:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;background:#f4f8f6;color:#10231c;font:16px/1.7 Arial,sans-serif}header{background:#073c2c;color:#fff;padding:22px 6vw;display:flex;align-items:center;justify-content:space-between;gap:20px}header a{color:#fff;text-decoration:none;font-weight:700}nav{display:flex;gap:20px;flex-wrap:wrap}main{max-width:920px;margin:auto;padding:48px 24px 80px}h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.1;margin:0 0 12px}h2{margin-top:34px}.card{background:#fff;border:1px solid #d8e6df;border-radius:16px;padding:24px;margin:24px 0;box-shadow:0 8px 30px rgba(5,48,34,.06)}.muted{color:#597068}.button{display:inline-block;background:#0d805b;color:#fff;text-decoration:none;padding:12px 18px;border-radius:10px;font-weight:700}footer{border-top:1px solid #d8e6df;padding:24px;text-align:center;color:#597068}@media(max-width:600px){header{align-items:flex-start;flex-direction:column}nav{gap:12px}}