:root{--bg:#f7f6f2;--card:#fff;--ink:#182018;--muted:#5d675d;--line:#dce1da;--accent:#1f6b45;--accent2:#e9f3ed;--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}.top{background:#10241a;color:#fff}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0}.brand{font-weight:800;font-size:1.2rem;color:#fff;display:inline-flex;align-items:center;gap:10px}.brand img{display:block;border-radius:8px}.nav{display:flex;gap:16px;flex-wrap:wrap}.nav a{color:#dfe9e2}.hero{padding:72px 0 48px}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center}.eyebrow{display:inline-block;background:var(--accent2);color:var(--accent);padding:6px 10px;border-radius:999px;font-weight:700;font-size:.85rem}.hero h1{font-size:clamp(2.3rem,6vw,4.6rem);line-height:1.02;margin:18px 0}.hero p{font-size:1.15rem;color:var(--muted);max-width:700px}.hero-card,.card,.calc-box,.notice{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:0 8px 30px rgba(20,40,25,.05)}.hero-card{padding:24px}.hero-card strong{display:block;font-size:2.4rem}.section{padding:42px 0}.section h2{font-size:clamp(1.7rem,4vw,2.5rem);margin:0 0 20px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:22px}.card h3{margin-top:0;font-size:1.2rem}.card p{color:var(--muted)}.pill{display:inline-block;border:1px solid var(--line);padding:5px 9px;border-radius:999px;font-size:.78rem;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:#fff;border-radius:12px;padding:11px 16px;font-weight:750;border:0;cursor:pointer}.btn:hover{text-decoration:none;filter:brightness(.96)}.subhero{padding:42px 0 24px}.subhero h1{font-size:clamp(2rem,5vw,3.6rem);line-height:1.08;margin:12px 0}.breadcrumbs{font-size:.9rem;color:var(--muted)}.calc-layout{display:grid;grid-template-columns:1fr .8fr;gap:24px;align-items:start}.calc-box{padding:24px}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field label{display:block;font-weight:700;margin-bottom:6px}.field input,.field select{width:100%;padding:12px;border:1px solid #cfd7cf;border-radius:10px;background:#fff;font:inherit}.result{margin-top:18px;background:#10241a;color:#fff;padding:22px;border-radius:16px}.result strong{font-size:2.2rem;display:block}.result small{color:#c6d7cc}.content{max-width:780px}.content h2{margin-top:38px}.content h3{margin-top:28px}.content p,.content li{color:#394139}.formula{padding:14px 16px;background:#eef2ee;border-left:4px solid var(--accent);border-radius:8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:10px 0}.faq summary{font-weight:750;cursor:pointer}.notice{padding:18px 20px}.footer{margin-top:56px;background:#10241a;color:#cbd8cf;padding:38px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.footer a{color:#e9f1eb}.footer small{color:#9db0a2}.linklist{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.tagline{font-size:.95rem;color:#b6c6ba}@media(max-width:820px){.hero-grid,.calc-layout,.footer-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}.fields{grid-template-columns:1fr}.nav{display:none}}@media(max-width:560px){.grid,.linklist{grid-template-columns:1fr}.hero{padding-top:45px}.wrap{width:min(var(--max),calc(100% - 22px))}}
.calc-box .btn{margin-top:18px}.field small{font-weight:500;color:var(--muted)}.content .notice{margin-bottom:30px}.content ul{padding-left:1.25rem}.content a{font-weight:650}.card .btn{margin-top:4px}.breadcrumbs a{font-weight:600}