body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; position: fixed; bottom: 0; width: 100%; background: #1a73e8; color: white; padding: 10px; text-align: center; }
            .toggle-btn { background: #0d47a1; color: white; border: none; padding: 10px; width: 100%; }
        }
        h1 { color: #1a73e8; border-bottom: 2px solid #e0e0e0; padding-bottom: 10px; }
        h2 { color: #0d47a1; margin-top: 30px; }
        h3 { color: #1565c0; }
        .download-btn { background: #4caf50; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; margin: 15px 0; display: inline-block; }
        .login-btn { background: #2196f3; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; margin: 15px 10px; display: inline-block; }
        .game-image { max-width: 100%; height: auto; margin: 20px 0; }
        .tag { background: #e0e0e0; padding: 5px 10px; margin: 5px; display: inline-block; border-radius: 3px; }
        .copyright { margin-top: 50px; padding: 20px 0; text-align: center; border-top: 1px solid #e0e0e0; }