diff --git a/mobile/lib/screens/onboarding_tone_screen.dart b/mobile/lib/screens/onboarding_tone_screen.dart
index 78ae32b..890b85f 100644
--- a/mobile/lib/screens/onboarding_tone_screen.dart
+++ b/mobile/lib/screens/onboarding_tone_screen.dart
@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import '../state/session_state.dart';
+import '../theme/app_theme.dart';
 import '../widgets/primary_gradient_button.dart';
 
 /// Phase 1 onboarding skeleton: capture a few style samples locally.
@@ -61,27 +62,29 @@ class _OnboardingToneScreenState extends State<OnboardingToneScreen> {
       ),
       body: SafeArea(
         child: ListView(
-          padding: const EdgeInsets.all(24),
+          padding: const EdgeInsets.fromLTRB(24, 8, 24, 32),
           children: [
             Align(
               alignment: Alignment.centerLeft,
               child: Container(
-                width: 56,
-                height: 56,
+                width: 52,
+                height: 52,
                 decoration: BoxDecoration(
-                  color: scheme.primary,
-                  borderRadius: BorderRadius.circular(16),
+                  color: scheme.primaryContainer,
+                  borderRadius: BorderRadius.circular(14),
                 ),
-                child: Icon(Icons.record_voice_over_outlined, size: 28, color: scheme.onPrimary),
+                child: Icon(Icons.record_voice_over_outlined, size: 26, color: scheme.primary),
               ),
             ),
-            const SizedBox(height: 16),
+            const SizedBox(height: 18),
             Text('와카뷰가 따라 쓸 말투', style: theme.textTheme.headlineSmall),
             const SizedBox(height: 8),
             Text(
-              '자주 쓰는 짧은 문장을 3~4개 적어 주세요. 기기에만 저장되며, 초안 요청 시 참고로 씁니다. '
-              '최종 문구·수집 방식은 사람 PoC 이후에 다듬습니다.',
-              style: theme.textTheme.bodyMedium?.copyWith(color: scheme.onSurfaceVariant),
+              '자주 쓰는 짧은 문장을 3~4개 적어 주세요. 기기에만 저장되며, 초안 요청 시 참고로 씁니다.',
+              style: theme.textTheme.bodyMedium?.copyWith(
+                color: scheme.onSurfaceVariant,
+                height: 1.45,
+              ),
             ),
             const SizedBox(height: 28),
             for (var i = 0; i < _samples.length; i++) ...[
@@ -92,16 +95,16 @@ class _OnboardingToneScreenState extends State<OnboardingToneScreen> {
                   labelText: '샘플 ${i + 1}',
                   hintText: i == 0 ? '예: ㅇㅇ 알겠음' : null,
                   prefixIcon: Padding(
-                    padding: const EdgeInsets.only(left: 4, right: 4, top: 4),
+                    padding: const EdgeInsets.only(left: 10, right: 4),
                     child: CircleAvatar(
                       radius: 12,
-                      backgroundColor: scheme.secondaryContainer,
+                      backgroundColor: scheme.primaryContainer,
                       child: Text(
                         '${i + 1}',
                         style: TextStyle(
                           fontSize: 12,
                           fontWeight: FontWeight.w700,
-                          color: scheme.onSecondaryContainer,
+                          color: scheme.onPrimaryContainer,
                         ),
                       ),
                     ),
@@ -110,11 +113,17 @@ class _OnboardingToneScreenState extends State<OnboardingToneScreen> {
               ),
               const SizedBox(height: 12),
             ],
-            const SizedBox(height: 12),
+            const SizedBox(height: 8),
             PrimaryGradientButton(
               label: '이 말투로 시작',
               onPressed: () => _save(markDone: true),
             ),
+            const SizedBox(height: 12),
+            Text(
+              '말투는 나중에 메뉴에서 다시 수정할 수 있습니다.',
+              textAlign: TextAlign.center,
+              style: theme.textTheme.bodySmall?.copyWith(color: scheme.onSurfaceVariant),
+            ),
           ],
         ),
       ),
diff --git a/mobile/lib/theme/app_theme.dart b/mobile/lib/theme/app_theme.dart
index 7aca83d..b4bfd7c 100644
--- a/mobile/lib/theme/app_theme.dart
+++ b/mobile/lib/theme/app_theme.dart
@@ -24,9 +24,10 @@ class AppTheme {
   static const inkDark = Color(0xFFF2F1EF);
   static const mutedDark = Color(0xFF9B9893);
   static const lineDark = Color(0xFF2A2D36);
-  static const tealBright = Color(0xFF2DD4BF);
-  static const tealSoftDark = Color(0xFF143D3A);
-  static const twinAmberDark = Color(0xFFFBBF24);
+  /// Dark accent — muted teal (avoid neon cyan against charcoal).
+  static const tealBright = Color(0xFF5EBBB0);
+  static const tealSoftDark = Color(0xFF1A3331);
+  static const twinAmberDark = Color(0xFFE0A84A);
 
   /// Kept for call sites that still reference a "brand" fill — solid teal, not a rainbow.
   static const brandGradient = LinearGradient(
@@ -70,7 +71,7 @@ class AppTheme {
       brightness == Brightness.dark ? Colors.black.withValues(alpha: 0.35) : const Color(0xFF1C1B1A).withValues(alpha: 0.06);
 
   static Color mineBubble(Brightness brightness) =>
-      brightness == Brightness.dark ? tealSoftDark : teal;
+      brightness == Brightness.dark ? const Color(0xFF244844) : teal;
 
   static Color mineBubbleFg(Brightness brightness) =>
       brightness == Brightness.dark ? inkDark : Colors.white;