diff --git a/web/src/features/groups/GroupSourcesEditor.tsx b/web/src/features/groups/GroupSourcesEditor.tsx
index 56d8ce3..196b4e1 100644
--- a/web/src/features/groups/GroupSourcesEditor.tsx
+++ b/web/src/features/groups/GroupSourcesEditor.tsx
@@ -1,10 +1,12 @@
 import { useState } from "react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import * as stylex from "@stylexjs/stylex";
 import { groupSourcesPutMutation, groupSourcesQuery } from "@/lib/queries";
 import type { Blocklist } from "@/lib/types";
 import { sameSet, toggleSource } from "./sourceSet";
 import InlineError from "@/lib/InlineError";
-import { buttonClass, focusRing, primaryButtonClass } from "@/ui/classes";
+import { styles as shared } from "@/ui/styles";
+import { colors } from "@/ui/tokens.stylex";
 import { READ_ONLY_HINT, useReadOnlyConfig } from "@/features/settings/authority";
 
 interface Props {
@@ -12,6 +14,35 @@ interface Props {
 	blocklists: Blocklist[];
 }
 
+const styles = stylex.create({
+	note: {
+		marginTop: "0.75rem",
+		fontSize: "0.875rem",
+		lineHeight: "1.25rem",
+		color: colors.textMuted,
+	},
+	root: {
+		marginTop: "0.75rem",
+	},
+	list: {
+		display: "flex",
+		flexDirection: "column",
+		gap: "0.25rem",
+	},
+	checkboxLabel: {
+		display: "inline-flex",
+		alignItems: "center",
+		gap: "0.5rem",
+		fontSize: "0.875rem",
+		lineHeight: "1.25rem",
+	},
+	buttonRow: {
+		marginTop: "0.75rem",
+		display: "flex",
+		gap: "0.5rem",
+	},
+});
+
 export default function GroupSourcesEditor({ groupId, blocklists }: Props) {
 	const queryClient = useQueryClient();
 	const sources = useQuery(groupSourcesQuery(groupId));
@@ -21,7 +52,7 @@ export default function GroupSourcesEditor({ groupId, blocklists }: Props) {
 
 	if (sources.isPending) {
 		return (
-			<p role="status" className="mt-3 text-sm text-zinc-500">
+			<p role="status" {...stylex.props(styles.note)}>
 				Loading sources…
 			</p>
 		);
@@ -29,27 +60,23 @@ export default function GroupSourcesEditor({ groupId, blocklists }: Props) {
 	if (sources.isError) return <InlineError error={sources.error} />;
 
 	if (blocklists.length === 0) {
-		return (
-			<p className="mt-3 text-sm text-zinc-500">
-				No blocklist sources exist yet — add them on the Blocklists page.
-			</p>
-		);
+		return <p {...stylex.props(styles.note)}>No blocklist sources exist yet — add them on the Blocklists page.</p>;
 	}
 
 	const current = selected ?? sources.data;
 	const dirty = !sameSet(current, sources.data);
 
 	return (
-		<div className="mt-3">
-			<ul className="space-y-1">
+		<div {...stylex.props(styles.root)}>
+			<ul {...stylex.props(styles.list)}>
 				{blocklists.map((blocklist) => (
 					<li key={blocklist.id}>
-						<label className="inline-flex items-center gap-2 text-sm">
+						<label {...stylex.props(styles.checkboxLabel)}>
 							<input
 								type="checkbox"
 								checked={current.includes(blocklist.id)}
 								onChange={() => setSelected(toggleSource(current, blocklist.id))}
-								className={focusRing}
+								{...stylex.props(shared.focusRing)}
 							/>
 							{blocklist.name}
 						</label>
@@ -57,7 +84,7 @@ export default function GroupSourcesEditor({ groupId, blocklists }: Props) {
 				))}
 			</ul>
 			<InlineError error={mutation.error} />
-			<div className="mt-3 flex gap-2">
+			<div {...stylex.props(styles.buttonRow)}>
 				<button
 					type="button"
 					disabled={!dirty || mutation.isPending || readOnly}
@@ -65,12 +92,16 @@ export default function GroupSourcesEditor({ groupId, blocklists }: Props) {
 					onClick={() =>
 						mutation.mutate({ id: groupId, sourceIds: current }, { onSuccess: () => setSelected(null) })
 					}
-					className={primaryButtonClass}
+					{...stylex.props(shared.primaryButton, shared.focusRing)}
 				>
 					Save sources
 				</button>
 				{dirty && (
-					<button type="button" onClick={() => setSelected(null)} className={buttonClass}>
+					<button
+						type="button"
+						onClick={() => setSelected(null)}
+						{...stylex.props(shared.button, shared.focusRing)}
+					>
 						Discard
 					</button>
 				)}