diff --git a/AGENTS.md b/AGENTS.md
index 1029d47..90b80a7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -31,7 +31,7 @@ B 未過關前，不大寫業務後端。
 
 - 新殼在 `apps/web`；不引入 MUI/Ant/Chakra。  
 - 不複製任天堂 / Nook UI；不用 emoji 當主 icon。  
-- 字體：Inter + Taipei Sans TC。  
+- 字體：Inter + Noto Sans TC（中文單一家族，可變字重 400–700）。  
 - mock | live 同一 repository 介面。  
 - 詳見 `docs/product/haixun-console/spec.md`。
 
diff --git a/apps/web/index.html b/apps/web/index.html
index 848327f..09db9ca 100644
--- a/apps/web/index.html
+++ b/apps/web/index.html
@@ -27,11 +27,11 @@
         } catch (e) {}
       })();
     </script>
-    <!-- Inter (Latin); 中文由 Taipei Sans TC（npm）承接 -->
+    <!-- Inter（拉丁）+ Noto Sans TC（中文，可變 400–700：含 500／600／650） -->
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link
-      href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap"
+      href="https://fonts.googleapis.com/css2?family=Inter:wght@400..700&family=Noto+Sans+TC:wght@400..700&display=swap"
       rel="stylesheet"
     />
   </head>
diff --git a/apps/web/package-lock.json b/apps/web/package-lock.json
index 7c857e9..8f3f77f 100644
--- a/apps/web/package-lock.json
+++ b/apps/web/package-lock.json
@@ -10,8 +10,7 @@
       "dependencies": {
         "react": "^19.2.7",
         "react-dom": "^19.2.7",
-        "react-router-dom": "^7.18.1",
-        "taipei-sans-tc": "^0.1.1"
+        "react-router-dom": "^7.18.1"
       },
       "devDependencies": {
         "@testing-library/jest-dom": "^6.9.1",
@@ -3120,12 +3119,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/taipei-sans-tc": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/taipei-sans-tc/-/taipei-sans-tc-0.1.1.tgz",
-      "integrity": "sha512-GCvdO+SATITfm128bT+fFmbpVW8+o0zLMVlNskSOk3CBghNzfqj4tvwTbIQ9vmvftd31s5UNypLA3aIw/IG6RQ==",
-      "license": "MIT"
-    },
     "node_modules/tinybench": {
       "version": "2.9.0",
       "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
diff --git a/apps/web/package.json b/apps/web/package.json
index 8d8b72b..2c35ed0 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -15,15 +15,14 @@
   "dependencies": {
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
-    "react-router-dom": "^7.18.1",
-    "taipei-sans-tc": "^0.1.1"
+    "react-router-dom": "^7.18.1"
   },
   "devDependencies": {
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
     "@types/node": "^24.13.2",
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
-    "@testing-library/jest-dom": "^6.9.1",
-    "@testing-library/react": "^16.3.2",
     "@vitejs/plugin-react": "^6.0.3",
     "jsdom": "^26.1.0",
     "oxlint": "^1.71.0",
diff --git a/apps/web/src/components/layout/SidebarNav.tsx b/apps/web/src/components/layout/SidebarNav.tsx
index fd59263..f2d6580 100644
--- a/apps/web/src/components/layout/SidebarNav.tsx
+++ b/apps/web/src/components/layout/SidebarNav.tsx
@@ -14,7 +14,7 @@ export function SidebarNav() {
 
   return (
     <aside className="hb-sidebar" aria-label={t("nav.navigate")}>
-      <p className="hb-sidebar__label display-en">{t("nav.navigate")}</p>
+      <p className="hb-sidebar__label">{t("nav.navigate")}</p>
       {groups.map(({ group, items }) => (
         <div className="hb-nav__group" key={group.key}>
           <p className="hb-nav__group-label">{t(group.labelKey)}</p>
diff --git a/apps/web/src/components/layout/Topbar.tsx b/apps/web/src/components/layout/Topbar.tsx
index 8bfc665..f08c3ac 100644
--- a/apps/web/src/components/layout/Topbar.tsx
+++ b/apps/web/src/components/layout/Topbar.tsx
@@ -17,7 +17,7 @@ export function Topbar() {
           {locale === "zh-TW" ? (
             <span className="hb-topbar__en display-en">{t("app.nameEn")}</span>
           ) : (
-            <span className="hb-topbar__en display-en">{t("app.nameZh")}</span>
+            <span className="hb-topbar__en">{t("app.nameZh")}</span>
           )}
         </span>
       </Link>
diff --git a/apps/web/src/styles/global.css b/apps/web/src/styles/global.css
index 366dbf4..244027f 100644
--- a/apps/web/src/styles/global.css
+++ b/apps/web/src/styles/global.css
@@ -2,9 +2,7 @@
 @import "./ui.css";
 @import "./layout.css";
 
-/* Taipei Sans TC: Regular + Bold only (avoid thin weights at small sizes). */
-@import "taipei-sans-tc/dist/Regular/TaipeiSansTCBeta-Regular.css";
-@import "taipei-sans-tc/dist/Bold/TaipeiSansTCBeta-Bold.css";
+/* 中文：Noto Sans TC 由 index.html 以可變字重 400–700 載入。 */
 
 *,
 *::before,
@@ -33,6 +31,7 @@ body {
   font-size: var(--hb-text-base);
   line-height: 1.58;
   letter-spacing: -0.011em;
+  font-synthesis: none;
   color: var(--hb-ink);
   /* 星圖網格 + 潮汐法光，低對比避免干擾資訊。 */
   background:
@@ -126,7 +125,7 @@ svg {
   }
 }
 
-/* English decorative labels */
+/* English decorative labels — same Inter + Noto Sans TC stack as body */
 .display-en {
   font-family: var(--hb-font-en);
   letter-spacing: 0.02em;
diff --git a/apps/web/src/styles/tokens.css b/apps/web/src/styles/tokens.css
index 4583710..5c2865b 100644
--- a/apps/web/src/styles/tokens.css
+++ b/apps/web/src/styles/tokens.css
@@ -1,7 +1,7 @@
 /**
  * 巡樓 · Lapras — Harbor Desk UI
  * 色：pale blue 主色 / cream 次色 / burnt orange 點綴（Pokémon Palette）
- * 字體：Inter + Taipei Sans TC
+ * 字體：Inter（拉丁）+ Noto Sans TC（中文，可變字重 400–700）
  *
  * 唯一真相：顏色、字級、間距只在這個檔案定義。其他 css 與 tsx 一律吃 var()，
  * 不寫死色碼與 font-size —— 否則深淺模式會有一半的畫面不跟著切。
@@ -87,9 +87,9 @@
   --hb-shadow-float: 0 16px 48px rgb(21 38 40 / 0.12);
   --hb-shadow-glow: 0 0 24px rgb(139 197 205 / 0.4);
 
-  --hb-font-sans: "Inter", "Taipei Sans TC", system-ui, -apple-system, "Segoe UI",
-    "Noto Sans TC", sans-serif;
-  --hb-font-en: "Inter", system-ui, -apple-system, sans-serif;
+  /* Latin → Inter；中文只走 Noto Sans TC（400–700，含 500／600／650）。 */
+  --hb-font-sans: "Inter", "Noto Sans TC", system-ui, -apple-system, "Segoe UI", sans-serif;
+  --hb-font-en: var(--hb-font-sans);
   --hb-font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
 
   /* 字階只有這 7 級，之間沒有中間值 —— 0.8 / 0.82 / 0.85 併存看不出差別，
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..5174456
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,6 @@
+{
+  "name": "thread-master",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {}
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/package.json
@@ -0,0 +1 @@
+{}