:root{color-scheme:light;--bg: #f6f5ef;--panel: #ffffff;--ink: #171717;--muted: #62615b;--primary: #22314f;--accent: #b45309;--soft: #e8ece1;--border: color-mix(in srgb, var(--ink), transparent 86%);--shadow: 0 18px 50px color-mix(in srgb, var(--ink), transparent 90%);font-family:Inter,Noto Sans JP,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:var(--bg);color:var(--ink)}body{margin:0;min-width:320px;background:var(--bg);color:var(--ink);letter-spacing:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.site-shell{min-height:100vh}.container{width:min(1160px,calc(100% - 32px));margin-inline:auto}.topbar{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg),white 72%);backdrop-filter:blur(12px)}.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px}.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;font-weight:800}.brand-mark{display:grid;width:34px;height:34px;place-items:center;border-radius:8px;background:var(--primary);color:#fff;font-size:.78rem}.brand-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:.95rem}.nav a{padding:10px 11px;border-radius:8px}.nav a:hover{background:var(--soft);color:var(--ink)}.hero{padding:58px 0 38px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(320px,.94fr);gap:34px;align-items:stretch}.eyebrow{color:var(--primary);font-size:.78rem;font-weight:800;letter-spacing:0;text-transform:uppercase}h1,h2,h3,p{margin-block-start:0}h1{max-width:760px;margin-block-end:18px;font-size:clamp(2.4rem,7vw,5.2rem);line-height:.98;letter-spacing:0}.lead{max-width:740px;color:var(--muted);font-size:1.08rem;line-height:1.8}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:10px 15px;border-radius:8px;border:1px solid var(--border);background:var(--panel);color:var(--ink);font-weight:700}.button.primary{border-color:var(--primary);background:var(--primary);color:#fff}.button:hover{transform:translateY(-1px)}.feature-panel{display:grid;align-content:space-between;min-height:360px;padding:24px;border:1px solid var(--border);border-radius:8px;background:var(--panel);box-shadow:var(--shadow)}.feature-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.feature-list li{display:grid;grid-template-columns:10px 1fr;gap:12px;align-items:start;color:var(--muted);line-height:1.65}.feature-list li:before{content:"";width:10px;height:10px;margin-top:8px;border-radius:3px;background:var(--accent)}.section{padding:34px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-heading h2{margin:0;font-size:clamp(1.55rem,4vw,2.4rem);line-height:1.1}.section-heading p{max-width:560px;margin:0;color:var(--muted);line-height:1.7}.grid{display:grid;gap:16px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{display:grid;gap:12px;min-height:100%;padding:18px;border:1px solid var(--border);border-radius:8px;background:var(--panel)}.card:hover{border-color:color-mix(in srgb,var(--primary),transparent 45%)}.card h3{margin:0;font-size:1.08rem;line-height:1.35}.card p{margin:0;color:var(--muted);line-height:1.7}.meta-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:.86rem}.pill{display:inline-flex;align-items:center;min-height:26px;padding:4px 9px;border-radius:999px;background:var(--soft);color:color-mix(in srgb,var(--primary),var(--ink) 30%);font-size:.8rem;font-weight:800}.compare-table{width:100%;border-collapse:collapse;overflow:hidden;border:1px solid var(--border);border-radius:8px;background:var(--panel)}.compare-table th,.compare-table td{padding:15px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;line-height:1.6}.compare-table th{background:var(--soft);color:var(--ink);font-size:.9rem}.compare-table tr:last-child td{border-bottom:0}.article{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;padding:44px 0}.article-main{min-width:0}.article-main h1{font-size:clamp(2rem,5vw,4rem)}.article-body{display:grid;gap:26px;margin-top:28px}.article-body section{padding-bottom:20px;border-bottom:1px solid var(--border)}.article-body h2{margin-bottom:10px;font-size:1.45rem}.article-body p{color:var(--muted);line-height:1.9}.sidebar{position:sticky;top:92px;align-self:start}.notice{padding:14px;border:1px solid color-mix(in srgb,var(--accent),transparent 45%);border-radius:8px;background:color-mix(in srgb,var(--accent),white 88%);color:var(--ink);line-height:1.7}.legacy-content{display:grid;gap:18px;margin-top:28px;color:var(--muted);line-height:1.9}.legacy-content :is(h2,h3,h4){color:var(--ink);line-height:1.35}.legacy-content :is(img,video,iframe){max-width:100%;height:auto}.legacy-content table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse}.legacy-content :is(th,td){padding:10px;border:1px solid var(--border)}.site-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.footer{margin-top:44px;padding:30px 0;border-top:1px solid var(--border);color:var(--muted)}@media(max-width:860px){.topbar-inner{align-items:start;flex-direction:column;padding:12px 0}.nav{width:100%;overflow-x:auto;padding-bottom:3px}.hero{padding-top:38px}.hero-grid,.article{grid-template-columns:1fr}.feature-panel{min-height:0}.grid.three,.grid.four{grid-template-columns:1fr}.section-heading{display:grid}.sidebar{position:static}}@media(max-width:540px){.container{width:min(100% - 22px,1160px)}h1{font-size:clamp(2.05rem,12vw,3rem)}.hero-actions{display:grid}.button{width:100%}.compare-table{display:block;overflow-x:auto;white-space:nowrap}}