*{box-sizing:border-box;padding:0;margin:0}:root{--primary:#2563eb;--primary-hover:#1d4ed8;--secondary:#64748b;--background:#fff;--foreground:#0f172a;--border:#e2e8f0;--muted:#f1f5f9;--error:#ef4444;--success:#10b981}@media (prefers-color-scheme:dark){:root{--background:#0f172a;--foreground:#f8fafc;--border:#334155;--muted:#1e293b}}body,html{max-width:100vw;overflow-x:hidden;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background:var(--background);color:var(--foreground);line-height:1.6}a{color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-hover)}button{font-family:inherit}