diff --git a/src/renderer/handlers/hover-preview.js b/src/renderer/handlers/hover-preview.js
index 18f0ca2..17d130d 100644
--- a/src/renderer/handlers/hover-preview.js
+++ b/src/renderer/handlers/hover-preview.js
@@ -1,9 +1,14 @@
 const DELAY = 1000;
 
-let _el      = null;
-let _imgEl   = null;
-let _timer   = null;
-let _visible = false;
+const SVG_NS = 'http://www.w3.org/2000/svg';
+const RADIUS = 20;
+const CIRC   = 2 * Math.PI * RADIUS; // ~125.66
+
+let _el        = null;
+let _imgEl     = null;
+let _timer     = null;
+let _visible   = false;
+let _loaderEl  = null;
 
 export function init() {
   _el = document.createElement('div');
@@ -22,7 +27,10 @@ export function setupCard(card) {
 function _onEnter() {
   const card = this;
   clearTimeout(_timer);
+  _showLoader(card);
+
   _timer = setTimeout(() => {
+    _removeLoader();
     const thumb = card.querySelector('img.card-thumb');
     if (!thumb) return;
     _imgEl.src = thumb.src;
@@ -35,12 +43,60 @@ function _onLeave() {
   clearTimeout(_timer);
   _timer   = null;
   _visible = false;
-  _el.style.display     = 'none';
-  _el.style.visibility  = 'hidden';
+  _removeLoader();
+  _el.style.display    = 'none';
+  _el.style.visibility = 'hidden';
 }
 
+// ── 원형 로딩바 ──────────────────────────────────
+
+function _showLoader(card) {
+  _removeLoader();
+
+  const svg = document.createElementNS(SVG_NS, 'svg');
+  svg.classList.add('card-hover-loader');
+  svg.setAttribute('viewBox', '0 0 48 48');
+
+  // 배경 원
+  const bg = document.createElementNS(SVG_NS, 'circle');
+  bg.classList.add('loader-bg');
+  bg.setAttribute('cx', '24');
+  bg.setAttribute('cy', '24');
+  bg.setAttribute('r', '24');
+
+  // 트랙 링
+  const track = document.createElementNS(SVG_NS, 'circle');
+  track.classList.add('loader-track');
+  track.setAttribute('cx', '24');
+  track.setAttribute('cy', '24');
+  track.setAttribute('r', String(RADIUS));
+
+  // 진행 호
+  const progress = document.createElementNS(SVG_NS, 'circle');
+  progress.classList.add('loader-progress');
+  progress.setAttribute('cx', '24');
+  progress.setAttribute('cy', '24');
+  progress.setAttribute('r', String(RADIUS));
+  progress.style.strokeDasharray  = CIRC;
+  progress.style.strokeDashoffset = CIRC;
+
+  svg.appendChild(bg);
+  svg.appendChild(track);
+  svg.appendChild(progress);
+  card.appendChild(svg);
+  _loaderEl = svg;
+}
+
+function _removeLoader() {
+  if (_loaderEl) {
+    _loaderEl.remove();
+    _loaderEl = null;
+  }
+}
+
+// ── 이미지 팝업 ──────────────────────────────────
+
 function _show(card) {
-  // 위치 계산 전 화면 밖에 렌더링해서 실제 크기를 측정
   _el.style.display    = 'block';
   _el.style.visibility = 'hidden';
   _el.style.left = '0px';
@@ -55,14 +111,12 @@ function _show(card) {
     const vh = window.innerHeight;
     const gap = 16;
 
-    // 가로: 카드 오른쪽 우선, 공간 부족 시 왼쪽
     let left = cardRect.right + gap;
     if (left + popup.width > vw - 8) {
       left = cardRect.left - popup.width - gap;
     }
     left = Math.max(8, Math.min(left, vw - popup.width - 8));
 
-    // 세로: 카드와 중앙 정렬, 화면 경계 클램프
     let top = cardRect.top + (cardRect.height - popup.height) / 2;
     top = Math.max(8, Math.min(top, vh - popup.height - 8));
 
diff --git a/src/renderer/style.css b/src/renderer/style.css
index eab4416..4c595e0 100644
--- a/src/renderer/style.css
+++ b/src/renderer/style.css
@@ -269,6 +269,40 @@ body {
 @keyframes spin { to { transform: rotate(360deg); } }
 #loading p { color: var(--text); font-size: 14px; }
 
+/* ── 카드 호버 원형 로딩바 ── */
+.card-hover-loader {
+  position: absolute;
+  top: calc(var(--thumb-size) / 2);
+  left: 50%;
+  transform: translate(-50%, -50%);
+  width: 52px;
+  height: 52px;
+  pointer-events: none;
+  z-index: 10;
+  overflow: visible;
+}
+.card-hover-loader .loader-bg {
+  fill: rgba(0, 0, 0, 0.55);
+}
+.card-hover-loader .loader-track {
+  fill: none;
+  stroke: rgba(255, 255, 255, 0.15);
+  stroke-width: 3;
+}
+.card-hover-loader .loader-progress {
+  fill: none;
+  stroke: var(--accent);
+  stroke-width: 3;
+  stroke-linecap: round;
+  transform-origin: 24px 24px;
+  transform: rotate(-90deg);
+  animation: hover-loader-fill 1s linear forwards;
+}
+@keyframes hover-loader-fill {
+  from { stroke-dashoffset: 125.66; }
+  to   { stroke-dashoffset: 0; }
+}
+
 /* ── 호버 이미지 팝업 ── */
 .hover-preview {
   position: fixed;