:root {
            --primary-color: #ff6b35;
            --secondary-color: #004e89;
            --accent-color: #ffd166;
            --text-dark: #2d3142;
            --text-light: #f8f9fa;
            --bg-light: #ffffff;
            --bg-dark: #1a1a2e;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }
        .logo-text {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            letter-spacing: 1px;
        }
        .logo-subtext {
            font-size: 0.9rem;
            color: var(--secondary-color);
            font-weight: 600;
        }
        .navbar {
            background: linear-gradient(90deg, var(--secondary-color) 0%, #1a659e 100%);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            padding: 0.8rem 0;
        }
        .nav-link {
            color: var(--text-light) !important;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            transition: all 0.3s ease;
            border-radius: 4px;
        }
        .nav-link:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(0,78,137,0.85), rgba(255,107,53,0.8)), url('https://via.placeholder.com/1920x800') center/cover no-repeat;
            color: white;
            padding: 5rem 0;
            text-align: center;
            margin-bottom: 3rem;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
        }
        .hero-subtitle {
            font-size: 1.5rem;
            font-weight: 300;
            margin-bottom: 2rem;
        }
        .content-section {
            background-color: var(--bg-light);
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.08);
            padding: 2.5rem;
            margin-bottom: 2.5rem;
        }
        h1, h2, h3 {
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
            font-weight: 700;
        }
        h1 {
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            border-left: 5px solid var(--primary-color);
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            color: var(--text-dark);
            margin-top: 2rem;
            font-size: 1.4rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(255,107,53,0.1);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .game-feature {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
            border: 1px solid #e9ecef;
        }
        .game-feature:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .img-fluid {
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
            margin: 2rem 0;
            transition: transform 0.3s ease;
        }
        .img-fluid:hover {
            transform: scale(1.02);
        }
        .fact-box {
            background: linear-gradient(135deg, var(--secondary-color) 0%, #1a659e 100%);
            color: white;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }
        footer {
            background-color: var(--bg-dark);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-heading {
            color: var(--accent-color);
            font-size: 1.2rem;
            margin-bottom: 1.2rem;
            font-weight: 600;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color) 0%, #e85a1a 100%);
            border: none;
            padding: 0.7rem 1.5rem;
            font-weight: 600;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255,107,53,0.4);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1.2rem;
            }
            .content-section {
                padding: 1.5rem;
            }
            .logo-text {
                font-size: 1.8rem;
            }
        }
        .table-of-contents {
            background-color: #f8f9fa;
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            border-left: 5px solid var(--primary-color);
        }
        .toc-heading {
            color: var(--secondary-color);
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .toc-list {
            list-style-type: none;
            padding-left: 0;
        }
        .toc-list li {
            margin-bottom: 0.7rem;
            padding-left: 1rem;
            border-left: 3px solid transparent;
            transition: all 0.3s ease;
        }
        .toc-list li:hover {
            border-left-color: var(--primary-color);
            padding-left: 1.5rem;
        }
        .toc-list a {
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 500;
        }
        .toc-list a:hover {
            color: var(--primary-color);
        }