feat: re-designed search UI and new FAQ and Q&A blocks

- Add search-hero block with ==highlight== syntax and gradient mesh backgrounds
- Add knowledge-categories block with dynamic Hugo taxonomy counts
- Add trending-questions block with content-driven trending system
- Add FAQ/questions layouts with Alpine.js accordions and search integration
- Redesign search modal using Pagefind headless API to create custom UI design
- Add gradient mesh background system (orbs, waves, dots, grid) to framework
- Add i18n support for new blocks
- Fix video backgrounds regression in parse_block_v3.html
- Add QAPage/FAQPage structured data for SEO optimization

modules/blox-tailwind/assets/css/framework/base.css

@@ -11,6 +11,39 @@
   }
 }
 
+/* Gradient Mesh Animations */
+@keyframes float {
+  0%, 100% {
+    transform: translateY(0) translateX(0);
+  }
+  25% {
+    transform: translateY(-20px) translateX(10px);
+  }
+  50% {
+    transform: translateY(-10px) translateX(-10px);
+  }
+  75% {
+    transform: translateY(-30px) translateX(5px);
+  }
+}
+
+@keyframes rotate-slow {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.animate-float {
+  animation: float 8s ease-in-out infinite;
+}
+
+.animate-rotate-slow {
+  animation: rotate-slow 20s linear infinite;
+}
+
 /* Custom utilities and components */
 @utility task-list {
   list-style: none;