*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-maroon:#500000;--color-maroon-dark:#3a0000;--color-bg:#f7f7f7;--color-surface:#ffffff;--color-text:#1a1a1a;--color-text-secondary:#5a5a5a;--color-text-placeholder:#9a9a9a;--color-border:#e0e0e0;--color-error:#c0392b;--color-error-bg:#fdf2f2;--color-success-bg:#f0faf3;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-card:0 2px 16px rgba(0,0,0,0.07),0 1px 3px rgba(0,0,0,0.05);--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);font-size:1rem;line-height:1.6;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}