:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424}body{margin:0;min-width:320px;min-height:100vh}.app{max-width:960px;margin:0 auto;padding:2rem}header nav{padding:1rem 0;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:2rem}a{color:#646cff;text-decoration:none}a:hover{text-decoration:underline}pre{background:#ffffff0d;padding:1rem;border-radius:6px;overflow-x:auto}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}pre{background:#f5f5f5}header nav{border-bottom:1px solid #e0e0e0}}