refactor: 가격표 섹션 히어로 아래로 이동 및 탭 스타일 통일

- 가격표 섹션을 페이지 하단에서 히어로 바로 아래로 이동
- 상단 패딩 축소 (py-24 → pt-12 pb-24)
- 서브탭(서울/글로벌 타입) 스타일을 메인탭과 동일하게 통일
- Pages Functions API 프록시 추가 (functions/)
- wrangler.toml 및 TypeScript 설정 추가

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

functions/README.md

@@ -0,0 +1,88 @@
+# Cloudflare Pages Functions
+
+API proxy endpoints for cloud-instances-api Worker.
+
+## Endpoints
+
+| Method | Path | Description |
+|--------|------|-------------|
+| GET | `/api/health` | Health check |
+| GET | `/api/instances` | Query VM instances with filters |
+| POST | `/api/recommend` | Tech stack recommendations |
+
+## Configuration
+
+### Environment Variables
+
+Set in Cloudflare Pages dashboard or via CLI:
+
+```bash
+wrangler pages secret put WORKER_API_KEY
+```
+
+**Required Secrets:**
+- `WORKER_API_KEY` - API key for Worker authentication
+
+**Configured Variables (wrangler.toml):**
+- `WORKER_API_URL` - Worker API base URL
+
+## Local Development
+
+1. Install dependencies:
+```bash
+npm install
+```
+
+2. Create `.env` file:
+```bash
+WORKER_API_KEY=your-api-key-here
+```
+
+3. Run local dev server:
+```bash
+npx wrangler pages dev . --port 8788
+```
+
+## Deployment
+
+```bash
+wrangler pages deploy . --project-name anvil-hosting
+```
+
+## CORS Configuration
+
+All endpoints allow requests from:
+- Origin: `https://hosting.anvil.it.com`
+- Methods: `GET, POST, OPTIONS`
+- Headers: `Content-Type`
+
+## Architecture
+
+```
+Client Request
+  ↓
+/api/{endpoint} (Pages Function)
+  ↓
+functions/_shared/proxy.ts (CORS + Auth)
+  ↓
+cloud-instances-api.kappa-d8e.workers.dev (Worker)
+  ↓
+Response with CORS headers
+```
+
+## Error Handling
+
+All errors return JSON with CORS headers:
+
+```json
+{
+  "success": false,
+  "error": "Error message",
+  "details": "Optional error details"
+}
+```
+
+Status codes:
+- `400` - Invalid request
+- `500` - Internal error
+- `503` - Worker API unavailable