diff --git a/admin/src/pages/Nodes.jsx b/admin/src/pages/Nodes.jsx
index d1550b5..4bf079f 100644
--- a/admin/src/pages/Nodes.jsx
+++ b/admin/src/pages/Nodes.jsx
@@ -1271,7 +1271,7 @@ export default function Nodes() {
                               : "bg-slate-905 text-slate-400 hover:text-slate-200"
                           }`}
                         >
-                          🔥 Làm nóng (Warmups)
+                          Làm nóng (Warmups)
                         </button>
                         <button
                           type="button"
@@ -1282,7 +1282,7 @@ export default function Nodes() {
                               : "bg-slate-905 text-slate-400 hover:text-slate-200"
                           }`}
                         >
-                          ⚡ Lesson Flow
+                          Lesson Flow
                         </button>
                         <button
                           type="button"
@@ -1293,7 +1293,7 @@ export default function Nodes() {
                               : "bg-slate-905 text-slate-400 hover:text-slate-200"
                           }`}
                         >
-                          🎴 Thẻ nhớ
+                          Thẻ nhớ
                         </button>
                         <button
                           type="button"
@@ -1304,7 +1304,7 @@ export default function Nodes() {
                               : "bg-slate-905 text-slate-400 hover:text-slate-200"
                           }`}
                         >
-                          📝 Quiz bài tập
+                          Quiz bài tập
                         </button>
                         <button
                           type="button"
@@ -1315,7 +1315,7 @@ export default function Nodes() {
                               : "bg-slate-905 text-slate-400 hover:text-slate-200"
                           }`}
                         >
-                          🎙️ Podcast
+                          Podcast
                         </button>
                         <button
                           type="button"
@@ -1326,7 +1326,7 @@ export default function Nodes() {
                               : "bg-slate-905 text-slate-400 hover:text-slate-200"
                           }`}
                         >
-                          📦 Tài liệu PDF
+                          Tài liệu PDF
                         </button>
                       </div>
 
diff --git a/admin/src/pages/Philosofun.jsx b/admin/src/pages/Philosofun.jsx
index 83ab81a..c206540 100644
--- a/admin/src/pages/Philosofun.jsx
+++ b/admin/src/pages/Philosofun.jsx
@@ -199,7 +199,7 @@ export default function Philosofun() {
                   </div>
                   <div className="mt-4 pt-3 border-t border-slate-900 flex items-center justify-between text-2xs text-slate-500">
                     <span className="truncate max-w-[180px]" title={video.videoUrl}>
-                      🔗 {video.videoUrl}
+                      {video.videoUrl}
                     </span>
                     <span>
                       {new Date(video.createdAt).toLocaleDateString('vi-VN')}
diff --git a/admin/src/pages/Practice.jsx b/admin/src/pages/Practice.jsx
index 59ed378..fc9e177 100644
--- a/admin/src/pages/Practice.jsx
+++ b/admin/src/pages/Practice.jsx
@@ -350,7 +350,7 @@ export default function Practice() {
                 : 'border-transparent text-slate-400 hover:text-slate-200'
             }`}
           >
-            🎴 Flashcard Ôn Tập
+            Flashcard Ôn Tập
           </button>
           <button
             onClick={() => setActiveTab('matching')}
@@ -360,7 +360,7 @@ export default function Practice() {
                 : 'border-transparent text-slate-400 hover:text-slate-200'
             }`}
           >
-            🧩 Ghép Cặp (Shinkei)
+            Ghép Cặp (Shinkei)
           </button>
           <button
             onClick={() => setActiveTab('quiz')}
@@ -370,7 +370,7 @@ export default function Practice() {
                 : 'border-transparent text-slate-400 hover:text-slate-200'
             }`}
           >
-            📝 Quiz Tổng Hợp
+            Quiz Tổng Hợp
           </button>
         </div>
 
diff --git a/frontend/src/components/practice/SpacedRepetitionDeck.jsx b/frontend/src/components/practice/SpacedRepetitionDeck.jsx
index 2bde387..51fe49b 100644
--- a/frontend/src/components/practice/SpacedRepetitionDeck.jsx
+++ b/frontend/src/components/practice/SpacedRepetitionDeck.jsx
@@ -166,7 +166,7 @@ export default function SpacedRepetitionDeck({
               }}
               className="bg-amber-55 hover:bg-amber-100 text-amber-900 border-2 border-amber-300 px-6 py-3 rounded-3xl text-sm font-bold transition-all shadow-sm flex flex-col items-center justify-center gap-0.5"
             >
-              <span className="text-base flex items-center gap-1">🟡 Khó</span> 
+              <span className="text-base flex items-center gap-1">Khó</span>
               <span className="text-[10px] font-normal text-amber-800 uppercase tracking-wide">Học lại</span>
             </button>
             <button
@@ -176,7 +176,7 @@ export default function SpacedRepetitionDeck({
               }}
               className="bg-emerald-55 hover:bg-emerald-100 text-emerald-900 border-2 border-emerald-300 px-6 py-3 rounded-3xl text-sm font-bold transition-all shadow-sm flex flex-col items-center justify-center gap-0.5"
             >
-              <span className="text-base flex items-center gap-1">🟢 Dễ</span> 
+              <span className="text-base flex items-center gap-1">Dễ</span>
               <span className="text-[10px] font-normal text-emerald-800 uppercase tracking-wide">Thuộc bài</span>
             </button>
           </div>
diff --git a/frontend/src/pages/DebateCorner.jsx b/frontend/src/pages/DebateCorner.jsx
index ed3e0da..dbd5f13 100644
--- a/frontend/src/pages/DebateCorner.jsx
+++ b/frontend/src/pages/DebateCorner.jsx
@@ -185,7 +185,7 @@ const DebateCorner = () => {
                       : "text-gray-600 hover:text-gray-800 dark:text-primary-350 dark:hover:text-primary-100"
                   }`}
                 >
-                  🎭 Kịch bản có sẵn
+                  Kịch bản có sẵn
                 </button>
                 <button
                   type="button"
@@ -196,7 +196,7 @@ const DebateCorner = () => {
                       : "text-gray-600 hover:text-gray-800 dark:text-primary-350 dark:hover:text-primary-100"
                   }`}
                 >
-                  📚 Khái niệm bài học
+                  Khái niệm bài học
                 </button>
               </div>
             </div>
diff --git a/frontend/src/pages/MatchingQuiz.jsx b/frontend/src/pages/MatchingQuiz.jsx
index 1f8bce7..2327566 100644
--- a/frontend/src/pages/MatchingQuiz.jsx
+++ b/frontend/src/pages/MatchingQuiz.jsx
@@ -284,7 +284,7 @@ export default function MatchingQuiz() {
               đúng đem lại 20 điểm. Trả lời sai bị trừ 5 điểm!
             </p>
             <div className="bg-amber-500/10 border border-amber-500/30 rounded-3xl py-3 px-6 text-amber-300 font-bold inline-block text-sm tracking-wide">
-              ✨ Rèn Luyện Tư Duy Hệ Thống ✨
+              Rèn Luyện Tư Duy Hệ Thống
             </div>
             <div>
               <button
@@ -300,7 +300,9 @@ export default function MatchingQuiz() {
           // GAME OVER/VICTORY SCREEN
           <div className="bg-gradient-to-br from-primary-900 via-slate-900 to-slate-900 text-white rounded-3xl p-8 border-2 border-amber-500 shadow-2xl text-center space-y-6 max-w-xl mx-auto relative overflow-hidden">
             <div className="absolute inset-0 bg-[radial-gradient(circle_at_center,rgba(245,158,11,0.15),transparent)] pointer-events-none" />
-            <div className="animate-bounce inline-block text-6xl">🏆</div>
+            <span className="material-symbols-outlined animate-bounce inline-block text-6xl text-amber-400">
+              emoji_events
+            </span>
             <h3 className="text-3xl font-extrabold text-transparent bg-clip-text bg-gradient-to-r from-amber-400 via-yellow-200 to-amber-500 tracking-wider">
               HOÀN THÀNH THỬ THÁCH!
             </h3>
diff --git a/frontend/src/pages/Practice.jsx b/frontend/src/pages/Practice.jsx
index d1ecc0a..b55edce 100644
--- a/frontend/src/pages/Practice.jsx
+++ b/frontend/src/pages/Practice.jsx
@@ -263,7 +263,7 @@ export default function Practice() {
                   : "text-gray-600 dark:text-slate-400 hover:text-gray-800 dark:hover:text-slate-200"
               }`}
             >
-              🎴 Flashcard Ôn Tập
+              Flashcard Ôn Tập
             </button>
             <button
               onClick={() => setActiveTab("shinkei")}
@@ -273,7 +273,7 @@ export default function Practice() {
                   : "text-gray-600 dark:text-slate-400 hover:text-gray-800 dark:hover:text-slate-200"
               }`}
             >
-              🧩 Ghép Cặp (Shinkei)
+              Ghép Cặp (Shinkei)
             </button>
             <button
               onClick={() => setActiveTab("quiz")}
@@ -283,7 +283,7 @@ export default function Practice() {
                   : "text-gray-600 dark:text-slate-400 hover:text-gray-800 dark:hover:text-slate-200"
               }`}
             >
-              📝 Quiz Tổng Hợp
+              Quiz Tổng Hợp
             </button>
           </div>
         </div>
diff --git a/frontend/src/pages/lesson/components/FinalQuiz.jsx b/frontend/src/pages/lesson/components/FinalQuiz.jsx
index b197ebb..a0c93a6 100644
--- a/frontend/src/pages/lesson/components/FinalQuiz.jsx
+++ b/frontend/src/pages/lesson/components/FinalQuiz.jsx
@@ -115,9 +115,11 @@ export function FinalQuiz({ dbFlashcards, onComplete }) {
           ? "bg-gradient-to-br from-emerald-50 to-green-50/30 border-green-200 text-green-950"
           : "bg-gradient-to-br from-rose-50 to-red-50/30 border-primary-200 dark:border-primary-800 text-primary-950"
       }`}>
-        <div className="text-5xl animate-bounce">
-          {passed ? "🏆" : "❌"}
-        </div>
+        <span
+          className={`material-symbols-outlined text-5xl animate-bounce ${passed ? "text-amber-400" : "text-red-500"}`}
+        >
+          {passed ? "emoji_events" : "cancel"}
+        </span>
         <h3 className="text-2xl font-extrabold tracking-wide">
           {passed ? "VƯỢT QUA KỲ KIỂM TRA!" : "KẾT QUẢ KHÔNG ĐẠT!"}
         </h3>
diff --git a/frontend/src/pages/lesson/components/WarmupSection.jsx b/frontend/src/pages/lesson/components/WarmupSection.jsx
index 4286365..9ccec04 100644
--- a/frontend/src/pages/lesson/components/WarmupSection.jsx
+++ b/frontend/src/pages/lesson/components/WarmupSection.jsx
@@ -138,7 +138,7 @@ function WorldviewFilterGame({ data, onDone }) {
           Đồng chí hãy nhập vai thành một nhà biện chứng thực tế! Nhiệm vụ của đồng chí là phân loại đúng <strong>5 tình huống/phát ngôn thực tế</strong> vào 3 nhóm thế giới quan khác nhau trong vòng <strong>60 giây</strong> để mở khóa danh hiệu huyền thoại:
         </p>
         <div className="bg-amber-500/10 border border-amber-500/30 rounded-3xl py-3 px-6 text-amber-300 font-bold inline-block text-base tracking-wide">
-          ✨ Bậc Thầy Nhìn Thấu Nhân Sinh ✨
+          Bậc Thầy Nhìn Thấu Nhân Sinh
         </div>
         <div>
           <button
@@ -157,7 +157,9 @@ function WorldviewFilterGame({ data, onDone }) {
     return (
       <div className="bg-gradient-to-br from-amber-950 via-slate-900 to-slate-900 text-white rounded-3xl p-8 border-2 border-amber-500 shadow-2xl text-center space-y-6 relative overflow-hidden">
         <div className="absolute inset-0 bg-[radial-gradient(circle_at_center,rgba(245,158,11,0.15),transparent)] pointer-events-none" />
-        <div className="animate-bounce inline-block text-6xl">🏆</div>
+        <span className="material-symbols-outlined animate-bounce inline-block text-6xl text-amber-400">
+          emoji_events
+        </span>
         <h3 className="text-3xl font-extrabold text-transparent bg-clip-text bg-gradient-to-r from-amber-400 via-yellow-200 to-amber-500 tracking-wider">
           CHÚC MỪNG CHIẾN THẮNG!
         </h3>
@@ -194,7 +196,9 @@ function WorldviewFilterGame({ data, onDone }) {
   if (isGameOver) {
     return (
       <div className="bg-slate-950 text-white rounded-3xl p-8 border border-red-600/30 shadow-xl text-center space-y-5">
-        <div className="text-primary-500 inline-block text-5xl">☠️</div>
+        <span className="material-symbols-outlined text-primary-500 inline-block text-5xl">
+          sentiment_very_dissatisfied
+        </span>
         <h3 className="text-2xl font-bold text-primary-500">THỬ THÁCH THẤT BẠI!</h3>
         <p className="text-gray-350 text-sm max-w-md mx-auto">
           {feedback ? feedback.text : "Đồng chí đã hết thời gian hoặc lựa chọn nhầm thế giới quan cảm tính!"}