feat: update Home component layout and styles, add hero background images, and enhance nav value section

public/favicon.svg

@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+  <defs>
+    <linearGradient id="grad1" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#2563eb;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#1d4ed8;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+
+  <!-- Background circle -->
+  <circle cx="16" cy="16" r="15" fill="url(#grad1)" stroke="#1e293b" stroke-width="1"/>
+
+  <!-- Letter V -->
+  <path d="M8 10 L12 22 L16 10 L20 22 L24 10"
+        stroke="white"
+        stroke-width="2.5"
+        stroke-linecap="round"
+        stroke-linejoin="round"
+        fill="none"/>
+
+</svg>