body{font:17px/1.7 system-ui;max-width:800px;margin:40px auto;padding:24px;color:#25352f;background:#fffdf7}h1,h2,h3{line-height:1.25}a{color:#205b48}nav{display:flex;gap:20px;flex-wrap:wrap}header{border-bottom:1px solid #ddd;padding-bottom:20px}footer{border-top:1px solid #ddd;margin-top:40px;padding-top:20px}