body{margin:0;background:#f7faf8;color:#203b30;font:17px/1.75 system-ui,sans-serif}main,header,footer{max-width:760px;margin:auto;padding:24px}a{color:#176548;text-underline-offset:4px}nav{display:flex;gap:18px;flex-wrap:wrap}h1{font-size:clamp(28px,5vw,42px);line-height:1.2}h2{font-size:22px;margin-top:32px}footer{border-top:1px solid #d5e3da;font-size:14px}a:focus-visible{outline:3px solid #176548;outline-offset:4px}