diff --git a/assets/style.css b/assets/style.css
index cbbd7e6..b642414 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -1338,6 +1338,8 @@ video.video-thumb.video-thumb-mini {
 .home-pin svg { position: absolute; left: 0; top: 0; overflow: visible; }
 .home-pin-line { stroke: #8aa0b8; stroke-width: 1.5; }
 .home-pin-dot { fill: #3b82f6; }
+/* 引线末端的箭头（指向真实位置那个圆点）—— 活动多了也分得清哪张卡片归哪个点 */
+.home-arrow { fill: #8aa0b8; }
 .home-card {
     position: absolute; transform: translate(-50%, -50%);
     display: flex; align-items: center; gap: 7px;
diff --git a/templates/activities/index.php b/templates/activities/index.php
index 6298bde..700506f 100644
--- a/templates/activities/index.php
+++ b/templates/activities/index.php
@@ -159,6 +159,7 @@ foreach ($activities as $a) {
     var CARD_W = 186, CARD_H = 58;    // 卡片名义尺寸（按中心距判碰用）
     var CLUSTER_DIST = 110;           // 中心距小于它 → 归为同簇（要扇开）
     var CANVAS = 600, C = CANVAS / 2; // 每枚标记的 content 画布（真实位置在画布中心）
+    var DOT_R = 3;                    // 真实位置那个小圆点的半径（引线箭头要给它让位）
 
     function shortTitle(t) {
         return (t && t.length > 10) ? t.slice(0, 10) + '…' : (t || '');
@@ -181,8 +182,11 @@ foreach ($activities as $a) {
         if (s.memberCount > names.length) t += ' 等 ' + s.memberCount + ' 人';
         return t;
     }
-    function cardHtml(s, dx, dy) {
+    function cardHtml(s, dx, dy, idx) {
         var moved = Math.abs(dx) > 0.5 || Math.abs(dy) > 0.5;
+        /* 箭头 marker 的 id 必须逐枚唯一：每枚标记的 content 都自带一份 <defs>，
+           同页里 id 重名会指向先出现的那份（虽然样子一样，但属于隐患）。 */
+        var arrowId = 'home-arrow-' + (idx || 0);
         var inner = s.img
             ? '<img src="' + esc(s.img) + '" alt="">'
             : '<span>📍</span>';
@@ -194,9 +198,19 @@ foreach ($activities as $a) {
         var html = '<div class="home-pin">'
             + '<svg width="' + CANVAS + '" height="' + CANVAS + '">';
         if (moved) {
-            html += '<line class="home-pin-line" x1="' + C + '" y1="' + C + '"'
-                 +  ' x2="' + (C + dx) + '" y2="' + (C + dy) + '"/>'
-                 +  '<circle class="home-pin-dot" cx="' + C + '" cy="' + C + '" r="3"/>';
+            /* 引线**从卡片指向真实位置**：箭头画在真实位置那一端（marker-end），
+               活动多了也能一眼看出这张卡片归哪个点；终点退开 DOT_R+2 px，
+               免得箭头盖住圆心那个小圆点。 */
+            var len = Math.hypot(dx, dy) || 1;
+            var gap = DOT_R + 2;
+            var ex = C + dx / len * gap, ey = C + dy / len * gap;
+            html += '<defs><marker id="' + arrowId + '" viewBox="0 0 10 10"'
+                 +  ' refX="9" refY="5" markerWidth="9" markerHeight="9"'
+                 +  ' markerUnits="userSpaceOnUse" orient="auto">'
+                 +  '<path class="home-arrow" d="M0,1 L10,5 L0,9 z"/></marker></defs>'
+                 +  '<line class="home-pin-line" x1="' + (C + dx) + '" y1="' + (C + dy) + '"'
+                 +  ' x2="' + ex + '" y2="' + ey + '" marker-end="url(#' + arrowId + ')"/>'
+                 +  '<circle class="home-pin-dot" cx="' + C + '" cy="' + C + '" r="' + DOT_R + '"/>';
         }
         html += '</svg>'
             + '<div class="home-card" style="left:' + (C + dx) + 'px;top:' + (C + dy) + 'px;"'
@@ -210,12 +224,12 @@ foreach ($activities as $a) {
     }
 
     var markers = [];   // { mk: AMap.Marker, spot: spot }
-    spots.forEach(function (s) {
+    spots.forEach(function (s, si) {
         /* ⚠️ position 必须是 [lng, lat] 数组：传 {lng,lat} 裸对象会让 AMap 抛错，
            整个绘制循环当场中断（批 11 的「光秃秃地图」就是它）。 */
         var mk = new AMap.Marker({
             position: [s.lng, s.lat],
-            content: cardHtml(s, 0, 0),
+            content: cardHtml(s, 0, 0, si),
             anchor: 'center',
             map: map,
         });
@@ -251,14 +265,14 @@ foreach ($activities as $a) {
         卡片被甩到容器外、被上方的标签栏挡住，点不到。） */
     function relayout() {
         var items = [];
-        markers.forEach(function (m) {
+        markers.forEach(function (m, mi) {
             var base = null;
             try {
                 base = map.lngLatToContainer(new AMap.LngLat(m.spot.lng, m.spot.lat));
             } catch (e) {
                 base = null;
             }
-            items.push({ mk: m.mk, spot: m.spot, base: base, dx: 0, dy: 0 });
+            items.push({ mk: m.mk, spot: m.spot, base: base, dx: 0, dy: 0, idx: mi });
         });
 
         /* 并查集：中心距 < CLUSTER_DIST 的归为同簇 */
@@ -352,7 +366,7 @@ foreach ($activities as $a) {
         });
 
         items.forEach(function (it) {
-            if (it.base) it.mk.setContent(cardHtml(it.spot, it.dx, it.dy));
+            if (it.base) it.mk.setContent(cardHtml(it.spot, it.dx, it.dy, it.idx));
         });
     }
     relayout();