* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            display: flex;
            min-height: 100vh;
            background-color: #f5f7fa;
            color: #333;
            transition: margin-left 0.3s ease;
        }
        
        /* 顶部导航栏样式 */
        .top-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background-color: #fff;
            border-bottom: 1px solid #e8eaed;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 30px;
            z-index: 999;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        
        .top-nav-left {
            display: flex;
            align-items: center;
        }
        
        .user-info {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        
        .logo-area {
            padding: 0;
            margin-right: 30px;
            border-bottom: none;
        }
        
        .logo {
            font-size: 20px;
            font-weight: 700;
            color: #2c3e50;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            color: #3498db;
        }
        
        .balance-info, .points-info {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 12px;
            background-color: #f8f9fa;
            border-radius: 6px;
            border: 1px solid #e9ecef;
        }
        
        .balance-label, .points-label {
            font-size: 13px;
            color: #6c757d;
        }
        
        .balance-value {
            font-size: 14px;
            font-weight: 600;
            color: #28a745;
        }
        
        .points-value {
            font-size: 14px;
            font-weight: 600;
            color: #28a745;
        }
        
        .recharge-btn, .buy-btn {
            padding: 4px 10px;
            font-size: 12px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
            font-weight: 500;
        }
        
        .recharge-btn {
            background-color: #4f46e5;
            color: white;
        }
        
        .recharge-btn:hover {
            background-color: #4f46e5;
        }
        
        .buy-btn {
            background-color: #4f46e5;
            color: white;
        }
        
        .buy-btn:hover {
            background-color: #0056b3;
        }
        
        /* 用户下拉菜单样式 */
        .user-dropdown {
            position: relative;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 12px;
            background-color: #f8f9fa;
            border-radius: 6px;
            border: 1px solid #e9ecef;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        
        .user-dropdown:hover {
            background-color: #e9ecef;
        }
        
        .username {
            font-size: 14px;
            font-weight: 500;
            color: #495057;
        }
        
        .dropdown-arrow {
            font-size: 12px;
            color: #6c757d;
            transition: transform 0.2s ease;
        }
        
        .user-dropdown:hover .dropdown-arrow {
            transform: rotate(180deg);
        }
        
        .dropdown-menu {
            position: absolute;
            top: 100%;
            right: 0;
            width: 160px;
            background-color: white;
            border-radius: 6px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 8px 0;
            margin-top: 5px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.2s ease;
            z-index: 1001;
        }
        
        .user-dropdown:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
        }
        
        .dropdown-item {
            padding: 8px 16px;
            color: #495057;
            text-decoration: none;
            display: block;
            font-size: 14px;
            transition: all 0.2s ease;
        }
        
        .dropdown-item:hover {
            background-color: #f8f9fa;
            color: #007bff;
        }
        
        .dropdown-divider {
            height: 1px;
            margin: 4px 0;
            background-color: #e9ecef;
        }
        
        /* 左侧导航栏样式 */
        .sidebar {
            width: 200px;
            background-color: #fff;
            border-right: 1px solid #e8eaed;
            height: calc(100vh - 60px);
            overflow-y: auto;
            position: fixed;
            left: 0;
            top: 60px;
            padding: 20px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
            z-index: 1000;
        }
        
        /* 极简滚动条样式 */
        .sidebar::-webkit-scrollbar {
            width: 3px;
        }
        
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        
        .sidebar::-webkit-scrollbar-thumb {
            background: rgba(120, 120, 120, 0.2);
            border-radius: 1px;
            transition: background 0.3s ease;
        }
        
        .sidebar::-webkit-scrollbar-thumb:hover {
            background: rgba(100, 100, 100, 0.3);
        }
        
        .nav-section {
            margin-bottom: 25px;
        }
        
        .nav-title {
            font-size: 12px;
            color: #95a5a6;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 0 20px;
            margin-bottom: 12px;
        }
        
        .nav-list {
            list-style: none;
        }
        
        .nav-item {
            padding: 0 16px;
            margin-bottom: 2px;
        }
        
        .nav-link {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            color: #34495e;
            text-decoration: none;
            border-radius: 8px;
            transition: all 0.2s ease;
            position: relative;
        }
        
        .nav-link:hover {
            background-color: #f8f9fa;
            color: #2980b9;
        }
        
        .nav-link.active {
            background-color: #e8f5e9;
            color: #27ae60;
            font-weight: 500;
        }
        
        .nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 4px;
            background-color: #27ae60;
            border-radius: 0 2px 2px 0;
        }
        
        .nav-icon {
            width: 20px;
            text-align: center;
            margin-right: 12px;
            font-size: 16px;
        }
        
        .nav-text {
            font-size: 15px;
        }
        
        /* 右侧内容区域 */
        .content {
            flex: 1;
            margin-left: 200px;
            margin-top: 60px;
            padding: 15px;
            transition: margin-left 0.3s ease;
        }
        
        .header {
            margin-bottom: 30px;
        }
        
        h1 {
            color: #2c3e50;
            margin-bottom: 10px;
            font-size: 28px;
        }
        
        .description {
            color: #7f8c8d;
            line-height: 1.6;
            max-width: 800px;
        }
        
        .dashboard {
            background-color: #fff;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            margin-bottom: 30px;
        }
        
        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 10px;
            left: 10px;
            z-index: 1100;
            background: #fff;
            border: none;
            border-radius: 4px;
            padding: 8px 12px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            cursor: pointer;
        }
        
        .menu-toggle i {
            font-size: 20px;
            color: #2c3e50;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .top-nav {
                padding: 0 15px;
                justify-content: flex-end; /* 移动端将内容靠右 */
            }
            
            .top-nav-left {
                margin-right: 0;
                order: 2; /* 将logo移到右侧 */
            }
            
            .logo-area {
                margin-right: 0;
                margin-left: auto; /* 使logo靠右 */
            }
            
            .logo {
                flex-direction: row-reverse; /* 图标和文字位置交换 */
            }
            
            .logo i {
                margin-right: 0;
                margin-left: 10px;
            }
            
            .user-info {
                display: none; /* 在移动端隐藏用户信息 */
            }
            
            .balance-info, .points-info {
                display: none;
            }
            
            .sidebar {
                transform: translateX(-100%);
                top: 60px;
                height: calc(100vh - 60px);
            }
            
            .sidebar.open {
                transform: translateX(0);
            }
            
            .content {
                margin-left: 0;
                margin-top: 60px;
                padding: 20px 15px;
            }
            
            .menu-toggle {
                display: block;
                position: fixed;
                top: 10px;
                left: 10px;
                z-index: 1100;
            }
        }
        
        @media (max-width: 480px) {
            .logo {
                font-size: 18px;
            }
            
            .logo i {
                font-size: 18px;
            }
        }