--blue:#3676b9;--ink:#0b1728;--muted:#607084;--line:#dce5ee;--bg:#f6f9fc;--white:#fff;--shadow:0 18px 50px rgba(8,30,55,.10);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;color:var(--ink);background:var(--white);line-height:1.8}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 40px));margin:auto}header{position:fixed;z-index:10;top:0;left:0;right:0;background:rgba(255,255,255,.84);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid rgba(220,229,238,.75)}.nav{height:76px;justify-content:space-between;gap:24px;position:relative}.brand,.nav{display:flex;align-items:center}.brand{gap:12px;flex-shrink:0;font-weight:800;letter-spacing:.04em}.brand img{width:42px;height:42px;object-fit:contain}.brand span small{display:block;font-size:10px;letter-spacing:.16em;color:var(--muted);font-weight:600}.links{display:flex;align-items:center;justify-content:flex-end;gap:24px;flex:1 1;font-size:13px;font-weight:600;color:#3f5267}.links a:hover{color:var(--blue)}.nav-cta{margin-left:4px;padding:9px 16px;border:1px solid var(--line);border-radius:999px}.menu-toggle{display:none;border:1px solid var(--line);background:white;color:var(--navy);border-radius:10px;width:42px;height:42px;font-size:22px;line-height:1;cursor:pointer}.hero{padding:150px 0 95px;background:radial-gradient(circle at 78% 28%,#e9f3fc 0,transparent 34%),linear-gradient(180deg,#fff,#f8fbfe)}.hero-grid{display:grid;grid-template-columns:1fr;grid-gap:60px;gap:60px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.eyebrow:before{content:"";width:28px;height:1px;background:var(--blue)}h1{font-size:clamp(44px,6vw,76px);line-height:1.05;letter-spacing:-.05em;margin:18px 0 22px;color:var(--navy)}h1 span{display:block;font-size:.38em;letter-spacing:.08em;color:#51677f;margin-top:18px;font-weight:700}.lead{font-size:17px;color:#526579;max-width:620px}.actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:12px;font-weight:700;font-size:14px}.btn-primary{background:var(--navy);color:white;box-shadow:0 10px 24px rgba(7,21,37,.18)}.btn-secondary{border:1px solid var(--line);background:white}section{padding:100px 0;content-visibility:auto;contain-intrinsic-size:700px}.hero{content-visibility:visible;contain-intrinsic-size:auto}.section-head{max-width:720px;margin-bottom:48px}.kicker{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.16em}.section-head h2{font-size:clamp(30px,4vw,46px);line-height:1.2;margin:9px 0 14px;color:var(--navy);letter-spacing:-.035em}.section-head p{color:var(--muted);margin:0}.mission-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}.portal{background:var(--bg)}.cards{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:20px;gap:20px}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);transition:.2s}.card:hover{transform:translateY(-4px)}.icon{width:48px;height:48px;border-radius:14px;background:#edf5fc;color:var(--blue);display:grid;place-items:center;font-weight:800}.card h3{margin:20px 0 8px}.card p{font-size:14px;color:var(--muted);margin:0}.pill{display:inline-block;margin-top:18px;padding:5px 10px;border-radius:999px;background:#f1f5f8;color:#708092;font-size:11px;font-weight:700}.features-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:22px;gap:22px}.feature{padding:30px;border:1px solid var(--line);border-radius:20px}.feature h3{margin:0 0 8px;font-size:18px}.feature p{margin:0;color:var(--muted);font-size:14px}.feature b{color:var(--blue)}.join{background:linear-gradient(135deg,#eef6fd,#f8fbfe)}.join-box{background:white;border:1px solid var(--line);border-radius:28px;padding:55px;display:grid;grid-template-columns:1fr 1fr;grid-gap:40px;gap:40px;box-shadow:var(--shadow)}.join-type{padding:25px;border:1px solid var(--line);border-radius:18px}.join-type h3{margin:0 0 10px}.join-type p{margin:0;color:var(--muted);font-size:14px}.join-action{grid-column:1/-1}.org{display:grid;grid-template-columns:1fr 1fr;grid-gap:20px;gap:20px}.org-box{border:1px solid var(--line);border-radius:20px;padding:28px}.org-box h3{margin-top:0}.person{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #edf1f5;font-size:14px}.person:last-child{border-bottom:0}.role{color:var(--muted)}footer{background:#06111f;color:white;padding:55px 0 30px}.footer-top{display:flex;justify-content:space-between;gap:30px}.footer-brand{font-size:22px;font-weight:800}.footer-copy{color:#7f91a4;font-size:13px;max-width:520px}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:20px;color:#637487;font-size:11px}@media(max-width:820px){.menu-toggle{display:block}.links{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:8px;background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.links.is-open{display:flex}.links a{padding:12px 14px}.nav-cta{margin:4px 0 0;text-align:center}.hero{padding-top:125px}.cards,.features-grid,.hero-grid,.join-box,.mission-grid,.org{grid-template-columns:1fr}.join-box{padding:30px}.footer-top{flex-direction:column}section{padding:75px 0}}