Add Heguang Tongkun landing page with light theme and refined UI.

Ship the full Vite/React marketing site with white-background styling, softer gradients, rounded typography, and section layout updates from the design pass.

Co-authored-by: Cursor <cursoragent@cursor.com>

package.json

@@ -0,0 +1,29 @@
+{
+  "name": "heguang-landing",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "clsx": "^2.1.1",
+    "framer-motion": "^11.11.9",
+    "lucide-react": "^0.454.0",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@types/node": "^20.16.13",
+    "@types/react": "^18.3.12",
+    "@types/react-dom": "^18.3.1",
+    "@vitejs/plugin-react": "^4.3.3",
+    "autoprefixer": "^10.4.20",
+    "postcss": "^8.4.47",
+    "tailwindcss": "^3.4.14",
+    "typescript": "^5.6.3",
+    "vite": "^5.4.10"
+  }
+}