diff --git a/admin-spa/src/routes/Help/index.tsx b/admin-spa/src/routes/Help/index.tsx
index e5bbb39..a4ef859 100644
--- a/admin-spa/src/routes/Help/index.tsx
+++ b/admin-spa/src/routes/Help/index.tsx
@@ -3,6 +3,7 @@ import { useSearchParams } from 'react-router-dom';
 import { Book, ChevronRight, FileText, Settings, Layers, Puzzle, Menu, X } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { cn } from '@/lib/utils';
+import { useApp } from '@/contexts/AppContext';
 import DocContent from './DocContent';
 import type { DocSection } from './types';
 
@@ -21,8 +22,22 @@ export default function Help() {
     const [expandedSections, setExpandedSections] = useState<Record<string, boolean>>({});
     const [sidebarOpen, setSidebarOpen] = useState(false);
 
+    const { isStandalone } = useApp();
+
     const currentSlug = searchParams.get('doc') || 'getting-started';
 
+    // Calculate sticky top position based on mode
+    // Standalone/fullscreen mode: top-16 (below 64px header)
+    // WP Admin mode: top-[calc(7rem+32px)] (header + topnav + wp-admin bar)
+    const sidebarTopClass = isStandalone
+        ? 'top-16'
+        : 'top-[calc(7rem+32px)]';
+
+    // Height calculation: full height minus header
+    const sidebarHeightClass = isStandalone
+        ? 'h-[calc(100vh-64px)]'
+        : 'h-[calc(100vh-7rem-32px)]';
+
     // Fetch documentation registry
     useEffect(() => {
         const fetchDocs = async () => {
@@ -64,32 +79,35 @@ export default function Help() {
 
     const selectDoc = (slug: string) => {
         setSearchParams({ doc: slug });
-        setSidebarOpen(false); // Close mobile sidebar
+        setSidebarOpen(false);
     };
 
     const isActive = (slug: string) => slug === currentSlug;
 
     return (
-        <div className="flex h-[calc(100vh-64px)] bg-background">
+        <div className="flex min-h-0">
             {/* Mobile menu button */}
             <Button
                 variant="ghost"
                 size="icon"
-                className="lg:hidden fixed bottom-4 right-4 z-50 bg-primary text-primary-foreground shadow-lg rounded-full w-12 h-12"
+                className="lg:hidden fixed bottom-20 right-4 z-50 bg-primary text-primary-foreground shadow-lg rounded-full w-12 h-12"
                 onClick={() => setSidebarOpen(!sidebarOpen)}
             >
                 {sidebarOpen ? <X className="w-5 h-5" /> : <Menu className="w-5 h-5" />}
             </Button>
 
-            {/* Sidebar */}
+            {/* Sidebar - sticky, positioned below header */}
             <aside
                 className={cn(
-                    "w-72 border-r bg-muted/30 flex-shrink-0 transition-transform duration-300",
-                    "fixed lg:relative inset-y-0 left-0 z-40 lg:translate-x-0",
-                    sidebarOpen ? "translate-x-0" : "-translate-x-full"
+                    "w-72 border-r bg-muted/30 flex-shrink-0",
+                    "fixed lg:sticky inset-y-0 left-0 z-40",
+                    sidebarTopClass,
+                    sidebarHeightClass,
+                    "lg:block overflow-y-auto",
+                    sidebarOpen ? "block" : "hidden lg:block"
                 )}
             >
-                <div className="p-4 border-b">
+                <div className="p-4 border-b bg-muted/30">
                     <h2 className="text-lg font-semibold flex items-center gap-2">
                         <Book className="w-5 h-5" />
                         Documentation
@@ -97,52 +115,50 @@ export default function Help() {
                     <p className="text-sm text-muted-foreground">Help & Guides</p>
                 </div>
 
-                <div className="h-[calc(100vh-180px)] overflow-y-auto">
-                    <nav className="p-2">
-                        {loading ? (
-                            <div className="p-4 text-sm text-muted-foreground">Loading...</div>
-                        ) : sections.length === 0 ? (
-                            <div className="p-4 text-sm text-muted-foreground">No documentation available</div>
-                        ) : (
-                            sections.map((section) => (
-                                <div key={section.key} className="mb-2">
-                                    <button
-                                        onClick={() => toggleSection(section.key)}
-                                        className="w-full flex items-center gap-2 px-3 py-2 text-sm font-medium text-foreground hover:bg-muted rounded-md"
-                                    >
-                                        {iconMap[section.icon] || <FileText className="w-4 h-4" />}
-                                        <span className="flex-1 text-left">{section.label}</span>
-                                        <ChevronRight
-                                            className={cn(
-                                                "w-4 h-4 transition-transform",
-                                                expandedSections[section.key] && "rotate-90"
-                                            )}
-                                        />
-                                    </button>
+                <nav className="p-2">
+                    {loading ? (
+                        <div className="p-4 text-sm text-muted-foreground">Loading...</div>
+                    ) : sections.length === 0 ? (
+                        <div className="p-4 text-sm text-muted-foreground">No documentation available</div>
+                    ) : (
+                        sections.map((section) => (
+                            <div key={section.key} className="mb-2">
+                                <button
+                                    onClick={() => toggleSection(section.key)}
+                                    className="w-full flex items-center gap-2 px-3 py-2 text-sm font-medium text-foreground hover:bg-muted rounded-md"
+                                >
+                                    {iconMap[section.icon] || <FileText className="w-4 h-4" />}
+                                    <span className="flex-1 text-left">{section.label}</span>
+                                    <ChevronRight
+                                        className={cn(
+                                            "w-4 h-4 transition-transform",
+                                            expandedSections[section.key] && "rotate-90"
+                                        )}
+                                    />
+                                </button>
 
-                                    {expandedSections[section.key] && (
-                                        <div className="ml-4 mt-1 space-y-1">
-                                            {section.items.map((item) => (
-                                                <button
-                                                    key={item.slug}
-                                                    onClick={() => selectDoc(item.slug)}
-                                                    className={cn(
-                                                        "w-full text-left px-3 py-1.5 text-sm rounded-md transition-colors",
-                                                        isActive(item.slug)
-                                                            ? "bg-primary text-primary-foreground"
-                                                            : "text-muted-foreground hover:bg-muted hover:text-foreground"
-                                                    )}
-                                                >
-                                                    {item.title}
-                                                </button>
-                                            ))}
-                                        </div>
-                                    )}
-                                </div>
-                            ))
-                        )}
-                    </nav>
-                </div>
+                                {expandedSections[section.key] && (
+                                    <div className="ml-4 mt-1 space-y-1">
+                                        {section.items.map((item) => (
+                                            <button
+                                                key={item.slug}
+                                                onClick={() => selectDoc(item.slug)}
+                                                className={cn(
+                                                    "w-full text-left px-3 py-1.5 text-sm rounded-md transition-colors",
+                                                    isActive(item.slug)
+                                                        ? "bg-primary text-primary-foreground"
+                                                        : "text-muted-foreground hover:bg-muted hover:text-foreground"
+                                                )}
+                                            >
+                                                {item.title}
+                                            </button>
+                                        ))}
+                                    </div>
+                                )}
+                            </div>
+                        ))
+                    )}
+                </nav>
             </aside>
 
             {/* Backdrop for mobile */}
@@ -153,9 +169,9 @@ export default function Help() {
                 />
             )}
 
-            {/* Main content */}
-            <main className="flex-1 overflow-y-auto">
-                <div className="max-w-4xl mx-auto p-6 lg:p-10">
+            {/* Main content - uses page scroll, not internal overflow */}
+            <main className="flex-1 min-w-0">
+                <div className="max-w-4xl mx-auto py-6 px-6 lg:px-10">
                     <DocContent slug={currentSlug} />
                 </div>
             </main>