:root{--ink:#142018;--muted:#607067;--paper:#f5f7f2;--card:#fff;--line:#dce4dc;--accent:#1f6f4a;--accent2:#dff3e6;--dark:#102319;--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.75}a{color:inherit}.site-header{position:sticky;top:0;z-index:10;background:rgba(245,247,242,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{max-width:var(--max);margin:auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-weight:800;letter-spacing:-.02em;text-decoration:none}.nav-links{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}.nav-links a{text-decoration:none;color:var(--muted)}.nav-links a:hover{color:var(--ink)}main{max-width:var(--max);margin:auto;padding:0 22px 72px}.hero{padding:88px 0 58px;display:grid;grid-template-columns:1.4fr .8fr;gap:48px;align-items:end}.eyebrow{font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}h1{font-size:clamp(42px,7vw,76px);line-height:1.04;letter-spacing:-.055em;margin:12px 0 22px}.lead{font-size:clamp(18px,2.4vw,25px);max-width:760px;color:#33463a}.hero-note{border-left:3px solid var(--accent);padding:8px 0 8px 20px;color:var(--muted)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-block;padding:13px 18px;border-radius:999px;text-decoration:none;font-weight:700;border:1px solid var(--dark)}.button.primary{background:var(--dark);color:#fff}.button.secondary{background:transparent}.section{padding:54px 0;border-top:1px solid var(--line)}.section h2{font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.035em;margin:0 0 16px}.section-intro{max-width:760px;color:var(--muted);margin-bottom:30px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;min-height:190px}.card h3{margin:0 0 10px;font-size:20px}.card p{color:var(--muted);margin:0}.tag{display:inline-block;font-size:12px;font-weight:700;padding:4px 9px;border-radius:999px;background:var(--accent2);color:var(--accent);margin-bottom:14px}.steps{counter-reset:step;display:grid;gap:14px}.step{counter-increment:step;display:grid;grid-template-columns:48px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}.step:before{content:counter(step);width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--dark);color:#fff;font-weight:800}.step h3{margin:3px 0 4px}.step p{margin:0;color:var(--muted)}.notice{background:#fff8df;border:1px solid #eadba2;border-radius:16px;padding:18px 20px}.policy{max-width:820px;padding-top:58px}.policy h1{font-size:clamp(36px,6vw,60px)}.policy h2{margin-top:38px;font-size:24px}.policy p,.policy li{color:#39493f}.article{max-width:780px;padding-top:58px}.article h1{font-size:clamp(36px,6vw,62px)}.article h2{margin-top:42px;font-size:27px}.article-meta{color:var(--muted);font-size:14px}.callout{border-left:4px solid var(--accent);padding:8px 0 8px 18px;margin:28px 0;color:#30453a}.footer{border-top:1px solid var(--line);background:#edf1eb}.footer-inner{max-width:var(--max);margin:auto;padding:34px 22px 46px;display:grid;grid-template-columns:1fr 2fr;gap:32px}.footer-links{display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end}.footer a{color:var(--muted);font-size:13px}.small{font-size:13px;color:var(--muted)}@media(max-width:800px){.hero{grid-template-columns:1fr;padding-top:56px}.grid{grid-template-columns:1fr}.nav{align-items:flex-start}.nav-links{justify-content:flex-end}.footer-inner{grid-template-columns:1fr}.footer-links{justify-content:flex-start}}