*,*::before,*::after{box-sizing:border-box}body{font-family:system-ui,sans-serif;line-height:1.6;max-width:800px;margin:0 auto;padding:1rem;color:#222}header nav{display:flex;gap:1rem;margin-bottom:2rem}header nav a{text-decoration:none;font-weight:600}header nav a:hover{text-decoration:underline}pre{padding:1rem;border-radius:4px;overflow-x:auto;font-size:.9rem;line-height:1.5}code{font-family:ui-monospace,"Cascadia Code","Source Code Pro",Menlo,monospace}footer{margin-top:3rem;padding-top:1rem;border-top:1px solid #ddd;color:#666;font-size:.875rem}