diff --git a/lib/common/static/instance_page.css b/lib/common/static/instance_page.css
index c0db29f..4a35c40 100644
--- a/lib/common/static/instance_page.css
+++ b/lib/common/static/instance_page.css
@@ -3,8 +3,9 @@
 .order-entry-model-row select.order-entry-category{min-width:4.8em;max-width:6.5em}
 .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 20px}
-        .container{width:100%;max-width:min(1440px,94vw);margin:0 auto;padding:0 clamp(8px,1.5vw,20px)}
+        body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#0b0d14;color:#eaeaea;padding:14px 12px}
+        /* 1920 左右用满:约 96vw / 1840,两侧留白更小 */
+        .container{width:100%;max-width:min(1840px,96vw);margin:0 auto;padding:0 clamp(6px,1vw,14px)}
         .header{display:flex;flex-direction:column;align-items:center;gap:8px;margin-bottom:12px}
         .header h1{font-size:1.75rem;color:#dbe4ff;text-align:center;line-height:1.25}
         .exchange-tag{font-size:.82rem;font-weight:600;color:#b8f5d0;background:#14241e;border:1px solid #2d6a4f;padding:5px 14px;border-radius:999px;letter-spacing:.06em}
@@ -162,14 +163,14 @@
             .records-card .table-wrap{max-height:620px;overflow:auto}
         }
         @media (min-width: 2200px){
-            .container{max-width:min(1720px,90vw)}
+            .container{max-width:min(2040px,96vw)}
         }
         @media (min-width: 2560px){
-            .container{max-width:min(1860px,88vw)}
+            .container{max-width:min(2360px,95vw)}
             .dual-panel-grid{gap:18px}
         }
         @media (min-width: 3000px){
-            .container{max-width:min(1980px,86vw)}
+            .container{max-width:min(2800px,94vw)}
             .pos-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
         }
         @media (max-width: 1100px){
diff --git a/lib/instance/templates/embed_shell.html b/lib/instance/templates/embed_shell.html
index b1f4527..457b0c3 100644
--- a/lib/instance/templates/embed_shell.html
+++ b/lib/instance/templates/embed_shell.html
@@ -7,7 +7,7 @@
     <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=13">
+    <link rel="stylesheet" href="/static/instance_page.css?v=14">
     <link rel="stylesheet" href="/static/instance_theme.css?v=117">
     <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 f353bea..30c184f 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=13">
+    <link rel="stylesheet" href="/static/instance_page.css?v=14">
     <link rel="stylesheet" href="/static/instance_theme.css?v=117">
 
 </head>