diff --git a/frontend/src/app/recollections/FlippingCardView.tsx b/frontend/src/app/recollections/FlippingCardView.tsx
deleted file mode 100644
index 37d9c47..0000000
--- a/frontend/src/app/recollections/FlippingCardView.tsx
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * Recollection view switcher: Logos or Flux based on pathname.
- * Single container, conditional render — only the active view is mounted (no CSS flip).
- */
-
-import React from 'react'
-import { useLocation, useParams } from 'react-router-dom'
-import { LogosPage } from './logos/LogosPage'
-import { FluxRoute } from './flux/FluxRoute'
-
-export function FlippingCardView() {
-  const { pathname } = useLocation()
-  const { recollectionId } = useParams<{ recollectionId: string }>()
-  const isFlux = pathname.endsWith('/flux')
-
-  return (
-    <div className="flex min-h-0 flex-1 flex-col overflow-hidden">
-      {isFlux ? (
-        recollectionId ? (
-          <FluxRoute />
-        ) : null
-      ) : (
-        <LogosPage />
-      )}
-    </div>
-  )
-}
diff --git a/frontend/src/app/recollections/RecollectionLayout.tsx b/frontend/src/app/recollections/RecollectionLayout.tsx
index bbbe184..ca0868c 100644
--- a/frontend/src/app/recollections/RecollectionLayout.tsx
+++ b/frontend/src/app/recollections/RecollectionLayout.tsx
@@ -1,15 +1,14 @@
 /**
- * Layout for a single recollection: shared menubar and flipping card (Logos front / Flux back).
+ * Layout for a single recollection: shared menubar and nested routes for Logos / Katalogos / Flux.
  */
 
 import React, { useEffect } from 'react'
-import { Link, useParams } from 'react-router-dom'
+import { Link, Outlet, useParams } from 'react-router-dom'
 import { usePlatform } from '@/app/kosmos/KosmosContext'
 import { RecollectionMenubarProvider } from './RecollectionMenubarContext'
 import { RecollectionActionsProvider } from './RecollectionActionsContext'
 import { RecollectionTitleContent } from './RecollectionTitleContent'
 import { RecollectionMenubar } from './RecollectionMenubar'
-import { FlippingCardView } from './FlippingCardView'
 
 export function RecollectionLayout() {
   const { recollectionId } = useParams<{ recollectionId: string }>()
@@ -40,7 +39,7 @@ export function RecollectionLayout() {
         <div className="flex min-h-0 flex-1 flex-col">
           <RecollectionMenubar />
           <div className="flex min-h-0 flex-1 flex-col overflow-hidden">
-            <FlippingCardView />
+            <Outlet />
           </div>
         </div>
       </RecollectionActionsProvider>
diff --git a/frontend/src/app/recollections/RecollectionViewSwitcher.tsx b/frontend/src/app/recollections/RecollectionViewSwitcher.tsx
index e22f4ae..6895782 100644
--- a/frontend/src/app/recollections/RecollectionViewSwitcher.tsx
+++ b/frontend/src/app/recollections/RecollectionViewSwitcher.tsx
@@ -5,21 +5,12 @@
 
 import React, { useCallback, useEffect } from 'react'
 import { useLocation, useNavigate, useParams } from 'react-router-dom'
-import { FluxIcon, LogosIcon } from '@/lib/icons'
+import { FluxIcon, LogosIcon, RecollectionsIcon } from '@/lib/icons'
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip'
 
-const VIEW_TOGGLE_KEYS = { key: 'v', shiftKey: true }
-
-function matchKey(ev: KeyboardEvent, want: { key: string; shiftKey: boolean }) {
-  const mod = ev.ctrlKey || ev.metaKey
-  return ev.key.toLowerCase() === want.key && !!mod && ev.shiftKey === want.shiftKey
-}
-
 function shortcutLabel() {
-  if (typeof navigator !== 'undefined' && /Mac|iPod|iPhone|iPad/.test(navigator.platform)) {
-    return '⌘⇧V'
-  }
-  return 'Ctrl+Shift+V'
+  const isMac = typeof navigator !== 'undefined' && /Mac|iPod|iPhone|iPad/.test(navigator.platform)
+  return isMac ? '⌘⇧↑ / ⌘⇧↓' : 'Ctrl+Shift+↑ / Ctrl+Shift+↓'
 }
 
 export function RecollectionViewSwitcher() {
@@ -28,30 +19,53 @@ export function RecollectionViewSwitcher() {
   const navigate = useNavigate()
   const base = recollectionId ? `/recollections/${recollectionId}` : ''
 
-  const isFlux = pathname.endsWith('/flux')
+  type Mode = 'logos' | 'katalogos' | 'flux'
+  const mode: Mode = pathname.endsWith('/flux')
+    ? 'flux'
+    : pathname.endsWith('/katalogos')
+      ? 'katalogos'
+      : 'logos'
+
+  const goRelative = useCallback(
+    (delta: 1 | -1) => {
+      if (!base) return
+      const order: Mode[] = ['logos', 'katalogos', 'flux']
+      const currentIndex = order.indexOf(mode)
+      const nextMode = order[(currentIndex + (delta === 1 ? 1 : order.length - 1)) % order.length]
+      navigate(`${base}/${nextMode}`)
+    },
+    [base, mode, navigate]
+  )
 
   const toggle = useCallback(() => {
-    if (!base) return
-    navigate(isFlux ? `${base}/logos` : `${base}/flux`)
-  }, [base, isFlux, navigate])
+    goRelative(1)
+  }, [goRelative])
 
   useEffect(() => {
     const onKeyDown = (ev: KeyboardEvent) => {
-      if (matchKey(ev, VIEW_TOGGLE_KEYS)) {
-        ev.preventDefault()
-        toggle()
+      const isMod = ev.ctrlKey || ev.metaKey
+      const isShortcut = isMod && ev.shiftKey && (ev.key === 'ArrowDown' || ev.key === 'ArrowUp')
+      if (!isShortcut) return
+      ev.preventDefault()
+      if (ev.key === 'ArrowDown') {
+        goRelative(1)
+      } else if (ev.key === 'ArrowUp') {
+        goRelative(-1)
       }
     }
     window.addEventListener('keydown', onKeyDown, true)
     return () => window.removeEventListener('keydown', onKeyDown, true)
-  }, [toggle])
+  }, [goRelative])
 
   if (!base) return null
 
   const shortcut = shortcutLabel()
-  const tooltipText = isFlux
-    ? `Flux · Switch to Logos (${shortcut})`
-    : `Logos · Switch to Flux (${shortcut})`
+  const tooltipText =
+    mode === 'logos'
+      ? `Logos · Next: Katalogos (${shortcut})`
+      : mode === 'katalogos'
+        ? `Katalogos · Next: Flux (${shortcut})`
+        : `Flux · Next: Logos (${shortcut})`
 
   return (
     <div className="flex shrink-0 items-center gap-2">
@@ -61,20 +75,34 @@ export function RecollectionViewSwitcher() {
             <button
               type="button"
               onClick={toggle}
-              aria-label={isFlux ? 'Switch to Logos' : 'Switch to Flux'}
+              aria-label={
+                mode === 'logos'
+                  ? 'Switch to Katalogos'
+                  : mode === 'katalogos'
+                    ? 'Switch to Flux'
+                    : 'Switch to Logos'
+              }
               className="h-7 w-7 shrink-0 overflow-hidden rounded-full border border-border/60 bg-background shadow-md transition-colors hover:bg-accent hover:text-accent-foreground focus:outline-none focus-visible:ring-2 focus-visible:ring-ring"
             >
               <div className="h-full w-full overflow-hidden">
                 <div
                   className="flex w-full flex-col transition-transform duration-200 ease-out"
                   style={{
-                    height: '200%',
-                    transform: isFlux ? 'translateY(-50%)' : 'translateY(0)',
+                    height: '300%',
+                    transform:
+                      mode === 'logos'
+                        ? 'translateY(0)'
+                        : mode === 'katalogos'
+                          ? 'translateY(-33.3333%)'
+                          : 'translateY(-66.6667%)',
                   }}
                 >
                   <div className="flex h-9 w-full items-center justify-center">
                     <LogosIcon className="size-3.5 shrink-0 text-muted-foreground" />
                   </div>
+                  <div className="flex h-9 w-full items-center justify-center">
+                    <RecollectionsIcon className="size-3.5 shrink-0 text-muted-foreground" />
+                  </div>
                   <div className="flex h-9 w-full items-center justify-center">
                     <FluxIcon className="size-3.5 shrink-0 text-muted-foreground" />
                   </div>
@@ -88,11 +116,21 @@ export function RecollectionViewSwitcher() {
       <div className="h-9 min-w-[3.5rem] overflow-hidden">
         <div
           className="flex w-full flex-col transition-transform duration-200 ease-out"
-          style={{ transform: isFlux ? 'translateY(-50%)' : 'translateY(0)' }}
+          style={{
+            transform:
+              mode === 'logos'
+                ? 'translateY(0)'
+                : mode === 'katalogos'
+                  ? 'translateY(-33.3333%)'
+                  : 'translateY(-66.6667%)',
+          }}
         >
           <span className="flex h-9 flex-shrink-0 items-center text-sm font-medium text-foreground">
             Logos
           </span>
+          <span className="flex h-9 flex-shrink-0 items-center text-sm font-medium text-foreground">
+            Katalogos
+          </span>
           <span className="flex h-9 flex-shrink-0 items-center text-sm font-medium text-foreground">
             Flux
           </span>
diff --git a/frontend/src/app/recollections/katalogos/KatalogosPage.tsx b/frontend/src/app/recollections/katalogos/KatalogosPage.tsx
new file mode 100644
index 0000000..8dd58fe
--- /dev/null
+++ b/frontend/src/app/recollections/katalogos/KatalogosPage.tsx
@@ -0,0 +1,31 @@
+/**
+ * Katalogos page: third view for a recollection.
+ * Simple placeholder layout, matching Logos/Flux flex and typography.
+ */
+
+import React from 'react'
+import { useParams } from 'react-router-dom'
+import { usePlatform } from '@/app/kosmos/KosmosContext'
+
+export function KatalogosPage() {
+  const { recollectionId } = useParams<{ recollectionId: string }>()
+  const { recollections } = usePlatform()
+
+  const recollection = recollectionId ? recollections.find((p) => p.id === recollectionId) : null
+  const title = recollection?.name ?? 'Untitled'
+
+  return (
+    <div className="flex h-full min-h-0 flex-1 flex-col overflow-auto bg-background">
+      <div className="mx-auto w-full max-w-3xl p-4">
+        <h1 className="mb-2 truncate font-serif text-2xl font-semibold tracking-tight text-foreground">
+          {title}
+        </h1>
+        <p className="mb-6 text-sm text-muted-foreground">Katalogos</p>
+        <div className="rounded-lg border border-dashed border-muted-foreground/30 bg-muted/10 p-4 text-sm text-muted-foreground">
+          Katalogos view coming soon.
+        </div>
+      </div>
+    </div>
+  )
+}
+
diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index e7a98e5..6aeeffc 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -8,6 +8,9 @@ import { registerBuiltinConfigTypes } from './lib/graph/configTypes'
 import { KosmosPage } from './app/kosmos/KosmosPage'
 import { RecollectionsPage } from './app/recollections/RecollectionsPage'
 import { RecollectionLayout } from './app/recollections/RecollectionLayout'
+import { LogosPage } from './app/recollections/logos/LogosPage'
+import { FluxRoute } from './app/recollections/flux/FluxRoute'
+import { KatalogosPage } from './app/recollections/katalogos/KatalogosPage'
 import './lib/prismSetup'
 import 'prismjs/themes/prism.css'
 import './styles.css'
@@ -26,8 +29,9 @@ createRoot(document.getElementById('root')!).render(
             <Route path="recollections" element={<RecollectionsPage />} />
             <Route path="recollections/:recollectionId" element={<RecollectionLayout />}>
               <Route index element={<Navigate to="logos" replace />} />
-              <Route path="logos" element={<></>} />
-              <Route path="flux" element={<></>} />
+              <Route path="logos" element={<LogosPage />} />
+              <Route path="katalogos" element={<KatalogosPage />} />
+              <Route path="flux" element={<FluxRoute />} />
             </Route>
           </Route>
         </Routes>