diff --git a/resources/css/showcase.css b/resources/css/showcase.css
index 7bbaae38..6342ee32 100644
--- a/resources/css/showcase.css
+++ b/resources/css/showcase.css
@@ -32,6 +32,16 @@
  * attribute, so a few widths below are plain `.showcase-*` classes instead of `data-md-showcase-*`
  * hooks — the same "caller's class" mechanism any application would reach for, deliberately not
  * named `md-*` since they are not part of the fixed set text.css declares.
+ *
+ * Batch 4 (the last: containment, carousel, bars, navigation, pages) adds the standard side
+ * sheet demo's own breakpoint (a `<x-row>` beats its own `stack-below` alignment back to `stretch`
+ * once collapsed to a column, which an `align` the row mode needs would otherwise leave
+ * shrink-wrapped), a bordered app-bar/toolbar frame (plain, `visible` for the search bar whose
+ * docked suggestions must not clip, `rounded` for the large-screen docked toolbar), a narrow
+ * scrollable-tabs box, and the navigation bar and rail demo frames (`bar`, `bar-wide` inside its
+ * own horizontal-scroll wrapper, `rail`, `rail-wide`) with their filler "page" and content panes.
+ * Every per-item carousel colour stays the caller's own inline `style`, the same mechanism as the
+ * colour swatch above.
  */
 
 @layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
@@ -446,6 +456,17 @@
         width: 100%;
         overflow-x: auto;
     }
+
+    /* Containment: the standard side sheet demo is a row from `expanded` (840px), M3's own
+       condition for a co-planar sheet, and a column below it — `<x-row>`'s own `stack-below`
+       stacks it there, but leaves the `align="start"` the row layout needs (so the sheet does not
+       stretch to the text column's height) in place, which would otherwise shrink-wrap both
+       columns instead of stacking them full width. */
+    @media (width < 840px) {
+        [data-md-showcase-side-sheet-demo] {
+            align-items: stretch;
+        }
+    }
 }
 
 /* A handful of call sites (<x-input>, <x-datepicker>, <x-slider>) forward only `class` and
diff --git a/resources/views/showcase/sections/containment.blade.php b/resources/views/showcase/sections/containment.blade.php
index ac1f5fc8..9b7834e7 100644
--- a/resources/views/showcase/sections/containment.blade.php
+++ b/resources/views/showcase/sections/containment.blade.php
@@ -1,7 +1,7 @@
 @php
     $examples = [
         'Cards' => <<<'BLADE'
-            <div class="grid w-full gap-4 expanded:grid-cols-3">
+            <x-grid :columns="['compact' => 1, 'expanded' => 3]" gap="space200" style="width: 100%;">
                 <x-card title="Filled" subtitle="surface-container-highest">
                     The default card.
                     <x-slot:actions><x-button label="Open" /></x-slot:actions>
@@ -15,36 +15,36 @@
                 <x-card title="Outlined" subtitle="an outline-variant edge" variant="outlined" separator>
                     Quiet, on the surface itself.
                 </x-card>
-            </div>
+            </x-grid>
             BLADE,
         'A card that opens from anywhere on it' => <<<'BLADE'
-            <x-card variant="outlined" data-md-list-row class="w-full max-w-sm">
-                <a href="#containment" data-md-list-open class="type-title-md">holiday-photos.zip</a>
-                <p class="mt-1 text-on-surface-variant">248 MB · expires in 3 days</p>
+            <x-card variant="outlined" data-md-list-row style="width: 100%; max-width: 384px;">
+                <a href="#containment" data-md-list-open class="md-type-title-md">holiday-photos.zip</a>
+                <p class="md-ink-variant" style="margin-top: var(--md-sys-measurement-space50);">248 MB · expires in 3 days</p>
                 <x-slot:actions>
                     <x-button label="Copy link" icon="content_copy" x-on:click="materialToast('Link copied', { type: 'success' })" />
                 </x-slot:actions>
             </x-card>
             BLADE,
         'A directly actionable card: the card is the tab stop' => <<<'BLADE'
-            <x-card variant="elevated" actionable role="link" title="contract.pdf" class="w-full max-w-sm">
-                <a href="#containment" data-md-list-open tabindex="-1" class="type-title-md">contract.pdf</a>
-                <p class="mt-1 text-on-surface-variant">1.2 MB · downloaded twice</p>
+            <x-card variant="elevated" actionable role="link" title="contract.pdf" style="width: 100%; max-width: 384px;">
+                <a href="#containment" data-md-list-open tabindex="-1" class="md-type-title-md">contract.pdf</a>
+                <p class="md-ink-variant" style="margin-top: var(--md-sys-measurement-space50);">1.2 MB · downloaded twice</p>
                 <x-slot:actions>
                     <x-button label="Copy link" icon="content_copy" x-on:click="materialToast('Link copied', { type: 'success' })" />
                 </x-slot:actions>
             </x-card>
             BLADE,
         'A card being dragged' => <<<'BLADE'
-            <div x-data="{ dragged: false }" class="w-full max-w-sm space-y-4">
+            <x-stack gap="space200" x-data="{ dragged: false }" style="width: 100%; max-width: 384px;">
                 <x-button label="Pick it up or put it down" variant="tonal" x-on:click="dragged = ! dragged" />
                 <x-card variant="elevated" title="holiday-photos.zip" subtitle="248 MB" x-bind:data-md-dragged="dragged || null">
                     Elevation 4 and the 16% state layer, for as long as the application says the card is being carried.
                 </x-card>
-            </div>
+            </x-stack>
             BLADE,
         'Lists' => <<<'BLADE'
-            <div class="grid w-full gap-6 medium:grid-cols-2">
+            <x-grid :columns="['compact' => 1, 'medium' => 2]" gap="space300" style="width: 100%;">
                 <x-list dividers label="Files">
                     <x-list-item title="holiday-photos.zip" description="248 MB" icon="folder_zip" trailing="3 days" />
                     <x-list-item title="contract.pdf" overline="Password protected" description="1.2 MB · downloaded twice" icon="picture_as_pdf" trailing="1 hour" />
@@ -59,35 +59,35 @@
                     </x-list-item>
                     <x-list-item title="Dan Fischer" description="Invitation withdrawn" avatar="DF" link="#containment" disabled />
                 </x-list>
-            </div>
+            </x-grid>
             BLADE,
         'A list to choose from' => <<<'BLADE'
-            <x-list selectable label="Expiry" class="w-full max-w-sm">
+            <x-list selectable label="Expiry" style="width: 100%; max-width: 384px;">
                 <x-list-item title="One hour" :selected="false" />
                 <x-list-item title="Three days" :selected="true" />
                 <x-list-item title="Thirty days" :selected="false" />
             </x-list>
             BLADE,
         'A list with leading video' => <<<'BLADE'
-            <x-list dividers label="Clips" class="w-full max-w-md">
+            <x-list dividers label="Clips" style="width: 100%; max-width: 448px;">
                 <x-list-item title="Sunrise over the lake" description="2:14 · 48 MB">
                     <x-slot:video>
-                        <div class="grid place-items-center bg-linear-to-br from-primary-container to-tertiary-container text-on-primary-container">
-                            <x-icon name="play_circle" class="size-6" />
+                        <div style="display: grid; place-items: center; background: linear-gradient(to bottom right, var(--md-sys-color-primary-container), var(--md-sys-color-tertiary-container)); color: var(--md-sys-color-on-primary-container);">
+                            <x-icon name="play_circle" />
                         </div>
                     </x-slot:video>
                 </x-list-item>
                 <x-list-item overline="Draft" title="Walking the old town" description="Uploaded yesterday · 7:48">
                     <x-slot:video>
-                        <div class="grid place-items-center bg-linear-to-br from-secondary-container to-primary-container text-on-secondary-container">
-                            <x-icon name="play_circle" class="size-6" />
+                        <div style="display: grid; place-items: center; background: linear-gradient(to bottom right, var(--md-sys-color-secondary-container), var(--md-sys-color-primary-container)); color: var(--md-sys-color-on-secondary-container);">
+                            <x-icon name="play_circle" />
                         </div>
                     </x-slot:video>
                 </x-list-item>
             </x-list>
             BLADE,
         'Dividers and collapse' => <<<'BLADE'
-            <div class="w-full space-y-4">
+            <x-stack gap="space200" style="width: 100%;">
                 <x-collapse title="How long do links last?" icon="schedule" open>
                     Until the expiry you chose, from one hour to thirty days.
                 </x-collapse>
@@ -95,33 +95,33 @@
                 <x-collapse title="Can recipients upload files?" variant="filled">
                     No. They can only download what you shared.
                 </x-collapse>
-                <div class="flex h-10 items-center gap-4"><span>Left</span><x-divider vertical /><span>Right</span></div>
-            </div>
+                <x-row gap="space200" align="center" style="height: 40px;"><span>Left</span><x-divider vertical /><span>Right</span></x-row>
+            </x-stack>
             BLADE,
         'A divider with a subheader' => <<<'BLADE'
-            <div class="w-full max-w-md">
+            <div style="width: 100%; max-width: 448px;">
                 <x-divider text="Today" />
                 <x-list label="Today">
                     <x-list-item title="holiday-photos.zip" description="Shared with 3 people" icon="folder_zip" />
                     <x-list-item title="contract.pdf" description="Downloaded twice" icon="picture_as_pdf" />
                 </x-list>
-                <x-divider text="Earlier this week" class="mt-2" />
+                <x-divider text="Earlier this week" style="margin-top: var(--md-sys-measurement-space100);" />
                 <x-list label="Earlier this week">
                     <x-list-item title="minutes.docx" description="Expired" icon="description" />
                 </x-list>
             </div>
             BLADE,
         'Collapse bound to a property' => <<<'BLADE'
-            <div x-data="{ advanced: false }" class="w-full space-y-4">
-                <div class="flex flex-wrap items-center gap-4">
+            <x-stack gap="space200" x-data="{ advanced: false }" style="width: 100%;">
+                <x-row wrap align="center" gap="space200">
                     <x-button label="Open" variant="tonal" x-on:click="advanced = true" />
                     <x-button label="Close" variant="tonal" x-on:click="advanced = false" />
-                    <span class="type-body-md text-on-surface-variant">advanced: <span x-text="advanced"></span></span>
-                </div>
+                    <span class="md-type-body-md md-ink-variant">advanced: <span x-text="advanced"></span></span>
+                </x-row>
                 <x-collapse title="Advanced settings" icon="tune" variant="filled" x-model="advanced">
                     Bound with x-model here. In a Livewire view, wire:model="advanced" binds a boolean property the same way, and the page arrives with it open or closed as the property is.
                 </x-collapse>
-            </div>
+            </x-stack>
             BLADE,
         'Dialogs' => <<<'BLADE'
             <div x-data="{ open: false }">
@@ -157,7 +157,7 @@
             <div x-data="{ open: false }">
                 <x-button label="Long body" variant="tonal" x-on:click="open = true" />
                 <x-modal title="Terms of the share link" subtitle="Scroll them: a rule appears under the headline once the text leaves its top, and the one over the buttons goes at its end.">
-                    <div class="space-y-4">
+                    <x-stack gap="space200">
                         <p>A share link opens the files you chose, and only those. Adding a file to the folder later does not add it to a link you have already sent; make a new link for it.</p>
                         <p>Anyone who has the link can open it until it expires. Forwarding the link forwards that access, so send it to the people who need it and to nobody else.</p>
                         <p>A password, when you set one, is asked for every time the link is opened. Send it separately from the link, by another channel, so one intercepted message is not enough.</p>
@@ -168,7 +168,7 @@
                         <p>Previews are generated for images, PDFs and plain text. Other types show their name, size and an icon.</p>
                         <p>Deleting a file you shared removes it from every link that holds it. People who open such a link see the files that are left.</p>
                         <p>These terms apply to every link you create from now on. Links you created before keep the terms they were made under.</p>
-                    </div>
+                    </x-stack>
                     <x-slot:actions>
                         <x-button label="Decline" x-on:click="close()" />
                         <x-button label="Accept" x-on:click="close()" />
@@ -188,25 +188,23 @@
             </div>
             BLADE,
         'A standard side sheet: co-planar from expanded, modal below' => <<<'BLADE'
-            <div x-data="{ open: true }" class="w-full">
-                <div class="expanded:flex expanded:items-start expanded:gap-6">
-                    <div class="min-w-0 flex-1 space-y-4">
-                        <x-button label="Show or hide the filters" variant="tonal" x-on:click="open = ! open" />
-                        <p class="type-body-md text-on-surface-variant">
-                            From <code>expanded</code> (840px) the sheet beside this text is co-planar: no scrim, no focus trap, flat on the surface, divided from this column by a rule. Narrow the window and the same sheet becomes the modal one.
-                        </p>
-                    </div>
+            <x-row data-md-showcase-side-sheet-demo align="start" gap="space300" stack-below="expanded" x-data="{ open: true }">
+                <x-stack gap="space200" style="flex: 1 1 0%; min-width: 0;">
+                    <x-button label="Show or hide the filters" variant="tonal" x-on:click="open = ! open" />
+                    <p class="md-type-body-md md-ink-variant">
+                        From <code>expanded</code> (840px) the sheet beside this text is co-planar: no scrim, no focus trap, flat on the surface, divided from this column by a rule. Narrow the window and the same sheet becomes the modal one.
+                    </p>
+                </x-stack>
 
-                    <x-drawer standard title="Filters" subtitle="Narrow the list down">
-                        <x-list selectable label="Expiry">
-                            <x-list-item title="One hour" :selected="false" />
-                            <x-list-item title="Three days" :selected="true" />
-                            <x-list-item title="Thirty days" :selected="false" />
-                        </x-list>
-                        <x-slot:actions><x-button label="Apply" variant="filled" /></x-slot:actions>
-                    </x-drawer>
-                </div>
-            </div>
+                <x-drawer standard title="Filters" subtitle="Narrow the list down">
+                    <x-list selectable label="Expiry">
+                        <x-list-item title="One hour" :selected="false" />
+                        <x-list-item title="Three days" :selected="true" />
+                        <x-list-item title="Thirty days" :selected="false" />
+                    </x-list>
+                    <x-slot:actions><x-button label="Apply" variant="filled" /></x-slot:actions>
+                </x-drawer>
+            </x-row>
             BLADE,
         'Sheets' => <<<'BLADE'
             <div x-data="{ open: false }">
@@ -235,7 +233,7 @@
             <div x-data="{ open: false }">
                 <x-button label="Bottom sheet with preset heights" variant="tonal" x-on:click="open = true" />
                 <x-bottom-sheet title="Nearby places" snap>
-                    <p class="type-body-md text-on-surface-variant">Press the drag handle, or focus it and press Enter, to move to the next height; from the last it closes. Dragging it settles on the nearest.</p>
+                    <p class="md-type-body-md md-ink-variant">Press the drag handle, or focus it and press Enter, to move to the next height; from the last it closes. Dragging it settles on the nearest.</p>
                     <x-list>
                         <x-list-item title="Hafen" description="240 m · open until 23:00" icon="location_on" />
                         <x-list-item title="Stadtbibliothek" description="600 m · closes at 18:00" icon="location_on" />
@@ -247,10 +245,10 @@
     ];
 @endphp
 
-<section id="containment" class="scroll-mt-24 space-y-6">
-    <h2 class="type-headline-md">Containment</h2>
+<x-livewire-material::stack as="section" id="containment" gap="space300">
+    <h2 class="md-type-headline-md">Containment</h2>
 
-    <p class="max-w-3xl type-body-md text-on-surface-variant">
+    <p class="md-type-body-md md-ink-variant">
         <code>&lt;x-card&gt;</code>, <code>&lt;x-list&gt;</code> and <code>&lt;x-list-item&gt;</code>, <code>&lt;x-divider&gt;</code>, <code>&lt;x-collapse&gt;</code>,
         <code>&lt;x-modal&gt;</code>, <code>&lt;x-drawer&gt;</code> and <code>&lt;x-bottom-sheet&gt;</code>.
     </p>
@@ -258,4 +256,4 @@
     @foreach ($examples as $title => $code)
         <x-showcase::example :$title :$code />
     @endforeach
-</section>
+</x-livewire-material::stack>