:root {
            --primary-green: #2e8b57;
            --secondary-green: #3cb371;
            --accent-yellow: #ffd700;
            --dark-green: #228b22;
            --light-green: #90ee90;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8fff8;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-green) !important;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .nav-link {
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--primary-green) !important;
            transform: translateY(-2px);
        }
        h1, h2, h3 {
            color: var(--dark-green);
            margin-bottom: 1.2rem;
            font-weight: 700;
        }
        h1 {
            border-bottom: 3px solid var(--accent-yellow);
            padding-bottom: 0.5rem;
            font-size: 2.5rem;
        }
        h2 {
            border-left: 5px solid var(--secondary-green);
            padding-left: 1rem;
            margin-top: 2.5rem;
            font-size: 2rem;
        }
        h3 {
            color: var(--primary-green);
            font-size: 1.5rem;
            margin-top: 2rem;
        }
        .lead {
            font-size: 1.25rem;
            color: #555;
            font-weight: 500;
        }
        .content-section {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 2.5rem;
            margin-bottom: 2rem;
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        .game-feature {
            background: linear-gradient(135deg, #f0fff0, #e6ffe6);
            border-left: 4px solid var(--primary-green);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .key-point {
            background-color: #ffffe0;
            border: 1px solid var(--accent-yellow);
            border-radius: 8px;
            padding: 1.2rem;
            margin: 1.2rem 0;
        }
        .img-container {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            margin: 2rem 0;
            transition: transform 0.4s ease;
        }
        .img-container:hover {
            transform: scale(1.02);
        }
        .fact-box {
            background: linear-gradient(135deg, #e0f7e9, #c8f0d5);
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border: 1px dashed var(--secondary-green);
        }
        .table-of-contents {
            background: linear-gradient(135deg, #f5fff5, #e8f8e8);
            border-radius: 10px;
            padding: 1.8rem;
            margin: 2rem 0;
            border: 2px solid var(--light-green);
        }
        .table-of-contents ul {
            columns: 2;
            padding-left: 1.5rem;
        }
        .table-of-contents li {
            margin-bottom: 0.8rem;
            transition: all 0.3s ease;
        }
        .table-of-contents li:hover {
            transform: translateX(5px);
        }
        .table-of-contents a {
            color: var(--dark-green);
            text-decoration: none;
            font-weight: 600;
        }
        .table-of-contents a:hover {
            color: var(--primary-green);
            text-decoration: underline;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        footer {
            background: linear-gradient(135deg, var(--dark-green), #1e6b47);
            color: white;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        @media (max-width: 768px) {
            .table-of-contents ul {
                columns: 1;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .content-section {
                padding: 1.5rem;
            }
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary-green);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            background: var(--dark-green);
            transform: translateY(-5px);
            color: white;
        }
        .rating-stars {
            color: var(--accent-yellow);
            font-size: 1.2rem;
        }
        .environment-badge {
            display: inline-block;
            background: var(--primary-green);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin: 0 0.3rem 0.5rem 0;
        }