diff --git a/.env.example b/.env.example
index a60f134..aec9adf 100644
--- a/.env.example
+++ b/.env.example
@@ -4,6 +4,11 @@
 API_PORT=3000
 JWT_SECRET=여기에-32자-이상-랜덤-시크릿-입력
 JWT_EXPIRES=7d
+APP_BASE_URL=https://uniare.sori.studio
+
+# --- 이메일 (Resend) ---
+RESEND_API_KEY=re_여기에_API_KEY_입력
+RESEND_FROM_EMAIL=UNIARE <account@send.example.com>
 
 # --- 웹 (docker-compose.prod.yml) ---
 WEB_PORT=44082
diff --git a/VERSION b/VERSION
index 33fc096..4dc4641 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-v4.0.11
+v4.0.12
diff --git a/api/package.json b/api/package.json
index d9077d5..6124fff 100644
--- a/api/package.json
+++ b/api/package.json
@@ -1,6 +1,6 @@
 {
     "name": "uadeck-api",
-    "version": "4.0.11",
+    "version": "4.0.12",
     "type": "module",
     "main": "src/index.js",
     "scripts": {
diff --git a/api/src/db.js b/api/src/db.js
index 08877bf..8f2a616 100644
--- a/api/src/db.js
+++ b/api/src/db.js
@@ -64,6 +64,20 @@ export function initDb(dbPath) {
         );
 
         CREATE INDEX IF NOT EXISTS idx_deck_favorites_share_code ON deck_favorites(share_code);
+
+        CREATE TABLE IF NOT EXISTS auth_tokens (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id INTEGER NOT NULL,
+            type TEXT NOT NULL,
+            token_hash TEXT NOT NULL UNIQUE,
+            expires_at TEXT NOT NULL,
+            used_at TEXT,
+            created_at TEXT NOT NULL DEFAULT (datetime('now')),
+            FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        );
+
+        CREATE INDEX IF NOT EXISTS idx_auth_tokens_user_type
+        ON auth_tokens(user_id, type);
     `);
 
     const deckCols = db.prepare('PRAGMA table_info(decks)').all();
@@ -81,6 +95,32 @@ export function initDb(dbPath) {
     if (!userCols.some((c) => c.name === 'last_login_at')) {
         db.exec('ALTER TABLE users ADD COLUMN last_login_at TEXT');
     }
+    if (!userCols.some((c) => c.name === 'email_verified_at')) {
+        db.exec('ALTER TABLE users ADD COLUMN email_verified_at TEXT');
+        db.exec(`
+            UPDATE users
+            SET email_verified_at = COALESCE(updated_at, created_at, datetime('now'))
+            WHERE email_verified_at IS NULL
+        `);
+    }
+
+    const usernameCaseConflicts = db.prepare(`
+        SELECT lower(username) AS normalized_username, COUNT(*) AS count
+        FROM users
+        GROUP BY lower(username)
+        HAVING COUNT(*) > 1
+        LIMIT 1
+    `).get();
+    if (!usernameCaseConflicts) {
+        db.exec(`
+            CREATE UNIQUE INDEX IF NOT EXISTS idx_users_username_nocase
+            ON users(username COLLATE NOCASE)
+        `);
+    } else {
+        console.warn(
+            '대소문자만 다른 기존 사용자명이 있어 NOCASE 고유 인덱스를 만들지 못했습니다. 관리자 확인이 필요합니다.',
+        );
+    }
 
     return db;
 }
@@ -103,7 +143,10 @@ export function seedAdmin(db) {
     const existingUser = db.prepare('SELECT id FROM users WHERE email = ?').get(email);
     if (existingUser) {
         db.prepare(`
-            UPDATE users SET role = 'admin', updated_at = datetime('now')
+            UPDATE users
+            SET role = 'admin',
+                email_verified_at = COALESCE(email_verified_at, datetime('now')),
+                updated_at = datetime('now')
             WHERE id = ?
         `).run(existingUser.id);
         return;
@@ -111,7 +154,9 @@ export function seedAdmin(db) {
 
     const hash = bcrypt.hashSync(password, 12);
     db.prepare(`
-        INSERT INTO users (email, username, password_hash, display_name, role)
-        VALUES (?, ?, ?, ?, 'admin')
+        INSERT INTO users (
+            email, username, password_hash, display_name, role, email_verified_at
+        )
+        VALUES (?, ?, ?, ?, 'admin', datetime('now'))
     `).run(email, username, hash, '관리자');
 }
diff --git a/api/src/index.js b/api/src/index.js
index 7885aca..f85bba5 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -29,7 +29,7 @@ app.use(cors({ origin: corsOrigins, credentials: true }));
 app.use(express.json({ limit: '20mb' }));
 
 app.get('/api/v1/health', (_req, res) => {
-    res.json({ ok: true, version: '4.0.11' });
+    res.json({ ok: true, version: '4.0.12' });
 });
 
 app.use('/api/v1/auth', createAuthRouter(db));
@@ -47,7 +47,7 @@ app.use((err, _req, res, _next) => {
 });
 
 app.listen(PORT, () => {
-    console.log(`UNIARE API v4.0.11 listening on :${PORT}`);
+    console.log(`UNIARE API v4.0.12 listening on :${PORT}`);
     console.log(`DB: ${DB_PATH}`);
     console.log(`DATAS: ${process.env.DATAS_PATH || '(default ../datas)'}`);
 });
diff --git a/api/src/routes/admin.js b/api/src/routes/admin.js
index 93a775f..4e23eb7 100644
--- a/api/src/routes/admin.js
+++ b/api/src/routes/admin.js
@@ -160,10 +160,29 @@ export function createAdminRouter(db) {
             const values = [nowIso()];
 
             if (trimmedEmail) {
+                if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(trimmedEmail) || trimmedEmail.length > 254) {
+                    return res.status(400).json({ error: '올바른 이메일 주소를 입력하세요.' });
+                }
                 fields.push('email = ?');
                 values.push(trimmedEmail);
             }
             if (trimmedUsername) {
+                if (
+                    trimmedUsername.length < 2 ||
+                    trimmedUsername.length > 30 ||
+                    !/^[\p{L}\p{N}_-]+$/u.test(trimmedUsername)
+                ) {
+                    return res.status(400).json({
+                        error: '사용자명은 2~30자의 한글·영문·숫자·밑줄·하이픈만 사용할 수 있습니다.',
+                    });
+                }
+                const duplicate = db.prepare(`
+                    SELECT id FROM users
+                    WHERE username = ? COLLATE NOCASE AND id != ?
+                `).get(trimmedUsername, targetId);
+                if (duplicate) {
+                    return res.status(409).json({ error: '이미 사용 중인 사용자명입니다.' });
+                }
                 fields.push('username = ?', 'display_name = ?');
                 values.push(trimmedUsername, trimmedUsername);
             }
diff --git a/api/src/routes/auth.js b/api/src/routes/auth.js
index 116eb6b..125914d 100644
--- a/api/src/routes/auth.js
+++ b/api/src/routes/auth.js
@@ -1,9 +1,79 @@
 import { Router } from 'express';
 import path from 'path';
+import crypto from 'crypto';
 import bcrypt from 'bcryptjs';
 import { signToken, requireAuth } from '../middleware/auth.js';
 import { nowIso } from '../utils.js';
 import { getAvatarFilePath, getAvatarUrl, saveAvatarImage, deleteAvatarImage } from '../services/avatarImage.js';
+import { sendPasswordResetEmail, sendVerificationEmail } from '../services/emailService.js';
+
+const EMAIL_PATTERN = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+const USERNAME_PATTERN = /^[\p{L}\p{N}_-]+$/u;
+const VERIFICATION_TOKEN_TTL_MS = 24 * 60 * 60 * 1000;
+const PASSWORD_RESET_TOKEN_TTL_MS = 30 * 60 * 1000;
+const EMAIL_RESEND_COOLDOWN_MS = 60 * 1000;
+
+/**
+ * 인증용 원문 토큰과 DB 저장용 해시 생성
+ * @returns {{token: string, tokenHash: string}}
+ */
+function createOpaqueToken() {
+    const token = crypto.randomBytes(32).toString('base64url');
+    return {
+        token,
+        tokenHash: crypto.createHash('sha256').update(token).digest('hex'),
+    };
+}
+
+/**
+ * 원문 토큰 해시
+ * @param {string} token
+ * @returns {string}
+ */
+function hashToken(token) {
+    return crypto.createHash('sha256').update(token).digest('hex');
+}
+
+/**
+ * 사용자 인증 토큰 저장. 같은 목적의 기존 미사용 토큰은 폐기한다.
+ * @param {import('better-sqlite3').Database} db
+ * @param {number} userId
+ * @param {'verify_email'|'reset_password'} type
+ * @param {number} ttlMs
+ * @returns {string}
+ */
+function issueAuthToken(db, userId, type, ttlMs) {
+    const { token, tokenHash } = createOpaqueToken();
+    const expiresAt = new Date(Date.now() + ttlMs).toISOString();
+    const transaction = db.transaction(() => {
+        db.prepare('DELETE FROM auth_tokens WHERE user_id = ? AND type = ? AND used_at IS NULL')
+            .run(userId, type);
+        db.prepare(`
+            INSERT INTO auth_tokens (user_id, type, token_hash, expires_at)
+            VALUES (?, ?, ?, ?)
+        `).run(userId, type, tokenHash, expiresAt);
+    });
+    transaction();
+    return token;
+}
+
+/**
+ * 이메일 형식 검증
+ * @param {string} email
+ * @returns {boolean}
+ */
+function isValidEmail(email) {
+    return email.length <= 254 && EMAIL_PATTERN.test(email);
+}
+
+/**
+ * 사용자명 형식 검증
+ * @param {string} username
+ * @returns {boolean}
+ */
+function isValidUsername(username) {
+    return username.length >= 2 && username.length <= 30 && USERNAME_PATTERN.test(username);
+}
 
 /**
  * DB 사용자 행을 API 응답 형식으로 변환
@@ -43,59 +113,158 @@ export function createAuthRouter(db) {
         });
     });
 
-    router.post('/register', (req, res) => {
+    router.post('/register', async (req, res, next) => {
         const { email, username, password } = req.body || {};
 
         if (!email || !username || !password) {
             return res.status(400).json({ error: '이메일, 사용자명, 비밀번호는 필수입니다.' });
         }
-        if (password.length < 8) {
+        const normalizedEmail = String(email).trim().toLowerCase();
+        const trimmedUsername = String(username).trim();
+        const rawPassword = String(password);
+        if (!isValidEmail(normalizedEmail)) {
+            return res.status(400).json({ error: '올바른 이메일 주소를 입력하세요.' });
+        }
+        if (!isValidUsername(trimmedUsername)) {
+            return res.status(400).json({
+                error: '사용자명은 2~30자의 한글·영문·숫자·밑줄·하이픈만 사용할 수 있습니다.',
+            });
+        }
+        if (rawPassword.length < 8) {
             return res.status(400).json({ error: '비밀번호는 8자 이상이어야 합니다.' });
         }
 
-        const hash = bcrypt.hashSync(password, 12);
+        if (db.prepare('SELECT id FROM users WHERE email = ?').get(normalizedEmail)) {
+            return res.status(409).json({ error: '이미 사용 중인 이메일입니다.' });
+        }
+        if (db.prepare('SELECT id FROM users WHERE username = ? COLLATE NOCASE').get(trimmedUsername)) {
+            return res.status(409).json({ error: '이미 사용 중인 사용자명입니다.' });
+        }
 
+        const hash = bcrypt.hashSync(rawPassword, 12);
+        let userId;
         try {
-            const trimmedUsername = username.trim();
             const result = db.prepare(`
-                INSERT INTO users (email, username, password_hash, display_name)
-                VALUES (?, ?, ?, ?)
-            `).run(email.trim().toLowerCase(), trimmedUsername, hash, trimmedUsername);
+                INSERT INTO users (email, username, password_hash, display_name, email_verified_at)
+                VALUES (?, ?, ?, ?, NULL)
+            `).run(normalizedEmail, trimmedUsername, hash, trimmedUsername);
+            userId = Number(result.lastInsertRowid);
 
-            const user = db.prepare(`
-                SELECT id, email, username, role, created_at AS createdAt, updated_at AS updatedAt
-                FROM users WHERE id = ?
-            `).get(result.lastInsertRowid);
-
-            const safeUser = toUserResponse(user);
-            const token = signToken(safeUser);
-            res.status(201).json({ token, user: safeUser });
+            const token = issueAuthToken(db, userId, 'verify_email', VERIFICATION_TOKEN_TTL_MS);
+            await sendVerificationEmail({
+                email: normalizedEmail,
+                username: trimmedUsername,
+                token,
+            });
+            res.status(201).json({
+                ok: true,
+                email: normalizedEmail,
+                message: '인증 메일을 보냈습니다. 이메일 인증 후 로그인해 주세요.',
+            });
         } catch (err) {
+            if (userId) {
+                db.prepare('DELETE FROM users WHERE id = ? AND email_verified_at IS NULL').run(userId);
+            }
             if (String(err.message).includes('UNIQUE')) {
                 return res.status(409).json({ error: '이미 사용 중인 이메일 또는 사용자명입니다.' });
             }
-            throw err;
+            next(err);
         }
     });
 
+    router.post('/resend-verification', async (req, res, next) => {
+        const normalizedEmail = String(req.body?.email || '').trim().toLowerCase();
+        if (!isValidEmail(normalizedEmail)) {
+            return res.status(400).json({ error: '올바른 이메일 주소를 입력하세요.' });
+        }
+
+        const user = db.prepare(`
+            SELECT id, email, username, email_verified_at
+            FROM users WHERE email = ? AND is_active = 1
+        `).get(normalizedEmail);
+        if (!user || user.email_verified_at) {
+            return res.json({
+                ok: true,
+                message: '인증이 필요한 계정이라면 이메일을 다시 보냈습니다.',
+            });
+        }
+
+        const recent = db.prepare(`
+            SELECT created_at
+            FROM auth_tokens
+            WHERE user_id = ? AND type = 'verify_email'
+            ORDER BY id DESC
+            LIMIT 1
+        `).get(user.id);
+        if (recent && Date.now() - new Date(`${recent.created_at}Z`).getTime() < EMAIL_RESEND_COOLDOWN_MS) {
+            return res.status(429).json({ error: '인증 메일은 1분 후 다시 요청할 수 있습니다.' });
+        }
+
+        try {
+            const token = issueAuthToken(db, user.id, 'verify_email', VERIFICATION_TOKEN_TTL_MS);
+            await sendVerificationEmail({ email: user.email, username: user.username, token });
+            res.json({ ok: true, message: '인증 메일을 다시 보냈습니다.' });
+        } catch (err) {
+            next(err);
+        }
+    });
+
+    router.post('/verify-email', (req, res) => {
+        const token = String(req.body?.token || '');
+        if (!token) {
+            return res.status(400).json({ error: '인증 토큰이 없습니다.' });
+        }
+        const tokenHash = hashToken(token);
+        const row = db.prepare(`
+            SELECT t.id, t.user_id AS userId, t.expires_at AS expiresAt, t.used_at AS usedAt,
+                   u.email_verified_at AS emailVerifiedAt
+            FROM auth_tokens t
+            JOIN users u ON u.id = t.user_id
+            WHERE t.token_hash = ? AND t.type = 'verify_email' AND u.is_active = 1
+        `).get(tokenHash);
+        if (!row || row.usedAt || new Date(row.expiresAt).getTime() <= Date.now()) {
+            return res.status(400).json({ error: '인증 링크가 유효하지 않거나 만료되었습니다.' });
+        }
+
+        const transaction = db.transaction(() => {
+            db.prepare(`
+                UPDATE users
+                SET email_verified_at = ?, updated_at = ?
+                WHERE id = ?
+            `).run(nowIso(), nowIso(), row.userId);
+            db.prepare('UPDATE auth_tokens SET used_at = ? WHERE id = ?').run(nowIso(), row.id);
+        });
+        transaction();
+        res.json({ ok: true, message: '이메일 인증이 완료되었습니다. 로그인해 주세요.' });
+    });
+
     router.post('/login', (req, res) => {
         const { email, password } = req.body || {};
         if (!email || !password) {
             return res.status(400).json({ error: '이메일과 비밀번호를 입력하세요.' });
         }
+        const normalizedEmail = String(email).trim().toLowerCase();
+        const rawPassword = String(password);
 
         const user = db.prepare(`
-            SELECT id, email, username, password_hash, display_name, avatar_url, role, is_active
+            SELECT id, email, username, password_hash, display_name, avatar_url, role, is_active,
+                   email_verified_at
             FROM users WHERE email = ?
-        `).get(email.trim().toLowerCase());
+        `).get(normalizedEmail);
 
         if (!user || !user.is_active) {
             return res.status(401).json({ error: '이메일 또는 비밀번호가 올바르지 않습니다.' });
         }
 
-        if (!bcrypt.compareSync(password, user.password_hash)) {
+        if (!bcrypt.compareSync(rawPassword, user.password_hash)) {
             return res.status(401).json({ error: '이메일 또는 비밀번호가 올바르지 않습니다.' });
         }
+        if (!user.email_verified_at) {
+            return res.status(403).json({
+                error: '이메일 인증이 필요합니다. 가입한 이메일의 인증 링크를 확인해 주세요.',
+                code: 'EMAIL_NOT_VERIFIED',
+            });
+        }
 
         db.prepare('UPDATE users SET last_login_at = ? WHERE id = ?').run(nowIso(), user.id);
         const row = db.prepare(`
@@ -107,6 +276,80 @@ export function createAuthRouter(db) {
         res.json({ token: signToken(safeUser), user: safeUser });
     });
 
+    router.post('/forgot-password', async (req, res, next) => {
+        const normalizedEmail = String(req.body?.email || '').trim().toLowerCase();
+        if (!isValidEmail(normalizedEmail)) {
+            return res.status(400).json({ error: '올바른 이메일 주소를 입력하세요.' });
+        }
+        const genericResponse = {
+            ok: true,
+            message: '가입된 이메일이라면 비밀번호 재설정 링크를 보냈습니다.',
+        };
+        const user = db.prepare(`
+            SELECT id, email, username
+            FROM users
+            WHERE email = ? AND is_active = 1 AND email_verified_at IS NOT NULL
+        `).get(normalizedEmail);
+        if (!user) {
+            return res.json(genericResponse);
+        }
+
+        try {
+            const recent = db.prepare(`
+                SELECT created_at
+                FROM auth_tokens
+                WHERE user_id = ? AND type = 'reset_password'
+                ORDER BY id DESC
+                LIMIT 1
+            `).get(user.id);
+            if (recent && Date.now() - new Date(`${recent.created_at}Z`).getTime() < EMAIL_RESEND_COOLDOWN_MS) {
+                return res.json(genericResponse);
+            }
+            const token = issueAuthToken(db, user.id, 'reset_password', PASSWORD_RESET_TOKEN_TTL_MS);
+            await sendPasswordResetEmail({ email: user.email, username: user.username, token });
+            res.json(genericResponse);
+        } catch (err) {
+            next(err);
+        }
+    });
+
+    router.post('/reset-password', (req, res) => {
+        const token = String(req.body?.token || '');
+        const newPassword = String(req.body?.newPassword || '');
+        if (!token) {
+            return res.status(400).json({ error: '재설정 토큰이 없습니다.' });
+        }
+        if (newPassword.length < 8) {
+            return res.status(400).json({ error: '새 비밀번호는 8자 이상이어야 합니다.' });
+        }
+
+        const row = db.prepare(`
+            SELECT t.id, t.user_id AS userId, t.expires_at AS expiresAt, t.used_at AS usedAt
+            FROM auth_tokens t
+            JOIN users u ON u.id = t.user_id
+            WHERE t.token_hash = ? AND t.type = 'reset_password' AND u.is_active = 1
+        `).get(hashToken(token));
+        if (!row || row.usedAt || new Date(row.expiresAt).getTime() <= Date.now()) {
+            return res.status(400).json({ error: '재설정 링크가 유효하지 않거나 만료되었습니다.' });
+        }
+
+        const passwordHash = bcrypt.hashSync(newPassword, 12);
+        const transaction = db.transaction(() => {
+            db.prepare(`
+                UPDATE users
+                SET password_hash = ?, updated_at = ?
+                WHERE id = ? AND is_active = 1
+            `).run(passwordHash, nowIso(), row.userId);
+            db.prepare(`
+                UPDATE auth_tokens
+                SET used_at = ?
+                WHERE user_id = ? AND type = 'reset_password' AND used_at IS NULL
+            `).run(nowIso(), row.userId);
+        });
+        transaction();
+        res.json({ ok: true, message: '비밀번호가 변경되었습니다. 새 비밀번호로 로그인해 주세요.' });
+    });
+
     router.get('/me', requireAuth, (req, res) => {
         db.prepare('UPDATE users SET last_login_at = ? WHERE id = ? AND is_active = 1').run(
             nowIso(),
@@ -139,10 +382,29 @@ export function createAuthRouter(db) {
         const trimmedUsername = username?.trim();
 
         if (trimmedEmail) {
-            fields.push('email = ?');
-            values.push(trimmedEmail);
+            const current = db.prepare('SELECT email FROM users WHERE id = ?').get(req.user.id);
+            if (!isValidEmail(trimmedEmail)) {
+                return res.status(400).json({ error: '올바른 이메일 주소를 입력하세요.' });
+            }
+            if (trimmedEmail !== current?.email) {
+                return res.status(400).json({
+                    error: '인증된 이메일 주소는 현재 직접 변경할 수 없습니다.',
+                });
+            }
         }
         if (trimmedUsername) {
+            if (!isValidUsername(trimmedUsername)) {
+                return res.status(400).json({
+                    error: '사용자명은 2~30자의 한글·영문·숫자·밑줄·하이픈만 사용할 수 있습니다.',
+                });
+            }
+            const duplicate = db.prepare(`
+                SELECT id FROM users
+                WHERE username = ? COLLATE NOCASE AND id != ?
+            `).get(trimmedUsername, req.user.id);
+            if (duplicate) {
+                return res.status(409).json({ error: '이미 사용 중인 사용자명입니다.' });
+            }
             fields.push('username = ?', 'display_name = ?');
             values.push(trimmedUsername, trimmedUsername);
         }
diff --git a/api/src/services/emailService.js b/api/src/services/emailService.js
new file mode 100644
index 0000000..12f5188
--- /dev/null
+++ b/api/src/services/emailService.js
@@ -0,0 +1,111 @@
+const RESEND_API_URL = 'https://api.resend.com/emails';
+
+/**
+ * HTML 특수문자 이스케이프
+ * @param {string} value
+ * @returns {string}
+ */
+function escapeHtml(value) {
+    return String(value)
+        .replaceAll('&', '&amp;')
+        .replaceAll('<', '&lt;')
+        .replaceAll('>', '&gt;')
+        .replaceAll('"', '&quot;')
+        .replaceAll("'", '&#039;');
+}
+
+/**
+ * 서비스 공개 URL
+ * @returns {string}
+ */
+function getAppBaseUrl() {
+    const value = process.env.APP_BASE_URL?.trim().replace(/\/+$/, '');
+    if (!value) {
+        throw new Error('APP_BASE_URL 환경변수가 설정되지 않았습니다.');
+    }
+    return value;
+}
+
+/**
+ * Resend 메일 전송
+ * @param {{to: string, subject: string, html: string, text: string, idempotencyKey: string}} message
+ * @returns {Promise<object>}
+ */
+async function sendEmail(message) {
+    const apiKey = process.env.RESEND_API_KEY?.trim();
+    const from = process.env.RESEND_FROM_EMAIL?.trim();
+    if (!apiKey || !from) {
+        throw new Error('RESEND_API_KEY 또는 RESEND_FROM_EMAIL 환경변수가 설정되지 않았습니다.');
+    }
+
+    const response = await fetch(RESEND_API_URL, {
+        method: 'POST',
+        headers: {
+            Authorization: `Bearer ${apiKey}`,
+            'Content-Type': 'application/json',
+            'Idempotency-Key': message.idempotencyKey,
+        },
+        body: JSON.stringify({
+            from,
+            to: [message.to],
+            subject: message.subject,
+            html: message.html,
+            text: message.text,
+        }),
+    });
+    const data = await response.json().catch(() => ({}));
+    if (!response.ok) {
+        throw new Error(`Resend 메일 전송 실패 (${response.status}): ${data.message || '알 수 없는 오류'}`);
+    }
+    return data;
+}
+
+/**
+ * 이메일 인증 메일 전송
+ * @param {{email: string, username: string, token: string}} params
+ * @returns {Promise<object>}
+ */
+export function sendVerificationEmail({ email, username, token }) {
+    const url = `${getAppBaseUrl()}/verify-email.html?token=${encodeURIComponent(token)}`;
+    const safeName = escapeHtml(username);
+    const safeUrl = escapeHtml(url);
+    return sendEmail({
+        to: email,
+        subject: '[UNIARE] 이메일 주소를 인증해 주세요',
+        idempotencyKey: `verify-${token.slice(0, 32)}`,
+        html: `
+            <div style="font-family:Arial,sans-serif;line-height:1.6;color:#0f172a">
+                <h1 style="font-size:22px">UNIARE 이메일 인증</h1>
+                <p>${safeName}님, 아래 버튼을 눌러 회원가입을 완료해 주세요.</p>
+                <p><a href="${safeUrl}" style="display:inline-block;padding:12px 18px;border-radius:10px;background:#2563eb;color:#fff;text-decoration:none;font-weight:700">이메일 인증하기</a></p>
+                <p style="font-size:13px;color:#64748b">이 링크는 24시간 동안 한 번만 사용할 수 있습니다.</p>
+            </div>
+        `,
+        text: `${username}님, 다음 링크에서 UNIARE 이메일 인증을 완료해 주세요.\n${url}\n\n이 링크는 24시간 동안 한 번만 사용할 수 있습니다.`,
+    });
+}
+
+/**
+ * 비밀번호 재설정 메일 전송
+ * @param {{email: string, username: string, token: string}} params
+ * @returns {Promise<object>}
+ */
+export function sendPasswordResetEmail({ email, username, token }) {
+    const url = `${getAppBaseUrl()}/reset-password.html?token=${encodeURIComponent(token)}`;
+    const safeName = escapeHtml(username);
+    const safeUrl = escapeHtml(url);
+    return sendEmail({
+        to: email,
+        subject: '[UNIARE] 비밀번호 재설정 안내',
+        idempotencyKey: `reset-${token.slice(0, 32)}`,
+        html: `
+            <div style="font-family:Arial,sans-serif;line-height:1.6;color:#0f172a">
+                <h1 style="font-size:22px">UNIARE 비밀번호 재설정</h1>
+                <p>${safeName}님, 요청하신 비밀번호 재설정을 진행해 주세요.</p>
+                <p><a href="${safeUrl}" style="display:inline-block;padding:12px 18px;border-radius:10px;background:#2563eb;color:#fff;text-decoration:none;font-weight:700">비밀번호 재설정하기</a></p>
+                <p style="font-size:13px;color:#64748b">이 링크는 30분 동안 한 번만 사용할 수 있습니다. 요청하지 않았다면 이 메일을 무시하세요.</p>
+            </div>
+        `,
+        text: `${username}님, 다음 링크에서 UNIARE 비밀번호를 재설정해 주세요.\n${url}\n\n이 링크는 30분 동안 한 번만 사용할 수 있습니다.`,
+    });
+}
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index a0a1784..c78c93c 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -14,6 +14,9 @@ services:
       - PORT=3000
       - JWT_SECRET=${JWT_SECRET}
       - JWT_EXPIRES=${JWT_EXPIRES:-7d}
+      - APP_BASE_URL=${APP_BASE_URL}
+      - RESEND_API_KEY=${RESEND_API_KEY}
+      - RESEND_FROM_EMAIL=${RESEND_FROM_EMAIL}
       - ADMIN_EMAIL=${ADMIN_EMAIL}
       - ADMIN_PASSWORD=${ADMIN_PASSWORD}
       - ADMIN_USERNAME=${ADMIN_USERNAME:-admin}
@@ -49,6 +52,9 @@ services:
       - ./result.html:/usr/share/nginx/html/result.html:ro
       - ./login.html:/usr/share/nginx/html/login.html:ro
       - ./signup.html:/usr/share/nginx/html/signup.html:ro
+      - ./verify-email.html:/usr/share/nginx/html/verify-email.html:ro
+      - ./forgot-password.html:/usr/share/nginx/html/forgot-password.html:ro
+      - ./reset-password.html:/usr/share/nginx/html/reset-password.html:ro
       - ./deckHistory.html:/usr/share/nginx/html/deckHistory.html:ro
       - ./preset.html:/usr/share/nginx/html/preset.html:ro
       - ./profile.html:/usr/share/nginx/html/profile.html:ro
diff --git a/docker-compose.yml b/docker-compose.yml
index c275912..b9392a0 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -9,6 +9,9 @@ services:
       - PORT=3000
       - JWT_SECRET=${JWT_SECRET}
       - JWT_EXPIRES=${JWT_EXPIRES:-7d}
+      - APP_BASE_URL=${APP_BASE_URL}
+      - RESEND_API_KEY=${RESEND_API_KEY}
+      - RESEND_FROM_EMAIL=${RESEND_FROM_EMAIL}
       - ADMIN_EMAIL=${ADMIN_EMAIL}
       - ADMIN_PASSWORD=${ADMIN_PASSWORD}
       - ADMIN_USERNAME=${ADMIN_USERNAME:-admin}
diff --git a/docs/changelog.md b/docs/changelog.md
index 32e1ab6..64d2e21 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,19 @@
 # 변경사항
 
+## v4.0.12
+
+### 이메일 인증 회원가입
+
+새로 가입하는 사용자는 가입한 이메일로 전송된 링크를 눌러야 로그인할 수 있습니다. 인증 메일을 받지 못한 경우 인증 화면에서 다시 요청할 수 있습니다.
+
+### 비밀번호 직접 재설정
+
+로그인 화면의 `비밀번호를 잊으셨나요?`에서 가입 이메일로 재설정 링크를 받아 새 비밀번호를 설정할 수 있습니다.
+
+### 중복 가입 검증 강화
+
+이메일 형식을 서버에서도 확인하며, 사용자명은 영문 대소문자만 다른 경우에도 중복 가입을 차단합니다.
+
 ## v4.0.11
 
 ### 로그인 유지 선택
diff --git a/docs/deploy.md b/docs/deploy.md
index 02db118..bb05c06 100644
--- a/docs/deploy.md
+++ b/docs/deploy.md
@@ -29,6 +29,9 @@ JWT_SECRET=32자_이상의_랜덤_문자열
 ADMIN_EMAIL=관리자_이메일
 ADMIN_PASSWORD=8자_이상의_비밀번호
 WEB_PORT=44082
+APP_BASE_URL=http://localhost:44082
+RESEND_API_KEY=Resend_API_Key
+RESEND_FROM_EMAIL=UNIARE <인증된_발신주소>
 ```
 
 랜덤 문자열은 `openssl rand -hex 32`로 만들 수 있다.
@@ -59,15 +62,27 @@ ADMIN_PASSWORD=8자_이상의_비밀번호
 ADMIN_USERNAME=admin
 WEB_PORT=44082
 CORS_ORIGINS=https://uniare.sori.studio
+APP_BASE_URL=https://uniare.sori.studio
+RESEND_API_KEY=Resend_API_Key
+RESEND_FROM_EMAIL=UNIARE <account@인증된_발신도메인>
 ```
 
+Resend에서 소유한 도메인 또는 발신용 하위 도메인을 먼저 추가하고 DNS 인증을 완료해야 한다. API Key에는 메일 발송 권한이 필요하며 `.env` 외에는 기록하지 않는다.
+
 Docker 실행: `docker compose -f docker-compose.prod.yml up -d --build`
 
 상태 확인: `docker compose -f docker-compose.prod.yml ps`
 
 API 확인: `curl -fsS http://localhost:44082/api/v1/health`
 
-정상이면 `{"ok":true,"version":"4.0.11"}`이 표시된다.
+정상이면 `{"ok":true,"version":"4.0.12"}`이 표시된다.
+
+이메일 기능 확인:
+
+1. 실제 수신 가능한 주소로 신규 가입한다.
+2. 인증 메일 링크를 누르기 전 로그인이 차단되는지 확인한다.
+3. 인증 후 로그인되는지 확인한다.
+4. 로그인 화면의 `비밀번호를 잊으셨나요?`에서 재설정 메일과 새 비밀번호 로그인을 확인한다.
 
 NAS 리버스 프록시는 `https://uniare.sori.studio`을 `http://<NAS_IP>:44082`로 연결한다.
 
@@ -142,6 +157,8 @@ curl -s http://127.0.0.1:44082/script/deck-favorites.js | tail -1
 
 HTML·`style/`·`script/`만 바뀐 경우 API 컨테이너 재시작은 필요 없다.
 
+이메일 기능은 API와 Compose 환경 변수가 함께 바뀌므로 `git pull`만으로 반영되지 않는다. 반드시 `.env` 설정 후 전체 스택을 다시 빌드한다.
+
 ## 4. 전체 업데이트
 
 `api/`, `nginx/`, Dockerfile, Compose 설정을 변경했다면 NAS 프로젝트 폴더에서 다음 명령을 실행한다.
diff --git a/docs/history.md b/docs/history.md
index c1b02bb..bc23e9c 100644
--- a/docs/history.md
+++ b/docs/history.md
@@ -1,5 +1,10 @@
 # 의사결정 이력
 
+## 2026-06-25 v4.0.12 — 신규 가입부터 이메일 소유 확인 적용
+
+💡 기존 회원을 잠그지 않으면서 허위 이메일 가입과 관리자 의존 비밀번호 초기화를 막기 위함.
+🔧 기존 회원은 인증 완료로 이관하고 신규 회원은 Resend 인증 후 로그인, 재설정 토큰은 해시·1회용·30분 만료로 저장.
+
 ## 2026-06-24 v4.0.11 — 로그인 유지와 실제 접속 시각을 분리 관리
 
 💡 브라우저 종료 후 로그인 유지 여부는 사용자가 선택하고, 접속 기록은 재로그인 없이도 실제 이용을 반영해야 하기 때문.
diff --git a/docs/map.md b/docs/map.md
index f5337ff..afac888 100644
--- a/docs/map.md
+++ b/docs/map.md
@@ -18,6 +18,15 @@ login.html
 /signup.html
 signup.html
 
+/verify-email.html
+verify-email.html
+
+/forgot-password.html
+forgot-password.html
+
+/reset-password.html
+reset-password.html
+
 /profile.html
 profile.html
 
@@ -110,9 +119,12 @@ api/src/db.js
 JWT 인증·권한
 api/src/middleware/auth.js
 
-회원가입·로그인·프로필·인증 세션 접속 시각 갱신
+회원가입·이메일 인증·비밀번호 재설정·로그인·프로필·인증 세션 접속 시각 갱신
 api/src/routes/auth.js
 
+Resend 인증·비밀번호 재설정 메일
+api/src/services/emailService.js
+
 덱 저장·조회·공개 목록
 api/src/routes/decks.js
 
diff --git a/docs/spec.md b/docs/spec.md
index 89eadfe..000cfe8 100644
--- a/docs/spec.md
+++ b/docs/spec.md
@@ -3,7 +3,7 @@
 ## 프로젝트 개요
 
 - 서비스명: `UNIARE - Union Arena Deck Builder`
-- 현재 버전: `v4.0.11`
+- 현재 버전: `v4.0.12`
 - 프론트: 정적 HTML, CSS, JavaScript
 - 백엔드: Express, SQLite(`better-sqlite3`)
 - 운영: Docker Compose 기반 Nginx + API
@@ -20,6 +20,9 @@
 | `/result.html` | 덱 미리보기, PNG 다운로드, 회원 덱 저장 |
 | `/login.html` | 로그인 |
 | `/signup.html` | 회원가입 |
+| `/verify-email.html` | 가입 이메일 인증·인증 메일 재전송 |
+| `/forgot-password.html` | 비밀번호 재설정 메일 요청 |
+| `/reset-password.html?token=<token>` | 1회용 토큰으로 비밀번호 재설정 |
 | `/profile.html` | 이메일·사용자명·아바타·비밀번호·덱 공개 기본값 관리 |
 | `/deckHistory.html` | 내 덱 검색·필터·이름 변경·공개 설정·삭제·불러오기 |
 | `/preset.html` | 공개 사용자 덱 검색·필터·즐겨찾기·불러오기 |
@@ -85,6 +88,12 @@
 ## 인증 및 권한
 
 - 비밀번호는 bcrypt 비용 12로 해시한다.
+- 신규 회원은 Resend 인증 링크로 이메일 소유 확인을 완료해야 로그인할 수 있다.
+- 기존 회원은 이메일 인증 기능 배포 시 인증 완료 상태로 마이그레이션한다.
+- 인증 링크는 24시간, 비밀번호 재설정 링크는 30분 동안 한 번만 사용할 수 있다.
+- 인증·재설정 원문 토큰은 DB에 저장하지 않고 SHA-256 해시만 저장한다.
+- 사용자명은 대소문자를 구분하지 않고 중복을 차단한다.
+- 인증된 이메일은 프로필에서 직접 변경할 수 없다.
 - JWT 기본 만료는 7일이며 `JWT_EXPIRES`로 변경할 수 있다.
 - 로그인 유지 선택 시 브라우저를 닫아도 인증 정보를 유지하고, 미선택 시 현재 브라우저 세션에서만 유지한다.
 - 인증된 화면 진입 시 `/auth/me` 검증과 함께 `last_login_at`을 갱신한다.
@@ -123,8 +132,19 @@
 | `default_deck_public` | 덱 저장 기본 공개 여부 |
 | `skip_deck_public_prompt` | 저장 시 공개 확인 생략 여부 |
 | `last_login_at` | 마지막 로그인 또는 인증 세션 확인 시각 |
+| `email_verified_at` | 이메일 인증 완료 시각. 기존 회원은 마이그레이션 시 채움 |
 | `created_at`, `updated_at` | 생성·수정 시각 |
 
+### `auth_tokens`
+
+| 컬럼 | 설명 |
+|---|---|
+| `user_id` | 인증 대상 사용자 |
+| `type` | `verify_email` 또는 `reset_password` |
+| `token_hash` | 원문 토큰의 SHA-256 해시 |
+| `expires_at`, `used_at` | 만료·사용 시각 |
+| `created_at` | 발급 시각 |
+
 ### `decks`
 
 | 컬럼 | 설명 |
@@ -162,8 +182,12 @@
 
 | Method | Path | 권한 | 기능 |
 |---|---|---|---|
-| POST | `/api/v1/auth/register` | 공개 | 회원가입 |
+| POST | `/api/v1/auth/register` | 공개 | 미인증 회원 생성·가입 인증 메일 발송 |
+| POST | `/api/v1/auth/resend-verification` | 공개 | 가입 인증 메일 재전송 |
+| POST | `/api/v1/auth/verify-email` | 공개 | 이메일 인증 토큰 확인 |
 | POST | `/api/v1/auth/login` | 공개 | 로그인과 JWT 발급, `last_login_at` 갱신 |
+| POST | `/api/v1/auth/forgot-password` | 공개 | 비밀번호 재설정 메일 요청 |
+| POST | `/api/v1/auth/reset-password` | 공개 | 1회용 토큰으로 비밀번호 변경 |
 | GET | `/api/v1/auth/me` | 회원 | 내 정보와 인증 세션 확인, `last_login_at` 갱신 |
 | PUT | `/api/v1/auth/me` | 회원 | 프로필·덱 저장 설정 변경 |
 | POST | `/api/v1/auth/me/password` | 회원 | 비밀번호 변경 |
@@ -216,3 +240,4 @@
 - `admin.html`은 3개 언어 번역 적용이 완료되지 않았다.
 - Homepage 전용 `GET /api/homepage` 엔드포인트는 아직 구현되지 않았다.
 - 현재 Compose의 컨테이너명(`uniare-api`, `uniare-web`)과 데이터 볼륨명(`uniare-data`)은 고정값이며 환경 변수화되지 않았다.
+- Resend 발송은 운영 `.env`의 API 키·발신 주소와 Resend에서 인증된 발신 도메인이 필요하다.
diff --git a/docs/todo.md b/docs/todo.md
index 8833b3e..8a07cd2 100644
--- a/docs/todo.md
+++ b/docs/todo.md
@@ -5,6 +5,7 @@
 - NAS에서 `uniare-web`, `uniare-api` 스택의 재기동과 헬스 체크를 최종 확인한다.
 - SEO 메타데이터 배포 후 Google Search Console에서 메인 URL 재색인을 요청한다.
 - 운영 `.env`의 `JWT_SECRET`, 관리자 계정, CORS 허용 도메인을 실제 환경 기준으로 점검한다.
+- Resend에서 발신용 하위 도메인을 인증하고 운영 `.env`의 `RESEND_API_KEY`, `RESEND_FROM_EMAIL`, `APP_BASE_URL`을 설정한 뒤 실제 수신을 확인한다.
 - DB와 업로드 이미지(`api/data/previews`, `api/data/avatars`)의 정기 백업·복구 절차를 검증한다.
 - 원격 저장소의 Git LFS 업로드 상태와 용량 정책을 확인한다.
 - Compose의 컨테이너명과 데이터 볼륨명을 환경 변수로 관리할지 결정하고, 적용 시 운영 마이그레이션 절차를 작성한다.
diff --git a/docs/update.md b/docs/update.md
index cc11c7e..b08b30b 100644
--- a/docs/update.md
+++ b/docs/update.md
@@ -1,5 +1,15 @@
 # 업데이트 이력
 
+## 2026-06-25 / v4.0.12 — 이메일 인증·비밀번호 재설정
+
+### 수행 작업
+- 신규 회원가입 시 Resend 이메일 인증 링크 발송, 인증 완료 전 로그인 차단
+- 인증 메일 재전송과 24시간·1회용 인증 토큰 적용
+- 비밀번호 찾기·30분 만료 재설정 링크·사용자 직접 비밀번호 변경 화면 추가
+- 이메일 형식 서버 검증과 사용자명 대소문자 무시 중복 검사 적용
+- 기존 회원은 배포 시 이메일 인증 완료 상태로 마이그레이션
+- Resend 환경 변수와 운영 배포·확인 절차 문서화
+
 ## 2026-06-24 / v4.0.11 — 로그인 유지·마지막 접속 갱신 개선
 
 ### 수행 작업
diff --git a/forgot-password.html b/forgot-password.html
new file mode 100644
index 0000000..29cf8ea
--- /dev/null
+++ b/forgot-password.html
@@ -0,0 +1,43 @@
+<!doctype html>
+<html lang="ko">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <link rel="stylesheet" href="./style/output.css?v=4.0.12" />
+        <title>비밀번호 찾기 - UNIARE</title>
+    </head>
+    <body class="app-page">
+        <nav class="app-nav">
+            <div class="app-nav-inner">
+                <a href="/" class="app-brand"><img src="/images/assets/uniare-h48.png" alt="UNIARE" class="app-brand-logo" height="32" /></a>
+            </div>
+        </nav>
+        <main class="mx-auto w-full max-w-md px-6 pt-12 pb-16 sm:pt-16 sm:pb-20">
+            <header class="mb-8 text-center">
+                <h1 class="text-3xl font-black tracking-tight text-slate-900">비밀번호 찾기</h1>
+                <p class="mt-2 text-sm leading-relaxed text-slate-500">가입한 이메일로 재설정 링크를 보내드립니다.</p>
+            </header>
+            <form id="forgot-form" class="rounded-2xl border border-slate-200 bg-white p-7 shadow-lg shadow-slate-900/5">
+                <label class="mb-1.5 block text-xs font-bold uppercase tracking-wider text-slate-400" for="email">이메일</label>
+                <input type="email" id="email" required autocomplete="email" placeholder="you@example.com" class="box-border block w-full rounded-xl border border-slate-200 bg-white px-4 py-3 text-sm text-slate-900 outline-none transition focus:border-blue-500 focus:ring-2 focus:ring-blue-500/15" />
+                <p id="status-msg" class="mt-4 hidden text-sm text-slate-500"></p>
+                <button type="submit" class="mt-6 block w-full cursor-pointer rounded-xl border-0 bg-blue-600 px-4 py-3.5 text-sm font-bold text-white transition hover:bg-blue-700">재설정 메일 보내기</button>
+            </form>
+            <p class="mt-6 text-center"><a href="/login.html" class="text-sm font-bold text-blue-600 hover:underline">로그인으로 돌아가기</a></p>
+        </main>
+        <script src="/script/api.js"></script>
+        <script>
+            document.getElementById('forgot-form').addEventListener('submit', async (event) => {
+                event.preventDefault();
+                const statusEl = document.getElementById('status-msg');
+                statusEl.classList.remove('hidden');
+                try {
+                    const result = await UaDeckApi.forgotPassword(document.getElementById('email').value);
+                    statusEl.textContent = result.message;
+                } catch (err) {
+                    statusEl.textContent = err.message;
+                }
+            });
+        </script>
+    </body>
+</html>
diff --git a/login.html b/login.html
index f4d1685..0c4bbf8 100644
--- a/login.html
+++ b/login.html
@@ -3,7 +3,7 @@
     <head>
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-        <link rel="stylesheet" href="./style/output.css?v=4.0.11" />
+        <link rel="stylesheet" href="./style/output.css?v=4.0.12" />
         <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&family=Noto+Sans+KR:wght@400;700;900&display=swap" rel="stylesheet" />
         <title>로그인 - UNIARE</title>
     </head>
@@ -44,12 +44,11 @@
                 <a href="/signup.html" class="font-bold text-blue-600 hover:underline" data-i18n="authSignup">회원가입</a>
             </p>
             <p class="mt-3 text-center text-xs leading-relaxed text-slate-400">
-                비밀번호를 잊으셨다면 가입한 이메일 주소를 적어
-                <a href="mailto:zenn@sori.studio" class="font-semibold text-slate-500 hover:underline">zenn@sori.studio</a>로 문의해 주세요.
+                <a href="/forgot-password.html" class="font-semibold text-slate-500 hover:underline">비밀번호를 잊으셨나요?</a>
             </p>
         </main>
 
-        <footer class="px-6 pb-5 text-center text-[0.625rem] font-medium tracking-wide text-slate-300" aria-hidden="true">v4.0.11</footer>
+        <footer class="px-6 pb-5 text-center text-[0.625rem] font-medium tracking-wide text-slate-300" aria-hidden="true">v4.0.12</footer>
 
         <script src="/script/page-i18n.js"></script>
         <script src="/script/api.js"></script>
diff --git a/nginx/Dockerfile b/nginx/Dockerfile
index 56890e5..f221976 100644
--- a/nginx/Dockerfile
+++ b/nginx/Dockerfile
@@ -3,7 +3,7 @@ FROM nginx:alpine
 COPY nginx/default.conf /etc/nginx/conf.d/default.conf
 
 # 정적 사이트 (docker-compose build context = 프로젝트 루트)
-COPY index.html cardList.html result.html login.html signup.html deckHistory.html preset.html profile.html admin.html favicon.ico /usr/share/nginx/html/
+COPY index.html cardList.html result.html login.html signup.html verify-email.html forgot-password.html reset-password.html deckHistory.html preset.html profile.html admin.html favicon.ico /usr/share/nginx/html/
 COPY script /usr/share/nginx/html/script
 COPY style /usr/share/nginx/html/style
 COPY i18n /usr/share/nginx/html/i18n
diff --git a/profile.html b/profile.html
index d9c7852..c6b5e3a 100644
--- a/profile.html
+++ b/profile.html
@@ -59,7 +59,8 @@
                 <div class="profile-body">
                     <div class="profile-field">
                         <label class="profile-label" for="profile-email" data-i18n="emailLabel">이메일</label>
-                        <input type="email" id="profile-email" class="profile-input" autocomplete="email" />
+                        <input type="email" id="profile-email" class="profile-input" autocomplete="email" readonly aria-readonly="true" />
+                        <p class="mt-1 text-xs text-slate-400">인증된 이메일 주소는 현재 직접 변경할 수 없습니다.</p>
                     </div>
                     <div class="profile-field">
                         <label class="profile-label" for="profile-username" data-i18n="usernameLabel">사용자명</label>
diff --git a/reset-password.html b/reset-password.html
new file mode 100644
index 0000000..f489b37
--- /dev/null
+++ b/reset-password.html
@@ -0,0 +1,55 @@
+<!doctype html>
+<html lang="ko">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <link rel="stylesheet" href="./style/output.css?v=4.0.12" />
+        <title>비밀번호 재설정 - UNIARE</title>
+    </head>
+    <body class="app-page">
+        <nav class="app-nav">
+            <div class="app-nav-inner">
+                <a href="/" class="app-brand"><img src="/images/assets/uniare-h48.png" alt="UNIARE" class="app-brand-logo" height="32" /></a>
+            </div>
+        </nav>
+        <main class="mx-auto w-full max-w-md px-6 pt-12 pb-16 sm:pt-16 sm:pb-20">
+            <header class="mb-8 text-center">
+                <h1 class="text-3xl font-black tracking-tight text-slate-900">비밀번호 재설정</h1>
+                <p class="mt-2 text-sm leading-relaxed text-slate-500">새로 사용할 비밀번호를 입력하세요.</p>
+            </header>
+            <form id="reset-form" class="rounded-2xl border border-slate-200 bg-white p-7 shadow-lg shadow-slate-900/5">
+                <div class="mb-5">
+                    <label class="mb-1.5 block text-xs font-bold uppercase tracking-wider text-slate-400" for="password">새 비밀번호</label>
+                    <input type="password" id="password" required minlength="8" autocomplete="new-password" placeholder="8자 이상" class="box-border block w-full rounded-xl border border-slate-200 bg-white px-4 py-3 text-sm text-slate-900 outline-none transition focus:border-blue-500 focus:ring-2 focus:ring-blue-500/15" />
+                </div>
+                <label class="mb-1.5 block text-xs font-bold uppercase tracking-wider text-slate-400" for="password-confirm">비밀번호 확인</label>
+                <input type="password" id="password-confirm" required minlength="8" autocomplete="new-password" class="box-border block w-full rounded-xl border border-slate-200 bg-white px-4 py-3 text-sm text-slate-900 outline-none transition focus:border-blue-500 focus:ring-2 focus:ring-blue-500/15" />
+                <p id="status-msg" class="mt-4 hidden text-sm text-slate-500"></p>
+                <button type="submit" class="mt-6 block w-full cursor-pointer rounded-xl border-0 bg-blue-600 px-4 py-3.5 text-sm font-bold text-white transition hover:bg-blue-700">비밀번호 변경</button>
+            </form>
+            <p class="mt-6 text-center"><a href="/login.html" class="text-sm font-bold text-blue-600 hover:underline">로그인으로 돌아가기</a></p>
+        </main>
+        <script src="/script/api.js"></script>
+        <script>
+            document.getElementById('reset-form').addEventListener('submit', async (event) => {
+                event.preventDefault();
+                const statusEl = document.getElementById('status-msg');
+                const password = document.getElementById('password').value;
+                const confirm = document.getElementById('password-confirm').value;
+                statusEl.classList.remove('hidden');
+                if (password !== confirm) {
+                    statusEl.textContent = '비밀번호가 일치하지 않습니다.';
+                    return;
+                }
+                try {
+                    const token = new URLSearchParams(location.search).get('token') || '';
+                    const result = await UaDeckApi.resetPassword(token, password);
+                    statusEl.textContent = result.message;
+                    document.querySelector('#reset-form button').disabled = true;
+                } catch (err) {
+                    statusEl.textContent = err.message;
+                }
+            });
+        </script>
+    </body>
+</html>
diff --git a/script/api.js b/script/api.js
index e449f47..c6e0cd8 100644
--- a/script/api.js
+++ b/script/api.js
@@ -147,6 +147,34 @@ const UaDeckApi = (() => {
         register: (body) =>
             request('/auth/register', { method: 'POST', body: JSON.stringify(body) }),
 
+        /** @param {string} email */
+        resendVerification: (email) =>
+            request('/auth/resend-verification', {
+                method: 'POST',
+                body: JSON.stringify({ email }),
+            }),
+
+        /** @param {string} token */
+        verifyEmail: (token) =>
+            request('/auth/verify-email', {
+                method: 'POST',
+                body: JSON.stringify({ token }),
+            }),
+
+        /** @param {string} email */
+        forgotPassword: (email) =>
+            request('/auth/forgot-password', {
+                method: 'POST',
+                body: JSON.stringify({ email }),
+            }),
+
+        /** @param {string} token @param {string} newPassword */
+        resetPassword: (token, newPassword) =>
+            request('/auth/reset-password', {
+                method: 'POST',
+                body: JSON.stringify({ token, newPassword }),
+            }),
+
         getMe: () => request('/auth/me'),
 
         /** @param {object} body */
diff --git a/signup.html b/signup.html
index 502e59e..ab58826 100644
--- a/signup.html
+++ b/signup.html
@@ -3,7 +3,7 @@
     <head>
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-        <link rel="stylesheet" href="./style/output.css?v=4.0.6" />
+        <link rel="stylesheet" href="./style/output.css?v=4.0.12" />
         <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&family=Noto+Sans+KR:wght@400;700;900&display=swap" rel="stylesheet" />
         <title>회원가입 - UNIARE</title>
     </head>
@@ -71,9 +71,8 @@
                         username: document.getElementById('username').value,
                         password,
                     };
-                    const { token, user } = await UaDeckApi.register(body);
-                    UaDeckApi.saveAuth(token, user);
-                    location.href = '/';
+                    const result = await UaDeckApi.register(body);
+                    location.href = `/verify-email.html?email=${encodeURIComponent(result.email)}`;
                 } catch (err) {
                     errEl.textContent = err.message;
                     errEl.classList.remove('hidden');
diff --git a/style/output.css b/style/output.css
index b2117c2..821886a 100644
--- a/style/output.css
+++ b/style/output.css
@@ -1,2 +1,2 @@
 /*! tailwindcss v4.1.18 | MIT License | https://tailwindcss.com */
-@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-translate-x:0;--tw-translate-y:0;--tw-translate-z:0;--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-space-y-reverse:0;--tw-border-style:solid;--tw-gradient-position:initial;--tw-gradient-from:#0000;--tw-gradient-via:#0000;--tw-gradient-to:#0000;--tw-gradient-stops:initial;--tw-gradient-via-stops:initial;--tw-gradient-from-position:0%;--tw-gradient-via-position:50%;--tw-gradient-to-position:100%;--tw-leading:initial;--tw-font-weight:initial;--tw-tracking:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-duration:initial;--tw-scale-x:1;--tw-scale-y:1;--tw-scale-z:1}}}@layer theme{:root,:host{--font-sans:ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--color-red-50:oklch(97.1% .013 17.38);--color-red-100:oklch(93.6% .032 17.717);--color-red-500:oklch(63.7% .237 25.331);--color-red-600:oklch(57.7% .245 27.325);--color-amber-600:oklch(66.6% .179 58.318);--color-yellow-50:oklch(98.7% .026 102.212);--color-yellow-100:oklch(97.3% .071 103.193);--color-yellow-600:oklch(68.1% .162 75.834);--color-green-50:oklch(98.2% .018 155.826);--color-green-100:oklch(96.2% .044 156.743);--color-green-500:oklch(72.3% .219 149.579);--color-emerald-50:oklch(97.9% .021 166.113);--color-emerald-600:oklch(59.6% .145 163.225);--color-blue-50:oklch(97% .014 254.604);--color-blue-100:oklch(93.2% .032 255.585);--color-blue-300:oklch(80.9% .105 251.813);--color-blue-400:oklch(70.7% .165 254.624);--color-blue-500:oklch(62.3% .214 259.815);--color-blue-600:oklch(54.6% .245 262.881);--color-blue-700:oklch(48.8% .243 264.376);--color-indigo-600:oklch(51.1% 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--tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-scale-x{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-y{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-z{syntax:"*";inherits:false;initial-value:1}@keyframes spin{to{transform:rotate(360deg)}}
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oklab,var(--color-slate-900)5%,transparent)var(--tw-shadow-alpha),transparent)}}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,)var(--tw-brightness,)var(--tw-contrast,)var(--tw-grayscale,)var(--tw-hue-rotate,)var(--tw-invert,)var(--tw-saturate,)var(--tw-sepia,)var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,)var(--tw-brightness,)var(--tw-contrast,)var(--tw-grayscale,)var(--tw-hue-rotate,)var(--tw-invert,)var(--tw-saturate,)var(--tw-sepia,)var(--tw-drop-shadow,)}.backdrop-blur-lg{--tw-backdrop-blur:blur(var(--blur-lg));-webkit-backdrop-filter:var(--tw-backdrop-blur,)var(--tw-backdrop-brightness,)var(--tw-backdrop-contrast,)var(--tw-backdrop-grayscale,)var(--tw-backdrop-hue-rotate,)var(--tw-backdrop-invert,)var(--tw-backdrop-opacity,)var(--tw-backdrop-saturate,)var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,)var(--tw-backdrop-brightness,)var(--tw-backdrop-contrast,)var(--tw-backdrop-grayscale,)var(--tw-backdrop-hue-rotate,)var(--tw-backdrop-invert,)var(--tw-backdrop-opacity,)var(--tw-backdrop-saturate,)var(--tw-backdrop-sepia,)}.backdrop-blur-md{--tw-backdrop-blur:blur(var(--blur-md));-webkit-backdrop-filter:var(--tw-backdrop-blur,)var(--tw-backdrop-brightness,)var(--tw-backdrop-contrast,)var(--tw-backdrop-grayscale,)var(--tw-backdrop-hue-rotate,)var(--tw-backdrop-invert,)var(--tw-backdrop-opacity,)var(--tw-backdrop-saturate,)var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,)var(--tw-backdrop-brightness,)var(--tw-backdrop-contrast,)var(--tw-backdrop-grayscale,)var(--tw-backdrop-hue-rotate,)var(--tw-backdrop-invert,)var(--tw-backdrop-opacity,)var(--tw-backdrop-saturate,)var(--tw-backdrop-sepia,)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur,)var(--tw-backdrop-brightness,)var(--tw-backdrop-contrast,)var(--tw-backdrop-grayscale,)var(--tw-backdrop-hue-rotate,)var(--tw-backdrop-invert,)var(--tw-backdrop-opacity,)var(--tw-backdrop-saturate,)var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,)var(--tw-backdrop-brightness,)var(--tw-backdrop-contrast,)var(--tw-backdrop-grayscale,)var(--tw-backdrop-hue-rotate,)var(--tw-backdrop-invert,)var(--tw-backdrop-opacity,)var(--tw-backdrop-saturate,)var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-all{transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-colors{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-opacity{transition-property:opacity;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-transform{transition-property:transform,translate,scale,rotate;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.duration-300{--tw-duration:.3s;transition-duration:.3s}.outline-none{--tw-outline-style:none;outline-style:none}.select-none{-webkit-user-select:none;user-select:none}@media (hover:hover){.group-hover\:translate-x-0:is(:where(.group):hover *){--tw-translate-x:calc(var(--spacing)*0);translate:var(--tw-translate-x)var(--tw-translate-y)}.group-hover\:text-blue-500:is(:where(.group):hover *){color:var(--color-blue-500)}.group-hover\:text-blue-600:is(:where(.group):hover *){color:var(--color-blue-600)}.group-hover\:opacity-100:is(:where(.group):hover *){opacity:1}}.placeholder\:text-slate-300::placeholder{color:var(--color-slate-300)}.last\:border-b-0:last-child{border-bottom-style:var(--tw-border-style);border-bottom-width:0}@media (hover:hover){.hover\:border-blue-300:hover{border-color:var(--color-blue-300)}.hover\:border-blue-400:hover{border-color:var(--color-blue-400)}.hover\:border-blue-500:hover{border-color:var(--color-blue-500)}.hover\:border-slate-200:hover{border-color:var(--color-slate-200)}.hover\:bg-blue-50:hover{background-color:var(--color-blue-50)}.hover\:bg-blue-700:hover{background-color:var(--color-blue-700)}.hover\:bg-gray-100:hover{background-color:var(--color-gray-100)}.hover\:bg-red-50:hover{background-color:var(--color-red-50)}.hover\:bg-red-100:hover{background-color:var(--color-red-100)}.hover\:bg-slate-50:hover{background-color:var(--color-slate-50)}.hover\:bg-slate-200:hover{background-color:var(--color-slate-200)}.hover\:bg-slate-300:hover{background-color:var(--color-slate-300)}.hover\:bg-slate-700:hover{background-color:var(--color-slate-700)}.hover\:text-blue-600:hover{color:var(--color-blue-600)}.hover\:text-slate-600:hover{color:var(--color-slate-600)}.hover\:text-slate-800:hover{color:var(--color-slate-800)}.hover\:underline:hover{text-decoration-line:underline}.hover\:shadow-xl:hover{--tw-shadow:0 20px 25px -5px var(--tw-shadow-color,#0000001a),0 8px 10px -6px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}}.focus\:border-blue-500:focus{border-color:var(--color-blue-500)}.focus\:bg-white:focus{background-color:var(--color-white)}.focus\:ring-2:focus{--tw-ring-shadow:var(--tw-ring-inset,)0 0 0 calc(2px + var(--tw-ring-offset-width))var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.focus\:ring-3:focus{--tw-ring-shadow:var(--tw-ring-inset,)0 0 0 calc(3px + var(--tw-ring-offset-width))var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.focus\:ring-blue-500:focus{--tw-ring-color:var(--color-blue-500)}.focus\:ring-blue-500\/15:focus{--tw-ring-color:#3080ff26}@supports (color:color-mix(in lab, red, red)){.focus\:ring-blue-500\/15:focus{--tw-ring-color:color-mix(in oklab,var(--color-blue-500)15%,transparent)}}.focus\:ring-blue-500\/20:focus{--tw-ring-color:#3080ff33}@supports (color:color-mix(in lab, red, red)){.focus\:ring-blue-500\/20:focus{--tw-ring-color:color-mix(in oklab,var(--color-blue-500)20%,transparent)}}.active\:scale-95:active{--tw-scale-x:95%;--tw-scale-y:95%;--tw-scale-z:95%;scale:var(--tw-scale-x)var(--tw-scale-y)}.active\:scale-\[0\.98\]:active{scale:.98}.disabled\:cursor-not-allowed:disabled{cursor:not-allowed}.disabled\:bg-slate-50:disabled{background-color:var(--color-slate-50)}.disabled\:bg-slate-300:disabled{background-color:var(--color-slate-300)}.disabled\:text-slate-400:disabled{color:var(--color-slate-400)}@media (min-width:40rem){.sm\:block{display:block}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.sm\:flex-row{flex-direction:row}.sm\:items-center{align-items:center}.sm\:justify-between{justify-content:space-between}.sm\:gap-4{gap:calc(var(--spacing)*4)}.sm\:p-4{padding:calc(var(--spacing)*4)}.sm\:p-12{padding:calc(var(--spacing)*12)}.sm\:px-6{padding-inline:calc(var(--spacing)*6)}.sm\:pt-16{padding-top:calc(var(--spacing)*16)}.sm\:pb-20{padding-bottom:calc(var(--spacing)*20)}.sm\:text-5xl{font-size:var(--text-5xl);line-height:var(--tw-leading,var(--text-5xl--line-height))}.sm\:text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}}@media (min-width:48rem){.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.md\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}}@media (min-width:64rem){.lg\:sticky{position:sticky}.lg\:top-20{top:calc(var(--spacing)*20)}.lg\:h-8{height:calc(var(--spacing)*8)}.lg\:h-fit{height:fit-content}.lg\:w-56{width:calc(var(--spacing)*56)}.lg\:w-64{width:calc(var(--spacing)*64)}.lg\:w-80{width:calc(var(--spacing)*80)}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}.lg\:flex-col{flex-direction:column}.lg\:flex-row{flex-direction:row}.lg\:border-t{border-top-style:var(--tw-border-style);border-top-width:1px}.lg\:pt-4{padding-top:calc(var(--spacing)*4)}.lg\:pb-4{padding-bottom:calc(var(--spacing)*4)}.lg\:text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.lg\:text-\[9px\]{font-size:9px}.lg\:text-\[10px\]{font-size:10px}}@media (min-width:80rem){.xl\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}}:root{--brand-logo-height:2rem}.app-brand,.auth-brand,.admin-brand{flex-shrink:0;align-items:center;line-height:0;text-decoration:none;display:inline-flex}.app-brand-logo{height:var(--brand-logo-height);width:auto;max-height:var(--brand-logo-height);object-fit:contain;display:block}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-scale-x{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-y{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-z{syntax:"*";inherits:false;initial-value:1}@keyframes spin{to{transform:rotate(360deg)}}
\ No newline at end of file
diff --git a/verify-email.html b/verify-email.html
new file mode 100644
index 0000000..060a273
--- /dev/null
+++ b/verify-email.html
@@ -0,0 +1,67 @@
+<!doctype html>
+<html lang="ko">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <link rel="stylesheet" href="./style/output.css?v=4.0.12" />
+        <title>이메일 인증 - UNIARE</title>
+    </head>
+    <body class="app-page">
+        <nav class="app-nav">
+            <div class="app-nav-inner">
+                <a href="/" class="app-brand">
+                    <img src="/images/assets/uniare-h48.png" alt="UNIARE" class="app-brand-logo" height="32" />
+                </a>
+            </div>
+        </nav>
+        <main class="mx-auto w-full max-w-md px-6 pt-12 pb-16 sm:pt-16 sm:pb-20">
+            <section class="rounded-2xl border border-slate-200 bg-white p-7 text-center shadow-lg shadow-slate-900/5">
+                <h1 class="text-2xl font-black tracking-tight text-slate-900">이메일 인증</h1>
+                <p id="status-msg" class="mt-3 text-sm leading-relaxed text-slate-500">가입한 이메일로 인증 링크를 보냈습니다.</p>
+                <form id="resend-form" class="mt-6">
+                    <label class="mb-1.5 block text-left text-xs font-bold uppercase tracking-wider text-slate-400" for="email">이메일</label>
+                    <input type="email" id="email" required autocomplete="email" class="box-border block w-full rounded-xl border border-slate-200 bg-white px-4 py-3 text-sm text-slate-900 outline-none transition focus:border-blue-500 focus:ring-2 focus:ring-blue-500/15" />
+                    <button type="submit" class="mt-4 block w-full cursor-pointer rounded-xl border-0 bg-slate-100 px-4 py-3 text-sm font-bold text-slate-700 transition hover:bg-slate-200">인증 메일 다시 보내기</button>
+                </form>
+                <a href="/login.html" class="mt-5 inline-block text-sm font-bold text-blue-600 hover:underline">로그인으로 이동</a>
+            </section>
+        </main>
+        <script src="/script/api.js"></script>
+        <script>
+            const params = new URLSearchParams(location.search);
+            const token = params.get('token');
+            const email = params.get('email') || '';
+            const statusEl = document.getElementById('status-msg');
+            const emailEl = document.getElementById('email');
+            emailEl.value = email;
+
+            /**
+             * 이메일 인증 토큰 처리
+             * @returns {Promise<void>}
+             */
+            async function verifyToken() {
+                if (!token) return;
+                document.getElementById('resend-form').classList.add('hidden');
+                statusEl.textContent = '이메일을 인증하는 중입니다...';
+                try {
+                    const result = await UaDeckApi.verifyEmail(token);
+                    statusEl.textContent = result.message;
+                } catch (err) {
+                    statusEl.textContent = err.message;
+                    document.getElementById('resend-form').classList.remove('hidden');
+                }
+            }
+
+            document.getElementById('resend-form').addEventListener('submit', async (event) => {
+                event.preventDefault();
+                try {
+                    const result = await UaDeckApi.resendVerification(emailEl.value);
+                    statusEl.textContent = result.message;
+                } catch (err) {
+                    statusEl.textContent = err.message;
+                }
+            });
+            verifyToken();
+        </script>
+    </body>
+</html>