:root {
    color-scheme: light dark;
    --fg: #14181f;
    --bg: #f6f7f9;
    --accent: #f26b21;
}

@media (prefers-color-scheme: dark) {
    :root {
        --fg: #e8eaed;
        --bg: #14181f;
    }
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
    color: var(--fg);
    background: var(--bg);
}

main {
    text-align: center;
    padding: 2rem;
}

h1 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin: 0 0 1.5rem;
}

output {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}