feat: 前端页面使用网站基础配置

- 使用 Flask context_processor 自动注入 site_config
- 所有页面标题使用 site_name 配置
- 所有页面导航栏品牌使用 site_name 配置
- 所有页面底部使用 site_footer 配置
- 文件上传时使用 max_file_size 配置验证文件大小
- 显示最大文件限制提示

admin.py

@@ -313,35 +313,56 @@ def clear_cache():
 @admin_required
 def settings():
     """系统配置"""
-    if request.method == 'POST':
-        data = request.json if request.is_json else request.form
-        
-        for key, value in data.items():
-            SystemConfig.set(key, value)
-        
-        if request.is_json:
-            return jsonify({'success': True})
-        flash('配置已保存', 'success')
-    
-    # 获取所有配置
-    configs = SystemConfig.query.all()
-    config_dict = {c.key: c.value for c in configs}
-    
-    # 获取动态配置
-    dynamic_configs = DynamicConfig.query.all()
-    
     # 获取LLM动态配置
     llm_config = get_llm_config()
     
+    # 获取网站基础配置
+    site_config = {
+        'site_name': DynamicConfig.get('site_name', 'PDF翻译助手'),
+        'site_footer': DynamicConfig.get('site_footer', '© 2026 PDF翻译助手'),
+        'max_file_size': DynamicConfig.get('max_file_size', 50),
+        'cache_expire_days': DynamicConfig.get('cache_expire_days', 30),
+        'enable_email_notify': DynamicConfig.get('enable_email_notify', True),
+        'enable_cache': DynamicConfig.get('enable_cache', True),
+        'enable_guest': DynamicConfig.get('enable_guest', True),
+        'default_source_lang': DynamicConfig.get('default_source_lang', 'en'),
+        'default_target_lang': DynamicConfig.get('default_target_lang', 'zh'),
+    }
+    
     return render_template('admin/settings.html',
-        configs=config_dict,
-        dynamic_configs=dynamic_configs,
-        user_limits=USER_LIMITS,
-        membership_plans=MEMBERSHIP_PLANS,
-        llm_config=llm_config
+        llm_config=llm_config,
+        site_config=site_config
     )
 
 
+@admin_bp.route('/settings/site', methods=['POST'])
+@admin_required
+def save_site_settings():
+    """保存网站基础配置"""
+    data = request.json
+    
+    # 保存每个配置项
+    for key, value in data.items():
+        if key in ['max_file_size', 'cache_expire_days']:
+            DynamicConfig.set(f'site_{key}', int(value), category='site', value_type='int', user_id=session.get('user_id'))
+        elif key in ['enable_email_notify', 'enable_cache', 'enable_guest']:
+            DynamicConfig.set(f'site_{key}', bool(value), category='site', value_type='bool', user_id=session.get('user_id'))
+        else:
+            DynamicConfig.set(f'site_{key}', value, category='site', user_id=session.get('user_id'))
+    
+    # 记录日志
+    log = OperationLog(
+        user_id=session.get('user_id'),
+        username='admin',
+        action='save_site_settings',
+        detail='保存网站基础配置'
+    )
+    db.session.add(log)
+    db.session.commit()
+    
+    return jsonify({'success': True})
+
+
 # ==================== 用户权限配置 ====================
 @admin_bp.route('/settings/user-limits', methods=['GET', 'POST'])
 @admin_required
@@ -674,22 +695,15 @@ def api_user_add_package(user_id):
 @admin_required
 def llm_config():
     """LLM配置页面"""
-    from config import LLM_CONFIG
+    # 获取所有大模型配置
+    llm_configs = BackupLLMConfig.query.order_by(BackupLLMConfig.sort_order).all()
     
-    # 从数据库获取配置，如果没有则使用默认值
-    config = {
-        'api_base': DynamicConfig.get('llm_api_base', LLM_CONFIG.get('api_base')),
-        'api_key': DynamicConfig.get('llm_api_key', LLM_CONFIG.get('api_key')),
-        'model': DynamicConfig.get('llm_model', LLM_CONFIG.get('model')),
-        'max_tokens': DynamicConfig.get('llm_max_tokens', LLM_CONFIG.get('max_tokens')),
-        'chunk_size': DynamicConfig.get('llm_chunk_size', LLM_CONFIG.get('chunk_size')),
-        'timeout': DynamicConfig.get('llm_timeout', LLM_CONFIG.get('timeout')),
-    }
+    # 如果数据库中没有数据，初始化默认配置
+    if not llm_configs:
+        init_default_backup_llm()
+        llm_configs = BackupLLMConfig.query.order_by(BackupLLMConfig.sort_order).all()
     
-    # 获取备用大模型配置
-    backup_configs = BackupLLMConfig.query.order_by(BackupLLMConfig.sort_order).all()
-    
-    return render_template('admin/llm_config.html', config=config, backup_configs=[c.to_dict() for c in backup_configs])
+    return render_template('admin/llm_config.html', llm_configs=[c.to_dict() for c in llm_configs])
 
 
 @admin_bp.route('/llm_config/save', methods=['POST'])
@@ -765,17 +779,37 @@ def reset_llm_config():
 
 # ==================== 获取当前LLM配置（供其他模块使用） ====================
 def get_llm_config():
-    """获取当前LLM配置"""
-    from config import LLM_CONFIG
+    """获取当前默认LLM配置"""
+    # 从数据库获取默认配置
+    default_config = BackupLLMConfig.query.filter_by(is_default=True, is_active=True).first()
     
-    return {
-        'api_base': DynamicConfig.get('llm_api_base', LLM_CONFIG.get('api_base')),
-        'api_key': DynamicConfig.get('llm_api_key', LLM_CONFIG.get('api_key')),
-        'model': DynamicConfig.get('llm_model', LLM_CONFIG.get('model')),
-        'max_tokens': DynamicConfig.get('llm_max_tokens', LLM_CONFIG.get('max_tokens')),
-        'chunk_size': DynamicConfig.get('llm_chunk_size', LLM_CONFIG.get('chunk_size')),
-        'timeout': DynamicConfig.get('llm_timeout', LLM_CONFIG.get('timeout')),
-    }
+    if default_config:
+        return {
+            'api_base': default_config.api_base,
+            'api_key': default_config.api_key or '',
+            'model': default_config.model,
+            'max_tokens': default_config.max_tokens,
+            'chunk_size': default_config.chunk_size,
+            'timeout': default_config.timeout,
+            'provider_name': default_config.provider_name,
+        }
+    
+    # 如果没有默认配置，尝试获取第一个启用的
+    first_config = BackupLLMConfig.query.filter_by(is_active=True).order_by(BackupLLMConfig.sort_order).first()
+    if first_config:
+        return {
+            'api_base': first_config.api_base,
+            'api_key': first_config.api_key or '',
+            'model': first_config.model,
+            'max_tokens': first_config.max_tokens,
+            'chunk_size': first_config.chunk_size,
+            'timeout': first_config.timeout,
+            'provider_name': first_config.provider_name,
+        }
+    
+    # 如果都没有，使用配置文件默认值
+    from config import LLM_CONFIG
+    return LLM_CONFIG
 
 
 # ==================== 用户类型配置管理（动态增删） ====================
@@ -1234,7 +1268,7 @@ def backup_llm_list():
 @admin_bp.route('/backup-llm/add', methods=['POST'])
 @admin_required
 def add_backup_llm():
-    """添加备用大模型接口"""
+    """添加大模型接口"""
     data = request.json
     
     config = BackupLLMConfig(
@@ -1242,7 +1276,11 @@ def add_backup_llm():
         api_base=data.get('api_base'),
         api_key=data.get('api_key'),
         model=data.get('model'),
+        max_tokens=int(data.get('max_tokens', 8000)),
+        chunk_size=int(data.get('chunk_size', 2000)),
+        timeout=int(data.get('timeout', 180)),
         is_active=data.get('is_active', True),
+        is_default=False,
         sort_order=int(data.get('sort_order', 0)),
         description=data.get('description'),
     )
@@ -1254,7 +1292,7 @@ def add_backup_llm():
     log = OperationLog(
         user_id=session.get('user_id'),
         username='admin',
-        action='add_backup_llm',
+        action='add_llm_config',
         target=config.provider_name,
         detail=json.dumps(config.to_dict(), ensure_ascii=False)
     )
@@ -1267,7 +1305,7 @@ def add_backup_llm():
 @admin_bp.route('/backup-llm/<int:config_id>/edit', methods=['POST'])
 @admin_required
 def edit_backup_llm(config_id):
-    """编辑备用大模型接口"""
+    """编辑大模型接口"""
     config = BackupLLMConfig.query.get_or_404(config_id)
     data = request.json
     
@@ -1275,6 +1313,9 @@ def edit_backup_llm(config_id):
     config.api_base = data.get('api_base', config.api_base)
     config.api_key = data.get('api_key', config.api_key)
     config.model = data.get('model', config.model)
+    config.max_tokens = int(data.get('max_tokens', config.max_tokens))
+    config.chunk_size = int(data.get('chunk_size', config.chunk_size))
+    config.timeout = int(data.get('timeout', config.timeout))
     config.is_active = data.get('is_active', True)
     config.sort_order = int(data.get('sort_order', config.sort_order))
     config.description = data.get('description', config.description)
@@ -1285,7 +1326,7 @@ def edit_backup_llm(config_id):
     log = OperationLog(
         user_id=session.get('user_id'),
         username='admin',
-        action='edit_backup_llm',
+        action='edit_llm_config',
         target=config.provider_name,
         detail=json.dumps(config.to_dict(), ensure_ascii=False)
     )
@@ -1321,7 +1362,7 @@ def delete_backup_llm(config_id):
 @admin_bp.route('/backup-llm/<int:config_id>/toggle', methods=['POST'])
 @admin_required
 def toggle_backup_llm(config_id):
-    """切换备用大模型接口状态"""
+    """切换大模型接口状态"""
     config = BackupLLMConfig.query.get_or_404(config_id)
     config.is_active = not config.is_active
     db.session.commit()
@@ -1329,6 +1370,34 @@ def toggle_backup_llm(config_id):
     return jsonify({'success': True, 'is_active': config.is_active})
 
 
+@admin_bp.route('/backup-llm/<int:config_id>/set-default', methods=['POST'])
+@admin_required
+def set_default_llm(config_id):
+    """设置默认大模型接口"""
+    config = BackupLLMConfig.query.get_or_404(config_id)
+    
+    # 先清除所有默认标记
+    BackupLLMConfig.query.update({'is_default': False})
+    
+    # 设置当前为默认
+    config.is_default = True
+    config.is_active = True  # 默认的必须启用
+    db.session.commit()
+    
+    # 记录日志
+    log = OperationLog(
+        user_id=session.get('user_id'),
+        username='admin',
+        action='set_default_llm',
+        target=config.provider_name,
+        detail=f'设置 {config.provider_name} 为默认大模型'
+    )
+    db.session.add(log)
+    db.session.commit()
+    
+    return jsonify({'success': True, 'config': config.to_dict()})
+
+
 @admin_bp.route('/backup-llm/<int:config_id>/test', methods=['POST'])
 @admin_required
 def test_backup_llm(config_id):
@@ -1402,4 +1471,20 @@ def init_default_backup_llm():
 def get_backup_llm_configs():
     """获取所有备用大模型配置（供其他模块使用）"""
     configs = BackupLLMConfig.query.filter_by(is_active=True).order_by(BackupLLMConfig.sort_order).all()
-    return [c.to_dict() for c in configs]
+    return [c.to_dict() for c in configs]
+
+
+# ==================== 获取网站基础配置（供其他模块使用） ====================
+def get_site_config():
+    """获取网站基础配置"""
+    return {
+        'site_name': DynamicConfig.get('site_name', 'PDF翻译助手'),
+        'site_footer': DynamicConfig.get('site_footer', '© 2026 PDF翻译助手'),
+        'max_file_size': DynamicConfig.get('max_file_size', 50),
+        'cache_expire_days': DynamicConfig.get('cache_expire_days', 30),
+        'enable_email_notify': DynamicConfig.get('enable_email_notify', True),
+        'enable_cache': DynamicConfig.get('enable_cache', True),
+        'enable_guest': DynamicConfig.get('enable_guest', True),
+        'default_source_lang': DynamicConfig.get('default_source_lang', 'en'),
+        'default_target_lang': DynamicConfig.get('default_target_lang', 'zh'),
+    }

app.py

@@ -34,6 +34,14 @@ db.init_app(app)
 # 注册后台管理蓝图
 app.register_blueprint(admin_bp)
 
+# Context processor - 所有模板自动获得 site_config
+@app.context_processor
+def inject_site_config():
+    def get_config():
+        from admin import get_site_config
+        return get_site_config()
+    return {'site_config': get_config()}
+
 # 初始化服务
 cache_service = CacheService(CACHE_DIR, CACHE_EXPIRE_DAYS)
 

models.py

@@ -871,7 +871,7 @@ class EmailNotification(db.Model):
 
 # ==================== 备用大模型接口配置 ====================
 class BackupLLMConfig(db.Model):
-    """备用大模型接口配置"""
+    """大模型接口配置"""
     __tablename__ = 'backup_llm_config'
     
     id = db.Column(db.Integer, primary_key=True)
@@ -882,8 +882,14 @@ class BackupLLMConfig(db.Model):
     api_key = db.Column(db.String(255), nullable=True)           # API Key（可选）
     model = db.Column(db.String(100), nullable=True)             # 默认模型
     
+    # 配置参数
+    max_tokens = db.Column(db.Integer, default=8000)             # 最大输出Token
+    chunk_size = db.Column(db.Integer, default=2000)             # 分块大小
+    timeout = db.Column(db.Integer, default=180)                 # 超时时间
+    
     # 状态
     is_active = db.Column(db.Boolean, default=True)              # 是否启用
+    is_default = db.Column(db.Boolean, default=False)            # 是否默认使用
     sort_order = db.Column(db.Integer, default=0)                # 排序
     
     # 备注
@@ -900,7 +906,11 @@ class BackupLLMConfig(db.Model):
             'api_base': self.api_base,
             'api_key': self.api_key,
             'model': self.model,
+            'max_tokens': self.max_tokens,
+            'chunk_size': self.chunk_size,
+            'timeout': self.timeout,
             'is_active': self.is_active,
+            'is_default': self.is_default,
             'sort_order': self.sort_order,
             'description': self.description,
             'created_at': self.created_at.isoformat() if self.created_at else None,

static/js/main.js

@@ -23,6 +23,14 @@ document.getElementById('uploadForm').addEventListener('submit', async function(
         return;
     }
     
+    // 检查文件大小
+    const maxSizeMB = parseInt(document.getElementById('submitBtn').dataset.maxSize) || 50;
+    const fileSizeMB = file.size / (1024 * 1024);
+    if (fileSizeMB > maxSizeMB) {
+        alert(`文件大小超出限制（最大${maxSizeMB}MB，当前${fileSizeMB.toFixed(1)}MB）`);
+        return;
+    }
+    
     // 显示进度区域
     document.getElementById('progressSection').style.display = 'block';
     document.getElementById('resultSection').style.display = 'none';

templates/admin/llm_config.html

@@ -14,6 +14,8 @@
         .main-content { margin-left: 250px; padding: 20px; }
         .table th, .table td { font-size: 0.9rem; }
         .status-badge { font-size: 0.75rem; }
+        .default-badge { font-size: 0.75rem; }
+        .row-default { background-color: rgba(13, 110, 253, 0.05); }
     </style>
 </head>
 <body>
@@ -22,17 +24,17 @@
             <h5 class="text-white mb-0"><i class="bi bi-gear-fill"></i> 后台管理</h5>
         </div>
         <ul class="nav flex-column">
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.dashboard') }}"><i class="bi bi-speedometer2"></i> 数据概览</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.users') }}"><i class="bi bi-people"></i> 用户管理</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.translations') }}"><i class="bi bi-file-text"></i> 翻译记录</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.cache_list') }}"><i class="bi bi-database"></i> 缓存管理</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.packages') }}"><i class="bi bi-box-seam"></i> 数据包套餐</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.stats') }}"><i class="bi bi-bar-chart"></i> 统计报表</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.logs') }}"><i class="bi bi-list-check"></i> 操作日志</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.dashboard') }}"><i class="bi bi-speedometer2"></i> 数据概览</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.users') }}"><i class="bi bi-people"></i> 用户管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.translations') }}"><i class="bi bi-file-text"></i> 翻译记录</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.cache_list') }}"><i class="bi bi-database"></i> 缓存管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.packages') }}"><i class="bi bi-box-seam"></i> 数据包套餐</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.stats') }}"><i class="bi bi-bar-chart"></i> 统计报表</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.logs') }}"><i class="bi bi-list-check"></i> 操作日志</a></li>
             <li class="nav-item"><a class="nav-link active" href="{{ url_for('admin.llm_config') }}"><i class="bi bi-cpu"></i> 大模型配置</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.user_types') }}"><i class="bi bi-person-badge"></i> 用户类型</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.membership_plans') }}"><i class="bi bi-credit-card"></i> 会员套餐</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.settings') }}"><i class="bi bi-sliders"></i> 系统配置</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.user_types') }}"><i class="bi bi-person-badge"></i> 用户类型</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.membership_plans') }}"><i class="bi bi-credit-card"></i> 会员套餐</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.settings') }}"><i class="bi bi-sliders"></i> 系统配置</a></li>
         </ul>
         <div class="position-absolute bottom-0 w-100 p-3 border-top border-secondary">
             <a href="/" class="btn btn-outline-light btn-sm w-100"><i class="bi bi-house"></i> 返回前台</a>
@@ -40,65 +42,17 @@
     </nav>
 
     <main class="main-content">
-        <!-- 主配置 -->
         <div class="card">
-            <div class="card-header">
-                <h6 class="mb-0"><i class="bi bi-cpu"></i> 主大模型接口配置</h6>
-            </div>
-            <div class="card-body">
-                <form id="llmConfigForm">
-                    <div class="row">
-                        <div class="col-md-6">
-                            <div class="mb-3">
-                                <label class="form-label">API 地址</label>
-                                <input type="text" class="form-control" name="api_base" value="{{ config.api_base }}" placeholder="http://localhost:1234/v1">
-                                <small class="text-muted">LLM服务的API endpoint</small>
-                            </div>
-                            <div class="mb-3">
-                                <label class="form-label">API Key</label>
-                                <input type="text" class="form-control" name="api_key" value="{{ config.api_key }}" placeholder="sk-xxx">
-                                <small class="text-muted">如果不需要可留空</small>
-                            </div>
-                            <div class="mb-3">
-                                <label class="form-label">模型名称</label>
-                                <input type="text" class="form-control" name="model" value="{{ config.model }}" placeholder="qwen/qwen3.5-35b">
-                                <small class="text-muted">使用的模型ID</small>
-                            </div>
-                        </div>
-                        <div class="col-md-6">
-                            <div class="mb-3">
-                                <label class="form-label">最大输出Token</label>
-                                <input type="number" class="form-control" name="max_tokens" value="{{ config.max_tokens }}" placeholder="8000">
-                            </div>
-                            <div class="mb-3">
-                                <label class="form-label">分块大小</label>
-                                <input type="number" class="form-control" name="chunk_size" value="{{ config.chunk_size }}" placeholder="2000">
-                            </div>
-                            <div class="mb-3">
-                                <label class="form-label">超时时间（秒）</label>
-                                <input type="number" class="form-control" name="timeout" value="{{ config.timeout }}" placeholder="180">
-                            </div>
-                        </div>
-                    </div>
-                    
-                    <div class="mt-3">
-                        <button type="submit" class="btn btn-primary"><i class="bi bi-check-lg"></i> 保存配置</button>
-                        <button type="button" class="btn btn-outline-secondary" onclick="testMainConnection()"><i class="bi bi-plug"></i> 测试连接</button>
-                        <button type="button" class="btn btn-outline-warning" onclick="resetToDefault()"><i class="bi bi-arrow-counterclockwise"></i> 恢复默认</button>
-                    </div>
-                </form>
-                
-                <div id="mainTestResult" class="mt-3" style="display:none;"></div>
-            </div>
-        </div>
-        
-        <!-- 备用大模型 -->
-        <div class="card mt-3">
             <div class="card-header d-flex justify-content-between align-items-center">
-                <h6 class="mb-0"><i class="bi bi-cloud"></i> 备用大模型接口</h6>
-                <button class="btn btn-sm btn-primary" onclick="showAddModal()"><i class="bi bi-plus-lg"></i> 新增</button>
+                <h6 class="mb-0"><i class="bi bi-cpu"></i> 大模型接口配置</h6>
+                <button class="btn btn-sm btn-primary" onclick="showAddModal()"><i class="bi bi-plus-lg"></i> 新增接口</button>
             </div>
             <div class="card-body">
+                <p class="text-muted mb-3">
+                    <i class="bi bi-info-circle"></i> 
+                    从列表中选择一个接口设为<strong>默认</strong>，系统将使用该接口进行翻译。点击"设为默认"按钮即可切换。
+                </p>
+                
                 <table class="table table-sm table-hover">
                     <thead class="table-light">
                         <tr>
@@ -106,13 +60,15 @@
                             <th>服务商</th>
                             <th>API地址</th>
                             <th>模型</th>
+                            <th style="width: 60px;">Token</th>
                             <th style="width: 70px;">状态</th>
-                            <th style="width: 130px;">操作</th>
+                            <th style="width: 70px;">默认</th>
+                            <th style="width: 180px;">操作</th>
                         </tr>
                     </thead>
                     <tbody>
-                        {% for item in backup_configs %}
-                        <tr id="backup-row-{{ item.id }}">
+                        {% for item in llm_configs %}
+                        <tr id="llm-row-{{ item.id }}" class="{% if item.is_default %}row-default{% endif %}">
                             <td>{{ item.sort_order }}</td>
                             <td>
                                 <strong>{{ item.provider_name }}</strong>
@@ -120,6 +76,7 @@
                             </td>
                             <td><code style="font-size: 0.8rem;">{{ item.api_base }}</code></td>
                             <td><code style="font-size: 0.8rem;">{{ item.model or '默认' }}</code></td>
+                            <td>{{ item.max_tokens }}</td>
                             <td>
                                 {% if item.is_active %}
                                 <span class="badge bg-success status-badge">启用</span>
@@ -128,53 +85,88 @@
                                 {% endif %}
                             </td>
                             <td>
-                                <button class="btn btn-sm btn-outline-primary" onclick="testBackup({{ item.id }})" title="测试"><i class="bi bi-plug"></i></button>
-                                <button class="btn btn-sm btn-outline-secondary" onclick="showEditModal({{ item.id }})" title="编辑"><i class="bi bi-pencil"></i></button>
-                                <button class="btn btn-sm btn-outline-warning" onclick="toggleBackup({{ item.id }})" title="切换"><i class="bi bi-toggle2"></i></button>
-                                <button class="btn btn-sm btn-outline-danger" onclick="deleteBackup({{ item.id }})" title="删除"><i class="bi bi-trash"></i></button>
+                                {% if item.is_default %}
+                                <span class="badge bg-primary default-badge"><i class="bi bi-star-fill"></i> 默认</span>
+                                {% else %}
+                                <span class="text-muted">-</span>
+                                {% endif %}
+                            </td>
+                            <td>
+                                <div class="d-flex gap-1">
+                                    <button class="btn btn-outline-primary" onclick="testLLM({{ item.id }})" title="测试连接"><i class="bi bi-plug fs-5"></i></button>
+                                    <button class="btn btn-outline-secondary" onclick="showEditModal({{ item.id }})" title="编辑"><i class="bi bi-pencil fs-5"></i></button>
+                                    {% if not item.is_default %}
+                                    <button class="btn btn-outline-success" onclick="setDefault({{ item.id }})" title="设为默认"><i class="bi bi-star-fill fs-5"></i></button>
+                                    {% endif %}
+                                    <button class="btn btn-outline-warning" onclick="toggleLLM({{ item.id }})" title="启用/禁用"><i class="bi bi-power fs-5"></i></button>
+                                    {% if not item.is_default %}
+                                    <button class="btn btn-outline-danger" onclick="deleteLLM({{ item.id }})" title="删除"><i class="bi bi-trash fs-5"></i></button>
+                                    {% endif %}
+                                </div>
                             </td>
                         </tr>
                         {% else %}
-                        <tr><td colspan="6" class="text-center text-muted py-3">暂无备用大模型配置</td></tr>
+                        <tr><td colspan="8" class="text-center text-muted py-3">
+                            <i class="bi bi-cloud-slash" style="font-size: 1.5rem;"></i><br>
+                            暂无大模型配置，点击右上角"新增接口"添加
+                        </td></tr>
                         {% endfor %}
                     </tbody>
                 </table>
                 
-                <div id="backupTestResult" class="mt-2" style="display:none;"></div>
+                <div id="testResult" class="mt-2" style="display:none;"></div>
             </div>
         </div>
     </main>
     
     <!-- 新增/编辑模态框 -->
-    <div class="modal fade" id="backupModal" tabindex="-1">
-        <div class="modal-dialog">
+    <div class="modal fade" id="llmModal" tabindex="-1">
+        <div class="modal-dialog modal-lg">
             <div class="modal-content">
                 <div class="modal-header">
-                    <h6 class="modal-title" id="modalTitle">新增备用大模型</h6>
+                    <h6 class="modal-title" id="modalTitle">新增大模型接口</h6>
                     <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                 </div>
                 <div class="modal-body">
-                    <form id="backupForm">
-                        <input type="hidden" id="backup_id" name="id">
-                        <div class="mb-3">
-                            <label class="form-label">服务商名称 <span class="text-danger">*</span></label>
-                            <input type="text" class="form-control" id="provider_name" name="provider_name" required placeholder="如: OpenAI">
-                        </div>
-                        <div class="mb-3">
-                            <label class="form-label">API地址 <span class="text-danger">*</span></label>
-                            <input type="text" class="form-control" id="api_base" name="api_base" required placeholder="https://api.openai.com/v1">
-                        </div>
-                        <div class="mb-3">
-                            <label class="form-label">API Key</label>
-                            <input type="text" class="form-control" id="api_key" name="api_key" placeholder="sk-xxx（可选）">
-                        </div>
-                        <div class="mb-3">
-                            <label class="form-label">默认模型</label>
-                            <input type="text" class="form-control" id="model" name="model" placeholder="gpt-4">
-                        </div>
-                        <div class="mb-3">
-                            <label class="form-label">备注</label>
-                            <input type="text" class="form-control" id="description" name="description">
+                    <form id="llmForm">
+                        <input type="hidden" id="llm_id" name="id">
+                        <div class="row">
+                            <div class="col-md-6">
+                                <div class="mb-3">
+                                    <label class="form-label">服务商名称 <span class="text-danger">*</span></label>
+                                    <input type="text" class="form-control" id="provider_name" name="provider_name" required placeholder="如: OpenAI">
+                                </div>
+                                <div class="mb-3">
+                                    <label class="form-label">API地址 <span class="text-danger">*</span></label>
+                                    <input type="text" class="form-control" id="api_base" name="api_base" required placeholder="https://api.openai.com/v1">
+                                </div>
+                                <div class="mb-3">
+                                    <label class="form-label">API Key</label>
+                                    <input type="text" class="form-control" id="api_key" name="api_key" placeholder="sk-xxx（可选）">
+                                </div>
+                                <div class="mb-3">
+                                    <label class="form-label">默认模型</label>
+                                    <input type="text" class="form-control" id="model" name="model" placeholder="gpt-4">
+                                </div>
+                            </div>
+                            <div class="col-md-6">
+                                <div class="mb-3">
+                                    <label class="form-label">最大输出Token</label>
+                                    <input type="number" class="form-control" id="max_tokens" name="max_tokens" value="8000">
+                                </div>
+                                <div class="mb-3">
+                                    <label class="form-label">分块大小</label>
+                                    <input type="number" class="form-control" id="chunk_size" name="chunk_size" value="2000">
+                                </div>
+                                <div class="mb-3">
+                                    <label class="form-label">超时时间（秒）</label>
+                                    <input type="number" class="form-control" id="timeout" name="timeout" value="180">
+                                </div>
+                                <div class="mb-3">
+                                    <label class="form-label">备注</label>
+                                    <input type="text" class="form-control" id="description" name="description">
+                                </div>
+                            </div>
                         </div>
                         <div class="row">
                             <div class="col-6">
@@ -192,8 +184,9 @@
                     </form>
                 </div>
                 <div class="modal-footer">
+                    <button type="button" class="btn btn-outline-primary" onclick="testFormConnection()"><i class="bi bi-plug"></i> 测试连接</button>
                     <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
-                    <button type="button" class="btn btn-primary" onclick="saveBackup()"><i class="bi bi-check-lg"></i> 保存</button>
+                    <button type="button" class="btn btn-primary" onclick="saveLLM()"><i class="bi bi-check-lg"></i> 保存</button>
                 </div>
             </div>
         </div>
@@ -201,69 +194,19 @@
     
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
     <script>
-    // 主配置
-    document.getElementById('llmConfigForm').addEventListener('submit', function(e) {
-        e.preventDefault();
-        const formData = new FormData(this);
-        const data = {};
-        formData.forEach((value, key) => {
-            data[key] = ['max_tokens', 'chunk_size', 'timeout'].includes(key) ? parseInt(value) || 0 : value;
-        });
-        
-        fetch('/admin/llm_config/save', {
-            method: 'POST',
-            headers: {'Content-Type': 'application/json'},
-            body: JSON.stringify(data)
-        })
-        .then(r => r.json())
-        .then(res => alert(res.success ? '配置已保存！' : '保存失败: ' + res.error))
-        .catch(err => alert('请求失败: ' + err));
-    });
-    
-    function testMainConnection() {
-        const formData = new FormData(document.getElementById('llmConfigForm'));
-        const data = {};
-        formData.forEach((value, key) => {
-            data[key] = ['max_tokens', 'chunk_size', 'timeout'].includes(key) ? parseInt(value) || 0 : value;
-        });
-        
-        const div = document.getElementById('mainTestResult');
-        div.style.display = 'block';
-        div.innerHTML = '<div class="alert alert-info"><i class="bi bi-hourglass-split"></i> 测试中...</div>';
-        
-        fetch('/admin/llm_config/test', {
-            method: 'POST',
-            headers: {'Content-Type': 'application/json'},
-            body: JSON.stringify(data)
-        })
-        .then(r => r.json())
-        .then(res => {
-            div.innerHTML = res.success 
-                ? `<div class="alert alert-success"><i class="bi bi-check-circle"></i> 连接成功！模型: ${res.model}</div>`
-                : `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 连接失败: ${res.error}</div>`;
-        })
-        .catch(err => div.innerHTML = `<div class="alert alert-danger">请求失败: ${err}</div>`);
-    }
-    
-    function resetToDefault() {
-        if (confirm('确定恢复默认配置？')) {
-            fetch('/admin/llm_config/reset', {method: 'POST'})
-            .then(r => r.json())
-            .then(res => res.success ? location.reload() : alert('恢复失败: ' + res.error));
-        }
-    }
-    
-    // 备用大模型
-    const backupData = {{ backup_configs | tojson }};
-    const modal = new bootstrap.Modal(document.getElementById('backupModal'));
+    const llmData = {{ llm_configs | tojson }};
+    const modal = new bootstrap.Modal(document.getElementById('llmModal'));
     
     function showAddModal() {
-        document.getElementById('modalTitle').textContent = '新增备用大模型';
-        document.getElementById('backup_id').value = '';
+        document.getElementById('modalTitle').textContent = '新增大模型接口';
+        document.getElementById('llm_id').value = '';
         document.getElementById('provider_name').value = '';
         document.getElementById('api_base').value = '';
         document.getElementById('api_key').value = '';
         document.getElementById('model').value = '';
+        document.getElementById('max_tokens').value = '8000';
+        document.getElementById('chunk_size').value = '2000';
+        document.getElementById('timeout').value = '180';
         document.getElementById('description').value = '';
         document.getElementById('sort_order').value = '0';
         document.getElementById('is_active').value = 'true';
@@ -271,28 +214,34 @@
     }
     
     function showEditModal(id) {
-        const item = backupData.find(b => b.id === id);
+        const item = llmData.find(b => b.id === id);
         if (!item) return;
         
-        document.getElementById('modalTitle').textContent = '编辑备用大模型';
-        document.getElementById('backup_id').value = id;
+        document.getElementById('modalTitle').textContent = '编辑大模型接口';
+        document.getElementById('llm_id').value = id;
         document.getElementById('provider_name').value = item.provider_name;
         document.getElementById('api_base').value = item.api_base;
         document.getElementById('api_key').value = item.api_key || '';
         document.getElementById('model').value = item.model || '';
+        document.getElementById('max_tokens').value = item.max_tokens;
+        document.getElementById('chunk_size').value = item.chunk_size;
+        document.getElementById('timeout').value = item.timeout;
         document.getElementById('description').value = item.description || '';
         document.getElementById('sort_order').value = item.sort_order;
         document.getElementById('is_active').value = item.is_active ? 'true' : 'false';
         modal.show();
     }
     
-    function saveBackup() {
-        const id = document.getElementById('backup_id').value;
+    function saveLLM() {
+        const id = document.getElementById('llm_id').value;
         const data = {
             provider_name: document.getElementById('provider_name').value,
             api_base: document.getElementById('api_base').value,
             api_key: document.getElementById('api_key').value,
             model: document.getElementById('model').value,
+            max_tokens: parseInt(document.getElementById('max_tokens').value) || 8000,
+            chunk_size: parseInt(document.getElementById('chunk_size').value) || 2000,
+            timeout: parseInt(document.getElementById('timeout').value) || 180,
             description: document.getElementById('description').value,
             sort_order: parseInt(document.getElementById('sort_order').value) || 0,
             is_active: document.getElementById('is_active').value === 'true'
@@ -317,8 +266,8 @@
         .catch(err => alert('请求失败: ' + err));
     }
     
-    function testBackup(id) {
-        const div = document.getElementById('backupTestResult');
+    function testLLM(id) {
+        const div = document.getElementById('testResult');
         div.style.display = 'block';
         div.innerHTML = '<div class="alert alert-info"><i class="bi bi-hourglass-split"></i> 测试中...</div>';
         
@@ -326,24 +275,58 @@
         .then(r => r.json())
         .then(res => {
             div.innerHTML = res.success 
-                ? `<div class="alert alert-success"><i class="bi bi-check-circle"></i> ${res.provider} 连接成功</div>`
+                ? `<div class="alert alert-success"><i class="bi bi-check-circle"></i> ${res.provider} 连接成功！模型: ${res.model}</div>`
                 : `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 连接失败: ${res.error}</div>`;
         })
         .catch(err => div.innerHTML = `<div class="alert alert-danger">请求失败: ${err}</div>`);
     }
     
-    function toggleBackup(id) {
+    function testFormConnection() {
+        const data = {
+            api_base: document.getElementById('api_base').value,
+            api_key: document.getElementById('api_key').value,
+            model: document.getElementById('model').value
+        };
+        
+        const div = document.getElementById('testResult');
+        div.style.display = 'block';
+        div.innerHTML = '<div class="alert alert-info"><i class="bi bi-hourglass-split"></i> 测试中...</div>';
+        
+        fetch('/admin/llm_config/test', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify(data)
+        })
+        .then(r => r.json())
+        .then(res => {
+            div.innerHTML = res.success 
+                ? `<div class="alert alert-success"><i class="bi bi-check-circle"></i> 连接成功！</div>`
+                : `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 连接失败: ${res.error}</div>`;
+        })
+        .catch(err => div.innerHTML = `<div class="alert alert-danger">请求失败: ${err}</div>`);
+    }
+    
+    function setDefault(id) {
+        fetch(`/admin/backup-llm/${id}/set-default`, {method: 'POST'})
+        .then(r => r.json())
+        .then(res => {
+            if (res.success) location.reload();
+            else alert('设置失败');
+        });
+    }
+    
+    function toggleLLM(id) {
         fetch(`/admin/backup-llm/${id}/toggle`, {method: 'POST'})
         .then(r => r.json())
         .then(res => res.success ? location.reload() : alert('操作失败'));
     }
     
-    function deleteBackup(id) {
-        if (confirm('确定删除此备用接口？')) {
+    function deleteLLM(id) {
+        if (confirm('确定删除此接口？')) {
             fetch(`/admin/backup-llm/${id}/delete`, {method: 'POST'})
             .then(r => r.json())
             .then(res => {
-                if (res.success) document.getElementById(`backup-row-${id}`).remove();
+                if (res.success) document.getElementById(`llm-row-${id}`).remove();
                 else alert('删除失败');
             });
         }

templates/admin/settings.html

@@ -22,16 +22,16 @@
             <h5 class="text-white mb-0"><i class="bi bi-gear-fill"></i> 后台管理</h5>
         </div>
         <ul class="nav flex-column">
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.dashboard') }}"><i class="bi bi-speedometer2"></i> 数据概览</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.users') }}"><i class="bi bi-people"></i> 用户管理</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.translations') }}"><i class="bi bi-file-text"></i> 翻译记录</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.cache_list') }}"><i class="bi bi-database"></i> 缓存管理</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.packages') }}"><i class="bi bi-box-seam"></i> 数据包套餐</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.stats') }}"><i class="bi bi-bar-chart"></i> 统计报表</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.logs') }}"><i class="bi bi-list-check"></i> 操作日志</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.llm_config') }}"><i class="bi bi-cpu"></i> 大模型配置</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.user_types') }}"><i class="bi bi-person-badge"></i> 用户类型</a></li>
-            <li class="nav-item"><a class="nav-link " href="{{ url_for('admin.membership_plans') }}"><i class="bi bi-credit-card"></i> 会员套餐</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.dashboard') }}"><i class="bi bi-speedometer2"></i> 数据概览</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.users') }}"><i class="bi bi-people"></i> 用户管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.translations') }}"><i class="bi bi-file-text"></i> 翻译记录</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.cache_list') }}"><i class="bi bi-database"></i> 缓存管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.packages') }}"><i class="bi bi-box-seam"></i> 数据包套餐</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.stats') }}"><i class="bi bi-bar-chart"></i> 统计报表</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.logs') }}"><i class="bi bi-list-check"></i> 操作日志</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.llm_config') }}"><i class="bi bi-cpu"></i> 大模型配置</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.user_types') }}"><i class="bi bi-person-badge"></i> 用户类型</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.membership_plans') }}"><i class="bi bi-credit-card"></i> 会员套餐</a></li>
             <li class="nav-item"><a class="nav-link active" href="{{ url_for('admin.settings') }}"><i class="bi bi-sliders"></i> 系统配置</a></li>
         </ul>
         <div class="position-absolute bottom-0 w-100 p-3 border-top border-secondary">
@@ -42,6 +42,92 @@
     <main class="main-content">
         <h4 class="mb-4"><i class="bi bi-sliders"></i> 系统配置</h4>
         
+        <!-- 网站基础配置 -->
+        <div class="card mb-4">
+            <div class="card-header">
+                <h6 class="mb-0"><i class="bi bi-building"></i> 网站基础配置</h6>
+            </div>
+            <div class="card-body">
+                <form id="siteConfigForm">
+                    <div class="row">
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label class="form-label">网站名称</label>
+                                <input type="text" class="form-control" name="site_name" value="{{ site_config.site_name }}" placeholder="PDF翻译助手">
+                                <small class="text-muted">显示在页面标题和Logo处</small>
+                            </div>
+                            <div class="mb-3">
+                                <label class="form-label">底部信息</label>
+                                <textarea class="form-control" name="site_footer" rows="2" placeholder="© 2026 PDF翻译助手">{{ site_config.site_footer }}</textarea>
+                                <small class="text-muted">显示在页面底部，支持HTML</small>
+                            </div>
+                            <div class="mb-3">
+                                <label class="form-label">默认源语言</label>
+                                <select class="form-select" name="default_source_lang">
+                                    <option value="en" {% if site_config.default_source_lang == 'en' %}selected{% endif %}>英语 (en)</option>
+                                    <option value="ja" {% if site_config.default_source_lang == 'ja' %}selected{% endif %}>日语 (ja)</option>
+                                    <option value="ko" {% if site_config.default_source_lang == 'ko' %}selected{% endif %}>韩语 (ko)</option>
+                                    <option value="fr" {% if site_config.default_source_lang == 'fr' %}selected{% endif %}>法语 (fr)</option>
+                                    <option value="de" {% if site_config.default_source_lang == 'de' %}selected{% endif %}>德语 (de)</option>
+                                    <option value="es" {% if site_config.default_source_lang == 'es' %}selected{% endif %}>西班牙语 (es)</option>
+                                    <option value="ru" {% if site_config.default_source_lang == 'ru' %}selected{% endif %}>俄语 (ru)</option>
+                                    <option value="pt" {% if site_config.default_source_lang == 'pt' %}selected{% endif %}>葡萄牙语 (pt)</option>
+                                    <option value="zh" {% if site_config.default_source_lang == 'zh' %}selected{% endif %}>中文 (zh)</option>
+                                </select>
+                            </div>
+                            <div class="mb-3">
+                                <label class="form-label">默认目标语言</label>
+                                <select class="form-select" name="default_target_lang">
+                                    <option value="zh" {% if site_config.default_target_lang == 'zh' %}selected{% endif %}>中文 (zh)</option>
+                                    <option value="en" {% if site_config.default_target_lang == 'en' %}selected{% endif %}>英语 (en)</option>
+                                    <option value="ja" {% if site_config.default_target_lang == 'ja' %}selected{% endif %}>日语 (ja)</option>
+                                    <option value="ko" {% if site_config.default_target_lang == 'ko' %}selected{% endif %}>韩语 (ko)</option>
+                                </select>
+                            </div>
+                        </div>
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label class="form-label">最大上传文件大小 (MB)</label>
+                                <input type="number" class="form-control" name="max_file_size" value="{{ site_config.max_file_size }}" min="1" max="500">
+                                <small class="text-muted">用户上传PDF文件的最大大小限制</small>
+                            </div>
+                            <div class="mb-3">
+                                <label class="form-label">缓存有效期 (天)</label>
+                                <input type="number" class="form-control" name="cache_expire_days" value="{{ site_config.cache_expire_days }}" min="1" max="365">
+                                <small class="text-muted">翻译结果缓存的保留天数</small>
+                            </div>
+                            <div class="mb-3">
+                                <div class="form-check form-switch">
+                                    <input class="form-check-input" type="checkbox" name="enable_cache" id="enable_cache" {% if site_config.enable_cache %}checked{% endif %}>
+                                    <label class="form-check-label" for="enable_cache">启用翻译缓存</label>
+                                </div>
+                                <small class="text-muted">相同文件翻译时直接返回缓存结果</small>
+                            </div>
+                            <div class="mb-3">
+                                <div class="form-check form-switch">
+                                    <input class="form-check-input" type="checkbox" name="enable_guest" id="enable_guest" {% if site_config.enable_guest %}checked{% endif %}>
+                                    <label class="form-check-label" for="enable_guest">允许访客翻译</label>
+                                </div>
+                                <small class="text-muted">未登录用户可以使用翻译服务</small>
+                            </div>
+                            <div class="mb-3">
+                                <div class="form-check form-switch">
+                                    <input class="form-check-input" type="checkbox" name="enable_email_notify" id="enable_email_notify" {% if site_config.enable_email_notify %}checked{% endif %}>
+                                    <label class="form-check-label" for="enable_email_notify">邮件通知</label>
+                                </div>
+                                <small class="text-muted">翻译完成后发送邮件通知用户</small>
+                            </div>
+                        </div>
+                    </div>
+                    
+                    <button type="submit" class="btn btn-primary"><i class="bi bi-check-lg"></i> 保存配置</button>
+                </form>
+                
+                <div id="saveResult" class="mt-3" style="display:none;"></div>
+            </div>
+        </div>
+        
+        <!-- 其他配置入口 -->
         <div class="row mb-4">
             <div class="col-md-6">
                 <div class="card config-card h-100">
@@ -50,14 +136,7 @@
                     </div>
                     <div class="card-body">
                         <p class="text-muted">配置不同用户类型的权限限制，包括翻译次数、页数限制、功能权限等。</p>
-                        <p><strong>支持操作：</strong></p>
-                        <ul class="small">
-                            <li>添加新的用户类型</li>
-                            <li>编辑现有类型的权限</li>
-                            <li>删除自定义类型（系统类型不可删除）</li>
-                            <li>启用/禁用用户类型</li>
-                        </ul>
-                        <a href="{{ url_for('admin.user_types') }}" class="btn btn-primary">
+                        <a href="{{ url_for('admin.user_types') }}" class="btn btn-outline-primary">
                             <i class="bi bi-gear"></i> 管理用户类型
                         </a>
                     </div>
@@ -71,15 +150,7 @@
                     </div>
                     <div class="card-body">
                         <p class="text-muted">配置会员套餐的价格、周期、描述等，用户购买后可升级用户类型。</p>
-                        <p><strong>支持操作：</strong></p>
-                        <ul class="small">
-                            <li>添加新的会员套餐</li>
-                            <li>编辑套餐价格和描述</li>
-                            <li>删除自定义套餐（系统套餐不可删除）</li>
-                            <li>上架/下架套餐</li>
-                            <li>设置推荐套餐</li>
-                        </ul>
-                        <a href="{{ url_for('admin.membership_plans') }}" class="btn btn-primary">
+                        <a href="{{ url_for('admin.membership_plans') }}" class="btn btn-outline-primary">
                             <i class="bi bi-credit-card"></i> 管理会员套餐
                         </a>
                     </div>
@@ -88,6 +159,21 @@
         </div>
 
         <div class="row mb-4">
+            <div class="col-md-6">
+                <div class="card config-card h-100">
+                    <div class="card-header">
+                        <h6 class="mb-0"><i class="bi bi-cpu"></i> 大模型配置</h6>
+                    </div>
+                    <div class="card-body">
+                        <p class="text-muted">配置翻译使用的LLM大模型API地址、模型名称等参数。</p>
+                        <p><strong>当前模型：</strong> {{ llm_config.get('model', '未设置') }}</p>
+                        <a href="{{ url_for('admin.llm_config') }}" class="btn btn-outline-primary">
+                            <i class="bi bi-cpu"></i> 配置大模型
+                        </a>
+                    </div>
+                </div>
+            </div>
+
             <div class="col-md-6">
                 <div class="card config-card h-100">
                     <div class="card-header">
@@ -101,44 +187,69 @@
                     </div>
                 </div>
             </div>
-
-            <div class="col-md-6">
-                <div class="card config-card h-100">
-                    <div class="card-header">
-                        <h6 class="mb-0"><i class="bi bi-cpu"></i> 大模型配置</h6>
-                    </div>
-                    <div class="card-body">
-                        <p class="text-muted">配置翻译使用的LLM大模型API地址、模型名称等参数。</p>
-                        <p><strong>当前模型：</strong> {{ llm_config.model }}</p>
-                        <a href="{{ url_for('admin.llm_config') }}" class="btn btn-outline-primary">
-                            <i class="bi bi-cpu"></i> 配置大模型
-                        </a>
-                    </div>
-                </div>
-            </div>
         </div>
 
+        <!-- 系统信息 -->
         <div class="card">
             <div class="card-header"><h6 class="mb-0"><i class="bi bi-info-circle"></i> 系统信息</h6></div>
             <div class="card-body">
                 <div class="row">
                     <div class="col-md-4">
-                        <p><strong>应用名称:</strong> PDF翻译助手</p>
-                        <p><strong>版本:</strong> 2.0.0</p>
+                        <p><strong>应用名称:</strong> {{ site_config.site_name }}</p>
+                        <p><strong>版本:</strong> 2.3.1</p>
                         <p><strong>框架:</strong> Flask + SQLAlchemy</p>
                     </div>
                     <div class="col-md-4">
-                        <p><strong>缓存有效期:</strong> 30天</p>
-                        <p><strong>默认最大文件:</strong> 50MB</p>
+                        <p><strong>最大文件:</strong> {{ site_config.max_file_size }}MB</p>
+                        <p><strong>缓存有效期:</strong> {{ site_config.cache_expire_days }}天</p>
                         <p><strong>数据库:</strong> SQLite</p>
                     </div>
                     <div class="col-md-4">
-                        <p><strong>API地址:</strong> {{ llm_config.api_base }}</p>
-                        <p><strong>超时时间:</strong> {{ llm_config.timeout }}秒</p>
+                        <p><strong>API地址:</strong> {{ llm_config.get('api_base', '未设置') }}</p>
+                        <p><strong>超时时间:</strong> {{ llm_config.get('timeout', 180) }}秒</p>
                     </div>
                 </div>
             </div>
         </div>
     </main>
+    
+    <script>
+    document.getElementById('siteConfigForm').addEventListener('submit', function(e) {
+        e.preventDefault();
+        const formData = new FormData(this);
+        const data = {};
+        formData.forEach((value, key) => {
+            if (key === 'max_file_size' || key === 'cache_expire_days') {
+                data[key] = parseInt(value) || 0;
+            } else if (key === 'enable_cache' || key === 'enable_guest' || key === 'enable_email_notify') {
+                data[key] = document.getElementById(key).checked;
+            } else {
+                data[key] = value;
+            }
+        });
+        
+        fetch('/admin/settings/site', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify(data)
+        })
+        .then(r => r.json())
+        .then(res => {
+            const div = document.getElementById('saveResult');
+            div.style.display = 'block';
+            if (res.success) {
+                div.innerHTML = '<div class="alert alert-success"><i class="bi bi-check-circle"></i> 配置已保存！</div>';
+                setTimeout(() => div.style.display = 'none', 2000);
+            } else {
+                div.innerHTML = '<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 保存失败: ' + (res.error || '未知错误') + '</div>';
+            }
+        })
+        .catch(err => {
+            const div = document.getElementById('saveResult');
+            div.style.display = 'block';
+            div.innerHTML = '<div class="alert alert-danger">请求失败: ' + err + '</div>';
+        });
+    });
+    </script>
 </body>
 </html>

templates/history.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>翻译历史 - PDF翻译助手</title>
+    <title>翻译历史 - {{ site_config.site_name }}</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -11,7 +11,7 @@
 <body>
     <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
             <div class="navbar-nav ms-auto">
                 <span class="nav-link text-light">👋 {{ user.username }}</span>
                 <a class="nav-link" href="/logout">退出</a>
@@ -59,5 +59,12 @@
     </main>
 
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
+
+    <!-- 页脚 -->
+    <footer class="bg-light py-4 mt-5">
+        <div class="container text-center">
+            {{ site_config.site_footer | safe }}
+        </div>
+    </footer>
 </body>
 </html>

templates/index.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>PDF翻译助手 - 英文PDF翻译中文</title>
+    <title>{{ site_config.site_name }} - 英文PDF翻译中文</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -12,7 +12,7 @@
     <!-- 导航栏 -->
     <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
             <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
                 <span class="navbar-toggler-icon"></span>
             </button>
@@ -132,7 +132,7 @@
             <div class="card-body">
                 <form id="uploadForm">
                     <div class="mb-3">
-                        <label class="form-label">选择PDF文件（最大{{ max_pages }}页）</label>
+                        <label class="form-label">选择PDF文件（最大{{ max_pages }}页，{{ site_config.max_file_size }}MB）</label>
                         <input type="file" class="form-control" id="pdfFile" name="file" accept=".pdf" required>
                         <div class="form-text">支持英文PDF翻译为中文</div>
                     </div>
@@ -145,7 +145,7 @@
                     </div>
                     {% endif %}
                     
-                    <button type="submit" class="btn btn-primary btn-lg w-100" id="submitBtn">
+                    <button type="submit" class="btn btn-primary btn-lg w-100" id="submitBtn" data-max-size="{{ site_config.max_file_size }}">
                         <span id="btnText">开始翻译</span>
                         <span id="btnSpinner" class="spinner-border spinner-border-sm" style="display:none"></span>
                     </button>
@@ -196,7 +196,7 @@
     <!-- 页脚 -->
     <footer class="bg-light py-4 mt-5">
         <div class="container text-center">
-            <p class="text-muted">PDF翻译助手 v1.0.0 | 基于本地LLM服务</p>
+            {{ site_config.site_footer | safe }}
         </div>
     </footer>
 

templates/login.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>登录 - PDF翻译助手</title>
+    <title>登录 - {{ site_config.site_name }}</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -11,7 +11,7 @@
 <body class="bg-light">
     <nav class="navbar navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
         </div>
     </nav>
 
@@ -77,5 +77,12 @@
             }
         });
     </script>
+
+    <!-- 页脚 -->
+    <footer class="bg-light py-4 mt-5">
+        <div class="container text-center">
+            {{ site_config.site_footer | safe }}
+        </div>
+    </footer>
 </body>
 </html>

templates/pricing.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>会员套餐 - PDF翻译助手</title>
+    <title>会员套餐 - {{ site_config.site_name }}</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -11,7 +11,7 @@
 <body>
     <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
             <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
                 <span class="navbar-toggler-icon"></span>
             </button>
@@ -219,5 +219,12 @@
     </main>
 
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
+
+    <!-- 页脚 -->
+    <footer class="bg-light py-4 mt-5">
+        <div class="container text-center">
+            {{ site_config.site_footer | safe }}
+        </div>
+    </footer>
 </body>
 </html>

templates/profile.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>个人中心 - PDF翻译助手</title>
+    <title>个人中心 - {{ site_config.site_name }}</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -15,7 +15,7 @@
 <body>
     <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
             <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
                 <span class="navbar-toggler-icon"></span>
             </button>
@@ -624,5 +624,12 @@
             });
         }
     </script>
+
+    <!-- 页脚 -->
+    <footer class="bg-light py-4 mt-5">
+        <div class="container text-center">
+            {{ site_config.site_footer | safe }}
+        </div>
+    </footer>
 </body>
 </html>

templates/register.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>注册 - PDF翻译助手</title>
+    <title>注册 - {{ site_config.site_name }}</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -11,7 +11,7 @@
 <body class="bg-light">
     <nav class="navbar navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
         </div>
     </nav>
 
@@ -79,5 +79,12 @@
             }
         });
     </script>
+
+    <!-- 页脚 -->
+    <footer class="bg-light py-4 mt-5">
+        <div class="container text-center">
+            {{ site_config.site_footer | safe }}
+        </div>
+    </footer>
 </body>
 </html>

templates/translation.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>翻译详情 - PDF翻译助手</title>
+    <title>翻译详情 - {{ site_config.site_name }}</title>
     <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/css/style.css" rel="stylesheet">
@@ -11,7 +11,7 @@
 <body>
     <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
         <div class="container">
-            <a class="navbar-brand" href="/">📄 PDF翻译助手</a>
+            <a class="navbar-brand" href="/">📄 {{ site_config.site_name }}</a>
             <div class="navbar-nav ms-auto">
                 {% if user %}
                 <span class="nav-link text-light">👋 {{ user.username }}</span>