:root{--text: #111827;--muted: #4b5563;--bg: #ffffff;--border: #e5e7eb;--accent: #0f172a;--brand: #1d4ed8;--surface: #f9fafb;--good: #166534;--bad: #991b1b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 Georgia,Times New Roman,serif}header.site,footer.site{font-family:Helvetica Neue,Arial,sans-serif;font-size:.95rem}header.site{border-bottom:1px solid var(--border)}header.site .inner,footer.site .inner{max-width:760px;margin:0 auto;padding:14px 16px;display:flex;justify-content:space-between;align-items:center;gap:16px}header.site a.brand{font-weight:700;color:var(--accent);text-decoration:none}main{max-width:760px;margin:0 auto;padding:40px 16px 64px}h1,h2,h3{font-family:Helvetica Neue,Arial,sans-serif;line-height:1.25;color:var(--accent);margin:2rem 0 .75rem}h1{font-size:2.1rem;margin-top:0}h2{font-size:1.45rem;border-top:1px solid var(--border);padding-top:1.5rem}h3{font-size:1.1rem}p,ul,ol{margin:0 0 1rem}ul,ol{padding-left:1.25rem}ul{list-style:disc}ol{list-style:decimal}a:focus-visible{outline:3px solid var(--brand);outline-offset:4px}.skip-link{position:absolute;left:-9999px}.skip-link:focus{position:static}li{margin-bottom:.35rem}a{color:var(--brand)}.meta{color:var(--muted);font-family:Helvetica Neue,Arial,sans-serif;font-size:.95rem;margin-bottom:1.5rem}.lead{font-size:1.15rem}.example{border:1px solid var(--border);border-radius:8px;background:var(--surface);padding:12px 16px;margin:0 0 1rem;font-family:Helvetica Neue,Arial,sans-serif;font-size:.95rem}.example p{margin:0 0 .4rem}.example p:last-child{margin-bottom:0}.label{font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em}.label.bad{color:var(--bad)}.label.good{color:var(--good)}.cta{border:2px solid var(--brand);border-radius:12px;padding:20px;margin:2rem 0;font-family:Helvetica Neue,Arial,sans-serif}.cta p{margin-bottom:.75rem}.cta a.button{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;font-weight:700;padding:10px 18px;border-radius:8px}.author{display:flex;gap:16px;align-items:flex-start;border-top:1px solid var(--border);padding-top:1.5rem;margin-top:2rem;font-family:Helvetica Neue,Arial,sans-serif;font-size:.95rem}.author img{width:64px;height:64px;border-radius:50%;-o-object-fit:cover;object-fit:cover;flex-shrink:0}footer.site{border-top:1px solid var(--border);color:var(--muted)}footer.site a{color:var(--muted)}@media(max-width:600px){body{font-size:16px}h1{font-size:1.7rem}}