Feat: 更新 UI 细节

页眉样式修改，增加社交媒体按钮
调整卡片内间距和整体宽度
修复手机版文章卡片插图展示异常

app/routes/gallery.tsx

@@ -81,7 +81,7 @@ export default function Gallery({ loaderData }: Route.ComponentProps) {
             role="button"
             tabIndex={0}
             onKeyDown={() => {}}
-            className="relative bg-white rounded-xl overflow-hidden border-4 border-transparent hover:border-pink-400 transition-colors border-b-4 border-b-cyan-200 group"
+            className="relative bg-white rounded-xl overflow-hidden border-4 border-transparent hover:border-pink-400 transition-colors border-b-4 border-b-cyan-200 group cursor-pointer"
             onClick={() => open(index)}
           >
             <img className={styles.image} src={item.thumb_url} alt={item.title} loading="lazy" />