body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background-color: #f5f5dc; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 28px; font-weight: bold; color: #ff6600; text-align: center; margin: 20px 0; }
        .mobile-nav { display: none; text-align: center; background: #333; color: white; padding: 10px; cursor: pointer; }
        .nav { background: #333; padding: 10px; }
        .nav ul { list-style: none; padding: 0; margin: 0; text-align: center; }
        .nav ul li { display: inline; margin: 0 15px; }
        .nav ul li a { color: white; text-decoration: none; }
        h1 { color: #ff6600; font-size: 2.5em; }
        h2 { color: #e67e22; font-size: 2em; }
        h3 { color: #d35400; font-size: 1.5em; }
        .download-btn, .login-btn { display: inline-block; background: #ff6600; color: white; padding: 10px 20px; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        .image-container { text-align: center; margin: 20px 0; }
        .image-container img { max-width: 100%; height: auto; }
        footer { background: #333; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        @media (max-width: 768px) {
            .nav ul li { display: block; margin: 5px 0; }
            .mobile-nav { display: block; }
            .nav { display: none; }
            .nav.active { display: block; }
        }