:root {
            --primary-color: #8B4513;
            --secondary-color: #D2691E;
            --accent-color: #FFD700;
            --dark-bg: #2F4F4F;
            --light-text: #F5F5DC;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #1a2f1a 0%, #2c5530 100%);
            color: var(--light-text);
            line-height: 1.7;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-color) !important;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .nav-link {
            color: var(--light-text) !important;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--accent-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1200x600') center/cover no-repeat;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        h1 {
            color: var(--accent-color);
            font-size: 3rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.7);
        }
        h2 {
            color: var(--secondary-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
            margin: 40px 0 20px;
        }
        h3 {
            color: var(--light-text);
            margin: 30px 0 15px;
        }
        .content-section {
            background-color: rgba(47, 79, 79, 0.8);
            border-radius: 10px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        .game-feature {
            background-color: rgba(139, 69, 19, 0.2);
            border-left: 4px solid var(--accent-color);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .img-fluid {
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.5);
            margin: 20px 0;
            transition: transform 0.3s ease;
        }
        .img-fluid:hover {
            transform: scale(1.02);
        }
        .key-point {
            background-color: rgba(210, 105, 30, 0.2);
            padding: 15px;
            border-radius: 8px;
            margin: 15px 0;
        }
        .table-of-contents {
            background-color: rgba(47, 79, 79, 0.9);
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
        }
        .table-of-contents ul {
            list-style-type: none;
            padding-left: 0;
        }
        .table-of-contents li {
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }
        .table-of-contents li:before {
            content: "▶";
            position: absolute;
            left: 0;
            color: var(--accent-color);
        }
        .table-of-contents a {
            color: var(--light-text);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .table-of-contents a:hover {
            color: var(--accent-color);
        }
        footer {
            background-color: var(--dark-bg);
            padding: 30px 0;
            margin-top: 50px;
            border-top: 3px solid var(--accent-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            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;
            font-size: 1.5rem;
            box-shadow: 0 3px 10px rgba(0,0,0,0.3);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            background-color: var(--accent-color);
            color: var(--dark-bg);
            transform: translateY(-5px);
        }
        .highlight {
            background-color: rgba(255, 215, 0, 0.2);
            padding: 2px 5px;
            border-radius: 3px;
            font-weight: bold;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            .hero-section {
                padding: 60px 0;
            }
            .content-section {
                padding: 20px;
            }
        }