diff --git a/frontend/src/components/TaskTree/TaskFlowView.tsx b/frontend/src/components/TaskTree/TaskFlowView.tsx
index d452241..ab7f23e 100644
--- a/frontend/src/components/TaskTree/TaskFlowView.tsx
+++ b/frontend/src/components/TaskTree/TaskFlowView.tsx
@@ -14,6 +14,10 @@ import type { ModalTarget } from "./TaskTreeViewer";
 function fmtTime(d: string | null) { if (!d) return ""; const dt = new Date(d); const pad = (n: number) => String(n).padStart(2, "0"); return `${dt.getFullYear()}-${pad(dt.getMonth() + 1)}-${pad(dt.getDate())} ${pad(dt.getHours())}:${pad(dt.getMinutes())}`; }
 function isMain(t: TaskResponse) { return !t.parent_task_id || t.task_type === "TRANSFER" || t.task_type === "RECOVERY" || (!t.task_type && !!t.parent_task_id); }
 function active(s: string) { return s === "WIP" || s === "PENDING"; }
+/** 微型右箭头 SVG */
+function ArrowRight({ color = "#9ca3af" }: { color?: string }) {
+  return <svg className="h-3 w-3 shrink-0" viewBox="0 0 8 8"><polygon points="0,0 8,4 0,8" fill={color} /></svg>;
+}
 function parseImages(s: string | null | undefined): string[] { if (!s) return []; try { return JSON.parse(s); } catch { return []; } }
 function imageUrl(u: string) { if (!u) return ""; return u.startsWith("http") ? u : import.meta.env.VITE_API_BASE_URL + (u.startsWith("/") ? u : "/" + u); }
 
@@ -121,43 +125,50 @@ export const TaskFlowView = memo(function TaskFlowView({ tasks, onAction, curren
 
       {/* ─── 焦点模式 ─── */}
       {!showFullMap && (
-        <div className="flex flex-col items-center gap-6">
+        <div className="flex flex-col items-center gap-4">
           {legacySubs.length > 0 && (
             <div className="rounded-lg border border-dashed border-orange-200 bg-orange-50 px-3 py-1.5 text-center">
               <p className="text-[10px] font-medium text-orange-600">⚠ {legacySubs.length} 个遗留分支仍在进行中</p>
             </div>
           )}
-          {/* 每个活跃主线一行：左翼 + 中央 + 右翼 */}
           {activeMain.map(mainTask => {
             const allSubs = [...activeSubs, ...legacySubs];
             const leftSubs = allSubs.filter((_, i) => i % 2 === 0);
             const rightSubs = allSubs.filter((_, i) => i % 2 === 1);
             return (
-              <div key={mainTask.id} className="flex flex-row items-center w-full">
-                {/* 左翼 */}
-                <div className="flex-1 flex justify-end items-center pr-4 gap-1">
+              <div key={mainTask.id} className="flex flex-row items-start w-full">
+                {/* 左翼：flex-col 纵向堆叠，右对齐 */}
+                <div className="flex-1 flex flex-col items-end justify-center gap-2 pr-2">
                   {leftSubs.map(t => {
                     const isLegacy = legacySubs.includes(t);
                     return (
                       <div key={t.id} className="flex items-center">
-                        <SlimCard task={t} assigneeName={assigneeNames?.[t.assignee_id || ""]} active legacy={isLegacy} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
-                        <div className={`w-6 border-t-2 ${isLegacy ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
+                        <SlimCard task={t} active legacy={isLegacy} assigneeName={assigneeNames?.[t.assignee_id || ""]} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
+                        {/* 连线+箭头 → 右侧指向中央 */}
+                        <div className="flex items-center">
+                          <div className={`w-5 border-t-2 ${isLegacy ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
+                          <ArrowRight color={isLegacy ? "#fdba74" : "#9ca3af"} />
+                        </div>
                       </div>
                     );
                   })}
                 </div>
                 {/* 中央主干 */}
                 <div className="shrink-0 z-10">
-                  <SlimCard task={mainTask} assigneeName={assigneeNames?.[mainTask.assignee_id || ""]} active onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
+                  <SlimCard task={mainTask} active assigneeName={assigneeNames?.[mainTask.assignee_id || ""]} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
                 </div>
-                {/* 右翼 */}
-                <div className="flex-1 flex justify-start items-center pl-4 gap-1">
+                {/* 右翼：flex-col 纵向堆叠，左对齐 */}
+                <div className="flex-1 flex flex-col items-start justify-center gap-2 pl-2">
                   {rightSubs.map(t => {
                     const isLegacy = legacySubs.includes(t);
                     return (
                       <div key={t.id} className="flex items-center">
-                        <div className={`w-6 border-t-2 ${isLegacy ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
-                        <SlimCard task={t} assigneeName={assigneeNames?.[t.assignee_id || ""]} active legacy={isLegacy} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
+                        {/* 连线+箭头 → 右侧指向外侧 */}
+                        <div className="flex items-center">
+                          <ArrowRight color={isLegacy ? "#fdba74" : "#9ca3af"} />
+                          <div className={`w-5 border-t-2 ${isLegacy ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
+                        </div>
+                        <SlimCard task={t} active legacy={isLegacy} assigneeName={assigneeNames?.[t.assignee_id || ""]} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
                       </div>
                     );
                   })}
@@ -177,47 +188,50 @@ export const TaskFlowView = memo(function TaskFlowView({ tasks, onAction, curren
             const hasLegacyActive = children.some(c => !isMain(c) && !active(mainTask.status));
             const leftChildren = children.filter((_, i) => i % 2 === 0);
             const rightChildren = children.filter((_, i) => i % 2 === 1);
+            const lineStyle = hasLegacyActive && !active(mainTask.status);
 
             return (
               <div key={mainTask.id} className="relative">
                 {/* 垂直轴线贯穿中央 */}
                 <div className="absolute left-1/2 top-0 bottom-0 w-0.5 bg-gray-200 -translate-x-1/2 z-0" />
 
-                {/* 水平一行：左翼 + 中央 + 右翼 */}
-                <div className="flex flex-row items-center w-full">
-                  {/* 左翼分支 */}
-                  <div className="flex-1 flex justify-end items-center pr-4 gap-1">
+                <div className="flex flex-row items-start w-full">
+                  {/* 左翼：flex-col */}
+                  <div className="flex-1 flex flex-col items-end justify-center gap-2 pr-2">
                     {leftChildren.map(c => (
                       <div key={c.id} className="flex items-center">
-                        <SlimCard task={c} assigneeName={assigneeNames?.[c.assignee_id || ""]}
-                          active={active(c.status)} legacy={hasLegacyActive && !active(mainTask.status)}
-                          onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
-                        <div className={`w-6 border-t-2 ${hasLegacyActive && !active(mainTask.status) ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
+                        <SlimCard task={c} active={active(c.status)} legacy={lineStyle}
+                          assigneeName={assigneeNames?.[c.assignee_id || ""]} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
+                        <div className="flex items-center">
+                          <div className={`w-5 border-t-2 ${lineStyle ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
+                          <ArrowRight color={lineStyle ? "#fdba74" : "#9ca3af"} />
+                        </div>
                       </div>
                     ))}
                   </div>
-                  {/* 中央主干 */}
+                  {/* 中央 */}
                   <div className="shrink-0 z-10 relative">
-                    <SlimCard task={mainTask} assigneeName={assigneeNames?.[mainTask.assignee_id || ""]}
-                      active={active(mainTask.status)} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
+                    <SlimCard task={mainTask} active={active(mainTask.status)}
+                      assigneeName={assigneeNames?.[mainTask.assignee_id || ""]} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
                     {active(mainTask.status) && (
                       <div className="absolute -top-1 -left-1 h-3 w-3 rounded-full bg-green-400 border-2 border-white" />
                     )}
                   </div>
-                  {/* 右翼分支 */}
-                  <div className="flex-1 flex justify-start items-center pl-4 gap-1">
+                  {/* 右翼：flex-col */}
+                  <div className="flex-1 flex flex-col items-start justify-center gap-2 pl-2">
                     {rightChildren.map(c => (
                       <div key={c.id} className="flex items-center">
-                        <div className={`w-6 border-t-2 ${hasLegacyActive && !active(mainTask.status) ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
-                        <SlimCard task={c} assigneeName={assigneeNames?.[c.assignee_id || ""]}
-                          active={active(c.status)} legacy={hasLegacyActive && !active(mainTask.status)}
-                          onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
+                        <div className="flex items-center">
+                          <ArrowRight color={lineStyle ? "#fdba74" : "#9ca3af"} />
+                          <div className={`w-5 border-t-2 ${lineStyle ? "border-dashed border-orange-300" : "border-solid border-gray-400"}`} />
+                        </div>
+                        <SlimCard task={c} active={active(c.status)} legacy={lineStyle}
+                          assigneeName={assigneeNames?.[c.assignee_id || ""]} onAction={onAction} currentUser={currentUser} onViewRecords={setRecordsTask} />
                       </div>
                     ))}
                   </div>
                 </div>
 
-                {/* 区间连接 ▼ */}
                 {allMains.indexOf(mainTask) < allMains.length - 1 && (
                   <div className="flex justify-center py-2">
                     <span className="text-[10px] text-gray-300">▼</span>