feat: Implement marketing page layout, core sections, and shared UI components.

src/components/marketing/FAQ.tsx

@@ -9,7 +9,7 @@ interface FAQProps {
 
 export const FAQ: React.FC<FAQProps> = ({ t }) => {
   const [openIndex, setOpenIndex] = useState<number | null>(null);
-  
+
   const questions = [
     'account',
     'static_vs_dynamic',
@@ -40,6 +40,7 @@ export const FAQ: React.FC<FAQProps> = ({ t }) => {
                     fill="none"
                     stroke="currentColor"
                     viewBox="0 0 24 24"
+                    aria-hidden="true"
                   >
                     <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
                   </svg>