:root {
            --primary-color: #ff6b35;
            --secondary-color: #f7931e;
            --accent-color: #2e3192;
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: #ffffff;
        }
        .logo-brand {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--primary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            letter-spacing: 1px;
        }
        .logo-brand span {
            color: var(--accent-color);
        }
        .navbar {
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
        }
        .nav-link {
            font-weight: 600;
            color: var(--text-dark) !important;
            transition: all 0.3s ease;
            padding: 8px 15px !important;
            border-radius: 5px;
        }
        .nav-link:hover {
            background-color: var(--primary-color);
            color: white !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 20px;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.2);
        }
        .hero-subtitle {
            font-size: 1.4rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        .content-section {
            padding: 40px 0;
        }
        h1, h2, h3 {
            color: var(--accent-color);
            margin-bottom: 25px;
            font-weight: 700;
        }
        h1 {
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 15px;
        }
        h2 {
            border-left: 5px solid var(--secondary-color);
            padding-left: 15px;
            margin-top: 40px;
        }
        h3 {
            color: var(--primary-color);
            margin-top: 30px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight-box {
            background-color: var(--bg-light);
            border-left: 4px solid var(--primary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .key-term {
            font-weight: bold;
            color: var(--primary-color);
        }
        .game-image {
            width: 100%;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin: 25px 0;
            transition: transform 0.3s ease;
        }
        .game-image:hover {
            transform: scale(1.02);
        }
        .feature-list {
            list-style-type: none;
            padding-left: 0;
        }
        .feature-list li {
            padding: 10px 0;
            border-bottom: 1px dashed #e0e0e0;
        }
        .feature-list li:before {
            content: "✓";
            color: var(--primary-color);
            font-weight: bold;
            margin-right: 10px;
        }
        .table-of-contents {
            background-color: var(--bg-light);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 40px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
        }
        .toc-title {
            color: var(--accent-color);
            font-weight: 700;
            margin-bottom: 15px;
            text-align: center;
        }
        .toc-list {
            columns: 2;
            column-gap: 30px;
        }
        .toc-list li {
            margin-bottom: 10px;
            break-inside: avoid;
        }
        .toc-list a {
            color: var(--text-dark);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .toc-list a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        footer {
            background: linear-gradient(135deg, var(--accent-color) 0%, #1a1c5e 100%);
            color: white;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-heading {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--secondary-color);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 30px;
            font-size: 0.9rem;
            opacity: 0.8;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: var(--primary-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            background-color: var(--accent-color);
            transform: translateY(-5px);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1.1rem;
            }
            .toc-list {
                columns: 1;
            }
            .logo-brand {
                font-size: 1.8rem;
            }
        }
        .icon-bullet {
            color: var(--primary-color);
            margin-right: 10px;
        }
        .stat-box {
            text-align: center;
            padding: 20px;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            margin-bottom: 20px;
            transition: transform 0.3s ease;
        }
        .stat-box:hover {
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-light);
        }