Set ultrawide fish-eye container width to 1920px.

Widen centered layout on 21:9 displays from 1600 to 1920 while keeping normal screens unchanged.

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

lib/common/static/instance_page.css

@@ -165,11 +165,11 @@
             .panel-scroll,.pos-list{max-height:420px}
             .records-card .table-wrap{max-height:620px;overflow:auto}
         }
-        /* 带鱼屏(宽高比≥21:9):整页固定 1600 居中;不依赖 2000px 视口(避免 Win 缩放后失效) */
+        /* 带鱼屏(宽高比≥21:9):整页固定 1920 居中;不依赖视口宽度(避免 Win 缩放后失效) */
         @media (min-aspect-ratio: 21/9) {
             .container{
                 width:100%;
-                max-width:min(1600px, calc(100vw - 24px));
+                max-width:min(1920px, calc(100vw - 24px));
                 margin-left:auto;
                 margin-right:auto;
             }

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=20">
+    <link rel="stylesheet" href="/static/instance_page.css?v=21">
     <link rel="stylesheet" href="/static/instance_theme.css?v=124">
     <script src="/static/account_risk_badge.js?v=4"></script>
     <script src="/static/open_submit_gate.js?v=1"></script>

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=20">
+    <link rel="stylesheet" href="/static/instance_page.css?v=21">
     <link rel="stylesheet" href="/static/instance_theme.css?v=118">
 
 </head>