:root{--bg:#fafaf9;--surface:#fff;--text:#1c1917;--muted:#57534e;--subtle:#78716c;--border:#e7e5e4;--border-strong:#d6d3d1;--accent:#fbbf24;--drop:#c2410c;--link:#1d4ed8;--link-hover:#1e3a8a;--radius:12px;--font-sans:"Noto Sans JP", system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", sans-serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);overflow-wrap:anywhere;margin:0;line-height:1.7}a{color:var(--link);text-decoration:none}a[href]:hover{color:var(--link-hover);text-decoration:underline}:focus-visible{outline:3px solid var(--link);outline-offset:2px}img,svg{max-width:100%}.mono{font-family:var(--font-mono)}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{z-index:200;background:var(--text);color:#fff;border-radius:8px;padding:8px 12px;position:absolute;top:-48px;left:8px}.skip-link:focus{color:#fff;top:8px}.container{max-width:1200px;margin:0 auto;padding:0 24px}.container.narrow{max-width:820px}@media (width<=600px){.container{padding:0 16px}}.site-header{background:var(--surface);border-bottom:1px solid var(--border)}.header-inner{flex-wrap:wrap;align-items:center;gap:16px 24px;padding-top:14px;padding-bottom:14px;display:flex}.brand{color:var(--text);align-items:center;gap:10px;display:flex}.brand:hover{color:var(--text);text-decoration:none}.brand-name{letter-spacing:.02em;font-size:20px;font-weight:900}.search{flex:320px;gap:8px;min-width:0;display:flex}.search input{min-width:0;height:44px;font:inherit;background:var(--surface);color:var(--text);border:1px solid #a8a29e;border-radius:8px;flex:1;padding:0 14px;font-size:15px}.search button{background:var(--text);color:#fff;height:44px;font:inherit;cursor:pointer;border:0;border-radius:8px;padding:0 18px;font-size:15px;font-weight:700}.nav-list{flex-wrap:wrap;gap:18px;margin:0;padding:0;font-size:14px;list-style:none;display:flex}.nav-list a{color:var(--link)}.nav-list a[aria-disabled=true]{cursor:default}.ad-disclosure{border-bottom:1px solid var(--border);color:var(--muted);background:#f5f5f4;margin:0;font-size:12px;line-height:1.5}.ad-disclosure .container{padding-top:6px;padding-bottom:6px;display:block}.pr-label{background:var(--surface);color:#44403c;font-family:var(--font-mono);vertical-align:middle;border:1px solid #a8a29e;border-radius:4px;padding:0 6px;font-size:11px;font-weight:700;line-height:1.6;display:inline-block}.site-footer{border-top:1px solid var(--border);background:var(--surface);margin-top:56px}.footer-inner{color:var(--muted);flex-direction:column;gap:8px;padding-top:24px;padding-bottom:24px;font-size:12px;display:flex}.footer-inner p{margin:0}.footer-links{flex-wrap:wrap;gap:8px 20px;margin:0 0 4px;padding:0;font-size:13px;list-style:none;display:flex}.footer-links a{padding:4px 0;display:inline-block}.copyright{font-family:var(--font-mono)}.btn{min-height:48px;font:inherit;cursor:pointer;border-radius:10px;justify-content:center;align-items:center;padding:0 22px;font-size:16px;font-weight:700;text-decoration:none;display:inline-flex}.btn-primary{background:var(--accent);color:var(--text);border:2px solid var(--accent)}.btn-primary:hover{background:#f59e0b;border-color:#f59e0b}.btn-secondary{color:#fafaf9;background:0 0;border:2px solid #a8a29e}a.btn-secondary:hover{color:#fff;border-color:#fff;text-decoration:none}html.age-locked,html.age-locked 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.btn{flex:160px}.top{flex-direction:column;gap:40px;padding-top:32px;display:flex}.hero{flex-wrap:wrap;align-items:stretch;gap:24px;display:flex}.hero-main{background:var(--text);color:#fafaf9;border-radius:14px;flex-direction:column;flex:2 480px;justify-content:center;gap:12px;padding:32px;display:flex}.hero-main .eyebrow{font-family:var(--font-mono);color:#d6d3d1;margin:0;font-size:13px}.hero-main h1{margin:0;font-size:34px;font-weight:900;line-height:1.35}.hero-main h1 em{color:var(--accent);font-style:normal}.hero-main p{color:#e7e5e4;margin:0;font-size:15px}.kpis{flex:260px;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0;display:grid}.kpi{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:4px;padding:18px;display:flex}.kpi dt{color:var(--muted);font-size:12px}.kpi dd{font-family:var(--font-mono);margin:0;font-size:22px;font-weight:700}.kpi dd 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li+li:before{content:"›";margin-right:4px}.prose{background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-top:16px;padding:32px}@media (width<=600px){.prose{padding:20px 16px}}.prose h1{margin:0 0 8px;font-size:28px;font-weight:900;line-height:1.4}.prose .meta{color:var(--muted);font-size:13px;font-family:var(--font-mono);margin:0 0 24px}.prose h2{border-left:5px solid var(--accent);margin:36px 0 12px;padding-left:12px;font-size:20px;font-weight:900;line-height:1.5}.prose h3{margin:24px 0 8px;font-size:17px}.prose p,.prose li{font-size:16px}.prose ul,.prose ol{padding-left:1.4em}.prose table{border-collapse:collapse;width:100%;font-size:15px}.prose th,.prose td{border-bottom:1px solid var(--border);text-align:left;vertical-align:top;padding:10px 12px}.prose th{width:32%;color:var(--muted);font-weight:500}@media (width<=600px){.prose th,.prose td{width:auto;display:block}.prose th{border-bottom:0;padding-bottom:0}}.note{background:#fffbeb;border:1px solid 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