:root{--forest:#173e28;--green:#347a46;--mint:#dff3df;--ink:#1e3125}*{box-sizing:border-box}body{margin:0;color:var(--ink);font:1rem/1.65 Arial,sans-serif}header{padding:1rem;background:var(--mint)}header div,main,footer div{width:min(100% - 2rem,780px);margin:auto}header img{width:145px;height:auto;background:#fff;border-radius:.35rem}main{padding:4rem 0}h1,h2{color:var(--forest);line-height:1.1}h1{font-size:clamp(2.2rem,6vw,3.8rem)}h2{margin-top:2.5rem}a{color:var(--green)}:focus-visible{outline:3px solid #115c32;outline-offset:3px}.back{display:inline-block;margin-top:2rem;font-weight:700}footer{padding:2rem 0;background:var(--forest);color:#fff}