:root{color-scheme:light dark}body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;font-family:system-ui,sans-serif}main{text-align:center}h1{font-size:2rem;font-weight:600;letter-spacing:.05em}footer{margin-top:1rem;font-size:.875rem;opacity:.6}