* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, sans-serif; display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #f5f5f5; }
main { text-align: center; }
h1 { margin-bottom: 0.5em; color: #333; }
p { color: #666; }