diff --git a/src/components/Header.astro b/src/components/Header.astro
index ab6b5cb..0257481 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -122,4 +122,20 @@ const switchLabel = curLocale === 'zh' ? 'EN' : '中';
   @media (max-width: 560px) {
     .nav-link { font-size: 14px; padding-inline: var(--space-1); }
   }
+  /* 移动端审计 B1：7 项一行在 390px 溢出 50-88px（主题钮被推出屏）——
+     更窄一档整体收紧，估算总宽 ~344px < 360 */
+  @media (max-width: 430px) {
+    .brand { font-size: 16px; }
+    .nav-link { font-size: 12.5px; padding-inline: 3px; }
+    nav ul { gap: 2px; }
+    .header-inner { gap: 6px; padding-inline: 10px; }
+    /* 图标钮在此密度下 32px（WCAG 24px 下限之上，44 标准的密度妥协） */
+    .header-inner .tap { min-width: 32px; min-height: 32px; }
+    .nav-lang { font-size: 12px; padding-inline: 2px; }
+  }
+  @media (max-width: 370px) {
+    /* en "Open Source" 长词最后 4px：再收字距 */
+    .nav-link { font-size: 12px; padding-inline: 2px; }
+    .brand { letter-spacing: 0; }
+  }
 </style>
diff --git a/src/components/PostList.astro b/src/components/PostList.astro
index f3e548d..e6ba575 100644
--- a/src/components/PostList.astro
+++ b/src/components/PostList.astro
@@ -84,7 +84,7 @@ const mmdd = (d: Date) =>
     color: var(--ink-2);
     font-variant-numeric: tabular-nums;
   }
-  .shelf-link { float: right; font-size: 12.5px; color: var(--accent); font-weight: 400; }
+  .shelf-link { float: right; font-size: 12.5px; padding-block: 4px; color: var(--accent); font-weight: 400; }
   .track {
     display: flex;
     align-items: center;
@@ -123,6 +123,10 @@ const mmdd = (d: Date) =>
     flex: none;
   }
   .row-title {
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden;
     flex: 1;
     min-width: 0;
     font-size: 16px;
@@ -132,7 +136,11 @@ const mmdd = (d: Date) =>
     white-space: nowrap;
     transition: color var(--dur) var(--ease);
   }
-  .row:hover .row-title { color: var(--accent); }
+  .row:hover .row-title {
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden; color: var(--accent); }
   .tag {
     flex: none;
     font-family: var(--font-mono);
diff --git a/src/components/geek/ProjectWall.astro b/src/components/geek/ProjectWall.astro
index cca8fcb..460a3fc 100644
--- a/src/components/geek/ProjectWall.astro
+++ b/src/components/geek/ProjectWall.astro
@@ -3,11 +3,16 @@
 // 双源数据见 src/lib/projects.ts；语言色点用 linguist 常用色映射
 import { loadProjects, type RepoCard } from '../../lib/projects';
 
+import { t } from '../../i18n/ui';
+import type { Locale } from '../../lib/locale';
+
 interface Props {
   /** 展示上限：首页精选 6；/opensource 全量传大数 */
   limit?: number;
+  locale?: Locale;
 }
-const { limit = 6 } = Astro.props;
+const { limit = 6, locale = 'zh' } = Astro.props;
+const title = t('open_source_projects', locale);
 const LANG_COLORS: Record<string, string> = {
   Astro: '#ff5a03', TypeScript: '#3178c6', JavaScript: '#f1e05a',
   Python: '#3572a5', Go: '#00add8', Rust: '#dea584', Shell: '#89e051',
@@ -23,7 +28,7 @@ try {
 ---
 
 <section class="project-wall" aria-label="开源项目">
-  <h2 class="wall-title">开源 · Projects</h2>
+  <h2 class="wall-title">{title}</h2>
   <ul>
     {projects.map((p) => (
       <li>
diff --git a/src/pages/en/index.astro b/src/pages/en/index.astro
index 02c8b8f..5822c77 100644
--- a/src/pages/en/index.astro
+++ b/src/pages/en/index.astro
@@ -99,7 +99,7 @@ const photos = (await getCollection('photos')).slice(0, 4);
       note: t('heatmap_note', 'en'),
     }}
   />
-  <ProjectWall />
+  <ProjectWall locale="en" />
 </BaseLayout>
 
 <style>
diff --git a/src/pages/en/opensource.astro b/src/pages/en/opensource.astro
index 0d8685f..e94a40e 100644
--- a/src/pages/en/opensource.astro
+++ b/src/pages/en/opensource.astro
@@ -11,7 +11,7 @@ import { t } from '../../i18n/ui';
     title: t('heatmap_title', 'en'), summary: t('heatmap_summary', 'en'),
     less: t('heatmap_less', 'en'), more: t('heatmap_more', 'en'), note: t('heatmap_note', 'en'),
   }} />
-  <ProjectWall limit={99} />
+  <ProjectWall limit={99} locale="en" />
 </BaseLayout>
 
 <style>
diff --git a/src/styles/global.css b/src/styles/global.css
index fb0cc1d..129a9c3 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -71,6 +71,7 @@ a { color: inherit; text-decoration: none; }
   line-height: var(--leading-tech);
   color: var(--ink-2);
   max-width: var(--measure);
+  overflow-wrap: break-word; /* 移动端审计 M1：裸长 URL 曾撑破 88px（只给了书评轨） */
 }
 .prose-tech p + p { margin-top: 0.9em; }
 .prose-tech h2 { font-size: var(--text-h2); margin-top: 1.8em; line-height: var(--leading-heading); text-wrap: balance; }