:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;flex-direction:column;justify-content:space-around;min-height:100vh;min-width:320px}#app{padding:2rem;text-align:center}#checkout{display:none;position:absolute;top:0;left:0;width:100%;height:100%;flex-direction:column;justify-content:center;background-color:#fff}