feat: 添加会议章节和目录功能

- 在 `PublicMeetingPreviewVO` 中添加 `chapters` 字段
- 更新 `MeetingPreview` 组件以支持章节和目录展示
- 添加新的 `pageCatalog` 选项卡，展示 AI 生成的目录
- 实现章节与转录内容的关联和跳转功能
- 优化关键词和总结内容的展示布局

backend/src/main/java/com/imeeting/controller/biz/MeetingPublicPreviewController.java

@@ -53,6 +53,7 @@ public class MeetingPublicPreviewController {
                 data.getMeeting().setAccessPassword(null);
             }
             data.setTranscripts(meetingQueryService.getTranscripts(id));
+            data.setChapters(meetingQueryService.getChapters(id));
             return ApiResponse.ok(data);
         } catch (RuntimeException ex) {
             return ApiResponse.error(ex.getMessage());

backend/src/main/java/com/imeeting/dto/biz/PublicMeetingPreviewVO.java

@@ -3,9 +3,11 @@ package com.imeeting.dto.biz;
 import lombok.Data;
 
 import java.util.List;
+import java.util.Map;
 
 @Data
 public class PublicMeetingPreviewVO {
     private MeetingVO meeting;
     private List<MeetingTranscriptVO> transcripts;
+    private List<Map<String, Object>> chapters;
 }

frontend/src/api/business/meeting.ts

@@ -266,6 +266,7 @@ export interface MeetingChapterVO {
 export interface PublicMeetingPreviewVO {
   meeting: MeetingVO;
   transcripts: MeetingTranscriptVO[];
+  chapters?: MeetingChapterVO[];
 }
 
 export const getMeetingDetail = (id: number) => {

frontend/src/pages/business/MeetingPreview.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useRef, useState } from "react";
-import { Alert, Button, Empty, Input, Result, Segmented, Skeleton, Tabs, Tag, message } from "antd";
+import { Alert, Button, Empty, Input, Result, Skeleton, Tabs, message } from "antd";
 import { useParams, useSearchParams } from "react-router-dom";
 import {
   AudioOutlined,
@@ -7,7 +7,6 @@ import {
   CaretRightFilled,
   ClockCircleOutlined,
   CopyOutlined,
-  FastForwardOutlined,
   FileTextOutlined,
   LockOutlined,
   PauseOutlined,
@@ -17,6 +16,7 @@ import {
   UserOutlined,
   DownOutlined,
   UpOutlined,
+  LinkOutlined,
 } from "@ant-design/icons";
 import dayjs from "dayjs";
 import ReactMarkdown from "react-markdown";
@@ -25,6 +25,7 @@ import {
   getPublicMeetingPreview,
   resolveAudioMimeType,
   resolveMeetingPlaybackAudioUrl,
+  type MeetingChapterVO,
   type MeetingTranscriptVO,
   type MeetingVO,
 } from "../../api/business/meeting";
@@ -32,87 +33,117 @@ import { buildMeetingAnalysis } from "./meetingAnalysis";
 import "./MeetingPreview.css";
 
 type AnalysisTab = "chapters" | "speakers" | "actions" | "todos";
-type PreviewPageTab = "summary" | "transcript";
+type PreviewPageTab = "summary" | "catalog" | "transcript";
 
 const TEXT = {
-  statusTranscribing: "\u8f6c\u5199\u4e2d",
-  statusSummarizing: "\u603b\u7ed3\u4e2d",
-  statusCompleted: "\u5df2\u5b8c\u6210",
-  statusPending: "\u5f85\u5904\u7406",
-  hintTranscribing: "\u4f1a\u8bae\u5185\u5bb9\u4ecd\u5728\u6574\u7406\u4e2d\uff0c\u9884\u89c8\u4f1a\u6301\u7eed\u8865\u5168\u3002",
-  hintSummarizing: "AI \u6b63\u5728\u751f\u6210\u4f1a\u8bae\u603b\u7ed3\uff0c\u5df2\u5b8c\u6210\u5185\u5bb9\u4f1a\u4f18\u5148\u5c55\u793a\u3002",
-  hintCompleted: "\u4f1a\u8bae\u7eaa\u8981\u3001\u5206\u6790\u548c\u8f6c\u5f55\u5185\u5bb9\u5df2\u751f\u6210\u5b8c\u6210\u3002",
-  hintPending: "\u5f53\u524d\u4f1a\u8bae\u5c1a\u672a\u751f\u6210\u5b8c\u6574\u5185\u5bb9\uff0c\u8bf7\u7a0d\u540e\u91cd\u8bd5\u3002",
-  missingMeetingId: "\u672a\u63d0\u4f9b\u4f1a\u8bae\u7f16\u53f7",
-  loadFailed: "\u4f1a\u8bae\u9884\u89c8\u52a0\u8f7d\u5931\u8d25",
-  noMeetingData: "\u672a\u627e\u5230\u4f1a\u8bae\u6570\u636e",
-  previewLabel: "\u4f1a\u8bae\u9884\u89c8",
-  untitledMeeting: "\u672a\u547d\u540d\u4f1a\u8bae",
-  meetingTime: "\u4f1a\u8bae\u65f6\u95f4",
-  hostCreator: "\u4e3b\u6301/\u521b\u5efa",
-  participantsCount: "\u53c2\u4f1a\u4eba\u6570",
-  tagsCount: "\u6807\u7b7e\u6570\u91cf",
-  notSet: "\u672a\u8bbe\u7f6e",
-  notFilled: "\u672a\u586b\u5199",
-  pageSummary: "\u603b\u7ed3\u4e0e\u5206\u6790",
-  pageTranscript: "\u8f6c\u5f55\u4e0e\u97f3\u9891",
-  copyLink: "\u590d\u5236\u94fe\u63a5",
-  shareNow: "\u7acb\u5373\u5206\u4eab",
-  shareCopied: "\u9884\u89c8\u94fe\u63a5\u5df2\u590d\u5236",
-  shareFallbackCopied: "\u5f53\u524d\u8bbe\u5907\u4e0d\u652f\u6301\u7cfb\u7edf\u5206\u4eab\uff0c\u5df2\u4e3a\u4f60\u590d\u5236\u94fe\u63a5",
-  shareFailed: "\u5206\u4eab\u5931\u8d25\uff0c\u8bf7\u5148\u590d\u5236\u94fe\u63a5",
-  accessCheck: "\u8bbf\u95ee\u6821\u9a8c",
-  passwordRequired: "\u8be5\u4f1a\u8bae\u9700\u8981\u8bbf\u95ee\u5bc6\u7801",
-  passwordHint: "\u8bf7\u8f93\u5165\u4f1a\u8bae\u7684 access_password \u540e\u7ee7\u7eed\u8bbf\u95ee\u9884\u89c8\u5185\u5bb9\u3002",
-  passwordPlaceholder: "\u8bf7\u8f93\u5165 access_password",
-  openPreview: "\u8fdb\u5165\u9884\u89c8",
-  invalidPassword: "\u8bbf\u95ee\u5bc6\u7801\u9519\u8bef",
-  basicInfo: "\u57fa\u672c\u4fe1\u606f",
-  meetingOverview: "\u4f1a\u8bae\u6982\u51b5",
-  creator: "\u521b\u5efa\u4eba",
-  host: "\u4e3b\u6301\u4eba",
-  createdAt: "\u521b\u5efa\u65f6\u95f4",
-  audioStatus: "\u97f3\u9891\u72b6\u6001",
-  participants: "\u53c2\u4f1a\u4eba\u5458",
-  tags: "\u4f1a\u8bae\u6807\u7b7e",
-  aiAnalysis: "AI \u5206\u6790",
-  analysis: "\u4f1a\u8bae\u5206\u6790",
-  previewExtra: "\u9884\u89c8\u9875\u4ec5\u8bfb\u5c55\u793a",
-  audioPlaybackWarning: "\u97f3\u9891\u4fdd\u5b58\u5931\u8d25\uff0c\u53ef\u80fd\u5f71\u54cd\u56de\u653e\u3002",
-  summaryOverview: "\u5168\u6587\u6982\u8981",
-  summaryEmpty: "\u6682\u65e0\u6982\u8981\u5185\u5bb9",
-  analysisChapters: "\u7ae0\u8282",
-  analysisSpeakers: "\u53d1\u8a00\u4eba",
-  analysisKeyPoints: "\u5173\u952e\u8981\u70b9",
-  analysisTodos: "\u5f85\u529e\u4e8b\u9879",
-  noChapterAnalysis: "\u6682\u65e0\u7ae0\u8282\u5206\u6790",
-  noSpeakerAnalysis: "\u6682\u65e0\u53d1\u8a00\u4eba\u5206\u6790",
-  noKeyPoints: "\u6682\u65e0\u5173\u952e\u8981\u70b9",
-  noTodos: "\u6682\u65e0\u5f85\u529e\u4e8b\u9879",
-  chapterFallback: "\u7ae0\u8282",
-  speakerFallback: "\u53d1\u8a00\u4eba",
-  speakerSummary: "\u53d1\u8a00\u6982\u8ff0",
-  keyPointFallback: "\u8981\u70b9",
-  noChapterSummary: "\u6682\u65e0\u7ae0\u8282\u63cf\u8ff0",
-  noSpeakerSummary: "\u6682\u65e0\u53d1\u8a00\u603b\u7ed3",
-  noKeyPointSummary: "\u6682\u65e0\u8981\u70b9\u8bf4\u660e",
-  summarySection: "\u4f1a\u8bae\u7eaa\u8981",
-  fullSummary: "\u5b8c\u6574\u7eaa\u8981",
-  noSummary: "\u6682\u65e0\u4f1a\u8bae\u7eaa\u8981",
-  transcriptSection: "\u4f1a\u8bae\u8f6c\u5f55",
-  transcriptTitle: "\u9010\u6bb5\u8f6c\u5f55",
-  noDuration: "\u6682\u65e0\u65f6\u957f",
-  audioUnavailable: "\u97f3\u9891\u6587\u4ef6\u4e0d\u53ef\u7528\uff0c\u4ec5\u5c55\u793a\u8f6c\u5f55\u5185\u5bb9\u3002",
-  noTranscript: "\u6682\u65e0\u8f6c\u5f55\u5185\u5bb9",
-  unknownSpeaker: "\u672a\u77e5\u53d1\u8a00\u4eba",
+  statusTranscribing: "转写中",
+  statusSummarizing: "总结中",
+  statusCompleted: "已完成",
+  statusPending: "待处理",
+  hintTranscribing: "会议内容仍在整理中，预览会持续补全。",
+  hintSummarizing: "AI 正在生成会议总结，已完成内容会优先展示。",
+  hintCompleted: "会议纪要、分析和转录内容已生成完成。",
+  hintPending: "当前会议尚未生成完整内容，请稍后重试。",
+  missingMeetingId: "未提供会议编号",
+  loadFailed: "会议预览加载失败",
+  noMeetingData: "未找到会议数据",
+  previewLabel: "会议预览",
+  untitledMeeting: "未命名会议",
+  meetingTime: "会议时间",
+  hostCreator: "主持/创建",
+  participantsCount: "参会人数",
+  tagsCount: "标签数量",
+  notSet: "未设置",
+  notFilled: "未填写",
+  pageSummary: "AI 纪要",
+  pageCatalog: "AI 目录",
+  pageTranscript: "转录原文",
+  copyLink: "复制链接",
+  shareNow: "立即分享",
+  shareCopied: "预览链接已复制",
+  shareFallbackCopied: "当前设备不支持系统分享，已为你复制链接",
+  shareFailed: "分享失败，请先复制链接",
+  accessCheck: "访问校验",
+  passwordRequired: "该会议需要访问密码",
+  passwordHint: "请输入会议的 access_password 后继续访问预览内容。",
+  passwordPlaceholder: "请输入 access_password",
+  openPreview: "进入预览",
+  invalidPassword: "访问密码错误",
+  basicInfo: "基本信息",
+  meetingOverview: "会议概况",
+  creator: "创建人",
+  host: "主持人",
+  createdAt: "创建时间",
+  audioStatus: "音频状态",
+  participants: "人",
+  tags: "会议标签",
+  aiAnalysis: "AI 目录",
+  analysis: "会议分析",
+  previewExtra: "预览页仅读展示",
+  audioPlaybackWarning: "音频保存失败，可能影响回放。",
+  summaryOverview: "全文概要",
+  summaryEmpty: "暂无概要内容",
+  analysisChapters: "章节",
+  analysisSpeakers: "发言人",
+  analysisKeyPoints: "关键要点",
+  analysisTodos: "待办事项",
+  noChapterAnalysis: "暂无章节分析",
+  noSpeakerAnalysis: "暂无发言人分析",
+  noKeyPoints: "暂无关键要点",
+  noTodos: "暂无待办事项",
+  chapterFallback: "章节",
+  speakerFallback: "发言人",
+  speakerSummary: "发言概述",
+  keyPointFallback: "要点",
+  noChapterSummary: "暂无章节描述",
+  noSpeakerSummary: "暂无发言总结",
+  noKeyPointSummary: "暂无要点说明",
+  summarySection: "会议纪要",
+  fullSummary: "完整纪要",
+  noSummary: "暂无会议纪要",
+  transcriptSection: "会议转录",
+  transcriptTitle: "逐段转录",
+  noDuration: "暂无时长",
+  audioUnavailable: "音频文件不可用，仅展示转录内容。",
+  noTranscript: "暂无转录内容",
+  unknownSpeaker: "未知发言人",
   disclaimer: "智能内容由用户会议内容 + AI 模型生成，我们不对内容准确性和完整性做任何保证，亦不代表我们的观点或态度",
-  shareText: "\u6211\u5411\u4f60\u5206\u4eab\u4e86\u4e00\u4e2a\u4f1a\u8bae\u9884\u89c8\u94fe\u63a5",
-  audioSaved: "\u5df2\u4fdd\u5b58",
-  audioSaveFailed: "\u4fdd\u5b58\u5931\u8d25",
-  audioUploaded: "\u5df2\u4e0a\u4f20",
-  audioNotSaved: "\u672a\u4fdd\u5b58",
+  shareText: "我向你分享了一个会议预览链接",
+  audioSaved: "已保存",
+  audioSaveFailed: "保存失败",
+  audioUploaded: "已上传",
+  audioNotSaved: "未保存",
+  linkToTranscript: "关联原文",
+  noCatalog: "暂无 AI 目录",
 };
 
+type ChapterTranscriptLink = {
+  key: string;
+  title: string;
+  timeLabel: string;
+  transcriptIds: number[];
+  firstTranscriptId: number | null;
+  firstTranscriptStartTime: number | null;
+};
+
+function parseChapterTimeToMs(value?: string) {
+  const raw = String(value || "").trim();
+  if (!raw) return null;
+
+  const matched = raw.match(/(\d{1,2}:\d{2}(?::\d{2})?)/)?.[1];
+  if (!matched) return null;
+
+  const parts = matched.split(":").map((item) => Number(item));
+  if (parts.some((item) => Number.isNaN(item))) {
+    return null;
+  }
+
+  const totalSeconds =
+    parts.length === 3 ? parts[0] * 3600 + parts[1] * 60 + parts[2] : parts[0] * 60 + parts[1];
+
+  return totalSeconds * 1000;
+}
+
 const STATUS_META: Record<number, { label: string; className: string; hint: string }> = {
   1: { label: TEXT.statusTranscribing, className: "is-processing", hint: TEXT.hintTranscribing },
   2: { label: TEXT.statusSummarizing, className: "is-processing", hint: TEXT.hintSummarizing },
@@ -169,9 +200,10 @@ export default function MeetingPreview() {
   const transcriptItemRefs = useRef<Record<number, HTMLDivElement | null>>({});
   const [meeting, setMeeting] = useState<MeetingVO | null>(null);
   const [transcripts, setTranscripts] = useState<MeetingTranscriptVO[]>([]);
+  const [meetingChapters, setMeetingChapters] = useState<MeetingChapterVO[]>([]);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState("");
-  const [analysisTab, setAnalysisTab] = useState<AnalysisTab>("chapters");
+  const [analysisTab, setAnalysisTab] = useState<AnalysisTab>("speakers");
   const [pageTab, setPageTab] = useState<PreviewPageTab>("summary");
   const [activeTranscriptId, setActiveTranscriptId] = useState<number | null>(null);
   const [passwordRequired, setPasswordRequired] = useState(false);
@@ -183,6 +215,8 @@ export default function MeetingPreview() {
   const [audioDuration, setAudioDuration] = useState(0);
   const [audioPlaybackRate, setAudioPlaybackRate] = useState(1);
   const [isMetricsExpanded, setIsMetricsExpanded] = useState(false);
+  const [linkedTranscriptIds, setLinkedTranscriptIds] = useState<number[]>([]);
+  const [linkedChapterKey, setLinkedChapterKey] = useState<string | null>(null);
   const [isMobile, setIsMobile] = useState(() =>
     typeof window !== "undefined" ? window.matchMedia("(max-width: 767px)").matches : false,
   );
@@ -202,6 +236,7 @@ export default function MeetingPreview() {
       setError("");
         setMeeting(null);
         setTranscripts([]);
+        setMeetingChapters([]);
         setPasswordRequired(false);
         setPasswordVerified(false);
         setAccessPassword(presetAccessPassword);
@@ -228,6 +263,7 @@ export default function MeetingPreview() {
               }
               setMeeting(previewRes.data.data.meeting);
               setTranscripts(previewRes.data.data.transcripts || []);
+              setMeetingChapters(previewRes.data.data.chapters || []);
               setPasswordVerified(true);
               return;
             } catch (requestError: any) {
@@ -248,6 +284,7 @@ export default function MeetingPreview() {
 
         setMeeting(previewRes.data.data.meeting);
         setTranscripts(previewRes.data.data.transcripts || []);
+        setMeetingChapters(previewRes.data.data.chapters || []);
         setPasswordVerified(true);
       } catch (requestError: any) {
         if (!mounted) {
@@ -307,18 +344,6 @@ export default function MeetingPreview() {
     className: "is-warning",
     hint: TEXT.hintPending,
   };
-  const audioStatusLabel = useMemo(() => {
-    if (meeting?.audioSaveStatus === "SUCCESS") {
-      return TEXT.audioSaved;
-    }
-    if (meeting?.audioSaveStatus === "FAILED") {
-      return TEXT.audioSaveFailed;
-    }
-    if (meeting?.audioUrl) {
-      return TEXT.audioUploaded;
-    }
-    return TEXT.audioNotSaved;
-  }, [meeting?.audioSaveStatus, meeting?.audioUrl]);
   const shareUrl = typeof window !== "undefined" ? window.location.href : "";
   const participantCountValue =
     isMobile && transcriptSpeakers.length > 0 ? transcriptSpeakers.length : participants.length;
@@ -331,6 +356,66 @@ export default function MeetingPreview() {
     return 0;
   }, [transcripts]);
 
+  const catalogChapterLinks = useMemo<ChapterTranscriptLink[]>(() => {
+    const transcriptIdToIndex = new Map(transcripts.map((item, index) => [item.id, index]));
+    const sourceChapters: MeetingChapterVO[] = meetingChapters.length
+      ? meetingChapters
+      : analysis.chapters.map((item) => ({
+          title: item.title,
+          time: item.time,
+        }));
+
+    return sourceChapters.map((chapter, index) => {
+      let matchedTranscripts: MeetingTranscriptVO[] = [];
+      const sourceTranscriptIds = Array.isArray(chapter.sourceTranscriptIds)
+        ? chapter.sourceTranscriptIds
+            .map((item) => Number(item))
+            .filter((item) => Number.isFinite(item) && transcriptIdToIndex.has(item))
+        : [];
+
+      if (sourceTranscriptIds.length) {
+        matchedTranscripts = sourceTranscriptIds
+          .map((item) => transcripts[transcriptIdToIndex.get(item)!])
+          .filter(Boolean);
+      } else if (chapter.startTranscriptId && chapter.endTranscriptId) {
+        const startIndex = transcriptIdToIndex.get(Number(chapter.startTranscriptId));
+        const endIndex = transcriptIdToIndex.get(Number(chapter.endTranscriptId));
+        if (startIndex !== undefined && endIndex !== undefined) {
+          matchedTranscripts = transcripts.slice(Math.min(startIndex, endIndex), Math.max(startIndex, endIndex) + 1);
+        }
+      } else {
+        const startMs = typeof chapter.startTime === "number" ? chapter.startTime : parseChapterTimeToMs(chapter.time);
+        const nextChapterStartMs = sourceChapters
+          .slice(index + 1)
+          .map((item) => (typeof item.startTime === "number" ? item.startTime : parseChapterTimeToMs(item.time)))
+          .find((item): item is number => item !== null && startMs !== null && item > startMs);
+
+        if (startMs !== null) {
+          const firstTranscriptIndex = transcripts.findIndex((item) => item.endTime > startMs);
+          if (firstTranscriptIndex >= 0) {
+            const lastTranscriptIndex =
+              nextChapterStartMs === undefined
+                ? transcripts.length
+                : transcripts.findIndex((item) => item.startTime >= nextChapterStartMs);
+            matchedTranscripts = transcripts.slice(
+              firstTranscriptIndex,
+              lastTranscriptIndex >= 0 ? lastTranscriptIndex : transcripts.length,
+            );
+          }
+        }
+      }
+
+      return {
+        key: `${chapter.chapterNo ?? index}-${chapter.title || "chapter"}`,
+        title: chapter.title || `章节 ${index + 1}`,
+        timeLabel: chapter.time || "--:--",
+        transcriptIds: matchedTranscripts.map((item) => item.id),
+        firstTranscriptId: matchedTranscripts[0]?.id ?? null,
+        firstTranscriptStartTime: matchedTranscripts[0]?.startTime ?? null,
+      };
+    });
+  }, [analysis.chapters, meetingChapters, transcripts]);
+
   useEffect(() => {
     if (!activeTranscriptId) {
       return;
@@ -341,7 +426,8 @@ export default function MeetingPreview() {
       return;
     }
 
-    target.scrollIntoView({ behavior: "smooth", block: "nearest" });
+    // 使用 center 模式确保当前说话段落始终位于视口中央，避免被底部的浮动控件遮挡
+    target.scrollIntoView({ behavior: "smooth", block: "center" });
   }, [activeTranscriptId]);
 
   const handleTranscriptSeek = (item: MeetingTranscriptVO) => {
@@ -353,6 +439,25 @@ export default function MeetingPreview() {
     audioRef.current.play().catch(() => {});
   };
 
+  const handleLocateChapterTranscript = (index: number) => {
+    const link = catalogChapterLinks[index];
+    if (link && link.firstTranscriptId) {
+      setPageTab("transcript");
+      setLinkedTranscriptIds(link.transcriptIds);
+      setLinkedChapterKey(link.key);
+      setActiveTranscriptId(link.firstTranscriptId);
+
+      // 自动跳转并播放音频
+      if (audioRef.current && link.firstTranscriptStartTime !== null) {
+        audioRef.current.currentTime = Math.max(0, link.firstTranscriptStartTime / 1000);
+        audioRef.current.play().catch(() => {
+          // 部分浏览器（尤其是移动端）可能会拦截非直接交互触发的播放
+          // 但由于这是由用户点击目录项触发的，通常会被允许
+        });
+      }
+    }
+  };
+
   const toggleAudioPlayback = () => {
     if (!audioRef.current) return;
     if (audioPlaying) {
@@ -431,19 +536,6 @@ export default function MeetingPreview() {
     setAudioPlaying(false);
   };
 
-  const renderMeetingTitle = (title?: string) => {
-    const safeTitle = title || TEXT.untitledMeeting;
-    return safeTitle.split(/(\d+)/).map((part, index) =>
-      /\d+/.test(part) ? (
-        <span key={`${part}-${index}`} className="meeting-preview-title-number">
-          {part}
-        </span>
-      ) : (
-        <span key={`${part}-${index}`}>{part}</span>
-      ),
-    );
-  };
-
   const handlePasswordSubmit = async () => {
     if (!id) {
       return;
@@ -455,6 +547,7 @@ export default function MeetingPreview() {
       const previewRes = await getPublicMeetingPreview(Number(id), accessPassword.trim());
       setMeeting(previewRes.data.data.meeting);
       setTranscripts(previewRes.data.data.transcripts || []);
+      setMeetingChapters(previewRes.data.data.chapters || []);
       setPasswordVerified(true);
     } catch (requestError: any) {
       setPasswordError(requestError?.response?.data?.msg || requestError?.msg || TEXT.invalidPassword);
@@ -568,143 +661,24 @@ export default function MeetingPreview() {
     );
   }
 
-  const summaryTab = (
+  const summaryTabContent = (
     <div className="meeting-preview-tab-panel">
       <section className="meeting-preview-card meeting-preview-section">
-        <div className="meeting-preview-section-header">
-          <div>
-            <div className="meeting-preview-section-kicker">
-              <RobotOutlined />
-              {TEXT.aiAnalysis}
-            </div>
-            <h2 className="meeting-preview-section-title">{TEXT.analysis}</h2>
-          </div>
-          <div className="meeting-preview-section-extra">{TEXT.previewExtra}</div>
-        </div>
-
-        {meeting.audioSaveStatus === "FAILED" ? (
-          <Alert
-            className="meeting-preview-alert"
-            type="warning"
-            showIcon
-            message={meeting.audioSaveMessage || TEXT.audioPlaybackWarning}
-          />
-        ) : null}
-
-        {keywords.length > 0 ? (
-          <div className="meeting-preview-tags">
-            {keywords.map((item) => (
-              <span key={item} className="meeting-preview-tag">
-                {item}
-              </span>
-            ))}
-          </div>
-        ) : null}
-
-        <div className="meeting-preview-overview">
-          <div className="meeting-preview-overview-label">{TEXT.summaryOverview}</div>
-          <p className="meeting-preview-overview-copy">{analysis.overview || TEXT.summaryEmpty}</p>
-        </div>
-
-        <div className="meeting-preview-analysis-tabs">
-          {[
-            { label: TEXT.analysisChapters, value: "chapters" },
-            { label: TEXT.analysisSpeakers, value: "speakers" },
-            { label: TEXT.analysisKeyPoints, value: "actions" },
-            { label: TEXT.analysisTodos, value: "todos" },
-          ].map((tab) => (
-            <div
-              key={tab.value}
-              className={`meeting-preview-analysis-tab ${analysisTab === tab.value ? 'active' : ''}`}
-              onClick={() => setAnalysisTab(tab.value as AnalysisTab)}
-            >
-              {tab.label}
-            </div>
-          ))}
-        </div>
-
-        <div className="meeting-preview-analysis-panel">
-          {analysisTab === "chapters" ? (
-            analysis.chapters.length > 0 ? (
-              analysis.chapters.map((item, index) => (
-                <div className="meeting-preview-chapter" key={`${item.title || "chapter"}-${index}`}>
-                  <div className="meeting-preview-chapter-time">{item.time || "--:--"}</div>
-                  <div>
-                    <strong className="meeting-preview-item-title">{item.title || `${TEXT.chapterFallback} ${index + 1}`}</strong>
-                    <span className="meeting-preview-item-copy">{item.summary || TEXT.noChapterSummary}</span>
-                  </div>
+        <div className="meeting-preview-summary-box">
+          <div className="meeting-preview-summary-section">
+            <div className="meeting-preview-summary-section-title">关键词</div>
+            <div className="meeting-preview-record-tags">
+              {keywords.length ? (
+                keywords.map((item) => (
+                  <div key={item} className="meeting-preview-record-tag">
+                    <span>#{item}</span>
                   </div>
                 ))
               ) : (
-              <div className="meeting-preview-list-empty">{TEXT.noChapterAnalysis}</div>
-            )
-          ) : null}
-
-          {analysisTab === "speakers" ? (
-            analysis.speakerSummaries.length > 0 ? (
-              analysis.speakerSummaries.map((item, index) => (
-                <div className="meeting-preview-speaker-card" key={`${item.speaker || "speaker"}-${index}`}>
-                  <div className="meeting-preview-speaker-head">
-                    <div className="meeting-preview-speaker-avatar">{(item.speaker || "S").slice(0, 1)}</div>
-                    <div>
-                      <div className="meeting-preview-speaker-name">{item.speaker || `${TEXT.speakerFallback} ${index + 1}`}</div>
-                      <div className="meeting-preview-speaker-role">{TEXT.speakerSummary}</div>
+                <span className="meeting-preview-keywords-empty">暂无关键词</span>
+              )}
             </div>
           </div>
-                  <div className="meeting-preview-item-copy">{item.summary || TEXT.noSpeakerSummary}</div>
-                </div>
-              ))
-            ) : (
-              <div className="meeting-preview-list-empty">{TEXT.noSpeakerAnalysis}</div>
-            )
-          ) : null}
-
-          {analysisTab === "actions" ? (
-            analysis.keyPoints.length > 0 ? (
-              analysis.keyPoints.map((item, index) => (
-                <div className="meeting-preview-keypoint" key={`${item.title || "key-point"}-${index}`}>
-                  <div className="meeting-preview-keypoint-index">{String(index + 1).padStart(2, "0")}</div>
-                  <div>
-                    <strong className="meeting-preview-item-title">{item.title || `${TEXT.keyPointFallback} ${index + 1}`}</strong>
-                    <span className="meeting-preview-item-copy">{item.summary || TEXT.noKeyPointSummary}</span>
-                    {(item.speaker || item.time) ? (
-                      <div className="meeting-preview-item-meta">
-                        {item.speaker ? <span className="meeting-preview-meta-pill">{item.speaker}</span> : null}
-                        {item.time ? <span className="meeting-preview-meta-pill">{item.time}</span> : null}
-                      </div>
-                    ) : null}
-                  </div>
-                </div>
-              ))
-            ) : (
-              <div className="meeting-preview-list-empty">{TEXT.noKeyPoints}</div>
-            )
-          ) : null}
-
-          {analysisTab === "todos" ? (
-            analysis.todos.length > 0 ? (
-              analysis.todos.map((item, index) => (
-                <div className="meeting-preview-todo" key={`${item}-${index}`}>
-                  <span className="meeting-preview-todo-dot" />
-                  <span className="meeting-preview-item-copy">{item}</span>
-                </div>
-              ))
-            ) : (
-              <div className="meeting-preview-list-empty">{TEXT.noTodos}</div>
-            )
-          ) : null}
-        </div>
-      </section>
-
-      <section className="meeting-preview-card meeting-preview-section">
-        <div className="meeting-preview-section-header">
-          <div>
-            <div className="meeting-preview-section-kicker">
-              <FileTextOutlined />
-              {TEXT.summarySection}
-            </div>
-            <h2 className="meeting-preview-section-title">{TEXT.fullSummary}</h2>
-          </div>
         </div>
 
         <div className="meeting-preview-markdown">
@@ -718,15 +692,68 @@ export default function MeetingPreview() {
     </div>
   );
 
-  const transcriptTab = (
+  const catalogTabContent = (
     <div className="meeting-preview-tab-panel">
       <section className="meeting-preview-card meeting-preview-section">
         <div className="meeting-preview-section-header">
           <div>
-            <div className="meeting-preview-section-kicker">
-              <AudioOutlined />
-              {TEXT.transcriptSection}
+            {/*<div className="meeting-preview-section-kicker">*/}
+            {/*  <RobotOutlined />*/}
+            {/*  {TEXT.aiAnalysis}*/}
+            {/*</div>*/}
+            <h2 className="meeting-preview-section-title">{TEXT.pageCatalog}</h2>
           </div>
+        </div>
+
+        <div className="meeting-preview-catalog-list">
+          {catalogChapterLinks.length ? (
+            catalogChapterLinks.map((chapter, index) => (
+              <div
+                key={chapter.key}
+                className={`meeting-preview-catalog-item-container ${linkedChapterKey === chapter.key ? 'active' : ''}`}
+              >
+                <div className="meeting-preview-catalog-timeline-axis">
+                  <div className="meeting-preview-catalog-timeline-dot" />
+                  <div className="meeting-preview-catalog-timeline-line" />
+                </div>
+                <div 
+                  className="meeting-preview-catalog-item-card"
+                  onClick={() => handleLocateChapterTranscript(index)}
+                >
+                  <div className="meeting-preview-catalog-item-time">{chapter.timeLabel}</div>
+                  <div className="meeting-preview-catalog-item-title-row">
+                    <div className="meeting-preview-catalog-item-title">{chapter.title}</div>
+                    <button
+                      type="button"
+                      className="meeting-preview-catalog-item-link"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleLocateChapterTranscript(index);
+                      }}
+                    >
+                      <LinkOutlined /> {TEXT.linkToTranscript}
+                    </button>
+                  </div>
+                </div>
+              </div>
+            ))
+          ) : (
+            <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description={TEXT.noCatalog} />
+          )}
+        </div>
+      </section>
+    </div>
+  );
+
+  const transcriptTabContent = (
+    <div className="meeting-preview-tab-panel">
+      <section className="meeting-preview-card meeting-preview-section">
+        <div className="meeting-preview-section-header">
+          <div>
+            {/*<div className="meeting-preview-section-kicker">*/}
+            {/*  <AudioOutlined />*/}
+            {/*  {TEXT.transcriptSection}*/}
+            {/*</div>*/}
             <h2 className="meeting-preview-section-title">{TEXT.transcriptTitle}</h2>
           </div>
           <div className="meeting-preview-section-extra">
@@ -748,16 +775,26 @@ export default function MeetingPreview() {
           {transcripts.length > 0 ? (
             transcripts.map((item) => {
               const speakerKey = item.speakerName || item.speakerLabel || item.speakerId || "speaker";
+              const isLinked = linkedTranscriptIds.includes(item.id);
+              const isActive = activeTranscriptId === item.id;
+              
               return (
                 <div
                   key={item.id}
                   ref={(node) => {
                     transcriptItemRefs.current[item.id] = node;
                   }}
-                  className={`meeting-preview-transcript-item ${activeTranscriptId === item.id ? "is-active" : ""}`}
-                  onClick={() => handleTranscriptSeek(item)}
+                  className={`meeting-preview-transcript-item ${isActive ? "is-active" : ""} ${isLinked ? "is-linked" : ""}`}
+                  onClick={() => {
+                    handleTranscriptSeek(item);
+                    setLinkedTranscriptIds([]); // Clear linked highlight on manual seek
+                    setLinkedChapterKey(null);
+                  }}
+                >
+                  <div
+                    className="meeting-preview-transcript-avatar"
+                    style={{ backgroundColor: transcriptColorSeed(speakerKey) }}
                   >
-                  <div className="meeting-preview-transcript-avatar">
                     {(speakerKey || "S").slice(0, 1)}
                   </div>
                   <div className="meeting-preview-transcript-content">
@@ -782,127 +819,158 @@ export default function MeetingPreview() {
     </div>
   );
 
+  const formatTotalDuration = (ms: number) => {
+    const totalSeconds = Math.floor(ms / 1000);
+    const hours = Math.floor(totalSeconds / 3600);
+    const minutes = Math.floor((totalSeconds % 3600) / 60);
+    const seconds = totalSeconds % 60;
+
+    if (hours > 0) {
+      return `${hours.toString().padStart(2, "0")}:${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}`;
+    }
+    return `${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}`;
+  };
+
   return (
-    <div className="meeting-preview-page">
+    <div className={`meeting-preview-page ${isMobile ? "is-mobile" : "is-desktop"}`}>
+      <div className="meeting-preview-container">
         <div className="meeting-preview-shell">
-        <section className="meeting-preview-card meeting-preview-hero">
-          <div className="meeting-preview-eyebrow">
-            <div className="meeting-preview-eyebrow-label">
-              <FileTextOutlined />
-              {TEXT.previewLabel}
+          {/* Header Title Section */}
+          <div className="meeting-preview-top-hero">
+            <div className="meeting-preview-hero-logo">
+              <RobotOutlined />
+            </div>
+            <div className="meeting-preview-hero-content">
+              <h1 className="meeting-preview-hero-title">{meeting.title || TEXT.untitledMeeting}</h1>
+              <div className="meeting-preview-hero-meta">
+                <span className={`meeting-preview-status-tag ${statusMeta.className}`}>
+                  {statusMeta.label}
+                </span>
+                {/*<span className="meeting-preview-hero-id">ID: {meeting.id}</span>*/}
+              </div>
             </div>
-            <span className={`meeting-preview-status ${statusMeta.className}`}>{statusMeta.label}</span>
           </div>
 
-          <div className="meeting-preview-hero-toolbar">
-            <div>
-              <h1 className="meeting-preview-title">{renderMeetingTitle(meeting.title)}</h1>
-              <p className="meeting-preview-subtitle">{statusMeta.hint}</p>
+          {/* Collapsible Basic Info Section */}
+          <div className="meeting-preview-collapsible-section">
+            <div 
+              className="meeting-preview-collapsible-trigger"
+              onClick={() => setIsMetricsExpanded(!isMetricsExpanded)}
+            >
+              <div className="trigger-left">
+                <FileTextOutlined />
+                <span>{TEXT.basicInfo}</span>
               </div>
-            <div className="meeting-preview-hero-actions">
-              <Button icon={<CopyOutlined />} onClick={handleCopyLink}>
-                {TEXT.copyLink}
-              </Button>
-              <Button type="primary" icon={<ShareAltOutlined />} onClick={handleShareNow}>
+              <div className="trigger-right">
+                {isMetricsExpanded ? <UpOutlined /> : <DownOutlined />}
+              </div>
+            </div>
+            
+            <div className={`meeting-preview-collapsible-content ${isMetricsExpanded ? 'is-expanded' : ''}`}>
+              <div className="meeting-preview-metrics-grid">
+                <div className="metric-item">
+                  <div className="metric-label">{TEXT.meetingTime}</div>
+                  <div className="metric-value">
+                    <CalendarOutlined style={{ marginRight: 8, color: 'var(--primary-blue)' }} />
+                    {meeting.meetingTime ? dayjs(meeting.meetingTime).format("YYYY-MM-DD HH:mm") : TEXT.notSet}
+                  </div>
+                </div>
+                <div className="metric-item">
+                  <div className="metric-label">{TEXT.hostCreator}</div>
+                  <div className="metric-value">
+                    <UserOutlined style={{ marginRight: 8, color: 'var(--primary-blue)' }} />
+                    {meeting.creatorName || TEXT.notSet}
+                  </div>
+                </div>
+                <div className="metric-item">
+                  <div className="metric-label">{TEXT.participantsCount}</div>
+                  <div className="metric-value">
+                    <TeamOutlined style={{ marginRight: 8, color: 'var(--primary-blue)' }} />
+                    {participantCountValue} {TEXT.participants}
+                  </div>
+                </div>
+                <div className="metric-item">
+                  <div className="metric-label">会议时长</div>
+                  <div className="metric-value">
+                    <ClockCircleOutlined style={{ marginRight: 8, color: 'var(--primary-blue)' }} />
+                    {meetingDuration > 0 ? formatTotalDuration(meetingDuration) : TEXT.notSet}
+                  </div>
+                </div>
+                {tags.length > 0 && (
+                  <div className="metric-item metric-item-full">
+                    <div className="metric-label">{TEXT.tags}</div>
+                    <div className="metric-tags">
+                      {tags.map(tag => (
+                        <span key={tag} className="metric-tag">#{tag}</span>
+                      ))}
+                    </div>
+                  </div>
+                )}
+              </div>
+            </div>
+          </div>
+
+          {/* Sharing Buttons Bar */}
+          <div className="meeting-preview-share-bar">
+            <Button 
+              type="primary" 
+              size="large"
+              icon={<ShareAltOutlined />} 
+              onClick={handleShareNow}
+              className="share-btn-primary"
+            >
               {TEXT.shareNow}
             </Button>
-            </div>
-          </div>
-
-          <div style={{ display: isMetricsExpanded ? 'block' : 'none' }}>
-            <div className="meeting-preview-metrics">
-              <div className="meeting-preview-metric">
-                <span className="meeting-preview-metric-label">{TEXT.meetingTime}</span>
-                <span className="meeting-preview-metric-value">
-                  {meeting.meetingTime ? dayjs(meeting.meetingTime).format("YYYY.MM.DD HH:mm") : TEXT.notSet}
-                </span>
-              </div>
-              <div className="meeting-preview-metric">
-                <span className="meeting-preview-metric-label">{TEXT.createdAt}</span>
-                <span className="meeting-preview-metric-value">
-                  {meeting.createdAt ? dayjs(meeting.createdAt).format("YYYY.MM.DD HH:mm") : TEXT.notSet}
-                </span>
-              </div>
-              <div className="meeting-preview-metric">
-                <span className="meeting-preview-metric-label">{TEXT.creator}</span>
-                <span className="meeting-preview-metric-value">{meeting.creatorName || TEXT.notSet}</span>
-              </div>
-              <div className="meeting-preview-metric">
-                <span className="meeting-preview-metric-label">{TEXT.host}</span>
-                <span className="meeting-preview-metric-value">{meeting.hostName || TEXT.notSet}</span>
-              </div>
-              <div className="meeting-preview-metric">
-                <span className="meeting-preview-metric-label">{TEXT.participantsCount}</span>
-                <span className="meeting-preview-metric-value">{participantCountValue || TEXT.notFilled}</span>
-              </div>
-              <div className="meeting-preview-metric">
-                <span className="meeting-preview-metric-label">会议时长</span>
-                <span className="meeting-preview-metric-value">{meetingDuration > 0 ? formatDurationRange(0, meetingDuration).split(' - ')[1] : TEXT.noDuration}</span>
-              </div>
-            </div>
-
-            {participants.length > 0 ? (
-              <div className="meeting-preview-overview" style={{ marginTop: 20 }}>
-                <div className="meeting-preview-overview-label">{TEXT.participants}</div>
-                <div className="meeting-preview-tags">
-                  {participants.map((item) => (
-                    <span key={item} className="meeting-preview-tag">
-                      <TeamOutlined style={{ marginRight: 8 }} />
-                      {item}
-                    </span>
-                  ))}
-                </div>
-              </div>
-            ) : null}
-
-            {tags.length > 0 ? (
-              <div className="meeting-preview-overview" style={{ marginTop: participants.length > 0 ? 12 : 20 }}>
-                <div className="meeting-preview-overview-label">{TEXT.tags}</div>
-                <div className="meeting-preview-tags">
-                  {tags.map((item) => (
-                    <Tag key={item} bordered={false} className="meeting-preview-tag">
-                      {item}
-                    </Tag>
-                  ))}
-                </div>
-              </div>
-            ) : null}
-          </div>
-
-          <div style={{ textAlign: 'center', marginTop: 12 }}>
             <Button 
-              type="text" 
-              block
-              onClick={() => setIsMetricsExpanded(!isMetricsExpanded)}
-              style={{ color: 'var(--preview-muted)', height: 40, backgroundColor: 'rgba(0, 0, 0, 0.02)' }}
-              icon={isMetricsExpanded ? <UpOutlined /> : <DownOutlined />}
+              size="large"
+              icon={<CopyOutlined />} 
+              onClick={handleCopyLink}
+              className="share-btn-ghost"
             >
-              {isMetricsExpanded ? '收起基础信息' : '展开基础信息'} 
+              {TEXT.copyLink}
             </Button>
           </div>
-        </section>
 
-        <div className="meeting-preview-panels">
-          <section className="meeting-preview-card meeting-preview-section">
+          <div className="meeting-preview-layout-full">
+            {/* Main Content Area */}
+            <main className="meeting-preview-main">
+              <div className="meeting-preview-content-card">
+                <div className="meeting-preview-tabs-container">
                   <Tabs
-              className="meeting-preview-page-tabs"
                     activeKey={pageTab}
                     onChange={(key) => setPageTab(key as PreviewPageTab)}
                     items={[
-                { key: "summary", label: TEXT.pageSummary, children: summaryTab },
-                { key: "transcript", label: TEXT.pageTranscript, children: transcriptTab },
+                      { key: "summary", label: TEXT.pageSummary },
+                      { key: "catalog", label: TEXT.pageCatalog },
+                      { key: "transcript", label: TEXT.pageTranscript },
                     ]}
                   />
-          </section>
                 </div>
 
+                <div className="meeting-preview-tab-content">
+                  {pageTab === "summary" ? summaryTabContent : null}
+                  {pageTab === "catalog" ? catalogTabContent : null}
+                  {pageTab === "transcript" ? transcriptTabContent : null}
+                </div>
+              </div>
+            </main>
+          </div>
+
+          <div className="meeting-preview-footer">
             <div className="meeting-preview-disclaimer">
-          <RobotOutlined style={{ marginRight: 8 }} />
-          {TEXT.disclaimer}
+              <RobotOutlined />
+              <span>{TEXT.disclaimer}</span>
+            </div>
+          </div>
         </div>
       </div>
 
+      {/* Floating Audio Player - Permanent mount, visibility controlled */}
       {playbackAudioUrl && (
+        <div 
+          className="meeting-preview-audio-player-inline"
+          style={{ display: pageTab === "transcript" ? "flex" : "none" }}
+        >
           <audio
             ref={audioRef}
             onTimeUpdate={handleAudioTimeUpdate}
@@ -911,27 +979,20 @@ export default function MeetingPreview() {
             onEnded={handleAudioEnded}
             onLoadedMetadata={handleAudioLoadedMetadata}
             onError={handleAudioError}
-          style={{ display: 'none' }}
+            style={{ display: "none" }}
             preload="auto"
           >
             <source src={playbackAudioUrl} type={resolveAudioMimeType(playbackAudioUrl)} />
           </audio>
-      )}
 
-      {playbackAudioUrl && pageTab === 'transcript' ? (
-        <>
-          <div style={{ height: 100, flexShrink: 0, pointerEvents: 'none' }} />
-          <div className="transcript-player">
-            <button type="button" className="player-main-btn" onClick={toggleAudioPlayback} aria-label="toggle-audio">
+          <div className="audio-player-content">
+            <button type="button" className="audio-play-btn" onClick={toggleAudioPlayback}>
               {audioPlaying ? <PauseOutlined /> : <CaretRightFilled />}
             </button>
-            <div className="player-progress-shell">
-              <div className="player-time-row">
-                <span>{formatPlayerTime(audioCurrentTime)}</span>
-                <span>{formatPlayerTime(audioDuration)}</span>
-              </div>
+            <div className="audio-progress-container">
+              <div className="audio-time">{formatPlayerTime(audioCurrentTime)}</div>
               <input
-                className="player-range"
+                className="audio-range"
                 type="range"
                 min={0}
                 max={audioDuration || 0}
@@ -940,14 +1001,14 @@ export default function MeetingPreview() {
                 onChange={handleAudioProgressChange}
                 style={{ backgroundSize: `${audioDuration ? (audioCurrentTime / audioDuration) * 100 : 0}% 100%` }}
               />
+              <div className="audio-time">{formatPlayerTime(audioDuration)}</div>
             </div>
-            <button type="button" className="player-ghost-btn" onClick={cyclePlaybackRate}>
-              <FastForwardOutlined />
+            <button type="button" className="audio-speed-btn" onClick={cyclePlaybackRate}>
               {audioPlaybackRate}x
             </button>
           </div>
-        </>
-      ) : null}
+        </div>
+      )}
     </div>
   );
 }