diff --git a/app/__init__.py b/app/__init__.py
index 86ba90c..cc0de6d 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -1,9 +1,48 @@
-from flask import Flask
+from flask import Flask, render_template
+from flask_sqlalchemy import SQLAlchemy
+from flask_login import LoginManager
+from .config import Config
 
-def create_app():
+db = SQLAlchemy()
+login_manager = LoginManager()
+
+@login_manager.user_loader
+def load_user(id):
+    from app.models.user import User
+    return User.query.get(int(id))
+
+def create_app(config_class=Config):
     app = Flask(__name__)
+    app.config.from_object(config_class)
 
+    # 初始化擴展
+    db.init_app(app)
+    login_manager.init_app(app)
+    login_manager.login_view = 'auth.login'  # 設置登入頁面的端點
+    login_manager.login_message = '請先登入後再訪問此頁面'  # 自定義提示訊息
+    login_manager.login_message_category = 'warning'  # 設置提示訊息的類別
+
+    # 註冊藍圖
     from app.routes.main import main_bp
+    from app.routes.settings import settings_bp
+    from app.routes.auth import auth_bp
+
     app.register_blueprint(main_bp)
+    app.register_blueprint(settings_bp)
+    app.register_blueprint(auth_bp)
+
+    # 確保錯誤處理模板存在
+    @app.errorhandler(404)
+    def not_found_error(error):
+        return render_template('errors/404.html'), 404
+
+    @app.errorhandler(500)
+    def internal_error(error):
+        db.session.rollback()
+        return render_template('errors/500.html'), 500
+
+    # 創建所有數據表
+    with app.app_context():
+        db.create_all()
 
     return app
diff --git a/app/config.py b/app/config.py
new file mode 100644
index 0000000..b395ab1
--- /dev/null
+++ b/app/config.py
@@ -0,0 +1,19 @@
+import os
+try:
+    from dotenv import load_dotenv
+    load_dotenv()
+except ImportError:
+    pass
+
+class Config:
+    SECRET_KEY = os.environ.get('SECRET_KEY') or 'default-secret-key'
+    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
+        'sqlite:///app.db'
+    SQLALCHEMY_TRACK_MODIFICATIONS = False
+
+    # 其他配置項
+    MAIL_SERVER = os.environ.get('MAIL_SERVER')
+    MAIL_PORT = int(os.environ.get('MAIL_PORT') or 25)
+    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS') is not None
+    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
+    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
diff --git a/app/models/user.py b/app/models/user.py
new file mode 100644
index 0000000..21bb776
--- /dev/null
+++ b/app/models/user.py
@@ -0,0 +1,27 @@
+from app import db, login_manager
+from flask_login import UserMixin
+from werkzeug.security import generate_password_hash, check_password_hash
+from datetime import datetime
+
+@login_manager.user_loader
+def load_user(id):
+    return User.query.get(int(id))
+
+class User(UserMixin, db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String(64), unique=True, index=True, nullable=False)
+    email = db.Column(db.String(120), unique=True, index=True, nullable=False)
+    password_hash = db.Column(db.String(128))
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    last_login = db.Column(db.DateTime, default=datetime.utcnow)  # 新增此欄位
+    is_active = db.Column(db.Boolean, default=True)
+    is_admin = db.Column(db.Boolean, default=False)
+
+    def set_password(self, password):
+        self.password_hash = generate_password_hash(password)
+
+    def check_password(self, password):
+        return check_password_hash(self.password_hash, password)
+
+    def __repr__(self):
+        return f'<User {self.username}>'
diff --git a/app/routes/__init__.py b/app/routes/__init__.py
index aff47a9..e69de29 100644
--- a/app/routes/__init__.py
+++ b/app/routes/__init__.py
@@ -1,5 +0,0 @@
-from flask import Blueprint
-
-main_bp = Blueprint('main', __name__)
-
-from app.routes import main
diff --git a/app/routes/api.py b/app/routes/api.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/routes/auth.py b/app/routes/auth.py
new file mode 100644
index 0000000..dab5fcd
--- /dev/null
+++ b/app/routes/auth.py
@@ -0,0 +1,127 @@
+from flask import Blueprint, render_template, redirect, url_for, flash, request
+from flask_login import login_user, logout_user, login_required, current_user
+from app.models.user import User
+from app import db
+from urllib.parse import urlparse
+from datetime import datetime
+
+auth_bp = Blueprint('auth', __name__)
+
+@auth_bp.route('/login', methods=['GET', 'POST'])
+def login():
+    if current_user.is_authenticated:
+        return redirect(url_for('main.index'))
+
+    if request.method == 'POST':
+        email = request.form.get('email')
+        password = request.form.get('password')
+        remember = request.form.get('remember', False)
+
+        user = User.query.filter_by(email=email).first()
+        if user is None or not user.check_password(password):
+            flash('電子郵件或密碼錯誤', 'danger')
+            return redirect(url_for('auth.login'))
+
+        # 更新最後登入時間
+        user.last_login = datetime.utcnow()
+        db.session.commit()
+
+        login_user(user, remember=remember)
+        next_page = request.args.get('next')
+        if not next_page or urlparse(next_page).netloc != '':
+            next_page = url_for('main.index')
+        flash('登入成功！', 'success')
+        return redirect(next_page)
+
+    return render_template('auth/login.html', title='登入')
+
+
+@auth_bp.route('/register', methods=['GET', 'POST'])
+def register():
+    if current_user.is_authenticated:
+        return redirect(url_for('main.index'))
+
+    if request.method == 'POST':
+        email = request.form.get('email')
+        username = request.form.get('username')
+        password = request.form.get('password')
+        confirm_password = request.form.get('confirm_password')
+
+        if password != confirm_password:
+            flash('密碼不一致', 'danger')
+            return redirect(url_for('auth.register'))
+
+        if User.query.filter_by(email=email).first():
+            flash('此電子郵件已被註冊', 'danger')
+            return redirect(url_for('auth.register'))
+
+        if User.query.filter_by(username=username).first():
+            flash('此用戶名已被使用', 'danger')
+            return redirect(url_for('auth.register'))
+
+        user = User(email=email, username=username)
+        user.set_password(password)
+        db.session.add(user)
+        db.session.commit()
+
+        flash('註冊成功！請登入。', 'success')
+        return redirect(url_for('auth.login'))
+
+    return render_template('auth/register.html', title='註冊')
+
+
+@auth_bp.route('/logout')
+@login_required
+def logout():
+    logout_user()
+    flash('已登出', 'info')
+    return redirect(url_for('main.index'))
+
+
+@auth_bp.route('/profile', methods=['GET', 'POST'])
+@login_required
+def profile():
+    if request.method == 'POST':
+        action = request.form.get('action')
+
+        if action == 'update_profile':
+            # 檢查用戶名是否已存在
+            if (request.form.get('username') != current_user.username and
+                    User.query.filter_by(username=request.form.get('username')).first()):
+                flash('此用戶名已被使用', 'danger')
+                return redirect(url_for('auth.profile'))
+
+            # 檢查郵箱是否已存在
+            if (request.form.get('email') != current_user.email and
+                    User.query.filter_by(email=request.form.get('email')).first()):
+                flash('此電子郵件已被註冊', 'danger')
+                return redirect(url_for('auth.profile'))
+
+            try:
+                current_user.username = request.form.get('username')
+                current_user.email = request.form.get('email')
+                db.session.commit()
+                flash('個人資料已更新', 'success')
+            except Exception as e:
+                db.session.rollback()
+                flash('更新失敗', 'danger')
+
+            return redirect(url_for('auth.profile'))
+
+        elif action == 'update_password':
+            if not current_user.check_password(request.form.get('current_password')):
+                flash('目前密碼不正確', 'danger')
+            elif request.form.get('new_password') != request.form.get('confirm_password'):
+                flash('新密碼與確認密碼不符', 'danger')
+            else:
+                try:
+                    current_user.set_password(request.form.get('new_password'))
+                    db.session.commit()
+                    flash('密碼已更新', 'success')
+                except Exception as e:
+                    db.session.rollback()
+                    flash('更新失敗', 'danger')
+
+            return redirect(url_for('auth.profile'))
+
+    return render_template('auth/profile.html', title='個人資料')
diff --git a/app/routes/main.py b/app/routes/main.py
index a756b71..08a7a37 100644
--- a/app/routes/main.py
+++ b/app/routes/main.py
@@ -1,7 +1,11 @@
 from flask import render_template, Blueprint
 
-main_bp = Blueprint('main', __name__)
+main_bp = Blueprint('main', __name__, url_prefix='/')
 
 @main_bp.route('/')
 def index():
     return render_template('main/index.html', title='首頁')
+
+@main_bp.route('/about')
+def about():
+    return render_template('main/about.html', title='關於我們')
diff --git a/app/routes/settings.py b/app/routes/settings.py
new file mode 100644
index 0000000..fac629e
--- /dev/null
+++ b/app/routes/settings.py
@@ -0,0 +1,76 @@
+from flask import render_template, Blueprint, flash, redirect, url_for, request
+from flask_login import login_required, current_user
+from app import db
+from app.models.user import User
+from datetime import datetime, timedelta
+
+settings_bp = Blueprint('settings', __name__, url_prefix='/settings')
+
+def get_system_stats():
+    """獲取系統統計數據"""
+    try:
+        # 獲取總用戶數
+        total_users = User.query.count()
+
+        # 獲取活躍用戶數（最近30天內有登入的用戶）
+        thirty_days_ago = datetime.utcnow() - timedelta(days=30)
+        active_users = User.query.filter(User.last_login >= thirty_days_ago).count()
+
+        return {
+            'total_users': total_users,
+            'active_users': active_users,
+            'system_version': '1.0.0',
+            'last_update': '2024-10-27'
+        }
+    except Exception as e:
+        # 如果發生錯誤，返回預設值
+        return {
+            'total_users': 0,
+            'active_users': 0,
+            'system_version': '1.0.0',
+            'last_update': '2024-10-27'
+        }
+
+@settings_bp.route('/')
+@login_required
+def index():
+    if request.method == 'POST':
+        action = request.form.get('action')
+
+        if action == 'update_profile':
+            try:
+                current_user.username = request.form.get('username', current_user.username)
+                current_user.email = request.form.get('email', current_user.email)
+                db.session.commit()
+                flash('個人資料已更新', 'success')
+            except Exception as e:
+                db.session.rollback()
+                flash(f'更新失敗: {str(e)}', 'danger')
+
+        elif action == 'update_password':
+            current_password = request.form.get('current_password')
+            new_password = request.form.get('new_password')
+            confirm_password = request.form.get('confirm_password')
+
+            if not current_user.check_password(current_password):
+                flash('目前密碼不正確', 'danger')
+            elif new_password != confirm_password:
+                flash('新密碼與確認密碼不符', 'danger')
+            else:
+                try:
+                    current_user.set_password(new_password)
+                    db.session.commit()
+                    flash('密碼已更新', 'success')
+                except Exception as e:
+                    db.session.rollback()
+                    flash(f'更新失敗: {str(e)}', 'danger')
+
+        return redirect(url_for('settings.index'))
+
+    # 獲取系統統計數據
+    stats = get_system_stats()
+
+    return render_template('pages/settings.html',
+                           title='設定',
+                           stats=stats,
+                           )
diff --git a/app/templates/auth/login.html b/app/templates/auth/login.html
new file mode 100644
index 0000000..ff5b8f2
--- /dev/null
+++ b/app/templates/auth/login.html
@@ -0,0 +1,32 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="row justify-content-center">
+    <div class="col-md-6">
+        <div class="card shadow">
+            <div class="card-header">
+                <h4 class="mb-0">登入</h4>
+            </div>
+            <div class="card-body">
+                <form method="POST" action="{{ url_for('auth.login') }}">
+                    <div class="mb-3">
+                        <label for="email" class="form-label">電子郵件</label>
+                        <input type="email" class="form-control" id="email" name="email" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="password" class="form-label">密碼</label>
+                        <input type="password" class="form-control" id="password" name="password" required>
+                    </div>
+                    <div class="mb-3 form-check">
+                        <input type="checkbox" class="form-check-input" id="remember" name="remember">
+                        <label class="form-check-label" for="remember">記住我</label>
+                    </div>
+                    <button type="submit" class="btn btn-primary">登入</button>
+                </form>
+                <hr>
+                <p>還沒有帳號？ <a href="{{ url_for('auth.register') }}">立即註冊</a></p>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}
diff --git a/app/templates/auth/profile.html b/app/templates/auth/profile.html
new file mode 100644
index 0000000..dee6349
--- /dev/null
+++ b/app/templates/auth/profile.html
@@ -0,0 +1,102 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="container py-4">
+    <div class="row justify-content-center">
+        <div class="col-md-8">
+            <!-- 個人資料卡片 -->
+            <div class="card shadow-sm mb-4">
+                <div class="card-header bg-primary text-white">
+                    <h5 class="card-title mb-0">個人資料</h5>
+                </div>
+                <div class="card-body">
+                    <form method="POST" action="{{ url_for('auth.profile') }}">
+                        <input type="hidden" name="action" value="update_profile">
+                        
+                        <div class="row mb-4">
+                            <div class="col-auto">
+                                <div class="avatar-circle bg-primary text-white d-flex align-items-center justify-content-center" 
+                                     style="width: 100px; height: 100px; border-radius: 50%; font-size: 2.5rem;">
+                                    {{ current_user.username[0].upper() }}
+                                </div>
+                            </div>
+                            <div class="col">
+                                <h5 class="mb-1">{{ current_user.username }}</h5>
+                                <p class="text-muted mb-0">{{ current_user.email }}</p>
+                                <small class="text-muted">加入時間：{{ current_user.created_at.strftime('%Y-%m-%d') }}</small>
+                            </div>
+                        </div>
+
+                        <div class="mb-3">
+                            <label class="form-label">用戶名</label>
+                            <input type="text" class="form-control" name="username" 
+                                   value="{{ current_user.username }}" required>
+                            <div class="form-text">用戶名將顯示在您的個人檔案中</div>
+                        </div>
+
+                        <div class="mb-3">
+                            <label class="form-label">電子郵件</label>
+                            <input type="email" class="form-control" name="email" 
+                                   value="{{ current_user.email }}" required>
+                            <div class="form-text">用於接收通知和重要更新</div>
+                        </div>
+
+                        <button type="submit" class="btn btn-primary">
+                            <i class="bi bi-save"></i> 保存變更
+                        </button>
+                    </form>
+                </div>
+            </div>
+
+            <!-- 密碼修改卡片 -->
+            <div class="card shadow-sm">
+                <div class="card-header bg-primary text-white">
+                    <h5 class="card-title mb-0">修改密碼</h5>
+                </div>
+                <div class="card-body">
+                    <form method="POST" action="{{ url_for('auth.profile') }}">
+                        <input type="hidden" name="action" value="update_password">
+                        
+                        <div class="mb-3">
+                            <label class="form-label">目前密碼</label>
+                            <input type="password" class="form-control" name="current_password" required>
+                        </div>
+
+                        <div class="mb-3">
+                            <label class="form-label">新密碼</label>
+                            <input type="password" class="form-control" name="new_password" required>
+                            <div class="form-text">密碼必須包含至少8個字元</div>
+                        </div>
+
+                        <div class="mb-3">
+                            <label class="form-label">確認新密碼</label>
+                            <input type="password" class="form-control" name="confirm_password" required>
+                        </div>
+
+                        <button type="submit" class="btn btn-primary">
+                            <i class="bi bi-key"></i> 更新密碼
+                        </button>
+                    </form>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}
+
+{% block scripts %}
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    // 如果有 Flash 消息，自動隱藏
+    var alerts = document.querySelectorAll('.alert');
+    alerts.forEach(function(alert) {
+        setTimeout(function() {
+            alert.classList.add('fade');
+            setTimeout(function() {
+                alert.remove();
+            }, 150);
+        }, 3000);
+    });
+});
+</script>
+{% endblock %}
diff --git a/app/templates/auth/register.html b/app/templates/auth/register.html
new file mode 100644
index 0000000..b6c0541
--- /dev/null
+++ b/app/templates/auth/register.html
@@ -0,0 +1,36 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="row justify-content-center">
+    <div class="col-md-6">
+        <div class="card shadow">
+            <div class="card-header">
+                <h4 class="mb-0">註冊</h4>
+            </div>
+            <div class="card-body">
+                <form method="POST" action="{{ url_for('auth.register') }}">
+                    <div class="mb-3">
+                        <label for="email" class="form-label">電子郵件</label>
+                        <input type="email" class="form-control" id="email" name="email" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="username" class="form-label">用戶名</label>
+                        <input type="text" class="form-control" id="username" name="username" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="password" class="form-label">密碼</label>
+                        <input type="password" class="form-control" id="password" name="password" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="confirm_password" class="form-label">確認密碼</label>
+                        <input type="password" class="form-control" id="confirm_password" name="confirm_password" required>
+                    </div>
+                    <button type="submit" class="btn btn-primary">註冊</button>
+                </form>
+                <hr>
+                <p>已有帳號？ <a href="{{ url_for('auth.login') }}">登入</a></p>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}
diff --git a/app/templates/base.html b/app/templates/base.html
index bbe5dcd..2fafe86 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -16,9 +16,19 @@
 <body>
     {% include 'components/navbar.html' %}
 
-    <main class="container py-4">
+    <div class="container py-4" role="main">
+        {% with messages = get_flashed_messages(with_categories=true) %}
+            {% if messages %}
+                {% for category, message in messages %}
+                    <div class="alert alert-{{ category }}">
+                        {{ message }}
+                    </div>
+                {% endfor %}
+            {% endif %}
+        {% endwith %}
+
         {% block content %}{% endblock %}
-    </main>
+    </div>
 
     {% include 'components/footer.html' %}
 
diff --git a/app/templates/components/navbar.html b/app/templates/components/navbar.html
index 518d32b..86e20b5 100644
--- a/app/templates/components/navbar.html
+++ b/app/templates/components/navbar.html
@@ -18,6 +18,58 @@
                        首頁
                     </a>
                 </li>
+                <li class="nav-item">
+                    <a class="nav-link px-3 {% if request.endpoint == 'main.about' %}fw-medium text-primary{% endif %}"
+                       href="{{ url_for('main.about') }}">
+                       關於我們
+                    </a>
+                </li>
+            </ul>
+
+            <ul class="navbar-nav ms-auto">
+                {% if current_user.is_authenticated %}
+                <li class="nav-item dropdown">
+                    <a class="nav-link px-3 dropdown-toggle" href="#"
+                       id="navbarDropdown" role="button"
+                       data-bs-toggle="dropdown" aria-expanded="false">
+                        <i class="bi bi-person-circle"></i>
+                        {{ current_user.username }}
+                    </a>
+                    <ul class="dropdown-menu dropdown-menu-end shadow-sm border-0">
+                        <li>
+                            <a class="dropdown-item {% if request.endpoint == 'auth.profile' %}fw-medium text-primary{% endif %}"
+                               href="{{ url_for('auth.profile') }}">
+                                <i class="bi bi-person me-2"></i>個人資料
+                            </a>
+                        </li>
+                        <li>
+                            <a class="dropdown-item {% if request.endpoint == 'settings.index' %}fw-medium text-primary{% endif %}"
+                               href="{{ url_for('settings.index') }}">
+                                <i class="bi bi-gear me-2"></i>設定
+                            </a>
+                        </li>
+                        <li><hr class="dropdown-divider"></li>
+                        <li>
+                            <a class="dropdown-item text-danger" href="{{ url_for('auth.logout') }}">
+                                <i class="bi bi-box-arrow-right me-2"></i>登出
+                            </a>
+                        </li>
+                    </ul>
+                </li>
+                {% else %}
+                <li class="nav-item">
+                    <a class="nav-link px-3 {% if request.endpoint == 'auth.login' %}fw-medium text-primary{% endif %}"
+                       href="{{ url_for('auth.login') }}">
+                        <i class="bi bi-box-arrow-in-right"></i> 登入
+                    </a>
+                </li>
+                <li class="nav-item">
+                    <a class="nav-link px-3 {% if request.endpoint == 'auth.register' %}fw-medium text-primary{% endif %}"
+                       href="{{ url_for('auth.register') }}">
+                        <i class="bi bi-person-plus"></i> 註冊
+                    </a>
+                </li>
+                {% endif %}
             </ul>
         </div>
     </div>
diff --git a/app/templates/errors/404.html b/app/templates/errors/404.html
new file mode 100644
index 0000000..16845ca
--- /dev/null
+++ b/app/templates/errors/404.html
@@ -0,0 +1,7 @@
+{% extends "base.html" %}
+
+{% block content %}
+    <h1>找不到頁面</h1>
+    <p>請檢查網址是否正確</p>
+    <p><a href="{{ url_for('main.index') }}">返回首頁</a></p>
+{% endblock %}
diff --git a/app/templates/errors/500.html b/app/templates/errors/500.html
new file mode 100644
index 0000000..403496a
--- /dev/null
+++ b/app/templates/errors/500.html
@@ -0,0 +1,7 @@
+{% extends "base.html" %}
+
+{% block content %}
+    <h1>發生錯誤</h1>
+    <p>抱歉，發生了一些問題。請稍後再試。</p>
+    <p><a href="{{ url_for('main.index') }}">返回首頁</a></p>
+{% endblock %}
diff --git a/app/templates/main/about.html b/app/templates/main/about.html
new file mode 100644
index 0000000..b1db28f
--- /dev/null
+++ b/app/templates/main/about.html
@@ -0,0 +1,29 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="container py-4">
+    <div class="card shadow-sm">
+        <div class="card-body">
+            <h1 class="card-title mb-4">關於我們</h1>
+
+            <div class="row">
+                <div class="col-md-8">
+                    <h5 class="mb-3">我們的故事</h5>
+                    <p>在這裡寫入關於網站或團隊的介紹...</p>
+
+                    <h5 class="mb-3 mt-4">我們的使命</h5>
+                    <p>在這裡寫入網站的目標和使命...</p>
+
+                    <h5 class="mb-3 mt-4">聯絡我們</h5>
+                    <p>如果您有任何問題，歡迎聯繫我們：</p>
+                    <ul>
+                        <li>Email: example@example.com</li>
+                        <li>電話: (02) 1234-5678</li>
+                        <li>地址: 台灣台北市...</li>
+                    </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}
diff --git a/app/templates/main/index.html b/app/templates/main/index.html
index 3c69e80..c1139c3 100644
--- a/app/templates/main/index.html
+++ b/app/templates/main/index.html
@@ -1,5 +1,7 @@
 {% extends "base.html" %}
 
 {% block content %}
-
+{% if current_user.is_authenticated %}
+<h1>你好! {{ current_user.username }}</h1>
+{% endif %}
 {% endblock %}
diff --git a/app/templates/pages/settings.html b/app/templates/pages/settings.html
new file mode 100644
index 0000000..c51bf8a
--- /dev/null
+++ b/app/templates/pages/settings.html
@@ -0,0 +1,73 @@
+{% extends "base.html" %}
+{% block content %}
+<div class="row justify-content-center">
+    <!-- 左側導航 -->
+    <div class="col-md-3">
+        <div class="card shadow-sm mb-4">
+            <div class="list-group list-group-flush">
+                <button class="list-group-item list-group-item-action active"
+                        data-bs-toggle="list"
+                        href="#overview">
+                    <i class="bi bi-grid-1x2"></i> 總覽
+                </button>
+            </div>
+        </div>
+    </div>
+
+    <!-- 右側內容 -->
+    <div class="col-md-7">
+        <div class="tab-content">
+            <!-- 總覽面板 -->
+            <div class="tab-pane fade show active" id="overview">
+                <div class="card shadow-sm mb-4">
+                    <div class="card-header bg-primary text-white">
+                        <h5 class="card-title mb-0">系統總覽</h5>
+                    </div>
+                    <div class="card-body">
+                        <div class="row g-4">
+                            <div class="col-sm-6">
+                                <div class="border rounded p-3 text-center">
+                                    <h3 class="mb-0">{{ stats.total_users }}</h3>
+                                    <small>總用戶數</small>
+                                </div>
+                            </div>
+                            <div class="col-sm-6">
+                                <div class="border rounded p-3 text-center">
+                                    <h3 class="mb-0">{{ stats.active_users }}</h3>
+                                    <small>活躍用戶</small>
+                                </div>
+                            </div>
+                        </div>
+
+                        <div class="mt-4">
+                            <h6 class="fw-bold">系統資訊</h6>
+                            <table class="table table-bordered">
+                                <tr>
+                                    <td class="w-25">版本</td>
+                                    <td>{{ stats.system_version }}</td>
+                                </tr>
+                                <tr>
+                                    <td>最後更新</td>
+                                    <td>{{ stats.last_update }}</td>
+                                </tr>
+                            </table>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}
+
+{% block scripts %}
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    // 初始化 Bootstrap 的 tab 功能
+    var triggerTabList = [].slice.call(document.querySelectorAll('[data-bs-toggle="list"]'));
+    triggerTabList.forEach(function(triggerEl) {
+        new bootstrap.Tab(triggerEl);
+    });
+});
+</script>
+{% endblock %}
diff --git a/requirements.txt b/requirements.txt
index edeab81..b3a82ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,4 @@
+Flask-Login~=0.6.3
+Werkzeug~=3.0.6
 Flask~=3.0.3
+python-dotenv~=1.0.1