body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #FF4500; margin: 25px 0 15px; }
        h1 { font-size: 2.2em; border-bottom: 3px solid #FF4500; padding-bottom: 10px; }
        h2 { font-size: 1.8em; }
        h3 { font-size: 1.5em; }
        .nav { background: #FF4500; color: white; padding: 15px; display: flex; justify-content: space-between; align-items: center; }
        .nav a { color: white; text-decoration: none; margin: 0 10px; font-weight: bold; }
        .mobile-nav-btn { display: none; background: white; color: #FF4500; border: none; padding: 8px 12px; cursor: pointer; }
        .content { margin-top: 20px; }
        .download-btn, .login-btn { display: inline-block; background: #FF4500; color: white; padding: 12px 25px; margin: 15px 0; text-decoration: none; border-radius: 5px; font-weight: bold; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border: 2px solid #FF4500; }
        .footer { margin-top: 40px; padding: 20px; background: #333; color: white; text-align: center; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-btn { display: block; }
            .nav-links { display: none; }
            .nav-links.active { display: block; }
            .nav-links a { display: block; margin: 10px 0; }
        }