*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0a0a0a;--text:#fff;--accent:#00d4ff}body{background-color:var(--bg);color:var(--text);justify-content:center;align-items:center;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex}