:root {
            --primary-color: #ff6b35;
            --secondary-color: #1a5276;
            --accent-color: #f39c12;
            --text-color: #2c3e50;
            --light-bg: #ecf0f1;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .main-container {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            overflow: hidden;
            margin-top: 20px;
            margin-bottom: 20px;
        }
        .logo {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 2.5rem;
            color: var(--primary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            transition: all 0.3s ease;
        }
        .logo:hover {
            transform: scale(1.05);
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 600;
            color: var(--secondary-color) !important;
            transition: all 0.3s ease;
            border-bottom: 2px solid transparent;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
            border-bottom: 2px solid var(--primary-color);
        }
        h1, h2, h3 {
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
        }
        h1 {
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
            font-size: 2.8rem;
        }
        h2 {
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 10px;
            font-size: 2.2rem;
        }
        h3 {
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .content-section {
            padding: 40px 30px;
        }
        .highlight-box {
            background: var(--light-bg);
            border-left: 4px solid var(--primary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--primary-color);
            margin-right: 15px;
        }
        .game-image {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
            margin: 20px 0;
        }
        .game-image:hover {
            transform: scale(1.02);
        }
        .key-point {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: white;
            padding: 12px 20px;
            border-radius: 30px;
            display: inline-block;
            margin: 10px 5px;
            font-weight: bold;
        }
        footer {
            background: var(--secondary-color);
            color: white;
            padding: 30px 0;
            margin-top: 40px;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .logo {
                font-size: 1.8rem;
            }
            .content-section {
                padding: 20px 15px;
            }
        }
        .table-of-contents {
            background: var(--light-bg);
            border-radius: 10px;
            padding: 20px;
            margin: 20px 0;
        }
        .toc-item {
            padding: 8px 0;
            border-bottom: 1px dashed #bdc3c7;
        }
        .toc-item:last-child {
            border-bottom: none;
        }
        .rating-stars {
            color: var(--accent-color);
            font-size: 1.2rem;
        }
        .btn-primary {
            background: var(--primary-color);
            border: none;
            padding: 10px 25px;
            font-weight: bold;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background: var(--accent-color);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }