diff --git a/docs/en/framework/ui/blazor/page-toolbar-extensions.md b/docs/en/framework/ui/blazor/page-toolbar-extensions.md
index dc0917fe8a..96c48b000d 100644
--- a/docs/en/framework/ui/blazor/page-toolbar-extensions.md
+++ b/docs/en/framework/ui/blazor/page-toolbar-extensions.md
@@ -60,7 +60,7 @@ protected override async ValueTask SetToolbarItemsAsync()
     {
         //TODO: Write your custom code
         return Task.CompletedTask;
-    }, MudBlazor.Icons.Material.Filled.FileUpload, MudBlazor.Color.Secondary);
+    }, MudBlazor.Icons.Material.Filled.Upload, MudBlazor.Color.Secondary);
 }
 ```
 
@@ -120,7 +120,7 @@ namespace MyCompanyName.MyProjectName.Blazor.Pages.Identity
             {
                 //TODO: Write your custom code
                 return Task.CompletedTask;
-            }, MudBlazor.Icons.Material.Filled.FileUpload, MudBlazor.Color.Secondary);
+            }, MudBlazor.Icons.Material.Filled.Upload, MudBlazor.Color.Secondary);
         }
     }
 }
diff --git a/docs/en/ui-themes/lepton-x/blazor.md b/docs/en/ui-themes/lepton-x/blazor.md
index 19ad552f91..07d07eea00 100644
--- a/docs/en/ui-themes/lepton-x/blazor.md
+++ b/docs/en/ui-themes/lepton-x/blazor.md
@@ -26,7 +26,7 @@ LeptonX theme is implemented and ready to use with ABP. No custom implementation
 > * `Volo.Abp.AspNetCore.Components.{Server,WebAssembly}.MudBlazorLeptonXTheme`
 > * `Volo.Abp.AspNetCore.Components.{Server,WebAssembly}.MudBlazorLeptonXTheme.Bundling`
 > * Module types: `Abp{...}MudBlazorLeptonXThemeModule`, `Abp{...}MudBlazorLeptonXThemeBundlingModule`
-> * Layout namespace: `Volo.Abp.AspNetCore.Components.{Server,WebAssembly}.MudBlazorLeptonXTheme.Themes.MudBlazorLeptonX`
+> * Layout components live under `Volo.Abp.AspNetCore.Components.{Web,Server,WebAssembly}.MudBlazorLeptonXTheme.Components.ApplicationLayout` (with `SideMenu`, `TopMenu`, and `PublicWebsiteLayout` sub-namespaces).
 
 {{end}}
 
diff --git a/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentParameterDto.cs b/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentParameterDto.cs
index 26d8e6aaa8..0c1df753c0 100644
--- a/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentParameterDto.cs
+++ b/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentParameterDto.cs
@@ -14,8 +14,8 @@ namespace Volo.Docs.Documents
         /// Conditional visibility: this parameter is shown only when the keyed parameter's
         /// current value is one of the listed values.
         /// Example: "DependsOn": { "UI": [ "Blazor", "BlazorServer", "BlazorWebApp" ] }
-        /// When null or empty the parameter is always shown.
+        /// An empty dictionary means the parameter is always shown.
         /// </summary>
-        public Dictionary<string, List<string>> DependsOn { get; set; }
+        public Dictionary<string, List<string>> DependsOn { get; set; } = new Dictionary<string, List<string>>();
     }
 }
\ No newline at end of file
diff --git a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
index c7a42b7e87..60dc0fd57f 100644
--- a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
+++ b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
@@ -474,7 +474,14 @@
             <div class="docs-content-field">
                 <div class="docs-text-field">
                     <div class="position-relative">
-                        @if (Model.DocumentPreferences != null && Model.DocumentPreferences.Parameters != null && Model.DocumentPreferences.Parameters.Any())
+                        @{
+                            // Filter the parameters that should actually be shown (after applying DependsOn rules)
+                            // before computing the grid layout, otherwise hidden parameters would still occupy a column slot.
+                            var visibleParameters = Model.DocumentPreferences?.Parameters?
+                                .Where(p => Model.IsParameterVisible(p))
+                                .ToList() ?? new List<DocumentParameterDto>();
+                        }
+                        @if (visibleParameters.Count > 0)
                         {
                             <div class="alert alert-primary alert-criteria">
                                 <abp-row>
@@ -488,10 +495,12 @@
                                 <abp-row class="gx-2">
                                     @{
                                         const int maxCellCount = 3;
-                                        var count = Model.DocumentPreferences.Parameters.Count;
+                                        var count = visibleParameters.Count;
                                         var rowCount = count / maxCellCount + (count % maxCellCount > 0 ? 1 : 0);
                                         var cellSize = 12 / (count > maxCellCount ? maxCellCount : count);
-                                        var latestCellSize = 12 / count - (rowCount - 1) * maxCellCount;
+                                        // Last row may have fewer items than maxCellCount; size them to fill the row width.
+                                        var lastRowCellCount = count - (rowCount - 1) * maxCellCount;
+                                        var latestCellSize = 12 / lastRowCellCount;
 
                                         string BuildParameterDivClass(int index)
                                         {
@@ -503,10 +512,9 @@
 
                                         for (var i = 0; i < count; ++i)
                                         {
-                                            var parameter = Model.DocumentPreferences.Parameters[i];
-                                            var hiddenStyle = Model.IsParameterVisible(parameter) ? null : "display:none;";
+                                            var parameter = visibleParameters[i];
 
-                                            <div class="@BuildParameterDivClass(i)" style="@hiddenStyle">
+                                            <div class="@BuildParameterDivClass(i)">
                                                 <div class="custom-input-group">
                                                     <span class="input-group-text" id="@("Section" + parameter.Name + "ComboboxAddonId")">@(parameter.DisplayName)</span>
                                                     <select class="doc-section-combobox form-select"
diff --git a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs
index 7dc12348b3..995b9e603f 100644
--- a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs
+++ b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs
@@ -95,22 +95,27 @@ namespace Volo.Docs.Pages.Documents.Project
             _renderedParameterNamesCache ??= (DocumentPreferences?.Parameters?.Select(p => p.Name).ToHashSet() ?? new HashSet<string>());
 
         public virtual bool IsParameterVisible(DocumentParameterDto parameter)
+        {
+            return IsParameterVisibleGiven(parameter, UserPreferences);
+        }
+
+        // Per-rule semantics for a (parameter, current selection) context:
+        //   - rule.Value == null              : malformed list, skip the rule (fail-open)
+        //   - key not in current document     : rule references an unknown parameter, skip (fail-open)
+        //   - rule.Value.Count == 0           : explicit empty allow-list, hide the parameter (author intent: "never show")
+        //   - selected value not in allow-list: hide
+        //   - selected value in allow-list    : pass this rule
+        protected virtual bool IsParameterVisibleGiven(DocumentParameterDto parameter, IReadOnlyDictionary<string, string> selectedValues)
         {
             if (parameter.DependsOn == null || parameter.DependsOn.Count == 0)
             {
                 return true;
             }
 
-            // Per-rule semantics:
-            //   - rule.Value == null            : malformed list, skip the rule (fail-open)
-            //   - key not in current document   : rule references an unknown parameter, skip (fail-open)
-            //   - rule.Value.Count == 0         : explicit empty allow-list, hide the parameter (author intent: "never show")
-            //   - current value not in allow-list: hide
-            //   - current value in allow-list   : pass this rule
             return parameter.DependsOn.All(rule =>
                 rule.Value == null || !RenderedParameterNames.Contains(rule.Key)
                 || (rule.Value.Count > 0
-                    && UserPreferences.TryGetValue(rule.Key, out var current)
+                    && selectedValues.TryGetValue(rule.Key, out var current)
                     && rule.Value.Contains(current)));
         }
 
@@ -872,13 +877,16 @@ namespace Volo.Docs.Pages.Documents.Project
         {
             if (!DocumentPreferences?.Parameters?.Any() ?? true)
             {
-                return; 
+                return;
             }
 
-            AlternativeOptionLinkQueries = CollectAlternativeOptionLinksRecursively();
+            AlternativeOptionLinkQueries = CollectAlternativeOptionLinksRecursively(0, new Dictionary<string, string>());
         }
 
-        private List<string> CollectAlternativeOptionLinksRecursively(int index = 0)
+        // Generates all parameter combinations as query strings, but skips parameters whose DependsOn rules
+        // aren't satisfied by the partially-built selection. This avoids producing nonsensical combinations
+        // (e.g. UI=MVC&BlazorUI=MudBlazor when BlazorUI depends on UI ∈ {Blazor, BlazorServer, BlazorWebApp}).
+        private List<string> CollectAlternativeOptionLinksRecursively(int index, Dictionary<string, string> selected)
         {
             if (index >= DocumentPreferences.Parameters.Count)
             {
@@ -886,13 +894,22 @@ namespace Volo.Docs.Pages.Documents.Project
             }
 
             var option = DocumentPreferences.Parameters[index];
+
+            // If this parameter is hidden in the current selection context, omit it from the query
+            // and continue with the next parameter (no Cartesian fan-out for this option).
+            if (!IsParameterVisibleGiven(option, selected))
+            {
+                return CollectAlternativeOptionLinksRecursively(index + 1, selected);
+            }
+
             var queries = new List<string>();
 
             foreach (var key in option.Values.Keys)
             {
-                var linkQuery = new StringBuilder($"{option.Name}={key}");
+                var linkQuery = $"{option.Name}={key}";
 
-                var restOfQueries = CollectAlternativeOptionLinksRecursively(index + 1);
+                var nextSelected = new Dictionary<string, string>(selected) { [option.Name] = key };
+                var restOfQueries = CollectAlternativeOptionLinksRecursively(index + 1, nextSelected);
 
                 if (restOfQueries.Any())
                 {
@@ -903,7 +920,7 @@ namespace Volo.Docs.Pages.Documents.Project
                 }
                 else
                 {
-                    queries.Add($"{linkQuery}");
+                    queries.Add(linkQuery);
                 }
             }