diff --git a/cardList.html b/cardList.html
index 959f2b2..bdb5d59 100644
--- a/cardList.html
+++ b/cardList.html
@@ -465,30 +465,60 @@
                             if (searchInput && t.searchPlaceholder) searchInput.placeholder = t.searchPlaceholder;
                         }
 
-                        function getCardTotal(cardNumber) {
-                            return cardList.filter((c) => c.Number === cardNumber).reduce((s, c) => s + c.count, 0);
-                        }
-
                         // 전역 핸들러
                         window.handleCount = function (imgSrc, delta, event) {
                             event.stopPropagation();
                             const card = cardList.find((c) => c.imgSrc === imgSrc);
                             if (!card) return;
 
-                            let didChange = false;
-                            const currentTotal = getCardTotal(card.Number);
+                            // 1. 데이터 업데이트
+                            const currentTotal = cardList.filter((c) => c.Number === card.Number).reduce((s, c) => s + c.count, 0);
                             if (delta > 0 && currentTotal < (card.maxCount || 4)) {
                                 card.count++;
-                                didChange = true;
                             } else if (delta < 0 && card.count > 0) {
                                 card.count--;
                                 if (card.count === 0) card.key = false;
-                                didChange = true;
                             }
 
-                            if (!didChange) return;
+                            // 2. UI 업데이트
+                            const container = document.querySelector(`.cardContainer[data-imgsrc="${imgSrc}"]`);
+                            if (container) {
+                                const minusBtn = container.querySelector('.minusBtn');
+                                const plusBtn = container.querySelector('.plusBtn');
+                                const countSpan = container.querySelector('.countText');
+                                const keyBtn = container.querySelector('.keyBtn'); // 클래스로 직접 참조
+
+                                if (countSpan) countSpan.textContent = card.count;
+
+                                // 마이너스 버튼 제어
+                                if (minusBtn) {
+                                    if (card.count > 0) {
+                                        minusBtn.classList.remove('invisible');
+                                        minusBtn.classList.add('visible');
+                                    } else {
+                                        minusBtn.classList.remove('visible');
+                                        minusBtn.classList.add('invisible');
+                                    }
+                                }
+
+                                // 플러스 버튼 제어 (isMax 결과에 따라 즉시 반영)
+                                if (plusBtn) {
+                                    if (isMax(card)) {
+                                        plusBtn.classList.remove('visible');
+                                        plusBtn.classList.add('invisible');
+                                    } else {
+                                        plusBtn.classList.remove('invisible');
+                                        plusBtn.classList.add('visible');
+                                    }
+                                }
+
+                                // 키 버튼 상태 업데이트
+                                if (keyBtn) {
+                                    keyBtn.className = `keyBtn w-full py-1 rounded text-[9px] lg:text-[10px] font-bold border transition-all ${card.key && card.count > 0 ? 'bg-indigo-600 border-indigo-600 text-white shadow-md' : 'bg-white border-slate-200 text-slate-400'}`;
+                                }
+                            }
+
                             syncToStorageAndCounters();
-                            updateCardList();
                         };
 
                         window.handleKey = function (imgSrc, event) {
@@ -503,12 +533,20 @@
                                 card.key = true;
                             }
 
+                            const container = document.querySelector(`.cardContainer[data-imgsrc="${imgSrc}"]`);
+                            if (container) {
+                                // 특정 클래스(.keyBtn)를 가진 요소를 정확히 찾아 변경
+                                const keyBtn = container.querySelector('.keyBtn');
+                                if (keyBtn) {
+                                    keyBtn.className = `keyBtn w-full py-1 rounded text-[9px] lg:text-[10px] font-bold border transition-all ${card.key && card.count > 0 ? 'bg-indigo-600 border-indigo-600 text-white shadow-md' : 'bg-white border-slate-200 text-slate-400'}`;
+                                }
+                            }
+
                             syncToStorageAndCounters();
-                            updateCardList();
                         };
 
                         function isMax(card) {
-                            return getCardTotal(card.Number) >= (card.maxCount || 4);
+                            return cardList.filter((c) => c.Number === card.Number).reduce((s, c) => s + c.count, 0) >= (card.maxCount || 4);
                         }
 
                         function updateCardList() {