feat(i18n): add zh/en locale switching

components/Footer.tsx

@@ -2,10 +2,14 @@
 
 import Image from "next/image"
 import Link from "next/link"
+import { useTranslations } from "next-intl"
 import NewsletterForm from "@/components/NewsletterForm"
-import { CONTACT_CHANNELS, FOOTER_GROUPS, SITE_BRAND, SITE_DESCRIPTION } from "@/lib/site-content"
+import { CONTACT_CHANNELS, FOOTER_GROUPS } from "@/lib/site-content"
 
 export default function Footer() {
+  const t = useTranslations("footer")
+  const site = useTranslations("site")
+
   return (
     <footer className="footer-wrapper">
       <div data-w-id="f1ff1ac2-5ccd-56f8-612a-0570791caa19" className="footer-main-section">
@@ -18,7 +22,7 @@ export default function Footer() {
             </div>
             <Link href="/contact" className="footer-button w-inline-block">
               <div className="button-content footer">
-                <div>申请试用</div>
+                <div>{t("applyTrial")}</div>
               </div>
               <div className="button-icon-wrapper footer primary">
                 <svg xmlns="http://www.w3.org/2000/svg" width="100%" viewBox="0 0 17 17" fill="none" className="squared-icon">
@@ -43,9 +47,9 @@ export default function Footer() {
           <div className="w-layout-blockcontainer container-default w-container">
             <div className="w-layout-grid footer-middle-content">
               <div className="inner-container _355px _100-tablet">
-                <div className="display-6 medium text-titles-dm">{SITE_BRAND}</div>
+                <div className="display-6 medium text-titles-dm">{site("brand")}</div>
                 <div className="mg-top-8-px">
-                  <p className="text-color-neutral-400 mg-bottom-20px">{SITE_DESCRIPTION}</p>
+                  <p className="text-color-neutral-400 mg-bottom-20px">{site("description")}</p>
                 </div>
                 <NewsletterForm variant="dark" />
               </div>
@@ -113,10 +117,10 @@ export default function Footer() {
                 </path>
               </svg>
             </div>
-            <div>了解产品定位</div>
+            <div>{t("learnPositioning")}</div>
           </Link>
           <p className="text-color-neutral-500">
-            Copyright © 2026 DAL Code by DeepAILab. 官网基于现有 Next.js 骨架持续演进。
+            {t("copyright")}
           </p>
         </div>
       </div>