工作台改回 1800 居中留白，取消带鱼屏全宽铺满。

Co-authored-by: Cursor <cursoragent@cursor.com>

static/hub.css

@@ -70,18 +70,16 @@ a:hover { color: #7dd3fc; }
 }
 
 .main { padding: 16px; max-width: 1200px; margin: 0 auto; }
-/* 总览等保持原宽;工作台带鱼屏/超宽铺满可用区域 */
-body.page-dashboard .main {
+/* 总览 / 工作台:锁定 1800,超宽两侧留白 */
+body.page-dashboard .main,
+body.page-desk .main {
   max-width: 1800px;
   width: 100%;
   margin: 0 auto;
   padding: 12px clamp(16px, 3vw, 48px) 20px;
 }
 body.page-desk .main {
-  max-width: none;
-  width: 100%;
-  margin: 0;
-  padding: 10px 12px 14px;
+  padding: 10px clamp(12px, 2vw, 32px) 14px;
 }
 body.page-login {
   min-height: 100vh;
@@ -998,16 +996,12 @@ input.readonly {
   .desk-side-toggle--bar { display: none !important; }
 }
 @media (min-width: 2000px) {
-  body.page-dashboard .main {
+  body.page-dashboard .main,
+  body.page-desk .main {
     max-width: 1800px;
     padding-left: clamp(32px, 6vw, 96px);
     padding-right: clamp(32px, 6vw, 96px);
   }
-  body.page-desk .main {
-    max-width: none;
-    padding-left: 12px;
-    padding-right: 12px;
-  }
 }
 
 .cond-head { justify-content: space-between; align-items: flex-start; }