:root {
            --primary-blue: #1a5276;
            --secondary-teal: #16a085;
            --accent-gold: #f39c12;
            --deep-ocean: #154360;
            --coral: #e74c3c;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #e8f4f8 0%, #d1e7f5 100%);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            background: linear-gradient(45deg, var(--primary-blue), var(--secondary-teal));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .hero-section {
            background: linear-gradient(rgba(22, 160, 133, 0.8), rgba(26, 82, 118, 0.9)), url('https://via.placeholder.com/1200x600') center/cover;
            color: white;
            padding: 4rem 0;
            border-radius: 0 0 30px 30px;
            margin-bottom: 2rem;
        }
        .content-section {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            padding: 2.5rem;
            margin-bottom: 2rem;
        }
        h1, h2, h3 {
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        h2 {
            border-left: 5px solid var(--accent-gold);
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            color: var(--secondary-teal);
            margin-top: 2rem;
        }
        .key-feature {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1rem 0;
            border-left: 4px solid var(--secondary-teal);
            transition: transform 0.3s ease;
        }
        .key-feature:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .game-image {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin: 2rem 0;
            transition: transform 0.3s ease;
        }
        .game-image:hover {
            transform: scale(1.02);
        }
        .highlight-text {
            background: linear-gradient(120deg, var(--accent-gold) 0%, var(--accent-gold) 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.3em;
            background-position: 0 88%;
            font-weight: 700;
        }
        .nav-pills .nav-link.active {
            background: linear-gradient(45deg, var(--primary-blue), var(--secondary-teal));
            font-weight: 600;
        }
        .nav-pills .nav-link {
            color: var(--primary-blue);
            font-weight: 500;
        }
        footer {
            background: var(--deep-ocean);
            color: white;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .content-paragraph {
            margin-bottom: 1.8rem;
            text-align: justify;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 2rem 0;
                border-radius: 0 0 20px 20px;
            }
            h1 {
                font-size: 2.2rem;
            }
            .content-section {
                padding: 1.5rem;
            }
        }
        .toc-item {
            padding: 0.5rem 0;
            border-bottom: 1px solid #eee;
        }
        .toc-item:last-child {
            border-bottom: none;
        }
        .emoji-icon {
            font-size: 1.5rem;
            margin-right: 0.5rem;
        }