fix: align homepage feature checklist

Wrapped feature rows were centered independently, which shifted the lower-right item away from the column above it. The Chinese homepage now uses a shared two-column grid and collapses to one aligned column on narrow screens.

Release note: 官网首页特性列表现在按列对齐，桌面与移动端布局更整齐。

sites/styles.css

@@ -586,6 +586,11 @@ p {
   list-style: none;
 }
 
+.hero-facts--aligned {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, max-content));
+}
+
 .hero-facts li {
   display: flex;
   align-items: center;
@@ -1839,6 +1844,10 @@ p {
     gap: var(--space-2);
   }
 
+  .hero-facts--aligned {
+    grid-template-columns: minmax(0, max-content);
+  }
+
   .product-stage {
     min-height: 365px;
     margin-top: var(--space-4);