:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}body{margin:0;font-family:system-ui,-apple-system,Noto Sans JP,sans-serif;line-height:1.6}a{color:inherit}.container{max-width:980px;margin:0 auto;padding:20px}.nav a{opacity:.9;margin-right:14px;text-decoration:none}.nav a:hover{opacity:1;text-decoration:underline}.grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;display:grid}.card{border:1px solid #e5e7eb;border-radius:14px;padding:16px}.muted{color:#6b7280;font-size:14px}.btn{border:1px solid #111827;border-radius:10px;padding:10px 12px;text-decoration:none;display:inline-block}.btn:hover{opacity:.85}.badge{border:1px solid #e5e7eb;border-radius:999px;margin-right:6px;padding:2px 8px;font-size:12px;display:inline-block}.footer{border-top:1px solid #e5e7eb;margin-top:28px;padding-top:16px}