diff --git a/frontend-web/.env.development b/frontend-web/.env.development
index 22563825..05435bf2 100644
--- a/frontend-web/.env.development
+++ b/frontend-web/.env.development
@@ -5,7 +5,7 @@
 VITE_USE_REAL_DATA=true
 
 # 任务详情（登录深链 cop-task-detail）数据源：默认真实接口；改成 true 走本地假数据（consumer 外网不可达时调试用）。
-VITE_MOCK_COP_TASK_DETAIL=false
+VITE_MOCK_COP_TASK_DETAIL=true
 
 # Gateway / DeerFlow API
 VITE_BACKEND_BASE_URL=http://127.0.0.1:8001
diff --git a/frontend-web/src/open-canvas/components/ai-writing/ResearchSidebar.tsx b/frontend-web/src/open-canvas/components/ai-writing/ResearchSidebar.tsx
index d464b872..ba103d88 100644
--- a/frontend-web/src/open-canvas/components/ai-writing/ResearchSidebar.tsx
+++ b/frontend-web/src/open-canvas/components/ai-writing/ResearchSidebar.tsx
@@ -1,7 +1,22 @@
 "use client";
 
-import { BookOpen, FileText, LayoutGrid, Loader2, Plus, Settings2 } from "lucide-react";
-import { useEffect, useState } from "react";
+import {
+  BarChart3,
+  BookOpen,
+  FileText,
+  Globe2,
+  LayoutGrid,
+  Loader2,
+  Newspaper,
+  Plus,
+  Search,
+  Settings2,
+  SlidersHorizontal,
+  Sparkles,
+  TrendingUp,
+} from "lucide-react";
+import type { LucideIcon } from "lucide-react";
+import { useEffect, useMemo, useState } from "react";
 import { useNavigate } from "react-router-dom";
 import { useQueryClient } from "@tanstack/react-query";
 
@@ -22,23 +37,62 @@ import type { ResearchTemplate } from "../../api/ai-writing-research-templates";
 import { useWritingForm } from "../../contexts/WritingFormContext";
 import { useAIWriting } from "../../contexts/AIWritingContext";
 
-/**
- * 课题研究左栏（需求 0616 #5）。
- *  - 上半「研究模板」= 研究模板实体（``useResearchTemplates``）；点击一键预填整张写作表单
- *    （文章类型 / 大纲 / 搜索来源 / 字数 / 受众 / 严格模式 / 主题）并展开配置。顶部「配置」
- *    入口进入模板配置页维护这些模板。
- *  - 下半「笔记本」= 我的空间（``useStudioNotebooks``）；点击在右侧内嵌打开该笔记本页。
- */
+type TemplateVisual = {
+  Icon: LucideIcon;
+  iconClass: string;
+  accentClass: string;
+};
+
+const TEMPLATE_VISUALS: TemplateVisual[] = [
+  {
+    Icon: Globe2,
+    iconClass: "bg-blue-50 text-blue-600",
+    accentClass: "bg-blue-500",
+  },
+  {
+    Icon: Newspaper,
+    iconClass: "bg-amber-50 text-amber-600",
+    accentClass: "bg-amber-500",
+  },
+  {
+    Icon: Sparkles,
+    iconClass: "bg-violet-50 text-violet-600",
+    accentClass: "bg-violet-500",
+  },
+  {
+    Icon: TrendingUp,
+    iconClass: "bg-rose-50 text-rose-600",
+    accentClass: "bg-rose-500",
+  },
+  {
+    Icon: BookOpen,
+    iconClass: "bg-emerald-50 text-emerald-600",
+    accentClass: "bg-emerald-500",
+  },
+  {
+    Icon: BarChart3,
+    iconClass: "bg-cyan-50 text-cyan-600",
+    accentClass: "bg-cyan-500",
+  },
+];
+
+function getTemplateVisual(tpl: ResearchTemplate, index: number): TemplateVisual {
+  const text = `${tpl.name} ${tpl.description ?? ""} ${tpl.article_type_key ?? ""}`;
+  if (/网摘|网络|热点|摘/.test(text)) return TEMPLATE_VISUALS[0];
+  if (/周报|周刊|日报|月报/.test(text)) return TEMPLATE_VISUALS[1];
+  if (/要讯|资讯|快讯|简报/.test(text)) return TEMPLATE_VISUALS[2];
+  if (/行业|分析|市场|竞争/.test(text)) return TEMPLATE_VISUALS[3];
+  if (/政策|解读|法规/.test(text)) return TEMPLATE_VISUALS[4];
+  return TEMPLATE_VISUALS[index % TEMPLATE_VISUALS.length];
+}
+
 export function ResearchSidebar({
   viewingNotebookId,
   onOpenNotebook,
   onOpenAllSpaces,
 }: {
-  /** 当前在右侧查看的笔记本 id（高亮用）。 */
   viewingNotebookId?: number | null;
-  /** 点击笔记本 → 在右侧内嵌打开该笔记本页（替换右侧内容）。 */
   onOpenNotebook: (notebookId: number) => void;
-  /** 点击「所有空间」→ 在右侧内嵌打开空间列表页。 */
   onOpenAllSpaces: () => void;
 }) {
   const navigate = useNavigate();
@@ -62,7 +116,7 @@ export function ResearchSidebar({
   } = useWritingForm();
   const queryClient = useQueryClient();
 
-  // 新建空间弹窗（与 workspace-nav-studio 同款）。
+  const [templateSearch, setTemplateSearch] = useState("");
   const [createOpen, setCreateOpen] = useState(false);
   const [name, setName] = useState("");
   const [creating, setCreating] = useState(false);
@@ -72,6 +126,16 @@ export function ResearchSidebar({
     void refresh();
   }, [refresh]);
 
+  const filteredTemplates = useMemo(() => {
+    const keyword = templateSearch.trim().toLowerCase();
+    if (!keyword) return templates;
+    return templates.filter((tpl) =>
+      [tpl.name, tpl.description, tpl.article_type_key]
+        .filter(Boolean)
+        .some((value) => String(value).toLowerCase().includes(keyword)),
+    );
+  }, [templates, templateSearch]);
+
   const handleCreate = async () => {
     const trimmed = name.trim();
     if (!trimmed) return;
@@ -92,8 +156,6 @@ export function ResearchSidebar({
     }
   };
 
-  // 点击研究模板 → ①回填整张写作表单（保持写作态左栏显示与运行配置一致）
-  // ②直接以模板预设进入 AI 写作流程（startWriting）。
   const handleTemplateClick = (tpl: ResearchTemplate) => {
     const intent = tpl.topic?.trim() ?? "";
     const articleType = tpl.article_type_key || "analysis";
@@ -102,7 +164,6 @@ export function ResearchSidebar({
     const wordCount = tpl.word_count > 0 ? tpl.word_count : 800;
     const writingMode = tpl.strict_mode ? "strict" : "loose";
 
-    // 回填表单上下文（写作态左栏据此展示）。
     if (intent) setIntent(intent);
     if (tpl.article_type_key) setArticleType(tpl.article_type_key);
     if (outline) {
@@ -115,7 +176,6 @@ export function ResearchSidebar({
     setStrictMode(tpl.strict_mode);
     setFormExpanded(true);
 
-    // 无主题/意图无法发起写作 → 仅回填表单，由用户补充后手动开始。
     if (!intent) return;
     void startWriting({
       userIntent: intent,
@@ -130,116 +190,191 @@ export function ResearchSidebar({
   };
 
   return (
-    <aside className="flex h-full w-64 shrink-0 flex-col overflow-hidden border-r border-border/70 bg-card/60 backdrop-blur-sm">
-      {/* 上半：研究模板 */}
-      <div className="flex min-h-0 flex-1 flex-col overflow-y-auto px-2 py-3">
-        <div className="px-2 mb-1.5 flex items-center justify-between">
-          <h2 className="text-muted-foreground/70 text-[10px] font-semibold tracking-[0.12em] uppercase select-none">
-            研究模板
-          </h2>
-          <button
-            type="button"
-            onClick={() => navigate("/page/canvas/research-templates")}
-            title="配置研究模板"
-            aria-label="配置研究模板"
-            className="text-muted-foreground/70 hover:text-foreground rounded p-0.5 transition-colors"
-          >
-            <Settings2 className="size-3.5" />
-          </button>
-        </div>
-        {templates.length === 0 ? (
-          <p className="px-2 py-1.5 text-xs text-muted-foreground/70">
-            暂无研究模板，点右上角配置
-          </p>
-        ) : (
-          <div className="flex flex-col gap-1">
-            {templates.map((tpl) => (
-              <button
-                key={tpl.id}
-                type="button"
-                onClick={() => handleTemplateClick(tpl)}
-                title={tpl.description ?? tpl.name}
-                className="flex items-start gap-2 rounded-lg px-2.5 py-1.5 text-left text-muted-foreground transition-colors hover:bg-sidebar-accent/60 hover:text-foreground"
-              >
-                <FileText className="mt-0.5 size-3.5 shrink-0 text-muted-foreground/70" />
-                <span className="min-w-0">
-                  <span className="block truncate text-[13px] font-medium">{tpl.name}</span>
-                  {tpl.description && (
-                    <span className="text-muted-foreground/70 line-clamp-1 block text-[11px]">
-                      {tpl.description}
-                    </span>
-                  )}
-                </span>
-              </button>
-            ))}
+    <aside className="flex h-full w-[320px] shrink-0 flex-col overflow-hidden border-r border-slate-100 bg-white text-slate-700 shadow-[1px_0_18px_rgba(15,23,42,0.03)]">
+      <div className="flex min-h-0 flex-1 flex-col overflow-y-auto overflow-x-hidden px-3 py-4">
+        <section className="mb-5">
+          <div className="mb-3 flex items-center justify-between gap-3 px-1">
+            <button
+              type="button"
+              onClick={() => navigate("/page/canvas/research-templates")}
+              title="配置研究模板"
+              aria-label="配置研究模板"
+              className="group flex items-center gap-2 rounded-lg text-[16px] font-bold text-slate-500 transition-colors hover:text-slate-800"
+            >
+              <SlidersHorizontal className="size-4 text-slate-400" />
+              <span>研究模板</span>
+              <Settings2 className="size-3.5 text-slate-300 opacity-0 transition-opacity group-hover:opacity-100" />
+            </button>
+            <div className="relative w-[150px]">
+              <Search className="pointer-events-none absolute left-3 top-1/2 size-3.5 -translate-y-1/2 text-slate-400" />
+              <input
+                type="text"
+                value={templateSearch}
+                onChange={(event) => setTemplateSearch(event.target.value)}
+                placeholder="搜索写作模板..."
+                className="h-8 w-full rounded-lg border border-slate-200 bg-slate-50/80 pl-8 pr-3 text-[12px] text-slate-600 outline-none transition focus:border-blue-200 focus:bg-white focus:ring-2 focus:ring-blue-100"
+              />
+            </div>
           </div>
-        )}
-      </div>
 
-      {/* 下半：笔记本（我的空间） */}
-      <div className="flex min-h-0 flex-1 flex-col overflow-y-auto border-t border-border/60 px-2 py-3">
-        <h2 className="text-muted-foreground/70 px-2 mb-1.5 text-[10px] font-semibold tracking-[0.12em] uppercase select-none">
-          笔记本
-        </h2>
-        <div className="flex flex-col gap-0.5">
-          {/* 新建空间 */}
-          <button
-            type="button"
-            onClick={() => {
-              setName("");
-              setCreateError("");
-              setCreateOpen(true);
-            }}
-            className="flex items-center gap-2 rounded-lg px-2.5 py-1.5 text-left text-[13px] text-muted-foreground transition-colors hover:bg-sidebar-accent/60 hover:text-foreground"
-          >
-            <Plus className="size-3.5 shrink-0 text-muted-foreground/70" />
-            <span>新建空间</span>
-          </button>
-
-          {notebooksLoading ? (
-            <p className="px-2 py-1.5 text-xs text-muted-foreground/70">加载中…</p>
-          ) : notebooksError ? (
-            <p className="px-2 py-1.5 text-xs text-amber-600">
-              笔记本服务暂不可用（检查空间服务地址 / 账号）
+          {templates.length === 0 ? (
+            <p className="rounded-xl border border-dashed border-slate-200 px-3 py-5 text-center text-xs text-slate-400">
+              暂无研究模板，点击标题配置
+            </p>
+          ) : filteredTemplates.length === 0 ? (
+            <p className="rounded-xl border border-dashed border-slate-200 px-3 py-5 text-center text-xs text-slate-400">
+              暂无匹配模板
             </p>
-          ) : notebooks.length === 0 ? (
-            <p className="px-2 py-1.5 text-xs text-muted-foreground/70">暂无笔记本</p>
           ) : (
-            notebooks.map((nb) => {
-              const active = viewingNotebookId === nb.id;
-              return (
-                <button
-                  key={nb.id}
-                  type="button"
-                  onClick={() => onOpenNotebook(nb.id)}
-                  title={nb.description || nb.name}
-                  className={cn(
-                    "flex items-center gap-2 rounded-lg px-2.5 py-1.5 text-left text-[13px] transition-colors",
-                    active
-                      ? "bg-primary/10 text-primary"
-                      : "text-muted-foreground hover:bg-sidebar-accent/60 hover:text-foreground",
-                  )}
-                >
-                  <BookOpen className="size-3.5 shrink-0 text-muted-foreground/70" />
-                  <span className="truncate">{nb.name}</span>
-                </button>
-              );
-            })
+            <div className="space-y-3">
+              {filteredTemplates.map((tpl, index) => {
+                const visual = getTemplateVisual(tpl, index);
+                const Icon = visual.Icon;
+                return (
+                  <button
+                    key={tpl.id}
+                    type="button"
+                    onClick={() => handleTemplateClick(tpl)}
+                    title={tpl.description ?? tpl.name}
+                    className="group relative flex w-full items-start gap-3 overflow-hidden rounded-[5px] bg-white px-4 py-4 text-left shadow-[0_8px_24px_rgba(15,23,42,0.04)] transition-all hover:-translate-y-0.5 hover:shadow-[0_14px_30px_rgba(30,64,175,0.08)] active:translate-y-0"
+                  >
+                    <span
+                      className={cn(
+                        "flex size-12 shrink-0 items-center justify-center rounded-xl transition-colors",
+                        visual.iconClass,
+                      )}
+                    >
+                      <Icon className="size-6 stroke-[2.2]" />
+                    </span>
+                    <span className="min-w-0 flex-1 pt-0.5">
+                      <span className="block truncate text-[16px] font-bold leading-5 text-slate-900 transition-colors group-hover:text-blue-700">
+                        {tpl.name}
+                      </span>
+                      {tpl.description && (
+                        <span
+                          className="mt-1.5 overflow-hidden text-[13px] leading-6 text-slate-500"
+                          style={{
+                            display: "-webkit-box",
+                            WebkitBoxOrient: "vertical",
+                            WebkitLineClamp: 2,
+                          }}
+                        >
+                          {tpl.description}
+                        </span>
+                      )}
+                    </span>
+                    <span
+                      className={cn(
+                        "absolute bottom-4 left-0 top-4 w-1 rounded-r-full opacity-0 transition-opacity group-hover:opacity-100",
+                        visual.accentClass,
+                      )}
+                    />
+                  </button>
+                );
+              })}
+            </div>
           )}
+        </section>
 
-          {/* 所有空间 */}
-          <button
-            type="button"
-            onClick={onOpenAllSpaces}
-            className="flex items-center gap-2 rounded-lg px-2.5 py-1.5 text-left text-[13px] text-muted-foreground transition-colors hover:bg-sidebar-accent/60 hover:text-foreground"
-          >
-            <LayoutGrid className="size-3.5 shrink-0 text-muted-foreground/70" />
-            <span>所有空间</span>
-          </button>
-        </div>
+        <section className="flex min-h-0 flex-1 flex-col border-t border-slate-100 pt-5">
+          <div className="mb-3 flex items-center justify-between px-2">
+            <h2 className="text-[15px] font-bold tracking-wide text-slate-400">
+              笔记本
+            </h2>
+            <button
+              type="button"
+              onClick={() => {
+                setName("");
+                setCreateError("");
+                setCreateOpen(true);
+              }}
+              title="新建写作空间"
+              aria-label="新建写作空间"
+              className="rounded-md p-1 text-slate-400 transition-colors hover:bg-rose-50 hover:text-rose-600"
+            >
+              <Plus className="size-4 stroke-[2.5]" />
+            </button>
+          </div>
+
+          <div className="min-h-0 flex-1 space-y-2 overflow-y-auto px-1 pb-3">
+            {notebooksLoading ? (
+              <p className="px-3 py-2 text-xs text-slate-400">加载中...</p>
+            ) : notebooksError ? (
+              <p className="rounded-xl bg-amber-50 px-3 py-2 text-xs leading-5 text-amber-700">
+                笔记本服务暂不可用，请检查空间服务地址或账号
+              </p>
+            ) : notebooks.length === 0 ? (
+              <p className="px-3 py-2 text-xs text-slate-400">暂无笔记本</p>
+            ) : (
+              notebooks.map((nb) => {
+                const active = viewingNotebookId === nb.id;
+                const sourceCount = Math.max(0, nb.source_count ?? 0);
+                return (
+                  <button
+                    key={nb.id}
+                    type="button"
+                    onClick={() => onOpenNotebook(nb.id)}
+                    title={nb.description || nb.name}
+                    className={cn(
+                      "group relative flex min-h-14 w-full items-center gap-3 rounded-xl border bg-white px-3 py-2 text-left transition-all",
+                      active
+                        ? "border-rose-100 bg-rose-50/35 text-slate-900 shadow-[0_6px_18px_rgba(244,63,94,0.06)]"
+                        : "border-slate-100/80 text-slate-600 hover:border-slate-200 hover:bg-slate-50/70",
+                    )}
+                  >
+                    {active && (
+                      <span className="absolute bottom-4 left-0 top-4 w-1 rounded-r-full bg-rose-500" />
+                    )}
+                    <span
+                      className={cn(
+                        "flex size-8 shrink-0 items-center justify-center rounded-lg",
+                        active ? "bg-rose-50 text-rose-600" : "bg-slate-100 text-slate-500",
+                      )}
+                    >
+                      <BookOpen className="size-4 stroke-[2.2]" />
+                    </span>
+                    <span className="min-w-0 flex-1">
+                      <span className="block truncate text-[15px] font-medium leading-5">
+                        {nb.name}
+                      </span>
+                      {sourceCount > 0 && (
+                        <span className="mt-1 flex items-center gap-1 text-[11px] text-slate-400">
+                          <FileText className="size-3" />
+                          已有 {sourceCount} 篇排版
+                        </span>
+                      )}
+                    </span>
+                    {sourceCount > 0 && (
+                      <span
+                        className={cn(
+                          "flex size-7 shrink-0 items-center justify-center rounded-full border text-[12px] font-semibold",
+                          active
+                            ? "border-rose-100 bg-rose-50 text-rose-600"
+                            : "border-slate-100 bg-slate-50 text-slate-400",
+                        )}
+                      >
+                        {sourceCount}
+                      </span>
+                    )}
+                  </button>
+                );
+              })
+            )}
+          </div>
+
+          <div className="border-t border-slate-100 px-1 pt-3">
+            <button
+              type="button"
+              onClick={onOpenAllSpaces}
+              className="flex w-full items-center gap-3 rounded-xl px-3 py-3 text-left text-[14px] font-bold text-slate-700 transition-colors hover:bg-slate-50 hover:text-slate-950"
+            >
+              <LayoutGrid className="size-4 text-rose-500 stroke-[2.3]" />
+              <span>所有空间</span>
+            </button>
+          </div>
+        </section>
       </div>
 
-      {/* 新建空间弹窗 */}
       <Dialog open={createOpen} onOpenChange={(v) => !creating && setCreateOpen(v)}>
         <DialogContent className="sm:max-w-md">
           <DialogHeader>