diff --git a/public/logo-v4.png b/public/logo-v4.png
new file mode 100644
index 0000000..8f0453b
Binary files /dev/null and b/public/logo-v4.png differ
diff --git a/src/app/artist/[id]/page.tsx b/src/app/artist/[id]/page.tsx
index 1d9939a..edae975 100644
--- a/src/app/artist/[id]/page.tsx
+++ b/src/app/artist/[id]/page.tsx
@@ -16,10 +16,10 @@ export async function generateMetadata({
 }: ArtistPageProps): Promise<Metadata> {
   const { id } = await params;
   const artist = getArtist(id);
-  if (!artist) return { title: "艺人不存在 · CYBER STAR" };
+  if (!artist) return { title: "艺人不存在 · 银河初星计划 C . S . G" };
 
   return {
-    title: `${artist.name} · ${artist.enName} · CYBER STAR`,
+    title: `${artist.name} · ${artist.enName} · 银河初星计划 C . S . G`,
     description: artist.bio.slice(0, 120),
   };
 }
diff --git a/src/app/favicon.ico b/src/app/favicon.ico
index 718d6fe..c38e65a 100644
Binary files a/src/app/favicon.ico and b/src/app/favicon.ico differ
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index f725429..f39646c 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -33,15 +33,27 @@ const inter = Inter({
 });
 
 export const metadata: Metadata = {
-  title: "CYBER ✦ STAR · 虚拟偶像 Top12 出道企划",
+  title: "银河初星计划 C . S . G",
   description:
-    "36 位虚拟偶像候选人，由你投票决出最终出道 Top12。Cyber Star · Virtual Idol Debut Project.",
-  keywords: ["虚拟偶像", "出道", "投票", "Top12", "Cyber Star", "Virtual Idol"],
+    "36 位虚拟偶像候选人，由你投票决出最终出道 Top12。银河初星计划 C . S . G。",
+  keywords: [
+    "银河初星计划",
+    "C . S . G",
+    "虚拟偶像",
+    "出道",
+    "投票",
+    "Top12",
+    "Virtual Idol",
+  ],
   openGraph: {
-    title: "CYBER ✦ STAR",
+    title: "银河初星计划 C . S . G",
     description: "虚拟偶像 Top12 出道企划",
     type: "website",
   },
+  icons: {
+    icon: "/favicon.ico?v=4",
+    shortcut: "/favicon.ico?v=4",
+  },
 };
 
 export default function RootLayout({
diff --git a/src/app/login/LoginForm.tsx b/src/app/login/LoginForm.tsx
index 1a69a99..e27c37f 100644
--- a/src/app/login/LoginForm.tsx
+++ b/src/app/login/LoginForm.tsx
@@ -93,8 +93,8 @@ export default function LoginForm() {
         {/* Logo */}
         <div className="flex flex-col items-center mb-8">
           <img
-            src="/logo-v3.png"
-            alt="CYBER STAR"
+            src="/logo-v4.png?v=4"
+            alt="银河初星计划 C . S . G"
             decoding="async"
             draggable={false}
             className="block select-none h-20 sm:h-24 w-auto"
diff --git a/src/app/login/page.tsx b/src/app/login/page.tsx
index 53ec994..03a5abb 100644
--- a/src/app/login/page.tsx
+++ b/src/app/login/page.tsx
@@ -2,7 +2,7 @@ import { Suspense } from "react";
 import LoginForm from "./LoginForm";
 
 export const metadata = {
-  title: "登录 · CYBER STAR",
+  title: "登录 · 银河初星计划 C . S . G",
 };
 
 export default function LoginPage() {
diff --git a/src/app/me/page.tsx b/src/app/me/page.tsx
index de5ed0b..b664a70 100644
--- a/src/app/me/page.tsx
+++ b/src/app/me/page.tsx
@@ -4,7 +4,7 @@ import { auth } from "@/lib/auth";
 import MeContent from "./MeContent";
 
 export const metadata: Metadata = {
-  title: "个人中心 · CYBER STAR",
+  title: "个人中心 · 银河初星计划 C . S . G",
 };
 
 export default async function MePage() {
diff --git a/src/components/Footer.tsx b/src/components/Footer.tsx
index 3abc36d..2fc719e 100644
--- a/src/components/Footer.tsx
+++ b/src/components/Footer.tsx
@@ -4,7 +4,7 @@ export default function Footer() {
     <footer className="border-t border-white/[0.06] bg-deep mt-16">
       <div className="max-w-[1500px] mx-auto px-6 sm:px-8 h-16 flex items-center justify-center text-center">
         <p className="text-[11px] text-white/35 tracking-[0.05em]">
-          © {year} CYBER STAR · All Rights Reserved
+          © {year} 银河初星计划 C . S . G · All Rights Reserved
         </p>
       </div>
     </footer>
diff --git a/src/components/HeroBanner.tsx b/src/components/HeroBanner.tsx
index d2995ba..f73864d 100644
--- a/src/components/HeroBanner.tsx
+++ b/src/components/HeroBanner.tsx
@@ -90,8 +90,8 @@ export default function HeroBanner({
       <div className="absolute inset-0 max-w-[1500px] mx-auto px-4 sm:px-6 lg:px-8">
         {/* Eyebrow 左上 · 紧贴导航下方 */}
         <div className="absolute top-[6.5rem] sm:top-[7.5rem] left-4 sm:left-6 lg:left-8 z-10">
-          <p className="font-label text-[10px] sm:text-xs tracking-[0.4em] uppercase text-purple-200/90">
-            Top 12 · Cyber Star Debut Survival
+          <p className="font-label text-[10px] sm:text-xs tracking-[0.28em] uppercase text-purple-200/90">
+            银河初星计划 C . S . G
           </p>
         </div>
 
diff --git a/src/components/Logo.tsx b/src/components/Logo.tsx
index a65f4fd..6482450 100644
--- a/src/components/Logo.tsx
+++ b/src/components/Logo.tsx
@@ -8,7 +8,7 @@ interface LogoProps {
   className?: string;
 }
 
-// 高度由 size 控制，宽度按 logo.png 实际比例（约 5.41:1，单行 CYBER STAR + 星环）自适应
+// 高度由 size 控制，宽度按 logo-v4.png 实际比例自适应
 const HEIGHT_PX: Record<LogoSize, number> = {
   sm: 24,
   md: 44,
@@ -25,11 +25,11 @@ export default function Logo({
 
   // 用原生 <img> 绕开 Next/Image 的格式转换 —— 某些环境下 sharp 把透明 PNG
   // 转 webp/avif 时会铺白底，导致 logo 在深色 nav 上出现白色矩形。
-  // ?v=2 缓存破坏:logo 改版时 +1,浏览器立刻拉新版而不读老缓存。
+  // ?v=4 缓存破坏:logo 改版时 +1,浏览器立刻拉新版而不读老缓存。
   const inner = (
     <img
-      src="/logo.png?v=3"
-      alt="CYBER STAR"
+      src="/logo-v4.png?v=4"
+      alt="银河初星计划 C . S . G"
       decoding="async"
       draggable={false}
       style={{
@@ -46,7 +46,7 @@ export default function Logo({
     <Link
       href={href}
       className="inline-flex items-center hover:opacity-90 transition-opacity"
-      aria-label="CYBER STAR · 首页"
+      aria-label="银河初星计划 C . S . G · 首页"
       style={{ background: "transparent" }}
     >
       {inner}
diff --git a/src/components/Navigation.tsx b/src/components/Navigation.tsx
index 3446810..b0fa5f2 100644
--- a/src/components/Navigation.tsx
+++ b/src/components/Navigation.tsx
@@ -2,6 +2,7 @@
 
 import { useEffect, useState } from "react";
 import { usePathname } from "next/navigation";
+import Logo from "./Logo";
 import NavLinks from "./NavLinks";
 import SearchTrigger from "./SearchTrigger";
 import AuthMenu from "./auth/AuthMenu";
@@ -27,6 +28,7 @@ export default function Navigation() {
   // nav 关掉自己的玻璃,避免双重 backdrop-filter 在 y=80 处出现拼接线。
   const filterStuck = useUIStore((s) => s.filterStuck);
   const glassOff = isTransparent || filterStuck;
+  const showLogo = pathname !== "/";
 
   // 维护一个站内导航计数器(per-tab),供 FloatingBackButton 判断 router.back() 是否安全
   useEffect(() => {
@@ -81,7 +83,16 @@ export default function Navigation() {
         )}
       />
       <nav className="relative max-w-[1500px] mx-auto h-20 px-4 sm:px-6 lg:px-8 flex items-center gap-4 sm:gap-8">
-        {/* 左侧:首页 / 排行榜 / 我的(logo 已移除,所有屏宽都显示在第一行) */}
+        {showLogo && (
+          <div className="hidden sm:flex shrink-0 items-center">
+            <Logo
+              size="md"
+              className="drop-shadow-[0_0_14px_rgba(139,92,246,0.55)]"
+            />
+          </div>
+        )}
+
+        {/* 左侧:首页 / 排行榜 / 我的 */}
         <NavLinks />
 
         {/* 右侧:搜索 + 今日余票 + 登录/注册 (或 头像+下拉) */}
diff --git a/src/components/auth/LoginModal.tsx b/src/components/auth/LoginModal.tsx
index bde9d9d..39b93aa 100644
--- a/src/components/auth/LoginModal.tsx
+++ b/src/components/auth/LoginModal.tsx
@@ -173,8 +173,8 @@ export default function LoginModal({ open, onClose, onSuccess }: LoginModalProps
 
             <div className="flex flex-col items-center mb-6">
               <img
-                src="/logo-v3.png"
-                alt="CYBER STAR"
+                src="/logo-v4.png?v=4"
+                alt="银河初星计划 C . S . G"
                 decoding="async"
                 draggable={false}
                 className="block select-none h-16 sm:h-20 w-auto"