*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8f9fb;--surface:#ffffff;--border:#e2e5ea;--text:#1a1d23;--text-muted:#6b7280;--primary:#2563eb;--primary-hover:#1d4ed8;--success:#16a34a;--success-bg:#f0fdf4;--success-border:#bbf7d0;--error:#dc2626;--error-bg:#fef2f2;--error-border:#fecaca;--radius:10px}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}