:root{color-scheme:light;font-family:Arial,"PingFang SC",sans-serif;color:#172b27;background:#fff}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:800px;margin:auto;padding:28px 24px}header{border-bottom:1px solid #dce5e2;display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between}a{color:#135d4b;text-underline-offset:4px}nav{display:flex;gap:18px;flex-wrap:wrap}main{padding-top:44px;padding-bottom:48px}h1{font-size:2.25rem;line-height:1.2;letter-spacing:-.03em}h2{font-size:1.3rem;margin-top:34px;line-height:1.4}p,li{font-size:1rem;line-height:1.8}li+li{margin-top:8px}.meta,footer{color:#52665e;font-size:.9rem;line-height:1.6}footer{border-top:1px solid #dce5e2}a:focus-visible{outline:3px solid #226954;outline-offset:5px}strong{font-weight:700}