fix(marketing): resolve dogfood findings on cases, products, and contact

修复首页/案例/产品/联系页 dogfood 测试发现的 7 个问题：
- 案例页行业筛选按钮失效
- 产品矩阵页计数器显示 "0+"
- ERP 产品详情页核心功能区空白占位
- 联系表单无提交反馈
- 服务卡片图标被屏幕阅读器读取
- 产品卡片链接文本重复类别标签
- 联系页装饰图标缺少 aria-hidden

添加 dogfood-regression-output 报告与截图。

src/app/(marketing)/cases/cases-content-v3.tsx

@@ -243,6 +243,9 @@ export default function CasesContentV3({
                 {industries.map((industry) => (
                   <button
                     key={industry.id}
+                    type="button"
+                    role="radio"
+                    aria-checked={selectedIndustry === industry.id}
                     onClick={() => setSelectedIndustry(industry.id)}
                     className={cn(
                       'px-4 py-2 text-xs font-medium transition-all duration-300',

src/app/(marketing)/contact/contact-content-v3.tsx

@@ -281,7 +281,7 @@ function ContactFormContent({ data }: { data: ContactData }) {
                 <h2 className="text-xl font-bold text-ink mb-8">{data.contactTitle || ''}</h2>
                 <div className="space-y-6" data-testid="contact-info">
                   <div className="flex items-start gap-4" data-testid="email-info">
-                    <div className="w-12 h-12 border border-border-primary bg-white flex items-center justify-center shrink-0">
+                    <div className="w-12 h-12 border border-border-primary bg-white flex items-center justify-center shrink-0" aria-hidden="true">
                       <Mail className="w-5 h-5 text-text-secondary" />
                     </div>
                     <div>
@@ -297,7 +297,7 @@ function ContactFormContent({ data }: { data: ContactData }) {
                   </div>
 
                   <div className="flex items-start gap-4" data-testid="address-info">
-                    <div className="w-12 h-12 border border-border-primary bg-white flex items-center justify-center shrink-0">
+                    <div className="w-12 h-12 border border-border-primary bg-white flex items-center justify-center shrink-0" aria-hidden="true">
                       <MapPin className="w-5 h-5 text-text-secondary" />
                     </div>
                     <div>
@@ -313,7 +313,7 @@ function ContactFormContent({ data }: { data: ContactData }) {
               <div className="relative border border-border-primary bg-white p-8 overflow-hidden">
                 <div className="absolute top-0 left-0 bottom-0 w-0.5 bg-brand/60" />
                 <div className="flex items-center gap-3 mb-4">
-                  <Clock className="w-5 h-5 text-brand" />
+                  <Clock className="w-5 h-5 text-brand" aria-hidden="true" />
                   <h2 className="text-base font-bold text-ink">{data.workHoursTitle || ''}</h2>
                 </div>
                 <div className="flex justify-between" data-testid="work-hours-row">
@@ -325,7 +325,7 @@ function ContactFormContent({ data }: { data: ContactData }) {
               <div className="relative border border-border-primary bg-white p-8 overflow-hidden">
                 <div className="absolute top-0 left-0 bottom-0 w-0.5 bg-brand/60" />
                 <div className="flex items-center gap-3 mb-4">
-                  <HeadphonesIcon className="w-5 h-5 text-text-secondary" />
+                  <HeadphonesIcon className="w-5 h-5 text-text-secondary" aria-hidden="true" />
                   <h2 className="text-base font-bold text-ink">{data.commitmentTitle || ''}</h2>
                 </div>
                 <div className="space-y-4">

src/app/(marketing)/products/product-detail-content-v3.tsx

@@ -119,7 +119,7 @@ function FeaturesSection({ features }: FeaturesSectionProps) {
             <div className="flex items-center gap-5">
               <div className="w-14 h-px bg-brand" />
               <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
-                Core Features
+                核心功能
               </span>
               <div className="w-14 h-px bg-brand" />
             </div>
@@ -129,25 +129,25 @@ function FeaturesSection({ features }: FeaturesSectionProps) {
           </h2>
         </ScrollReveal>
 
-        <div className="grid md:grid-cols-2 lg:grid-cols-3 gap-px bg-border-primary">
-          <StaggerReveal staggerDelay={0.08} delayChildren={0.05}>
-            {features.map((feature, idx) => (
-              <div
-                key={idx}
-                className="group relative p-8 bg-white hover:bg-bg-secondary transition-all duration-500"
-              >
-                <div className="absolute top-0 left-0 h-full w-1 scale-y-0 group-hover:scale-y-100 transition-transform duration-700 origin-top bg-brand" />
-
-                <div className="flex items-start gap-5">
-                  <div className="w-10 h-10 rounded-xl bg-brand-soft flex items-center justify-center text-brand shrink-0 mt-0.5">
-                    <Check className="w-5 h-5" />
-                  </div>
-                  <p className="text-lg text-ink font-medium leading-relaxed">{feature}</p>
+        <StaggerReveal
+          className="grid md:grid-cols-2 lg:grid-cols-3 gap-px bg-border-primary"
+          staggerDelay={0.08}
+          delayChildren={0.05}
+        >
+          {features.map((feature, idx) => (
+            <div
+              key={idx}
+              className="group relative p-8 bg-white hover:bg-bg-secondary transition-all duration-500"
+            >
+              <div className="flex items-start gap-5">
+                <div className="w-10 h-10 rounded-xl bg-brand-soft flex items-center justify-center text-brand shrink-0 mt-0.5">
+                  <Check className="w-5 h-5" />
                 </div>
+                <p className="text-lg text-ink font-medium leading-relaxed">{feature}</p>
               </div>
-            ))}
-          </StaggerReveal>
-        </div>
+            </div>
+          ))}
+        </StaggerReveal>
       </div>
     </section>
   );
@@ -166,7 +166,7 @@ function BenefitsSection({ benefits }: BenefitsSectionProps) {
       <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10">
         <div className="grid lg:grid-cols-2 gap-20 items-start">
           <ScrollReveal>
-            <SectionLabel>Benefits</SectionLabel>
+            <SectionLabel>产品价值</SectionLabel>
             <h2 className="text-3xl md:text-4xl lg:text-5xl font-bold text-ink tracking-tight leading-tight mb-8">
               产品价值
             </h2>
@@ -182,7 +182,6 @@ function BenefitsSection({ benefits }: BenefitsSectionProps) {
                   key={idx}
                   className="group relative p-8 bg-white hover:bg-bg-secondary transition-all duration-500"
                 >
-                  <div className="absolute left-0 top-0 bottom-0 w-1 bg-brand scale-y-0 group-hover:scale-y-100 transition-transform duration-500 origin-top" />
                   <div className="flex items-start gap-6">
                     <div className="w-12 h-12 rounded-2xl bg-brand-soft/50 flex items-center justify-center text-brand shrink-0">
                       <TrendingUp className="w-6 h-6" />
@@ -215,7 +214,7 @@ function ProcessSection({ process }: ProcessSectionProps) {
             <div className="flex items-center gap-5">
               <div className="w-14 h-px bg-brand" />
               <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
-                Implementation
+                实施流程
               </span>
               <div className="w-14 h-px bg-brand" />
             </div>
@@ -269,7 +268,7 @@ function CaseStudiesSection({ caseStudies }: CaseStudiesSectionProps) {
             <div className="flex items-center gap-5">
               <div className="w-14 h-px bg-brand" />
               <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
-                Case Studies
+                客户案例
               </span>
               <div className="w-14 h-px bg-brand" />
             </div>
@@ -338,7 +337,7 @@ function CertificationsSection({ certifications }: CertificationsSectionProps) {
             <div className="flex items-center gap-5">
               <div className="w-14 h-px bg-brand" />
               <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
-                Certifications
+                资质认证
               </span>
               <div className="w-14 h-px bg-brand" />
             </div>
@@ -387,7 +386,7 @@ function CTASection({ product }: CTASectionProps) {
             <div className="flex items-center gap-5">
               <div className="w-14 h-px bg-brand" />
               <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
-                Get Started
+                开始使用
               </span>
               <div className="w-14 h-px bg-brand" />
             </div>
@@ -444,15 +443,17 @@ export default function ProductDetailContentV3({ product }: ProductDetailContent
           categories={product.techStack}
         />
       )}
-      <DataProofSection
-        title="可衡量的成果"
-        subtitle="用数据说话，每一项指标都源自真实客户案例"
-        metrics={product.dataProofs.map((dp) => ({
-          value: dp.value,
-          label: dp.metric,
-          description: dp.description,
-        }))}
-      />
+      {product.dataProofs && product.dataProofs.length > 0 && (
+        <DataProofSection
+          title="可衡量的成果"
+          subtitle="用数据说话，每一项指标都源自真实客户案例"
+          metrics={product.dataProofs.map((dp) => ({
+            value: dp.value,
+            label: dp.metric,
+            description: dp.description,
+          }))}
+        />
+      )}
       <CaseStudiesSection caseStudies={product.caseStudies} />
       <CertificationsSection certifications={product.certifications} />
       {product.faqs && product.faqs.length > 0 && (

src/app/(marketing)/products/products-content-v3.tsx

@@ -21,7 +21,8 @@ const PRODUCT_ICONS: Record<string, React.ReactNode> = {
 };
 
 function useCountUp(target: number, start: boolean, duration: number = 2000) {
-  const [count, setCount] = useState(0);
+  // 初始值设为 target，避免动画触发前或用户偏好减少动效时显示 0
+  const [count, setCount] = useState(target);
   const prefersReducedMotion = useReducedMotion();
 
   useEffect(() => {
@@ -162,7 +163,7 @@ function ProductCard({ product }: { product: Product }) {
             <div className="text-xs text-text-muted mb-1">{bundleLabel}</div>
             <h3 className="text-lg font-bold text-text-primary">{product.title}</h3>
           </div>
-          <span className="px-2 py-1 text-xs bg-brand/10 text-brand">{bundleLabel}</span>
+          <span className="px-2 py-1 text-xs bg-brand/10 text-brand" aria-hidden="true">{bundleLabel}</span>
         </div>
 
         <p className="text-sm text-text-secondary mb-4 leading-relaxed flex-1">
@@ -241,7 +242,7 @@ function BundleOverview({ products }: { products: Product[] }) {
                 <Cpu className="w-5 h-5" />
               </div>
               <h3 className="text-xl font-bold text-ink">专业产品</h3>
-              <span className="px-2 py-1 text-xs bg-accent-blue/10 text-accent-blue">独立部署</span>
+              <span className="px-2 py-1 text-xs bg-accent-blue-soft text-text-primary">独立部署</span>
             </div>
             <p className="text-sm text-text-secondary leading-relaxed mb-6">
               聚焦特定领域的高复杂度需求，以独立产品形态提供专业能力，满足安全与合规的严苛要求。