Website: 16-bit pixel-art rebuild with a live Three.js office, downloads from Gitea v1.5.1

- Title screen over a real-time voxel office rendered at low resolution and quantized to a rotating 32-colour palette with Bayer dithering; day part and season re-light the scene and every surface.
- 16-bit UI kit: name-plate dialogs, menu cursor, inventory, XP bar, badges, NPC speech, GAME OVER with CONTINUE, hand-placed 12x12 icons, Fusion Pixel font (Latin subset preloaded).
- Sections as a game: quest log (onboarding), character select (AI CEO / AI Co-Founder), inventory (features), party roster (providers), live download XP, save point (all v1.5.1 builds), FAQ as NPC dialog, credits.
- Downloads and source point to the Gitea release; the download function only redirects to git.zacharyzhang.com.
- Tailwind and the old components removed; unit tests for platform/downloads, rewritten e2e suite.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

landing/components/sections/section-header.tsx

@@ -0,0 +1,17 @@
+import styles from "./section.module.css";
+
+export function SectionHeader({ id, stage, title, intro }: { id: string; stage: string; title: string; intro?: string }) {
+  return (
+    <header className={styles.header}>
+      <div className={styles.banner}>
+        <span className={styles.cloud} aria-hidden="true" />
+        <span className={`${styles.cloud} ${styles.cloudFar}`} aria-hidden="true" />
+        <p className={styles.stage}>{stage}</p>
+      </div>
+      <h2 id={id} className={styles.title}>
+        {title}
+      </h2>
+      {intro ? <p className={styles.intro}>{intro}</p> : null}
+    </header>
+  );
+}