diff --git a/lib/main_dev.dart b/lib/main_dev.dart
index f223707..e23ba1d 100644
--- a/lib/main_dev.dart
+++ b/lib/main_dev.dart
@@ -25,6 +25,7 @@ import 'screens/onboarding.dart';
 import 'screens/splash.dart';
 import 'theme/tokens.dart';
 import 'theme/tweaks.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 void main() => runApp(const DevApp());
 
@@ -156,13 +157,19 @@ class _DevLauncher extends StatelessWidget {
                     child: Text(
                       '화면 점검 (DEV)',
                       style: TextStyle(
-                        fontSize: 22,
+                        fontSize: SeedType.title,
                         fontWeight: FontWeight.w800,
                         color: t.fg,
                       ),
                     ),
                   ),
-                  Text('다크', style: TextStyle(color: t.fgMuted, fontSize: 13)),
+                  Text(
+                    '다크',
+                    style: TextStyle(
+                      color: t.fgMuted,
+                      fontSize: SeedType.label,
+                    ),
+                  ),
                   const SizedBox(width: 6),
                   Switch(value: dark, onChanged: onToggleDark),
                 ],
@@ -170,7 +177,7 @@ class _DevLauncher extends StatelessWidget {
               const SizedBox(height: 6),
               Text(
                 '서버 없이 목 데이터로 동작합니다.',
-                style: TextStyle(color: t.fgMuted, fontSize: 13),
+                style: TextStyle(color: t.fgMuted, fontSize: SeedType.label),
               ),
               const SizedBox(height: 20),
               Expanded(
@@ -213,10 +220,10 @@ class _LauncherTile extends StatelessWidget {
     final DkTokens t = DkTheme.of(context);
     return Material(
       color: t.bg,
-      borderRadius: BorderRadius.circular(16),
+      borderRadius: BorderRadius.circular(SeedRadius.md),
       child: InkWell(
         onTap: onTap,
-        borderRadius: BorderRadius.circular(16),
+        borderRadius: BorderRadius.circular(SeedRadius.md),
         child: Padding(
           padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 16),
           child: Row(
@@ -228,7 +235,7 @@ class _LauncherTile extends StatelessWidget {
                     Text(
                       title,
                       style: TextStyle(
-                        fontSize: 16,
+                        fontSize: SeedType.bodyLg,
                         fontWeight: FontWeight.w700,
                         color: t.fg,
                       ),
@@ -236,7 +243,10 @@ class _LauncherTile extends StatelessWidget {
                     const SizedBox(height: 4),
                     Text(
                       desc,
-                      style: TextStyle(fontSize: 13, color: t.fgMuted),
+                      style: TextStyle(
+                        fontSize: SeedType.label,
+                        color: t.fgMuted,
+                      ),
                     ),
                   ],
                 ),
diff --git a/lib/parts/app_header.dart b/lib/parts/app_header.dart
index 6ee3536..85172a3 100644
--- a/lib/parts/app_header.dart
+++ b/lib/parts/app_header.dart
@@ -3,6 +3,7 @@ import 'package:flutter/widgets.dart';
 import '../theme/tokens.dart';
 import '../widgets/dk_bell_button.dart';
 import '../widgets/dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 화면 상단 헤더(인사 + 알림 벨). 프로토타입 `AppHeader`.
 ///
@@ -45,7 +46,7 @@ class AppHeader extends StatelessWidget {
                 alignment: Alignment.center,
                 decoration: BoxDecoration(
                   color: t.bgPress,
-                  borderRadius: BorderRadius.circular(12),
+                  borderRadius: BorderRadius.circular(SeedRadius.sm),
                 ),
                 child: DkIcon('chevL', size: 22, color: t.fg),
               ),
@@ -61,7 +62,7 @@ class AppHeader extends StatelessWidget {
                     subtitle!,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 13,
+                      fontSize: SeedType.label,
                       fontWeight: FontWeight.w600,
                       color: t.fgSubtle,
                     ),
diff --git a/lib/parts/dday_hero.dart b/lib/parts/dday_hero.dart
index acdce9b..3c54c06 100644
--- a/lib/parts/dday_hero.dart
+++ b/lib/parts/dday_hero.dart
@@ -8,6 +8,7 @@ import '../data/models.dart';
 import '../theme/tokens.dart';
 import '../widgets/dk_badge.dart';
 import '../widgets/dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// D-Day 히어로 카드. 프로토타입 `DdayHero`.
 ///
@@ -67,7 +68,7 @@ class DdayHero extends StatelessWidget {
                           event.category,
                           style: const TextStyle(
                             fontFamily: 'Pretendard',
-                            fontSize: 12.5,
+                            fontSize: SeedType.caption,
                             fontWeight: FontWeight.w600,
                             color: Color(0xB3FFFFFF),
                           ),
@@ -104,7 +105,7 @@ class DdayHero extends StatelessWidget {
                                 overflow: TextOverflow.ellipsis,
                                 style: const TextStyle(
                                   fontFamily: 'Pretendard',
-                                  fontSize: 16,
+                                  fontSize: SeedType.bodyLg,
                                   fontWeight: FontWeight.w600,
                                   color: Color(0xE0FFFFFF),
                                 ),
@@ -114,7 +115,7 @@ class DdayHero extends StatelessWidget {
                                 eventDateLabel(event),
                                 style: const TextStyle(
                                   fontFamily: 'Pretendard',
-                                  fontSize: 13,
+                                  fontSize: SeedType.label,
                                   color: Color(0x99FFFFFF),
                                 ),
                               ),
diff --git a/lib/parts/metric_bar.dart b/lib/parts/metric_bar.dart
index b3e9bd2..5522ad5 100644
--- a/lib/parts/metric_bar.dart
+++ b/lib/parts/metric_bar.dart
@@ -4,6 +4,7 @@ import '../data/models.dart';
 import '../theme/tokens.dart';
 import '../widgets/dk_card.dart';
 import '../widgets/dk_feedback.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 주간 지표 막대. 프로토타입 `MetricBar`.
 ///
@@ -46,7 +47,7 @@ class MetricBar extends StatelessWidget {
           ),
           const SizedBox(height: 14),
           ClipRRect(
-            borderRadius: BorderRadius.circular(99),
+            borderRadius: BorderRadius.circular(SeedRadius.pill),
             child: Stack(
               children: <Widget>[
                 Container(height: 10, color: t.bgPress),
@@ -61,7 +62,7 @@ class MetricBar extends StatelessWidget {
                         width: c.maxWidth * v,
                         decoration: BoxDecoration(
                           color: t.success,
-                          borderRadius: BorderRadius.circular(99),
+                          borderRadius: BorderRadius.circular(SeedRadius.pill),
                         ),
                       ),
                     );
@@ -75,7 +76,7 @@ class MetricBar extends StatelessWidget {
             TextSpan(
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12.5,
+                fontSize: SeedType.caption,
                 fontWeight: FontWeight.w500,
                 color: t.fgSubtle,
               ),
@@ -130,7 +131,7 @@ class MetricBar extends StatelessWidget {
                 decimals: isInt ? 0 : 1,
                 style: TextStyle(
                   fontFamily: 'WantedSans',
-                  fontSize: 25,
+                  fontSize: SeedType.heading,
                   fontWeight: FontWeight.w800,
                   letterSpacing: -0.75,
                   color: color,
@@ -141,7 +142,7 @@ class MetricBar extends StatelessWidget {
                 '시간',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 13,
+                  fontSize: SeedType.label,
                   fontWeight: FontWeight.w600,
                   color: t.fgSubtle,
                 ),
@@ -153,7 +154,7 @@ class MetricBar extends StatelessWidget {
             label,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 12.5,
+              fontSize: SeedType.caption,
               fontWeight: FontWeight.w500,
               color: t.fgSubtle,
             ),
diff --git a/lib/parts/task_row.dart b/lib/parts/task_row.dart
index 08d0b74..87e25f9 100644
--- a/lib/parts/task_row.dart
+++ b/lib/parts/task_row.dart
@@ -6,6 +6,7 @@ import '../data/models.dart';
 import '../theme/tokens.dart';
 import '../widgets/dk_badge.dart';
 import '../widgets/dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 완료 체크박스 26 radius 9. done이면 success 채움 + check.
 class DkCheckbox extends StatelessWidget {
@@ -28,7 +29,7 @@ class DkCheckbox extends StatelessWidget {
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: done ? t.success : const Color(0x00000000),
-          borderRadius: BorderRadius.circular(9),
+          borderRadius: BorderRadius.circular(SeedRadius.chip),
           border: done ? null : Border.all(color: t.borderStrong, width: 2),
         ),
         child: done
@@ -80,7 +81,7 @@ class TaskRow extends StatelessWidget {
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 13),
         decoration: BoxDecoration(
           color: t.bg,
-          borderRadius: BorderRadius.circular(16),
+          borderRadius: BorderRadius.circular(SeedRadius.md),
           border: Border.all(color: t.borderSubtle),
           boxShadow: t.shadows.s1,
         ),
@@ -101,7 +102,7 @@ class TaskRow extends StatelessWidget {
                     overflow: TextOverflow.ellipsis,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 15,
+                      fontSize: SeedType.base,
                       fontWeight: FontWeight.w600,
                       letterSpacing: -0.15,
                       color: done ? t.fgDisabled : t.fg,
@@ -148,7 +149,7 @@ class TaskRow extends StatelessWidget {
           fmtMins(task.mins),
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 12.5,
+            fontSize: SeedType.caption,
             fontWeight: FontWeight.w500,
             color: t.fgSubtle,
           ),
@@ -176,7 +177,7 @@ class TaskRow extends StatelessWidget {
             overflow: TextOverflow.ellipsis,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 12.5,
+              fontSize: SeedType.caption,
               fontWeight: FontWeight.w600,
               color: h.color,
             ),
@@ -190,7 +191,7 @@ class TaskRow extends StatelessWidget {
               overflow: TextOverflow.ellipsis,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12,
+                fontSize: SeedType.caption,
                 fontWeight: FontWeight.w500,
                 color: t.infoFg,
               ),
diff --git a/lib/screens/auth_loading.dart b/lib/screens/auth_loading.dart
index 3a5c074..2653bfb 100644
--- a/lib/screens/auth_loading.dart
+++ b/lib/screens/auth_loading.dart
@@ -2,6 +2,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import '../widgets/dk_logo.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 로그인(외부 OAuth 복귀 → server provisioning) 중 표시하는 **브랜드 로딩 화면**.
 ///
@@ -52,7 +53,7 @@ class _AuthLoadingViewState extends State<AuthLoadingView>
             widget.message,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 14.5,
+              fontSize: SeedType.body,
               fontWeight: FontWeight.w600,
               color: t.fgSubtle,
             ),
diff --git a/lib/screens/calc_sheet.dart b/lib/screens/calc_sheet.dart
index 356f3cb..2756702 100644
--- a/lib/screens/calc_sheet.dart
+++ b/lib/screens/calc_sheet.dart
@@ -5,6 +5,7 @@ import '../theme/tokens.dart';
 import '../widgets/dk_icon.dart';
 import '../widgets/dk_segmented.dart';
 import '../widgets/dk_sheet.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 계산기 본문(일반 + 공학). 프로토타입 `Calculator`.
 ///
@@ -154,14 +155,14 @@ class _CalculatorState extends State<Calculator> {
                   ),
                   decoration: BoxDecoration(
                     color: t.bg,
-                    borderRadius: BorderRadius.circular(99),
+                    borderRadius: BorderRadius.circular(SeedRadius.pill),
                     border: Border.all(color: t.border, width: 1.5),
                   ),
                   child: Text(
                     _deg ? 'DEG' : 'RAD',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 13,
+                      fontSize: SeedType.label,
                       fontWeight: FontWeight.w700,
                       color: t.fgMuted,
                     ),
@@ -192,7 +193,7 @@ class _CalculatorState extends State<Calculator> {
                 overflow: TextOverflow.ellipsis,
                 style: TextStyle(
                   fontFamily: 'WantedSans',
-                  fontSize: 34,
+                  fontSize: SeedType.stat,
                   fontWeight: FontWeight.w700,
                   letterSpacing: -1.02,
                   height: 1.1,
@@ -206,7 +207,7 @@ class _CalculatorState extends State<Calculator> {
                   (preview != null && !_justEq && !endsOp) ? '= $preview' : '',
                   style: TextStyle(
                     fontFamily: 'WantedSans',
-                    fontSize: 16,
+                    fontSize: SeedType.bodyLg,
                     fontWeight: FontWeight.w600,
                     color: t.fgSubtle,
                   ),
@@ -423,7 +424,7 @@ class _CalcButtonState extends State<_CalcButton> {
           alignment: Alignment.center,
           decoration: BoxDecoration(
             color: c.bg,
-            borderRadius: BorderRadius.circular(16),
+            borderRadius: BorderRadius.circular(SeedRadius.md),
           ),
           child: widget.spec.icon != null
               ? DkIcon(widget.spec.icon!, size: 22, color: c.fg)
diff --git a/lib/screens/debt/debt_screen.dart b/lib/screens/debt/debt_screen.dart
index 9aee6a9..66e5857 100644
--- a/lib/screens/debt/debt_screen.dart
+++ b/lib/screens/debt/debt_screen.dart
@@ -10,6 +10,7 @@ import '../../widgets/dk_card.dart';
 import '../../widgets/dk_empty.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_section.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 미룬 시간 상세 서브화면. 프로토타입 `DebtScreen`.
 ///
@@ -112,7 +113,7 @@ class _DebtScreenState extends State<DebtScreen> {
                   textAlign: TextAlign.center,
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12.5,
+                    fontSize: SeedType.caption,
                     height: 1.6,
                     color: t.fgSubtle,
                   ),
@@ -138,7 +139,7 @@ class _DebtScreenState extends State<DebtScreen> {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: t.bgPress,
-                borderRadius: BorderRadius.circular(12),
+                borderRadius: BorderRadius.circular(SeedRadius.sm),
               ),
               child: DkIcon('chevL', size: 22, color: t.fg),
             ),
@@ -148,7 +149,7 @@ class _DebtScreenState extends State<DebtScreen> {
             '미룬 시간',
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 22,
+              fontSize: SeedType.title,
               fontWeight: FontWeight.w800,
               letterSpacing: -0.66,
               color: t.fgStrong,
@@ -184,7 +185,7 @@ class _DebtScreenState extends State<DebtScreen> {
               '아직 못 한 일, 사라지지 않아요',
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 13.5,
+                fontSize: SeedType.label,
                 fontWeight: FontWeight.w600,
                 color: Color(0xD1FFFFFF),
               ),
@@ -210,7 +211,7 @@ class _DebtScreenState extends State<DebtScreen> {
                   '시간',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 17,
+                    fontSize: SeedType.bodyLg,
                     fontWeight: FontWeight.w600,
                     color: white,
                   ),
@@ -244,7 +245,7 @@ class _DebtScreenState extends State<DebtScreen> {
           label,
           style: const TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 12.5,
+            fontSize: SeedType.caption,
             color: Color(0xB3FFFFFF),
           ),
         ),
@@ -253,7 +254,7 @@ class _DebtScreenState extends State<DebtScreen> {
           value,
           style: const TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 16,
+            fontSize: SeedType.bodyLg,
             fontWeight: FontWeight.w700,
             color: Color(0xFFFFFFFF),
           ),
@@ -278,7 +279,7 @@ class _DebtScreenState extends State<DebtScreen> {
                   overflow: TextOverflow.ellipsis,
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 15,
+                    fontSize: SeedType.base,
                     fontWeight: FontWeight.w700,
                     letterSpacing: -0.15,
                     color: t.fg,
@@ -294,7 +295,7 @@ class _DebtScreenState extends State<DebtScreen> {
             TextSpan(
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12.5,
+                fontSize: SeedType.caption,
                 fontWeight: FontWeight.w500,
                 color: t.fgSubtle,
               ),
diff --git a/lib/screens/focus/focus_screen.dart b/lib/screens/focus/focus_screen.dart
index 2d36d96..75bc1c7 100644
--- a/lib/screens/focus/focus_screen.dart
+++ b/lib/screens/focus/focus_screen.dart
@@ -17,6 +17,7 @@ import '../me/settings_dialogs.dart';
 import '../me/settings_section.dart';
 import 'focus_controller.dart';
 import 'skins.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 const String _prefsKey = 'dk_focus';
 
@@ -194,7 +195,7 @@ class _FocusScreenState extends State<FocusScreen> {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: t.primarySubtle,
-                borderRadius: BorderRadius.circular(14),
+                borderRadius: BorderRadius.circular(SeedRadius.button),
               ),
               child: DkIcon(
                 'sliders',
@@ -229,7 +230,7 @@ class _FocusScreenState extends State<FocusScreen> {
                     '스킨',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w700,
                       letterSpacing: 0.48,
                       color: t.fgSubtle,
@@ -291,7 +292,7 @@ class _FocusScreenState extends State<FocusScreen> {
           '태스크에서 "집중 시작"으로 연결할 수 있어요',
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 13.5,
+            fontSize: SeedType.label,
             fontWeight: FontWeight.w500,
             color: t.fgSubtle,
           ),
@@ -303,7 +304,7 @@ class _FocusScreenState extends State<FocusScreen> {
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 9),
         decoration: BoxDecoration(
           color: Color.lerp(modeColor, t.bg, 0.88),
-          borderRadius: BorderRadius.circular(99),
+          borderRadius: BorderRadius.circular(SeedRadius.pill),
         ),
         child: Row(
           mainAxisSize: MainAxisSize.min,
@@ -316,7 +317,7 @@ class _FocusScreenState extends State<FocusScreen> {
                 overflow: TextOverflow.ellipsis,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 13.5,
+                  fontSize: SeedType.label,
                   fontWeight: FontWeight.w600,
                   color: modeColor,
                 ),
@@ -409,7 +410,7 @@ class _FocusScreenState extends State<FocusScreen> {
             alignment: Alignment.center,
             decoration: BoxDecoration(
               color: t.success,
-              borderRadius: BorderRadius.circular(13),
+              borderRadius: BorderRadius.circular(SeedRadius.button),
             ),
             child: const DkIcon(
               'check',
@@ -427,7 +428,7 @@ class _FocusScreenState extends State<FocusScreen> {
                   '집중을 마쳤어요',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 14,
+                    fontSize: SeedType.body,
                     fontWeight: FontWeight.w700,
                     color: t.successFg,
                   ),
@@ -438,7 +439,7 @@ class _FocusScreenState extends State<FocusScreen> {
                   overflow: TextOverflow.ellipsis,
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12.5,
+                    fontSize: SeedType.caption,
                     fontWeight: FontWeight.w500,
                     color: t.fgMuted,
                   ),
@@ -479,7 +480,7 @@ class _FocusScreenState extends State<FocusScreen> {
                 '오늘 집중',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 15,
+                  fontSize: SeedType.base,
                   fontWeight: FontWeight.w700,
                   letterSpacing: -0.3,
                   color: t.fg,
@@ -489,7 +490,7 @@ class _FocusScreenState extends State<FocusScreen> {
                 '${_c.sessions} / $goal회',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 13,
+                  fontSize: SeedType.label,
                   fontWeight: FontWeight.w600,
                   color: t.fgSubtle,
                 ),
@@ -507,7 +508,7 @@ class _FocusScreenState extends State<FocusScreen> {
                     alignment: Alignment.center,
                     decoration: BoxDecoration(
                       color: i < _c.sessions ? modeColor : t.bgPress,
-                      borderRadius: BorderRadius.circular(12),
+                      borderRadius: BorderRadius.circular(SeedRadius.sm),
                     ),
                     child: DkIcon(
                       'focus',
@@ -533,7 +534,7 @@ class _FocusScreenState extends State<FocusScreen> {
                   '누적 ${fmtMins(_c.sessions * widget.settings.pomodoroFocus)} 집중 · 4회마다 긴 휴식을 권해요',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12.5,
+                    fontSize: SeedType.caption,
                     fontWeight: FontWeight.w500,
                     color: t.fgSubtle,
                   ),
diff --git a/lib/screens/focus/skins.dart b/lib/screens/focus/skins.dart
index 12ed96c..2fd129d 100644
--- a/lib/screens/focus/skins.dart
+++ b/lib/screens/focus/skins.dart
@@ -4,6 +4,7 @@ import 'package:flutter/widgets.dart';
 
 import '../../theme/tokens.dart';
 import '../../widgets/dk_ring.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 스킨 공통 프로퍼티.
 class FocusSkinProps {
@@ -77,7 +78,7 @@ class SkinMinimal extends StatelessWidget {
             props.stateText,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 14,
+              fontSize: SeedType.body,
               fontWeight: FontWeight.w700,
               letterSpacing: 0.56,
               color: props.color,
@@ -101,14 +102,14 @@ class SkinMinimal extends StatelessWidget {
             props.sub,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 14,
+              fontSize: SeedType.body,
               fontWeight: FontWeight.w600,
               color: t.fgSubtle,
             ),
           ),
           const SizedBox(height: 12),
           ClipRRect(
-            borderRadius: BorderRadius.circular(99),
+            borderRadius: BorderRadius.circular(SeedRadius.pill),
             child: SizedBox(
               width: 220,
               height: 5,
@@ -236,7 +237,7 @@ class SkinFlip extends StatelessWidget {
             props.stateText,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 14,
+              fontSize: SeedType.body,
               fontWeight: FontWeight.w700,
               letterSpacing: 0.56,
               color: props.color,
@@ -271,7 +272,7 @@ class SkinFlip extends StatelessWidget {
             props.sub,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 14,
+              fontSize: SeedType.body,
               fontWeight: FontWeight.w600,
               color: t.fgSubtle,
             ),
@@ -291,14 +292,14 @@ class _FlipDigit extends StatelessWidget {
   Widget build(BuildContext context) {
     final DkTokens t = DkTheme.of(context);
     return ClipRRect(
-      borderRadius: BorderRadius.circular(14),
+      borderRadius: BorderRadius.circular(SeedRadius.button),
       child: Container(
         width: 56,
         height: 78,
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: t.fgStrong,
-          borderRadius: BorderRadius.circular(14),
+          borderRadius: BorderRadius.circular(SeedRadius.button),
           boxShadow: t.shadows.s2,
         ),
         child: Stack(
@@ -366,7 +367,7 @@ class _Readout extends StatelessWidget {
           props.stateText,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 13.5,
+            fontSize: SeedType.label,
             fontWeight: FontWeight.w700,
             letterSpacing: 0.27,
             color: stateColor,
@@ -390,7 +391,7 @@ class _Readout extends StatelessWidget {
           props.sub,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 13,
+            fontSize: SeedType.label,
             fontWeight: FontWeight.w600,
             color: t.fgSubtle,
           ),
diff --git a/lib/screens/loading_skeleton.dart b/lib/screens/loading_skeleton.dart
index 28ff31d..e8861dc 100644
--- a/lib/screens/loading_skeleton.dart
+++ b/lib/screens/loading_skeleton.dart
@@ -2,6 +2,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import '../widgets/dk_skeleton.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 초기 데이터 로딩 화면(토스·당근 스타일 스켈레톤). 밋밋한 "불러오는 중…" 텍스트 대신
 /// 최종 레이아웃(인사·제목 → 요약 카드 → 할 일 리스트)의 윤곽을 회색 플레이스홀더 + shimmer 로 보여준다.
@@ -55,7 +56,7 @@ class _RowSkeleton extends StatelessWidget {
       padding: const EdgeInsets.symmetric(horizontal: 16),
       decoration: BoxDecoration(
         color: t.bg,
-        borderRadius: BorderRadius.circular(14),
+        borderRadius: BorderRadius.circular(SeedRadius.button),
         border: Border.all(color: t.borderSubtle),
       ),
       child: Row(
diff --git a/lib/screens/login.dart b/lib/screens/login.dart
index 8df55bf..37b80ea 100644
--- a/lib/screens/login.dart
+++ b/lib/screens/login.dart
@@ -190,7 +190,7 @@ class _LoginScreenState extends State<LoginScreen> {
           height: 54,
           decoration: BoxDecoration(
             color: s.bg,
-            borderRadius: BorderRadius.circular(15),
+            borderRadius: BorderRadius.circular(SeedRadius.md),
             border: s.bordered ? Border.all(color: t.border, width: 1.5) : null,
           ),
           child: Stack(
@@ -200,7 +200,7 @@ class _LoginScreenState extends State<LoginScreen> {
                 isBusy ? '연결 중…' : s.label,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 15.5,
+                  fontSize: SeedType.base,
                   fontWeight: FontWeight.w700,
                   letterSpacing: -0.155,
                   color: s.fg,
@@ -248,7 +248,7 @@ class _Hero extends StatelessWidget {
           textAlign: TextAlign.center,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 25,
+            fontSize: SeedType.heading,
             fontWeight: FontWeight.w800,
             letterSpacing: -0.75,
             height: 1.3,
@@ -261,7 +261,7 @@ class _Hero extends StatelessWidget {
           textAlign: TextAlign.center,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 14.5,
+            fontSize: SeedType.body,
             fontWeight: FontWeight.w500,
             height: 1.55,
             color: t.fgSubtle,
@@ -281,7 +281,7 @@ class _LegalNote extends StatelessWidget {
     final DkTokens t = DkTheme.of(context);
     final TextStyle base = TextStyle(
       fontFamily: 'Pretendard',
-      fontSize: 12,
+      fontSize: SeedType.caption,
       fontWeight: FontWeight.w500,
       height: 1.6,
       color: t.fgSubtle,
@@ -320,13 +320,13 @@ class _ErrorBanner extends StatelessWidget {
       padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
       decoration: BoxDecoration(
         color: t.dangerSubtle,
-        borderRadius: BorderRadius.circular(12),
+        borderRadius: BorderRadius.circular(SeedRadius.sm),
       ),
       child: Text(
         message,
         style: TextStyle(
           fontFamily: 'Pretendard',
-          fontSize: 13.5,
+          fontSize: SeedType.label,
           fontWeight: FontWeight.w600,
           color: t.danger,
         ),
diff --git a/lib/screens/me/calendar_sync_screen.dart b/lib/screens/me/calendar_sync_screen.dart
index 55e2936..aa9ff5a 100644
--- a/lib/screens/me/calendar_sync_screen.dart
+++ b/lib/screens/me/calendar_sync_screen.dart
@@ -9,6 +9,7 @@ import '../../widgets/dk_brand_mark.dart';
 import '../../widgets/dk_button.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_section.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 캘린더 연동 설정 서브화면(나>설정>캘린더 연동, 이슈 #59 / FRD 4.12).
 ///
@@ -91,7 +92,7 @@ class CalendarSyncScreen extends StatelessWidget {
                 textAlign: TextAlign.center,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 12.5,
+                  fontSize: SeedType.caption,
                   height: 1.6,
                   color: t.fgSubtle,
                 ),
@@ -107,7 +108,7 @@ class CalendarSyncScreen extends StatelessWidget {
     padding: const EdgeInsets.all(18),
     decoration: BoxDecoration(
       color: t.primarySubtle,
-      borderRadius: BorderRadius.circular(16),
+      borderRadius: BorderRadius.circular(SeedRadius.md),
     ),
     child: Row(
       children: <Widget>[
@@ -118,7 +119,7 @@ class CalendarSyncScreen extends StatelessWidget {
             '연결된 캘린더가 없어요. 제공자를 연결하면 외부 일정을 한 화면에서 볼 수 있어요.',
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 13.5,
+              fontSize: SeedType.label,
               height: 1.5,
               fontWeight: FontWeight.w600,
               color: t.primary,
@@ -136,7 +137,7 @@ class CalendarSyncScreen extends StatelessWidget {
       padding: const EdgeInsets.fromLTRB(16, 14, 16, 14),
       decoration: BoxDecoration(
         color: t.bg,
-        borderRadius: BorderRadius.circular(16),
+        borderRadius: BorderRadius.circular(SeedRadius.md),
         border: Border.all(color: t.borderSubtle),
         boxShadow: t.shadows.s1,
       ),
@@ -155,7 +156,7 @@ class CalendarSyncScreen extends StatelessWidget {
                   alignment: Alignment.center,
                   decoration: BoxDecoration(
                     color: meta.color.withValues(alpha: 0.14),
-                    borderRadius: BorderRadius.circular(11),
+                    borderRadius: BorderRadius.circular(SeedRadius.sm),
                   ),
                   child: Container(
                     width: 12,
@@ -175,7 +176,7 @@ class CalendarSyncScreen extends StatelessWidget {
                       meta.label,
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 15,
+                        fontSize: SeedType.base,
                         fontWeight: FontWeight.w700,
                         color: t.fg,
                       ),
@@ -185,7 +186,7 @@ class CalendarSyncScreen extends StatelessWidget {
                       _subtitle(conn),
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 12.5,
+                        fontSize: SeedType.caption,
                         color: t.fgSubtle,
                       ),
                     ),
@@ -255,7 +256,7 @@ class CalendarSyncScreen extends StatelessWidget {
             alignment: Alignment.center,
             decoration: BoxDecoration(
               color: t.bgPress,
-              borderRadius: BorderRadius.circular(12),
+              borderRadius: BorderRadius.circular(SeedRadius.sm),
             ),
             child: DkIcon('chevL', size: 22, color: t.fg),
           ),
@@ -265,7 +266,7 @@ class CalendarSyncScreen extends StatelessWidget {
           '캘린더 연동',
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 22,
+            fontSize: SeedType.title,
             fontWeight: FontWeight.w800,
             letterSpacing: -0.66,
             color: t.fgStrong,
diff --git a/lib/screens/me/linked_accounts_section.dart b/lib/screens/me/linked_accounts_section.dart
index bf674a6..8181c90 100644
--- a/lib/screens/me/linked_accounts_section.dart
+++ b/lib/screens/me/linked_accounts_section.dart
@@ -5,6 +5,7 @@ import '../../theme/tokens.dart';
 import '../../widgets/dk_brand_mark.dart';
 import '../../widgets/dk_button.dart';
 import 'settings_dialogs.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 나 탭 '연동 계정' 섹션(이슈 #10, ADR-0014).
 ///
@@ -92,7 +93,7 @@ class _LinkedAccountsSectionState extends State<LinkedAccountsSection> {
       padding: const EdgeInsets.all(16),
       decoration: BoxDecoration(
         color: t.bg,
-        borderRadius: BorderRadius.circular(16),
+        borderRadius: BorderRadius.circular(SeedRadius.md),
         border: Border.all(color: t.borderSubtle),
       ),
       child: Column(
@@ -102,7 +103,7 @@ class _LinkedAccountsSectionState extends State<LinkedAccountsSection> {
             '연동 계정',
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 16,
+              fontSize: SeedType.bodyLg,
               fontWeight: FontWeight.w800,
               color: t.fgStrong,
             ),
@@ -112,7 +113,7 @@ class _LinkedAccountsSectionState extends State<LinkedAccountsSection> {
             '로그인에 사용할 소셜 계정을 연결하거나 해제할 수 있어요.',
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 13,
+              fontSize: SeedType.label,
               color: t.fgMuted,
             ),
           ),
@@ -128,7 +129,7 @@ class _LinkedAccountsSectionState extends State<LinkedAccountsSection> {
               _error!,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12.5,
+                fontSize: SeedType.caption,
                 color: t.danger,
               ),
             ),
@@ -187,7 +188,7 @@ class _LinkedAccountsSectionState extends State<LinkedAccountsSection> {
             label,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 15,
+              fontSize: SeedType.base,
               fontWeight: FontWeight.w600,
               color: t.fg,
             ),
@@ -203,13 +204,13 @@ class _LinkedAccountsSectionState extends State<LinkedAccountsSection> {
       padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
       decoration: BoxDecoration(
         color: t.bgSubtle,
-        borderRadius: BorderRadius.circular(8),
+        borderRadius: BorderRadius.circular(SeedRadius.chip),
       ),
       child: Text(
         text,
         style: TextStyle(
           fontFamily: 'Pretendard',
-          fontSize: 12.5,
+          fontSize: SeedType.caption,
           fontWeight: FontWeight.w600,
           color: t.fgMuted,
         ),
diff --git a/lib/screens/me/me_screen.dart b/lib/screens/me/me_screen.dart
index b4519b7..6868506 100644
--- a/lib/screens/me/me_screen.dart
+++ b/lib/screens/me/me_screen.dart
@@ -12,6 +12,7 @@ import '../../widgets/dk_icon.dart';
 import 'linked_accounts_section.dart';
 import 'settings_dialogs.dart';
 import 'settings_section.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 나 탭. 프로토타입 `MeScreen`.
 ///
@@ -231,7 +232,7 @@ class MeScreen extends StatelessWidget {
                   user.nickname,
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 20,
+                    fontSize: SeedType.title,
                     fontWeight: FontWeight.w800,
                     letterSpacing: -0.6,
                     color: t.fgStrong,
@@ -242,7 +243,7 @@ class MeScreen extends StatelessWidget {
                   user.email ?? '이메일 미등록',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 13,
+                    fontSize: SeedType.label,
                     color: t.fgSubtle,
                   ),
                 ),
@@ -299,7 +300,7 @@ class MeScreen extends StatelessWidget {
               suffix: suffix,
               style: TextStyle(
                 fontFamily: 'WantedSans',
-                fontSize: 22,
+                fontSize: SeedType.title,
                 fontWeight: FontWeight.w800,
                 letterSpacing: -0.66,
                 color: t.fgStrong,
@@ -310,7 +311,7 @@ class MeScreen extends StatelessWidget {
               label,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 11.5,
+                fontSize: SeedType.caption,
                 fontWeight: FontWeight.w600,
                 color: t.fgSubtle,
               ),
diff --git a/lib/screens/me/settings_dialogs.dart b/lib/screens/me/settings_dialogs.dart
index 9667998..29dc6e0 100644
--- a/lib/screens/me/settings_dialogs.dart
+++ b/lib/screens/me/settings_dialogs.dart
@@ -5,6 +5,7 @@ import '../../widgets/dk_alert.dart';
 import '../../widgets/dk_button.dart';
 import '../../widgets/dk_sheet.dart';
 import '../sheets/sheet_fields.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 계정/설정 다이얼로그 모음(이슈 #56) — 프로필 수정·값 선택·2단계 탈퇴 확인.
 ///
@@ -70,7 +71,7 @@ class _ProfileEditFormState extends State<_ProfileEditForm> {
             '닉네임',
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 13,
+              fontSize: SeedType.label,
               fontWeight: FontWeight.w600,
               color: t.fgSubtle,
             ),
@@ -236,7 +237,7 @@ Future<T?> _showOptionPicker<T>(
                   ),
                   decoration: BoxDecoration(
                     color: opt.value == current ? t.primarySubtle : t.bg,
-                    borderRadius: BorderRadius.circular(14),
+                    borderRadius: BorderRadius.circular(SeedRadius.button),
                     border: Border.all(
                       color: opt.value == current ? t.primary : t.borderSubtle,
                       width: opt.value == current ? 1.5 : 1,
@@ -246,7 +247,7 @@ Future<T?> _showOptionPicker<T>(
                     opt.label,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 15,
+                      fontSize: SeedType.base,
                       fontWeight: FontWeight.w600,
                       // 옵션 강조색(예: 일요일 빨강)이 있으면 선택 여부와 무관하게 우선.
                       color:
@@ -283,7 +284,7 @@ Future<bool?> _showConfirm(
               body,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 14.5,
+                fontSize: SeedType.body,
                 height: 1.45,
                 color: t.fgSubtle,
               ),
diff --git a/lib/screens/me/settings_section.dart b/lib/screens/me/settings_section.dart
index 3d2b1a8..7ca9477 100644
--- a/lib/screens/me/settings_section.dart
+++ b/lib/screens/me/settings_section.dart
@@ -7,6 +7,7 @@ import '../../theme/tokens.dart';
 import '../../widgets/dk_badge.dart';
 import '../../widgets/dk_icon.dart';
 import 'settings_dialogs.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 토글 스위치. 프로토타입 `Toggle`: 48×28 pill(on=primary), 노브 24 흰색.
 class DkToggle extends StatelessWidget {
@@ -28,7 +29,7 @@ class DkToggle extends StatelessWidget {
         alignment: value ? Alignment.centerRight : Alignment.centerLeft,
         decoration: BoxDecoration(
           color: value ? t.primary : t.borderStrong,
-          borderRadius: BorderRadius.circular(99),
+          borderRadius: BorderRadius.circular(SeedRadius.pill),
         ),
         child: Container(
           width: 24,
@@ -70,7 +71,7 @@ class SettingGroup extends StatelessWidget {
               title!,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12.5,
+                fontSize: SeedType.caption,
                 fontWeight: FontWeight.w700,
                 letterSpacing: 0.38,
                 color: t.fgSubtle,
@@ -158,7 +159,7 @@ class SettingRow extends StatelessWidget {
                 alignment: Alignment.center,
                 decoration: BoxDecoration(
                   color: comingSoon ? t.bgSubtle : (iconBg ?? t.bgPress),
-                  borderRadius: BorderRadius.circular(10),
+                  borderRadius: BorderRadius.circular(SeedRadius.sm),
                 ),
                 child: DkIcon(
                   icon!,
@@ -174,7 +175,7 @@ class SettingRow extends StatelessWidget {
                 label,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 15,
+                  fontSize: SeedType.base,
                   fontWeight: FontWeight.w500,
                   color: labelColor,
                 ),
@@ -192,7 +193,7 @@ class SettingRow extends StatelessWidget {
                   value!,
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 14,
+                    fontSize: SeedType.body,
                     fontWeight: FontWeight.w500,
                     color: valueColor ?? t.fgSubtle,
                   ),
@@ -413,7 +414,7 @@ class _AppVersionLabelState extends State<_AppVersionLabel> {
       label,
       style: TextStyle(
         fontFamily: 'Pretendard',
-        fontSize: 12,
+        fontSize: SeedType.caption,
         fontWeight: FontWeight.w500,
         color: t.fgDisabled,
       ),
diff --git a/lib/screens/nickname_setup_screen.dart b/lib/screens/nickname_setup_screen.dart
index 5bab7bb..ce90b50 100644
--- a/lib/screens/nickname_setup_screen.dart
+++ b/lib/screens/nickname_setup_screen.dart
@@ -5,6 +5,7 @@ import '../theme/tokens.dart';
 import '../widgets/dk_button.dart';
 import '../widgets/dk_logo.dart';
 import 'sheets/sheet_fields.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 신규 가입 직후 닉네임 설정 화면(모든 provider 공통).
 ///
@@ -91,7 +92,7 @@ class _NicknameSetupScreenState extends State<NicknameSetupScreen> {
                 '닉네임을 정해주세요',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 24,
+                  fontSize: SeedType.heading,
                   fontWeight: FontWeight.w800,
                   letterSpacing: -0.03 * 24,
                   color: t.fgStrong,
@@ -102,7 +103,7 @@ class _NicknameSetupScreenState extends State<NicknameSetupScreen> {
                 '이어서에서 사용할 이름이에요. 추천 닉네임을 그대로 쓰거나 바꿔도 좋아요.',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 14.5,
+                  fontSize: SeedType.body,
                   height: 1.5,
                   color: t.fgSubtle,
                 ),
@@ -122,7 +123,7 @@ class _NicknameSetupScreenState extends State<NicknameSetupScreen> {
                     '🎲 다른 닉네임 추천',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 13.5,
+                      fontSize: SeedType.label,
                       fontWeight: FontWeight.w600,
                       color: t.primary,
                     ),
@@ -135,7 +136,7 @@ class _NicknameSetupScreenState extends State<NicknameSetupScreen> {
                   '닉네임 저장에 실패했어요. 잠시 후 다시 시도해 주세요.',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12.5,
+                    fontSize: SeedType.caption,
                     color: t.danger,
                   ),
                 ),
@@ -146,7 +147,7 @@ class _NicknameSetupScreenState extends State<NicknameSetupScreen> {
                 textAlign: TextAlign.center,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 12.5,
+                  fontSize: SeedType.caption,
                   color: t.fgMuted,
                 ),
               ),
diff --git a/lib/screens/onboarding.dart b/lib/screens/onboarding.dart
index cc6edae..b375dfe 100644
--- a/lib/screens/onboarding.dart
+++ b/lib/screens/onboarding.dart
@@ -63,7 +63,7 @@ class _OnboardingScreenState extends State<OnboardingScreen> {
                     '건너뛰기',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 14.5,
+                      fontSize: SeedType.body,
                       fontWeight: FontWeight.w600,
                       color: t.fgSubtle,
                     ),
@@ -94,7 +94,7 @@ class _OnboardingScreenState extends State<OnboardingScreen> {
                     textAlign: TextAlign.center,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 15.5,
+                      fontSize: SeedType.base,
                       height: 1.6,
                       fontWeight: FontWeight.w500,
                       color: t.fgSubtle,
@@ -114,7 +114,7 @@ class _OnboardingScreenState extends State<OnboardingScreen> {
                     height: 7,
                     decoration: BoxDecoration(
                       color: i == _step ? t.primary : t.borderStrong,
-                      borderRadius: BorderRadius.circular(99),
+                      borderRadius: BorderRadius.circular(SeedRadius.pill),
                     ),
                   ),
               ],
@@ -178,7 +178,7 @@ class OnbArt extends StatelessWidget {
                   '정보처리기사',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 13,
+                    fontSize: SeedType.label,
                     fontWeight: FontWeight.w600,
                     color: const Color(0xFFFFFFFF).withValues(alpha: 0.7),
                   ),
@@ -217,14 +217,14 @@ class OnbArt extends StatelessWidget {
       padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
       decoration: BoxDecoration(
         color: t.bg,
-        borderRadius: BorderRadius.circular(16),
+        borderRadius: BorderRadius.circular(SeedRadius.md),
         boxShadow: t.shadows.s2,
       ),
       child: Text(
         label,
         style: TextStyle(
           fontFamily: 'Pretendard',
-          fontSize: 13,
+          fontSize: SeedType.label,
           fontWeight: FontWeight.w700,
           color: color,
         ),
@@ -246,7 +246,7 @@ class OnbArt extends StatelessWidget {
                 '월요일',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 13,
+                  fontSize: SeedType.label,
                   fontWeight: FontWeight.w700,
                   color: t.fgSubtle,
                 ),
@@ -264,7 +264,7 @@ class OnbArt extends StatelessWidget {
                   '비었어요',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12,
+                    fontSize: SeedType.caption,
                     fontWeight: FontWeight.w600,
                     color: t.fgDisabled,
                   ),
@@ -288,7 +288,7 @@ class OnbArt extends StatelessWidget {
                 '토요일',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 13,
+                  fontSize: SeedType.label,
                   fontWeight: FontWeight.w700,
                   color: t.primary,
                 ),
@@ -318,7 +318,7 @@ class OnbArt extends StatelessWidget {
                       textAlign: TextAlign.center,
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 12,
+                        fontSize: SeedType.caption,
                         fontWeight: FontWeight.w700,
                         color: Color(0xFFFFFFFF),
                       ),
@@ -389,7 +389,7 @@ class OnbArt extends StatelessWidget {
                   Container(
                     decoration: BoxDecoration(
                       color: c ?? t.bgPress,
-                      borderRadius: BorderRadius.circular(7),
+                      borderRadius: BorderRadius.circular(SeedRadius.chip),
                     ),
                   ),
               ],
@@ -420,7 +420,7 @@ class OnbArt extends StatelessWidget {
       padding: const EdgeInsets.fromLTRB(5, 4, 9, 4),
       decoration: BoxDecoration(
         color: t.bg,
-        borderRadius: BorderRadius.circular(99),
+        borderRadius: BorderRadius.circular(SeedRadius.pill),
         boxShadow: t.shadows.s1,
       ),
       child: Row(
diff --git a/lib/screens/plan/calendar_screen.dart b/lib/screens/plan/calendar_screen.dart
index 7b239c8..6e05e20 100644
--- a/lib/screens/plan/calendar_screen.dart
+++ b/lib/screens/plan/calendar_screen.dart
@@ -13,6 +13,7 @@ import '../../widgets/dk_section.dart';
 import '../../widgets/dk_segmented.dart';
 import 'calendar_logic.dart';
 import 'week_strip.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 캘린더 뷰. 프로토타입 `CalendarScreen`(embedded).
 ///
@@ -231,13 +232,13 @@ Widget _todayChip(DkTokens t, VoidCallback onTap) {
       padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 7),
       decoration: BoxDecoration(
         color: t.primarySubtle,
-        borderRadius: BorderRadius.circular(10),
+        borderRadius: BorderRadius.circular(SeedRadius.sm),
       ),
       child: Text(
         '오늘',
         style: TextStyle(
           fontFamily: 'Pretendard',
-          fontSize: 13.5,
+          fontSize: SeedType.label,
           fontWeight: FontWeight.w700,
           color: t.primary,
         ),
@@ -284,7 +285,7 @@ class _CalNav extends StatelessWidget {
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: t.bgSubtle,
-          borderRadius: BorderRadius.circular(10),
+          borderRadius: BorderRadius.circular(SeedRadius.sm),
         ),
         child: DkIcon(icon, size: 18, color: t.fgMuted, strokeWidth: 2.2),
       ),
@@ -328,7 +329,7 @@ class _MonthGrid extends StatelessWidget {
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: t.bgSubtle,
-          borderRadius: BorderRadius.circular(10),
+          borderRadius: BorderRadius.circular(SeedRadius.sm),
         ),
         child: DkIcon(icon, size: 18, color: t.fgMuted, strokeWidth: 2.2),
       ),
@@ -355,7 +356,7 @@ class _MonthGrid extends StatelessWidget {
                   '${month.year}년 ${kMonthsKo[month.month - 1]}',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 15,
+                    fontSize: SeedType.base,
                     fontWeight: FontWeight.w700,
                     color: t.fgStrong,
                   ),
@@ -377,7 +378,7 @@ class _MonthGrid extends StatelessWidget {
                     kWeekdaysKo[i],
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w600,
                       color: i == 0
                           ? t.danger
@@ -445,13 +446,13 @@ class _MonthGrid extends StatelessWidget {
                     : isToday
                     ? t.primarySubtle
                     : const Color(0x00000000),
-                borderRadius: BorderRadius.circular(11),
+                borderRadius: BorderRadius.circular(SeedRadius.sm),
               ),
               child: Text(
                 '$day',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 14.5,
+                  fontSize: SeedType.body,
                   fontWeight: on || isToday ? FontWeight.w700 : FontWeight.w500,
                   letterSpacing: -0.3,
                   color: on
@@ -559,7 +560,7 @@ class _DayList extends StatelessWidget {
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
         decoration: BoxDecoration(
           color: t.bg,
-          borderRadius: BorderRadius.circular(14),
+          borderRadius: BorderRadius.circular(SeedRadius.button),
           border: Border.all(color: t.borderSubtle),
           boxShadow: t.shadows.s1,
         ),
@@ -570,7 +571,7 @@ class _DayList extends StatelessWidget {
               height: 34,
               decoration: BoxDecoration(
                 color: color,
-                borderRadius: BorderRadius.circular(99),
+                borderRadius: BorderRadius.circular(SeedRadius.pill),
               ),
             ),
             const SizedBox(width: 12),
@@ -584,7 +585,7 @@ class _DayList extends StatelessWidget {
                     overflow: TextOverflow.ellipsis,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 14.5,
+                      fontSize: SeedType.body,
                       fontWeight: FontWeight.w600,
                       letterSpacing: -0.15,
                       color: done ? t.fgDisabled : t.fg,
@@ -600,7 +601,7 @@ class _DayList extends StatelessWidget {
                         meta,
                         style: TextStyle(
                           fontFamily: 'Pretendard',
-                          fontSize: 12,
+                          fontSize: SeedType.caption,
                           fontWeight: FontWeight.w500,
                           color: t.fgSubtle,
                         ),
diff --git a/lib/screens/plan/task_screen.dart b/lib/screens/plan/task_screen.dart
index 66b3a52..63402c3 100644
--- a/lib/screens/plan/task_screen.dart
+++ b/lib/screens/plan/task_screen.dart
@@ -11,6 +11,7 @@ import '../../widgets/dk_empty.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_section.dart';
 import 'week_strip.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 할 일 뷰. 프로토타입 `TaskScreen`(embedded).
 ///
@@ -156,7 +157,7 @@ class _TaskScreenState extends State<TaskScreen> {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: t.warningSubtle,
-                borderRadius: BorderRadius.circular(14),
+                borderRadius: BorderRadius.circular(SeedRadius.button),
               ),
               child: DkIcon(
                 'carryForward',
@@ -176,7 +177,7 @@ class _TaskScreenState extends State<TaskScreen> {
                         '미룬 시간',
                         style: TextStyle(
                           fontFamily: 'Pretendard',
-                          fontSize: 15,
+                          fontSize: SeedType.base,
                           fontWeight: FontWeight.w700,
                           letterSpacing: -0.3,
                           color: t.fg,
@@ -196,7 +197,7 @@ class _TaskScreenState extends State<TaskScreen> {
                     TextSpan(
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 12.5,
+                        fontSize: SeedType.caption,
                         fontWeight: FontWeight.w500,
                         color: t.fgSubtle,
                       ),
diff --git a/lib/screens/plan/week_strip.dart b/lib/screens/plan/week_strip.dart
index f589de5..c31a257 100644
--- a/lib/screens/plan/week_strip.dart
+++ b/lib/screens/plan/week_strip.dart
@@ -2,6 +2,7 @@ import 'package:flutter/widgets.dart';
 
 import '../../data/format.dart';
 import '../../theme/tokens.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 주간 7일 스트립. 프로토타입 `WeekStrip`(월요일 시작 2026-06-01).
 ///
@@ -58,7 +59,7 @@ class WeekStrip extends StatelessWidget {
               wd,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12,
+                fontSize: SeedType.caption,
                 fontWeight: FontWeight.w600,
                 color: on ? t.primary : t.fgSubtle,
               ),
@@ -70,7 +71,7 @@ class WeekStrip extends StatelessWidget {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: on ? t.primary : const Color(0x00000000),
-                borderRadius: BorderRadius.circular(12),
+                borderRadius: BorderRadius.circular(SeedRadius.sm),
                 border: Border.all(
                   color: !on && isToday ? t.primary : const Color(0x00000000),
                   width: 1.5,
@@ -80,7 +81,7 @@ class WeekStrip extends StatelessWidget {
                 '${d.day}',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 15,
+                  fontSize: SeedType.base,
                   fontWeight: FontWeight.w700,
                   letterSpacing: -0.3,
                   color: on
diff --git a/lib/screens/review/review_screen.dart b/lib/screens/review/review_screen.dart
index 1d73371..6797982 100644
--- a/lib/screens/review/review_screen.dart
+++ b/lib/screens/review/review_screen.dart
@@ -12,6 +12,7 @@ import '../../widgets/dk_feedback.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_ring.dart';
 import '../../widgets/dk_section.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 주간 리뷰(회고) 서브화면. 프로토타입 `ReviewScreen`.
 class ReviewScreen extends StatelessWidget {
@@ -185,7 +186,7 @@ class ReviewScreen extends StatelessWidget {
           label,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 13,
+            fontSize: SeedType.label,
             fontWeight: FontWeight.w600,
             color: t.onInkMuted,
           ),
@@ -195,7 +196,7 @@ class ReviewScreen extends StatelessWidget {
           TextSpan(
             style: TextStyle(
               fontFamily: 'WantedSans',
-              fontSize: 18,
+              fontSize: SeedType.bodyLg,
               fontWeight: FontWeight.w800,
               color: color,
             ),
@@ -203,7 +204,10 @@ class ReviewScreen extends StatelessWidget {
               TextSpan(text: '$value'),
               TextSpan(
                 text: unit,
-                style: TextStyle(fontSize: 12, color: t.onInkMuted),
+                style: TextStyle(
+                  fontSize: SeedType.caption,
+                  color: t.onInkMuted,
+                ),
               ),
             ],
           ),
@@ -242,7 +246,7 @@ class ReviewScreen extends StatelessWidget {
                   '$doneDays/7일 완벽',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12.5,
+                    fontSize: SeedType.caption,
                     fontWeight: FontWeight.w700,
                     color: t.fg,
                   ),
@@ -269,7 +273,7 @@ class ReviewScreen extends StatelessWidget {
           alignment: Alignment.bottomCenter,
           decoration: BoxDecoration(
             color: t.bgPress,
-            borderRadius: BorderRadius.circular(8),
+            borderRadius: BorderRadius.circular(SeedRadius.chip),
           ),
           clipBehavior: Clip.antiAlias,
           child: TweenAnimationBuilder<double>(
@@ -281,7 +285,7 @@ class ReviewScreen extends StatelessWidget {
               height: h * v,
               decoration: BoxDecoration(
                 color: d.allDone ? t.success : t.primary,
-                borderRadius: BorderRadius.circular(8),
+                borderRadius: BorderRadius.circular(SeedRadius.chip),
               ),
             ),
           ),
@@ -291,7 +295,7 @@ class ReviewScreen extends StatelessWidget {
           d.day,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 12,
+            fontSize: SeedType.caption,
             fontWeight: FontWeight.w700,
             color: d.allDone ? t.successFg : t.fgSubtle,
           ),
@@ -317,7 +321,7 @@ class ReviewScreen extends StatelessWidget {
           label,
           style: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 12,
+            fontSize: SeedType.caption,
             fontWeight: FontWeight.w500,
             color: t.fgSubtle,
           ),
@@ -348,7 +352,7 @@ class ReviewScreen extends StatelessWidget {
                   TextSpan(
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 15,
+                      fontSize: SeedType.base,
                       fontWeight: FontWeight.w700,
                       letterSpacing: -0.3,
                       color: t.fg,
@@ -368,7 +372,7 @@ class ReviewScreen extends StatelessWidget {
                   '이번 주도 이어가면 최고 기록이에요',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 12.5,
+                    fontSize: SeedType.caption,
                     fontWeight: FontWeight.w500,
                     color: t.fgSubtle,
                   ),
@@ -404,7 +408,7 @@ class ReviewScreen extends StatelessWidget {
         crossAxisAlignment: CrossAxisAlignment.start,
         children: <Widget>[
           ClipRRect(
-            borderRadius: BorderRadius.circular(99),
+            borderRadius: BorderRadius.circular(SeedRadius.pill),
             child: SizedBox(
               height: 12,
               child: Row(
@@ -438,7 +442,7 @@ class ReviewScreen extends StatelessWidget {
                       c.cat,
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 14,
+                        fontSize: SeedType.body,
                         fontWeight: FontWeight.w600,
                         color: t.fg,
                       ),
@@ -448,7 +452,7 @@ class ReviewScreen extends StatelessWidget {
                     fmtMins(c.mins),
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 13,
+                      fontSize: SeedType.label,
                       fontWeight: FontWeight.w500,
                       color: t.fgSubtle,
                     ),
@@ -461,7 +465,7 @@ class ReviewScreen extends StatelessWidget {
                       textAlign: TextAlign.right,
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 13,
+                        fontSize: SeedType.label,
                         fontWeight: FontWeight.w700,
                         color: t.fg,
                       ),
@@ -495,7 +499,7 @@ class ReviewScreen extends StatelessWidget {
               review.insight,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 13.5,
+                fontSize: SeedType.label,
                 height: 1.55,
                 fontWeight: FontWeight.w600,
                 color: t.primary,
diff --git a/lib/screens/sheets/date_picker_sheet.dart b/lib/screens/sheets/date_picker_sheet.dart
index a1b7dce..0ea5d6b 100644
--- a/lib/screens/sheets/date_picker_sheet.dart
+++ b/lib/screens/sheets/date_picker_sheet.dart
@@ -6,6 +6,7 @@ import '../../widgets/dk_button.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_sheet.dart';
 import '../plan/calendar_logic.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 날짜 선택 시트를 열고 선택한 `YYYY-MM-DD` 를 반환한다(취소 시 null).
 /// [initial] 이 가리키는 달을 첫 화면으로 보여준다.
@@ -66,7 +67,7 @@ class _DatePickerBodyState extends State<_DatePickerBody> {
                   '${_month.year}년 ${kMonthsKo[_month.month - 1]}',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 16,
+                    fontSize: SeedType.bodyLg,
                     fontWeight: FontWeight.w700,
                     color: t.fgStrong,
                   ),
@@ -87,7 +88,7 @@ class _DatePickerBodyState extends State<_DatePickerBody> {
                     kWeekdaysKo[i],
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w600,
                       color: i == 0
                           ? t.danger
@@ -137,7 +138,7 @@ class _DatePickerBodyState extends State<_DatePickerBody> {
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: t.bgSubtle,
-          borderRadius: BorderRadius.circular(12),
+          borderRadius: BorderRadius.circular(SeedRadius.sm),
         ),
         child: DkIcon(icon, size: 20, color: t.fgMuted, strokeWidth: 2.2),
       ),
@@ -173,7 +174,7 @@ class _DatePickerBodyState extends State<_DatePickerBody> {
             alignment: Alignment.center,
             decoration: BoxDecoration(
               color: isSelected ? t.primary : null,
-              borderRadius: BorderRadius.circular(12),
+              borderRadius: BorderRadius.circular(SeedRadius.sm),
               border: isToday && !isSelected
                   ? Border.all(color: t.primary, width: 1.5)
                   : null,
@@ -182,7 +183,7 @@ class _DatePickerBodyState extends State<_DatePickerBody> {
               '$day',
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 14.5,
+                fontSize: SeedType.body,
                 fontWeight: isSelected || isToday
                     ? FontWeight.w700
                     : FontWeight.w500,
diff --git a/lib/screens/sheets/date_range_picker_sheet.dart b/lib/screens/sheets/date_range_picker_sheet.dart
index 8f190c5..606a096 100644
--- a/lib/screens/sheets/date_range_picker_sheet.dart
+++ b/lib/screens/sheets/date_range_picker_sheet.dart
@@ -6,6 +6,7 @@ import '../../widgets/dk_button.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_sheet.dart';
 import '../plan/calendar_logic.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 기간(시작~종료)을 한 달력에서 연속 선택하는 시트. 시작 탭 → 종료 탭, 사이를 하이라이트한다.
 /// 종료는 시작보다 앞설 수 없다(앞 날짜를 탭하면 시작이 재설정됨). 선택 완료 시 `(start, end)`,
@@ -97,7 +98,7 @@ class _DateRangePickerBodyState extends State<_DateRangePickerBody> {
                   '${_month.year}년 ${kMonthsKo[_month.month - 1]}',
                   style: TextStyle(
                     fontFamily: 'Pretendard',
-                    fontSize: 16,
+                    fontSize: SeedType.bodyLg,
                     fontWeight: FontWeight.w700,
                     color: t.fgStrong,
                   ),
@@ -113,7 +114,7 @@ class _DateRangePickerBodyState extends State<_DateRangePickerBody> {
             _summary(),
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 13.5,
+              fontSize: SeedType.label,
               fontWeight: FontWeight.w600,
               color: _complete ? t.primary : t.fgSubtle,
             ),
@@ -129,7 +130,7 @@ class _DateRangePickerBodyState extends State<_DateRangePickerBody> {
                     kWeekdaysKo[i],
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w600,
                       color: i == 0
                           ? t.danger
@@ -183,7 +184,7 @@ class _DateRangePickerBodyState extends State<_DateRangePickerBody> {
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: t.bgSubtle,
-          borderRadius: BorderRadius.circular(12),
+          borderRadius: BorderRadius.circular(SeedRadius.sm),
         ),
         child: DkIcon(icon, size: 20, color: t.fgMuted, strokeWidth: 2.2),
       ),
@@ -249,7 +250,7 @@ class _DateRangePickerBodyState extends State<_DateRangePickerBody> {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: isEndpoint ? t.primary : null,
-                borderRadius: BorderRadius.circular(12),
+                borderRadius: BorderRadius.circular(SeedRadius.sm),
                 border: isToday && !isEndpoint && !inRange
                     ? Border.all(color: t.primary, width: 1.5)
                     : null,
@@ -258,7 +259,7 @@ class _DateRangePickerBodyState extends State<_DateRangePickerBody> {
                 '$day',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 14.5,
+                  fontSize: SeedType.body,
                   fontWeight: isEndpoint || isToday
                       ? FontWeight.w700
                       : FontWeight.w500,
diff --git a/lib/screens/sheets/event_sheet.dart b/lib/screens/sheets/event_sheet.dart
index 1f0d563..7aa27af 100644
--- a/lib/screens/sheets/event_sheet.dart
+++ b/lib/screens/sheets/event_sheet.dart
@@ -14,6 +14,7 @@ import '../me/settings_section.dart';
 import 'date_picker_sheet.dart';
 import 'date_range_picker_sheet.dart';
 import 'sheet_fields.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 이벤트 추가/상세 시트 본문. 프로토타입 `EventSheet`.
 class EventSheetBody extends StatefulWidget {
@@ -117,7 +118,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 13),
         decoration: BoxDecoration(
           color: t.bg,
-          borderRadius: BorderRadius.circular(12),
+          borderRadius: BorderRadius.circular(SeedRadius.sm),
           border: Border.all(color: t.border, width: 1.5),
         ),
         child: Row(
@@ -127,7 +128,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
                 fmtDate(controller.text),
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 15,
+                  fontSize: SeedType.base,
                   fontWeight: FontWeight.w500,
                   color: t.fg,
                 ),
@@ -165,7 +166,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 13),
         decoration: BoxDecoration(
           color: t.bg,
-          borderRadius: BorderRadius.circular(12),
+          borderRadius: BorderRadius.circular(SeedRadius.sm),
           border: Border.all(color: t.border, width: 1.5),
         ),
         child: Row(
@@ -175,7 +176,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
                 '${fmtDate(_start.text)}  ~  ${fmtDate(_end.text)}',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 15,
+                  fontSize: SeedType.base,
                   fontWeight: FontWeight.w500,
                   color: t.fg,
                 ),
@@ -242,7 +243,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
           padding: const EdgeInsets.symmetric(horizontal: 14),
           decoration: BoxDecoration(
             color: t.bgSubtle,
-            borderRadius: BorderRadius.circular(14),
+            borderRadius: BorderRadius.circular(SeedRadius.button),
           ),
           child: _pinRow(t),
         ),
@@ -268,7 +269,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
                 '홈 상단에 고정',
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 14.5,
+                  fontSize: SeedType.body,
                   fontWeight: FontWeight.w500,
                   color: t.fg,
                 ),
@@ -340,7 +341,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
                               '${ev.category} · ${eventDateLabel(ev)}',
                               style: const TextStyle(
                                 fontFamily: 'Pretendard',
-                                fontSize: 13,
+                                fontSize: SeedType.label,
                                 color: Color(0xB3FFFFFF),
                               ),
                             ),
@@ -349,7 +350,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
                               ev.title,
                               style: const TextStyle(
                                 fontFamily: 'Pretendard',
-                                fontSize: 19,
+                                fontSize: SeedType.title,
                                 fontWeight: FontWeight.w700,
                                 color: white,
                               ),
@@ -372,7 +373,7 @@ class _EventSheetBodyState extends State<EventSheetBody> {
                   if (showBar) ...<Widget>[
                     const SizedBox(height: 14),
                     ClipRRect(
-                      borderRadius: BorderRadius.circular(99),
+                      borderRadius: BorderRadius.circular(SeedRadius.pill),
                       child: SizedBox(
                         height: 7,
                         child: Stack(
diff --git a/lib/screens/sheets/notif_sheet.dart b/lib/screens/sheets/notif_sheet.dart
index 737f231..7c25227 100644
--- a/lib/screens/sheets/notif_sheet.dart
+++ b/lib/screens/sheets/notif_sheet.dart
@@ -7,6 +7,7 @@ import '../../widgets/dk_badge.dart';
 import '../../widgets/dk_empty.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_sheet.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 알림 종류별 아이콘·톤 매핑(표현은 client 권한). server 는 [DkNotifType] 만 내려준다.
 ({String icon, DkTone tone}) _appearance(DkNotifType type) => switch (type) {
@@ -71,7 +72,7 @@ class NotifSheetBody extends StatelessWidget {
                       '모두 읽음',
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 13,
+                        fontSize: SeedType.label,
                         fontWeight: FontWeight.w600,
                         color: t.primary,
                       ),
@@ -111,7 +112,7 @@ class NotifSheetBody extends StatelessWidget {
           alignment: Alignment.center,
           decoration: BoxDecoration(
             color: colors.bg,
-            borderRadius: BorderRadius.circular(12),
+            borderRadius: BorderRadius.circular(SeedRadius.sm),
           ),
           child: DkIcon(ap.icon, size: 19, color: colors.fg, strokeWidth: 2),
         ),
@@ -124,7 +125,7 @@ class NotifSheetBody extends StatelessWidget {
                 it.body,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 14,
+                  fontSize: SeedType.body,
                   height: 1.4,
                   fontWeight: it.read ? FontWeight.w500 : FontWeight.w600,
                   color: it.read ? t.fgSubtle : t.fg,
@@ -135,7 +136,7 @@ class NotifSheetBody extends StatelessWidget {
                 _relativeTime(it.createdAt),
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 12,
+                  fontSize: SeedType.caption,
                   color: t.fgSubtle,
                 ),
               ),
diff --git a/lib/screens/sheets/sheet_fields.dart b/lib/screens/sheets/sheet_fields.dart
index fba35ec..292171a 100644
--- a/lib/screens/sheets/sheet_fields.dart
+++ b/lib/screens/sheets/sheet_fields.dart
@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 
 import '../../theme/tokens.dart';
 import '../../widgets/dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 폼 필드(라벨 + 콘텐츠 + 힌트). 프로토타입 `Field`.
 class DkField extends StatelessWidget {
@@ -28,7 +29,7 @@ class DkField extends StatelessWidget {
             label,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 13,
+              fontSize: SeedType.label,
               fontWeight: FontWeight.w600,
               color: t.fgMuted,
             ),
@@ -41,7 +42,7 @@ class DkField extends StatelessWidget {
               hint!,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 12,
+                fontSize: SeedType.caption,
                 color: t.fgSubtle,
               ),
             ),
@@ -95,7 +96,7 @@ class _DkTextInputState extends State<DkTextInput> {
       constraints: BoxConstraints(minHeight: widget.minHeight ?? 0),
       decoration: BoxDecoration(
         color: t.bg,
-        borderRadius: BorderRadius.circular(12),
+        borderRadius: BorderRadius.circular(SeedRadius.sm),
         border: Border.all(color: focused ? t.primary : t.border, width: 1.5),
         boxShadow: focused
             ? <BoxShadow>[
@@ -118,7 +119,7 @@ class _DkTextInputState extends State<DkTextInput> {
         cursorColor: t.primary,
         style: TextStyle(
           fontFamily: 'Pretendard',
-          fontSize: 15,
+          fontSize: SeedType.base,
           fontWeight: FontWeight.w500,
           color: t.fg,
         ),
@@ -126,7 +127,7 @@ class _DkTextInputState extends State<DkTextInput> {
           hintText: widget.placeholder ?? '',
           hintStyle: TextStyle(
             fontFamily: 'Pretendard',
-            fontSize: 15,
+            fontSize: SeedType.base,
             fontWeight: FontWeight.w500,
             color: t.fgSubtle,
           ),
@@ -169,7 +170,7 @@ class DkCategoryPills extends StatelessWidget {
         padding: const EdgeInsets.symmetric(horizontal: 13, vertical: 7),
         decoration: BoxDecoration(
           color: on ? h.subtle : t.bg,
-          borderRadius: BorderRadius.circular(99),
+          borderRadius: BorderRadius.circular(SeedRadius.pill),
           border: Border.all(color: on ? h.color : t.border, width: 1.5),
         ),
         child: Row(
@@ -186,7 +187,7 @@ class DkCategoryPills extends StatelessWidget {
               cat,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 13,
+                fontSize: SeedType.label,
                 fontWeight: FontWeight.w600,
                 color: on ? h.color : t.fgMuted,
               ),
diff --git a/lib/screens/sheets/task_sheet.dart b/lib/screens/sheets/task_sheet.dart
index daecb77..1c6cbbb 100644
--- a/lib/screens/sheets/task_sheet.dart
+++ b/lib/screens/sheets/task_sheet.dart
@@ -11,6 +11,7 @@ import '../../widgets/dk_sheet.dart';
 import 'date_picker_sheet.dart';
 import 'date_range_picker_sheet.dart';
 import 'sheet_fields.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 const List<int> _minOptions = <int>[15, 30, 45, 60, 90, 120];
 
@@ -212,7 +213,7 @@ class _TaskSheetBodyState extends State<TaskSheetBody> {
             padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 13),
             decoration: BoxDecoration(
               color: t.bg,
-              borderRadius: BorderRadius.circular(12),
+              borderRadius: BorderRadius.circular(SeedRadius.sm),
               border: Border.all(color: t.border, width: 1.5),
             ),
             child: Row(
@@ -222,7 +223,7 @@ class _TaskSheetBodyState extends State<TaskSheetBody> {
                     _dateLabel,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 15,
+                      fontSize: SeedType.base,
                       fontWeight: FontWeight.w500,
                       color: t.fg,
                     ),
@@ -257,7 +258,7 @@ class _TaskSheetBodyState extends State<TaskSheetBody> {
             padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 11),
             decoration: BoxDecoration(
               color: t.infoSubtle,
-              borderRadius: BorderRadius.circular(12),
+              borderRadius: BorderRadius.circular(SeedRadius.sm),
             ),
             child: Row(
               children: <Widget>[
@@ -268,7 +269,7 @@ class _TaskSheetBodyState extends State<TaskSheetBody> {
                     '${task.fromLabel}에서 옮겨온 할 일이에요',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 13.5,
+                      fontSize: SeedType.label,
                       fontWeight: FontWeight.w600,
                       color: t.infoFg,
                     ),
@@ -390,7 +391,7 @@ class _TaskSheetBodyState extends State<TaskSheetBody> {
           child: DkChoiceChip(
             label: kWeekdaysKo[i],
             selected: _weeklyDays.contains(num),
-            fontSize: 13,
+            fontSize: SeedType.label,
             expand: true,
             onTap: () => setState(() {
               // 불변 패턴: 기존 Set 을 변형하지 않고 새 Set 으로 교체한다.
diff --git a/lib/screens/splash.dart b/lib/screens/splash.dart
index 1f99b93..384e79e 100644
--- a/lib/screens/splash.dart
+++ b/lib/screens/splash.dart
@@ -4,6 +4,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import '../widgets/dk_logo.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 스플래시. 프로토타입 `Splash`.
 ///
@@ -63,7 +64,7 @@ class _SplashScreenState extends State<SplashScreen> {
               'D-Day · 할 일 · 집중을 하나로',
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 14.5,
+                fontSize: SeedType.body,
                 fontWeight: FontWeight.w600,
                 color: t.fgSubtle,
               ),
diff --git a/lib/screens/today/today_screen.dart b/lib/screens/today/today_screen.dart
index 27bd707..ed9d1f9 100644
--- a/lib/screens/today/today_screen.dart
+++ b/lib/screens/today/today_screen.dart
@@ -12,6 +12,7 @@ import '../../widgets/dk_empty.dart';
 import '../../widgets/dk_icon.dart';
 import '../../widgets/dk_section.dart';
 import 'today_logic.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 오늘 탭. D-Day 중심.
 ///
@@ -239,7 +240,7 @@ class _DdayRow extends StatelessWidget {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: h.subtle,
-                borderRadius: BorderRadius.circular(12),
+                borderRadius: BorderRadius.circular(SeedRadius.sm),
               ),
               // 카테고리에 맞는 아이콘(자격증→graduationCap 등). 미매핑은 target 폴백.
               child: DkIcon(
@@ -268,7 +269,7 @@ class _DdayRow extends StatelessWidget {
                           overflow: TextOverflow.ellipsis,
                           style: TextStyle(
                             fontFamily: 'Pretendard',
-                            fontSize: 15,
+                            fontSize: SeedType.base,
                             fontWeight: FontWeight.w700,
                             letterSpacing: -0.3,
                             color: t.fg,
@@ -282,7 +283,7 @@ class _DdayRow extends StatelessWidget {
                     event.category,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12.5,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w600,
                       color: h.color,
                     ),
@@ -295,7 +296,7 @@ class _DdayRow extends StatelessWidget {
                     overflow: TextOverflow.ellipsis,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w500,
                       letterSpacing: -0.12,
                       color: t.fgSubtle,
@@ -308,7 +309,9 @@ class _DdayRow extends StatelessWidget {
                       children: <Widget>[
                         Expanded(
                           child: ClipRRect(
-                            borderRadius: BorderRadius.circular(99),
+                            borderRadius: BorderRadius.circular(
+                              SeedRadius.pill,
+                            ),
                             child: SizedBox(
                               height: 6,
                               child: Stack(
@@ -329,7 +332,7 @@ class _DdayRow extends StatelessWidget {
                           '${info.pct}%',
                           style: TextStyle(
                             fontFamily: 'Pretendard',
-                            fontSize: 11.5,
+                            fontSize: SeedType.caption,
                             fontWeight: FontWeight.w700,
                             color: t.fgSubtle,
                           ),
@@ -351,7 +354,7 @@ class _DdayRow extends StatelessWidget {
                     info.toStart == 0 ? '시작 D-DAY' : '시작 D+${-info.toStart}',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 12.5,
+                      fontSize: SeedType.caption,
                       fontWeight: FontWeight.w600,
                       letterSpacing: -0.2,
                       color: t.fgSubtle,
@@ -362,7 +365,7 @@ class _DdayRow extends StatelessWidget {
                     info.toEnd == 0 ? '마감 D-DAY' : '마감 D-${info.toEnd}',
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 17,
+                      fontSize: SeedType.bodyLg,
                       fontWeight: FontWeight.w800,
                       letterSpacing: -0.3,
                       color: uColor(info.urgency),
@@ -376,7 +379,7 @@ class _DdayRow extends StatelessWidget {
                 info.label,
                 style: TextStyle(
                   fontFamily: 'Pretendard',
-                  fontSize: 17,
+                  fontSize: SeedType.bodyLg,
                   fontWeight: FontWeight.w800,
                   letterSpacing: -0.3,
                   color: uColor(info.urgency),
@@ -387,7 +390,7 @@ class _DdayRow extends StatelessWidget {
                 big,
                 style: TextStyle(
                   fontFamily: 'WantedSans',
-                  fontSize: 24,
+                  fontSize: SeedType.heading,
                   fontWeight: FontWeight.w800,
                   letterSpacing: -0.72,
                   color: uColor(info.urgency),
@@ -428,7 +431,7 @@ class _DebtNudge extends StatelessWidget {
               alignment: Alignment.center,
               decoration: BoxDecoration(
                 color: t.warningSubtle,
-                borderRadius: BorderRadius.circular(14),
+                borderRadius: BorderRadius.circular(SeedRadius.button),
               ),
               child: DkIcon(
                 'carryForward',
@@ -448,7 +451,7 @@ class _DebtNudge extends StatelessWidget {
                         '미룬 시간',
                         style: TextStyle(
                           fontFamily: 'Pretendard',
-                          fontSize: 15,
+                          fontSize: SeedType.base,
                           fontWeight: FontWeight.w700,
                           letterSpacing: -0.3,
                           color: t.fg,
@@ -465,7 +468,7 @@ class _DebtNudge extends StatelessWidget {
                     TextSpan(
                       style: TextStyle(
                         fontFamily: 'Pretendard',
-                        fontSize: 12.5,
+                        fontSize: SeedType.caption,
                         fontWeight: FontWeight.w500,
                         color: t.fgSubtle,
                       ),
diff --git a/lib/widgets/dk_alert.dart b/lib/widgets/dk_alert.dart
index 6ea78fc..d8c9bd5 100644
--- a/lib/widgets/dk_alert.dart
+++ b/lib/widgets/dk_alert.dart
@@ -3,6 +3,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import 'dk_button.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 중앙 확인 Alert(취소/확인). 되돌리기 어려운 동작(연동 해제 등)에 명시적 확인을 받는다.
 ///
@@ -41,7 +42,7 @@ Future<bool> showDkConfirmAlert(
                     title,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 17,
+                      fontSize: SeedType.bodyLg,
                       fontWeight: FontWeight.w800,
                       color: t.fgStrong,
                     ),
@@ -51,7 +52,7 @@ Future<bool> showDkConfirmAlert(
                     body,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 14,
+                      fontSize: SeedType.body,
                       height: 1.45,
                       color: t.fgSubtle,
                     ),
diff --git a/lib/widgets/dk_bell_button.dart b/lib/widgets/dk_bell_button.dart
index 9f1b557..9dbc988 100644
--- a/lib/widgets/dk_bell_button.dart
+++ b/lib/widgets/dk_bell_button.dart
@@ -2,6 +2,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import 'dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 우상단 알림 벨 버튼(모든 탭 공통). 프로토타입 `AppHeader` 의 벨을 단일 위젯으로 통일.
 ///
@@ -25,7 +26,7 @@ class DkBellButton extends StatelessWidget {
         alignment: Alignment.center,
         decoration: BoxDecoration(
           color: t.bgPress,
-          borderRadius: BorderRadius.circular(14),
+          borderRadius: BorderRadius.circular(SeedRadius.button),
         ),
         child: Stack(
           clipBehavior: Clip.none,
diff --git a/lib/widgets/dk_empty.dart b/lib/widgets/dk_empty.dart
index d20b4ab..94d29cf 100644
--- a/lib/widgets/dk_empty.dart
+++ b/lib/widgets/dk_empty.dart
@@ -3,6 +3,7 @@ import 'package:flutter/widgets.dart';
 import '../theme/tokens.dart';
 import 'dk_button.dart';
 import 'dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 빈 상태. 프로토타입 `Empty`.
 ///
@@ -49,7 +50,7 @@ class DkEmpty extends StatelessWidget {
             textAlign: TextAlign.center,
             style: TextStyle(
               fontFamily: 'Pretendard',
-              fontSize: 17,
+              fontSize: SeedType.bodyLg,
               fontWeight: FontWeight.w700,
               letterSpacing: -0.34,
               color: t.fg,
@@ -63,7 +64,7 @@ class DkEmpty extends StatelessWidget {
               textAlign: TextAlign.center,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 14,
+                fontSize: SeedType.body,
                 height: 1.5,
                 color: t.fgSubtle,
               ),
diff --git a/lib/widgets/dk_feedback.dart b/lib/widgets/dk_feedback.dart
index a74f245..f2da92c 100644
--- a/lib/widgets/dk_feedback.dart
+++ b/lib/widgets/dk_feedback.dart
@@ -3,6 +3,7 @@ import 'package:flutter/widgets.dart';
 import '../theme/tokens.dart';
 import 'dk_badge.dart';
 import 'dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 토스트 한 건. 프로토타입 `showToast` payload.
 class DkToastData {
@@ -117,7 +118,7 @@ class _Toast extends StatelessWidget {
           // ink 표면(양 테마 모두 어두움) — fgStrong 은 다크에서 흰색으로 뒤집혀
           // 흰 알약+흰 글자가 되므로 쓰지 않는다.
           color: tokens.ink,
-          borderRadius: BorderRadius.circular(14),
+          borderRadius: BorderRadius.circular(SeedRadius.button),
           boxShadow: tokens.shadows.s3,
         ),
         child: Row(
@@ -136,7 +137,7 @@ class _Toast extends StatelessWidget {
               data.message,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 14,
+                fontSize: SeedType.body,
                 fontWeight: FontWeight.w600,
                 letterSpacing: -0.14,
                 color: tokens.onInk,
diff --git a/lib/widgets/dk_section.dart b/lib/widgets/dk_section.dart
index 4c574d8..6eb4270 100644
--- a/lib/widgets/dk_section.dart
+++ b/lib/widgets/dk_section.dart
@@ -2,6 +2,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import 'dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 섹션 헤더. 프로토타입 `SectionHead`: 제목 17/700 + 우측 action(13/600 + chevR).
 class DkSectionHead extends StatelessWidget {
@@ -28,7 +29,7 @@ class DkSectionHead extends StatelessWidget {
               title,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 17,
+                fontSize: SeedType.bodyLg,
                 fontWeight: FontWeight.w700,
                 letterSpacing: -0.34,
                 color: t.fg,
@@ -46,7 +47,7 @@ class DkSectionHead extends StatelessWidget {
                     action!,
                     style: TextStyle(
                       fontFamily: 'Pretendard',
-                      fontSize: 13,
+                      fontSize: SeedType.label,
                       fontWeight: FontWeight.w600,
                       color: t.fgSubtle,
                     ),
@@ -80,7 +81,7 @@ class DkSectionLabel extends StatelessWidget {
       label,
       style: TextStyle(
         fontFamily: 'Pretendard',
-        fontSize: 12,
+        fontSize: SeedType.caption,
         fontWeight: FontWeight.w700,
         letterSpacing: 0.96,
         color: t.fgSubtle,
diff --git a/lib/widgets/dk_sheet.dart b/lib/widgets/dk_sheet.dart
index f17c51b..d7f72cc 100644
--- a/lib/widgets/dk_sheet.dart
+++ b/lib/widgets/dk_sheet.dart
@@ -3,6 +3,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import 'dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 바텀시트. 프로토타입 `Sheet`.
 ///
@@ -53,7 +54,7 @@ class DkSheet extends StatelessWidget {
                 height: 5,
                 decoration: BoxDecoration(
                   color: t.borderStrong,
-                  borderRadius: BorderRadius.circular(99),
+                  borderRadius: BorderRadius.circular(SeedRadius.pill),
                 ),
               ),
               if (title != null)
@@ -66,7 +67,7 @@ class DkSheet extends StatelessWidget {
                           title!,
                           style: TextStyle(
                             fontFamily: 'Pretendard',
-                            fontSize: 19,
+                            fontSize: SeedType.title,
                             fontWeight: FontWeight.w700,
                             letterSpacing: -0.38,
                             color: t.fgStrong,
@@ -81,7 +82,9 @@ class DkSheet extends StatelessWidget {
                           alignment: Alignment.center,
                           decoration: BoxDecoration(
                             color: t.bgPress,
-                            borderRadius: BorderRadius.circular(99),
+                            borderRadius: BorderRadius.circular(
+                              SeedRadius.pill,
+                            ),
                           ),
                           child: DkIcon('x', size: 20, color: t.fgMuted),
                         ),
diff --git a/lib/widgets/dk_tab_bar.dart b/lib/widgets/dk_tab_bar.dart
index b62b8ec..59a1ec9 100644
--- a/lib/widgets/dk_tab_bar.dart
+++ b/lib/widgets/dk_tab_bar.dart
@@ -4,6 +4,7 @@ import 'package:flutter/widgets.dart';
 
 import '../theme/tokens.dart';
 import 'dk_icon.dart';
+import 'package:ieoseo/theme/seed_tokens.dart';
 
 /// 하단 탭. 프로토타입 `TABS`. (집중 탭은 프로필 도구로 이동, 통계 탭 신설 — ADR 없이 IA 조정)
 enum DkTab { today, plan, stats, me }
@@ -101,7 +102,7 @@ class DkTabBar extends StatelessWidget {
               spec.label,
               style: TextStyle(
                 fontFamily: 'Pretendard',
-                fontSize: 11,
+                fontSize: SeedType.caption,
                 fontWeight: on ? FontWeight.w700 : FontWeight.w500,
                 letterSpacing: -0.11,
                 color: color,