diff --git a/src/lib/components/pksx/StorageSlot.svelte b/src/lib/components/pksx/StorageSlot.svelte
index f852126b..99065b11 100644
--- a/src/lib/components/pksx/StorageSlot.svelte
+++ b/src/lib/components/pksx/StorageSlot.svelte
@@ -127,6 +127,7 @@
 		background: var(--slot-fill);
 		box-shadow: var(--shadow-sm);
 		color: var(--ink);
+		outline: none;
 		overflow: visible;
 		transition:
 			transform 120ms ease,
@@ -172,7 +173,7 @@
 	.slot.focused {
 		transform: translateY(-1px);
 		box-shadow:
-			0 0 0 2px var(--rust),
+			inset 0 0 0 2px var(--rust),
 			inset 0 0 0 1px color-mix(in srgb, white, transparent 38%),
 			var(--shadow);
 	}
@@ -188,7 +189,7 @@
 		border-style: solid;
 		border-color: var(--rust);
 		box-shadow:
-			0 0 0 2px var(--rust),
+			inset 0 0 0 2px var(--rust),
 			var(--shadow);
 	}
 
@@ -199,20 +200,20 @@
 
 	.slot.destination-valid {
 		box-shadow:
-			0 0 0 2px color-mix(in srgb, var(--ok), transparent 22%),
+			inset 0 0 0 2px color-mix(in srgb, var(--ok), transparent 22%),
 			var(--shadow-sm);
 	}
 
 	.slot.destination-source {
 		box-shadow:
-			0 0 0 2px color-mix(in srgb, var(--gold), transparent 20%),
+			inset 0 0 0 2px color-mix(in srgb, var(--gold), transparent 20%),
 			var(--shadow-sm);
 	}
 
 	.slot.destination-invalid.focused {
 		opacity: 0.72;
 		box-shadow:
-			0 0 0 2px color-mix(in srgb, var(--err), transparent 18%),
+			inset 0 0 0 2px color-mix(in srgb, var(--err), transparent 18%),
 			var(--shadow);
 	}
 
diff --git a/src/routes/box-shell.e2e.ts b/src/routes/box-shell.e2e.ts
index faba67dc..e2dcef40 100644
--- a/src/routes/box-shell.e2e.ts
+++ b/src/routes/box-shell.e2e.ts
@@ -1076,6 +1076,29 @@ test('keyboard navigation moves deterministically across the box grid', async ({
 	await expect(page.locator('#collection-control-pane-pokemon-storage')).toBeFocused();
 });
 
+test('the active Slot uses one focus ring painted inside its bounds', async ({ page }) => {
+	await openEmptySaves(page);
+	const slot = page.locator('#box-0-slot-0');
+
+	await page.evaluate(() => {
+		document.documentElement.dataset.inputModality = 'controller';
+	});
+	await slot.focus();
+	await expect(slot).toBeFocused();
+	await expect(slot).toHaveClass(/focused/);
+
+	const focusPaint = await slot.evaluate((element) => {
+		const styles = getComputedStyle(element);
+		return {
+			firstShadow: styles.boxShadow.split(/,(?![^(]*\))/)[0],
+			outlineStyle: styles.outlineStyle
+		};
+	});
+
+	expect(focusPaint).toMatchObject({ outlineStyle: 'none' });
+	expect(focusPaint.firstShadow).toContain('inset');
+});
+
 test('compact box controls and keyboard shortcuts update the active box label', async ({
 	page
 }) => {
diff --git a/src/routes/layout.css b/src/routes/layout.css
index dead66c6..c36cf4db 100644
--- a/src/routes/layout.css
+++ b/src/routes/layout.css
@@ -254,7 +254,7 @@ strong {
 	font-weight: 650;
 }
 
-html[data-input-modality='controller'] body :focus {
+html[data-input-modality='controller'] body :focus:not([data-pksx-control-category='slot']) {
 	outline: 3px solid var(--pksx-color-accent-ring) !important;
 	outline-offset: 3px !important;
 }