diff --git a/src/main/resources/static/components/plugins/sysFilePreview/PdfIndex.vue b/src/main/resources/static/components/plugins/sysFilePreview/PdfIndex.vue
index 3708c58..1dd1c21 100644
--- a/src/main/resources/static/components/plugins/sysFilePreview/PdfIndex.vue
+++ b/src/main/resources/static/components/plugins/sysFilePreview/PdfIndex.vue
@@ -21,37 +21,61 @@ module.exports = {
         },
     },
     watch: {
-
+        content: {
+            immediate: true,
+            handler() {
+                // 详情数据通常在组件创建后异步回填，每次内容变化都重新识别并渲染 PDF。
+                this.init()
+            }
+        }
     },
     data() {
         return {
             pdf: true,
             pdfObj: null,
+            previewVersion: 0,
         }
     },
     methods: {
         init() {
+            this.destroyPdf()
+            const currentVersion = ++this.previewVersion
             try {
-                const parser = new DOMParser();
-                const doc = parser.parseFromString(this.content, 'text/html');
-                const link = doc.querySelector('a');
-                const href = link.getAttribute('href');
-                if(!href) {
+                const parser = new DOMParser()
+                const doc = parser.parseFromString(this.content || '', 'text/html')
+                const link = doc.querySelector('a')
+                const href = link ? link.getAttribute('href') : ''
+                if (!href) {
                     this.pdf = false
                     return
                 }
+
+                const parsedUrl = new URL(href, window.location.origin)
+                const linkText = (link.textContent || '').trim().toLowerCase()
+                const isPdf = linkText.endsWith('.pdf') || parsedUrl.pathname.toLowerCase().endsWith('.pdf')
+                if (!isPdf) {
+                    this.pdf = false
+                    return
+                }
+
+                // 系统上传文件可能保存了其他环境的绝对域名，内部下载地址统一使用当前站点。
+                const pdfUrl = parsedUrl.pathname === '/platform/sys/file/download'
+                    ? parsedUrl.pathname + parsedUrl.search : parsedUrl.href
+                this.pdf = true
                 this.$nextTick(() => {
+                    if (currentVersion !== this.previewVersion || !this.pdf) return
                     this.pdfObj = new Pdfh5('#pdf-container', {
-                        pdfurl: href,
-                    });
-                    this.pdfObj.on("complete", function () {
-                        const elements = document.querySelectorAll('[class*="canvasImg"]')
-                        let classArray = []
+                        pdfurl: pdfUrl,
+                    })
+                    this.pdfObj.on("complete", () => {
+                        if (currentVersion !== this.previewVersion) return
+                        const elements = this.$el.querySelectorAll('[class*="canvasImg"]')
+                        const classArray = []
                         elements.forEach(element => {
                             classArray.push(element.getAttribute('src'))
                         })
                         elements.forEach((element,index) => {
-                            element.addEventListener('click', function() {
+                            element.addEventListener('click', () => {
                                 vant.ImagePreview({
                                     images: classArray,
                                     startPosition: index,
@@ -65,9 +89,17 @@ module.exports = {
                 this.pdf = false
             }
         },
+        destroyPdf() {
+            // 内容切换或组件销毁时释放 PDF 渲染实例，避免重复打开详情产生资源残留。
+            if (this.pdfObj && this.pdfObj.destroy) {
+                this.pdfObj.destroy()
+            }
+            this.pdfObj = null
+        },
     },
-    created() {
-        this.init()
+    beforeDestroy() {
+        this.previewVersion += 1
+        this.destroyPdf()
     },
 }
 </script>
diff --git a/src/main/resources/views/platform/zhgh/activity/trainSignUp/apply/index.html b/src/main/resources/views/platform/zhgh/activity/trainSignUp/apply/index.html
index a7c74d8..12dda84 100644
--- a/src/main/resources/views/platform/zhgh/activity/trainSignUp/apply/index.html
+++ b/src/main/resources/views/platform/zhgh/activity/trainSignUp/apply/index.html
@@ -3,7 +3,175 @@ layout("/layouts/platform.html"){
 #-->
 
 <style>
-
+    .activity-introduce-dialog {
+        max-width: calc(100vw - 40px);
+        border-radius: 8px;
+        overflow: hidden;
+    }
+    .activity-introduce-dialog .el-dialog__header {
+        padding: 20px 24px;
+        border-bottom: 1px solid #ebeef5;
+    }
+    .activity-introduce-dialog .el-dialog__title {
+        color: #303133;
+        font-size: 18px;
+        font-weight: 600;
+    }
+    .activity-introduce-dialog .el-dialog__body {
+        padding: 0;
+    }
+    .activity-introduce-dialog .el-dialog__footer {
+        padding: 16px 24px;
+        border-top: 1px solid #ebeef5;
+    }
+    .activity-introduce-layout {
+        display: flex;
+        height: calc(86vh - 128px);
+        min-height: 520px;
+        max-height: 650px;
+        overflow: hidden;
+    }
+    .activity-introduce-summary {
+        box-sizing: border-box;
+        width: 280px;
+        flex-shrink: 0;
+        padding: 24px;
+        background: #f7faff;
+        border-right: 1px solid #ebeef5;
+    }
+    .activity-introduce-cover {
+        display: block;
+        width: 100%;
+        height: 152px;
+        overflow: hidden;
+        border-radius: 6px;
+        background: #eef3f8;
+    }
+    .activity-introduce-cover-empty {
+        display: flex;
+        height: 100%;
+        align-items: center;
+        justify-content: center;
+        color: #a8abb2;
+        font-size: 40px;
+    }
+    .activity-introduce-name {
+        margin: 16px 0 18px;
+        color: #303133;
+        font-size: 22px;
+        font-weight: 600;
+        line-height: 1.4;
+    }
+    .activity-introduce-meta {
+        padding-bottom: 20px;
+        border-bottom: 1px solid #e4e7ed;
+    }
+    .activity-introduce-meta-item {
+        display: flex;
+        margin-bottom: 16px;
+        color: #606266;
+        font-size: 13px;
+        line-height: 1.7;
+    }
+    .activity-introduce-meta-item:last-child {
+        margin-bottom: 0;
+    }
+    .activity-introduce-meta-item > i {
+        width: 20px;
+        margin-top: 4px;
+        color: #909399;
+        font-size: 16px;
+    }
+    .activity-introduce-meta-label {
+        color: #909399;
+    }
+    .activity-introduce-steps {
+        height: 115px;
+        margin-top: 22px;
+    }
+    .activity-introduce-steps .el-step__title {
+        font-size: 14px;
+    }
+    .activity-introduce-main {
+        display: flex;
+        min-width: 0;
+        flex: 1;
+        flex-direction: column;
+        padding: 24px;
+    }
+    .activity-introduce-main-title {
+        margin-bottom: 16px;
+        padding-left: 12px;
+        border-left: 4px solid var(--color-primary);
+        color: #303133;
+        font-size: 20px;
+        font-weight: 600;
+        line-height: 24px;
+    }
+    .activity-introduce-file {
+        display: flex;
+        height: 38px;
+        flex-shrink: 0;
+        align-items: center;
+        padding: 0 14px;
+        border-radius: 4px;
+        background: #f2f4f7;
+        color: #606266;
+        font-size: 13px;
+    }
+    .activity-introduce-file i {
+        margin-right: 8px;
+        color: #f56c6c;
+        font-size: 16px;
+    }
+    .activity-introduce-preview {
+        min-height: 0;
+        flex: 1;
+        margin-top: 14px;
+        overflow: hidden;
+        background: #eef1f5;
+    }
+    .activity-introduce-pdf {
+        width: 100%;
+        height: 100%;
+        border: 0;
+    }
+    .activity-introduce-content {
+        box-sizing: border-box;
+        height: 100%;
+        overflow-y: auto;
+        padding: 28px 36px;
+        background: #fff;
+        color: #303133;
+        font-size: 14px;
+        line-height: 1.8;
+    }
+    .activity-introduce-empty {
+        display: flex;
+        height: 100%;
+        align-items: center;
+        justify-content: center;
+        color: #909399;
+    }
+    .activity-introduce-footer {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+    }
+    .activity-introduce-footer-actions {
+        display: flex;
+        gap: 12px;
+    }
+    .activity-introduce-footer-actions .el-button {
+        min-width: 110px;
+    }
+    .activity-introduce-footer-actions .el-button--primary {
+        min-width: 180px;
+    }
+    .activity-introduce-countdown {
+        color: #e6a23c;
+        font-size: 13px;
+    }
 </style>
 
 <div id="app" v-cloak>
@@ -60,7 +228,7 @@ layout("/layouts/platform.html"){
                     <template v-slot="{row}">
                         <template v-if="$moment().isBefore($moment(row.activitySignUpEndTime))">
                             <el-button @click="onView(row)" size="mini" type="primary">查看介绍</el-button>
-                            <el-button @click="onOpen(row)" size="mini" type="primary">去报名</el-button>
+                            <el-button @click="onView(row)" size="mini" type="primary">去报名</el-button>
                         </template>
                         <template v-if="$moment().isAfter($moment(row.activitySignUpEndTime))">
                             <el-button size="mini" type="info">已结束</el-button>
@@ -76,40 +244,101 @@ layout("/layouts/platform.html"){
         </template>
     </guava>
 
-    <el-dialog title="详细信息" :visible.sync="infoVisible" width="60%">
+    <el-dialog title="活动介绍"
+               custom-class="activity-introduce-dialog"
+               :close-on-click-modal="false"
+               :visible.sync="infoVisible"
+               top="7vh"
+               width="1120px">
+        <div class="activity-introduce-layout">
+            <aside class="activity-introduce-summary">
+                <el-image class="activity-introduce-cover" :src="infoRow.cover" fit="cover">
+                    <div slot="error" class="activity-introduce-cover-empty">
+                        <i class="el-icon-picture-outline"></i>
+                    </div>
+                </el-image>
+                <div class="activity-introduce-name">{{infoRow.activityName || '品牌活动'}}</div>
+                <div class="activity-introduce-meta">
+                    <div class="activity-introduce-meta-item">
+                        <i class="el-icon-date"></i>
+                        <div>
+                            <div class="activity-introduce-meta-label">报名时间</div>
+                            <div>{{$moment(infoRow.activitySignUpStartTime).format('YYYY-MM-DD HH:mm')}}</div>
+                            <div>至 {{$moment(infoRow.activitySignUpEndTime).format('YYYY-MM-DD HH:mm')}}</div>
+                        </div>
+                    </div>
+                    <div class="activity-introduce-meta-item">
+                        <i class="el-icon-time"></i>
+                        <div>
+                            <div class="activity-introduce-meta-label">活动时间</div>
+                            <div>{{$moment(infoRow.activityStartTime).format('YYYY-MM-DD HH:mm')}}</div>
+                            <div>至 {{$moment(infoRow.activityEndTime).format('YYYY-MM-DD HH:mm')}}</div>
+                        </div>
+                    </div>
+                    <div class="activity-introduce-meta-item">
+                        <i class="el-icon-user"></i>
+                        <div>
+                            <div class="activity-introduce-meta-label">面向对象</div>
+                            <div>{{infoRow.activityGroupName || '全体工会会员'}}</div>
+                        </div>
+                    </div>
+                </div>
+                <el-steps class="activity-introduce-steps" direction="vertical" :active="0">
+                    <el-step title="阅读活动介绍"></el-step>
+                    <el-step title="选择报名项目"></el-step>
+                </el-steps>
+            </aside>
 
-        <activity-info ref="infoRef"></activity-info>
+            <section class="activity-introduce-main">
+                <div class="activity-introduce-main-title">报名须知</div>
+                <div class="activity-introduce-file">
+                    <i :class="activityIntroducePdfUrl ? 'fa fa-file-pdf-o' : 'fa fa-file-text-o'"></i>
+                    <span>{{activityIntroduceFileName}}</span>
+                    <span v-if="activityIntroducePageCount">&nbsp;·&nbsp;{{activityIntroducePageCount}}页</span>
+                </div>
+                <div class="activity-introduce-preview">
+                    <iframe v-if="activityIntroducePdfUrl"
+                            ref="activityPdfFrame"
+                            class="activity-introduce-pdf"
+                            @load="styleActivityPdf"
+                            :src="activityIntroducePdfUrl"></iframe>
+                    <div v-else-if="infoRow.introduce"
+                         class="activity-introduce-content"
+                         v-html="infoRow.introduce"></div>
+                    <div v-else class="activity-introduce-empty">暂无活动介绍</div>
+                </div>
+            </section>
+        </div>
 
-        <span slot="footer" class="dialog-footer">
-            <el-statistic
-                v-if="time < 0"
-                format="DD 天 HH 时 mm 分钟 ss 秒"
-                :value="new Date(infoRow.activitySignUpStartTime)"
-                time-indices
-                title="距离开始："
-                @finish="time = 0"
-            >
-            </el-statistic>
-            <template v-else>
-                 <el-button @click="infoVisible = false">取消</el-button>
-                 <el-button type="primary" @click="onOpen(infoRow)" :disabled="time < 0">
-                     去报名
-                 </el-button>
-            </template>
-        </span>
+        <div slot="footer" class="activity-introduce-footer">
+            <div>
+                <el-checkbox v-model="activityIntroduceConfirmed" :disabled="time < 0">
+                    我已阅读并知晓活动说明
+                </el-checkbox>
+                <span class="activity-introduce-countdown" v-if="time < 0">
+                    报名尚未开始
+                </span>
+            </div>
+            <div class="activity-introduce-footer-actions">
+                <el-button @click="closeIntroduce">暂不报名</el-button>
+                <el-button type="primary"
+                           :disabled="time < 0 || !activityIntroduceConfirmed"
+                           @click="onOpen(infoRow)">
+                    确定并选择报名项目
+                </el-button>
+            </div>
+        </div>
     </el-dialog>
 
 </div>
 
 <script nonce="${cspNonce!}">
     <!--#include('courseList.js'){}#-->
-    <!--#include('../manage/info.js'){}#-->
     new Vue({
         el: "#app",
         mixins: [initTableMixins],
         components: {
             "course-list": courseList,
-            "activity-info": info,
         },
         data() {
             return {
@@ -126,25 +355,89 @@ layout("/layouts/platform.html"){
                 time: 0,
                 infoRow: {},
                 infoVisible: false,
+                activityIntroducePdfUrl: '',
+                activityIntroduceFileName: '活动介绍',
+                activityIntroducePageCount: null,
+                activityIntroduceConfirmed: false,
 
                 id: GetQueryString("id"),
             }
         },
         methods: {
             onView(row) {
-                this.infoRow = row
-                this.time = this.$moment().diff(this.$moment(row.activitySignUpStartTime), 'milliseconds')
-                this.infoVisible = true
-                this.$nextTick(() => {
-                    this.$refs.infoRef.initData(row.id)
-                })
+                const introduce = this.resolveActivityIntroduce(row.introduce)
+                this.$set(this.$data, 'infoRow', row)
+                this.$set(this.$data, 'activityIntroducePdfUrl', introduce.pdfUrl)
+                this.$set(this.$data, 'activityIntroduceFileName', introduce.fileName)
+                this.$set(this.$data, 'activityIntroducePageCount', null)
+                this.$set(this.$data, 'activityIntroduceConfirmed', false)
+                this.$set(this.$data, 'time', this.$moment().diff(this.$moment(row.activitySignUpStartTime), 'milliseconds'))
+                this.$set(this.$data, 'infoVisible', true)
+            },
+            resolveActivityIntroduce(introduce) {
+                try {
+                    const parser = new DOMParser()
+                    const doc = parser.parseFromString(introduce || '', 'text/html')
+                    const link = doc.querySelector('a')
+                    const href = link ? link.getAttribute('href') : ''
+                    if (!href) return {pdfUrl: '', fileName: '活动介绍'}
+
+                    const parsedUrl = new URL(href, window.location.origin)
+                    const linkText = (link.textContent || '').trim().toLowerCase()
+                    const isPdf = linkText.endsWith('.pdf') || parsedUrl.pathname.toLowerCase().endsWith('.pdf')
+                    if (!isPdf) return {pdfUrl: '', fileName: '活动介绍'}
+
+                    // 系统内部文件使用当前站点地址，避免历史环境域名导致 PDF 无法加载。
+                    const pdfUrl = parsedUrl.pathname === '/platform/sys/file/download'
+                        ? parsedUrl.pathname + parsedUrl.search : parsedUrl.href
+                    return {
+                        pdfUrl: '/assets/platform/plugins/pdfJs/web/viewer.html?file=' + encodeURIComponent(pdfUrl),
+                        fileName: (link.textContent || '').trim() || '活动介绍.pdf'
+                    }
+                } catch (e) {
+                    // 无法识别为 PDF 时按原有富文本内容展示。
+                    return {pdfUrl: '', fileName: '活动介绍'}
+                }
+            },
+            styleActivityPdf() {
+                try {
+                    const frame = this.$refs.activityPdfFrame
+                    const viewerDocument = frame ? frame.contentDocument : null
+                    if (!viewerDocument) return
+
+                    // 报名前预览只保留文档阅读区，隐藏 PDF.js 原生工具栏以匹配确认弹框的简洁层级。
+                    const toolbar = viewerDocument.getElementById('toolbarContainer')
+                    const mainContainer = viewerDocument.getElementById('mainContainer')
+                    const viewerContainer = viewerDocument.getElementById('viewerContainer')
+                    if (toolbar) toolbar.style.display = 'none'
+                    if (mainContainer) mainContainer.style.top = '0'
+                    if (viewerContainer) viewerContainer.style.top = '0'
+
+                    const viewerApplication = frame.contentWindow.PDFViewerApplication
+                    if (viewerApplication && viewerApplication.initializedPromise) {
+                        viewerApplication.initializedPromise.then(() => {
+                            viewerApplication.eventBus.on('pagesloaded', (event) => {
+                                this.$set(this.$data, 'activityIntroducePageCount', event.pagesCount || null)
+                            })
+                        })
+                    }
+                } catch (e) {
+                    // PDF 查看器样式隔离失败时保留原始查看器，不影响文档阅读和报名流程。
+                }
+            },
+            closeIntroduce() {
+                this.$set(this.$data, 'infoVisible', false)
             },
             onOpen(row) {
                 if(this.$moment().isBefore(this.$moment(row.activitySignUpStartTime))) {
                     this.onView(row)
                     return
                 }
-                this.infoVisible = false
+                if (!this.activityIntroduceConfirmed) {
+                    this.$message.warning('请先确认已阅读活动说明')
+                    return
+                }
+                this.$set(this.$data, 'infoVisible', false)
                 this.$nextTick(() => {
                     this.$refs.guava.view(() => {
                         this.$refs.courseListRef.onOpen(row)
diff --git a/src/main/resources/views/platform/zhgh/activity/trainSignUp/manage/info.js b/src/main/resources/views/platform/zhgh/activity/trainSignUp/manage/info.js
index f7f2e5c..be4c5b7 100644
--- a/src/main/resources/views/platform/zhgh/activity/trainSignUp/manage/info.js
+++ b/src/main/resources/views/platform/zhgh/activity/trainSignUp/manage/info.js
@@ -55,7 +55,7 @@ const info = {
                 </span>
             </el-dialog>
 
-            <el-dialog :visible.sync="viewMapDialog" title="地点" width="60%">
+            <el-dialog :visible.sync="viewMapDialog" @closed="destroyViewMap" title="地点" width="60%">
                 <div id="viewMap" style="width: 100%; height: 500px"></div>
             </el-dialog>
         </div>
@@ -69,6 +69,8 @@ const info = {
             courseTimeList: [],
 
             viewMapDialog: false,
+            viewMap: null,
+            viewMarkerLayer: null,
             welfareProjectName: '',
         }
     },
@@ -103,28 +105,49 @@ const info = {
             this.courseTimeListDialog = true
         },
         openViewMap(point) {
-            if (!Array.isArray(point)) {
+            // 地点坐标按项目现有约定传入 [纬度, 经度]，缺失或异常时不打开空白地图。
+            if (!Array.isArray(point) || point.length < 2) {
                 this.$message.warning("没有设置点位，无法通过地图查看")
                 return
             }
+            const latitude = Number(point[0])
+            const longitude = Number(point[1])
+            if (!Number.isFinite(latitude) || !Number.isFinite(longitude)) {
+                this.$message.warning("地点坐标格式有误，无法通过地图查看")
+                return
+            }
+            // 当前公共布局加载腾讯地图，脚本异常时给出提示，避免地图弹窗直接报错。
+            if (typeof TMap === "undefined") {
+                this.$message.error("地图加载失败，请刷新页面后重试")
+                return
+            }
             this.viewMapDialog = true
             this.$nextTick(() => {
-                viewMap = new AMap.Map("viewMap", {
-                    resizeEnable: true,
-                    center: point,
-                    zoom: 16
+                const center = new TMap.LatLng(latitude, longitude)
+                this.viewMap = new TMap.Map("viewMap", {
+                    center: center,
+                    zoom: 16,
                 })
-                if (viewMarker) {
-                    viewMap.remove(viewMarker)
-                }
-                viewMarker = new AMap.Marker({
-                    position: point,
-                    offset: new AMap.Pixel(-13, -30)
+                this.viewMarkerLayer = new TMap.MultiMarker({
+                    map: this.viewMap,
+                    geometries: [{
+                        id: "view-location",
+                        position: center,
+                    }],
                 })
-                viewMap.add(viewMarker)
-                viewMap.setFitView(null, false, [150, 60, 100, 60])
             })
         },
+        destroyViewMap() {
+            // 弹窗关闭后释放地图覆盖物和实例，避免重复查看地点时残留旧地图资源。
+            if (this.viewMarkerLayer && this.viewMarkerLayer.setMap) {
+                this.viewMarkerLayer.setMap(null)
+            }
+            if (this.viewMap && this.viewMap.destroy) {
+                this.viewMap.destroy()
+            }
+            this.viewMarkerLayer = null
+            this.viewMap = null
+        },
     },
     style: /*language=CSS*/ `
         /deep/ .el-button--text {