:root {
            --primary-color: #ff6b35;
            --secondary-color: #f7931e;
            --accent-color: #2ecc71;
            --text-dark: #2c3e50;
            --text-light: #7f8c8d;
            --bg-light: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .main-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.1);
            overflow: hidden;
            margin-top: 20px;
            margin-bottom: 20px;
        }
        .logo-brand {
            font-family: 'Arial Rounded MT Bold', 'Arial', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }
        .logo-brand:hover {
            color: var(--secondary-color);
            transform: scale(1.05);
        }
        .nav-link {
            font-weight: 600;
            color: var(--text-dark) !important;
            padding: 10px 20px !important;
            border-radius: 25px;
            transition: all 0.3s ease;
            margin: 0 5px;
        }
        .nav-link:hover, .nav-link.active {
            background: var(--primary-color);
            color: white !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="%23ffffff" opacity="0.1"><polygon points="1000,100 1000,0 0,100"/>');
            background-size: cover;
        }
        .hero-title {
            font-size: 3.5rem;
            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: 60px 0;
        }
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid var(--accent-color);
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 100px;
            height: 3px;
            background: var(--secondary-color);
        }
        .feature-box {
            background: var(--bg-light);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 25px;
            transition: all 0.3s ease;
            border-left: 5px solid var(--accent-color);
        }
        .feature-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        .game-image {
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            margin-bottom: 25px;
            transition: all 0.3s ease;
        }
        .game-image:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 40px rgba(0,0,0,0.2);
        }
        .highlight-text {
            background: linear-gradient(120deg, transparent 0%, rgba(255,107,53,0.1) 100%);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid var(--primary-color);
            margin: 25px 0;
        }
        .key-point {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }
        .key-point i {
            color: var(--accent-color);
            margin-right: 10px;
            margin-top: 5px;
            font-size: 1.2rem;
        }
        footer {
            background: var(--text-dark);
            color: white;
            padding: 40px 0 20px;
        }
        .footer-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 20px;
        }
        .social-links a {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
        .social-links a:hover {
            background: var(--primary-color);
            transform: translateY(-5px);
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 30px;
            text-align: center;
            opacity: 0.7;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .logo-brand {
                font-size: 1.8rem;
            }
            .nav-link {
                padding: 8px 15px !important;
                margin: 2px 0;
            }
        }
        .content-paragraph {
            margin-bottom: 25px;
            text-align: justify;
        }
        .keyword-highlight {
            font-weight: 700;
            color: var(--primary-color);
        }
        .table-of-contents {
            background: var(--bg-light);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
        }
        .toc-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 15px;
        }
        .toc-list {
            list-style-type: none;
            padding-left: 0;
        }
        .toc-list li {
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }
        .toc-list li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--accent-color);
        }
        .toc-list a {
            color: var(--text-dark);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .toc-list a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }