:root{--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";--font-mono:ui-monospace,"Cascadia Mono","Segoe UI Mono","Liberation Mono",Menlo,Monaco,Consolas,monospace;--max-width:42rem;--bg:#fff;--bg-subtle:#f9fafb;--text-primary:#18181b;--text-secondary:#71717a;--text-muted:#a1a1aa;--accent:#3b82f6;--accent-hover:#2563eb;--border:#e4e4e7}[data-theme=dark]{--bg:#18181b;--bg-subtle:#27272a;--text-primary:#fafafa;--text-secondary:#a1a1aa;--text-muted:#71717a;--accent:#60a5fa;--accent-hover:#93c5fd;--border:#3f3f46}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body,html{height:100%}body{font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--text-primary);background-color:var(--bg);transition:background-color .2s ease,color .2s ease}a{color:var(--accent);text-decoration:none;transition:color .2s ease}a:hover{color:var(--accent-hover)}::selection{background:rgba(59,130,246,.2);color:var(--text-primary)}[data-theme=dark] ::selection{background:rgba(96,165,250,.2)}