Radio show website: Full Astro build with 194 episodes imported

Complete website for The Computer Guru Show (radio.azcomputerguru.com):
- Astro 6.0.4 static site with React islands
- 194 episodes imported from gurushow.com RSS feed
- Dark/light mode HSL design system
- Persistent audio player with session persistence
- Episode archive with search and season filtering
- Home page with animated hero, stats, latest episodes
- All pages: About, Subscribe, Community, Live, Contact, Blog, 404
- Podcast RSS feed with iTunes namespace
- Session log updated

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

projects/radio-show/website/src/pages/404.astro

@@ -0,0 +1,56 @@
+---
+import BaseLayout from '../layouts/BaseLayout.astro';
+---
+
+<BaseLayout title="Page Not Found" description="The page you are looking for could not be found.">
+  <section class="not-found">
+    <div class="container">
+      <div class="not-found__content fade-in">
+        <span class="not-found__code">404</span>
+        <h1 class="not-found__title">Page Not Found</h1>
+        <p class="not-found__desc">
+          The page you are looking for does not exist or has been moved.
+        </p>
+        <a href="/" class="btn btn--primary">Go Home</a>
+      </div>
+    </div>
+  </section>
+</BaseLayout>
+
+<style>
+  .not-found {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    min-height: 60vh;
+    text-align: center;
+  }
+  .not-found__content {
+    max-width: 480px;
+  }
+  .not-found__code {
+    display: block;
+    font-size: 8rem;
+    font-weight: 800;
+    line-height: 1;
+    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
+    -webkit-background-clip: text;
+    background-clip: text;
+    -webkit-text-fill-color: transparent;
+    margin-bottom: var(--space-4);
+  }
+  .not-found__title {
+    font-size: var(--text-2xl);
+    margin-bottom: var(--space-4);
+  }
+  .not-found__desc {
+    color: var(--color-text-secondary);
+    margin-bottom: var(--space-8);
+  }
+
+  @media (max-width: 768px) {
+    .not-found__code {
+      font-size: 5rem;
+    }
+  }
+</style>