diff --git a/web/src/pages/NotificationsPage.tsx b/web/src/pages/NotificationsPage.tsx
index fbde682..6cf90ff 100644
--- a/web/src/pages/NotificationsPage.tsx
+++ b/web/src/pages/NotificationsPage.tsx
@@ -1,10 +1,19 @@
-import { useEffect, type CSSProperties } from 'react';
+import { useEffect, useState, type CSSProperties } from 'react';
 import { useNavigate, useSearchParams } from 'react-router-dom';
 import DOMPurify from 'dompurify';
 import { Sidebar } from '../components/Sidebar';
 import { useNotificationStore } from '../store/notification';
 import type { AppNotification, NotificationType } from '../types';
 
+// 剥 HTML 取纯文本前 N 字,用于列表行缩略预览
+function stripAndTruncate(html: string, maxChars = 60): string {
+  // 用 DOMParser 而非正则,防 `<script>` 这种诡异内容
+  const doc = new DOMParser().parseFromString(html, 'text/html');
+  const text = (doc.body.textContent || '').replace(/\s+/g, ' ').trim();
+  if (text.length <= maxChars) return text;
+  return text.slice(0, maxChars) + '…';
+}
+
 // 每条通知顶部标签 — 4 色一目了然
 const TYPE_CHIP: Record<NotificationType, { text: string; color: string; bg: string }> = {
   announcement: { text: '公告', color: 'var(--color-primary)', bg: 'var(--color-primary-bg, rgba(0,184,230,0.12))' },
@@ -188,63 +197,137 @@ const styles: Record<string, CSSProperties> = {
 interface NotificationRowProps {
   item: AppNotification;
   isLast: boolean;
-  onClick: (item: AppNotification) => void;
+  expanded: boolean;
+  onToggle: (item: AppNotification) => void;
+  onJump: (url: string) => void;
 }
 
-function NotificationRow({ item, isLast, onClick }: NotificationRowProps) {
+/**
+ * 通知行 — accordion 模式:
+ *
+ * - 折叠态:chip + title + 时间 + 一行剥 HTML 后的纯文本缩略
+ * - 展开态:折叠态内容 + 下方完整内容(announcement 用 HTML 渲染,其他 plain) +
+ *           如果 link_url 非空,底部加【前往查看】按钮(用户主动点才跳,不再自动跳)
+ *
+ * 始终同一时刻最多 1 行展开(父组件用 expandedId 单值 state 控制),
+ * 点已展开的行再次点 → 收起;点其他行 → 自动收起当前展开 + 展开新行。
+ */
+function NotificationRow({ item, isLast, expanded, onToggle, onJump }: NotificationRowProps) {
   const rowStyle: CSSProperties = {
     ...styles.row,
-    ...(isLast ? styles.rowLast : {}),
+    ...(isLast && !expanded ? styles.rowLast : {}),
     background: item.is_read ? 'transparent' : 'var(--color-primary-bg, transparent)',
+    flexDirection: 'column',
+    alignItems: 'stretch',
+    cursor: 'pointer',
   };
   const titleStyle: CSSProperties = {
     ...styles.rowTitle,
     ...(item.is_read ? styles.rowTitleRead : {}),
+    whiteSpace: 'normal',  // 展开后允许换行
   };
   const chip = TYPE_CHIP[item.type] || TYPE_CHIP.system;
   const isAnnouncement = item.type === 'announcement';
+  const previewText = isAnnouncement
+    ? stripAndTruncate(item.content, 60)
+    : (item.content.length > 60 ? item.content.slice(0, 60) + '…' : item.content);
+
   return (
     <div
       style={rowStyle}
-      onClick={() => onClick(item)}
+      onClick={() => onToggle(item)}
       onMouseEnter={(e) => {
-        e.currentTarget.style.background = 'var(--color-bg-hover)';
+        if (!expanded) e.currentTarget.style.background = 'var(--color-bg-hover)';
       }}
       onMouseLeave={(e) => {
-        e.currentTarget.style.background = item.is_read
-          ? 'transparent'
-          : 'var(--color-primary-bg, transparent)';
+        if (!expanded) {
+          e.currentTarget.style.background = item.is_read
+            ? 'transparent'
+            : 'var(--color-primary-bg, transparent)';
+        }
       }}
     >
-      {item.is_read ? (
-        <div style={styles.dotPlaceholder} />
-      ) : (
-        <div style={styles.unreadDot} aria-label="未读" />
-      )}
-      <div style={styles.rowContent}>
-        <div style={styles.rowHead}>
-          <div style={{ display: 'flex', alignItems: 'center', gap: 8, minWidth: 0, flex: 1 }}>
-            <span style={{
-              padding: '1px 7px', borderRadius: 4, fontSize: 11, fontWeight: 500,
-              color: chip.color, background: chip.bg, flexShrink: 0,
-            }}>
-              {chip.text}
-            </span>
-            <span style={titleStyle}>{item.title}</span>
-          </div>
-          <span style={styles.rowTime} title={new Date(item.created_at).toLocaleString('zh-CN')}>
-            {formatRelative(item.created_at)}
-          </span>
-        </div>
-        {isAnnouncement ? (
-          <div
-            style={styles.rowBody}
-            dangerouslySetInnerHTML={{ __html: DOMPurify.sanitize(item.content) }}
-          />
+      {/* 折叠/展开公共头部 */}
+      <div style={{ display: 'flex', gap: 12, alignItems: 'flex-start' }}>
+        {item.is_read ? (
+          <div style={styles.dotPlaceholder} />
         ) : (
-          <div style={styles.rowBody}>{item.content}</div>
+          <div style={styles.unreadDot} aria-label="未读" />
         )}
+        <div style={styles.rowContent}>
+          <div style={styles.rowHead}>
+            <div style={{ display: 'flex', alignItems: 'center', gap: 8, minWidth: 0, flex: 1 }}>
+              <span style={{
+                padding: '1px 7px', borderRadius: 4, fontSize: 11, fontWeight: 500,
+                color: chip.color, background: chip.bg, flexShrink: 0,
+              }}>
+                {chip.text}
+              </span>
+              <span style={titleStyle}>{item.title}</span>
+            </div>
+            <span style={styles.rowTime} title={new Date(item.created_at).toLocaleString('zh-CN')}>
+              {formatRelative(item.created_at)}
+            </span>
+          </div>
+          {/* 折叠态:一行缩略;展开态:不渲染缩略(改下方完整内容) */}
+          {!expanded && previewText && (
+            <div style={{ ...styles.rowBody, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+              {previewText}
+            </div>
+          )}
+        </div>
+        {/* 折叠/展开 chevron 视觉指示 */}
+        <div style={{
+          flexShrink: 0, color: 'var(--color-text-tertiary)', marginTop: 3,
+          transform: expanded ? 'rotate(180deg)' : 'rotate(0deg)',
+          transition: 'transform 0.15s',
+        }}>
+          <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+            <polyline points="6 9 12 15 18 9" />
+          </svg>
+        </div>
       </div>
+
+      {/* 展开态:完整内容 + 【前往查看】按钮 */}
+      {expanded && (
+        <div style={{
+          marginTop: 12, paddingTop: 12, paddingLeft: 20,
+          borderTop: '1px dashed var(--color-border-modal-soft)',
+        }} onClick={(e) => e.stopPropagation()}>
+          {isAnnouncement ? (
+            <div
+              style={{
+                fontSize: 13, color: 'var(--color-text-primary)', lineHeight: 1.7, wordBreak: 'break-word',
+              }}
+              dangerouslySetInnerHTML={{ __html: DOMPurify.sanitize(item.content) }}
+            />
+          ) : (
+            <div style={{
+              fontSize: 13, color: 'var(--color-text-primary)', lineHeight: 1.7,
+              wordBreak: 'break-word', whiteSpace: 'pre-wrap',
+            }}>
+              {item.content}
+            </div>
+          )}
+          {item.link_url && (
+            <button
+              type="button"
+              onClick={(e) => { e.stopPropagation(); onJump(item.link_url); }}
+              style={{
+                marginTop: 12, padding: '6px 14px', fontSize: 13,
+                background: 'var(--color-primary)', color: '#fff',
+                border: 'none', borderRadius: 6, cursor: 'pointer',
+                display: 'inline-flex', alignItems: 'center', gap: 6,
+              }}
+            >
+              前往查看
+              <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+                <path d="M5 12h14M13 5l7 7-7 7" />
+              </svg>
+            </button>
+          )}
+        </div>
+      )}
     </div>
   );
 }
@@ -254,6 +337,9 @@ export function NotificationsPage() {
   const [searchParams] = useSearchParams();
   const unreadOnly = searchParams.get('unread_only') === 'true';
 
+  // accordion 模式:始终最多 1 条展开
+  const [expandedId, setExpandedId] = useState<number | null>(null);
+
   const list = useNotificationStore((s) => s.list);
   const total = useNotificationStore((s) => s.total);
   const page = useNotificationStore((s) => s.page);
@@ -267,6 +353,7 @@ export function NotificationsPage() {
   // 首次加载 + URL 切换时拉第一页
   useEffect(() => {
     fetchList({ page: 1, unread_only: unreadOnly });
+    setExpandedId(null);  // 切页时收起所有
   }, [fetchList, unreadOnly]);
 
   const totalPages = Math.max(1, Math.ceil(total / Math.max(1, pageSize)));
@@ -276,12 +363,25 @@ export function NotificationsPage() {
     fetchList({ page: p, unread_only: unreadOnly });
   };
 
-  const handleRowClick = async (item: AppNotification) => {
-    if (!item.is_read) {
-      markRead(item.id);
+  // accordion toggle:同 id 再点收起;不同 id 切换到新 id;未读自动标已读
+  const handleToggle = (item: AppNotification) => {
+    if (expandedId === item.id) {
+      setExpandedId(null);
+    } else {
+      setExpandedId(item.id);
+      if (!item.is_read) {
+        markRead(item.id);
+      }
     }
-    if (item.link_url) {
-      navigate(item.link_url);
+  };
+
+  // 跳转按钮 — 用户主动点【前往查看】才触发,不再点行就跳
+  const handleJump = (url: string) => {
+    if (!url) return;
+    if (url.startsWith('http')) {
+      window.open(url, '_blank', 'noopener,noreferrer');
+    } else {
+      navigate(url);
     }
   };
 
@@ -334,7 +434,9 @@ export function NotificationsPage() {
                     key={item.id}
                     item={item}
                     isLast={idx === list.length - 1}
-                    onClick={handleRowClick}
+                    expanded={expandedId === item.id}
+                    onToggle={handleToggle}
+                    onJump={handleJump}
                   />
                 ))}
               </div>
diff --git a/web/src/pages/SettingsPage.tsx b/web/src/pages/SettingsPage.tsx
index 61cf0d3..2dee48e 100644
--- a/web/src/pages/SettingsPage.tsx
+++ b/web/src/pages/SettingsPage.tsx
@@ -262,10 +262,11 @@ export function SettingsPage() {
           <div style={{ display: 'flex', gap: 4, marginBottom: 6, flexWrap: 'wrap' }}>
             {[
               { label: 'B', tag: 'b', title: '加粗' },
-              { label: '红字', wrap: ['<span style="color:#ff4d4f">', '</span>'], title: '红色文字' },
-              { label: '蓝字', wrap: ['<span style="color:#00b8e6">', '</span>'], title: '蓝色文字' },
+              // 用 CSS var 而非硬编码颜色 — 浅色 / 深色主题自动适配,避免浅色下糊
+              { label: '红字', wrap: ['<span style="color:var(--color-danger)">', '</span>'], title: '红色文字(自适应主题)' },
+              { label: '蓝字', wrap: ['<span style="color:var(--color-primary)">', '</span>'], title: '蓝色文字(自适应主题)' },
               { label: 'H3', wrap: ['<h3 style="margin:8px 0 4px">', '</h3>'], title: '标题' },
-              { label: '分割线', insert: '<hr style="border:none;border-top:1px solid #333;margin:12px 0">', title: '分割线' },
+              { label: '分割线', insert: '<hr style="border:none;border-top:1px solid var(--color-border-card);margin:12px 0">', title: '分割线' },
               { label: '列表项', insert: '<li>', title: '列表项' },
             ].map((btn) => (
               <button
diff --git a/web/test/announcement-integration-smoke.mjs b/web/test/announcement-integration-smoke.mjs
index abb9e20..a1434b0 100644
--- a/web/test/announcement-integration-smoke.mjs
+++ b/web/test/announcement-integration-smoke.mjs
@@ -93,7 +93,11 @@ async function main() {
   } catch (e) { fail('1. 空内容', e); }
 
   // ── 2. HTML 发送返回 200 + sent_to ──
-  const testContent = `<p>smoke 测试公告 ${Date.now()} - <b>请忽略</b></p>`;
+  // 内容做长一点 — 短公告 preview 不会截断,折叠态/展开态文字完全一样,
+  // 测试 7.3 收起没法用 text 区分;长内容让 preview '…' 截断,
+  // 用末尾独有 marker 字串作为"只在展开态才看得到"的探针。
+  const uniqueMarker = `EXPANDED-ONLY-MARKER-${Date.now()}`;
+  const testContent = `<p>smoke 测试公告 1234567890abcdefghijklmnop 用一些很多文字填充让 preview 截断,确保折叠态看不到完整 HTML。占位文字继续:用户/团队/超管角色矩阵 → 团队管理/消费记录/系统设置。结尾标记 <b>${uniqueMarker}</b></p>`;
   let sentTo = 0;
   try {
     const r = await fetch(`${API}/api/v1/admin/announcement/publish`, {
@@ -161,7 +165,7 @@ async function main() {
     else fail('6.1 再次弹出', new Error('已读状态下还在弹'));
   } catch (e) { fail('6. 关闭流程', e); }
 
-  // ── 7. 消息中心:看到公告条目 + chip + HTML 渲染 ──
+  // ── 7. 消息中心:accordion 列表 ──
   try {
     await page.goto(`${BASE}/notifications`, { waitUntil: 'domcontentloaded' });
     await page.waitForTimeout(2000);
@@ -169,11 +173,32 @@ async function main() {
     const chip = await page.locator('text=/^公告$/').first().isVisible({ timeout: 3000 });
     if (chip) pass('7. 消息中心显示 [公告] chip');
     else fail('7. chip 缺失', new Error('未找到公告 chip'));
-    // HTML 渲染:smoke 测试公告 文字应可见
-    const contentVisible = await page.locator('text=smoke 测试公告').first().isVisible({ timeout: 2000 });
-    if (contentVisible) pass('7.1 公告内容 HTML 渲染正常');
-    else fail('7.1 HTML 渲染', new Error('看不到公告文字'));
-  } catch (e) { fail('7. 消息中心', e); }
+    // 折叠态:公告文字应该在 title 行(标题"系统公告")就能看到
+    const titleVisible = await page.locator('text=系统公告').first().isVisible({ timeout: 2000 });
+    if (titleVisible) pass('7.1 折叠态显示公告标题');
+    else fail('7.1 折叠态', new Error('看不到公告标题'));
+
+    // ── 7.2 点击行展开 → 看到末尾独有 marker(只在展开态才能看到,折叠 preview 被 60 字 '…' 截断) ──
+    // 用 chip [公告] 作为稳定点击锚点(chip 只在头部出现,不会跳到展开内容里)
+    const chipLocator = page.locator('text=/^公告$/').first();
+    // 先验证折叠态看不到 marker
+    const markerInCollapsed = await page.locator(`text=${uniqueMarker}`).first().isVisible({ timeout: 1000 }).catch(() => false);
+    if (!markerInCollapsed) pass('7.2.0 折叠态 preview 截断,看不到末尾 marker');
+    else fail('7.2.0 折叠态泄漏', new Error('折叠状态下却看得到 marker,preview 没截断'));
+
+    await chipLocator.click({ force: true, timeout: 3000 });
+    await page.waitForTimeout(800);
+    const expandedMarker = await page.locator(`text=${uniqueMarker}`).first().isVisible({ timeout: 2000 });
+    if (expandedMarker) pass('7.2 点击行展开后显示完整 HTML 内容(看到末尾 marker)');
+    else fail('7.2 展开内容', new Error('展开后看不到 marker'));
+
+    // ── 7.3 再点 chip → 收起(marker 不再可见) ──
+    await chipLocator.click({ force: true, timeout: 3000 });
+    await page.waitForTimeout(800);
+    const stillExpanded = await page.locator(`text=${uniqueMarker}`).first().isVisible({ timeout: 1000 }).catch(() => false);
+    if (!stillExpanded) pass('7.3 再点同一行收起 (accordion,marker 不再可见)');
+    else fail('7.3 收起', new Error('再点没收起,marker 还可见'));
+  } catch (e) { fail('7. 消息中心 accordion', e); }
 
   // 清场:把测试造的公告标已读,避免污染下一次 smoke
   await fetch(`${API}/api/v1/announcement/read`, {