feat: add back to home button on all list pages

src/app/(marketing)/cases/page.tsx

@@ -23,6 +23,10 @@ export default function CasesPage() {
 
       <div className="container-wide relative z-10 py-16" ref={contentRef}>
         <div className="max-w-6xl mx-auto">
+          <Link href="/" className="inline-flex items-center text-[#5C5C5C] hover:text-[#C41E3A] transition-colors mb-8">
+            <ArrowLeft className="w-4 h-4 mr-2" />
+            返回首页
+          </Link>
           <div className="grid md:grid-cols-2 gap-8">
             {CASES.map((caseItem, index) => (
               <motion.div