:root{font-family:system-ui,-apple-system,sans-serif;color:#233e32;background:#f6f8f5;font-size:17px;line-height:1.8}*{box-sizing:border-box}body{margin:0}main{max-width:800px;margin:0 auto;padding:44px 24px 80px}a{color:#17593c;text-underline-offset:4px}nav{display:flex;gap:24px;margin-bottom:40px;flex-wrap:wrap}h1{font-size:2.3rem;line-height:1.2;letter-spacing:-1px}h2{font-size:1.25rem;margin-top:32px}p,li{color:#435c50}header p{color:#65796d}.card{padding:28px;background:white;border:1px solid #dce6df;border-radius:16px;margin-top:24px}footer{border-top:1px solid #dce6df;padding-top:24px;margin-top:36px;font-size:.875rem}@media(max-width:480px){main{padding:24px 20px 60px}h1{font-size:1.9rem}.card{padding:18px}}