:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f6f7f4;--surface:#fff;--surface-muted:#eef2ed;--text:#18211d;--muted:#5b6760;--line:#d9e0db;--accent:#146c43;--accent-strong:#0f5132;--warning:#9a5b00}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--text);margin:0;font-family:Arial,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;line-height:1.75}a{color:inherit}.site-header,.site-footer{background:var(--surface);border-bottom:1px solid var(--line);padding:16px clamp(20px,5vw,56px)}.site-header{justify-content:space-between;align-items:center;gap:24px;display:flex}.brand{color:var(--accent-strong);font-size:1.25rem;font-weight:700;text-decoration:none}.site-nav{flex-wrap:wrap;gap:16px;font-size:.95rem;display:flex}.site-nav a,.article-link{color:var(--accent-strong);text-underline-offset:4px;font-weight:700;text-decoration-thickness:2px}.site-footer{border-bottom:0;border-top:1px solid var(--line);color:var(--muted)}.footer-nav,.breadcrumb{flex-wrap:wrap;gap:10px;display:flex}.footer-nav{margin-top:8px}.footer-nav a,.breadcrumb a{color:var(--accent-strong);font-weight:700}.breadcrumb{color:var(--muted);max-width:880px;margin:0 auto 20px;font-size:.9rem}.page{max-width:1120px;margin:0 auto;padding:48px clamp(20px,5vw,56px)}.hero{grid-template-columns:minmax(0,1.4fr) minmax(280px,.8fr);gap:28px;padding:24px 0 40px;display:grid}.eyebrow{color:var(--accent-strong);margin:0 0 10px;font-size:.9rem;font-weight:700}h1{margin:0;font-size:clamp(2rem,5vw,4rem);line-height:1.15}.lead{color:var(--muted);max-width:720px;margin:20px 0 0;font-size:1.12rem}.hero-panel,.cta-band{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:24px}.hero-panel h2,.cta-band h2{margin:0 0 12px;font-size:1.2rem}.hero-panel ul,.article ul{padding-left:1.25rem}.button{background:var(--accent);color:#fff;border-radius:6px;margin-top:16px;padding:10px 16px;font-weight:700;text-decoration:none;display:inline-flex}.section{margin-top:48px}.section h2,.article-heading{border-bottom:1px solid var(--line);margin:0 0 20px;padding-bottom:10px;font-size:1.6rem;line-height:1.35}.article-subheading{margin:32px 0 12px;font-size:1.25rem}.grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:20px}.card h3{margin:0 0 8px;font-size:1.1rem}.card p{color:var(--muted);margin:0}.article{background:var(--surface);border:1px solid var(--line);border-radius:8px;max-width:880px;margin:0 auto;padding:clamp(24px,5vw,48px)}.article h1{font-size:clamp(2rem,4vw,3rem)}.article p{margin:16px 0}.article-table{border-collapse:collapse;max-width:100%;margin:24px 0;display:block;overflow-x:auto}.article-table th,.article-table td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:10px 12px}.note{background:var(--surface-muted);border-left:4px solid var(--accent);padding:16px}.warning{color:var(--warning);font-weight:700}@media (max-width:760px){.site-header,.hero{grid-template-columns:1fr;align-items:start}.site-header{flex-direction:column}.grid{grid-template-columns:1fr}}