:root{color-scheme:light;--ink:#142e49;--muted:#53677a;--teal:#087c72;--line:#dce6eb}*{box-sizing:border-box}body{margin:0;background:#f4f7f9;color:var(--ink);font:17px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{max-width:820px;margin:0 auto;padding:32px 24px 64px}header{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:28px}.brand{font-size:14px;font-weight:750;letter-spacing:.04em;color:var(--teal)}h1{font-size:clamp(30px,6vw,44px);line-height:1.15;letter-spacing:-.03em;margin:14px 0}h2{font-size:23px;line-height:1.3;margin-top:32px}p,li{max-width:72ch}a{color:#006e65;text-underline-offset:3px}nav{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:15px}a:focus-visible{outline:3px solid #e8a325;outline-offset:4px}.callout{padding:16px 20px;border-left:4px solid var(--teal);background:white;border-radius:0 8px 8px 0}footer{border-top:1px solid var(--line);margin-top:36px;padding-top:20px;font-size:14px;color:var(--muted)}@media(max-width:480px){main{padding:24px 18px 40px}body{font-size:16px}}