feat: 添加预览效果页面并优化交互效果

refactor: 优化代码健壮性和类型安全

style: 更新字体样式和全局CSS

fix: 修复IntersectionObserver潜在空引用问题

chore: 更新依赖和ESLint配置

build: 更新构建ID和路由配置

.next/types/routes.d.ts

@@ -1,7 +1,7 @@
 // This file is generated automatically by Next.js
 // Do not edit this file manually
 
-type AppRoutes = "/" | "/about" | "/cases/[id]" | "/contact" | "/news" | "/news/[slug]" | "/products" | "/services"
+type AppRoutes = "/" | "/about" | "/cases/[id]" | "/contact" | "/news" | "/news/[slug]" | "/preview/effects" | "/products" | "/services"
 type PageRoutes = never
 type LayoutRoutes = "/"
 type RedirectRoutes = never
@@ -16,6 +16,7 @@ interface ParamMap {
   "/contact": {}
   "/news": {}
   "/news/[slug]": { "slug": string; }
+  "/preview/effects": {}
   "/products": {}
   "/services": {}
 }