diff --git a/assets/css/routes/user-home.css b/assets/css/routes/user-home.css
index fcd87113..7e61a530 100644
--- a/assets/css/routes/user-home.css
+++ b/assets/css/routes/user-home.css
@@ -424,6 +424,7 @@
   }
 
   .aksrt-user-home #panel-posts .aksrt-user-home__post-list > .posts-item {
+    width: auto; /* 覆盖 vendored site-layout-1 的 width: calc(50% - 16px)，让卡片填满网格单元 */
     margin: 0 !important; /* 抵消 vendored .posts-row > * 的 8px !important 边距 */
   }
 }
diff --git a/tests/widget-system/post-visual-contract.test.cjs b/tests/widget-system/post-visual-contract.test.cjs
index 3b4c3a93..244d3507 100644
--- a/tests/widget-system/post-visual-contract.test.cjs
+++ b/tests/widget-system/post-visual-contract.test.cjs
@@ -323,7 +323,7 @@ test('profile routes load versioned leaf styles and keep dialogs hidden initiall
   assert.match(userHomeCss, /\.aksrt-profile-details-modal\[hidden\]\s*\{\s*display:\s*none\s*!important;\s*\}/);
   assert.match(userHomeCss, /\.aksrt-user-home #panel-posts \.aksrt-user-home__post-list \.posts-item\s*\{[^}]*background:\s*transparent;[^}]*box-shadow:\s*none;/);
   assert.match(userHomeCss, /@media \(min-width: 992px\)\s*\{[\s\S]*?\.aksrt-user-home #panel-posts \.aksrt-user-home__post-list\s*\{[^}]*display:\s*grid;[^}]*grid-template-columns:\s*repeat\(2,\s*minmax\(0,\s*1fr\)\);/);
-  assert.match(userHomeCss, /@media \(min-width: 992px\)\s*\{[\s\S]*?\.aksrt-user-home #panel-posts \.aksrt-user-home__post-list > \.posts-item\s*\{[^}]*margin:\s*0 !important;/);
+  assert.match(userHomeCss, /@media \(min-width: 992px\)\s*\{[\s\S]*?\.aksrt-user-home #panel-posts \.aksrt-user-home__post-list > \.posts-item\s*\{[^}]*width:\s*auto;[^}]*margin:\s*0 !important;/);
   assert.match(userHomeCss, /@media \(max-width: 767px\)\s*\{[\s\S]*?\.aksrt-user-home #panel-posts \.aksrt-user-home__post-list \.posts-item\s*\{[^}]*padding:\s*10px 0;/);
   assert.match(profileLayoutCss, /\.aksrt-cover-menu__panel\[hidden\]\s*\{\s*display:\s*none\s*!important;\s*\}/);
   assert.match(profileLayoutCss, /#aksrt-bg-file-input\[hidden\],[\s\S]*?#aksrt-avatar-file-input\[hidden\][\s\S]*?display:\s*none\s*!important;/);