feat(site): redesign with product pages, ecosystem sections and pixel reveal

Add cli/code/office/platform/pricing pages, new home sections
(Ecosystem, FeatureGrid, Faq, WorkflowSteps, BottomCta, ProductEcosystem),
ScrollReveal and PixelTextReveal animation components, brand assets,
and expanded site-content.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

components/about/MissionSection.tsx

@@ -28,7 +28,7 @@ export default function MissionSection() {
               </div>
               <Link href="/contact" className="tertiary-button w-inline-block">
                 <div className="button-content">
-                  <div>申请试用</div>
+                  <div>联系我们</div>
                   <div className="button-icon-wrapper secondary">
                     <svg
                       xmlns="http://www.w3.org/2000/svg"