:root{color-scheme:dark;--bg:#0b1423;--panel:#111f32;--line:#27374a;--ink:#eef3f9;--muted:#a9b9ca;--accent:#89d9ef;--soft:#162b3f;font-family:Inter,system-ui,-apple-system,"Segoe UI","Noto Sans JP",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;font-size:15px;line-height:1.8}a{color:inherit;text-underline-offset:4px}a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}a,summary{-webkit-tap-highlight-color:transparent;touch-action:manipulation}.shell{width:min(100% - 64px,1040px);margin:auto}.skip{position:absolute;top:8px;left:12px;transform:translateY(-180%);background:var(--ink);color:var(--bg);padding:8px 16px;z-index:2}.skip:focus{transform:none}.site-header{display:flex;align-items:center;gap:32px;padding:24px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-size:14px;line-height:1.45;font-weight:700;letter-spacing:.01em;flex-shrink:0}.brand img{display:block}.main-nav{display:flex;gap:24px;margin-left:auto}.main-nav a{text-decoration:none;font-size:13px;color:var(--muted)}.main-nav a:hover,.languages a:hover{color:var(--ink)}.languages{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center}.languages a{font-size:12px;color:var(--muted);text-decoration:none;min-height:32px;display:inline-flex;align-items:center}.languages a[aria-current]{color:var(--accent);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:7px}.hero{padding:49px 0 32px}.eyebrow{font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--accent);margin:0 0 14px}h1{font-size:clamp(29px,4vw,42px);line-height:1.45;letter-spacing:-.035em;font-weight:650;margin:0 0 18px;text-wrap:balance}.lead{font-size:15px;line-height:1.9;color:var(--muted);margin:0}h2{font-size:18px;line-height:1.6;font-weight:650;margin:0 0 18px}.goal-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.goal-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px 24px;display:flex;flex-direction:column;gap:9px;text-decoration:none;min-width:0;transition:border-color .15s,background .15s}.goal-card:hover{border-color:var(--accent);background:var(--soft)}.card-top{display:flex;align-items:center;justify-content:space-between;gap:14px}.entry-icon{width:23px;height:23px;color:var(--accent);flex-shrink:0}.requirement{font-size:11px;color:var(--muted);text-align:right;line-height:1.6}.goal-card h3{font-size:19px;font-weight:650;line-height:1.55;margin:3px 0 0;letter-spacing:-.02em}.description{font-size:13px;line-height:1.85;color:var(--muted);margin:0;max-width:54ch}.route{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--accent);font-size:13px;font-weight:550;margin-top:auto;padding-top:9px}.arrow{font-size:19px;line-height:1}.guide-note{font-size:12px;line-height:1.8;color:var(--muted);margin:18px 0 32px}.guide-note a{display:inline-block;color:var(--accent);margin-left:8px}.about{border-top:1px solid var(--line);padding-top:29px}.about h2{font-size:16px;margin-bottom:9px}.about>p{color:var(--muted);font-size:13px;line-height:1.9;max-width:84ch;margin:0 0 24px}.lab-details{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{cursor:pointer;color:var(--muted);font-size:13px;padding:17px 3px;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:'+';font-size:19px;font-weight:400;color:var(--accent);line-height:1}details[open]>summary:after{content:'−'}summary:hover,details[open]>summary{color:var(--ink)}.research-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 36px;padding:6px 0 25px}.research-grid h3{font-size:14px;margin:0 0 5px;font-weight:600}.research-grid p,.detail-content p{font-size:12px;color:var(--muted);line-height:1.9;margin:0}.detail-content{padding:4px 0 25px}.resource-links{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:15px}.resource-links a{color:var(--accent);font-size:12px;min-height:28px;display:inline-flex;align-items:center;gap:5px}footer{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:11px;padding:24px 0 30px}footer a{text-decoration:none}
@media(max-width:850px){.site-header{flex-wrap:wrap;gap:14px 24px}.languages{margin-left:auto}.main-nav{order:3;margin-left:0;width:100%;gap:24px}.hero{padding-top:35px}}
@media(max-width:600px){.shell{width:calc(100% - 36px)}.site-header{padding:19px 0;gap:13px 10px}.brand{font-size:12px;gap:8px}.brand img{width:30px;height:30px}.languages{gap:2px 10px}.languages a{font-size:11px;min-height:30px}.main-nav a{font-size:12px}.hero{padding:29px 0 25px}h1{font-size:28px;line-height:1.5;margin-bottom:13px}.eyebrow{font-size:9px;letter-spacing:.11em;margin-bottom:10px}.lead{font-size:13px}.lead br{display:none}h2{font-size:16px;margin-bottom:14px}.goal-grid{grid-template-columns:1fr;gap:11px}.goal-card{padding:15px 17px;gap:5px}.entry-icon{width:20px;height:20px}.requirement{font-size:10px}.goal-card h3{font-size:17px;margin-top:2px}.description{display:none}.route{font-size:12px;padding-top:5px}.guide-note{margin:15px 0 27px}.guide-note a{margin-left:0}.about{padding-top:23px}.about h2{font-size:15px}.about>p{font-size:12px}.research-grid{grid-template-columns:1fr;gap:17px}summary{font-size:12px}footer{font-size:10px}}
@media(max-width:390px){.languages{order:3;width:100%;margin-left:0;gap:16px}.main-nav{order:2;width:auto;margin-left:auto;gap:14px}.main-nav a{font-size:11px}.shell{width:calc(100% - 32px)}h1{font-size:26px}.goal-card h3{font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.goal-card{transition:none}}