:root{--a:#147d64;--bg:#f3faf7}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#172027;font:17px/1.65 system-ui}header,main,footer{max-width:1120px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;border-bottom:1px solid #aaa}nav{display:flex;gap:16px;flex-wrap:wrap}a{color:var(--a)}.brand{font-weight:800;font-size:22px}.hero{padding:70px 0}h1{font-size:clamp(2.3rem,6vw,5rem);line-height:1.05}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}.card,.note,.cta{padding:22px;border:1px solid var(--a);border-radius:18px;margin:18px 0}footer{margin-top:60px;border-top:1px solid #aaa}@media(max-width:700px){header{display:block}}