diff --git a/lib/common/static/instance_page.css b/lib/common/static/instance_page.css
index 8ecde14..69b8526 100644
--- a/lib/common/static/instance_page.css
+++ b/lib/common/static/instance_page.css
@@ -4,12 +4,12 @@
 .order-entry-model-row select.order-entry-model-sub{min-width:7em;max-width:10rem}
 .order-leverage-hint{font-size:.78rem;color:#cfd3ef;white-space:nowrap;align-self:center}
         body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#0b0d14;color:#eaeaea;padding:14px 12px}
-        /* 内容区锁定 1800,超宽两侧留白 */
-        .container{width:100%;max-width:min(1800px,96vw);margin:0 auto;padding:0 clamp(6px,1vw,14px)}
+        /* 普通屏:铺满可用宽度;带鱼屏再锁 1800(见下方 media) */
+        .container{width:100%;max-width:none;margin:0 auto;padding:0 clamp(6px,1vw,14px)}
         body[data-embed-shell="1"] .container{
-            max-width:min(1800px,96vw);
+            max-width:none;
             width:100%;
-            margin:0 auto;
+            margin:0;
             padding:0 clamp(6px,1vw,14px);
         }
         .header{display:flex;flex-direction:column;align-items:center;gap:8px;margin-bottom:12px}
@@ -174,7 +174,7 @@
             .panel-scroll,.pos-list{max-height:420px}
             .records-card .table-wrap{max-height:620px;overflow:auto}
         }
-        /* 带鱼屏(宽高比≥21:9):锁定 1800 居中,两侧留白 */
+        /* 带鱼屏:独立打开与中控内嵌内容均锁 1800 居中留白;工作台外壳由中控全屏 */
         @media (min-aspect-ratio: 21/9) {
             .container,
             body[data-embed-shell="1"] .container{
diff --git a/lib/instance/templates/embed_shell.html b/lib/instance/templates/embed_shell.html
index 7b53101..ad90fca 100644
--- a/lib/instance/templates/embed_shell.html
+++ b/lib/instance/templates/embed_shell.html
@@ -8,7 +8,7 @@
     <script src="/static/autofill_guard.js?v=1"></script>
     <link rel="stylesheet" href="/static/instance_theme_early.css?v=4">
     <link rel="stylesheet" href="/static/account_risk_badge.css?v=4">
-    <link rel="stylesheet" href="/static/instance_page.css?v=24">
+    <link rel="stylesheet" href="/static/instance_page.css?v=25">
     <link rel="stylesheet" href="/static/instance_theme.css?v=126">
     <script src="/static/account_risk_badge.js?v=4"></script>
     <script src="/static/open_submit_gate.js?v=1"></script>
diff --git a/lib/instance/templates/index.html b/lib/instance/templates/index.html
index 6812a4d..c632560 100644
--- a/lib/instance/templates/index.html
+++ b/lib/instance/templates/index.html
@@ -18,7 +18,7 @@
     <link rel="apple-touch-icon" href="/static/icons/apple-touch-icon.png">
     <link rel="manifest" href="/static/icons/manifest.webmanifest">
     <title>{{ pwa_app_name }}</title>
-    <link rel="stylesheet" href="/static/instance_page.css?v=24">
+    <link rel="stylesheet" href="/static/instance_page.css?v=25">
     <link rel="stylesheet" href="/static/instance_theme.css?v=126">
 
 </head>