diff --git a/apps/web/src/api/scripts/index.ts b/apps/web/src/api/scripts/index.ts
new file mode 100644
index 000000000..f9d5b5405
--- /dev/null
+++ b/apps/web/src/api/scripts/index.ts
@@ -0,0 +1,2 @@
+export * from "./scripts"
+export * from "./types"
diff --git a/apps/web/src/api/scripts/scripts.ts b/apps/web/src/api/scripts/scripts.ts
new file mode 100644
index 000000000..4ee28f146
--- /dev/null
+++ b/apps/web/src/api/scripts/scripts.ts
@@ -0,0 +1,37 @@
+/**
+ * 文案库 API
+ * 对接后端 /api/v1/scripts（CRUD + 列表解包）
+ */
+import apiClient from "../client"
+import type {
+  ScriptItem,
+  ScriptListResponse,
+  CreateScriptRequest,
+  UpdateScriptRequest,
+} from "./types"
+
+/** 获取文案列表 — 必须解包 items（后端返回 {items,total}）*/
+export const getScripts = async (): Promise<ScriptItem[]> => {
+  const response = await apiClient.get<ScriptListResponse | ScriptItem[]>("/scripts")
+  const data = response.data as unknown
+  if (Array.isArray(data)) return data
+  const items = (data as { items?: ScriptItem[] })?.items
+  return Array.isArray(items) ? items : []
+}
+
+/** 新建文案 */
+export const createScript = async (data: CreateScriptRequest): Promise<ScriptItem> => {
+  const response = await apiClient.post<ScriptItem>("/scripts", data)
+  return response.data
+}
+
+/** 更新文案 */
+export const updateScript = async (id: string, data: UpdateScriptRequest): Promise<ScriptItem> => {
+  const response = await apiClient.put<ScriptItem>(`/scripts/${id}`, data)
+  return response.data
+}
+
+/** 删除文案 */
+export const deleteScript = async (id: string): Promise<void> => {
+  await apiClient.delete(`/scripts/${id}`)
+}
diff --git a/apps/web/src/api/scripts/types.ts b/apps/web/src/api/scripts/types.ts
new file mode 100644
index 000000000..8fa0f30e4
--- /dev/null
+++ b/apps/web/src/api/scripts/types.ts
@@ -0,0 +1,24 @@
+/**
+ * 文案库 API — 类型定义
+ * 对接后端 /api/v1/scripts
+ */
+export interface ScriptItem {
+  id: string
+  title: string
+  content: string
+  char_count: number
+  created_at: string
+  updated_at?: string
+}
+
+export interface ScriptListResponse {
+  items: ScriptItem[]
+  total: number
+}
+
+export interface CreateScriptRequest {
+  title: string
+  content: string
+}
+
+export type UpdateScriptRequest = Partial<CreateScriptRequest>
diff --git a/apps/web/src/api/tts/types.ts b/apps/web/src/api/tts/types.ts
index 39e1046d5..c3e686017 100644
--- a/apps/web/src/api/tts/types.ts
+++ b/apps/web/src/api/tts/types.ts
@@ -103,6 +103,7 @@ export interface TTSPreviewRequest {
   voice_id: string
   speed?: number
   pitch?: number
+  emotion?: string // 情绪参数：natural/excited/calm/friendly
 }
 
 /** TTS 试听响应 */
diff --git a/apps/web/src/components/layout/MainLayout.css b/apps/web/src/components/layout/MainLayout.css
index b2302d8da..890f417b3 100644
--- a/apps/web/src/components/layout/MainLayout.css
+++ b/apps/web/src/components/layout/MainLayout.css
@@ -5,7 +5,7 @@
      .xx-app-shell          全屏 flex 容器
      ├── header (xx-top-nav) 顶部导航（Header.tsx 管理）
      └── .xx-app-body       水平 flex 行
-         ├── .xx-app-sidebar  左侧侧边栏（240px / 64px 折叠）
+         ├── .xx-app-sidebar  左侧侧边栏（128px / 64px 折叠）
          └── .xx-app-content  主内容区（自适应）
 
    所有尺寸/颜色均使用 global.css 设计系统变量
@@ -31,7 +31,7 @@
 
 /* ── 侧边栏 ───────────────────────────────────────────────── */
 .xx-app-sidebar {
-  width: 240px;
+  width: 128px;
   flex-shrink: 0;
   position: sticky;
   top: 0;
@@ -103,6 +103,12 @@
   padding: var(--space-sm);
 }
 
+/* 展开态（侧边栏 128px）水平 padding 收窄，为菜单文字留出完整一行空间 */
+.xx-app-sidebar:not(.xx-collapsed) .xx-sidebar-content {
+  padding-left: var(--space-xs);
+  padding-right: var(--space-xs);
+}
+
 /* ── 主内容区 ─────────────────────────────────────────────── */
 .xx-app-content {
   flex: 1;
@@ -136,7 +142,7 @@
 
   /* 展开态恢复完整宽度 */
   .xx-app-sidebar:not(.xx-collapsed) {
-    width: 240px;
+    width: 128px;
   }
 
   .xx-app-sidebar:not(.xx-collapsed) .xx-sidebar-toggle {
@@ -159,7 +165,7 @@
     top: 56px; /* 移动端 Header 高度 */
     left: 0;
     bottom: 0;
-    width: 240px;
+    width: 128px;
     transform: translateX(-100%);
     transition: transform var(--transition-slow);
     box-shadow: none;
diff --git a/apps/web/src/components/layout/MainLayout.tsx b/apps/web/src/components/layout/MainLayout.tsx
index 848da13bd..55dd53928 100644
--- a/apps/web/src/components/layout/MainLayout.tsx
+++ b/apps/web/src/components/layout/MainLayout.tsx
@@ -2,7 +2,7 @@
  * MainLayout - 主布局组件（Task 1.2）
  *
  * 三栏布局：左侧侧边栏 + 顶部导航栏 + 主内容区
- * - 侧边栏：240px 固定宽度，可折叠至 64px 图标栏
+ * - 侧边栏：128px 固定宽度，可折叠至 64px 图标栏
  * - 顶部导航：复用 Header 组件（68px 固定高度）
  * - 主内容区：自适应填充剩余空间
  * - 响应式：移动端（<768px）隐藏侧边栏
diff --git a/apps/web/src/components/layout/Sidebar.css b/apps/web/src/components/layout/Sidebar.css
index 4a7e957a2..590c23af7 100644
--- a/apps/web/src/components/layout/Sidebar.css
+++ b/apps/web/src/components/layout/Sidebar.css
@@ -30,7 +30,7 @@
 
 /* 分组标题 */
 .xx-sidebar-group-title {
-  padding: var(--space-sm) var(--space-md) var(--space-xs);
+  padding: var(--space-sm) var(--space-sm) var(--space-xs);
   font-size: var(--font-size-xs);
   font-weight: var(--font-weight-semibold);
   color: var(--text-tertiary);
@@ -56,9 +56,9 @@
 .xx-sidebar-menu-item {
   display: flex;
   align-items: center;
-  gap: var(--space-sm);
-  padding: var(--space-sm) var(--space-md);
-  margin: 0 var(--space-xs);
+  gap: var(--space-xs);
+  padding: var(--space-sm) var(--space-xs);
+  margin: 0 var(--space-xxs);
   border-radius: var(--radius-sm);
   cursor: pointer;
   color: var(--text-secondary);
@@ -97,12 +97,12 @@
   align-items: center;
   justify-content: center;
   flex-shrink: 0;
-  width: 36px;
-  height: 36px;
-  border-radius: 10px;
+  width: 28px;
+  height: 28px;
+  border-radius: 8px;
   background: #f1f5f9;
   color: var(--text-secondary);
-  font-size: 18px;
+  font-size: 16px;
   line-height: 1;
   transition: 0.15s ease;
 }
@@ -119,7 +119,9 @@
 /* ── 菜单项文字 ───────────────────────────────────────────── */
 .xx-sidebar-menu-label {
   flex: 1;
+  min-width: 0;
   overflow: hidden;
+  white-space: nowrap;
   text-overflow: ellipsis;
 }
 
@@ -133,8 +135,16 @@
 /* 折叠时菜单项居中，仅图标 */
 .xx-sidebar-nav--collapsed .xx-sidebar-menu-item {
   justify-content: center;
-  padding: var(--space-sm);
-  margin: 0 var(--space-xxs);
+  padding: var(--space-xs);
+  margin: 0;
+}
+
+/* 折叠态图标恢复更大尺寸居中 */
+.xx-sidebar-nav--collapsed .xx-sidebar-menu-icon {
+  width: 32px;
+  height: 32px;
+  border-radius: 8px;
+  font-size: 16px;
 }
 
 /* 折叠时隐藏分组标题 */
diff --git a/apps/web/src/config/navigation.ts b/apps/web/src/config/navigation.ts
index 0105d5742..6279ca871 100644
--- a/apps/web/src/config/navigation.ts
+++ b/apps/web/src/config/navigation.ts
@@ -58,6 +58,12 @@ export const NAV_ITEMS: NavItem[] = [
     path: "/app/titles",
     icon: React.createElement(FileTextOutlined),
   },
+  {
+    key: "scripts",
+    label: "文案库",
+    path: "/app/scripts",
+    icon: React.createElement(EditOutlined),
+  },
   {
     key: "voices",
     label: "配音库",
@@ -173,6 +179,12 @@ export const NAV_GROUPS: NavGroup[] = [
         path: "/app/titles",
         icon: React.createElement(FileTextOutlined),
       },
+      {
+        key: "scripts",
+        label: "文案库",
+        path: "/app/scripts",
+        icon: React.createElement(EditOutlined),
+      },
       {
         key: "products",
         label: "成品库",
diff --git a/apps/web/src/pages/admin/Admin.css b/apps/web/src/pages/admin/Admin.css
index 6eb0fc565..cf549b1a2 100644
--- a/apps/web/src/pages/admin/Admin.css
+++ b/apps/web/src/pages/admin/Admin.css
@@ -11,7 +11,7 @@
 
 .admin-coming-soon-page {
   padding: 32px;
-  max-width: 1400px;
+  max-width: 1680px;
   margin: 0 auto;
 }
 
diff --git a/apps/web/src/pages/ai-avatar/AiAvatar.css b/apps/web/src/pages/ai-avatar/AiAvatar.css
index 794ecf42e..209b67fd7 100644
--- a/apps/web/src/pages/ai-avatar/AiAvatar.css
+++ b/apps/web/src/pages/ai-avatar/AiAvatar.css
@@ -1021,3 +1021,158 @@
   font-size: 36px;
   margin-bottom: 8px;
 }
+
+/* ============================================================
+   #1809 ④⑤⑥ B-roll 弹窗：选库行 + 文案句子列表 + 自动估算提示
+   ============================================================ */
+
+/* 宽弹窗：左右两栏 + 句子列表需要更大空间 */
+.aa-modal--wide {
+  max-width: 960px;
+  width: 94%;
+}
+
+.aa-broll-modal-body .aa-broll-right {
+  width: 300px;
+}
+
+/* 左侧素材库选择行 */
+.aa-broll-lib-row {
+  margin-bottom: 10px;
+}
+
+.aa-broll-lib-row .aa-select {
+  width: 100%;
+  height: 36px;
+  border: 1px solid var(--border-color, #e2e2ea);
+  border-radius: 8px;
+  padding: 0 10px;
+  font-size: 13px;
+  background: #fff;
+  color: #1a1a2e;
+  outline: none;
+}
+
+/* 无缩略图时的素材占位 */
+.aa-broll-asset-placeholder {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 18px;
+}
+
+/* 文案句子列表 */
+.aa-sentence-list {
+  max-height: 240px;
+  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  padding-right: 4px;
+}
+
+.aa-sentence-item {
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  width: 100%;
+  text-align: left;
+  border: 1px solid var(--border-color, #e2e2ea);
+  border-radius: 8px;
+  background: #fff;
+  padding: 8px 10px;
+  cursor: pointer;
+  transition: all 0.15s;
+}
+
+.aa-sentence-item:hover {
+  border-color: #c0c0d0;
+  background: #f8f8fc;
+}
+
+.aa-sentence-item.active {
+  border-color: #7c3aed;
+  background: #f3edff;
+}
+
+.aa-sentence-item__idx {
+  flex-shrink: 0;
+  width: 20px;
+  height: 20px;
+  border-radius: 50%;
+  background: #f0f0f5;
+  color: #6b6b80;
+  font-size: 11px;
+  font-weight: 600;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.aa-sentence-item.active .aa-sentence-item__idx {
+  background: #7c3aed;
+  color: #fff;
+}
+
+.aa-sentence-item__text {
+  flex: 1;
+  font-size: 12px;
+  line-height: 1.5;
+  color: #1a1a2e;
+  word-break: break-all;
+}
+
+.aa-sentence-item__time {
+  flex-shrink: 0;
+  font-size: 10px;
+  color: #8c8ca1;
+  margin-top: 2px;
+}
+
+.aa-sentence-empty {
+  font-size: 12px;
+  color: #8c8ca1;
+  background: #f8f8fc;
+  border-radius: 8px;
+  padding: 10px;
+}
+
+/* 选择/估算提示 */
+.aa-broll-hint {
+  font-size: 12px;
+  color: #059669;
+  background: #f8f8fc;
+  border-radius: 6px;
+  padding: 8px 10px;
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+/* ─ 对口型生成弹窗 Spinner ── */
+.aa-lipsync-spinner {
+  width: 48px;
+  height: 48px;
+  border: 4px solid #f0f0f5;
+  border-top-color: #6366f1;
+  border-radius: 50%;
+  animation: aa-spin 0.8s linear infinite;
+}
+
+@keyframes aa-spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.aa-btn--danger {
+  background: #ff4d4f;
+  color: #fff;
+  border: none;
+}
+
+.aa-btn--danger:hover {
+  background: #ff7875;
+}
diff --git a/apps/web/src/pages/ai-avatar/AiAvatarPage.tsx b/apps/web/src/pages/ai-avatar/AiAvatarPage.tsx
index 4544f5e04..14a43197a 100644
--- a/apps/web/src/pages/ai-avatar/AiAvatarPage.tsx
+++ b/apps/web/src/pages/ai-avatar/AiAvatarPage.tsx
@@ -3,6 +3,7 @@
  * 5列水平面板布局
  */
 import React, { useState, useCallback, useEffect, useRef } from "react"
+import { message } from "antd"
 import "./AiAvatar.css"
 import { useAiAvatar } from "./hooks/useAiAvatar"
 import { PanelVideoSelector } from "./components/PanelVideoSelector"
@@ -12,8 +13,19 @@ import PanelTitleConfig from "./components/PanelTitleConfig"
 import PanelCoverAndGenerate from "./components/PanelCoverAndGenerate"
 import { ModalAssetPicker } from "./components/ModalAssetPicker"
 import ModalBRollEditor from "./components/ModalBRollEditor"
-import { getScripts, createLipsyncJob, getLipsyncJob, submitRender } from "./api/aiAvatar"
-import { getAssetsByKind } from "@/api/assets"
+import {
+  getScripts,
+  getAssetById,
+  createLipsyncJob,
+  getLipsyncJob,
+  submitRender,
+  generateSmartCover,
+} from "./api/aiAvatar"
+import {
+  normalizeEmotion,
+  buildTitleConfigPayload,
+  buildCoverConfigPayload,
+} from "./utils/contract"
 
 /** 面板折叠状态 */
 type PanelKey = "video" | "voice" | "script" | "title" | "cover"
@@ -28,8 +40,14 @@ const AiAvatarPage: React.FC = () => {
     cover: false,
   })
 
-  /* ── 素材库弹窗 ── */
-  const [bRollAssets, setBRollAssets] = useState<import("@/api/assets").AssetItem[]>([])
+  /* ── 对口型生成弹窗 ── */
+  const [showLipsyncModal, setShowLipsyncModal] = useState(false)
+  const [lipsyncStatus, setLipsyncStatus] = useState<"generating" | "completed" | "failed">(
+    "generating",
+  )
+  const [lipsyncErrorMessage, setLipsyncErrorMessage] = useState("")
+  /* ── 智能封面加载态 ── */
+  const [smartCoverLoading, setSmartCoverLoading] = useState(false)
 
   /* ── 对口型轮询 ── */
   const lipsyncTimerRef = useRef<ReturnType<typeof setInterval> | null>(null)
@@ -40,13 +58,54 @@ const AiAvatarPage: React.FC = () => {
 
   /* ── 对口型 ── */
   const handleGenerateLipsync = useCallback(async () => {
-    if (!state.selectedVideo || !state.selectedVoice || !state.scriptText) return
+    // ② 缺项明确提示（#1809）：不再静默 return
+    const video = state.selectedVideo
+    const voice = state.selectedVoice
+    const text = state.scriptText.trim()
+    const missing: string[] = []
+    if (!video) missing.push("出镜视频")
+    if (!voice) missing.push("音色")
+    if (!text) missing.push("文案")
+    if (missing.length > 0 || !video || !voice) {
+      message.warning(`请先选择${missing.join("、")}`)
+      return
+    }
     try {
-      const job = await createLipsyncJob({
-        voice_id: state.selectedVoice.voice_id,
-        script_text: state.scriptText,
-        video_asset_id: state.selectedVideo.id,
+      // 显示生成弹窗
+      setShowLipsyncModal(true)
+      setLipsyncStatus("generating")
+      setLipsyncErrorMessage("")
+
+      // ① 先按素材 id 拿 file_url（#1809 补充：对齐后端新参数 video_url）
+      console.log("[对口型] 开始生成:", {
+        videoId: video.id,
+        voiceId: voice.voice_id,
+        voiceType: voice.type,
+        textLen: state.scriptText.length,
       })
+      const asset = await getAssetById(video.id)
+      console.log("[对口型] getAssetById 响应:", {
+        id: asset?.id,
+        file_url: asset?.file_url?.substring(0, 100),
+      })
+      const videoUrl = asset?.file_url
+      if (!videoUrl) {
+        console.error("[对口型] file_url 为空，asset:", asset)
+        setShowLipsyncModal(false)
+        message.error("获取出镜视频播放地址失败，请重新选择素材")
+        return
+      }
+      // ② 模式A TTS直生：video_url + voice_id + script_text，语速/情绪英文枚举透传（#1822）
+      const payload = {
+        voice_id: voice.voice_id,
+        script_text: state.scriptText,
+        video_url: videoUrl,
+        speed: state.speed, // 语速 0.5~2.0
+        emotion: normalizeEmotion(state.emotion), // natural/excited/calm/friendly
+      }
+      console.log("[对口型] createLipsyncJob 请求:", payload)
+      const job = await createLipsyncJob(payload)
+      console.log("[对口型] createLipsyncJob 响应:", { id: job.id, status: job.status })
       state.setLipsyncJob(job)
       // 开始轮询
       if (lipsyncTimerRef.current) clearInterval(lipsyncTimerRef.current)
@@ -54,18 +113,49 @@ const AiAvatarPage: React.FC = () => {
         try {
           const updated = await getLipsyncJob(job.id)
           state.setLipsyncJob(updated)
-          if (updated.status === "completed" || updated.status === "failed") {
+          console.log("[对口型] 轮询状态:", {
+            id: updated.id,
+            status: updated.status,
+            error: updated.error_message,
+          })
+          if (updated.status === "completed") {
             if (lipsyncTimerRef.current) clearInterval(lipsyncTimerRef.current)
+            setLipsyncStatus("completed")
+            setTimeout(() => {
+              setShowLipsyncModal(false)
+              message.success("对口型视频生成完成")
+            }, 1000)
+          } else if (updated.status === "failed") {
+            if (lipsyncTimerRef.current) clearInterval(lipsyncTimerRef.current)
+            setLipsyncStatus("failed")
+            setLipsyncErrorMessage(updated.error_message || "对口型生成失败")
           }
-        } catch {
-          // 忽略轮询错误
+        } catch (err) {
+          console.error("[对口型] 轮询错误:", err)
         }
       }, 3000)
     } catch (err) {
-      console.error("对口型任务创建失败:", err)
+      console.error("[对口型] 创建失败:", {
+        status: (err as { response?: { status?: number } })?.response?.status,
+        data: (err as { response?: { data?: unknown } })?.response?.data,
+        message: err instanceof Error ? err.message : String(err),
+      })
+      setShowLipsyncModal(false)
+      message.error(err instanceof Error ? err.message : "对口型任务提交失败，请重试")
     }
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [state.selectedVideo, state.selectedVoice, state.scriptText])
+  }, [state.selectedVideo, state.selectedVoice, state.scriptText, state.speed, state.emotion])
+
+  // 取消对口型生成
+  const handleCancelLipsync = useCallback(() => {
+    if (lipsyncTimerRef.current) {
+      clearInterval(lipsyncTimerRef.current)
+      lipsyncTimerRef.current = null
+    }
+    setShowLipsyncModal(false)
+    setLipsyncStatus("generating")
+    setLipsyncErrorMessage("")
+  }, [])
 
   // 清理轮询
   useEffect(() => {
@@ -74,28 +164,29 @@ const AiAvatarPage: React.FC = () => {
     }
   }, [])
 
-  /* ── 加载 B-roll 素材 ── */
-  useEffect(() => {
-    getAssetsByKind("video", { limit: 50 })
-      .then(setBRollAssets)
-      .catch(() => {})
-  }, [])
-
   /* ── 生成视频 ── */
   const handleGenerate = useCallback(async () => {
-    if (!state.lipsyncJob || state.lipsyncJob.status !== "completed") return
+    // ② 前置条件提示（#1809）
+    if (!state.lipsyncJob || state.lipsyncJob.status !== "completed") {
+      message.warning("请先生成对口型视频，待对口型完成后再提交渲染")
+      return
+    }
     state.setIsGenerating(true)
     try {
       await submitRender({
         lipsync_job_id: state.lipsyncJob.id,
         script_id: state.script?.id,
         b_roll_segments: state.bRollSegments as never,
-        title_config: state.titleConfig as unknown as Record<string, unknown>,
-        cover_config: state.coverConfig as unknown as Record<string, unknown>,
+        // 字段映射：build_title_drawtext_filter 真实口径 text/font_size/font_color/position/...
+        title_config: buildTitleConfigPayload(state.titleConfig),
+        // cover_config：智能封面 cover_url + 截帧 timestamp
+        cover_config: buildCoverConfigPayload(state.coverConfig, state.coverConfig.smart_cover_url),
         resolution: state.resolution,
       })
+      message.success("渲染任务已提交，可在视频管理中查看进度")
     } catch (err) {
       console.error("渲染任务提交失败:", err)
+      message.error(err instanceof Error ? err.message : "渲染任务提交失败，请重试")
     } finally {
       state.setIsGenerating(false)
     }
@@ -109,6 +200,37 @@ const AiAvatarPage: React.FC = () => {
     state.resolution,
   ])
 
+  /* ── 智能封面：调后端 MediaKit 选帧接口（#1822） ── */
+  const handleSmartCover = useCallback(async () => {
+    // 基于对口型成片抽帧，必须先完成对口型
+    const videoUrl = state.lipsyncJob?.output_video_url
+    if (state.lipsyncJob?.status !== "completed" || !videoUrl) {
+      message.warning("请先生成对口型视频，完成后再智能获取封面")
+      return
+    }
+    setSmartCoverLoading(true)
+    try {
+      const res = await generateSmartCover(videoUrl, 5)
+      if (res.cover_url) {
+        state.setCoverConfig((prev) => ({
+          ...prev,
+          mode: "auto_frame",
+          smart_cover_url: res.cover_url,
+          thumbnail_url: res.cover_url,
+        }))
+        message.success("智能封面已生成")
+      } else {
+        message.error(res.message || "智能封面生成失败，请稍后重试")
+      }
+    } catch (err) {
+      console.error("智能封面生成失败:", err)
+      message.error(err instanceof Error ? err.message : "智能封面生成失败，请重试")
+    } finally {
+      setSmartCoverLoading(false)
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [state.lipsyncJob])
+
   /* ── 配置汇总 ── */
   const summary = {
     videoName: state.selectedVideo?.name || null,
@@ -137,6 +259,7 @@ const AiAvatarPage: React.FC = () => {
               selectedVideo={state.selectedVideo}
               onSelectVideo={() => state.setShowAssetPicker(true)}
               onRemoveVideo={state.removeVideo}
+              titleConfig={state.titleConfig}
             />
           </div>
         </div>
@@ -206,6 +329,9 @@ const AiAvatarPage: React.FC = () => {
               onCoverConfigChange={(partial) =>
                 state.setCoverConfig((prev) => ({ ...prev, ...partial }))
               }
+              onSmartCover={handleSmartCover}
+              smartCoverLoading={smartCoverLoading}
+              canSmartCover={state.lipsyncJob?.status === "completed"}
               resolution={state.resolution}
               onResolutionChange={state.setResolution}
               isGenerating={state.isGenerating}
@@ -241,11 +367,80 @@ const AiAvatarPage: React.FC = () => {
           open={state.showBRollModal}
           onClose={() => state.setShowBRollModal(false)}
           existingSegments={state.bRollSegments}
-          availableAssets={bRollAssets}
+          scriptText={state.scriptText}
+          outputDuration={state.lipsyncJob?.output_duration ?? 0}
           onConfirm={state.addBRollSegment}
           onRemove={state.removeBRollSegment}
         />
       )}
+
+      {/* 对口型生成弹窗 */}
+      {showLipsyncModal && (
+        <div className="aa-modal-overlay">
+          <div className="aa-modal" onClick={(e) => e.stopPropagation()}>
+            <div className="aa-modal__header">
+              <span className="aa-modal__title">对口型生成</span>
+              <button className="aa-modal__close" onClick={handleCancelLipsync}>
+                ✕
+              </button>
+            </div>
+            <div
+              className="aa-modal__body"
+              style={{
+                display: "flex",
+                flexDirection: "column",
+                alignItems: "center",
+                padding: "40px 20px",
+              }}
+            >
+              {lipsyncStatus === "generating" && (
+                <>
+                  <div className="aa-lipsync-spinner" />
+                  <div style={{ marginTop: 20, fontSize: 15, color: "#1a1a2e" }}>
+                    对口型视频生成中…
+                  </div>
+                  <div style={{ marginTop: 8, fontSize: 13, color: "#8c8ca1" }}>
+                    请勿关闭页面，完成后将自动提示
+                  </div>
+                </>
+              )}
+              {lipsyncStatus === "completed" && (
+                <>
+                  <div style={{ fontSize: 48 }}>✅</div>
+                  <div style={{ marginTop: 16, fontSize: 15, color: "#1a1a2e" }}>
+                    对口型视频生成完成
+                  </div>
+                </>
+              )}
+              {lipsyncStatus === "failed" && (
+                <>
+                  <div style={{ fontSize: 48 }}>❌</div>
+                  <div style={{ marginTop: 16, fontSize: 15, color: "#1a1a2e" }}>
+                    对口型生成失败
+                  </div>
+                  {lipsyncErrorMessage && (
+                    <div style={{ marginTop: 8, fontSize: 13, color: "#ff4d4f" }}>
+                      {lipsyncErrorMessage}
+                    </div>
+                  )}
+                </>
+              )}
+            </div>
+            <div className="aa-modal__footer">
+              {lipsyncStatus === "generating" && (
+                <button className="aa-btn aa-btn--danger" onClick={handleCancelLipsync}>
+                  取消生成
+                </button>
+              )}
+              {lipsyncStatus !== "generating" && (
+                <button className="aa-btn" onClick={handleCancelLipsync}>
+                  关闭
+                </button>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   )
 }
@@ -264,8 +459,8 @@ const ScriptSelectModalLazy: React.FC<{
     if (!open) return
     setLoading(true)
     getScripts()
-      .then(setScripts)
-      .catch(() => {})
+      .then((items) => setScripts(Array.isArray(items) ? items : []))
+      .catch(() => setScripts([]))
       .finally(() => setLoading(false))
   }, [open])
 
diff --git a/apps/web/src/pages/ai-avatar/api/aiAvatar.ts b/apps/web/src/pages/ai-avatar/api/aiAvatar.ts
index 24acab0ed..87d544150 100644
--- a/apps/web/src/pages/ai-avatar/api/aiAvatar.ts
+++ b/apps/web/src/pages/ai-avatar/api/aiAvatar.ts
@@ -1,13 +1,17 @@
 /**
- * AI数字人 — API 封装
+ * AI数字人 — API 封装（#1822 契约对齐）
  */
 import apiClient from "@/api/client"
 import type { Script, LipsyncJob, RenderJob, BRollSegment } from "../types"
 
 /* ── 文案库 ── */
 export const getScripts = async (): Promise<Script[]> => {
-  const response = await apiClient.get<Script[]>("/scripts")
-  return response.data
+  const response = await apiClient.get<{ items?: Script[] } | Script[]>("/scripts")
+  // 后端列表返回 { items, total } 分页对象，做兼容解包 + 数组防御（#1809 白屏修复）
+  const data = response.data as unknown
+  if (Array.isArray(data)) return data
+  const items = (data as { items?: Script[] })?.items
+  return Array.isArray(items) ? items : []
 }
 
 export const getScriptById = async (id: string): Promise<Script> => {
@@ -24,11 +28,26 @@ export const deleteScript = async (id: string): Promise<void> => {
   await apiClient.delete(`/scripts/${id}`)
 }
 
-/* ── 对口型 ── */
+/* ── 素材单查（拿到 file_url 作为对口型的 video_url） ── */
+export const getAssetById = async (id: string): Promise<{ file_url?: string; id: string }> => {
+  const response = await apiClient.get<{ file_url?: string; id: string }>(`/assets/${id}`)
+  return response.data
+}
+
+/* ── 对口型（模式A：TTS 直生，后端内部合成音频；不要先调 TTS 拿 audio_url） ── */
 export const createLipsyncJob = async (data: {
+  /** 人物视频 URL（MP4）；由素材 id 经 getAssetById 拿 file_url，禁止传 video_asset_id */
+  video_url: string
+  /** 音色 ID（预置音色 或 克隆音色 profile UUID，后端会解析） */
   voice_id: string
+  /** 要合成的文案（手动输入或文案库内容） */
   script_text: string
-  video_asset_id: string
+  /** 语速 0.5~2.0，默认 1.0 */
+  speed?: number
+  /** 情绪英文枚举：natural/excited/calm/friendly */
+  emotion?: string
+  enable_video_loop?: boolean
+  project_id?: string
 }): Promise<LipsyncJob> => {
   const response = await apiClient.post<LipsyncJob>("/lipsync/jobs", data)
   return response.data
@@ -39,6 +58,18 @@ export const getLipsyncJob = async (id: string): Promise<LipsyncJob> => {
   return response.data
 }
 
+/* ── 智能封面（MediaKit 抽帧 + 质量评分选最佳帧，独立于渲染任务） ── */
+export const generateSmartCover = async (
+  video_url: string,
+  max_frames = 5,
+): Promise<{ cover_url: string; status: string; message: string }> => {
+  const response = await apiClient.post<{ cover_url: string; status: string; message: string }>(
+    "/ai-avatar/render/smart-cover",
+    { video_url, max_frames },
+  )
+  return response.data
+}
+
 /* ── 渲染 ── */
 export const submitRender = async (data: {
   lipsync_job_id: string
diff --git a/apps/web/src/pages/ai-avatar/components/ModalAssetPicker.tsx b/apps/web/src/pages/ai-avatar/components/ModalAssetPicker.tsx
index 9d1ae4c9d..676fe147d 100644
--- a/apps/web/src/pages/ai-avatar/components/ModalAssetPicker.tsx
+++ b/apps/web/src/pages/ai-avatar/components/ModalAssetPicker.tsx
@@ -1,13 +1,10 @@
 /**
- * AI数字人 — 素材库弹窗
- * 搜索框 + 类型筛选（全部/视频/图片）+ 4 列竖屏 9:16 缩略图网格 + 底部确认选择
+ * AI数字人 — 出镜视频选择弹窗（#1809 ③）
+ * 交互对齐智能剪辑 Step2：先选素材库（video 库）→ 再选该库内视频。
+ * 搜索框 + 素材库下拉 + 竖屏 9:16 视频缩略图网格 + 底部确认选择。
  */
 import { useEffect, useState } from "react"
-import { ensureDefaultLibrary, getAssetsByKind, type AssetItem } from "@/api/assets"
-import { getOrCreateDefaultProject } from "@/api/projects"
-
-/** 素材类型筛选 */
-type AssetKindFilter = "all" | "video" | "image"
+import { getAssets, getAssetLibraries, type AssetItem, type AssetLibraryItem } from "@/api/assets"
 
 export interface ModalAssetPickerProps {
   open: boolean
@@ -17,86 +14,76 @@ export interface ModalAssetPickerProps {
   selectedId?: string
 }
 
-const KIND_OPTIONS: { value: AssetKindFilter; label: string }[] = [
-  { value: "all", label: "全部" },
-  { value: "video", label: "视频" },
-  { value: "image", label: "图片" },
-]
-
 export function ModalAssetPicker({ open, onClose, onSelect, selectedId }: ModalAssetPickerProps) {
   const [keyword, setKeyword] = useState("")
-  const [kindFilter, setKindFilter] = useState<AssetKindFilter>("video")
+  const [libraries, setLibraries] = useState<AssetLibraryItem[]>([])
+  const [libraryId, setLibraryId] = useState<string>("")
   const [assets, setAssets] = useState<AssetItem[]>([])
   const [pickedId, setPickedId] = useState<string | null>(null)
-  const [loading, setLoading] = useState(false)
+  const [loadingLibs, setLoadingLibs] = useState(false)
+  const [loadingAssets, setLoadingAssets] = useState(false)
   const [error, setError] = useState("")
-  const [ready, setReady] = useState(false)
 
-  /* 弹窗打开：重置筛选 / 关键字，并定位高亮到已选素材 */
+  /* 弹窗打开：重置状态 */
   useEffect(() => {
     if (!open) return
     setKeyword("")
-    setKindFilter("video")
+    setLibraries([])
+    setLibraryId("")
     setAssets([])
     setError("")
     setPickedId(selectedId ?? null)
-    setReady(false)
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [open])
 
-  /* 确保默认素材库存在（视频 + 图片，供类型筛选），仅在弹窗打开时执行一次 */
+  /* 第一步：加载视频素材库列表（仅 kind=video，对齐智能剪辑 #1777） */
   useEffect(() => {
     if (!open) return
     let cancelled = false
-    const ensureLibraries = async () => {
-      try {
-        const project = await getOrCreateDefaultProject()
-        await Promise.all([
-          ensureDefaultLibrary({ project_id: project.id, kind: "video" }),
-          ensureDefaultLibrary({ project_id: project.id, kind: "image" }),
-        ])
-        if (!cancelled) setReady(true)
-      } catch {
-        if (!cancelled) setError("素材库初始化失败，请重试")
-      }
-    }
-    ensureLibraries()
+    setLoadingLibs(true)
+    getAssetLibraries("video")
+      .then((libs) => {
+        if (cancelled) return
+        const list = Array.isArray(libs) ? libs : []
+        setLibraries(list)
+        // 默认选中第一个视频库
+        if (list.length > 0) setLibraryId((prev) => prev || list[0].id)
+      })
+      .catch(() => {
+        if (!cancelled) setError("素材库加载失败，请重试")
+      })
+      .finally(() => {
+        if (!cancelled) setLoadingLibs(false)
+      })
     return () => {
       cancelled = true
     }
   }, [open])
 
-  /* 拉取素材：类型 / 关键字变化时防抖重新请求 */
+  /* 第二步：选中库后拉取该库视频素材（关键字防抖） */
   useEffect(() => {
-    if (!open || !ready) return
+    if (!open || !libraryId) return
     let cancelled = false
-    setLoading(true)
+    setLoadingAssets(true)
     const load = async () => {
       try {
-        const kw = keyword.trim() || undefined
-        let items: AssetItem[] = []
-        if (kindFilter === "all") {
-          const [videos, images] = await Promise.all([
-            getAssetsByKind("video", { keyword: kw }),
-            getAssetsByKind("image", { keyword: kw }),
-          ])
-          const seen = new Set<string>()
-          items = [...videos, ...images].filter((a) => {
-            if (seen.has(a.id)) return false
-            seen.add(a.id)
-            return true
-          })
-        } else {
-          items = await getAssetsByKind(kindFilter, { keyword: kw })
-        }
-        if (!cancelled) setAssets(items)
+        // getAssets 返回 { items, total }；拉满一页（数字人口播视频库通常不大）
+        const { items } = await getAssets(libraryId, { page_size: 100 })
+        if (cancelled) return
+        let list = Array.isArray(items) ? items : []
+        // 仅保留视频素材（出镜视频要求）
+        list = list.filter((a) => a.mime_type?.includes("video"))
+        const kw = keyword.trim()
+        if (kw) list = list.filter((a) => a.name?.includes(kw))
+        setAssets(list)
+        setError("")
       } catch {
         if (!cancelled) {
           setError("素材加载失败，请重试")
           setAssets([])
         }
       } finally {
-        if (!cancelled) setLoading(false)
+        if (!cancelled) setLoadingAssets(false)
       }
     }
     const timer = window.setTimeout(load, 300)
@@ -104,7 +91,7 @@ export function ModalAssetPicker({ open, onClose, onSelect, selectedId }: ModalA
       cancelled = true
       window.clearTimeout(timer)
     }
-  }, [open, ready, kindFilter, keyword])
+  }, [open, libraryId, keyword])
 
   if (!open) return null
 
@@ -120,15 +107,33 @@ export function ModalAssetPicker({ open, onClose, onSelect, selectedId }: ModalA
       <div className="aa-modal" onClick={(e) => e.stopPropagation()}>
         {/* 头部 */}
         <div className="aa-modal__header">
-          <span className="aa-modal__title">选择素材</span>
+          <span className="aa-modal__title">选择出镜视频</span>
           <button type="button" className="aa-modal__close" onClick={onClose} aria-label="关闭">
             ×
           </button>
         </div>
 
-        {/* 主体：搜索 + 筛选 + 网格 */}
+        {/* 主体：素材库选择 + 搜索 + 网格 */}
         <div className="aa-modal__body">
+          {/* 第一步：选素材库 */}
           <div className="aa-asset-search">
+            <select
+              className="aa-select"
+              style={{ width: 160, flex: "0 0 auto" }}
+              value={libraryId}
+              onChange={(e) => setLibraryId(e.target.value)}
+              disabled={loadingLibs || libraries.length === 0}
+            >
+              {libraries.length === 0 ? (
+                <option value="">{loadingLibs ? "素材库加载中…" : "暂无视频素材库"}</option>
+              ) : (
+                libraries.map((lib) => (
+                  <option key={lib.id} value={lib.id}>
+                    📁 {lib.name}
+                  </option>
+                ))
+              )}
+            </select>
             <input
               className="aa-input"
               type="text"
@@ -136,21 +141,14 @@ export function ModalAssetPicker({ open, onClose, onSelect, selectedId }: ModalA
               value={keyword}
               onChange={(e) => setKeyword(e.target.value)}
             />
-            <select
-              className="aa-select"
-              style={{ width: 110, flex: "0 0 auto" }}
-              value={kindFilter}
-              onChange={(e) => setKindFilter(e.target.value as AssetKindFilter)}
-            >
-              {KIND_OPTIONS.map((opt) => (
-                <option key={opt.value} value={opt.value}>
-                  {opt.label}
-                </option>
-              ))}
-            </select>
           </div>
 
-          {loading ? (
+          {libraries.length === 0 && !loadingLibs ? (
+            <div className="aa-empty">
+              <div className="aa-empty__icon">📁</div>
+              暂无视频素材库，请先在「素材库」中创建视频库并上传视频
+            </div>
+          ) : loadingAssets ? (
             <div className="aa-empty">
               <div className="aa-empty__icon">⏳</div>
               素材加载中…
@@ -162,8 +160,8 @@ export function ModalAssetPicker({ open, onClose, onSelect, selectedId }: ModalA
             </div>
           ) : assets.length === 0 ? (
             <div className="aa-empty">
-              <div className="aa-empty__icon">📁</div>
-              暂无素材
+              <div className="aa-empty__icon">🎬</div>
+              该素材库暂无视频素材
             </div>
           ) : (
             <div className="aa-asset-grid">
diff --git a/apps/web/src/pages/ai-avatar/components/ModalBRollEditor.tsx b/apps/web/src/pages/ai-avatar/components/ModalBRollEditor.tsx
index eba481d13..613bed94f 100644
--- a/apps/web/src/pages/ai-avatar/components/ModalBRollEditor.tsx
+++ b/apps/web/src/pages/ai-avatar/components/ModalBRollEditor.tsx
@@ -1,23 +1,27 @@
 /**
- * AI数字人 — B-roll 画面插入编辑器弹窗
+ * AI数字人 — B-roll 画面插入编辑器弹窗（#1809 ④⑤⑥）
  *
  * 布局：
- * - 左侧：可用素材网格（已被其他 segment 使用的素材标灰 + "已选择" 遮罩，
- *   pointer-events: none 防止重复选择同一段素材）
- * - 右侧：插入设置（文案段落索引 / 全屏 or 画中画 / 画中画四角位置 + 大小 / 起止时间）
- * - 底部：已配置的画面插入列表（可删除）+ 上传新素材入口
+ * - 左侧：先选素材库（video 库）→ 再选该库视频素材（已被其他 segment 使用的素材
+ *   标灰 + "已选择" 遮罩，pointer-events:none 防重复选择）
+ * - 右侧：文案句子列表（点选对应段落，替代原数字索引框）/ 全屏 or 画中画 / 四角位置+大小
+ *   （开始/结束时间已删除，按句子字数占比 × 口播总时长自动估算）
+ * - 底部：已配置的画面插入列表（可删除）
  */
-import React, { useMemo, useState } from "react"
-import type { AssetItem } from "@/api/assets"
+import React, { useEffect, useMemo, useState } from "react"
+import { getAssets, getAssetLibraries, type AssetItem, type AssetLibraryItem } from "@/api/assets"
 import type { BRollSegment, BRollInsertMode, PipPosition } from "../types"
+import { splitScriptIntoSentences, type ScriptSentence } from "../utils/sentences"
 
 interface ModalBRollEditorProps {
   open: boolean
   onClose: () => void
   /** 当前已有的 B-roll segments（用于标灰已选素材） */
   existingSegments: BRollSegment[]
-  /** 所有可用素材 */
-  availableAssets: AssetItem[]
+  /** 当前文案全文（用于分句） */
+  scriptText: string
+  /** 对口型成片总时长（秒），用于时间自动估算 */
+  outputDuration: number
   onConfirm: (segment: BRollSegment) => void
   onRemove: (id: string) => void
 }
@@ -38,18 +42,31 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
   open,
   onClose,
   existingSegments,
-  availableAssets,
+  scriptText,
+  outputDuration,
   onConfirm,
   onRemove,
 }) => {
+  /* ── 素材库（④ 先选库再选素材） ── */
+  const [libraries, setLibraries] = useState<AssetLibraryItem[]>([])
+  const [libraryId, setLibraryId] = useState<string>("")
+  const [availableAssets, setAvailableAssets] = useState<AssetItem[]>([])
+  const [loadingLibs, setLoadingLibs] = useState(false)
+  const [loadingAssets, setLoadingAssets] = useState(false)
+  const [assetError, setAssetError] = useState("")
+
   /* ── 右侧设置本地状态 ── */
   const [selectedAsset, setSelectedAsset] = useState<AssetItem | null>(null)
-  const [scriptSegmentIndex, setScriptSegmentIndex] = useState(0)
+  const [selectedSentence, setSelectedSentence] = useState<ScriptSentence | null>(null)
   const [mode, setMode] = useState<BRollInsertMode>("fullscreen")
   const [pipPosition, setPipPosition] = useState<PipPosition>("top-right")
   const [pipScale, setPipScale] = useState(0.3)
-  const [startTime, setStartTime] = useState(0)
-  const [endTime, setEndTime] = useState(3)
+
+  /** 文案分句（⑤） */
+  const sentences = useMemo(
+    () => splitScriptIntoSentences(scriptText, outputDuration),
+    [scriptText, outputDuration],
+  )
 
   /** 已被现有 segments 占用的素材 id 集合（标灰、禁止重复选择） */
   const usedAssetIds = useMemo(
@@ -57,25 +74,83 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
     [existingSegments],
   )
 
+  /* 弹窗打开：重置选择 + 加载视频库列表 */
+  useEffect(() => {
+    if (!open) return
+    setSelectedAsset(null)
+    setSelectedSentence(null)
+    setMode("fullscreen")
+    setPipPosition("top-right")
+    setPipScale(0.3)
+    setLibraries([])
+    setLibraryId("")
+    setAvailableAssets([])
+    setAssetError("")
+    setLoadingLibs(true)
+    let cancelled = false
+    getAssetLibraries("video")
+      .then((libs) => {
+        if (cancelled) return
+        const list = Array.isArray(libs) ? libs : []
+        setLibraries(list)
+        if (list.length > 0) setLibraryId(list[0].id)
+      })
+      .catch(() => {
+        if (!cancelled) setAssetError("素材库加载失败，请重试")
+      })
+      .finally(() => {
+        if (!cancelled) setLoadingLibs(false)
+      })
+    return () => {
+      cancelled = true
+    }
+  }, [open])
+
+  /* 选中库后拉取该库视频素材 */
+  useEffect(() => {
+    if (!open || !libraryId) return
+    let cancelled = false
+    setLoadingAssets(true)
+    getAssets(libraryId, { page_size: 100 })
+      .then(({ items }) => {
+        if (cancelled) return
+        const list = (Array.isArray(items) ? items : []).filter((a) =>
+          a.mime_type?.includes("video"),
+        )
+        setAvailableAssets(list)
+        setAssetError("")
+      })
+      .catch(() => {
+        if (!cancelled) {
+          setAssetError("素材加载失败，请重试")
+          setAvailableAssets([])
+        }
+      })
+      .finally(() => {
+        if (!cancelled) setLoadingAssets(false)
+      })
+    return () => {
+      cancelled = true
+    }
+  }, [open, libraryId])
+
   if (!open) return null
 
   /** 选择素材（已选素材因 pointer-events:none 不会触发） */
   const handleSelectAsset = (asset: AssetItem) => {
     if (usedAssetIds.has(asset.id)) return
     setSelectedAsset(asset)
-    // 默认起止时间：素材时长的前 3 秒（或整段）
-    const dur = asset.duration ?? 3
-    setEndTime(Math.min(3, dur))
   }
 
-  /** 确认添加一段 B-roll */
+  /** 确认添加一段 B-roll（⑥ 时间取所选句子的估算起止） */
   const handleConfirm = () => {
-    if (!selectedAsset) return
-    if (endTime <= startTime) return
+    if (!selectedAsset || !selectedSentence) return
+    const startTime = selectedSentence.startTime
+    const endTime = Math.max(selectedSentence.endTime, startTime + 0.5)
     const segment: BRollSegment = {
       id: crypto.randomUUID(),
       asset: selectedAsset,
-      script_segment_index: scriptSegmentIndex,
+      script_segment_index: selectedSentence.index,
       start_time: startTime,
       end_time: endTime,
       mode,
@@ -83,15 +158,16 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
       pip_scale: mode === "pip" ? pipScale : 0.3,
     }
     onConfirm(segment)
-    // 重置选择，保留设置便于连续添加
+    // 重置素材/句子选择，保留模式设置便于连续添加
     setSelectedAsset(null)
+    setSelectedSentence(null)
   }
 
-  const canConfirm = selectedAsset !== null && endTime > startTime
+  const canConfirm = selectedAsset !== null && selectedSentence !== null
 
   return (
     <div className="aa-modal-overlay" onClick={onClose}>
-      <div className="aa-modal" onClick={(e) => e.stopPropagation()}>
+      <div className="aa-modal aa-modal--wide" onClick={(e) => e.stopPropagation()}>
         {/* 头部 */}
         <div className="aa-modal__header">
           <span className="aa-modal__title">🎞️ 画面插入（B-roll）</span>
@@ -103,22 +179,25 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
         {/* 主体：左素材 + 右设置 */}
         <div className="aa-modal__body">
           <div className="aa-broll-modal-body">
-            {/* 左侧：素材网格 */}
+            {/* 左侧：选库 + 素材网格 */}
             <div className="aa-broll-left">
-              <div
-                style={{
-                  display: "flex",
-                  alignItems: "center",
-                  justifyContent: "space-between",
-                  marginBottom: 10,
-                }}
-              >
-                <span style={{ fontSize: 13, fontWeight: 600, color: "#1a1a2e" }}>
-                  选择素材（{availableAssets.length}）
-                </span>
-                <button type="button" className="aa-btn aa-btn--ghost aa-btn-sm">
-                  ⬆️ 上传新素材
-                </button>
+              <div className="aa-broll-lib-row">
+                <select
+                  className="aa-select"
+                  value={libraryId}
+                  onChange={(e) => setLibraryId(e.target.value)}
+                  disabled={loadingLibs || libraries.length === 0}
+                >
+                  {libraries.length === 0 ? (
+                    <option value="">{loadingLibs ? "素材库加载中…" : "暂无视频素材库"}</option>
+                  ) : (
+                    libraries.map((lib) => (
+                      <option key={lib.id} value={lib.id}>
+                        📁 {lib.name}
+                      </option>
+                    ))
+                  )}
+                </select>
               </div>
               <div className="aa-broll-asset-grid">
                 {availableAssets.map((asset) => {
@@ -141,45 +220,60 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
                       {asset.thumbnail_url ? (
                         <img src={asset.thumbnail_url} alt={asset.name} />
                       ) : (
-                        <div
-                          style={{
-                            width: "100%",
-                            height: "100%",
-                            display: "flex",
-                            alignItems: "center",
-                            justifyContent: "center",
-                            fontSize: 18,
-                          }}
-                        >
-                          🎬
-                        </div>
+                        <div className="aa-broll-asset-placeholder">🎬</div>
                       )}
                       <span className="aa-asset-card__name">{asset.name}</span>
                     </div>
                   )
                 })}
-                {availableAssets.length === 0 && (
+                {loadingAssets ? (
+                  <div className="aa-empty" style={{ gridColumn: "1 / -1" }}>
+                    <div className="aa-empty__icon">⏳</div>
+                    素材加载中…
+                  </div>
+                ) : availableAssets.length === 0 ? (
                   <div className="aa-empty" style={{ gridColumn: "1 / -1" }}>
                     <div className="aa-empty__icon">🎬</div>
-                    暂无可用素材，请先上传视频素材
+                    {assetError || "该素材库暂无视频素材"}
                   </div>
-                )}
+                ) : null}
               </div>
             </div>
 
             {/* 右侧：插入设置 */}
             <div className="aa-broll-right">
               <div className="aa-broll-settings">
-                {/* 文案段落索引 */}
+                {/* ⑤ 文案句子列表（替代段落索引数字框） */}
                 <div className="aa-form-field">
-                  <label className="aa-label">文案段落索引</label>
-                  <input
-                    className="aa-input"
-                    type="number"
-                    min={0}
-                    value={scriptSegmentIndex}
-                    onChange={(e) => setScriptSegmentIndex(Math.max(0, Number(e.target.value)))}
-                  />
+                  <label className="aa-label">对应文案句子（点选）</label>
+                  {sentences.length === 0 ? (
+                    <div className="aa-sentence-empty">
+                      请先在「文案 & 对口型」面板填写或选择文案
+                    </div>
+                  ) : (
+                    <div className="aa-sentence-list">
+                      {sentences.map((sent) => {
+                        const active = selectedSentence?.index === sent.index
+                        return (
+                          <button
+                            key={sent.index}
+                            type="button"
+                            className={`aa-sentence-item${active ? " active" : ""}`}
+                            onClick={() => setSelectedSentence(sent)}
+                            title={sent.text}
+                          >
+                            <span className="aa-sentence-item__idx">{sent.index + 1}</span>
+                            <span className="aa-sentence-item__text">{sent.text}</span>
+                            {outputDuration > 0 && (
+                              <span className="aa-sentence-item__time">
+                                {sent.startTime.toFixed(1)}-{sent.endTime.toFixed(1)}s
+                              </span>
+                            )}
+                          </button>
+                        )
+                      })}
+                    </div>
+                  )}
                 </div>
 
                 {/* 插入模式 */}
@@ -224,10 +318,7 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
                       </div>
                     </div>
                     <div className="aa-form-field">
-                      <div
-                        className="aa-field-label-row"
-                        style={{ display: "flex", justifyContent: "space-between" }}
-                      >
+                      <div className="aa-field-label-row">
                         <label className="aa-label">画中画大小</label>
                         <span style={{ fontSize: 12, color: "#8c8ca1" }}>
                           {Math.round(pipScale * 100)}%
@@ -246,41 +337,26 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
                   </>
                 )}
 
-                {/* 起止时间 */}
-                <div className="aa-form-field">
-                  <label className="aa-label">开始时间（秒）</label>
-                  <input
-                    className="aa-input"
-                    type="number"
-                    min={0}
-                    step={0.1}
-                    value={startTime}
-                    onChange={(e) => setStartTime(Math.max(0, Number(e.target.value)))}
-                  />
-                </div>
-                <div className="aa-form-field">
-                  <label className="aa-label">结束时间（秒）</label>
-                  <input
-                    className="aa-input"
-                    type="number"
-                    min={0}
-                    step={0.1}
-                    value={endTime}
-                    onChange={(e) => setEndTime(Math.max(0, Number(e.target.value)))}
-                  />
-                </div>
-
-                {/* 当前选中素材提示 */}
-                <div
-                  style={{
-                    fontSize: 12,
-                    color: selectedAsset ? "#059669" : "#8c8ca1",
-                    background: "#f8f8fc",
-                    borderRadius: 6,
-                    padding: "6px 8px",
-                  }}
-                >
-                  {selectedAsset ? `已选素材：${selectedAsset.name}` : "请从左侧选择一段素材"}
+                {/* 当前选择提示（⑥ 自动估算时间在这里展示） */}
+                <div className="aa-broll-hint">
+                  {selectedAsset && selectedSentence ? (
+                    <>
+                      <div>已选素材：{selectedAsset.name}</div>
+                      <div>
+                        对应第 {selectedSentence.index + 1} 句 · 时间段{" "}
+                        {selectedSentence.startTime.toFixed(1)}s -{" "}
+                        {Math.max(
+                          selectedSentence.endTime,
+                          selectedSentence.startTime + 0.5,
+                        ).toFixed(1)}
+                        s （按字数自动估算）
+                      </div>
+                    </>
+                  ) : (
+                    <div style={{ color: "#8c8ca1" }}>
+                      {!selectedAsset ? "请从左侧选择一段素材" : "请在上方点选对应的文案句子"}
+                    </div>
+                  )}
                 </div>
               </div>
             </div>
@@ -304,7 +380,7 @@ const ModalBRollEditor: React.FC<ModalBRollEditorProps> = ({
                   <div className="aa-broll-item__info">
                     <div style={{ fontWeight: 500, color: "#1a1a2e" }}>{seg.asset.name}</div>
                     <div style={{ color: "#8c8ca1", fontSize: 11 }}>
-                      段落 {seg.script_segment_index} · {MODE_LABEL[seg.mode]}
+                      第 {seg.script_segment_index + 1} 句 · {MODE_LABEL[seg.mode]}
                       {seg.mode === "pip" ? ` · ${seg.pip_position}` : ""} ·{" "}
                       {seg.start_time.toFixed(1)}s - {seg.end_time.toFixed(1)}s
                     </div>
diff --git a/apps/web/src/pages/ai-avatar/components/PanelCoverAndGenerate.tsx b/apps/web/src/pages/ai-avatar/components/PanelCoverAndGenerate.tsx
index e5c7d00ea..ea9961802 100644
--- a/apps/web/src/pages/ai-avatar/components/PanelCoverAndGenerate.tsx
+++ b/apps/web/src/pages/ai-avatar/components/PanelCoverAndGenerate.tsx
@@ -17,6 +17,10 @@ interface PanelCoverAndGenerateProps {
   onResolutionChange: (r: string) => void
   isGenerating: boolean
   onGenerate: () => void
+  /** 智能获取封面（MediaKit 选帧） */
+  onSmartCover: () => void
+  smartCoverLoading: boolean
+  canSmartCover: boolean
   /** 配置汇总信息 */
   summary: {
     videoName: string | null
@@ -50,6 +54,9 @@ const PanelCoverAndGenerate: React.FC<PanelCoverAndGenerateProps> = ({
   onResolutionChange,
   isGenerating,
   onGenerate,
+  onSmartCover,
+  smartCoverLoading,
+  canSmartCover,
   summary,
 }) => {
   const uploadInputRef = useRef<HTMLInputElement>(null)
@@ -69,9 +76,10 @@ const PanelCoverAndGenerate: React.FC<PanelCoverAndGenerateProps> = ({
     e.target.value = ""
   }
 
-  /** 从视频截取（使用配置的帧时间，默认首帧） */
-  const handleCaptureFromVideo = () => {
+  /** 智能获取封面（调后端 MediaKit 抽帧评分选最佳帧，#1822） */
+  const handleSmartCover = () => {
     onCoverConfigChange({ mode: "auto_frame" })
+    onSmartCover()
   }
 
   const lipsync = summary.lipsyncStatus ? LIPSYNC_STATUS_LABEL[summary.lipsyncStatus] : null
@@ -93,9 +101,11 @@ const PanelCoverAndGenerate: React.FC<PanelCoverAndGenerateProps> = ({
         <button
           type="button"
           className={`aa-btn aa-btn--ghost${coverConfig.mode === "auto_frame" ? " active" : ""}`}
-          onClick={handleCaptureFromVideo}
+          onClick={handleSmartCover}
+          disabled={smartCoverLoading || !canSmartCover}
+          title={canSmartCover ? "基于对口型成片智能选帧" : "请先完成对口型生成"}
         >
-          🎬 从视频截取
+          {smartCoverLoading ? "⏳ 智能选帧中…" : "🎬 智能获取封面"}
         </button>
         <button
           type="button"
diff --git a/apps/web/src/pages/ai-avatar/components/PanelTitleConfig.tsx b/apps/web/src/pages/ai-avatar/components/PanelTitleConfig.tsx
index 4b00e315d..2cea58f06 100644
--- a/apps/web/src/pages/ai-avatar/components/PanelTitleConfig.tsx
+++ b/apps/web/src/pages/ai-avatar/components/PanelTitleConfig.tsx
@@ -7,16 +7,21 @@
  * - AiAvatarTitleConfig ↔ TitleSettings 的双向适配
  * - 自动生成字幕开关
  */
-import React, { useMemo, useState } from "react"
+import React, { useMemo, useState, useEffect } from "react"
+import { Input } from "antd"
 import TitleStylePanel from "@/pages/generate/components/title/TitleStylePanel"
+import TitleLibraryAutoComplete from "@/pages/generate/components/title/TitleLibraryAutoComplete"
+import type { TitleOption } from "@/pages/generate/components/title/TitleLibraryAutoComplete"
 import type { TitleSettings } from "@/pages/generate/types"
 import {
   POSITION_OPTIONS,
   FONT_OPTIONS,
   TITLE_PRESETS,
-  getFontFamily,
 } from "@/pages/generate/constants"
 import type { AiAvatarTitleConfig } from "../types"
+import { getTitles } from "@/api/titles"
+
+const { TextArea } = Input
 
 interface PanelTitleConfigProps {
   titleConfig: AiAvatarTitleConfig
@@ -27,6 +32,14 @@ const PanelTitleConfig: React.FC<PanelTitleConfigProps> = ({ titleConfig, onUpda
   /** TitleStylePanel 内部高亮的预设 key（面板本地状态） */
   const [activePreset, setActivePreset] = useState<string | null>(null)
 
+  /** 标题库选项（复用智能剪辑的标题库） */
+  const [titleOptions, setTitleOptions] = useState<TitleOption[]>([])
+  useEffect(() => {
+    getTitles()
+      .then((items) => setTitleOptions(items.map((t) => ({ label: t.content, value: t.content }))))
+      .catch(() => setTitleOptions([]))
+  }, [])
+
   /** AiAvatarTitleConfig → TitleSettings（补齐 aiAutoSelect / 自由坐标字段） */
   const titleSettings: TitleSettings = useMemo(
     () => ({
@@ -62,37 +75,30 @@ const PanelTitleConfig: React.FC<PanelTitleConfigProps> = ({ titleConfig, onUpda
 
   return (
     <div className="aa-title-config">
-      {/* 主标题输入 */}
+      {/* 主标题输入 — TextArea 多行 + 标题库选择 */}
       <div className="aa-form-field">
         <label className="aa-label">主标题</label>
-        <input
-          className="aa-input aa-title-input"
-          type="text"
-          placeholder="输入视频标题（留空则不显示标题）"
+        <TextArea
+          className="aa-title-input"
+          placeholder="输入视频标题（支持 / 分行）"
           value={titleConfig.title}
-          maxLength={30}
+          autoSize={{ minRows: 2, maxRows: 4 }}
+          maxLength={200}
           onChange={(e) => onUpdate({ title: e.target.value })}
+          style={{ fontSize: 15 }}
         />
-        {titleConfig.title && (
-          <div
-            style={{
-              fontSize: 13,
-              padding: "6px 8px",
-              background: "#f8f8fc",
-              borderRadius: 6,
-              fontFamily: getFontFamily(titleConfig.font),
-              fontWeight: titleConfig.bold ? 700 : 400,
-              fontStyle: titleConfig.italic ? "italic" : "normal",
-              color: titleConfig.color,
-              textShadow: titleConfig.shadow ? "1px 1px 3px rgba(0,0,0,0.6)" : undefined,
-              overflow: "hidden",
-              textOverflow: "ellipsis",
-              whiteSpace: "nowrap",
-            }}
-          >
-            {titleConfig.title}
-          </div>
-        )}
+        <div style={{ marginTop: 8, display: "flex", alignItems: "center", gap: 8 }}>
+          <span style={{ fontSize: 12, color: "#8c8ca1", whiteSpace: "nowrap" }}>📚 标题库</span>
+          <TitleLibraryAutoComplete
+            key={titleConfig.title}
+            placeholder="选择标题填入上方"
+            value=""
+            onChange={(val) => { if (val) onUpdate({ title: val }) }}
+            options={titleOptions}
+            maxLength={200}
+            style={{ flex: 1 }}
+          />
+        </div>
       </div>
 
       {/* 标题样式：直接复用智能剪辑 TitleStylePanel（位置/字体/字号/样式/预设） */}
diff --git a/apps/web/src/pages/ai-avatar/components/PanelVideoSelector.tsx b/apps/web/src/pages/ai-avatar/components/PanelVideoSelector.tsx
index 76933a0fe..b09baf3f0 100644
--- a/apps/web/src/pages/ai-avatar/components/PanelVideoSelector.tsx
+++ b/apps/web/src/pages/ai-avatar/components/PanelVideoSelector.tsx
@@ -4,12 +4,15 @@
  * - 已选视频：竖屏 9:16 预览播放器 + 视频信息卡片 + 移除按钮
  */
 import type { AssetItem } from "@/api/assets"
+import type { AiAvatarTitleConfig } from "../types"
+import { getFontFamily } from "@/pages/generate/constants"
 
 export interface PanelVideoSelectorProps {
   selectedVideo: AssetItem | null
   /** 触发打开素材库弹窗 */
   onSelectVideo: () => void
   onRemoveVideo: () => void
+  titleConfig?: AiAvatarTitleConfig
 }
 
 /** 格式化时长（秒 → mm:ss） */
@@ -24,6 +27,7 @@ export function PanelVideoSelector({
   selectedVideo,
   onSelectVideo,
   onRemoveVideo,
+  titleConfig,
 }: PanelVideoSelectorProps) {
   /* 未选视频：虚线上传区，点击打开素材库弹窗 */
   if (!selectedVideo) {
@@ -53,13 +57,42 @@ export function PanelVideoSelector({
 
   return (
     <div>
-      {/* 竖屏 9:16 视频预览播放器 */}
-      <div className="aa-video-preview">
+      {/* 竖屏 9:16 视频预览播放器 + 标题实时预览 */}
+      <div className="aa-video-preview" style={{ position: "relative" }}>
         {fileUrl ? (
           <video src={fileUrl} poster={selectedVideo.thumbnail_url} controls playsInline />
         ) : (
           <div className="aa-video-preview__placeholder">视频暂不可预览</div>
         )}
+        {titleConfig?.title && (
+          <div
+            style={{
+              position: "absolute",
+              left: "50%",
+              transform: "translateX(-50%)",
+              ...(titleConfig.position === "top"
+                ? { top: "10%" }
+                : titleConfig.position === "bottom"
+                  ? { bottom: "10%" }
+                  : { top: "50%", transform: "translate(-50%, -50%)" }),
+              fontSize: Math.max(titleConfig.size, 32),
+              fontFamily: getFontFamily(titleConfig.font),
+              color: titleConfig.color,
+              fontWeight: titleConfig.bold ? 700 : 400,
+              fontStyle: titleConfig.italic ? "italic" : "normal",
+              textShadow: "0 2px 4px rgba(0,0,0,0.5)",
+              WebkitTextStroke: "2px #000",
+              pointerEvents: "none",
+              zIndex: 10,
+              maxWidth: "90%",
+              textAlign: "center",
+              whiteSpace: "pre-wrap",
+              lineHeight: 1.3,
+            }}
+          >
+            {titleConfig.title}
+          </div>
+        )}
       </div>
 
       {/* 视频信息卡片：文件名 / 时长 / 分辨率 */}
diff --git a/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx b/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx
index 2006548c4..7e5340830 100644
--- a/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx
+++ b/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx
@@ -3,7 +3,10 @@
  * 音色来源切换（系统预设 / 我的音色）、音色选择与试听、情绪/语速/语言参数
  */
 import { useEffect, useRef, useState } from "react"
+import { message } from "antd"
 import { fetchVoices } from "@/api/voices/voices"
+import { previewTts } from "@/api/tts"
+import { normalizeEmotion } from "../utils/contract"
 import type { UnifiedVoiceItem } from "@/api/voices/types"
 import {
   type VoiceSource,
@@ -43,6 +46,9 @@ export function PanelVoiceSelector({
   const [error, setError] = useState<string | null>(null)
   const [previewingId, setPreviewingId] = useState<string | null>(null)
   const audioRef = useRef<HTMLAudioElement | null>(null)
+  /** 克隆音色试听合成缓存：voiceId -> url，对齐配音库 useAudioPlayer */
+  const previewCacheRef = useRef<Map<string, string>>(new Map())
+  const VOICE_PREVIEW_TEXT = "你好呀，欢迎使用小虾智剪，这是我的配音效果，希望你喜欢。"
 
   /* 切换来源时重新获取音色列表 */
   useEffect(() => {
@@ -52,7 +58,7 @@ export function PanelVoiceSelector({
       setError(null)
       try {
         const res = await fetchVoices({ type: voiceSource })
-        if (!cancelled) setVoices(res.items || [])
+        if (!cancelled) setVoices(Array.isArray(res?.items) ? res.items : [])
       } catch (err) {
         if (!cancelled) setError(err instanceof Error ? err.message : "音色加载失败")
       } finally {
@@ -83,21 +89,20 @@ export function PanelVoiceSelector({
     setPreviewingId(null)
   }
 
-  const handlePreview = (voice: UnifiedVoiceItem) => {
-    const url = voice.preview_url || voice.audio_url
-    if (!url) return
-    /* 再次点击当前试听音色 → 停止 */
-    if (previewingId === voice.id) {
-      stopPreview()
-      return
-    }
+  const NO_PREVIEW_TIP = "该音色暂无试听音频，请先用此音色生成一段配音后再试听"
+
+  /** 用指定 URL 真实播放（抽取公共） */
+  const playAudioUrl = (voiceId: string, url: string) => {
+    // 临时兼容：后端 /tts/preview 返回 HTTP URL，staging 是 HTTPS，Mixed Content 会阻止加载
+    // OSS 同时支持 HTTP/HTTPS，直接替换协议即可
+    const safeUrl = url.startsWith("http://") ? url.replace("http://", "https://") : url
     if (audioRef.current) {
       audioRef.current.pause()
       audioRef.current = null
     }
-    const audio = new Audio(url)
+    const audio = new Audio(safeUrl)
     audioRef.current = audio
-    setPreviewingId(voice.id)
+    setPreviewingId(voiceId)
     audio.onended = () => {
       if (audioRef.current === audio) {
         audioRef.current = null
@@ -108,15 +113,80 @@ export function PanelVoiceSelector({
       if (audioRef.current === audio) {
         audioRef.current = null
         setPreviewingId(null)
-        setError("试听音频加载失败")
+        message.error("试听音频加载失败")
       }
     }
     void audio.play().catch(() => {
       setPreviewingId(null)
-      setError("试听播放失败")
+      message.error("试听播放失败")
     })
   }
 
+  const handlePreview = async (voice: UnifiedVoiceItem) => {
+    /* 再次点击当前试听音色 → 停止 */
+    if (previewingId === voice.id) {
+      stopPreview()
+      return
+    }
+
+    /* 克隆音色：preview_url/audio_url 通常为空，需走 POST /tts/preview
+     * 现合成示例文案再播放，对齐配音库 useAudioPlayer 行为 */
+    if (voice.type === "clone") {
+      const cached = previewCacheRef.current.get(voice.voice_clone_profile_id || voice.id)
+      if (cached) {
+        playAudioUrl(voice.id, cached)
+        return
+      }
+      const targetId = voice.voice_clone_profile_id || voice.id
+      // DEBUG: 打印请求参数，帮助定位 /tts/preview 失败原因
+      console.log("[AI数字人-克隆试听] previewTts 请求:", {
+        voice_id: targetId,
+        voice_name: voice.name,
+        voice_type: voice.type,
+        voice_clone_profile_id: voice.voice_clone_profile_id,
+        voice_id_field: voice.voice_id,
+      })
+      setPreviewingId(voice.id)
+      try {
+        const res = await previewTts({
+          text: VOICE_PREVIEW_TEXT,
+          voice_id: targetId,
+          speed: speed, // 透传用户选择的语速（#1822）
+          emotion: normalizeEmotion(emotion), // 情绪中文→英文枚举
+        })
+        console.log("[AI数字人-克隆试听] previewTts 响应:", {
+          audio_url: res.audio_url?.substring(0, 80),
+          duration: res.duration,
+        })
+        if (!res.audio_url) {
+          setPreviewingId(null)
+          message.error("合成试听失败：未返回音频")
+          return
+        }
+        previewCacheRef.current.set(targetId, res.audio_url)
+        playAudioUrl(voice.id, res.audio_url)
+      } catch (err) {
+        setPreviewingId(null)
+        // DEBUG: 打印详细错误信息
+        console.error("[AI数字人-克隆试听] previewTts 失败:", {
+          status: (err as { response?: { status?: number } })?.response?.status,
+          data: (err as { response?: { data?: unknown } })?.response?.data,
+          message: err instanceof Error ? err.message : String(err),
+        })
+        // apiClient 拦截器已统一 toast
+      }
+      return
+    }
+
+    /* 系统预设音色：沿用 preview_url/audio_url 直链播放 */
+    const url = voice.preview_url || voice.audio_url
+    if (!url) {
+      message.warning(NO_PREVIEW_TIP)
+      return
+    }
+    playAudioUrl(voice.id, url)
+  }
+
   const handleSpeedChange = (value: string) => {
     const parsed = parseFloat(value)
     if (Number.isNaN(parsed)) return
@@ -182,7 +252,7 @@ export function PanelVoiceSelector({
                   type="button"
                   className="aa-voice-card__preview"
                   title={previewingId === voice.id ? "停止试听" : "试听"}
-                  disabled={!previewUrl}
+                  disabled={voice.type === "preset" && !previewUrl}
                   onClick={(e) => {
                     e.stopPropagation()
                     handlePreview(voice)
diff --git a/apps/web/src/pages/ai-avatar/components/TitleLibraryModal.tsx b/apps/web/src/pages/ai-avatar/components/TitleLibraryModal.tsx
new file mode 100644
index 000000000..d8dc8dde7
--- /dev/null
+++ b/apps/web/src/pages/ai-avatar/components/TitleLibraryModal.tsx
@@ -0,0 +1,96 @@
+/**
+ * AI数字人 — 标题库选择弹窗
+ * 复用智能剪辑的标题库 API，选择标题后填入输入框
+ */
+import React, { useEffect, useState } from "react"
+import { getTitles } from "@/api/titles"
+import type { TitleItem } from "@/api/titles/types"
+
+interface TitleLibraryModalProps {
+  open: boolean
+  onClose: () => void
+  onSelect: (title: string) => void
+}
+
+const TitleLibraryModal: React.FC<TitleLibraryModalProps> = ({ open, onClose, onSelect }) => {
+  const [titles, setTitles] = useState<TitleItem[]>([])
+  const [loading, setLoading] = useState(false)
+  const [search, setSearch] = useState("")
+
+  useEffect(() => {
+    if (!open) return
+    setLoading(true)
+    getTitles()
+      .then((items) => setTitles(items))
+      .catch(() => setTitles([]))
+      .finally(() => setLoading(false))
+  }, [open])
+
+  const filtered = titles.filter(
+    (t) => !search || t.content.toLowerCase().includes(search.toLowerCase()),
+  )
+
+  if (!open) return null
+
+  return (
+    <div className="aa-modal-overlay" onClick={onClose}>
+      <div className="aa-modal" onClick={(e) => e.stopPropagation()} style={{ maxWidth: 600 }}>
+        <div className="aa-modal__header">
+          <span className="aa-modal__title">从标题库选择</span>
+          <button className="aa-modal__close" onClick={onClose}></button>
+        </div>
+        <div className="aa-modal__body">
+          <div style={{ marginBottom: 12 }}>
+            <input
+              className="aa-input"
+              placeholder="搜索标题..."
+              value={search}
+              onChange={(e) => setSearch(e.target.value)}
+            />
+          </div>
+          {loading ? (
+            <div style={{ textAlign: "center", padding: 40, color: "#8c8ca1" }}>加载中...</div>
+          ) : filtered.length === 0 ? (
+            <div style={{ textAlign: "center", padding: 40, color: "#8c8ca1" }}>
+              暂无标题，请先在标题库创建
+            </div>
+          ) : (
+            <div style={{ maxHeight: 400, overflowY: "auto" }}>
+              {filtered.map((t) => (
+                <div
+                  key={t.id}
+                  style={{
+                    padding: "12px 16px",
+                    marginBottom: 8,
+                    background: "#f8f8fc",
+                    borderRadius: 8,
+                    cursor: "pointer",
+                    transition: "background 0.2s",
+                  }}
+                  onMouseEnter={(e) => (e.currentTarget.style.background = "#eef0ff")}
+                  onMouseLeave={(e) => (e.currentTarget.style.background = "#f8f8fc")}
+                  onClick={() => {
+                    onSelect(t.content)
+                    onClose()
+                  }}
+                >
+                  <div style={{ fontSize: 14, color: "#1a1a2e", marginBottom: 4 }}>{t.content}</div>
+                  <div style={{ fontSize: 12, color: "#8c8ca1" }}>
+                    {t.word_count ?? t.content.length}字 · {t.created_at ? new Date(t.created_at).toLocaleDateString() : ""}
+                  </div>
+                </div>
+              ))}
+            </div>
+          )}
+        </div>
+        <div className="aa-modal__footer">
+          <button className="aa-btn" onClick={onClose}>
+            取消
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default TitleLibraryModal
diff --git a/apps/web/src/pages/ai-avatar/types.ts b/apps/web/src/pages/ai-avatar/types.ts
index f6d4426be..e2a118c73 100644
--- a/apps/web/src/pages/ai-avatar/types.ts
+++ b/apps/web/src/pages/ai-avatar/types.ts
@@ -44,6 +44,8 @@ export interface LipsyncJob {
   status: LipsyncStatus
   progress: number
   output_video_url: string | null
+  /** 对口型成片总时长（秒），后端返回；用于 B-roll 时间自动估算（#1809 ⑥） */
+  output_duration?: number
   error_message: string | null
   created_at: string
 }
@@ -75,6 +77,9 @@ export interface AiAvatarTitleConfig {
   shadow: boolean
   color: string
   auto_subtitle: boolean
+  /** 自定义位置坐标（position=custom 时生效，像素） */
+  pos_x?: number
+  pos_y?: number
 }
 
 /* ── 封面配置 ── */
@@ -84,6 +89,8 @@ export interface AiAvatarCoverConfig {
   frame_time: number
   upload_url: string | null
   thumbnail_url: string | null
+  /** 智能封面（MediaKit 选帧）返回的 OSS 非临时 URL（#1822） */
+  smart_cover_url: string | null
 }
 
 /* ── 渲染任务 ── */
@@ -101,7 +108,7 @@ export interface RenderJob {
 /* ── 默认值 ── */
 export const DEFAULT_TITLE_CONFIG: AiAvatarTitleConfig = {
   title: "",
-  position: "top",
+  position: "bottom",
   font: "思源黑体",
   size: 28,
   bold: true,
@@ -110,6 +117,8 @@ export const DEFAULT_TITLE_CONFIG: AiAvatarTitleConfig = {
   shadow: false,
   color: "#ffffff",
   auto_subtitle: true,
+  pos_x: undefined,
+  pos_y: undefined,
 }
 
 export const DEFAULT_COVER_CONFIG: AiAvatarCoverConfig = {
@@ -118,4 +127,5 @@ export const DEFAULT_COVER_CONFIG: AiAvatarCoverConfig = {
   frame_time: 0,
   upload_url: null,
   thumbnail_url: null,
+  smart_cover_url: null,
 }
diff --git a/apps/web/src/pages/ai-avatar/utils/contract.ts b/apps/web/src/pages/ai-avatar/utils/contract.ts
new file mode 100644
index 000000000..70e5c0fc5
--- /dev/null
+++ b/apps/web/src/pages/ai-avatar/utils/contract.ts
@@ -0,0 +1,76 @@
+/**
+ * AI数字人 — 前后端接口契约转换工具（#1822）
+ *
+ * 以 packages/domain/video_filter_builder.py 的 build_title_drawtext_filter() 为唯一口径
+ * （契约文档第 5 节的 titles[]/fontSize/frame/start/end 为误写，后端不认，禁止使用）。
+ */
+import type { AiAvatarTitleConfig, AiAvatarCoverConfig, VoiceEmotion } from "../types"
+
+/* ── 情绪：中文 → 英文（防御性映射；state 默认已是英文） ── */
+const EMOTION_ZH_TO_EN: Record<string, VoiceEmotion> = {
+  自然: "natural",
+  兴奋: "excited",
+  沉稳: "calm",
+  亲切: "friendly",
+}
+const VALID_EMOTIONS: VoiceEmotion[] = ["natural", "excited", "calm", "friendly"]
+
+/** 归一化为后端英文枚举 natural/excited/calm/friendly；非法/空值回退 natural。 */
+export function normalizeEmotion(raw: string | undefined | null): VoiceEmotion {
+  if (!raw) return "natural"
+  const v = raw.trim()
+  if ((VALID_EMOTIONS as string[]).includes(v)) return v as VoiceEmotion
+  return EMOTION_ZH_TO_EN[v] ?? "natural"
+}
+
+/* ── 标题：前端 state → 后端 build_title_drawtext_filter 字段（单个 title_config dict） ── */
+/**
+ * 后端真实字段：text(或content)、font(或font_preset)、font_size(或size)、
+ * font_color(或color，可传 #RRGGBB)、position(top/center/bottom/custom)、
+ * enabled、bold、stroke{enabled,width,color}、shadow{enabled,color,offset_x,offset_y}、
+ * pos_x/pos_y(custom 时)。
+ * 口播标题默认 position=bottom（不传后端会默认 top 跑到画面顶部）。
+ */
+export function buildTitleConfigPayload(cfg: AiAvatarTitleConfig): Record<string, unknown> {
+  const text = (cfg.title || "").trim()
+  if (!text) return {}
+  const position = cfg.position || "bottom"
+  const payload: Record<string, unknown> = {
+    text,
+    enabled: true,
+    font: cfg.font || "思源黑体",
+    font_size: Math.round(cfg.size) || 36,
+    font_color: cfg.color || "#ffffff",
+    position,
+    bold: !!cfg.bold,
+    stroke: cfg.stroke ? { enabled: true, width: 2, color: "#000000" } : { enabled: false },
+    shadow: cfg.shadow
+      ? { enabled: true, color: "#000000", offset_x: 2, offset_y: 2 }
+      : { enabled: false },
+  }
+  // 自定义坐标（custom 位置）
+  if (position === "custom" && typeof cfg.pos_x === "number" && typeof cfg.pos_y === "number") {
+    payload.pos_x = cfg.pos_x
+    payload.pos_y = cfg.pos_y
+  }
+  return payload
+}
+
+/* ── 封面：前端 state → 后端 render cover_config ── */
+export function buildCoverConfigPayload(
+  cfg: AiAvatarCoverConfig,
+  smartCoverUrl: string | null,
+): Record<string, unknown> {
+  const payload: Record<string, unknown> = {
+    enabled: !!cfg.enabled,
+    mode: cfg.mode,
+    // build_cover_extract_command 读取 timestamp（截帧秒数）
+    timestamp: cfg.frame_time || 0,
+  }
+  if (smartCoverUrl) payload.cover_url = smartCoverUrl
+  // 自定义上传：blob: 本地预览地址无法给后端，仅 OSS URL 可用
+  if (cfg.mode === "upload" && cfg.upload_url && !cfg.upload_url.startsWith("blob:")) {
+    payload.upload_url = cfg.upload_url
+  }
+  return payload
+}
diff --git a/apps/web/src/pages/ai-avatar/utils/sentences.ts b/apps/web/src/pages/ai-avatar/utils/sentences.ts
new file mode 100644
index 000000000..7202e59a3
--- /dev/null
+++ b/apps/web/src/pages/ai-avatar/utils/sentences.ts
@@ -0,0 +1,62 @@
+/**
+ * AI数字人 — 文案分句 & B-roll 时间自动估算（#1809 ⑤⑥）
+ */
+
+export interface ScriptSentence {
+  /** 句子序号（从 0 开始，对应提交给后端的 script_segment_index） */
+  index: number
+  /** 句子文本（去掉首尾空白） */
+  text: string
+  /** 句子字数（按中文/字符计，去除空白） */
+  charCount: number
+  /** 累计起始字数（用于时间估算） */
+  startChar: number
+  /** 估算的对口型视频内起始时间（秒） */
+  startTime: number
+  /** 估算的对口型视频内结束时间（秒） */
+  endTime: number
+}
+
+/**
+ * 按句号/问号/感叹号/分号/换行分句（兼容中英文标点）。
+ * 空文案返回空数组。时间按「该句字数 ÷ 全文总字数 × 口播总时长」线性估算。
+ */
+export function splitScriptIntoSentences(
+  scriptText: string,
+  outputDuration: number,
+): ScriptSentence[] {
+  const text = (scriptText || "").trim()
+  if (!text) return []
+
+  const rawParts = text
+    .split(/[。！？!?；;\n\r]+/)
+    .map((part) => part.trim())
+    .filter((part) => part.length > 0)
+
+  const totalChars = rawParts.reduce((sum, part) => sum + part.replace(/\s/g, "").length, 0)
+  const duration = outputDuration > 0 ? outputDuration : 0
+
+  const sentences: ScriptSentence[] = []
+  let accChar = 0
+  rawParts.forEach((part, i) => {
+    const charCount = part.replace(/\s/g, "").length
+    const startTime = duration > 0 && totalChars > 0 ? (accChar / totalChars) * duration : 0
+    const endTime =
+      duration > 0 && totalChars > 0 ? ((accChar + charCount) / totalChars) * duration : 0
+    sentences.push({
+      index: i,
+      text: part,
+      charCount,
+      startChar: accChar,
+      startTime: round1(startTime),
+      endTime: round1(endTime),
+    })
+    accChar += charCount
+  })
+
+  return sentences
+}
+
+function round1(n: number): number {
+  return Math.round(n * 10) / 10
+}
diff --git a/apps/web/src/pages/duplication/duplication.css b/apps/web/src/pages/duplication/duplication.css
index 5e39f2cce..577e28776 100644
--- a/apps/web/src/pages/duplication/duplication.css
+++ b/apps/web/src/pages/duplication/duplication.css
@@ -10,7 +10,7 @@
    ============================================================ */
 .dup-page {
   padding: var(--space-2xl) var(--space-lg);
-  max-width: 1100px;
+  max-width: 1400px;
   margin: 0 auto;
 }
 
diff --git a/apps/web/src/pages/generate/GeneratePage.tsx b/apps/web/src/pages/generate/GeneratePage.tsx
index e638e7c34..54c0863b9 100644
--- a/apps/web/src/pages/generate/GeneratePage.tsx
+++ b/apps/web/src/pages/generate/GeneratePage.tsx
@@ -548,10 +548,21 @@ const GeneratePage: React.FC = () => {
             <div
               style={{
                 display: "flex",
-                justifyContent: "center",
+                flexDirection: "column",
+                alignItems: "center",
                 marginTop: 16,
               }}
             >
+              <h2
+                style={{
+                  textAlign: "center",
+                  marginBottom: 12,
+                  fontSize: "1.5rem",
+                  fontWeight: 600,
+                }}
+              >
+                🎬 确认生成
+              </h2>
               <div
                 style={{
                   display: "flex",
diff --git a/apps/web/src/pages/generate/components/title/TitleStylePanel.css b/apps/web/src/pages/generate/components/title/TitleStylePanel.css
new file mode 100644
index 000000000..30c642941
--- /dev/null
+++ b/apps/web/src/pages/generate/components/title/TitleStylePanel.css
@@ -0,0 +1,192 @@
+/* ============================================================
+   TitleStylePanel 标题样式面板 — 独立共用样式（#1809 ⑦）
+
+   从 generate.css 抽取的标题样式区块，供「智能剪辑」与「AI数字人」
+   两个页面共用。AI数字人页面不引入 generate.css，直接由
+   TitleStylePanel.tsx import 本文件，保证 24 个 T 预设格子的网格布局、
+   配色描边、选中态与智能剪辑页面完全一致。
+
+   注意：本文件规则与 generate.css 中同名规则一一对应、取值相同；
+   智能剪辑页面两处同时存在时同优先级同值，不改变其原有呈现。
+   ============================================================ */
+
+/* ── 区块容器 ── */
+.xx-title-style-section {
+  margin-top: 22px;
+  padding-top: 20px;
+  border-top: 1px solid var(--border-light);
+}
+
+.xx-section-subtitle {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--text-primary);
+  margin: 0 0 16px;
+}
+
+.xx-title-style-row {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 14px;
+  margin-bottom: 14px;
+}
+
+.xx-half-field {
+  margin-bottom: 0;
+}
+
+.xx-field-label-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 8px;
+}
+
+.xx-field-label-row label {
+  margin-bottom: 0;
+}
+
+.xx-field-value {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--primary-color);
+}
+
+/* ── 共用表单字段（位置/字体下拉） ── */
+.xx-title-style-section .xx-form-field {
+  margin-bottom: 14px;
+}
+
+.xx-title-style-section .xx-form-field:last-child {
+  margin-bottom: 0;
+}
+
+.xx-title-style-section .xx-form-field label {
+  display: block;
+  font-weight: 600;
+  margin-bottom: 8px;
+  font-size: 13px;
+  color: var(--text-primary);
+}
+
+.xx-title-style-section .xx-form-field select,
+.xx-title-style-section .xx-form-field input {
+  width: 100%;
+  height: 44px;
+  border: 1px solid var(--border-color);
+  border-radius: var(--radius-sm);
+  background: var(--bg-primary);
+  padding: 0 14px;
+  font-size: 14px;
+  outline: 0;
+  transition: 0.15s ease;
+  color: var(--text-primary);
+}
+
+.xx-title-style-section .xx-form-field select:focus,
+.xx-title-style-section .xx-form-field input:focus {
+  border-color: var(--primary-color);
+  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
+}
+
+/* ── 字号滑块 ── */
+.xx-slider {
+  width: 100%;
+  height: 6px;
+  -webkit-appearance: none;
+  appearance: none;
+  background: var(--border-color);
+  border-radius: 3px;
+  outline: none;
+  cursor: pointer;
+}
+
+.xx-slider::-webkit-slider-thumb {
+  -webkit-appearance: none;
+  appearance: none;
+  width: 18px;
+  height: 18px;
+  background: var(--primary-color);
+  border-radius: 50%;
+  cursor: pointer;
+  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3);
+}
+
+.xx-slider::-moz-range-thumb {
+  width: 18px;
+  height: 18px;
+  background: var(--primary-color);
+  border-radius: 50%;
+  cursor: pointer;
+  border: none;
+  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3);
+}
+
+/* ── 标题预设卡片网格（24 个 T 格子） ── */
+.xx-title-presets-grid {
+  display: grid;
+  grid-template-columns: repeat(6, 52px);
+  gap: 1px;
+}
+
+.xx-title-preset-card {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 52px;
+  height: 52px;
+  padding: 0;
+  background: #404040;
+  border: 2px solid transparent;
+  border-radius: 8px;
+  cursor: pointer;
+  transition: all 0.15s;
+}
+
+.xx-title-preset-card:hover {
+  border-color: #666;
+  background: #4d4d4d;
+}
+
+.xx-title-preset-card.active {
+  border-color: #409eff;
+  background: #4d4d4d;
+}
+
+.xx-title-preset-preview-text {
+  font-size: 32px;
+  line-height: 1;
+  user-select: none;
+}
+
+/* ── 样式按钮组（加粗/斜体/描边/阴影） ── */
+.xx-style-btns {
+  display: flex;
+  gap: 8px;
+}
+
+.xx-style-btn {
+  width: 40px;
+  height: 40px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border: 1px solid var(--border-color);
+  border-radius: var(--radius-sm);
+  background: var(--bg-primary);
+  cursor: pointer;
+  font-size: 15px;
+  color: var(--text-secondary);
+  transition: all 0.15s;
+}
+
+.xx-style-btn:hover {
+  border-color: var(--primary-300);
+  color: var(--primary-color);
+}
+
+.xx-style-btn.active {
+  background: var(--primary-color);
+  border-color: var(--primary-color);
+  color: #fff;
+}
diff --git a/apps/web/src/pages/generate/components/title/TitleStylePanel.tsx b/apps/web/src/pages/generate/components/title/TitleStylePanel.tsx
index 55078aa29..82acbe6f6 100644
--- a/apps/web/src/pages/generate/components/title/TitleStylePanel.tsx
+++ b/apps/web/src/pages/generate/components/title/TitleStylePanel.tsx
@@ -5,6 +5,9 @@
 import React from "react"
 import type { TitleSettings } from "../../types"
 import TitlePresetsGrid from "./TitlePresetsGrid"
+// 标题样式面板共用样式（#1809 ⑦）：智能剪辑与 AI数字人复用同一组件，
+// 由组件自带样式，避免 AI数字人页面重复引入整个 generate.css
+import "./TitleStylePanel.css"
 
 interface PositionOption {
   value: string
diff --git a/apps/web/src/pages/generate/generate.css b/apps/web/src/pages/generate/generate.css
index 2e81c174a..0f8a5c2df 100644
--- a/apps/web/src/pages/generate/generate.css
+++ b/apps/web/src/pages/generate/generate.css
@@ -10,7 +10,7 @@
 .xx-generate-page {
   min-height: 100%;
   padding: var(--space-xl);
-  max-width: 1400px;
+  max-width: 1680px;
   margin: 0 auto;
 }
 
diff --git a/apps/web/src/pages/my-templates/MyTemplates.css b/apps/web/src/pages/my-templates/MyTemplates.css
index 5aa2c7b8e..798d8c804 100644
--- a/apps/web/src/pages/my-templates/MyTemplates.css
+++ b/apps/web/src/pages/my-templates/MyTemplates.css
@@ -5,7 +5,7 @@
 
 .mt-page {
   padding: var(--space-xl);
-  max-width: 1400px;
+  max-width: 1680px;
   margin: 0 auto;
 }
 
diff --git a/apps/web/src/pages/scripts/ScriptLibrary.tsx b/apps/web/src/pages/scripts/ScriptLibrary.tsx
new file mode 100644
index 000000000..e98cf8ad3
--- /dev/null
+++ b/apps/web/src/pages/scripts/ScriptLibrary.tsx
@@ -0,0 +1,273 @@
+/**
+ * 文案库页面 — Issue #1811
+ * 风格对齐标题库（同类资源管理页面统一风格），单列卡片列表
+ * 功能：列表 / 新建 / 编辑 / 删除 / 按标题搜索 / 空状态
+ * 对接后端 /api/v1/scripts CRUD
+ */
+import React, { useEffect, useMemo, useState } from "react"
+import { Modal, message, Empty, Button, Input, Popconfirm } from "antd"
+import { PlusOutlined, EditOutlined, DeleteOutlined, SearchOutlined } from "@ant-design/icons"
+import {
+  getScripts,
+  createScript,
+  updateScript,
+  deleteScript,
+  type ScriptItem,
+} from "@/api/scripts"
+import "./scripts.css"
+
+const { TextArea } = Input
+
+const ScriptLibrary: React.FC = () => {
+  const [scripts, setScripts] = useState<ScriptItem[]>([])
+  const [loading, setLoading] = useState(false)
+  const [searchText, setSearchText] = useState("")
+
+  // 弹窗状态
+  const [createOpen, setCreateOpen] = useState(false)
+  const [editing, setEditing] = useState<ScriptItem | null>(null)
+  const [formTitle, setFormTitle] = useState("")
+  const [formContent, setFormContent] = useState("")
+  const [submitting, setSubmitting] = useState(false)
+
+  const load = async () => {
+    setLoading(true)
+    try {
+      const items = await getScripts()
+      setScripts(items)
+    } catch (err) {
+      message.error(err instanceof Error ? err.message : "加载文案列表失败")
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  useEffect(() => {
+    load()
+  }, [])
+
+  const filtered = useMemo(() => {
+    const kw = searchText.trim().toLowerCase()
+    if (!kw) return scripts
+    return scripts.filter((s) => s.title.toLowerCase().includes(kw))
+  }, [scripts, searchText])
+
+  const openCreate = () => {
+    setFormTitle("")
+    setFormContent("")
+    setCreateOpen(true)
+  }
+
+  const openEdit = (item: ScriptItem) => {
+    setEditing(item)
+    setFormTitle(item.title)
+    setFormContent(item.content)
+  }
+
+  const handleCloseCreate = () => {
+    setCreateOpen(false)
+    setFormTitle("")
+    setFormContent("")
+  }
+
+  const handleCloseEdit = () => {
+    setEditing(null)
+    setFormTitle("")
+    setFormContent("")
+  }
+
+  const handleCreate = async () => {
+    const title = formTitle.trim()
+    const content = formContent.trim()
+    if (!title || !content) {
+      message.warning("请填写标题和正文")
+      return
+    }
+    setSubmitting(true)
+    try {
+      await createScript({ title, content })
+      message.success("文案已创建")
+      handleCloseCreate()
+      await load()
+    } catch (err) {
+      message.error(err instanceof Error ? err.message : "创建文案失败")
+    } finally {
+      setSubmitting(false)
+    }
+  }
+
+  const handleUpdate = async () => {
+    if (!editing) return
+    const title = formTitle.trim()
+    const content = formContent.trim()
+    if (!title || !content) {
+      message.warning("请填写标题和正文")
+      return
+    }
+    setSubmitting(true)
+    try {
+      await updateScript(editing.id, { title, content })
+      message.success("文案已更新")
+      handleCloseEdit()
+      await load()
+    } catch (err) {
+      message.error(err instanceof Error ? err.message : "更新文案失败")
+    } finally {
+      setSubmitting(false)
+    }
+  }
+
+  const handleDelete = async (id: string) => {
+    try {
+      await deleteScript(id)
+      message.success("文案已删除")
+      await load()
+    } catch (err) {
+      message.error(err instanceof Error ? err.message : "删除文案失败")
+    }
+  }
+
+  const preview = (content: string) => {
+    const text = content.replace(/\s+/g, " ").trim()
+    return text.length > 120 ? `${text.slice(0, 120)}…` : text || "（空）"
+  }
+
+  const formatTime = (iso: string) => {
+    const d = new Date(iso)
+    if (Number.isNaN(d.getTime())) return iso
+    const pad = (n: number) => String(n).padStart(2, "0")
+    return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(
+      d.getHours(),
+    )}:${pad(d.getMinutes())}`
+  }
+
+  return (
+    <div className="xx-scripts-page">
+      <div className="xx-scripts-layout">
+        {/* 顶部操作栏 */}
+        <div className="xx-scripts-filters">
+          <div className="xx-scripts-filters-left">
+            <Input
+              prefix={<SearchOutlined />}
+              placeholder="按标题搜索"
+              value={searchText}
+              onChange={(e) => setSearchText(e.target.value)}
+              allowClear
+              style={{ width: 260 }}
+            />
+          </div>
+          <div className="xx-scripts-filters-right">
+            <Button type="primary" icon={<PlusOutlined />} onClick={openCreate}>
+              新建文案
+            </Button>
+          </div>
+        </div>
+
+        {/* 列表 / 空状态 */}
+        {loading ? (
+          <div className="xx-scripts-loading">加载中…</div>
+        ) : filtered.length === 0 ? (
+          <Empty
+            description={searchText ? "没有匹配的文案" : "暂无文案，点击右上角「新建文案」开始创作"}
+          />
+        ) : (
+          <div className="xx-scripts-list">
+            {filtered.map((s) => (
+              <div key={s.id} className="xx-script-card">
+                <div className="xx-script-card-header">
+                  <div className="xx-script-title">{s.title}</div>
+                  <div className="xx-script-actions">
+                    <Button
+                      size="small"
+                      type="text"
+                      icon={<EditOutlined />}
+                      onClick={() => openEdit(s)}
+                    >
+                      编辑
+                    </Button>
+                    <Popconfirm
+                      title="确认删除此文案？"
+                      description="删除后不可恢复"
+                      okText="删除"
+                      cancelText="取消"
+                      okButtonProps={{ danger: true }}
+                      onConfirm={() => handleDelete(s.id)}
+                    >
+                      <Button size="small" type="text" danger icon={<DeleteOutlined />}>
+                        删除
+                      </Button>
+                    </Popconfirm>
+                  </div>
+                </div>
+                <div className="xx-script-preview">{preview(s.content)}</div>
+                <div className="xx-script-meta">
+                  <span>{s.char_count ?? s.content.length} 字</span>
+                  <span>·</span>
+                  <span>{formatTime(s.created_at)}</span>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+
+      {/* 新建弹窗 */}
+      <Modal
+        title="新建文案"
+        open={createOpen}
+        onCancel={handleCloseCreate}
+        onOk={handleCreate}
+        confirmLoading={submitting}
+        destroyOnClose
+        okText="创建"
+        cancelText="取消"
+      >
+        <div className="xx-script-form">
+          <Input
+            placeholder="标题"
+            value={formTitle}
+            onChange={(e) => setFormTitle(e.target.value)}
+            maxLength={200}
+          />
+          <TextArea
+            placeholder="正文"
+            value={formContent}
+            onChange={(e) => setFormContent(e.target.value)}
+            rows={8}
+            maxLength={5000}
+          />
+        </div>
+      </Modal>
+
+      {/* 编辑弹窗 */}
+      <Modal
+        title="编辑文案"
+        open={!!editing}
+        onCancel={handleCloseEdit}
+        onOk={handleUpdate}
+        confirmLoading={submitting}
+        destroyOnClose
+        okText="保存"
+        cancelText="取消"
+      >
+        <div className="xx-script-form">
+          <Input
+            placeholder="标题"
+            value={formTitle}
+            onChange={(e) => setFormTitle(e.target.value)}
+            maxLength={200}
+          />
+          <TextArea
+            placeholder="正文"
+            value={formContent}
+            onChange={(e) => setFormContent(e.target.value)}
+            rows={8}
+            maxLength={5000}
+          />
+        </div>
+      </Modal>
+    </div>
+  )
+}
+
+export default ScriptLibrary
diff --git a/apps/web/src/pages/scripts/scripts.css b/apps/web/src/pages/scripts/scripts.css
new file mode 100644
index 000000000..eee4305b9
--- /dev/null
+++ b/apps/web/src/pages/scripts/scripts.css
@@ -0,0 +1,137 @@
+/**
+ * 文案库页面 - V21 设计系统样式
+ * 单列卡片列表，风格对齐标题库（xx-titles-page）
+ */
+@import "../../styles/global.css";
+
+/* ============================================================
+   页面容器
+   ============================================================ */
+.xx-scripts-page {
+  min-height: 100%;
+  padding: var(--space-xl);
+}
+
+.xx-scripts-layout {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-lg);
+  max-width: 960px;
+  margin: 0 auto;
+}
+
+/* ============================================================
+   顶部筛选栏
+   ============================================================ */
+.xx-scripts-filters {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--space-md);
+  flex-wrap: wrap;
+}
+
+.xx-scripts-filters-left {
+  display: flex;
+  align-items: center;
+  gap: var(--space-sm);
+}
+
+.xx-scripts-filters-right {
+  display: flex;
+  align-items: center;
+  gap: var(--space-sm);
+}
+
+/* ============================================================
+   列表
+   ============================================================ */
+.xx-scripts-list {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-sm);
+}
+
+.xx-scripts-loading {
+  text-align: center;
+  color: var(--text-secondary);
+  padding: var(--space-xl);
+  font-size: var(--font-size-sm);
+}
+
+/* ============================================================
+   文案卡片（对齐标题卡片风格，单列）
+   ============================================================ */
+.xx-script-card {
+  border: 1px solid var(--border-color);
+  background: var(--bg-primary);
+  border-radius: var(--radius-md);
+  padding: var(--space-md);
+  transition: var(--transition-all);
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.xx-script-card:hover {
+  border-color: var(--primary-color);
+  background: var(--bg-secondary);
+  box-shadow: var(--shadow-sm);
+}
+
+.xx-script-card-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: var(--space-md);
+}
+
+.xx-script-title {
+  font-size: var(--font-size-base);
+  font-weight: var(--font-weight-semibold);
+  color: var(--text-primary);
+  line-height: 1.5;
+  word-break: break-word;
+  flex: 1;
+}
+
+.xx-script-actions {
+  display: flex;
+  align-items: center;
+  gap: var(--space-xxs);
+  flex-shrink: 0;
+  opacity: 0;
+  transition: var(--transition-opacity, opacity 0.2s);
+}
+
+.xx-script-card:hover .xx-script-actions {
+  opacity: 1;
+}
+
+.xx-script-preview {
+  font-size: var(--font-size-sm);
+  color: var(--text-secondary);
+  line-height: 1.6;
+  word-break: break-word;
+}
+
+.xx-script-meta {
+  display: flex;
+  align-items: center;
+  gap: var(--space-xs);
+  font-size: var(--font-size-xs, 12px);
+  color: var(--text-tertiary);
+}
+
+/* ============================================================
+   弹窗表单
+   ============================================================ */
+.xx-script-form {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-md);
+}
+
+.xx-script-form textarea.ant-input {
+  resize: vertical;
+}
diff --git a/apps/web/src/pages/tasks/tasks.css b/apps/web/src/pages/tasks/tasks.css
index 0548cc3b3..174c72233 100644
--- a/apps/web/src/pages/tasks/tasks.css
+++ b/apps/web/src/pages/tasks/tasks.css
@@ -2,7 +2,7 @@
 
 .task-center {
   padding: var(--space-lg);
-  max-width: 1400px;
+  max-width: 1680px;
   margin: 0 auto;
 }
 
diff --git a/apps/web/src/router/appRoutes.tsx b/apps/web/src/router/appRoutes.tsx
index af2b16221..27255d4a8 100644
--- a/apps/web/src/router/appRoutes.tsx
+++ b/apps/web/src/router/appRoutes.tsx
@@ -24,6 +24,10 @@ const appChildren: RouteObject[] = [
     path: "titles",
     lazy: lazyRoute(() => import("@/pages/titles/TitleLibrary")),
   },
+  {
+    path: "scripts",
+    lazy: lazyRoute(() => import("@/pages/scripts/ScriptLibrary")),
+  },
   {
     path: "voices",
     lazy: lazyRoute(() => import("@/pages/voices/VoiceLibrary")),