diff --git a/src/components/PostList.astro b/src/components/PostList.astro
index e6ba575..0bab26f 100644
--- a/src/components/PostList.astro
+++ b/src/components/PostList.astro
@@ -1,6 +1,9 @@
 ---
-// 年份分组 + 轨道分节的文章列表（首页与 /archives/ 共用）
+// 年份分组 + 轨道分节的文章列表（首页与归档页共用）
 // 轨道标签单一事实源：content.config 的 POST_TRACKS，此处不另立词表
+// 双形态（2026-11-02 用户拍板折叠需求）：
+//   默认形态 = 首页/列表平铺（年 → 轨道分节），可 limit 截断 + moreHref 出口
+//   fold 形态 = 归档页：按年 <details>（最新年默认开）+ 年内按月分组，零 JS 原生折叠
 import type { CollectionEntry } from 'astro:content';
 import { POST_TRACKS, type PostCategory } from '../content.config';
 import { t } from '../i18n/ui';
@@ -11,8 +14,15 @@ interface Props {
   locale?: 'zh' | 'en';
   /** slug → 译题（en 列表显示英文标题，视觉复核范围外观察） */
   titleOverrides?: Record<string, string>;
+  /** 截断条数（首页 6 篇）；缺省全量 */
+  limit?: number;
+  /** 截断后的「全部文章 →」出口链接；缺省不渲染 */
+  moreHref?: string;
+  /** true = 归档折叠形态：按年 details（最新年开）＋年内按月分组 */
+  fold?: boolean;
 }
-const { posts, locale = 'zh', titleOverrides } = Astro.props;
+const { posts, locale = 'zh', titleOverrides, limit, moreHref, fold = false } = Astro.props;
+const visible = typeof limit === 'number' ? posts.slice(0, limit) : posts;
 // 轨道标签走字典（en 首页复用本组件时的双语位）；zh 保持原词表语义
 const TRACK_LABEL: Record<PostCategory, string> = {
   reading: t('category_reading', locale),
@@ -22,59 +32,125 @@ const TRACK_LABEL: Record<PostCategory, string> = {
 const hrefOf = (id: string) => (locale === 'en' ? `/en/archives/${id}/` : `/archives/${id}/`);
 
 const byYear = new Map<number, CollectionEntry<'posts'>[]>();
-for (const post of posts) {
+for (const post of visible) {
   const year = post.data.pubDate.getUTCFullYear();
   const bucket = byYear.get(year);
   if (bucket) bucket.push(post);
   else byYear.set(year, [post]);
 }
+const units = t('unit_posts', locale);
 const mmdd = (d: Date) =>
   `${String(d.getUTCMonth() + 1).padStart(2, '0')}-${String(d.getUTCDate()).padStart(2, '0')}`;
+// 月分组标签：zh「2026 年 11 月」/ en「November 2026」（UTC，与年份口径一致）
+const monthLabel = (d: Date) =>
+  locale === 'zh'
+    ? `${d.getUTCFullYear()} 年 ${d.getUTCMonth() + 1} 月`
+    : `${d.toLocaleString('en-US', { month: 'long', timeZone: 'UTC' })} ${d.getUTCFullYear()}`;
+const byMonth = (list: CollectionEntry<'posts'>[]) => {
+  const m = new Map<string, CollectionEntry<'posts'>[]>();
+  for (const post of list) {
+    const key = `${post.data.pubDate.getUTCFullYear()}-${post.data.pubDate.getUTCMonth()}`;
+    const bucket = m.get(key);
+    if (bucket) bucket.push(post);
+    else m.set(key, [post]);
+  }
+  return [...m.entries()];
+};
 ---
 
-<div class="post-list">
-  {[...byYear.entries()].map(([year, list]) => (
-    <section class="year-block" aria-label={`${year} 年文章`}>
-      <h2 class="year">{year}</h2>
-      {(Object.keys(POST_TRACKS) as PostCategory[]).map((cat) => {
-        const rows = list.filter((post) => post.data.category === cat);
-        if (rows.length === 0) return null;
-        return (
-          <div class="track-block">
-            <h3 class="track">
+{fold ? (
+  <div class="post-list post-list-fold">
+    {[...byYear.entries()].map(([year, list], i) => (
+      <details class="year-fold" open={i === 0}>
+        <summary class="year-summary">
+          <span class="year-num">{year}</span>
+          <span class="year-count mono">· {list.length} {units}</span>
+        </summary>
+        <div class="year-body">
+          {byMonth(list).map(([key, rows]) => (
+            <section class="month-block">
+              <h3 class="month-head">
+                <span>{monthLabel(rows[0].data.pubDate)}</span>
+                <span class="mono month-count">· {rows.length} {units}</span>
+              </h3>
+              <ul>
+                {rows.map((post) => (
+                  <li>
+                    <a class="row tap" href={hrefOf(post.id)}>
+                      {post.data.category === 'reading' && (
+                        <i
+                          class="emo"
+                          style={`background:${post.data.mood ?? 'var(--mood)'}`}
+                          title="情绪色"
+                          aria-hidden="true"
+                        />
+                      )}
+                      <span class="row-title">{titleOverrides?.[post.id] ?? post.data.title}</span>
+                      {post.data.category !== 'reading' &&
+                        post.data.tags.map((tag) => <code class="tag">{`#${tag}`}</code>)}
+                      <time class="row-date" datetime={post.data.pubDate.toISOString()}>
+                        {mmdd(post.data.pubDate)}
+                      </time>
+                    </a>
+                  </li>
+                ))}
+              </ul>
+            </section>
+          ))}
+        </div>
+      </details>
+    ))}
+  </div>
+) : (
+  <div class="post-list">
+    {[...byYear.entries()].map(([year, list]) => (
+      <section class="year-block" aria-label={`${year} 年文章`}>
+        <h2 class="year">{year}</h2>
+        {(Object.keys(POST_TRACKS) as PostCategory[]).map((cat) => {
+          const rows = list.filter((post) => post.data.category === cat);
+          if (rows.length === 0) return null;
+          return (
+            <div class="track-block">
+              <h3 class="track">
                 {TRACK_LABEL[cat]}
                 {cat === 'reading' && (
                   <a class="shelf-link" href={locale === 'en' ? '/en/books/' : '/books/'}>{locale === 'en' ? 'Books →' : '书架 →'}</a>
                 )}
               </h3>
-            <ul>
-              {rows.map((post) => (
-                <li>
-                  <a class="row tap" href={hrefOf(post.id)}>
-                    {cat === 'reading' && (
-                      <i
-                        class="emo"
-                        style={`background:${post.data.mood ?? 'var(--mood)'}`}
-                        title="情绪色"
-                        aria-hidden="true"
-                      />
-                    )}
-                    <span class="row-title">{titleOverrides?.[post.id] ?? post.data.title}</span>
-                    {cat !== 'reading' &&
-                      post.data.tags.map((tag) => <code class="tag">{`#${tag}`}</code>)}
-                    <time class="row-date" datetime={post.data.pubDate.toISOString()}>
-                      {mmdd(post.data.pubDate)}
-                    </time>
-                  </a>
-                </li>
-              ))}
-            </ul>
-          </div>
-        );
-      })}
-    </section>
-  ))}
-</div>
+              <ul>
+                {rows.map((post) => (
+                  <li>
+                    <a class="row tap" href={hrefOf(post.id)}>
+                      {cat === 'reading' && (
+                        <i
+                          class="emo"
+                          style={`background:${post.data.mood ?? 'var(--mood)'}`}
+                          title="情绪色"
+                          aria-hidden="true"
+                        />
+                      )}
+                      <span class="row-title">{titleOverrides?.[post.id] ?? post.data.title}</span>
+                      {cat !== 'reading' &&
+                        post.data.tags.map((tag) => <code class="tag">{`#${tag}`}</code>)}
+                      <time class="row-date" datetime={post.data.pubDate.toISOString()}>
+                        {mmdd(post.data.pubDate)}
+                      </time>
+                    </a>
+                  </li>
+                ))}
+              </ul>
+            </div>
+          );
+        })}
+      </section>
+    ))}
+    {moreHref && (
+      <p class="more-row">
+        <a class="more-link tap" href={moreHref}>{t('home_more_posts', locale)}</a>
+      </p>
+    )}
+  </div>
+)}
 
 <style>
   .year-block + .year-block { margin-top: var(--space-5); }
@@ -159,4 +235,62 @@ const mmdd = (d: Date) =>
     font-variant-numeric: tabular-nums;
     white-space: nowrap;
   }
+  .more-row { margin: var(--space-3) 0 0; text-align: right; }
+  .more-link {
+    font-family: var(--font-mono);
+    font-size: 13px;
+    color: var(--accent);
+    border-bottom: 1px solid transparent;
+  }
+  .more-link:hover { border-bottom-color: var(--accent); }
+
+  /* ---- 归档折叠形态（fold）---- */
+  .year-fold { border-top: 1px solid var(--line); }
+  .year-fold:last-child { border-bottom: 1px solid var(--line); }
+  .year-summary {
+    display: flex;
+    align-items: baseline;
+    gap: 0.4rem;
+    padding: var(--space-2) 0;
+    cursor: pointer;
+    list-style: none;
+    color: var(--ink-2);
+  }
+  .year-summary::-webkit-details-marker { display: none; }
+  .year-summary::before {
+    content: '▸';
+    font-size: 11px;
+    color: var(--ink-4);
+    transition: transform var(--dur) var(--ease);
+    transform-origin: 50% 50%;
+    display: inline-block;
+    width: 1em;
+  }
+  .year-fold[open] > .year-summary::before { transform: rotate(90deg); }
+  .year-summary:hover { color: var(--ink-1); }
+  .year-num { font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }
+  .year-count { font-size: 12px; color: var(--ink-4); }
+  .year-body { padding-bottom: var(--space-2); }
+  .month-block + .month-block { margin-top: var(--space-3); }
+  .month-head {
+    display: flex;
+    align-items: baseline;
+    gap: 0.35rem;
+    margin: var(--space-2) 0 var(--space-1);
+    font-size: 12.5px;
+    font-weight: 400;
+    color: var(--ink-4);
+    letter-spacing: 0.04em;
+  }
+  .month-head::before {
+    content: '';
+    width: 7px;
+    height: 7px;
+    border-radius: 2px;
+    background: var(--ink-4);
+  }
+  .month-count { font-size: 11.5px; }
+  @media (prefers-reduced-motion: reduce) {
+    .year-summary::before { transition: none; }
+  }
 </style>
diff --git a/src/components/pages/BooksPage.astro b/src/components/pages/BooksPage.astro
index 1ecd121..f8348b4 100644
--- a/src/components/pages/BooksPage.astro
+++ b/src/components/pages/BooksPage.astro
@@ -28,9 +28,12 @@ const L = {
 
 <BaseLayout track="reading" title={`${L.shelf} · wait4x`} description={locale === 'zh' ? '读过的书与一句策展' : 'Books read, one line each'}>
   <h1 class="page-title">{L.shelf}<span class="count mono">{L.count(books.length)}</span></h1>
-  {years.map((year) => (
-    <section class="year-group">
-      <h2 class="y-label mono">{year}</h2>
+  {years.map((year, yi) => (
+    <details class="year-group" open={yi === 0}>
+      <summary class="y-summary">
+        <span class="y-label mono">{year}</span>
+        <span class="y-count mono">· {books.filter((b) => b.data.pubDate.getFullYear() === year).length} {locale === 'zh' ? '本' : 'books'}</span>
+      </summary>
       <ul class="shelf">
         {books.filter((b) => b.data.pubDate.getFullYear() === year).map((b) => (
           <li>
@@ -62,7 +65,7 @@ const L = {
           </li>
         ))}
       </ul>
-    </section>
+    </details>
   ))}
 </BaseLayout>
 
@@ -75,8 +78,32 @@ const L = {
     gap: var(--space-3);
   }
   .count { font-size: 13px; color: var(--ink-3); }
-  .year-group { margin-top: var(--space-5); }
-  .y-label { font-size: 16px; color: var(--ink-3); margin-bottom: var(--space-3); }
+  .year-group { margin-top: var(--space-4); border-top: 1px solid var(--line); }
+  .y-summary {
+    display: flex;
+    align-items: baseline;
+    gap: 0.4rem;
+    padding: var(--space-2) 0;
+    cursor: pointer;
+    list-style: none;
+  }
+  .y-summary::-webkit-details-marker { display: none; }
+  .y-summary::before {
+    content: '▸';
+    font-size: 11px;
+    color: var(--ink-4);
+    transition: transform var(--dur) var(--ease);
+    transform-origin: 50% 50%;
+    display: inline-block;
+    width: 1em;
+  }
+  .year-group[open] > .y-summary::before { transform: rotate(90deg); }
+  .y-summary:hover .y-label { color: var(--ink-2); }
+  .y-count { font-size: 12px; color: var(--ink-4); }
+  @media (prefers-reduced-motion: reduce) {
+    .y-summary::before { transition: none; }
+  }
+  .y-label { font-size: 16px; color: var(--ink-3); margin-bottom: 0; transition: color var(--dur) var(--ease); }
   .shelf {
     list-style: none;
     padding: 0;
diff --git a/src/i18n/ui.ts b/src/i18n/ui.ts
index b89f81d..d485120 100644
--- a/src/i18n/ui.ts
+++ b/src/i18n/ui.ts
@@ -21,6 +21,9 @@ const dict = {
   paper_fallback_title: { zh: '无法内嵌展示全文，请用浏览器打开', en: 'Inline preview unavailable — open in a browser' },
   paper_wechat_hint: { zh: '微信内请点右上角「···」→ 在浏览器打开', en: 'In WeChat, tap ··· (top right) → Open in Browser' },
   paper_open_browser: { zh: '在浏览器中打开 PDF →', en: 'Open the PDF in your browser →' },
+  // 折叠批（2026-11-02）：首页限 6 篇 + 归档/书架按年折叠
+  home_more_posts: { zh: '全部文章 →', en: 'All posts →' },
+  unit_posts: { zh: '篇', en: 'posts' },
   search_label: { zh: '搜索', en: 'Search' },
   search_placeholder: { zh: '搜索文章…（Esc 关闭）', en: 'Search posts… (Esc to close)' },
   search_hint: { zh: '索引由 Pagefind 构建期生成 · 静态站零后端', en: 'Index built by Pagefind · zero-backend static site' },
diff --git a/src/pages/archives/index.astro b/src/pages/archives/index.astro
index 4f8ec32..80592a3 100644
--- a/src/pages/archives/index.astro
+++ b/src/pages/archives/index.astro
@@ -11,8 +11,8 @@ const posts = (await getCollection('posts', ({ data }) => !data.draft && !data.t
 
 <BaseLayout title="文章 · wait4x">
   <h1 class="page-title">文章</h1>
-  <p class="page-note">按年份归档 · 轨道分节 · 共 {posts.length} 篇</p>
-  <PostList {posts} />
+  <p class="page-note">按年份折叠 · 月分分组 · 共 {posts.length} 篇</p>
+  <PostList {posts} fold />
 </BaseLayout>
 
 <style>
diff --git a/src/pages/en/archives/index.astro b/src/pages/en/archives/index.astro
index f006505..8dea9a2 100644
--- a/src/pages/en/archives/index.astro
+++ b/src/pages/en/archives/index.astro
@@ -13,5 +13,5 @@ const enTitle = Object.fromEntries(
 ---
 
 <BaseLayout title="Posts · wait4x" description="All posts">
-  <PostList {posts} locale="en" titleOverrides={enTitle} />
+  <PostList {posts} locale="en" titleOverrides={enTitle} fold />
 </BaseLayout>
diff --git a/src/pages/en/index.astro b/src/pages/en/index.astro
index 5822c77..3e92b09 100644
--- a/src/pages/en/index.astro
+++ b/src/pages/en/index.astro
@@ -69,7 +69,7 @@ const photos = (await getCollection('photos')).slice(0, 4);
     </div>
   </IdCard>
 
-  <PostList {posts} locale="en" titleOverrides={enTitle} />
+  <PostList {posts} locale="en" titleOverrides={enTitle} limit={6} moreHref="/en/archives/" />
 
   <section class="latest" aria-label={t('latest_photos', 'en')}>
     <div class="latest-head">
diff --git a/src/pages/index.astro b/src/pages/index.astro
index b506092..72d16c1 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -68,7 +68,7 @@ const heartbeat = await fetchHeartbeat();
     </div>
   </IdCard>
 
-  <PostList {posts} />
+  <PostList {posts} limit={6} moreHref="/archives/" />
 
   <section class="latest" aria-label="最新影像">
     <div class="latest-head">
diff --git a/tests/e2e.mjs b/tests/e2e.mjs
index 84750ec..e009527 100644
--- a/tests/e2e.mjs
+++ b/tests/e2e.mjs
@@ -89,6 +89,31 @@ ok('en 品牌链接指 /en/', enBrand === '/en/', String(enBrand));
 const enCanon = await page.getAttribute('link[rel="canonical"]', 'href');
 ok('en 页 canonical 自指', !!enCanon && new URL(enCanon).pathname === new URL(page.url()).pathname, enCanon ?? '无 canonical');
 
+// ---------- 折叠批：首页限 6 篇 / 归档年折叠 / 书架年折叠 ----------
+await page.goto(BASE + '/', { waitUntil: 'networkidle' });
+const homeRows = await page.$$eval('.post-list .row', (as) => as.length);
+const homeMore = await page.locator('.more-row a[href="/archives/"]').count();
+ok('首页 ≤6 篇 + 全部文章入口', homeRows > 0 && homeRows <= 6 && homeMore === 1, `条数=${homeRows} 入口=${homeMore}`);
+
+await page.goto(BASE + '/archives/', { waitUntil: 'networkidle' });
+const arch = await page.evaluate(() => {
+  const all = [...document.querySelectorAll('.year-fold')];
+  return {
+    total: all.length,
+    open: all.filter((d) => d.hasAttribute('open')).length,
+    firstOpen: all[0]?.hasAttribute('open') ?? false,
+    months: document.querySelectorAll('.month-head').length,
+  };
+});
+ok('归档 首年展开/往年折叠 + 月分组', arch.total >= 1 && arch.open === 1 && arch.firstOpen && arch.months >= 1, JSON.stringify(arch));
+
+await page.goto(BASE + '/books/', { waitUntil: 'networkidle' });
+const books = await page.evaluate(() => {
+  const all = [...document.querySelectorAll('.year-group')];
+  return { total: all.length, open: all.filter((d) => d.hasAttribute('open')).length, firstOpen: all[0]?.hasAttribute('open') ?? false };
+});
+ok('书架 当年展开/往昔折叠', books.total >= 1 && books.open === 1 && books.firstOpen, JSON.stringify(books));
+
 // 4) 命令面板 + 搜索
 await page.keyboard.press('Control+k');
 await page.waitForTimeout(400);
@@ -113,11 +138,22 @@ for (let i = 0; i < 3 && !helpOpen; i++) {
   if (!helpOpen) { await page.keyboard.press('Escape'); await page.waitForTimeout(150); }
 }
 ok('键盘 ? 帮助浮层', helpOpen > 0);
-await page.keyboard.press('Escape');
-await page.keyboard.press('g');
-await page.keyboard.press('g');
-await page.waitForLoadState('networkidle');
-ok('g-chords 导航到图库', page.url().includes('/gallery'));
+// 洁净起点：前序测试（折叠/面板）可能留下在途导航或残留焦点，弦键在
+// 页面被替换的瞬间会丢键——先回稳定页再测（测试意图=弦可用，不依赖前序状态）
+await page.goto(BASE + '/', { waitUntil: 'networkidle' });
+// g-chords 加固：新折叠批在套件中段加了多次导航，弦键偶发不点火（隔离必过）——
+// 同 '?' 家法：Esc+blur+重试三连，避免单次时序失败污染验收
+let chordOk = false;
+for (let i = 0; i < 3 && !chordOk; i++) {
+  await page.keyboard.press('Escape');
+  await page.evaluate(() => document.activeElement?.blur?.());
+  await page.waitForTimeout(200);
+  await page.keyboard.press('g');
+  await page.keyboard.press('g');
+  await page.waitForTimeout(600);
+  chordOk = page.url().includes('/gallery');
+}
+ok('g-chords 导航到图库', chordOk, page.url());
 
 // 6) 图库：网格可见（灯箱不再自动打开）+ 灯箱交互
 // g-chords 的 location.href 与 goto 竞态（修好的弦导航在 en 页跳 /en/gallery/，