diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ac19cf..440bec2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,16 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [2.11.2] — 2026-06-04
+
+### Fixed
+- **통계 차트가 빌드(main.exe)에서 안 뜨던 진짜 원인** — frozen 빌드에서 numpy C-확장
+  `numpy.core._multiarray_tests`가 누락(`numpy.testing` 제외의 영향)되어 matplotlib import가
+  `ModuleNotFoundError`로 실패 → "matplotlib 필요" 폴백. `main.spec`에 해당 모듈 hiddenimport
+  추가 + `numpy.testing` 제외 제거. (디버그 로그로 원인 확인: chart_widget이 실패 사유를 기록)
+- **도전과제 라이트 테마 가독성** — 헤더 강조 숫자/등급 배지/진행 숫자/진행 바를 라이트에서
+  대비 높은 색으로 조정 (다크는 기존 비비드 색 유지).
+
 ## [2.11.1] — 2026-06-04
 
 ### Fixed
diff --git a/core/version.py b/core/version.py
index 7db5bba..4f4ddc5 100644
--- a/core/version.py
+++ b/core/version.py
@@ -4,4 +4,4 @@
 릴리스 시 이 값을 올린 후 git tag → push.
 CHANGELOG.md의 최상단 항목과 일치시킬 것.
 """
-__version__ = '2.11.1'
+__version__ = '2.11.2'
diff --git a/main.spec b/main.spec
index 69fd201..45ac162 100644
--- a/main.spec
+++ b/main.spec
@@ -36,11 +36,13 @@ a = Analysis(
         'matplotlib.backends.backend_qt5agg',
         'PyQt5.QtSvg',
         'PyQt5.sip',                           # matplotlib qt_compat가 sip 사용
+        'numpy.core._multiarray_tests',        # numpy import 체인이 참조 (frozen 차트 깨짐 방지)
     ],
     hookspath=[],
     hooksconfig={},
     runtime_hooks=[],
-    excludes=['pandas', 'numpy.testing', 'PyQt5.QtWebEngineWidgets'],
+    # numpy.testing 제외 금지 — numpy.core._multiarray_tests 참조가 끊겨 matplotlib import 실패함
+    excludes=['pandas', 'PyQt5.QtWebEngineWidgets'],
     noarchive=False,
     optimize=0,
 )
diff --git a/ui/achievements_view.py b/ui/achievements_view.py
index 3d4e832..cafb0af 100644
--- a/ui/achievements_view.py
+++ b/ui/achievements_view.py
@@ -165,7 +165,13 @@ class AchievementsView(QDialog):
         num_row = QHBoxLayout()
         num_row.setSpacing(24)
 
-        big = QLabel(f"<span style='font-size: 32pt; font-weight: bold; color: #ffd24a;'>{stats['earned']}</span>"
+        # 헤더 강조 숫자색 — 다크는 비비드, 라이트는 동일 색조 진하게(가독성)
+        if _is_dark():
+            c_earned, c_secret, c_pct = '#ffd24a', '#ff90b8', '#4adef0'
+        else:
+            c_earned, c_secret, c_pct = '#C8950A', '#C2185B', '#0E7490'
+
+        big = QLabel(f"<span style='font-size: 32pt; font-weight: bold; color: {c_earned};'>{stats['earned']}</span>"
                       f"<span style='font-size: 18pt; color: {tc('text_dim')};'> / {stats['total']}</span>")
         big.setTextFormat(Qt.RichText)
         num_row.addWidget(big)
@@ -178,7 +184,7 @@ class AchievementsView(QDialog):
         secret_lbl = QLabel(
             f"<div style='line-height: 1.3;'>"
             f"<span style='font-size: 9pt; color: {tc('text_dim')};'>🌑 시크릿</span><br>"
-            f"<span style='font-size: 18pt; font-weight: bold; color: #ff90b8;'>"
+            f"<span style='font-size: 18pt; font-weight: bold; color: {c_secret};'>"
             f"{stats['secret_earned']}</span>"
             f"<span style='font-size: 12pt; color: {tc('text_dim')};'> / {stats['secret_total']}</span>"
             f"</div>"
@@ -191,7 +197,7 @@ class AchievementsView(QDialog):
         pct_lbl = QLabel(
             f"<div style='text-align: right; line-height: 1.3;'>"
             f"<span style='font-size: 9pt; color: {tc('text_dim')};'>달성률</span><br>"
-            f"<span style='font-size: 24pt; font-weight: bold; color: #4adef0;'>"
+            f"<span style='font-size: 24pt; font-weight: bold; color: {c_pct};'>"
             f"{pct:.1f}%</span></div>"
         )
         pct_lbl.setTextFormat(Qt.RichText)
@@ -207,17 +213,17 @@ class AchievementsView(QDialog):
         bar.setTextVisible(False)
         bar.setMinimumHeight(8)
         bar.setMaximumHeight(8)
-        bar.setStyleSheet("""
-            QProgressBar {
-                background: #1a1a26;
+        bar.setStyleSheet(f"""
+            QProgressBar {{
+                background: {tc('panel2')};
                 border: none;
                 border-radius: 4px;
-            }
-            QProgressBar::chunk {
+            }}
+            QProgressBar::chunk {{
                 background: qlineargradient(x1:0, y1:0, x2:1, y2:0,
                     stop:0 #4adef0, stop:0.5 #6b9eff, stop:1 #ff90b8);
                 border-radius: 4px;
-            }
+            }}
         """)
         layout.addWidget(bar)
 
@@ -343,8 +349,8 @@ class AchievementsView(QDialog):
             cat_label = QLabel(f"  {theme['label']} {theme['name']} · {cat_text}  ")
             cat_label.setStyleSheet(
                 f"font-size: 8.5pt; "
-                f"color: {theme['border_strong']}; "
-                f"background: rgba(255,255,255,0.05); "
+                f"color: {theme['border_strong'] if _is_dark() else tc('text_dim')}; "
+                f"background: {'rgba(255,255,255,0.05)' if _is_dark() else tc('panel2')}; "
                 f"border: 1px solid {theme['border']}; "
                 f"border-radius: 8px; "
                 f"padding: 1px 4px;"
@@ -377,9 +383,9 @@ class AchievementsView(QDialog):
         if is_earned:
             earned = QLabel(f"  ✓ {item['earned_date']} 달성  ")
             earned.setStyleSheet(
-                f"color: {theme['border_strong']}; "
+                f"color: {theme['border_strong'] if _is_dark() else tc('text')}; "
                 f"font-weight: bold; font-size: 9.5pt; "
-                f"background: rgba(255,255,255,0.08); "
+                f"background: {'rgba(255,255,255,0.08)' if _is_dark() else tc('panel2')}; "
                 f"border: 1px solid {theme['border']}; "
                 f"border-radius: 6px; padding: 4px 8px;"
             )
@@ -405,7 +411,7 @@ class AchievementsView(QDialog):
             pb.setMaximumHeight(10)
             pb.setStyleSheet(f"""
                 QProgressBar {{
-                    background: rgba(0,0,0,0.4);
+                    background: {'rgba(0,0,0,0.4)' if _is_dark() else tc('panel2')};
                     border: none;
                     border-radius: 5px;
                 }}
@@ -419,7 +425,7 @@ class AchievementsView(QDialog):
 
             num = QLabel(f"{progress} / {target}")
             num.setStyleSheet(
-                f"color: {theme['border_strong']}; font-size: 9pt; "
+                f"color: {theme['border_strong'] if _is_dark() else tc('text_dim')}; font-size: 9pt; "
                 f"font-weight: bold; background: transparent; border: none;"
             )
             num.setMinimumWidth(60)