:root {
            --primary-color: #ff6b35;
            --secondary-color: #f7931e;
            --accent-color: #2ecc71;
            --text-dark: #2c3e50;
            --text-light: #7f8c8d;
            --bg-light: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: #fff;
        }
        .logo-text {
            font-family: 'Georgia', serif;
            font-weight: bold;
            color: var(--primary-color);
            font-size: 2.2rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .nav-link {
            font-weight: 500;
            color: var(--text-dark);
            transition: all 0.3s ease;
            border-bottom: 2px solid transparent;
        }
        .nav-link:hover, .nav-link:focus {
            color: var(--primary-color);
            border-bottom: 2px solid var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 4rem 0;
            border-radius: 0 0 30px 30px;
            margin-bottom: 3rem;
        }
        h1, h2, h3 {
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-color);
            margin-top: 2.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: rgba(255, 107, 53, 0.1);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .key-point {
            font-weight: bold;
            color: var(--primary-color);
        }
        .game-image {
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
            margin: 2rem 0;
        }
        .game-image:hover {
            transform: translateY(-5px);
        }
        .content-section {
            padding: 2rem 0;
        }
        .rule-box {
            background-color: var(--bg-light);
            border-radius: 12px;
            padding: 2rem;
            margin: 1.5rem 0;
            border-left: 5px solid var(--accent-color);
            transition: all 0.3s ease;
        }
        .rule-box:hover {
            transform: translateX(10px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .strategy-tip {
            background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
            border-radius: 12px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border: 1px solid #a5d6a7;
        }
        footer {
            background-color: var(--text-dark);
            color: white;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            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;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .logo-text {
                font-size: 1.8rem;
            }
            .hero-section {
                padding: 2.5rem 0;
            }
        }
        .cultural-note {
            background: linear-gradient(135deg, #fff3e0, #ffecb3);
            border-radius: 12px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border: 1px solid #ffd54f;
        }
        .emoji-divider {
            text-align: center;
            font-size: 2rem;
            margin: 2rem 0;
            color: var(--primary-color);
        }