:root{--blue:#1971c2;--ink:#1a1b1e;--muted:#495057;--line:#e9ecef}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.6;color:var(--ink);background:#fff}a{color:var(--blue)}.site-footer,.site-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;max-width:960px;margin:0 auto;padding:1rem 1.5rem;flex-wrap:wrap}.site-header{border-bottom:1px solid var(--line)}.brand{font-weight:800;font-size:1.25rem;color:var(--blue);text-decoration:none}.site-footer nav,.site-header nav{display:flex;align-items:center;gap:1.25rem}.site-header nav a{text-decoration:none;font-size:.95rem}.btn,.cta{display:inline-block;background:var(--blue);color:#fff!important;text-decoration:none;padding:.5rem 1rem;border-radius:6px;font-weight:600}.site-footer{border-top:1px solid var(--line);margin-top:3rem;color:var(--muted);font-size:.9rem}.site-footer nav a{color:var(--muted);text-decoration:none}main{max-width:720px;margin:0 auto;padding:40px 24px}.prose h1{font-size:2.1rem;line-height:1.15;margin:0 0 .75rem}.prose h2{font-size:1.35rem;margin:2rem 0 .5rem}.prose h3{font-size:1.05rem;margin:1.5rem 0 .25rem}.prose p{margin:.5rem 0}.intro,.prose .intro{font-size:1.15rem;color:var(--muted)}.prose a{text-decoration:underline}.cta{margin-top:2.5rem}ul{padding-left:1.25rem}