랜딩 페이지: D3RO 브랜드 프로모션 사이트 + GitHub Pages 배포

- Vite + React 19 + Tailwind CSS
- 4가지 디자인 레퍼런스 통합 (CRT 스크린, 크로스헤어, 노이즈, 인스트루먼트)
- 섹션 9개: Hero, Features, HowItWorks, Privacy, Pricing, FAQ, CTA, Header, Footer
- 재사용 컴포넌트 8개 (Badge, Container, InstrumentCard, GlowButton 등)
- i18n 10개 국어 (en/ko/ja/zh/es/fr/de/pt/ru/vi)
- GitHub Pages 자동 배포 워크플로우

.github/workflows/deploy-site.yml

@@ -0,0 +1,50 @@
+name: Deploy Landing Page
+
+on:
+  push:
+    branches: [main]
+    paths: ['site/**']
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: site/package-lock.json
+
+      - name: Install dependencies
+        working-directory: site
+        run: npm ci
+
+      - name: Build
+        working-directory: site
+        run: npm run build
+
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: site/dist
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v4