feat(docs): refactor homepage layouts and add HomeFeatures component

- Replace verbose inline HTML/CSS in multiple language homepages with reusable HomeFeatures component
- Simplify hero section taglines and action links across all language versions
- Add iOS/Apple style enhancements including glassmorphism effects and refined button animations
- Register HomeFeatures component globally in Vue app for consistent usage
- Remove redundant translation banners and GitHub star sections to streamline content

docs/.vitepress/theme/index.js

@@ -8,6 +8,7 @@ import { onMounted, watch, nextTick } from 'vue'
 import { useRoute, useData } from 'vitepress'
 import './style.css'
 import Layout from './Layout.vue'
+import HomeFeatures from './components/HomeFeatures.vue'
 import CategoryIndex from './components/CategoryIndex.vue'
 import ArticleGrid from './components/ArticleGrid.vue'
 import StepBar from './components/StepBar.vue'
@@ -270,6 +271,7 @@ export default {
   Layout,
   enhanceApp({ app }) {
     app.use(ElementPlus)
+    app.component('HomeFeatures', HomeFeatures)
     app.component('CategoryIndex', CategoryIndex)
     app.component('ArticleGrid', ArticleGrid)
     app.component('StepBar', StepBar)