feat: 添加面包屑导航组件并优化页面布局

refactor: 重构页面结构和导航逻辑

fix: 修复移动端菜单导航和滚动行为

perf: 优化图片加载性能和资源请求

test: 添加端到端测试和性能测试用例

docs: 更新.gitignore文件

chore: 更新依赖和配置

style: 优化代码格式和类型安全

ci: 调整Playwright测试超时时间

build: 更新Next.js配置和构建选项

src/app/(marketing)/cases/[id]/client.tsx

@@ -2,8 +2,10 @@
 
 import { useEffect, useRef, useState } from 'react';
 import { useRouter } from 'next/navigation';
+import Link from 'next/link';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
+import { Breadcrumb } from '@/components/layout/breadcrumb';
 import { ArrowLeft, CheckCircle2, TrendingUp, Users, Target, Quote, Clock, MessageCircle, Award } from 'lucide-react';
 import { CASES } from '@/lib/constants';
 import type { StaticImageData } from 'next/image';
@@ -66,12 +68,14 @@ export function CaseDetailClient({ caseItem }: CaseDetailClientProps) {
 
   return (
     <main className="min-h-screen bg-white">
+      <Breadcrumb items={[{ label: '成功案例', href: '/cases' }, { label: caseItem.title, href: `/cases/${caseItem.id}` }]} />
       <div className="relative overflow-hidden bg-gradient-to-b from-[#FAFAFA] to-white">
         <div className="container-wide relative z-10 pt-32 pb-20">
           <Button 
             variant="ghost" 
             className="text-[#5C5C5C] hover:text-[#C41E3A] hover:bg-[#C41E3A]/10"
             onClick={() => router.back()}
+            type="button"
           >
             <ArrowLeft className="w-4 h-4 mr-2" />
             返回
@@ -273,11 +277,14 @@ export function CaseDetailClient({ caseItem }: CaseDetailClientProps) {
                 <p className="text-sm text-white/80 mb-4">
                   联系我们的专家团队，获取定制化解决方案
                 </p>
-                <Link href="/#contact">
-                  <Button className="w-full bg-white text-[#C41E3A] hover:bg-white/90">
+                <Button 
+                  className="w-full bg-white text-[#C41E3A] hover:bg-white/90"
+                  asChild
+                >
+                  <Link href="/#contact">
                     联系我们
-                  </Button>
-                </Link>
+                  </Link>
+                </Button>
               </div>
             </div>
           </div>