1. 라우팅 최적화

2. API 호출 병렬 처리
3. UI개선 - 로딩 경험 개선
4. 반응형 디자인
5. API 통신 특이사항 - URL 구성 로직의 잠재적 위험 해결

src/pages/stock/Stock.css

@@ -1,6 +1,8 @@
 .stock {
     display: grid;
     gap: 28px;
+    /* Prevent overflow on small screens */
+    width: 100%;
 }
 
 .stock-header {
@@ -66,7 +68,7 @@
     font-size: 13px;
 }
 
-.stock-status > div {
+.stock-status>div {
     display: flex;
     justify-content: space-between;
     gap: 12px;
@@ -536,15 +538,39 @@
 }
 
 @media (max-width: 768px) {
+    .stock {
+        gap: 20px;
+    }
+
     .stock-panel {
         padding: 16px;
+        gap: 12px;
+    }
+
+    .stock-filter-row {
+        gap: 12px;
+        grid-template-columns: 1fr;
+    }
+
+    .stock-header h1 {
+        font-size: 28px;
+    }
+
+    .stock-actions {
+        width: 100%;
+    }
+
+    .stock-actions .button {
+        flex: 1;
+        text-align: center;
+        justify-content: center;
     }
 
     .stock-card {
         padding: 16px;
     }
 
-    .stock-status > div {
+    .stock-status>div {
         gap: 8px;
     }
 
@@ -568,13 +594,19 @@
     }
 
     .stock-holdings__metric {
-        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
+        grid-template-columns: repeat(2, 1fr);
         align-items: center;
         justify-items: start;
+        gap: 8px 16px;
+    }
+
+    /* Make the last item span full width if it's odd */
+    .stock-holdings__metric>*:last-child:nth-child(odd) {
+        grid-column: 1 / -1;
     }
 
     .stock-holdings__metric span {
-        font-size: 12px;
+        font-size: 11px;
     }
 
     .stock-holdings__metric strong {
@@ -591,4 +623,4 @@
     .stock-holdings__metric strong {
         font-size: 14px;
     }
-}
+}