:root{color-scheme:light dark;--bg: #fbfbfd;--fg: #16181d;--muted: #6b7280;--accent: #2563eb}@media(prefers-color-scheme:dark){:root{--bg: #0e1015;--fg: #e8eaef;--muted: #8b94a3;--accent: #6ea8ff}}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}main{max-width:34rem;padding:2rem;text-align:center}h1{font-size:2rem;margin:0 0 .5rem;letter-spacing:-.02em}.hint{color:var(--muted);font-size:.9rem;margin-top:1.5rem}.error{color:#d33}