:root {
            --primary-color: #FF9933;
            --secondary-color: #138808;
            --accent-color: #000080;
            --text-color: #333333;
            --light-bg: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #ffffff;
        }
        .logo-text {
            font-family: 'Arial Rounded MT Bold', 'Arial', sans-serif;
            font-weight: 800;
            font-size: 2.2rem;
            color: var(--primary-color);
            text-shadow: 2px 2px 0px var(--secondary-color);
            letter-spacing: 1px;
        }
        .logo-text span {
            color: var(--accent-color);
        }
        .nav-custom {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .nav-link {
            color: white !important;
            font-weight: 600;
            padding: 0.8rem 1.2rem !important;
            transition: all 0.3s ease;
            border-radius: 6px;
        }
        .nav-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(255, 153, 51, 0.9), rgba(19, 136, 8, 0.8)), url('https://via.placeholder.com/1600x900') center/cover no-repeat;
            color: white;
            padding: 5rem 0;
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title {
            color: var(--accent-color);
            border-left: 5px solid var(--primary-color);
            padding-left: 1rem;
            margin: 2.5rem 0 1.5rem;
            font-weight: 700;
        }
        .content-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
            padding: 2rem;
            margin-bottom: 2rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--primary-color);
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.12);
        }
        .key-point {
            background-color: var(--light-bg);
            border-left: 4px solid var(--secondary-color);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .game-feature {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            padding: 0.8rem;
            background: #f8f9fa;
            border-radius: 8px;
        }
        .game-feature i {
            color: var(--primary-color);
            margin-right: 1rem;
            font-size: 1.5rem;
        }
        .img-fluid {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
        .img-fluid:hover {
            transform: scale(1.02);
        }
        .highlight {
            background: linear-gradient(120deg, var(--primary-color) 0%, var(--primary-color) 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 88%;
            font-weight: 700;
            padding: 0.1rem 0.2rem;
        }
        footer {
            background: linear-gradient(135deg, var(--accent-color), #000050);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary-color);
            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(--secondary-color);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .logo-text {
                font-size: 1.8rem;
            }
            .hero-section {
                padding: 3rem 0;
            }
            .content-card {
                padding: 1.5rem;
            }
        }