docs(landing): Update Angular logo color

Author: immohammadjaved

projects/demo/public/favicon.ico

@@ -34,7 +34,7 @@ <h1 class="text-lg font-semibold theme-text-primary">&#64;slateui/theme</h1>
         <div class="text-center">
           <h2 id="hero-title" class="text-4xl sm:text-5xl lg:text-6xl font-bold theme-text-primary mb-6 tracking-tight">
             Modern Theme Management<br/>
-            for <span class="gradient-text">Angular</span>
+            for <span class="bg-gradient-to-r from-pink-600 to-purple-600 bg-clip-text text-transparent">Angular</span>
           </h2>
           <p class="text-lg sm:text-xl theme-text-secondary mb-12 max-w-3xl mx-auto leading-relaxed">
             Lightweight, feature-rich theme library with automatic dark mode detection,