diff --git a/package.json b/package.json
index 52f7735..e3c630e 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "styled-components": "^6.1.12",
     "swiper": "^11.1.9",
     "vite": "^5.4.1",
-    "zustand": "^4.5.5"
+    "zustand": "^5.0.0-rc.2"
   },
   "devDependencies": {
     "@svgr/webpack": "^8.1.0",
diff --git a/public/fonts/SpoqaHanSansNeo-Bold.woff2 b/public/fonts/SpoqaHanSansNeo-Bold.woff2
new file mode 100644
index 0000000..da1dd60
Binary files /dev/null and b/public/fonts/SpoqaHanSansNeo-Bold.woff2 differ
diff --git a/public/fonts/SpoqaHanSansNeo-Medium.woff2 b/public/fonts/SpoqaHanSansNeo-Medium.woff2
new file mode 100644
index 0000000..0e9b8d7
Binary files /dev/null and b/public/fonts/SpoqaHanSansNeo-Medium.woff2 differ
diff --git a/public/fonts/SpoqaHanSansNeo-Regular.woff2 b/public/fonts/SpoqaHanSansNeo-Regular.woff2
new file mode 100644
index 0000000..1572319
Binary files /dev/null and b/public/fonts/SpoqaHanSansNeo-Regular.woff2 differ
diff --git a/src/app/(layouts)/header.tsx b/src/app/(layouts)/header.tsx
index f2244d6..542672e 100644
--- a/src/app/(layouts)/header.tsx
+++ b/src/app/(layouts)/header.tsx
@@ -85,11 +85,11 @@ export default function Header() {
         if (accessToken && tokenExpiration) {
           sessionStorage.setItem("AccessToken", accessToken);
           sessionStorage.setItem("TokenExpiration", tokenExpiration.toString());
-  
+
           setAccessToken(accessToken);
-          setLogin(true); 
+          setLogin(true);
         } else {
-          logout(); 
+          logout();
         }
       } catch (error) {
         console.error("Failed to refresh access token:", error);
@@ -104,7 +104,7 @@ export default function Header() {
   }, [path]);
 
   useEffect(() => {
-    checkAndRefreshToken(); 
+    checkAndRefreshToken();
   }, []);
 
   return (
@@ -133,7 +133,11 @@ export default function Header() {
           <div className={styles.menuTopContainer}>
             <img src={logo_white.src} alt="Logo" />
             <div className={styles.feedbackBtnContainer}>
-              <Button className={styles.feedbackBtn} size="small" onClick={navFeedback}>
+              <Button
+                className={styles.feedbackBtn}
+                size="small"
+                onClick={navFeedback}
+              >
                 피드백
               </Button>
             </div>
@@ -201,6 +205,7 @@ export default function Header() {
         title="뒤로가기"
         open={isModalOpen}
         onCancel={handleCancel}
+        width={450}
         centered
         footer={[
           <Button key="cancel" onClick={handleCancel}>
diff --git a/src/app/(pages)/(landing)/page.module.css b/src/app/(pages)/(landing)/page.module.css
index 533758e..aadf610 100644
--- a/src/app/(pages)/(landing)/page.module.css
+++ b/src/app/(pages)/(landing)/page.module.css
@@ -3,5 +3,4 @@
   display: flex;
   flex-direction: column;
   align-items: center;
-  transition: background-color 1s ease;
 }
diff --git a/src/app/(pages)/4q-create/page.tsx b/src/app/(pages)/4q-create/page.tsx
index 5d53e86..9382799 100644
--- a/src/app/(pages)/4q-create/page.tsx
+++ b/src/app/(pages)/4q-create/page.tsx
@@ -118,7 +118,7 @@ export default function Page() {
       <Modal
         open={isModalOpen}
         onCancel={handleCancel}
-        width={400}
+        width={450}
         centered
         footer={
           <div style={{ textAlign: "center" }}>
diff --git a/src/app/layout.module.css b/src/app/layout.module.css
index 4cc9503..0624ab3 100644
--- a/src/app/layout.module.css
+++ b/src/app/layout.module.css
@@ -1,7 +1,7 @@
-@import url(//spoqa.github.io/spoqa-han-sans/css/SpoqaHanSansNeo.css);
+/* @import url(//spoqa.github.io/spoqa-han-sans/css/SpoqaHanSansNeo.css); */
 
 .container {
-  font-family: "Spoqa Han Sans Neo", sans-serif;
+  /* font-family: "Spoqa Han Sans Neo", sans-serif; */
   font-style: normal;
   max-width: 600px;
   height: 100vh;
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index 091dba9..fa3cf36 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -7,11 +7,33 @@ import { Metadata } from "next";
 import Head from "next/head";
 import Header from "./(layouts)/header";
 import styles from "./layout.module.css";
-import GoogleAnalytics from "../lib/GoogleAnalytics";
+import GoogleAnalytics from "@/lib/GoogleAnalytics";
 import { GoogleTagManager } from "@next/third-parties/google";
-
+import localFont from 'next/font/local'
 import { UserProvider } from "@/context/UserContext";
 
+const spoqaHanSansNeo = localFont({
+  src: [
+    {
+      path: "../../public/fonts/SpoqaHanSansNeo-Bold.woff2",
+      weight: "700",
+      style: "normal",
+    },
+    {
+      path: "../../public/fonts/SpoqaHanSansNeo-Medium.woff2",
+      weight: "500",
+      style: "normal",
+    },
+    {
+      path: "../../public/fonts/SpoqaHanSansNeo-Regular.woff2",
+      weight: "400",
+      style: "normal",
+    },
+  ],
+  variable: "--font-spoqaHanSansNeo",
+});
+
+
 export const metadata: Metadata = {
   robots: { index: true, follow: true },
   metadataBase: new URL("https://qqqq.world"),
@@ -44,7 +66,7 @@ const config: ThemeConfig = {
 
 export default function RootLayout({ children }: { children: ReactNode }) {
   return (
-    <html lang="en">
+    <html lang="ko" className={spoqaHanSansNeo.className}> {/* 폰트 적용 */}
       <Head>
         <meta
           name="viewport"
diff --git a/sentry.client.config.ts b/src/config/sentry.client.config.ts
similarity index 100%
rename from sentry.client.config.ts
rename to src/config/sentry.client.config.ts
diff --git a/sentry.edge.config.ts b/src/config/sentry.edge.config.ts
similarity index 100%
rename from sentry.edge.config.ts
rename to src/config/sentry.edge.config.ts
diff --git a/sentry.server.config.ts b/src/config/sentry.server.config.ts
similarity index 100%
rename from sentry.server.config.ts
rename to src/config/sentry.server.config.ts
diff --git a/yarn.lock b/yarn.lock
index 79af587..ebd00a8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5473,11 +5473,6 @@ use-image@^1.1.0:
   resolved "https://registry.yarnpkg.com/use-image/-/use-image-1.1.1.tgz#bdd3f2e1718393ffc0e56136f993467103d9d2df"
   integrity sha512-n4YO2k8AJG/BcDtxmBx8Aa+47kxY5m335dJiCQA5tTeVU4XdhrhqR6wT0WISRXwdMEOv5CSjqekDZkEMiiWaYQ==
 
-use-sync-external-store@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/use-sync-external-store/-/use-sync-external-store-1.2.2.tgz#c3b6390f3a30eba13200d2302dcdf1e7b57b2ef9"
-  integrity sha512-PElTlVMwpblvbNqQ82d2n6RjStvdSoNe9FG28kNfz3WiXilJm4DdNkEzRhCZuIDwY8U08WVihhGR5iRqAwfDiw==
-
 util-deprecate@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
@@ -5623,9 +5618,7 @@ yocto-queue@^0.1.0:
   resolved "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"
   integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==
 
-zustand@^4.5.5:
-  version "4.5.5"
-  resolved "https://registry.yarnpkg.com/zustand/-/zustand-4.5.5.tgz#f8c713041543715ec81a2adda0610e1dc82d4ad1"
-  integrity sha512-+0PALYNJNgK6hldkgDq2vLrw5f6g/jCInz52n9RTpropGgeAf/ioFUCdtsjCqu4gNhW9D01rUQBROoRjdzyn2Q==
-  dependencies:
-    use-sync-external-store "1.2.2"
+zustand@^5.0.0-rc.2:
+  version "5.0.0-rc.2"
+  resolved "https://registry.yarnpkg.com/zustand/-/zustand-5.0.0-rc.2.tgz#d28d95ffb6f0b20cadbaea39210f18446a5bf989"
+  integrity sha512-o2Nwuvnk8vQBX7CcHL8WfFkZNJdxB/VKeWw0tNglw8p4cypsZ3tRT7rTRTDNeUPFS0qaMBRSKe+fVwL5xpcE3A==