:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,sans-serif;line-height:1.5;color-scheme:light dark;color:#1a1a1a;background-color:#fafafa}*{box-sizing:border-box}body{margin:0;min-height:100vh}.app{max-width:720px;margin:0 auto;padding:4rem 2rem}.app__header h1{margin:0 0 .25rem;font-size:2.25rem}.app__tagline{margin:0;color:#555}.app__placeholder{margin-top:3rem;padding:1.5rem;border:1px dashed #c8c8c8;border-radius:8px;color:#444}@media (prefers-color-scheme: dark){:root{color:#f0f0f0;background-color:#111}.app__tagline{color:#aaa}.app__placeholder{border-color:#444;color:#ccc}}