:root{--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-error:#dc2626;--color-error-bg:#fef2f2;--color-success:#16a34a;--color-success-bg:#f0fdf4;--color-warning:#d97706;--color-warning-bg:#fffbeb;--color-info:#2563eb;--color-info-bg:#eff6ff;--color-text:#111827;--color-text-secondary:#6b7280;--color-border:#d1d5db;--color-border-focus:#2563eb;--color-bg:#ffffff;--color-bg-page:#f9fafb;--radius:8px;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{color:var(--color-text);background:var(--color-bg-page);-webkit-font-smoothing:antialiased}body,html{font-family:var(--font-sans)}body{min-height:100vh}button,input,select,textarea{font-family:var(--font-sans)}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}