:root{--bg:#f7fafc;--surface:#fff;--text:#172033;--muted:#5e6b7e;--line:#dce4ee;--primary:#3159d8;--primary-dark:#203f9e;--accent:#eef3ff;--secondary:#e9f7f3;--secondary-dark:#16745e;--warn:#fff7dc;--danger:#fff0f0;--max:1120px;--article:800px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;color:var(--text);background:var(--bg);line-height:1.82}a{color:var(--primary-dark)}a:focus-visible{outline:3px solid #9cb0f1;outline-offset:3px}.site-header{background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(10px)}.nav{max-width:var(--max);margin:auto;display:flex;align-items:center;justify-content:space-between;padding:14px 24px}.brand{text-decoration:none;font-weight:850;color:var(--text);font-size:1.08rem}.brand span{color:var(--primary)}.nav-links{display:flex;gap:20px;align-items:center;font-size:.92rem}.nav-links a{text-decoration:none;color:var(--muted)}.nav-links .product-link{background:var(--primary);color:#fff;padding:8px 12px;border-radius:10px;font-weight:750}.hero{background:linear-gradient(135deg,#eef3ff,#f7fafc 55%,#e9f7f3);border-bottom:1px solid var(--line)}.hero-inner{max-width:var(--max);margin:auto;padding:66px 24px 58px}.eyebrow{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--primary-dark);font-weight:800}.hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.25;max-width:920px;margin:12px 0 18px}.hero p{max-width:780px;font-size:1.07rem;color:var(--muted)}.wrap{max-width:var(--max);margin:auto;padding:48px 24px}.article-wrap{max-width:var(--article);margin:auto;padding:48px 24px 72px}.cards,.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;text-decoration:none;color:inherit;box-shadow:0 8px 26px rgba(38,58,92,.035)}.card:hover{border-color:#aebce2}.card .kicker{font-size:.78rem;color:var(--primary-dark);font-weight:800}.card h2,.card h3{margin:6px 0 8px;line-height:1.45}.card p{margin:0;color:var(--muted)}.breadcrumb{font-size:.86rem;color:var(--muted);margin-bottom:22px}.breadcrumb a{text-decoration:none}.article-header h1{font-size:clamp(2rem,5vw,3rem);line-height:1.36;margin:.3em 0}.lead{font-size:1.08rem;color:#465268}.meta{font-size:.86rem;color:var(--muted);margin:18px 0 32px}.article-body h2{margin-top:2.45em;padding-top:.25em;font-size:1.58rem;line-height:1.45}.article-body h3{margin-top:1.75em;font-size:1.18rem;line-height:1.5}.article-body p,.article-body li{font-size:1rem}.article-body ul,.article-body ol{padding-left:1.4em}.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#edf1f7;padding:.12em .35em;border-radius:5px;overflow-wrap:anywhere}.note{background:var(--accent);border-left:4px solid var(--primary);padding:18px 20px;border-radius:9px;margin:24px 0}.info{background:var(--secondary);border-left:4px solid var(--secondary-dark);padding:18px 20px;border-radius:9px;margin:24px 0}.warning{background:var(--warn);border-left:4px solid #b48118;padding:18px 20px;border-radius:9px;margin:24px 0}.danger{background:var(--danger);border-left:4px solid #b34242;padding:18px 20px;border-radius:9px;margin:24px 0}.comparison{width:100%;border-collapse:collapse;margin:24px 0;font-size:.92rem;background:#fff}.comparison th,.comparison td{border:1px solid var(--line);padding:12px;vertical-align:top}.comparison th{background:#edf2ff;text-align:left}.checklist{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 24px}.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:16px 0}.step strong:first-child{color:var(--primary-dark)}.tag{display:inline-block;padding:3px 9px;margin:2px 4px 2px 0;border-radius:999px;background:var(--secondary);color:var(--secondary-dark);font-size:.77rem;font-weight:750}.status-ok{color:#12664f;font-weight:750}.status-partial{color:#986a08;font-weight:750}.status-no{color:#a33c3c;font-weight:750}.related{border-top:1px solid var(--line);margin-top:48px;padding-top:28px}.related ul{padding-left:1.2em}.cta{display:inline-block;margin-top:16px;padding:11px 18px;background:var(--primary);color:#fff;text-decoration:none;border-radius:10px;font-weight:750}.cta:hover{background:var(--primary-dark)}.cta.secondary{background:#fff;color:var(--primary-dark);border:1px solid var(--line);margin-left:8px}.product-box{background:#24355f;color:#fff;border-radius:18px;padding:26px;margin:34px 0}.product-box h2{margin-top:0;color:#fff}.product-box p{color:#e8edfb}.product-box a{color:#fff}.product-box .cta{background:#fff;color:#24355f}.cta-note{font-size:.86rem!important;color:#d9e0f3!important}.sources{border-top:1px solid var(--line);margin-top:48px;padding-top:28px;font-size:.9rem;color:var(--muted)}.sources h2{font-size:1.15rem;margin-top:0}.sources a{overflow-wrap:anywhere}.scope{font-size:.92rem;color:var(--muted);padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:11px;margin:20px 0}footer{border-top:1px solid var(--line);background:#fff}.footer-inner{max-width:var(--max);margin:auto;padding:28px 24px;color:var(--muted);font-size:.87rem}.footer-inner a{margin-right:14px}@media(max-width:720px){.nav{padding:12px 18px}.nav-links{gap:10px}.nav-links a:not(.product-link){display:none}.nav-links .product-link{font-size:.78rem;padding:7px 9px}.cards,.grid{grid-template-columns:1fr}.hero-inner{padding:48px 18px 44px}.wrap,.article-wrap{padding-left:18px;padding-right:18px}.comparison{display:block;overflow-x:auto}.cta.secondary{display:block;margin-left:0}.article-header h1{font-size:2rem}}