:root{font-family:system-ui,sans-serif;color:#17212b;background:#f5f7f8}body{margin:0}header,main,footer{max-width:780px;margin:auto;padding:20px}header{font-weight:700}header a,a{color:#096b72}article{background:white;border-radius:12px;padding:22px;margin:18px 0;box-shadow:0 1px 5px #0001}.field{color:#52606d;font-size:.9rem}h1,h2{line-height:1.35}p{line-height:1.75}.warning{background:#fff3cd;padding:12px;border-radius:8px}footer{font-size:.85rem;color:#667}