:root { color-scheme: dark; font-family: system-ui, sans-serif; }
    body { margin: 0; min-height: 100svh; display: grid; place-items: center; background: #121a24; color: #f4f6f8; }
    main { padding: 2rem; max-width: 40rem; }
    h1 { font-size: clamp(2.5rem, 8vw, 5rem); margin: 0 0 1rem; letter-spacing: -.04em; }
    p { color: #bac6d6; font-size: 1.25rem; }