body{font-family:system-ui,-apple-system,Segoe UI,sans-serif;max-width:860px;margin:0 auto;padding:56px 24px;line-height:1.65;color:#18181b;background:#fff}h1{font-size:2.4rem;line-height:1.15}h2{margin-top:30px}.card{padding:22px;border:1px solid #e4e4e7;border-radius:14px;margin:18px 0}nav a{margin-right:18px}.muted{font-size:.95rem}