feat(front): unify all front user pages to DESIGN.md brand #5B5FED; fix decimal-rgba off-brand purples missed by hex normalization (MarketPage focus shadow, LoginPage radial glow)

frontend/src/pages/front/PricingPage.tsx

@@ -116,7 +116,7 @@ interface CouponItem {
 
 const SERVICE_TYPE_CONFIG: Record<string, { label: string; icon: React.ReactNode; color: string; bg: string }> = {
   app_custom: { label: '应用定制', icon: <IconAppCustom />, color: '#4F46E5', bg: '#EEF2FF' },
-  platform_proxy: { label: '平台代理', icon: <IconPlatform />, color: '#059669', bg: '#ECFDF5' },
+  platform_proxy: { label: '平台代理', icon: <IconPlatform />, color: '#219B5E', bg: '#ECFDF5' },
   data_custom: { label: '数据定制', icon: <IconDataCustom />, color: '#D97706', bg: '#FFFBEB' },
   private_project: { label: '私有化项目', icon: <IconPrivateProject />, color: '#7C3AED', bg: '#F5F3FF' },
 };