diff --git a/docs/rebuild-spec/09-ssr-progress.md b/docs/rebuild-spec/09-ssr-progress.md
index 0dc9103..8a92ac3 100644
--- a/docs/rebuild-spec/09-ssr-progress.md
+++ b/docs/rebuild-spec/09-ssr-progress.md
@@ -10,8 +10,8 @@
 
 | 项 | 值 |
 |----|-----|
-| **上一刀** | 首页门面精修（Feed 头像/摘要/互动 + 高级搜索收起 + 侧栏分组） |
-| **下一刀** | 需点名（移动侧栏抽屉 / 帖详情抛光 / OIDC Admin / S3…） |
+| **上一刀** | 首页对齐 main SPA 视觉与交互（草绿壳 + Feed v2） |
+| **下一刀** | 需点名（移动抽屉 / 帖详情抛光 / OIDC Admin…） |
 | **工作区** | 应干净 |
 
 ---
@@ -32,7 +32,7 @@
 | Markdown 工具栏 + preview | 已迁 |
 | 浅色 / 暗色 / 跟随系统 | 已迁（CSS 媒体查询，无 head 防闪脚本） |
 | 未挂载论坛 JSON API | 已删（对照 `main`） |
-| 公开页设计系统 | 已迁（清青 chrome + `?v=` + 首页 Feed 门面密度） |
+| 公开页设计系统 | 已迁（首页对齐 main SPA 草绿壳；[10-design-system.md](10-design-system.md)） |
 
 ---
 
diff --git a/docs/rebuild-spec/10-design-system.md b/docs/rebuild-spec/10-design-system.md
index ff4bd6c..e863501 100644
--- a/docs/rebuild-spec/10-design-system.md
+++ b/docs/rebuild-spec/10-design-system.md
@@ -3,7 +3,7 @@
 > **读者**：实现公开页视觉 / CSS 的 AI  
 > **前置**：[01-product.md](01-product.md)、[06-pages-ux.md](06-pages-ux.md)  
 > **实现**：[`web_src/css/site.css`](../../web_src/css/site.css)、[`templates/base/`](../../templates/base/)  
-> **品牌**：默认「姜十三论坛」（安装/后台可改 `site_name`）；强调色取 **青**（纪念向，非 SPA 草绿）
+> **品牌**：默认「姜十三论坛」；首页视觉对齐 `main` SPA 草绿产品壳
 
 视觉可重设；**信息架构与关键操作流以 06 为准**。本文件只约定公开页壳层与内容表面的视觉语言。
 
@@ -15,9 +15,9 @@
 
 | 项 | 约定 |
 |----|------|
-| 关键词 | 清青、产品感、冷静、可读、偏内容 |
-| 密度 | 接近 V2EX / NGA，同时顶栏对齐 SPA 式工具条 |
-| 反模式 | 紫渐变、暖奶油底、大圆角卡片墙、全幅 hero、Inter/Roboto、顶栏链接墙、依赖本机 IBM Plex |
+| 关键词 | 对齐 `main` SPA：草绿 `#18a058`、清新产品壳 |
+| 密度 | SPA 同款顶栏工具条 + Feed `post-row--v2` |
+| 反模式 | 紫渐变、暖奶油底、大圆角卡片墙、全幅 hero、Inter/Roboto |
 
 ---
 
@@ -27,16 +27,12 @@
 
 | Token | 浅色 | 暗色 | 用途 |
 |-------|------|------|------|
-| `--j13-bg` | `#f4f8fa` | `#0c1216` | 页底（微青灰） |
-| `--j13-surface` | `#ffffff` | `#152028` | 顶栏、主栏 |
-| `--j13-text` | `#14212b` | `#e8eef2` | 正文 |
-| `--j13-muted` | `#5a6b75` | `#8b9aab` | 次要 |
-| `--j13-accent` | `#0e8a9a` | `#2ec4d6` | 链接 / 主按钮 / 分段 active |
-| `--j13-accent-ink` | `#0b5f6b` | `#9ae8f0` | 品牌字、强强调 |
-| `--j13-soft` | `#e6f7f9` | `#12343a` | 侧栏 active 底、focus ring |
-| `--j13-on-accent` | `#ffffff` | `#0b5f6b` | 主按钮字 |
-| `--j13-border` | `#d3e0e6` | `#2a3a44` | 分隔 |
-| `--j13-hover` | `#e8f4f6` | `#1c2d36` | 行 hover |
+| `--j13-bg` / page | `#f5f7fa` | `#141416` | 页底 |
+| `--j13-surface` | `#ffffff` | `#1f1f23` | 顶栏、主栏 |
+| `--j13-accent` / green | `#18a058` | `#23c36b` | 主色（对齐 main SPA） |
+| `--j13-accent-ink` | `#138f4c` | `#6ee7a0` | 强强调 |
+| `--j13-soft` / green-bg | `#edfbf3` / `rgba(24,160,88,.08)` | 绿 soft | active / hover |
+| `--j13-border` | `#e8edf2` | `#2e2e32` | 分隔 |
 
 语义色（ok / warn / err / pin / feat）随主题成对定义；feat 用青 soft，不用草绿。
 
@@ -73,7 +69,7 @@
 
 | 断点 | 行为 |
 |------|------|
-| ≥901px | 三栏：左 ~200px / 中 1fr / 右 ~260px；总宽 ~1320px |
+| ≥901px | 三栏：左 210px / 中 1fr / 右 280px；总宽 ~1400px（对齐 SPA） |
 | ≤900px | 隐藏右栏；顶栏搜索折行（抽屉化 **下一刀**） |
 
 ---
@@ -82,12 +78,11 @@
 
 | 组件 | 规则 |
 |------|------|
-| 顶栏 | 品牌 \| 搜索条 \|「+ 发帖」主按钮 + 主题 + 私信 + 用户 +「更多」；告别链接墙 |
-| 左栏 | 分区「浏览 / 板块」；active = soft 底 + 左边青条 |
-| Feed 行 | 头像 · 作者+相对时间 / 标题 / 摘要（最多 2 行）/ 标签 · 右栏回复/赞/阅读；细线分隔非卡片墙 |
-| 高级搜索 | `<details>` 默认收起；有筛选条件或错误时展开；顶栏搜索仍 `/?keyword=` |
-| 排序 | 分段控件 |
-| 标签 / 按钮 / 评论 / 门控 | 同青 token |
+| 顶栏 | SPA：品牌 \| 搜索胶囊（筛选钮 + Ctrl+K）\| 发帖绿钮 \| 主题/私信/头像菜单 |
+| 左栏 | 浏览 / 板块；active 绿底；板块色槽 + 帖数 |
+| Feed 行 | `post-row--v2`：头像 · 徽章+标题 · 摘要（依 feed_list_style）· 元信息 · 回复数 |
+| 高级搜索 | 顶栏筛选打开；有条件时 details 展开 |
+| 排序 | SPA `feed-sort-tab` 绿 active |
 
 ---
 
diff --git a/public/assets/site.css b/public/assets/site.css
index d31a68f..99e1102 100644
--- a/public/assets/site.css
+++ b/public/assets/site.css
@@ -1,16 +1,16 @@
-/* 姜十三论坛公开页样式 — 对齐 docs/rebuild-spec/10-design-system.md（清青产品） */
+/* 姜十三论坛公开页样式 — 对齐 main SPA 首页视觉（草绿产品壳） */
 :root {
   color-scheme: light;
-  --j13-bg: #f4f8fa;
+  --j13-bg: #f5f7fa;
   --j13-surface: #ffffff;
   --j13-text: #14212b;
   --j13-muted: #5a6b75;
-  --j13-accent: #0e8a9a;
-  --j13-accent-ink: #0b5f6b;
+  --j13-accent: #18a058;
+  --j13-accent-ink: #138f4c;
   --j13-on-accent: #ffffff;
-  --j13-soft: #e6f7f9;
-  --j13-border: #d3e0e6;
-  --j13-hover: #e8f4f6;
+  --j13-soft: #edfbf3;
+  --j13-border: #e8edf2;
+  --j13-hover: #f0faf5;
   --j13-radius: 8px;
   --j13-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", system-ui, sans-serif;
   --j13-font-mono: "Cascadia Code", "Consolas", "SF Mono", ui-monospace, monospace;
@@ -25,34 +25,34 @@
   --j13-err-border: #fecaca;
   --j13-pin-bg: #fef3c7;
   --j13-pin-fg: #92400e;
-  --j13-feat-bg: #e6f7f9;
-  --j13-feat-fg: #0b5f6b;
+  --j13-feat-bg: #edfbf3;
+  --j13-feat-fg: #138f4c;
   --j13-neutral-bg: #eef2f6;
   --j13-neutral-fg: #475569;
-  --j13-self-bg: #e6f7f9;
-  --j13-self-border: #7dd3de;
+  --j13-self-bg: #edfbf3;
+  --j13-self-border: #86efac;
   --j13-delta-pos: #15803d;
   --j13-delta-neg: #b91c1c;
   --j13-overlay: rgba(244, 248, 250, 0.92);
   --j13-header-shadow: 0 1px 0 var(--j13-border), 0 6px 18px rgba(11, 95, 107, 0.06);
   --j13-ease: 150ms ease;
-  --j13-frame: 1320px;
+  --j13-frame: 1400px;
   --j13-header-h: 3.5rem;
 }
 
 @media (prefers-color-scheme: dark) {
   :root {
     color-scheme: dark;
-    --j13-bg: #0c1216;
-    --j13-surface: #152028;
+    --j13-bg: #141416;
+    --j13-surface: #1f1f23;
     --j13-text: #e8eef2;
     --j13-muted: #8b9aab;
-    --j13-accent: #2ec4d6;
-    --j13-accent-ink: #9ae8f0;
-    --j13-on-accent: #0b5f6b;
-    --j13-soft: #12343a;
-    --j13-border: #2a3a44;
-    --j13-hover: #1c2d36;
+    --j13-accent: #23c36b;
+    --j13-accent-ink: #6ee7a0;
+    --j13-on-accent: #138f4c;
+    --j13-soft: rgba(35, 195, 107, 0.08);
+    --j13-border: #2e2e32;
+    --j13-hover: #232328;
     --j13-danger: #f87171;
     --j13-ok-bg: #064e3b;
     --j13-ok-fg: #a7f3d0;
@@ -64,12 +64,12 @@
     --j13-err-border: #991b1b;
     --j13-pin-bg: #78350f;
     --j13-pin-fg: #fde68a;
-    --j13-feat-bg: #0b5f6b;
-    --j13-feat-fg: #9ae8f0;
+    --j13-feat-bg: #138f4c;
+    --j13-feat-fg: #6ee7a0;
     --j13-neutral-bg: #243040;
     --j13-neutral-fg: #cbd5e1;
-    --j13-self-bg: #0b5f6b;
-    --j13-self-border: #0e8a9a;
+    --j13-self-bg: #138f4c;
+    --j13-self-border: #18a058;
     --j13-delta-pos: #4ade80;
     --j13-delta-neg: #f87171;
     --j13-overlay: rgba(12, 18, 22, 0.9);
@@ -79,16 +79,16 @@
 
 html[data-theme="light"] {
   color-scheme: light;
-  --j13-bg: #f4f8fa;
+  --j13-bg: #f5f7fa;
   --j13-surface: #ffffff;
   --j13-text: #14212b;
   --j13-muted: #5a6b75;
-  --j13-accent: #0e8a9a;
-  --j13-accent-ink: #0b5f6b;
+  --j13-accent: #18a058;
+  --j13-accent-ink: #138f4c;
   --j13-on-accent: #ffffff;
-  --j13-soft: #e6f7f9;
-  --j13-border: #d3e0e6;
-  --j13-hover: #e8f4f6;
+  --j13-soft: #edfbf3;
+  --j13-border: #e8edf2;
+  --j13-hover: #f0faf5;
   --j13-danger: #b91c1c;
   --j13-ok-bg: #ecfdf5;
   --j13-ok-fg: #065f46;
@@ -100,12 +100,12 @@ html[data-theme="light"] {
   --j13-err-border: #fecaca;
   --j13-pin-bg: #fef3c7;
   --j13-pin-fg: #92400e;
-  --j13-feat-bg: #e6f7f9;
-  --j13-feat-fg: #0b5f6b;
+  --j13-feat-bg: #edfbf3;
+  --j13-feat-fg: #138f4c;
   --j13-neutral-bg: #eef2f6;
   --j13-neutral-fg: #475569;
-  --j13-self-bg: #e6f7f9;
-  --j13-self-border: #7dd3de;
+  --j13-self-bg: #edfbf3;
+  --j13-self-border: #86efac;
   --j13-delta-pos: #15803d;
   --j13-delta-neg: #b91c1c;
   --j13-overlay: rgba(244, 248, 250, 0.92);
@@ -114,16 +114,16 @@ html[data-theme="light"] {
 
 html[data-theme="dark"] {
   color-scheme: dark;
-  --j13-bg: #0c1216;
-  --j13-surface: #152028;
+  --j13-bg: #141416;
+  --j13-surface: #1f1f23;
   --j13-text: #e8eef2;
   --j13-muted: #8b9aab;
-  --j13-accent: #2ec4d6;
-  --j13-accent-ink: #9ae8f0;
-  --j13-on-accent: #0b5f6b;
-  --j13-soft: #12343a;
-  --j13-border: #2a3a44;
-  --j13-hover: #1c2d36;
+  --j13-accent: #23c36b;
+  --j13-accent-ink: #6ee7a0;
+  --j13-on-accent: #138f4c;
+  --j13-soft: rgba(35, 195, 107, 0.08);
+  --j13-border: #2e2e32;
+  --j13-hover: #232328;
   --j13-danger: #f87171;
   --j13-ok-bg: #064e3b;
   --j13-ok-fg: #a7f3d0;
@@ -135,12 +135,12 @@ html[data-theme="dark"] {
   --j13-err-border: #991b1b;
   --j13-pin-bg: #78350f;
   --j13-pin-fg: #fde68a;
-  --j13-feat-bg: #0b5f6b;
-  --j13-feat-fg: #9ae8f0;
+  --j13-feat-bg: #138f4c;
+  --j13-feat-fg: #6ee7a0;
   --j13-neutral-bg: #243040;
   --j13-neutral-fg: #cbd5e1;
-  --j13-self-bg: #0b5f6b;
-  --j13-self-border: #0e8a9a;
+  --j13-self-bg: #138f4c;
+  --j13-self-border: #18a058;
   --j13-delta-pos: #4ade80;
   --j13-delta-neg: #f87171;
   --j13-overlay: rgba(12, 18, 22, 0.9);
@@ -219,11 +219,11 @@ code, pre, .j13-md-editor__input {
   letter-spacing: -0.02em;
 }
 html[data-theme="dark"] .j13-brand__mark {
-  color: #0c1216;
+  color: #141416;
 }
 @media (prefers-color-scheme: dark) {
   html:not([data-theme="light"]) .j13-brand__mark {
-    color: #0c1216;
+    color: #141416;
   }
 }
 .j13-brand__logo {
@@ -1792,3 +1792,567 @@ points-only[data-locked="false"] {
 }
 .j13-rev-item a:hover strong { color: var(--j13-accent); }
 .j13-rev-snapshot { margin-top: 1rem; }
+/* —— main SPA 首页壳层对齐覆盖 —— */
+:root {
+  --j13-green: #18a058;
+  --j13-green-hover: #138f4c;
+  --j13-green-bg: rgba(24, 160, 88, 0.08);
+  --j13-green-soft: #edfbf3;
+  --j13-border-light: #f0f3f7;
+  --j13-sidebar-w: 210px;
+  --j13-aside-w: 280px;
+  --j13-header-h: 56px;
+  --j13-max-w: 1400px;
+  --j13-bg-page: #f5f7fa;
+  --j13-bg-block-muted: #f1f4f8;
+  --j13-bg-block-accent: #f0faf5;
+  --board-0-color: #18a058; --board-0-bg: rgba(24,160,88,.1);
+  --board-1-color: #3498db; --board-1-bg: rgba(52,152,219,.1);
+  --board-2-color: #9b59b6; --board-2-bg: rgba(155,89,182,.1);
+  --board-3-color: #e67e22; --board-3-bg: rgba(230,126,34,.1);
+  --board-4-color: #e74c3c; --board-4-bg: rgba(231,76,60,.1);
+  --board-5-color: #1abc9c; --board-5-bg: rgba(26,188,156,.1);
+  --board-6-color: #6366f1; --board-6-bg: rgba(99,102,241,.1);
+  --board-7-color: #f59e0b; --board-7-bg: rgba(245,158,11,.12);
+  --j13-frame: var(--j13-max-w);
+}
+html[data-theme="dark"] {
+  --j13-green: #23c36b;
+  --j13-green-hover: #1fb35f;
+  --j13-green-bg: rgba(35,195,107,.12);
+  --j13-green-soft: rgba(35,195,107,.08);
+  --j13-border-light: #262629;
+  --j13-bg-page: #141416;
+  --j13-bg-block-muted: #1c1c20;
+  --j13-bg-block-accent: rgba(35,195,107,.06);
+}
+@media (prefers-color-scheme: dark) {
+  html:not([data-theme="light"]) {
+    --j13-green: #23c36b;
+    --j13-green-hover: #1fb35f;
+    --j13-green-bg: rgba(35,195,107,.12);
+    --j13-green-soft: rgba(35,195,107,.08);
+    --j13-border-light: #262629;
+    --j13-bg-page: #141416;
+    --j13-bg-block-muted: #1c1c20;
+    --j13-bg-block-accent: rgba(35,195,107,.06);
+  }
+}
+
+body.j13-body {
+  background:
+    radial-gradient(ellipse 70% 45% at 50% -10%, rgba(24, 160, 88, 0.07), transparent 70%),
+    var(--j13-bg-page);
+  font-size: 14px;
+}
+html[data-theme="dark"] body.j13-body {
+  background:
+    radial-gradient(ellipse 70% 45% at 50% -10%, rgba(35, 195, 107, 0.08), transparent 70%),
+    var(--j13-bg-page);
+}
+@media (prefers-color-scheme: dark) {
+  html:not([data-theme="light"]) body.j13-body {
+    background:
+      radial-gradient(ellipse 70% 45% at 50% -10%, rgba(35, 195, 107, 0.08), transparent 70%),
+      var(--j13-bg-page);
+  }
+}
+
+.j13-header.app-header {
+  height: var(--j13-header-h);
+  box-shadow: none;
+}
+.j13-header__inner.header-inner {
+  max-width: var(--j13-max-w);
+  height: 100%;
+  min-height: var(--j13-header-h);
+  padding: 0 20px;
+  display: flex;
+  grid-template-columns: none;
+  gap: 20px;
+}
+.header-brand { gap: 10px; }
+.header-logo-mark,
+.j13-brand__mark.header-logo-mark {
+  width: 34px;
+  height: 34px;
+  border-radius: 10px;
+  background: linear-gradient(135deg, var(--j13-green) 0%, #34c471 100%);
+  color: #fff;
+  font-size: 17px;
+}
+.header-logo-text {
+  font-size: 15px;
+  font-weight: 600;
+  color: var(--j13-text);
+  letter-spacing: 0.02em;
+}
+.header-brand:hover .header-logo-text { color: var(--j13-green); }
+.j13-brand__text { display: none; }
+
+.header-search-wrap {
+  flex: 1;
+  min-width: 0;
+  max-width: 420px;
+  margin: 0;
+  display: flex;
+  align-items: center;
+  min-height: 36px;
+  padding: 0 10px 0 12px;
+  border: 1px solid var(--j13-border);
+  border-radius: 999px;
+  background: var(--j13-bg-block-muted);
+  transition: border-color var(--j13-ease), box-shadow var(--j13-ease), background var(--j13-ease);
+}
+.header-search-wrap:focus-within {
+  background: var(--j13-surface);
+  border-color: color-mix(in srgb, var(--j13-green) 30%, transparent);
+  box-shadow: 0 0 0 3px var(--j13-green-bg);
+}
+.header-search-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  width: 100%;
+}
+.header-search-icon { color: var(--j13-muted); flex-shrink: 0; }
+.header-search-input {
+  flex: 1;
+  min-width: 0;
+  border: 0;
+  outline: none;
+  background: transparent;
+  font: inherit;
+  font-size: 14px;
+  color: var(--j13-text);
+  padding: 0;
+  max-width: none;
+  margin: 0;
+  border-radius: 0;
+}
+.header-search-filter-btn {
+  flex-shrink: 0;
+  width: 28px;
+  height: 28px;
+  border: 0;
+  border-radius: 999px;
+  background: transparent;
+  color: var(--j13-muted);
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+.header-search-filter-btn:hover,
+.header-search-filter-btn--active {
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+}
+.header-search-kbd {
+  display: none;
+  padding: 2px 6px;
+  border-radius: 4px;
+  border: 1px solid var(--j13-border-light);
+  background: var(--j13-surface);
+  font-size: 10px;
+  color: var(--j13-muted);
+  font-family: inherit;
+}
+@media (min-width: 1100px) {
+  .header-search-kbd { display: inline-flex; }
+}
+
+.header-actions {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-left: auto;
+  flex-shrink: 0;
+}
+.header-compose-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  height: 34px;
+  padding: 0 16px;
+  border: none;
+  border-radius: 999px;
+  background: var(--j13-green);
+  color: #fff;
+  font: inherit;
+  font-size: 13px;
+  font-weight: 600;
+  text-decoration: none;
+  box-shadow: 0 2px 8px rgba(26, 127, 75, 0.22);
+  transition: background var(--j13-ease), box-shadow var(--j13-ease), transform var(--j13-ease);
+}
+.header-compose-btn:hover {
+  background: var(--j13-green-hover);
+  color: #fff;
+  text-decoration: none;
+  box-shadow: 0 3px 10px rgba(26, 127, 75, 0.3);
+}
+.header-action-group {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 3px;
+  border-radius: 999px;
+  background: var(--j13-bg-block-muted);
+  border: 1px solid var(--j13-border-light);
+}
+.header-icon-btn {
+  position: relative;
+  width: 32px;
+  height: 32px;
+  border: none;
+  border-radius: 50%;
+  background: transparent;
+  color: var(--j13-muted);
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  text-decoration: none;
+  padding: 0;
+}
+.header-icon-btn:hover {
+  background: var(--j13-hover);
+  color: var(--j13-text);
+}
+.header-icon-btn .j13-badge {
+  position: absolute;
+  top: -2px;
+  right: -2px;
+  font-size: 10px;
+  min-width: 1rem;
+  padding: 0 4px;
+}
+.header-user-btn {
+  width: 32px;
+  height: 32px;
+  border: none;
+  border-radius: 50%;
+  padding: 0;
+  cursor: pointer;
+  overflow: hidden;
+  background: var(--j13-green);
+  list-style: none;
+  display: grid;
+  place-items: center;
+}
+.header-user-btn::-webkit-details-marker { display: none; }
+.header-user-avatar { width: 100%; height: 100%; object-fit: cover; }
+.header-user-initial { color: #fff; font-size: 14px; font-weight: 600; }
+.header-login-btn {
+  height: 32px;
+  padding: 0 14px;
+  border-radius: 999px;
+  color: var(--j13-green);
+  font-size: 13px;
+  font-weight: 500;
+  text-decoration: none;
+  display: inline-flex;
+  align-items: center;
+}
+.header-login-btn:hover { background: var(--j13-green-bg); }
+.header-user-menu > summary { list-style: none; }
+.j13-theme-toggle.header-icon-btn {
+  border: 0;
+  border-radius: 50%;
+  padding: 0;
+  width: 32px;
+  height: 32px;
+}
+
+.j13-layout {
+  max-width: var(--j13-max-w);
+  grid-template-columns: var(--j13-sidebar-w) minmax(0, 1fr) var(--j13-aside-w);
+  gap: 0;
+  padding: 0;
+  background: var(--j13-surface);
+  border-left: 1px solid var(--j13-border-light);
+  border-right: 1px solid var(--j13-border-light);
+  min-height: calc(100vh - var(--j13-header-h) - 4rem);
+}
+.j13-aside--left.sidebar {
+  width: var(--j13-sidebar-w);
+  border-right: 1px solid var(--j13-border-light);
+  padding: 12px 0;
+  position: sticky;
+  top: var(--j13-header-h);
+  max-height: calc(100vh - var(--j13-header-h));
+  overflow-y: auto;
+}
+.j13-aside--right {
+  width: var(--j13-aside-w);
+  border-left: 1px solid var(--j13-border-light);
+  padding: 12px;
+  gap: 10px;
+}
+.j13-main {
+  border: 0;
+  border-radius: 0;
+  padding: 0;
+  background: var(--j13-surface);
+}
+.sidebar-section {
+  margin: 0;
+  padding: 4px 12px 8px;
+  font-size: 11px;
+  font-weight: 600;
+  color: var(--j13-muted);
+  text-transform: none;
+  letter-spacing: 0;
+}
+.sidebar-section--boards { margin-top: 8px; }
+.sidebar-nav {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  padding: 0 8px;
+}
+.sidebar-nav-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  height: 36px;
+  padding: 0 12px;
+  border-radius: 8px;
+  color: var(--j13-text);
+  text-decoration: none;
+  font-size: 13px;
+  border-left: 0;
+}
+.sidebar-nav-item:hover { background: var(--j13-bg-block-muted); color: var(--j13-text); }
+.sidebar-nav-item.active {
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+  font-weight: 600;
+}
+.sidebar-nav-item__meta {
+  margin-left: auto;
+  color: var(--j13-muted);
+  font-size: 11px;
+  font-variant-numeric: tabular-nums;
+}
+.sidebar-board-icon { font-size: 10px; opacity: 0.88; }
+.sidebar-board-icon--0 { color: var(--board-0-color); }
+.sidebar-board-icon--1 { color: var(--board-1-color); }
+.sidebar-board-icon--2 { color: var(--board-2-color); }
+.sidebar-board-icon--3 { color: var(--board-3-color); }
+.sidebar-board-icon--4 { color: var(--board-4-color); }
+.sidebar-board-icon--5 { color: var(--board-5-color); }
+.sidebar-board-icon--6 { color: var(--board-6-color); }
+.sidebar-board-icon--7 { color: var(--board-7-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-0 { background: var(--board-0-bg); color: var(--board-0-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-1 { background: var(--board-1-bg); color: var(--board-1-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-2 { background: var(--board-2-bg); color: var(--board-2-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-3 { background: var(--board-3-bg); color: var(--board-3-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-4 { background: var(--board-4-bg); color: var(--board-4-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-5 { background: var(--board-5-bg); color: var(--board-5-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-6 { background: var(--board-6-bg); color: var(--board-6-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-7 { background: var(--board-7-bg); color: var(--board-7-color); }
+
+.j13-aside__section, .j13-aside__link { display: none; }
+
+.feed-toolbar {
+  display: flex;
+  align-items: center;
+  padding: 10px 16px;
+  border-bottom: 1px solid var(--j13-border-light);
+  margin: 0;
+}
+.feed-sort-bar {
+  display: flex;
+  gap: 2px;
+  border: 0;
+  padding: 0;
+  background: transparent;
+  border-radius: 0;
+}
+.feed-sort-tab {
+  display: inline-flex;
+  align-items: center;
+  height: 28px;
+  padding: 0 10px;
+  border-radius: 6px;
+  color: var(--j13-muted);
+  text-decoration: none;
+  font-size: 13px;
+  background: transparent;
+}
+.feed-sort-tab:hover { background: var(--j13-bg-block-muted); color: var(--j13-text); }
+.feed-sort-tab.active,
+.feed-sort-tab.is-active {
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+  font-weight: 600;
+}
+
+.j13-search-advanced {
+  margin: 0;
+  padding: 0 16px 10px;
+  border-bottom: 1px solid var(--j13-border-light);
+}
+.post-list { list-style: none; margin: 0; padding: 0; }
+.post-row {
+  display: flex;
+  align-items: flex-start;
+  gap: 12px;
+  width: 100%;
+  padding: 16px 20px;
+  border-bottom: 1px solid var(--j13-border-light);
+  border-radius: 0;
+  margin: 0;
+  border-top: 0;
+  background: transparent;
+  transition: background var(--j13-ease);
+}
+.post-row:hover { background: var(--j13-bg-block-accent); }
+.post-row--v2 { padding: 8px 16px; gap: 8px; }
+.post-row--v2.post-row--title-only { padding: 12px 16px; }
+.post-avatar {
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  overflow: hidden;
+  flex-shrink: 0;
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+  display: grid;
+  place-items: center;
+  font-weight: 600;
+  font-size: 14px;
+}
+.post-avatar img { width: 100%; height: 100%; object-fit: cover; }
+.post-main {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+.post-main--with-thumb {
+  flex-direction: row;
+  align-items: stretch;
+  gap: 10px;
+}
+.post-content { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 2px; }
+.post-title-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
+.post-title {
+  color: var(--j13-text);
+  text-decoration: none;
+  font-weight: 600;
+  font-size: 15px;
+  line-height: 1.4;
+  letter-spacing: 0;
+}
+.post-row:hover .post-title { color: var(--j13-green); }
+.post-excerpt {
+  margin: 0;
+  font-size: 13px;
+  line-height: 1.45;
+  color: var(--j13-muted);
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+}
+.post-meta--inline { display: flex; margin-top: 2px; }
+.post-meta-left {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 4px 6px;
+  font-size: 12px;
+  color: var(--j13-muted);
+  min-width: 0;
+}
+.post-meta-author { color: var(--j13-muted); text-decoration: none; font-weight: 500; }
+.post-meta-author:hover { color: var(--j13-green); }
+.post-meta-sep { opacity: 0.6; }
+.post-meta-last-reply { display: inline-flex; gap: 4px; align-items: center; }
+.post-list-board-badge {
+  display: inline-flex;
+  align-items: center;
+  height: 20px;
+  padding: 0 6px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 600;
+  text-decoration: none;
+  background: var(--board-0-bg);
+  color: var(--board-0-color);
+}
+.board-badge--1 { background: var(--board-1-bg); color: var(--board-1-color); }
+.board-badge--2 { background: var(--board-2-bg); color: var(--board-2-color); }
+.board-badge--3 { background: var(--board-3-bg); color: var(--board-3-color); }
+.board-badge--4 { background: var(--board-4-bg); color: var(--board-4-color); }
+.board-badge--5 { background: var(--board-5-bg); color: var(--board-5-color); }
+.board-badge--6 { background: var(--board-6-bg); color: var(--board-6-color); }
+.board-badge--7 { background: var(--board-7-bg); color: var(--board-7-color); }
+.post-pin-badge,
+.post-feature-badge {
+  display: inline-flex;
+  align-items: center;
+  height: 20px;
+  padding: 0 6px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 600;
+  background: #fef3c7;
+  color: #92400e;
+}
+.post-feature-badge { background: var(--j13-green-bg); color: var(--j13-green); }
+.post-pin-badge--board { background: #e0f2fe; color: #075985; }
+.post-aside { display: flex; align-items: flex-end; gap: 10px; flex-shrink: 0; }
+.post-thumb {
+  width: 64px;
+  height: 48px;
+  border-radius: 4px;
+  overflow: hidden;
+  background: var(--j13-bg-block-muted);
+  display: block;
+}
+.post-thumb img { width: 100%; height: 100%; object-fit: cover; }
+.post-stats {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  color: var(--j13-muted);
+  font-variant-numeric: tabular-nums;
+}
+.post-stat { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
+
+.j13-post-item { display: none; } /* 旧列表类停用 */
+
+.j13-widget,
+.j13-checkin {
+  border: 1px solid var(--j13-border-light);
+  border-radius: 10px;
+  background: var(--j13-surface);
+  padding: 12px;
+  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
+}
+.j13-widget__title {
+  text-transform: none;
+  letter-spacing: 0;
+  font-size: 13px;
+  color: var(--j13-text);
+  font-weight: 600;
+}
+.j13-btn, .j13-btn--compose, .header-compose-btn {
+  background: var(--j13-green);
+  border-color: var(--j13-green);
+}
+.j13-btn:hover { background: var(--j13-green-hover); border-color: var(--j13-green-hover); }
+a { color: var(--j13-green); }
+
+@media (max-width: 900px) {
+  .j13-layout { grid-template-columns: var(--j13-sidebar-w) minmax(0, 1fr); }
+  .j13-aside--right { display: none; }
+  .j13-header__inner.header-inner { display: flex; flex-wrap: wrap; }
+  .header-search-wrap { order: 3; flex: 1 1 100%; max-width: none; }
+}
diff --git a/public/assets/site.js b/public/assets/site.js
index c95e977..1da4677 100644
--- a/public/assets/site.js
+++ b/public/assets/site.js
@@ -60,6 +60,33 @@ document.documentElement.dataset.j13Ssr = "1";
   }
 })();
 
+(function headerSearchUX() {
+  var input = document.getElementById("j13-header-search-input");
+  var filterBtn = document.getElementById("j13-search-filter-btn");
+  var advanced = document.getElementById("search");
+  if (filterBtn && advanced) {
+    filterBtn.addEventListener("click", function () {
+      advanced.open = true;
+      filterBtn.classList.add("header-search-filter-btn--active");
+      var kw = advanced.querySelector('input[name="keyword"]');
+      if (kw) kw.focus();
+      advanced.scrollIntoView({ behavior: "smooth", block: "nearest" });
+    });
+  }
+  document.addEventListener("keydown", function (e) {
+    if (!(e.ctrlKey || e.metaKey) || (e.key !== "k" && e.key !== "K")) return;
+    var tag = (e.target && e.target.tagName) || "";
+    if (tag === "INPUT" || tag === "TEXTAREA" || (e.target && e.target.isContentEditable)) {
+      if (e.target === input) return;
+    }
+    e.preventDefault();
+    if (input) {
+      input.focus();
+      input.select();
+    }
+  });
+})();
+
 (function mdEditors() {
   function insertAtCursor(textarea, text) {
     const start = textarea.selectionStart || 0;
diff --git a/routers/web/chrome.go b/routers/web/chrome.go
index 26a551a..b3713d9 100644
--- a/routers/web/chrome.go
+++ b/routers/web/chrome.go
@@ -44,9 +44,11 @@ type SitePageLink struct {
 
 // BoardView 侧栏
 type BoardView struct {
-	ID   uint
-	Name string
-	Href string
+	ID        uint
+	Name      string
+	Href      string
+	PostCount int
+	ColorSlot int // 0–7 板块色槽
 }
 
 // RightAsideHotPost 右栏热门帖
@@ -122,6 +124,8 @@ type PageChrome struct {
 	LoggedIn              bool
 	IsAdmin               bool
 	ViewerName            string
+	ViewerAvatar          string
+	ViewerMark            string
 	Boards                []BoardView
 	ActiveBoard           uint
 	Path                  string // 当前请求路径，供侧栏高亮
@@ -158,19 +162,30 @@ func (d Deps) chrome(ctx *webctx.Context, title, desc, inner string) PageChrome
 			name = ctx.Doer.Username
 		}
 	}
-	boards, _ := d.Board.List()
+	boards, _ := d.Board.ListWithStats()
 	bv := make([]BoardView, 0, len(boards))
 	pl := d.permalink()
 	for _, b := range boards {
-		bv = append(bv, BoardView{ID: b.ID, Name: b.Name, Href: pl.BoardPath(b.ID)})
+		slot := b.ColorIndex
+		if slot < 0 {
+			slot = int(b.ID % 8)
+		}
+		bv = append(bv, BoardView{
+			ID: b.ID, Name: b.Name, Href: pl.BoardPath(b.ID),
+			PostCount: b.PostCount, ColorSlot: slot % 8,
+		})
 	}
 	var unread int64
 	if ctx.IsSigned() && d.Message != nil {
 		unread, _ = d.Message.UnreadCount(ctx.UserID())
 	}
 	viewerPoints := 0
+	viewerAvatar := ""
+	viewerMark := "我"
 	if ctx.IsSigned() && ctx.Doer != nil {
 		viewerPoints = ctx.Doer.Points
+		viewerAvatar = strings.TrimSpace(ctx.Doer.Avatar)
+		viewerMark = firstRuneOr(name, "我")
 	}
 	path := ""
 	if ctx.C != nil && ctx.C.Request != nil && ctx.C.Request.URL != nil {
@@ -195,6 +210,8 @@ func (d Deps) chrome(ctx *webctx.Context, title, desc, inner string) PageChrome
 		LoggedIn:              ctx.IsSigned(),
 		IsAdmin:               ctx.IsAdmin(),
 		ViewerName:            name,
+		ViewerAvatar:          viewerAvatar,
+		ViewerMark:            viewerMark,
 		Boards:                bv,
 		Path:                  path,
 		Inner:                 inner,
diff --git a/routers/web/home.go b/routers/web/home.go
index b36d763..4bacc28 100644
--- a/routers/web/home.go
+++ b/routers/web/home.go
@@ -148,40 +148,52 @@ func Register(r *gin.Engine, deps Deps, authMW *auth.AuthMiddleware) {
 // HomePageData Feed
 type HomePageData struct {
 	PageChrome
-	BoardName   string
-	Sort        string
-	Keyword     string
-	Tag         string
-	Author      string
-	TitleOnly   bool
-	HasSearch   bool
-	SearchError string
-	Posts       []PostListItem
-	Page        int
-	PrevPage    int
-	NextPage    int
-	HasPrev     bool
-	HasMore     bool
+	BoardName     string
+	Sort          string
+	Keyword       string
+	Tag           string
+	Author        string
+	TitleOnly     bool
+	HasSearch     bool
+	SearchError   string
+	FeedListStyle string // title|excerpt|thumbnail
+	ShowExcerpt   bool
+	Posts         []PostListItem
+	Page          int
+	PrevPage      int
+	NextPage      int
+	HasPrev       bool
+	HasMore       bool
 }
 
-// PostListItem 列表项
+// PostListItem 列表项（对齐 main SPA post-row--v2）
 type PostListItem struct {
-	ID           uint
-	Title        string
-	Href         string
-	AuthorID     uint
-	AuthorName   string
-	AuthorHref   string
-	AvatarURL    string
-	AuthorMark   string // 无头像时的单字占位
-	BoardName    string
-	Excerpt      string
-	Pinned       bool
-	Featured     bool
-	CommentCount int
-	LikeCount    int
-	ViewCount    int
-	CreatedLabel string
+	ID               uint
+	Title            string
+	Href             string
+	AuthorID         uint
+	AuthorName       string
+	AuthorHref       string
+	AvatarURL        string
+	AuthorMark       string
+	BoardID          uint
+	BoardName        string
+	BoardHref        string
+	BoardColorSlot   int
+	ShowBoardBadge   bool
+	Excerpt          string
+	ThumbURL         string
+	Pinned           bool
+	BoardPinned      bool
+	Featured         bool
+	CommentCount     int
+	LikeCount        int
+	ViewCount        int
+	CreatedLabel     string
+	LastReplyLabel   string
+	LastReplyName    string
+	LastReplyHref    string
+	ShowLastReply    bool
 }
 
 // FormAction 搜索表单提交路径（当前 Feed）
@@ -274,19 +286,24 @@ func (d Deps) Home(c *gin.Context) {
 		chrome.Title = boardName + " · " + chrome.SiteName
 	}
 
+	feedStyle := d.Settings.FeedListStyle()
+	showExcerpt := feedStyle == "excerpt" || feedStyle == "thumbnail"
+
 	data := HomePageData{
-		PageChrome: chrome,
-		BoardName:  boardName,
-		Sort:       sort,
-		Keyword:    keyword,
-		Tag:        tag,
-		Author:     author,
-		TitleOnly:  titleOnly,
-		HasSearch:  hasSearch,
-		Page:       page,
-		PrevPage:   page - 1,
-		NextPage:   page + 1,
-		HasPrev:    page > 1,
+		PageChrome:    chrome,
+		BoardName:     boardName,
+		Sort:          sort,
+		Keyword:       keyword,
+		Tag:           tag,
+		Author:        author,
+		TitleOnly:     titleOnly,
+		HasSearch:     hasSearch,
+		FeedListStyle: feedStyle,
+		ShowExcerpt:   showExcerpt,
+		Page:          page,
+		PrevPage:      page - 1,
+		NextPage:      page + 1,
+		HasPrev:       page > 1,
 	}
 
 	listKW := keyword
@@ -333,14 +350,29 @@ func (d Deps) Home(c *gin.Context) {
 			authorName = it.User.Username
 		}
 		bname := ""
+		boardHref := ""
+		boardSlot := 0
 		if it.Board.ID > 0 {
 			bname = it.Board.Name
+			boardHref = pl.BoardPath(it.Board.ID)
+			boardSlot = it.Board.ColorIndex
+			if boardSlot < 0 {
+				boardSlot = int(it.Board.ID % 8)
+			}
+			boardSlot = boardSlot % 8
 		}
-		excerptSrc := strings.TrimSpace(it.ContentPlain)
-		if excerptSrc == "" {
-			excerptSrc = services.ExcerptFromHTML(it.Content, 100)
-		} else {
-			excerptSrc = services.TruncateRunes(excerptSrc, 100)
+		excerptSrc := ""
+		thumbURL := ""
+		if showExcerpt {
+			excerptSrc = strings.TrimSpace(it.ContentPlain)
+			if excerptSrc == "" {
+				excerptSrc = services.ExcerptFromHTML(it.Content, 60)
+			} else {
+				excerptSrc = services.TruncateRunes(excerptSrc, 60)
+			}
+		}
+		if feedStyle == "thumbnail" {
+			thumbURL = services.FirstImageURL(it.Content)
 		}
 		avatar := strings.TrimSpace(it.User.Avatar)
 		authorID := it.UserID
@@ -348,14 +380,44 @@ func (d Deps) Home(c *gin.Context) {
 		if authorID > 0 {
 			authorHref = pl.UserPath(authorID)
 		}
+		createdLabel := formatRelativeTime(it.CreatedAt)
+		if sort == "reply" && it.LastReplyAt == nil {
+			createdLabel = "暂无回复"
+		}
+		lastReplyName := ""
+		lastReplyHref := ""
+		lastReplyLabel := ""
+		showLast := false
+		if it.LastReplyAt != nil {
+			showLast = true
+			lastReplyLabel = formatRelativeTime(*it.LastReplyAt)
+			if it.LastReplyUser != nil {
+				lastReplyName = strings.TrimSpace(it.LastReplyUser.Nickname)
+				if lastReplyName == "" {
+					lastReplyName = it.LastReplyUser.Username
+				}
+				if it.LastReplyUser.ID > 0 {
+					lastReplyHref = pl.UserPath(it.LastReplyUser.ID)
+				}
+			} else {
+				lastReplyName = strings.TrimSpace(it.LastReplyGuestNick)
+			}
+			if lastReplyName == "" {
+				showLast = false
+			}
+		}
 		posts = append(posts, PostListItem{
 			ID: it.ID, Title: it.Title, Href: pl.PostPath(it.ID),
 			AuthorID: authorID, AuthorName: authorName, AuthorHref: authorHref,
 			AvatarURL: avatar, AuthorMark: firstRuneOr(authorName, "姜"),
-			BoardName: bname, Excerpt: excerptSrc,
-			Pinned: it.Pinned, Featured: it.Featured,
+			BoardID: it.BoardID, BoardName: bname, BoardHref: boardHref,
+			BoardColorSlot: boardSlot, ShowBoardBadge: boardID == 0 && it.Board.ID > 0,
+			Excerpt: excerptSrc, ThumbURL: thumbURL,
+			Pinned: it.Pinned, BoardPinned: it.BoardPinned, Featured: it.Featured,
 			CommentCount: it.CommentCount, LikeCount: it.LikeCount, ViewCount: it.ViewCount,
-			CreatedLabel: formatRelativeTime(it.CreatedAt),
+			CreatedLabel: createdLabel,
+			LastReplyLabel: lastReplyLabel, LastReplyName: lastReplyName,
+			LastReplyHref: lastReplyHref, ShowLastReply: showLast,
 		})
 	}
 
diff --git a/templates/base/navbar.tmpl b/templates/base/navbar.tmpl
index 43bdb60..990a5fd 100644
--- a/templates/base/navbar.tmpl
+++ b/templates/base/navbar.tmpl
@@ -1,56 +1,66 @@
 {{define "base/navbar"}}
-  <header class="j13-header">
-    <div class="j13-header__inner">
-      <a class="j13-brand" href="/">
+  <header class="j13-header app-header">
+    <div class="j13-header__inner header-inner">
+      <a class="j13-brand header-brand" href="/">
         {{if .LogoURL}}
-        <img class="j13-brand__logo" src="{{.LogoURL}}" alt="{{.SiteName}}"/>
+        <img class="j13-brand__logo header-logo-mark" src="{{.LogoURL}}" alt="{{.SiteName}}"/>
         {{else}}
-        <span class="j13-brand__mark">{{.LogoMark}}</span>
+        <span class="j13-brand__mark header-logo-mark">{{.LogoMark}}</span>
         {{end}}
-        <span class="j13-brand__text">
-          <strong>{{.SiteName}}</strong>
-          {{if .Slogan}}<span class="j13-brand__slogan">{{.Slogan}}</span>{{end}}
-        </span>
+        <span class="header-logo-text">{{.SiteName}}</span>
       </a>
-      <form class="j13-header-search" method="get" action="/" role="search">
-        <label class="j13-header-search__label">
-          <span class="j13-visually-hidden">搜索帖子</span>
-          <input type="search" name="keyword" placeholder="搜索帖子…" autocomplete="off"/>
-        </label>
+      <form class="header-search-wrap" method="get" action="/" role="search" id="j13-header-search">
+        <div class="header-search-row">
+          <svg class="header-search-icon" width="15" height="15" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M10.5 3a7.5 7.5 0 015.95 12.1l4.22 4.23a1 1 0 01-1.42 1.41l-4.22-4.22A7.5 7.5 0 1110.5 3zm0 2a5.5 5.5 0 100 11 5.5 5.5 0 000-11z"/></svg>
+          <input class="header-search-input" id="j13-header-search-input" type="search" name="keyword" value="" placeholder="搜索帖子…" autocomplete="off"/>
+          <button type="button" class="header-search-filter-btn" id="j13-search-filter-btn" aria-label="高级筛选" title="高级筛选">
+            <svg width="14" height="14" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M3 5h18v2.17L14 14v5l-4 2v-7L3 7.17V5z"/></svg>
+          </button>
+          <kbd class="header-search-kbd" aria-hidden="true">Ctrl K</kbd>
+        </div>
       </form>
-      <div class="j13-header__actions">
+      <div class="header-actions">
         {{if .LoggedIn}}
-          <a class="j13-btn j13-btn--compose" href="/compose">+ 发帖</a>
+          <a class="header-compose-btn" href="/compose"><span aria-hidden="true">+</span> 发帖</a>
         {{else}}
-          <a class="j13-btn j13-btn--compose" href="/login">登录</a>
-          <a class="j13-header__textlink" href="/register">注册</a>
+          <a class="header-compose-btn" href="/login">登录</a>
         {{end}}
-        <button type="button" class="j13-theme-toggle" id="j13-theme-toggle" aria-label="切换主题" title="切换主题">
-          <svg class="j13-theme-toggle__icon" width="16" height="16" viewBox="0 0 24 24" aria-hidden="true" focusable="false">
-            <path fill="currentColor" d="M12 3a1 1 0 0 1 1 1v1.06a7.5 7.5 0 1 1-2 0V4a1 1 0 0 1 1-1Zm0 4.5a5.5 5.5 0 1 0 0 11 5.5 5.5 0 0 0 0-11Z"/>
-          </svg>
-          <span class="j13-theme-toggle__label">主题</span>
-        </button>
-        {{if .LoggedIn}}
-          <a class="j13-header__iconlink" href="/messages" title="私信">私信{{if gt .UnreadCount 0}} <span class="j13-badge">{{.UnreadCount}}</span>{{end}}</a>
-          <a class="j13-header__user" href="/profile" title="个人中心">{{.ViewerName}}</a>
-        {{end}}
-        <details class="j13-more">
-          <summary>更多</summary>
-          <div class="j13-more__menu" role="menu">
-            <a href="/boards" role="menuitem">板块</a>
-            {{if .ShowFriendLinksNav}}<a href="/links" role="menuitem">友链</a>{{end}}
-            {{range .NavPages}}<a href="/page/{{.Slug}}" role="menuitem">{{.Title}}</a>{{end}}
-            {{if .LoggedIn}}
-              <a href="/favorites" role="menuitem">收藏</a>
-              {{if .IsAdmin}}<a href="/admin/dashboard" role="menuitem">后台</a>{{end}}
-              <form method="post" action="/logout">
-                <input type="hidden" name="_csrf" value="{{.CSRF}}"/>
-                <button type="submit" role="menuitem">退出</button>
-              </form>
-            {{end}}
-          </div>
-        </details>
+        <div class="header-action-group">
+          <button type="button" class="header-icon-btn j13-theme-toggle" id="j13-theme-toggle" aria-label="切换主题" title="切换主题">
+            <svg class="j13-theme-toggle__icon" width="16" height="16" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M21 14.3A8.5 8.5 0 019.7 3 7 7 0 1019 16.5c.7-.6 1.3-1.4 2-2.2z"/></svg>
+            <span class="j13-visually-hidden j13-theme-toggle__label">主题</span>
+          </button>
+          {{if .LoggedIn}}
+            <a class="header-icon-btn" href="/messages" title="私信" aria-label="私信">
+              <svg width="16" height="16" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 4h16a2 2 0 012 2v12a2 2 0 01-2 2H4a2 2 0 01-2-2V6a2 2 0 012-2zm0 2v.51l8 5.33 8-5.33V6H4zm16 3.04l-7.45 4.97a1 1 0 01-1.1 0L4 9.04V18h16V9.04z"/></svg>
+              {{if gt .UnreadCount 0}}<span class="j13-badge">{{.UnreadCount}}</span>{{end}}
+            </a>
+            <details class="j13-more header-user-menu">
+              <summary class="header-user-btn" title="{{.ViewerName}}">
+                {{if .ViewerAvatar}}
+                <img class="header-user-avatar" src="{{.ViewerAvatar}}" alt=""/>
+                {{else}}
+                <span class="header-user-initial">{{.ViewerMark}}</span>
+                {{end}}
+              </summary>
+              <div class="j13-more__menu" role="menu">
+                <a href="/profile" role="menuitem">{{.ViewerName}} · {{.ViewerPoints}} 积分</a>
+                <a href="/favorites" role="menuitem">收藏</a>
+                <a href="/messages" role="menuitem">私信</a>
+                {{if .IsAdmin}}<a href="/admin/dashboard" role="menuitem">后台</a>{{end}}
+                {{if .ShowFriendLinksNav}}<a href="/links" role="menuitem">友链</a>{{end}}
+                {{range .NavPages}}<a href="/page/{{.Slug}}" role="menuitem">{{.Title}}</a>{{end}}
+                <a href="/boards" role="menuitem">板块</a>
+                <form method="post" action="/logout">
+                  <input type="hidden" name="_csrf" value="{{.CSRF}}"/>
+                  <button type="submit" role="menuitem">退出</button>
+                </form>
+              </div>
+            </details>
+          {{else}}
+            <a class="header-login-btn" href="/register">注册</a>
+          {{end}}
+        </div>
       </div>
     </div>
   </header>
diff --git a/templates/home/feed.tmpl b/templates/home/feed.tmpl
index 8bce785..db458a0 100644
--- a/templates/home/feed.tmpl
+++ b/templates/home/feed.tmpl
@@ -1,14 +1,13 @@
 {{define "home/feed"}}
 <section class="j13-feed">
-  <header class="j13-feed__header">
-    <h1 class="j13-feed__title">{{if .BoardName}}{{.BoardName}}{{else}}全部帖子{{end}}</h1>
-    <div class="j13-sort" role="navigation" aria-label="排序">
-      <a class="{{if eq .Sort "latest"}}is-active{{end}}" href="{{.SortHref "latest"}}">最新发帖</a>
-      <a class="{{if eq .Sort "reply"}}is-active{{end}}" href="{{.SortHref "reply"}}">最新回复</a>
-      <a class="{{if eq .Sort "hot"}}is-active{{end}}" href="{{.SortHref "hot"}}">热门讨论</a>
+  <header class="feed-toolbar j13-feed__header">
+    <div class="feed-sort-bar j13-sort" role="tablist" aria-label="排序">
+      <a role="tab" class="feed-sort-tab{{if eq .Sort "latest"}} active is-active{{end}}" href="{{.SortHref "latest"}}">最新发帖</a>
+      <a role="tab" class="feed-sort-tab{{if eq .Sort "reply"}} active is-active{{end}}" href="{{.SortHref "reply"}}">最新回复</a>
+      <a role="tab" class="feed-sort-tab{{if eq .Sort "hot"}} active is-active{{end}}" href="{{.SortHref "hot"}}">热门讨论</a>
     </div>
   </header>
-  <details class="j13-search-advanced" id="search"{{if or .HasSearch .TitleOnly .SearchError}} open{{end}}>
+  <details class="j13-search-advanced post-search-panel" id="search"{{if or .HasSearch .TitleOnly .SearchError}} open{{end}}>
     <summary class="j13-search-advanced__summary">高级搜索</summary>
     <form class="j13-search j13-search--toolbar" method="get" action="{{.FormAction}}" role="search">
       {{if and .Sort (ne .Sort "latest")}}<input type="hidden" name="sort" value="{{.Sort}}"/>{{end}}
@@ -37,34 +36,52 @@
   {{if not .Posts}}
   <p class="j13-empty">{{if .SearchError}}请调整搜索条件后重试。{{else if .HasSearch}}未找到匹配帖子。{{else}}暂无帖子。{{end}}</p>
   {{else}}
-  <ul class="j13-post-list">
+  <ul class="j13-post-list post-list">
     {{range .Posts}}
-    <li class="j13-post-item">
-      <div class="j13-post-item__avatar">
+    <li class="post-row post-row--v2{{if eq $.FeedListStyle "title"}} post-row--title-only{{end}}{{if .ThumbURL}} post-row--has-thumb{{end}}">
+      <div class="post-avatar">
         {{if .AvatarURL}}
-        <img src="{{.AvatarURL}}" alt="" width="40" height="40"/>
+        <img src="{{.AvatarURL}}" alt=""/>
         {{else}}
-        <span class="j13-post-item__mark" aria-hidden="true">{{.AuthorMark}}</span>
+        <span>{{.AuthorMark}}</span>
         {{end}}
       </div>
-      <div class="j13-post-item__body">
-        <div class="j13-post-item__byline">
-          {{if .AuthorHref}}<a href="{{.AuthorHref}}">{{.AuthorName}}</a>{{else}}<span>{{.AuthorName}}</span>{{end}}
-          <span class="j13-post-item__time">{{.CreatedLabel}}</span>
+      <div class="post-main{{if .ThumbURL}} post-main--with-thumb{{end}}">
+        <div class="post-content">
+          <div class="post-title-row">
+            {{if .Pinned}}<span class="post-pin-badge">全局置顶</span>{{end}}
+            {{if .BoardPinned}}<span class="post-pin-badge post-pin-badge--board">板块置顶</span>{{end}}
+            {{if .Featured}}<span class="post-feature-badge">精华</span>{{end}}
+            <a class="post-title" href="{{.Href}}"{{if $.OpenPostsInNewTab}} target="_blank" rel="noopener"{{end}}>{{.Title}}</a>
+          </div>
+          {{if and $.ShowExcerpt .Excerpt}}<p class="post-excerpt">{{.Excerpt}}</p>{{end}}
+          <div class="post-meta post-meta--inline">
+            <div class="post-meta-left">
+              {{if .ShowBoardBadge}}
+              <a class="post-list-board-badge board-badge--{{.BoardColorSlot}}" href="{{.BoardHref}}">{{.BoardName}}</a>
+              {{end}}
+              {{if .AuthorHref}}<a class="post-meta-author" href="{{.AuthorHref}}">{{.AuthorName}}</a>{{else}}<span class="post-meta-author">{{.AuthorName}}</span>{{end}}
+              <span class="post-meta-sep" aria-hidden>·</span>
+              <span class="post-meta-time">{{.CreatedLabel}}</span>
+              {{if .ShowLastReply}}
+              <span class="post-meta-last-reply">
+                <span aria-hidden>←</span>
+                {{if .LastReplyHref}}<a href="{{.LastReplyHref}}">{{.LastReplyName}}</a>{{else}}<span>{{.LastReplyName}}</span>{{end}}
+                <span>{{.LastReplyLabel}}</span>
+              </span>
+              {{end}}
+            </div>
+          </div>
         </div>
-        <a class="j13-post-item__title" href="{{.Href}}"{{if $.OpenPostsInNewTab}} target="_blank" rel="noopener"{{end}}>{{.Title}}</a>
-        {{if .Excerpt}}<p class="j13-post-item__excerpt">{{.Excerpt}}</p>{{end}}
-        <div class="j13-post-item__meta">
-          {{if .Pinned}}<span class="j13-tag j13-tag--pin">置顶</span>{{end}}
-          {{if .Featured}}<span class="j13-tag j13-tag--feat">精华</span>{{end}}
-          {{if .BoardName}}<span class="j13-tag">{{.BoardName}}</span>{{end}}
+        <div class="post-aside">
+          {{if .ThumbURL}}
+          <a class="post-thumb" href="{{.Href}}" tabindex="-1" aria-hidden="true"><img src="{{.ThumbURL}}" alt=""/></a>
+          {{end}}
+          <div class="post-stats">
+            <span class="post-stat" title="回复"><svg width="12" height="12" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 4h16a2 2 0 012 2v9a2 2 0 01-2 2H9l-5 4v-4H4a2 2 0 01-2-2V6a2 2 0 012-2z"/></svg> {{.CommentCount}}</span>
+          </div>
         </div>
       </div>
-      <div class="j13-post-item__stats" aria-label="互动">
-        <span title="回复"><strong>{{.CommentCount}}</strong> 回复</span>
-        <span title="赞"><strong>{{.LikeCount}}</strong> 赞</span>
-        <span title="阅读"><strong>{{.ViewCount}}</strong> 阅读</span>
-      </div>
     </li>
     {{end}}
   </ul>
diff --git a/templates/shared/board_aside.tmpl b/templates/shared/board_aside.tmpl
index 0107d21..12aa044 100644
--- a/templates/shared/board_aside.tmpl
+++ b/templates/shared/board_aside.tmpl
@@ -1,14 +1,22 @@
 {{define "shared/board_aside"}}
-<aside class="j13-aside j13-aside--left">
-  <p class="j13-aside__section">浏览</p>
-  <a class="j13-aside__link{{if and (eq .ActiveBoard 0) (ne .Path "/boards") (ne .Path "/favorites")}} is-active{{end}}" href="/">全部帖子</a>
-  {{if .LoggedIn}}
-  <a class="j13-aside__link{{if eq .Path "/favorites"}} is-active{{end}}" href="/favorites">我的收藏</a>
-  {{end}}
-  <a class="j13-aside__link{{if eq .Path "/boards"}} is-active{{end}}" href="/boards">全部板块</a>
-  <p class="j13-aside__section">板块</p>
-  {{range .Boards}}
-  <a class="j13-aside__link{{if eq $.ActiveBoard .ID}} is-active{{end}}" href="{{.Href}}">{{.Name}}</a>
-  {{end}}
+<aside class="j13-aside j13-aside--left sidebar" aria-label="导航">
+  <p class="sidebar-section">浏览</p>
+  <nav class="sidebar-nav">
+    <a class="sidebar-nav-item{{if and (eq .ActiveBoard 0) (ne .Path "/boards") (ne .Path "/favorites")}} active{{end}}" href="/">全部帖子</a>
+    {{if .LoggedIn}}
+    <a class="sidebar-nav-item{{if eq .Path "/favorites"}} active{{end}}" href="/favorites">我的收藏</a>
+    {{end}}
+    <a class="sidebar-nav-item{{if eq .Path "/boards"}} active{{end}}" href="/boards">全部板块</a>
+  </nav>
+  <p class="sidebar-section sidebar-section--boards">板块</p>
+  <nav class="sidebar-nav">
+    {{range .Boards}}
+    <a class="sidebar-nav-item sidebar-nav-item--board sidebar-nav-item--board-{{.ColorSlot}}{{if eq $.ActiveBoard .ID}} active{{end}}" href="{{.Href}}">
+      <span class="sidebar-board-icon sidebar-board-icon--{{.ColorSlot}}" aria-hidden="true">◆</span>
+      <span>{{.Name}}</span>
+      <span class="sidebar-nav-item__meta">{{.PostCount}}</span>
+    </a>
+    {{end}}
+  </nav>
 </aside>
 {{end}}
diff --git a/web_src/css/site.css b/web_src/css/site.css
index d31a68f..99e1102 100644
--- a/web_src/css/site.css
+++ b/web_src/css/site.css
@@ -1,16 +1,16 @@
-/* 姜十三论坛公开页样式 — 对齐 docs/rebuild-spec/10-design-system.md（清青产品） */
+/* 姜十三论坛公开页样式 — 对齐 main SPA 首页视觉（草绿产品壳） */
 :root {
   color-scheme: light;
-  --j13-bg: #f4f8fa;
+  --j13-bg: #f5f7fa;
   --j13-surface: #ffffff;
   --j13-text: #14212b;
   --j13-muted: #5a6b75;
-  --j13-accent: #0e8a9a;
-  --j13-accent-ink: #0b5f6b;
+  --j13-accent: #18a058;
+  --j13-accent-ink: #138f4c;
   --j13-on-accent: #ffffff;
-  --j13-soft: #e6f7f9;
-  --j13-border: #d3e0e6;
-  --j13-hover: #e8f4f6;
+  --j13-soft: #edfbf3;
+  --j13-border: #e8edf2;
+  --j13-hover: #f0faf5;
   --j13-radius: 8px;
   --j13-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", system-ui, sans-serif;
   --j13-font-mono: "Cascadia Code", "Consolas", "SF Mono", ui-monospace, monospace;
@@ -25,34 +25,34 @@
   --j13-err-border: #fecaca;
   --j13-pin-bg: #fef3c7;
   --j13-pin-fg: #92400e;
-  --j13-feat-bg: #e6f7f9;
-  --j13-feat-fg: #0b5f6b;
+  --j13-feat-bg: #edfbf3;
+  --j13-feat-fg: #138f4c;
   --j13-neutral-bg: #eef2f6;
   --j13-neutral-fg: #475569;
-  --j13-self-bg: #e6f7f9;
-  --j13-self-border: #7dd3de;
+  --j13-self-bg: #edfbf3;
+  --j13-self-border: #86efac;
   --j13-delta-pos: #15803d;
   --j13-delta-neg: #b91c1c;
   --j13-overlay: rgba(244, 248, 250, 0.92);
   --j13-header-shadow: 0 1px 0 var(--j13-border), 0 6px 18px rgba(11, 95, 107, 0.06);
   --j13-ease: 150ms ease;
-  --j13-frame: 1320px;
+  --j13-frame: 1400px;
   --j13-header-h: 3.5rem;
 }
 
 @media (prefers-color-scheme: dark) {
   :root {
     color-scheme: dark;
-    --j13-bg: #0c1216;
-    --j13-surface: #152028;
+    --j13-bg: #141416;
+    --j13-surface: #1f1f23;
     --j13-text: #e8eef2;
     --j13-muted: #8b9aab;
-    --j13-accent: #2ec4d6;
-    --j13-accent-ink: #9ae8f0;
-    --j13-on-accent: #0b5f6b;
-    --j13-soft: #12343a;
-    --j13-border: #2a3a44;
-    --j13-hover: #1c2d36;
+    --j13-accent: #23c36b;
+    --j13-accent-ink: #6ee7a0;
+    --j13-on-accent: #138f4c;
+    --j13-soft: rgba(35, 195, 107, 0.08);
+    --j13-border: #2e2e32;
+    --j13-hover: #232328;
     --j13-danger: #f87171;
     --j13-ok-bg: #064e3b;
     --j13-ok-fg: #a7f3d0;
@@ -64,12 +64,12 @@
     --j13-err-border: #991b1b;
     --j13-pin-bg: #78350f;
     --j13-pin-fg: #fde68a;
-    --j13-feat-bg: #0b5f6b;
-    --j13-feat-fg: #9ae8f0;
+    --j13-feat-bg: #138f4c;
+    --j13-feat-fg: #6ee7a0;
     --j13-neutral-bg: #243040;
     --j13-neutral-fg: #cbd5e1;
-    --j13-self-bg: #0b5f6b;
-    --j13-self-border: #0e8a9a;
+    --j13-self-bg: #138f4c;
+    --j13-self-border: #18a058;
     --j13-delta-pos: #4ade80;
     --j13-delta-neg: #f87171;
     --j13-overlay: rgba(12, 18, 22, 0.9);
@@ -79,16 +79,16 @@
 
 html[data-theme="light"] {
   color-scheme: light;
-  --j13-bg: #f4f8fa;
+  --j13-bg: #f5f7fa;
   --j13-surface: #ffffff;
   --j13-text: #14212b;
   --j13-muted: #5a6b75;
-  --j13-accent: #0e8a9a;
-  --j13-accent-ink: #0b5f6b;
+  --j13-accent: #18a058;
+  --j13-accent-ink: #138f4c;
   --j13-on-accent: #ffffff;
-  --j13-soft: #e6f7f9;
-  --j13-border: #d3e0e6;
-  --j13-hover: #e8f4f6;
+  --j13-soft: #edfbf3;
+  --j13-border: #e8edf2;
+  --j13-hover: #f0faf5;
   --j13-danger: #b91c1c;
   --j13-ok-bg: #ecfdf5;
   --j13-ok-fg: #065f46;
@@ -100,12 +100,12 @@ html[data-theme="light"] {
   --j13-err-border: #fecaca;
   --j13-pin-bg: #fef3c7;
   --j13-pin-fg: #92400e;
-  --j13-feat-bg: #e6f7f9;
-  --j13-feat-fg: #0b5f6b;
+  --j13-feat-bg: #edfbf3;
+  --j13-feat-fg: #138f4c;
   --j13-neutral-bg: #eef2f6;
   --j13-neutral-fg: #475569;
-  --j13-self-bg: #e6f7f9;
-  --j13-self-border: #7dd3de;
+  --j13-self-bg: #edfbf3;
+  --j13-self-border: #86efac;
   --j13-delta-pos: #15803d;
   --j13-delta-neg: #b91c1c;
   --j13-overlay: rgba(244, 248, 250, 0.92);
@@ -114,16 +114,16 @@ html[data-theme="light"] {
 
 html[data-theme="dark"] {
   color-scheme: dark;
-  --j13-bg: #0c1216;
-  --j13-surface: #152028;
+  --j13-bg: #141416;
+  --j13-surface: #1f1f23;
   --j13-text: #e8eef2;
   --j13-muted: #8b9aab;
-  --j13-accent: #2ec4d6;
-  --j13-accent-ink: #9ae8f0;
-  --j13-on-accent: #0b5f6b;
-  --j13-soft: #12343a;
-  --j13-border: #2a3a44;
-  --j13-hover: #1c2d36;
+  --j13-accent: #23c36b;
+  --j13-accent-ink: #6ee7a0;
+  --j13-on-accent: #138f4c;
+  --j13-soft: rgba(35, 195, 107, 0.08);
+  --j13-border: #2e2e32;
+  --j13-hover: #232328;
   --j13-danger: #f87171;
   --j13-ok-bg: #064e3b;
   --j13-ok-fg: #a7f3d0;
@@ -135,12 +135,12 @@ html[data-theme="dark"] {
   --j13-err-border: #991b1b;
   --j13-pin-bg: #78350f;
   --j13-pin-fg: #fde68a;
-  --j13-feat-bg: #0b5f6b;
-  --j13-feat-fg: #9ae8f0;
+  --j13-feat-bg: #138f4c;
+  --j13-feat-fg: #6ee7a0;
   --j13-neutral-bg: #243040;
   --j13-neutral-fg: #cbd5e1;
-  --j13-self-bg: #0b5f6b;
-  --j13-self-border: #0e8a9a;
+  --j13-self-bg: #138f4c;
+  --j13-self-border: #18a058;
   --j13-delta-pos: #4ade80;
   --j13-delta-neg: #f87171;
   --j13-overlay: rgba(12, 18, 22, 0.9);
@@ -219,11 +219,11 @@ code, pre, .j13-md-editor__input {
   letter-spacing: -0.02em;
 }
 html[data-theme="dark"] .j13-brand__mark {
-  color: #0c1216;
+  color: #141416;
 }
 @media (prefers-color-scheme: dark) {
   html:not([data-theme="light"]) .j13-brand__mark {
-    color: #0c1216;
+    color: #141416;
   }
 }
 .j13-brand__logo {
@@ -1792,3 +1792,567 @@ points-only[data-locked="false"] {
 }
 .j13-rev-item a:hover strong { color: var(--j13-accent); }
 .j13-rev-snapshot { margin-top: 1rem; }
+/* —— main SPA 首页壳层对齐覆盖 —— */
+:root {
+  --j13-green: #18a058;
+  --j13-green-hover: #138f4c;
+  --j13-green-bg: rgba(24, 160, 88, 0.08);
+  --j13-green-soft: #edfbf3;
+  --j13-border-light: #f0f3f7;
+  --j13-sidebar-w: 210px;
+  --j13-aside-w: 280px;
+  --j13-header-h: 56px;
+  --j13-max-w: 1400px;
+  --j13-bg-page: #f5f7fa;
+  --j13-bg-block-muted: #f1f4f8;
+  --j13-bg-block-accent: #f0faf5;
+  --board-0-color: #18a058; --board-0-bg: rgba(24,160,88,.1);
+  --board-1-color: #3498db; --board-1-bg: rgba(52,152,219,.1);
+  --board-2-color: #9b59b6; --board-2-bg: rgba(155,89,182,.1);
+  --board-3-color: #e67e22; --board-3-bg: rgba(230,126,34,.1);
+  --board-4-color: #e74c3c; --board-4-bg: rgba(231,76,60,.1);
+  --board-5-color: #1abc9c; --board-5-bg: rgba(26,188,156,.1);
+  --board-6-color: #6366f1; --board-6-bg: rgba(99,102,241,.1);
+  --board-7-color: #f59e0b; --board-7-bg: rgba(245,158,11,.12);
+  --j13-frame: var(--j13-max-w);
+}
+html[data-theme="dark"] {
+  --j13-green: #23c36b;
+  --j13-green-hover: #1fb35f;
+  --j13-green-bg: rgba(35,195,107,.12);
+  --j13-green-soft: rgba(35,195,107,.08);
+  --j13-border-light: #262629;
+  --j13-bg-page: #141416;
+  --j13-bg-block-muted: #1c1c20;
+  --j13-bg-block-accent: rgba(35,195,107,.06);
+}
+@media (prefers-color-scheme: dark) {
+  html:not([data-theme="light"]) {
+    --j13-green: #23c36b;
+    --j13-green-hover: #1fb35f;
+    --j13-green-bg: rgba(35,195,107,.12);
+    --j13-green-soft: rgba(35,195,107,.08);
+    --j13-border-light: #262629;
+    --j13-bg-page: #141416;
+    --j13-bg-block-muted: #1c1c20;
+    --j13-bg-block-accent: rgba(35,195,107,.06);
+  }
+}
+
+body.j13-body {
+  background:
+    radial-gradient(ellipse 70% 45% at 50% -10%, rgba(24, 160, 88, 0.07), transparent 70%),
+    var(--j13-bg-page);
+  font-size: 14px;
+}
+html[data-theme="dark"] body.j13-body {
+  background:
+    radial-gradient(ellipse 70% 45% at 50% -10%, rgba(35, 195, 107, 0.08), transparent 70%),
+    var(--j13-bg-page);
+}
+@media (prefers-color-scheme: dark) {
+  html:not([data-theme="light"]) body.j13-body {
+    background:
+      radial-gradient(ellipse 70% 45% at 50% -10%, rgba(35, 195, 107, 0.08), transparent 70%),
+      var(--j13-bg-page);
+  }
+}
+
+.j13-header.app-header {
+  height: var(--j13-header-h);
+  box-shadow: none;
+}
+.j13-header__inner.header-inner {
+  max-width: var(--j13-max-w);
+  height: 100%;
+  min-height: var(--j13-header-h);
+  padding: 0 20px;
+  display: flex;
+  grid-template-columns: none;
+  gap: 20px;
+}
+.header-brand { gap: 10px; }
+.header-logo-mark,
+.j13-brand__mark.header-logo-mark {
+  width: 34px;
+  height: 34px;
+  border-radius: 10px;
+  background: linear-gradient(135deg, var(--j13-green) 0%, #34c471 100%);
+  color: #fff;
+  font-size: 17px;
+}
+.header-logo-text {
+  font-size: 15px;
+  font-weight: 600;
+  color: var(--j13-text);
+  letter-spacing: 0.02em;
+}
+.header-brand:hover .header-logo-text { color: var(--j13-green); }
+.j13-brand__text { display: none; }
+
+.header-search-wrap {
+  flex: 1;
+  min-width: 0;
+  max-width: 420px;
+  margin: 0;
+  display: flex;
+  align-items: center;
+  min-height: 36px;
+  padding: 0 10px 0 12px;
+  border: 1px solid var(--j13-border);
+  border-radius: 999px;
+  background: var(--j13-bg-block-muted);
+  transition: border-color var(--j13-ease), box-shadow var(--j13-ease), background var(--j13-ease);
+}
+.header-search-wrap:focus-within {
+  background: var(--j13-surface);
+  border-color: color-mix(in srgb, var(--j13-green) 30%, transparent);
+  box-shadow: 0 0 0 3px var(--j13-green-bg);
+}
+.header-search-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  width: 100%;
+}
+.header-search-icon { color: var(--j13-muted); flex-shrink: 0; }
+.header-search-input {
+  flex: 1;
+  min-width: 0;
+  border: 0;
+  outline: none;
+  background: transparent;
+  font: inherit;
+  font-size: 14px;
+  color: var(--j13-text);
+  padding: 0;
+  max-width: none;
+  margin: 0;
+  border-radius: 0;
+}
+.header-search-filter-btn {
+  flex-shrink: 0;
+  width: 28px;
+  height: 28px;
+  border: 0;
+  border-radius: 999px;
+  background: transparent;
+  color: var(--j13-muted);
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+.header-search-filter-btn:hover,
+.header-search-filter-btn--active {
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+}
+.header-search-kbd {
+  display: none;
+  padding: 2px 6px;
+  border-radius: 4px;
+  border: 1px solid var(--j13-border-light);
+  background: var(--j13-surface);
+  font-size: 10px;
+  color: var(--j13-muted);
+  font-family: inherit;
+}
+@media (min-width: 1100px) {
+  .header-search-kbd { display: inline-flex; }
+}
+
+.header-actions {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-left: auto;
+  flex-shrink: 0;
+}
+.header-compose-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  height: 34px;
+  padding: 0 16px;
+  border: none;
+  border-radius: 999px;
+  background: var(--j13-green);
+  color: #fff;
+  font: inherit;
+  font-size: 13px;
+  font-weight: 600;
+  text-decoration: none;
+  box-shadow: 0 2px 8px rgba(26, 127, 75, 0.22);
+  transition: background var(--j13-ease), box-shadow var(--j13-ease), transform var(--j13-ease);
+}
+.header-compose-btn:hover {
+  background: var(--j13-green-hover);
+  color: #fff;
+  text-decoration: none;
+  box-shadow: 0 3px 10px rgba(26, 127, 75, 0.3);
+}
+.header-action-group {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 3px;
+  border-radius: 999px;
+  background: var(--j13-bg-block-muted);
+  border: 1px solid var(--j13-border-light);
+}
+.header-icon-btn {
+  position: relative;
+  width: 32px;
+  height: 32px;
+  border: none;
+  border-radius: 50%;
+  background: transparent;
+  color: var(--j13-muted);
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  text-decoration: none;
+  padding: 0;
+}
+.header-icon-btn:hover {
+  background: var(--j13-hover);
+  color: var(--j13-text);
+}
+.header-icon-btn .j13-badge {
+  position: absolute;
+  top: -2px;
+  right: -2px;
+  font-size: 10px;
+  min-width: 1rem;
+  padding: 0 4px;
+}
+.header-user-btn {
+  width: 32px;
+  height: 32px;
+  border: none;
+  border-radius: 50%;
+  padding: 0;
+  cursor: pointer;
+  overflow: hidden;
+  background: var(--j13-green);
+  list-style: none;
+  display: grid;
+  place-items: center;
+}
+.header-user-btn::-webkit-details-marker { display: none; }
+.header-user-avatar { width: 100%; height: 100%; object-fit: cover; }
+.header-user-initial { color: #fff; font-size: 14px; font-weight: 600; }
+.header-login-btn {
+  height: 32px;
+  padding: 0 14px;
+  border-radius: 999px;
+  color: var(--j13-green);
+  font-size: 13px;
+  font-weight: 500;
+  text-decoration: none;
+  display: inline-flex;
+  align-items: center;
+}
+.header-login-btn:hover { background: var(--j13-green-bg); }
+.header-user-menu > summary { list-style: none; }
+.j13-theme-toggle.header-icon-btn {
+  border: 0;
+  border-radius: 50%;
+  padding: 0;
+  width: 32px;
+  height: 32px;
+}
+
+.j13-layout {
+  max-width: var(--j13-max-w);
+  grid-template-columns: var(--j13-sidebar-w) minmax(0, 1fr) var(--j13-aside-w);
+  gap: 0;
+  padding: 0;
+  background: var(--j13-surface);
+  border-left: 1px solid var(--j13-border-light);
+  border-right: 1px solid var(--j13-border-light);
+  min-height: calc(100vh - var(--j13-header-h) - 4rem);
+}
+.j13-aside--left.sidebar {
+  width: var(--j13-sidebar-w);
+  border-right: 1px solid var(--j13-border-light);
+  padding: 12px 0;
+  position: sticky;
+  top: var(--j13-header-h);
+  max-height: calc(100vh - var(--j13-header-h));
+  overflow-y: auto;
+}
+.j13-aside--right {
+  width: var(--j13-aside-w);
+  border-left: 1px solid var(--j13-border-light);
+  padding: 12px;
+  gap: 10px;
+}
+.j13-main {
+  border: 0;
+  border-radius: 0;
+  padding: 0;
+  background: var(--j13-surface);
+}
+.sidebar-section {
+  margin: 0;
+  padding: 4px 12px 8px;
+  font-size: 11px;
+  font-weight: 600;
+  color: var(--j13-muted);
+  text-transform: none;
+  letter-spacing: 0;
+}
+.sidebar-section--boards { margin-top: 8px; }
+.sidebar-nav {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  padding: 0 8px;
+}
+.sidebar-nav-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  height: 36px;
+  padding: 0 12px;
+  border-radius: 8px;
+  color: var(--j13-text);
+  text-decoration: none;
+  font-size: 13px;
+  border-left: 0;
+}
+.sidebar-nav-item:hover { background: var(--j13-bg-block-muted); color: var(--j13-text); }
+.sidebar-nav-item.active {
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+  font-weight: 600;
+}
+.sidebar-nav-item__meta {
+  margin-left: auto;
+  color: var(--j13-muted);
+  font-size: 11px;
+  font-variant-numeric: tabular-nums;
+}
+.sidebar-board-icon { font-size: 10px; opacity: 0.88; }
+.sidebar-board-icon--0 { color: var(--board-0-color); }
+.sidebar-board-icon--1 { color: var(--board-1-color); }
+.sidebar-board-icon--2 { color: var(--board-2-color); }
+.sidebar-board-icon--3 { color: var(--board-3-color); }
+.sidebar-board-icon--4 { color: var(--board-4-color); }
+.sidebar-board-icon--5 { color: var(--board-5-color); }
+.sidebar-board-icon--6 { color: var(--board-6-color); }
+.sidebar-board-icon--7 { color: var(--board-7-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-0 { background: var(--board-0-bg); color: var(--board-0-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-1 { background: var(--board-1-bg); color: var(--board-1-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-2 { background: var(--board-2-bg); color: var(--board-2-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-3 { background: var(--board-3-bg); color: var(--board-3-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-4 { background: var(--board-4-bg); color: var(--board-4-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-5 { background: var(--board-5-bg); color: var(--board-5-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-6 { background: var(--board-6-bg); color: var(--board-6-color); }
+.sidebar-nav-item--board.active.sidebar-nav-item--board-7 { background: var(--board-7-bg); color: var(--board-7-color); }
+
+.j13-aside__section, .j13-aside__link { display: none; }
+
+.feed-toolbar {
+  display: flex;
+  align-items: center;
+  padding: 10px 16px;
+  border-bottom: 1px solid var(--j13-border-light);
+  margin: 0;
+}
+.feed-sort-bar {
+  display: flex;
+  gap: 2px;
+  border: 0;
+  padding: 0;
+  background: transparent;
+  border-radius: 0;
+}
+.feed-sort-tab {
+  display: inline-flex;
+  align-items: center;
+  height: 28px;
+  padding: 0 10px;
+  border-radius: 6px;
+  color: var(--j13-muted);
+  text-decoration: none;
+  font-size: 13px;
+  background: transparent;
+}
+.feed-sort-tab:hover { background: var(--j13-bg-block-muted); color: var(--j13-text); }
+.feed-sort-tab.active,
+.feed-sort-tab.is-active {
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+  font-weight: 600;
+}
+
+.j13-search-advanced {
+  margin: 0;
+  padding: 0 16px 10px;
+  border-bottom: 1px solid var(--j13-border-light);
+}
+.post-list { list-style: none; margin: 0; padding: 0; }
+.post-row {
+  display: flex;
+  align-items: flex-start;
+  gap: 12px;
+  width: 100%;
+  padding: 16px 20px;
+  border-bottom: 1px solid var(--j13-border-light);
+  border-radius: 0;
+  margin: 0;
+  border-top: 0;
+  background: transparent;
+  transition: background var(--j13-ease);
+}
+.post-row:hover { background: var(--j13-bg-block-accent); }
+.post-row--v2 { padding: 8px 16px; gap: 8px; }
+.post-row--v2.post-row--title-only { padding: 12px 16px; }
+.post-avatar {
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  overflow: hidden;
+  flex-shrink: 0;
+  background: var(--j13-green-bg);
+  color: var(--j13-green);
+  display: grid;
+  place-items: center;
+  font-weight: 600;
+  font-size: 14px;
+}
+.post-avatar img { width: 100%; height: 100%; object-fit: cover; }
+.post-main {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+.post-main--with-thumb {
+  flex-direction: row;
+  align-items: stretch;
+  gap: 10px;
+}
+.post-content { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 2px; }
+.post-title-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
+.post-title {
+  color: var(--j13-text);
+  text-decoration: none;
+  font-weight: 600;
+  font-size: 15px;
+  line-height: 1.4;
+  letter-spacing: 0;
+}
+.post-row:hover .post-title { color: var(--j13-green); }
+.post-excerpt {
+  margin: 0;
+  font-size: 13px;
+  line-height: 1.45;
+  color: var(--j13-muted);
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+}
+.post-meta--inline { display: flex; margin-top: 2px; }
+.post-meta-left {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 4px 6px;
+  font-size: 12px;
+  color: var(--j13-muted);
+  min-width: 0;
+}
+.post-meta-author { color: var(--j13-muted); text-decoration: none; font-weight: 500; }
+.post-meta-author:hover { color: var(--j13-green); }
+.post-meta-sep { opacity: 0.6; }
+.post-meta-last-reply { display: inline-flex; gap: 4px; align-items: center; }
+.post-list-board-badge {
+  display: inline-flex;
+  align-items: center;
+  height: 20px;
+  padding: 0 6px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 600;
+  text-decoration: none;
+  background: var(--board-0-bg);
+  color: var(--board-0-color);
+}
+.board-badge--1 { background: var(--board-1-bg); color: var(--board-1-color); }
+.board-badge--2 { background: var(--board-2-bg); color: var(--board-2-color); }
+.board-badge--3 { background: var(--board-3-bg); color: var(--board-3-color); }
+.board-badge--4 { background: var(--board-4-bg); color: var(--board-4-color); }
+.board-badge--5 { background: var(--board-5-bg); color: var(--board-5-color); }
+.board-badge--6 { background: var(--board-6-bg); color: var(--board-6-color); }
+.board-badge--7 { background: var(--board-7-bg); color: var(--board-7-color); }
+.post-pin-badge,
+.post-feature-badge {
+  display: inline-flex;
+  align-items: center;
+  height: 20px;
+  padding: 0 6px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 600;
+  background: #fef3c7;
+  color: #92400e;
+}
+.post-feature-badge { background: var(--j13-green-bg); color: var(--j13-green); }
+.post-pin-badge--board { background: #e0f2fe; color: #075985; }
+.post-aside { display: flex; align-items: flex-end; gap: 10px; flex-shrink: 0; }
+.post-thumb {
+  width: 64px;
+  height: 48px;
+  border-radius: 4px;
+  overflow: hidden;
+  background: var(--j13-bg-block-muted);
+  display: block;
+}
+.post-thumb img { width: 100%; height: 100%; object-fit: cover; }
+.post-stats {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  color: var(--j13-muted);
+  font-variant-numeric: tabular-nums;
+}
+.post-stat { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
+
+.j13-post-item { display: none; } /* 旧列表类停用 */
+
+.j13-widget,
+.j13-checkin {
+  border: 1px solid var(--j13-border-light);
+  border-radius: 10px;
+  background: var(--j13-surface);
+  padding: 12px;
+  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
+}
+.j13-widget__title {
+  text-transform: none;
+  letter-spacing: 0;
+  font-size: 13px;
+  color: var(--j13-text);
+  font-weight: 600;
+}
+.j13-btn, .j13-btn--compose, .header-compose-btn {
+  background: var(--j13-green);
+  border-color: var(--j13-green);
+}
+.j13-btn:hover { background: var(--j13-green-hover); border-color: var(--j13-green-hover); }
+a { color: var(--j13-green); }
+
+@media (max-width: 900px) {
+  .j13-layout { grid-template-columns: var(--j13-sidebar-w) minmax(0, 1fr); }
+  .j13-aside--right { display: none; }
+  .j13-header__inner.header-inner { display: flex; flex-wrap: wrap; }
+  .header-search-wrap { order: 3; flex: 1 1 100%; max-width: none; }
+}
diff --git a/web_src/js/site.js b/web_src/js/site.js
index c95e977..1da4677 100644
--- a/web_src/js/site.js
+++ b/web_src/js/site.js
@@ -60,6 +60,33 @@ document.documentElement.dataset.j13Ssr = "1";
   }
 })();
 
+(function headerSearchUX() {
+  var input = document.getElementById("j13-header-search-input");
+  var filterBtn = document.getElementById("j13-search-filter-btn");
+  var advanced = document.getElementById("search");
+  if (filterBtn && advanced) {
+    filterBtn.addEventListener("click", function () {
+      advanced.open = true;
+      filterBtn.classList.add("header-search-filter-btn--active");
+      var kw = advanced.querySelector('input[name="keyword"]');
+      if (kw) kw.focus();
+      advanced.scrollIntoView({ behavior: "smooth", block: "nearest" });
+    });
+  }
+  document.addEventListener("keydown", function (e) {
+    if (!(e.ctrlKey || e.metaKey) || (e.key !== "k" && e.key !== "K")) return;
+    var tag = (e.target && e.target.tagName) || "";
+    if (tag === "INPUT" || tag === "TEXTAREA" || (e.target && e.target.isContentEditable)) {
+      if (e.target === input) return;
+    }
+    e.preventDefault();
+    if (input) {
+      input.focus();
+      input.select();
+    }
+  });
+})();
+
 (function mdEditors() {
   function insertAtCursor(textarea, text) {
     const start = textarea.selectionStart || 0;