:root{color-scheme:light dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.5}body{margin:0;background:Canvas;color:CanvasText}h1{font-size:1.5rem;margin:0 0 .5rem}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}.shell{max-width:34rem;margin:0 auto;padding:3rem 1rem}.muted{opacity:.7}.error{color:#d33}.button{display:inline-block;padding:.55rem 1.1rem;border-radius:6px;background:CanvasText;color:Canvas;text-decoration:none;font-weight:600}.button:hover{opacity:.85}