diff --git a/CLAUDE.md b/CLAUDE.md
index b3d344e..e75ca46 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -154,6 +154,9 @@ Ionicons 4.5 (`wwwroot/vendor/ionicons.min.css`, `<i class="ion-md-...">`) is lo
     in sublayers of `utilities`, so these overrides beat **every** daisyUI rule. Each override must exclude the
     daisyUI variants it shouldn't touch, e.g. `:not(:where(.btn-ghost, .btn-link, ...))`, and call sites drop a neo
     shadow with `shadow-none!`.
+  - Selectors are an inset well; a checked checkbox is filled and raised like a primary button (daisyUI fills one only
+    for a colour variant, and without one drew a tick on nothing), and a checked radio's dot is the primary colour. A
+    file input's own button (Choose File, Browse…) is raised like the app's buttons.
 - Never write `@utility collapse`. It brings back Tailwind's own `collapse` utility (`visibility: collapse`), and
   every collapse disappears.
 
@@ -168,7 +171,7 @@ Below `md` the app is laid out for a phone, and a touch screen gets thumb-sized
   - A window at most 30rem tall (a phone held sideways) is the `short:` variant.
 - **`touch.css`** is plain CSS in Tailwind's utilities layer, so like `neo.css` it beats daisyUI's sublayers. It sets
   daisyUI's own size variables:
-  - buttons, tabs, inputs and selects are 44px tall;
+  - buttons, tabs, inputs, selects and file inputs are 44px tall;
   - extra small buttons and the badges that act are 36px, with a transparent `::after` that reaches 44 (5px around
     the padding box);
   - checkboxes and radios are 24px, toggles and range thumbs 28;
diff --git a/Styles/neo.css b/Styles/neo.css
index 10ccdcd..9e6e7b0 100644
--- a/Styles/neo.css
+++ b/Styles/neo.css
@@ -210,21 +210,54 @@
 
 	&:not(:where(.file-input-ghost, .file-input-neutral, .file-input-primary, .file-input-secondary, .file-input-accent, .file-input-info, .file-input-success, .file-input-warning, .file-input-error, .validator:user-invalid, [aria-invalid="true"])) {
 		border-color: transparent;
+
+		/* its button (Choose File, Browse…) is a raised button like every other, not daisyUI's flat neutral block; a
+		   small gap keeps its shadow inside the well */
+		&::file-selector-button {
+			margin-block: .25rem;
+			margin-inline-start: .25rem;
+			height: calc(100% - .5rem);
+			border: none;
+			border-radius: calc(var(--radius-box) - .25rem);
+			background-color: var(--color-base-100);
+			background-image: linear-gradient(145deg, color-mix(in oklab, var(--color-base-100), white var(--neo-lift)), color-mix(in oklab, var(--color-base-100), black var(--neo-sink)));
+			box-shadow: -2px -2px 4px var(--neo-light), 2px 2px 4px var(--neo-dark);
+			color: var(--color-base-content);
+			font-weight: 600;
+		}
 	}
 }
 
-/* Selectors: an inset well while unchecked; once checked they keep daisyUI's filled look. */
+/* Selectors: an inset well while unchecked. A checked box is filled like a button of the primary colour, raised, its
+   tick in the colour's content (daisyUI fills one only for a colour variant: without, a tick on nothing); a checked
+   radio keeps the well, its dot the primary colour. A colour variant keeps its own colour. */
 @utility checkbox {
+	&:not(:where(.checkbox-neutral, .checkbox-primary, .checkbox-secondary, .checkbox-accent, .checkbox-info, .checkbox-success, .checkbox-warning, .checkbox-error)) {
+		--input-color: var(--color-primary);
+		color: var(--color-primary-content);
+	}
+
 	&:not(:where(:checked, :indeterminate, [aria-checked="true"], [aria-checked="mixed"], :disabled)) {
 		border-color: transparent;
 		background-image: linear-gradient(145deg, var(--neo-grad-dark), var(--neo-grad-light));
 		background-origin: border-box;
 		box-shadow: inset 2px 2px 4px var(--neo-dark), inset -2px -2px 4px var(--neo-light);
 	}
+
+	&:where(:checked, :indeterminate, [aria-checked="true"], [aria-checked="mixed"]):not(:disabled) {
+		border-color: transparent;
+		background-image: linear-gradient(145deg, color-mix(in oklab, var(--input-color), white var(--neo-lift)), color-mix(in oklab, var(--input-color), black var(--neo-sink)));
+		background-origin: border-box;
+		box-shadow: -2px -2px 4px var(--neo-light), 2px 2px 4px var(--neo-dark);
+	}
 }
 
 @utility radio {
-	&:not(:where(:checked, [aria-checked="true"], :disabled)) {
+	&:not(:where(.radio-neutral, .radio-primary, .radio-secondary, .radio-accent, .radio-info, .radio-success, .radio-warning, .radio-error)) {
+		--input-color: var(--color-primary);
+	}
+
+	&:not(:where(:disabled)) {
 		border-color: transparent;
 		background-image: linear-gradient(145deg, var(--neo-grad-dark), var(--neo-grad-light));
 		background-origin: border-box;
diff --git a/Styles/touch.css b/Styles/touch.css
index 16bc5cf..4b170c3 100644
--- a/Styles/touch.css
+++ b/Styles/touch.css
@@ -89,7 +89,8 @@
 		}
 
 		.input:not(.input-lg, .input-xl),
-		.select:not(.select-lg, .select-xl) {
+		.select:not(.select-lg, .select-xl),
+		.file-input:not(.file-input-lg, .file-input-xl) {
 			--size: 2.75rem;
 		}
 
diff --git a/tests/e2e/Mobile/ControlsTests.cs b/tests/e2e/Mobile/ControlsTests.cs
new file mode 100644
index 0000000..964f8a9
--- /dev/null
+++ b/tests/e2e/Mobile/ControlsTests.cs
@@ -0,0 +1,56 @@
+using decePubClient.E2E.Support;
+
+using Microsoft.Playwright;
+
+namespace decePubClient.E2E.Mobile
+{
+	// Controls the sweep doesn't reach, since it measures pages with their sections closed: Settings' Data import/export
+	// opened on the narrowest phone, its file inputs and checkboxes thumb-sized and drawn like the rest of the app (a
+	// ticked box filled, not a tick on nothing), in both themes. Photos go to tests/e2e/out/mobile-controls/.
+	[Trait("Category", "Mobile")]
+	public sealed class ControlsTests(Browser browser)
+	{
+		static readonly Phone Phone = Phone.Narrow360;
+		static readonly string OutDir = Path.Combine(AppContext.BaseDirectory, "..", "..", "..", "out", "mobile-controls");
+
+		[Fact]
+		public async Task Data_transfer_controls_are_thumb_sized_and_drawn_like_the_rest()
+		{
+			await using var session = await SignIn.As(browser, Pasture.Personas().First(), Phone);
+			var page = session.Page;
+			await Results.Cell("client.mobile.controls.data-transfer", "privapub", Phone.Key, async () =>
+			{
+				await page.GotoAsync($"{Pasture.Site}/settings");
+				var header = page.Locator(".collapse-title", new() { HasText = "Data import/export" }).First;
+				await header.TapAsync();
+				var archive = page.Locator("[data-archive]");
+				await archive.WaitForAsync(new() { Timeout = 30000 });
+
+				Fit.AssertTouchable(await Fit.Now(page, "[data-archive]"));
+				Fit.AssertTouchable(await Fit.Now(page, "[data-import]"));
+
+				// a ticked box is filled: daisyUI leaves it transparent unless a colour asks otherwise
+				var ticked = archive.Locator("input[type=checkbox]:checked").First;
+				var fill = await ticked.EvaluateAsync<string>("e => getComputedStyle(e).backgroundColor");
+				Assert.False(fill is "transparent" or "rgba(0, 0, 0, 0)", $"a ticked checkbox is drawn on nothing ({fill})");
+				// a file input is as tall as the other fields on a touch screen
+				foreach (var input in await page.Locator("[data-archive] input[type=file], [data-import] input[type=file]").AllAsync())
+					Assert.True((await input.BoundingBoxAsync())!.Height >= 44, $"a file input is {(await input.BoundingBoxAsync())!.Height}px tall: "
+						+ await input.EvaluateAsync<string>("e => { const s = getComputedStyle(e); return `${e.className} --size=${s.getPropertyValue('--size')} height=${s.height} coarse=${matchMedia('(pointer: coarse)').matches}`; }"));
+				// photos the size of the screen: one of an element taller than the screen makes Playwright resize the page,
+				// which drops the touch emulation for what comes after
+				Directory.CreateDirectory(OutDir);
+				foreach (var theme in new[] { "neo-dark", "neo-light" })
+				{
+					await page.EvaluateAsync("t => document.documentElement.setAttribute('data-theme', t)", theme);
+					foreach (var (part, what) in new[] { ("archive", "[data-archive-make]"), ("restore", "input[data-archive-file]"), ("csv", "[data-import]") })
+					{
+						await page.Locator(what).First.EvaluateAsync("e => e.scrollIntoView({ block: 'start' })");
+						await page.ScreenshotAsync(new() { Path = Path.Combine(OutDir, $"{part}-{theme}.png"), Animations = ScreenshotAnimations.Disabled });
+					}
+				}
+				await session.AssertGuards();
+			}, page);
+		}
+	}
+}