*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#0066cc;--color-primary-light:#e8f0fe;--color-danger:#dc2626;--color-danger-light:#fee2e2;--color-success:#16a34a;--color-text:#111827;--color-muted:#6b7280;--color-border:#e5e7eb;--color-bg:#f9fafb;--color-white:#ffffff;--radius:6px;--font:system-ui,-apple-system,sans-serif}body{font-family:var(--font);color:var(--color-text);background:var(--color-bg);line-height:1.5}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer}button,input,select,textarea{font-family:var(--font)}