refactor(link): 营销页站内链接统一 StaticLink（静态托管适配）+ 删除 0 引用死代码组件 + QA 页 client/server 拆分

src/components/sections/case-detail-page.tsx

@@ -3,6 +3,7 @@
 import { motion, useScroll, useTransform } from 'framer-motion';
 import { useRef, useState, useEffect } from 'react';
 import { ScrollReveal, StaggerReveal } from '@/components/ui/scroll-reveal';
+import { StaticLink } from '@/components/ui/static-link';
 import { SectionHeader } from '@/components/sections/section-header';
 import { ServiceCard } from '@/components/sections/service-card';
 import { ScrollProgress } from '@/components/ui/scroll-progress';
@@ -175,10 +176,10 @@ function CaseDetailHero({ data }: CaseDetailHeroProps) {
           transition={{ duration: 0.8, delay: 0.8, ease: EASE }}
         >
           <Button size="lg" asChild>
-            <a href="/contact">
+            <StaticLink href="/contact">
               咨询类似方案
               <ArrowRight className="w-4 h-4 ml-2" />
-            </a>
+            </StaticLink>
           </Button>
           <Button size="lg" variant="outline" asChild>
             <a href="#solution">查看方案</a>
@@ -512,13 +513,13 @@ function CTASection() {
           </p>
           <div className="flex flex-col sm:flex-row justify-center gap-4">
             <Button size="lg" asChild>
-              <a href="/contact">
+              <StaticLink href="/contact">
                 免费咨询
                 <ArrowRight className="w-4 h-4 ml-2" />
-              </a>
+              </StaticLink>
             </Button>
             <Button size="lg" variant="outline" asChild>
-              <a href="/cases">查看更多案例</a>
+              <StaticLink href="/cases">查看更多案例</StaticLink>
             </Button>
           </div>
         </ScrollReveal>