:root{font-family:system-ui,sans-serif;color-scheme:light dark}body{margin:0;display:grid;place-items:center;min-height:100vh}main{text-align:center}.clock{font-size:2.5rem;font-variant-numeric:tabular-nums;margin:.25rem 0}.detail{opacity:.7}[data-state=error] .clock{font-size:1.25rem;color:#b00020}