*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#ffffff;--fg:#000000;--fg-muted:#6b6b6b;--border:#e0e0e0}html.dark{--bg:#0a0a0a;--fg:#ffffff;--fg-muted:#999999;--border:#2a2a2a}body{background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;min-height:100vh;transition:background .2s,color .2s}