feat: Update About page content with new media, refactor BentoGrid layout, and optimize particle background performance and styling.

src/styles/components/BentoGrid.css

@@ -1,7 +1,7 @@
 .bento-grid-container {
     display: grid;
     grid-template-columns: repeat(4, 1fr);
-    grid-template-rows: repeat(2, 250px);
+    grid-auto-rows: 250px;
     gap: 20px;
     width: 100%;
     max-width: 1200px;