diff --git a/admin/src/views/Dashboard.vue b/admin/src/views/Dashboard.vue
index f1bad0f..a29a3e1 100644
--- a/admin/src/views/Dashboard.vue
+++ b/admin/src/views/Dashboard.vue
@@ -58,15 +58,15 @@ onMounted(async () => {
 </script>
 
 <style scoped>
-.page { display: flex; flex-direction: column; gap: 16px; }
+.page { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
 .cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
 .card { background: #fff; border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 2px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
 .card b { font-size: 24px; color: #1f2333; }
 .card span { font-size: 13px; color: #6b7080; }
 .card i { font-size: 11px; color: #a6abbb; font-style: normal; }
-.row { display: grid; grid-template-columns: 300px 1fr; gap: 12px; }
+.row { display: grid; grid-template-columns: 300px 1fr; gap: 12px; min-width: 0; }
 @media (max-width: 900px) { .row { grid-template-columns: 1fr; } }
-.panel { background: #fff; border-radius: 12px; padding: 16px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
+.panel { background: #fff; border-radius: 12px; padding: 16px; box-shadow: 0 1px 4px rgba(0,0,0,.06); min-width: 0; overflow-x: auto; }
 .panel h3 { margin: 0 0 12px; font-size: 14px; color: #1f2333; }
 .bar-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
 .bar-name { width: 64px; font-size: 12px; color: #6b7080; flex-shrink: 0; }
diff --git a/client/src/pages/trend/trend.vue b/client/src/pages/trend/trend.vue
index 4ef767b..68a31a0 100644
--- a/client/src/pages/trend/trend.vue
+++ b/client/src/pages/trend/trend.vue
@@ -200,10 +200,13 @@ function getSampleData() {
 
 // 微信小程序分享
 // #ifdef MP-WEIXIN
-onShareAppMessage(() => ({
-  title: 'AI 维度 - 你的AI知识助手',
-  path: '/pages/index/index'
-}))
+onShareAppMessage(() => {
+    const latest = (items.value || [])[0]
+    return {
+      title: latest ? `今日AI速递：${String(latest.title).slice(0, 24)}… · AI维度` : 'AI 维度 · 每天 5 分钟看懂 AI 大事',
+      path: '/pages/trend/trend'
+    }
+  })
 // #endif
 </script>
 
diff --git a/client/src/sitemap.json b/client/src/sitemap.json
new file mode 100644
index 0000000..b7eda42
--- /dev/null
+++ b/client/src/sitemap.json
@@ -0,0 +1,6 @@
+{
+  "desc": "关于本文件的更多信息，请参考文档 https://developers.weixin.qq.com/miniprogram/dev/framework/sitemap.html",
+  "rules": [
+    { "action": "allow", "page": "*" }
+  ]
+}
diff --git a/server/src/routes/seo.js b/server/src/routes/seo.js
index 3a9ec9d..1ffd21f 100644
--- a/server/src/routes/seo.js
+++ b/server/src/routes/seo.js
@@ -1,5 +1,8 @@
 const express = require('express')
 const router = express.Router()
+const { Trend } = require('../models')
+
+const esc = (x) => String(x == null ? '' : x).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
 
 // 反代场景下优先取 x-forwarded 头，保证 sitemap/robots 里的站点地址正确
 function origin(req) {
@@ -42,14 +45,22 @@ router.get('/robots.txt', (req, res) => {
   )
 })
 
-router.get('/sitemap.xml', (req, res) => {
+router.get('/sitemap.xml', async (req, res) => {
   const o = origin(req)
   const today = new Date().toISOString().slice(0, 10)
-  const urls = ['/', '/pages/trend/trend', '/pages/chat/chat', '/pages/dimension/dimension']
+  let trendUrls = ''
+  try {
+    const items = await Trend.find({}).sort({ newsDate: -1 }).limit(20).lean()
+    trendUrls = items.map((t) => `  <url><loc>${o}/trends/${t._id}</loc><lastmod>${(t.newsDate || t.createdAt || new Date()).toISOString().slice(0, 10)}</lastmod><changefreq>daily</changefreq></url>`).join('\n')
+  } catch (e) { /* 数据库不可用时仅输出基础页 */ }
   res.type('application/xml').send(
     `<?xml version="1.0" encoding="UTF-8"?>\n<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n` +
-      urls.map((u) => `  <url><loc>${o}${u}</loc><lastmod>${today}</lastmod></url>`).join('\n') +
-      `\n</urlset>`
+    [`  <url><loc>${o}/</loc><lastmod>${today}</lastmod><changefreq>daily</changefreq></url>`,
+     `  <url><loc>${o}/trends</loc><lastmod>${today}</lastmod><changefreq>daily</changefreq></url>`,
+     `  <url><loc>${o}/about</loc><changefreq>monthly</changefreq></url>`,
+     `  <url><loc>${o}/llms.txt</loc><changefreq>weekly</changefreq></url>`].join('\n') +
+    (trendUrls ? '\n' + trendUrls : '') +
+    `\n</urlset>`
   )
 })
 
@@ -62,7 +73,7 @@ router.get('/llms.txt', (req, res) => {
 
 ## 核心内容
 - 五维度知识体系：AI起源、发展脉络、当前格局、学习工具、趋势跟踪
-- 每日AI趋势：定时采集行业热点（融资、产品发布、论文）
+- 每日AI趋势：每天 8:00/20:00 自动采集 Hacker News / arXiv 热点并中文归类（产品/论文/工具/公司/政策）
 - AI问答：基于知识库的智能问答
 
 ## 免费与付费
@@ -70,7 +81,7 @@ router.get('/llms.txt', (req, res) => {
 
 ## 链接
 - [常见问题与产品说明](${o}/about)
-- [在线使用](${o}/)
+- [在线使用](${o}/)\n- [每日AI趋势速递](${o}/trends)
 `
   )
 })