fix: features page use .filter-bar class instead of inline style

public/js/pages/features.js

@@ -17,7 +17,7 @@ const FeaturesPage = {
 
   renderLayout() {
     const ct = document.getElementById('page-content');
-    ct.innerHTML = `<div style="display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap">
+    ct.innerHTML = `<div class="filter-bar">
       <select id="feat-group" onchange="FeaturesPage.setFilter()"><option value="">全部分组</option></select>
       <select id="feat-server" onchange="FeaturesPage.setFilter()"><option value="">全部子服</option></select>
       <select id="feat-status" onchange="FeaturesPage.setFilter()"><option value="all">全部状态</option><option value="pending">待定</option><option value="planned">计划中</option><option value="done">已完成</option></select>