:root{--bg:#f5f3ec;--surface:#fff;--ink:#171914;--muted:#62665b;--line:#dedfd8;--brand:#145c35;--soft:#e2f1e7;--accent:#c75f4c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Segoe UI",sans-serif}.wrap{max-width:900px;margin:auto;padding:22px}.top{display:flex;justify-content:space-between;align-items:center;padding:10px 0 28px}.brand{font-size:20px;font-weight:850;text-decoration:none}.back{padding:8px 12px;border:1px solid var(--line);background:var(--surface);border-radius:8px;text-decoration:none;font-weight:700}.hero{padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:16px}.eyebrow{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}h1{font-size:clamp(30px,6vw,50px);line-height:1.08;letter-spacing:-.03em;margin:8px 0 14px}h2{margin-top:34px;font-size:25px;line-height:1.2}h3{margin-top:24px}p,li{color:#3f443b}.lead{font-size:19px;color:var(--muted)}.cta{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}.cta a{background:var(--brand);color:white;padding:11px 16px;border-radius:9px;text-decoration:none;font-weight:800}.cta a.alt{background:var(--soft);color:var(--brand);border:1px solid #bdd9c6}.box{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px;margin:18px 0}.formula{background:#1c2820;color:#eaf6ed;border-radius:10px;padding:16px;font-weight:750;overflow:auto}.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}.related a{background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:12px;text-decoration:none;font-weight:750}.note{font-size:13px;color:var(--muted);border-top:1px solid var(--line);margin-top:40px;padding-top:20px}