body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; }
        .header { background-color: #FF4500; color: white; padding: 15px; text-align: center; position: relative; }
        .header-logo { font-size: 28px; font-weight: bold; }
        .nav { display: flex; justify-content: center; gap: 20px; margin-top: 10px; }
        .nav a { color: white; text-decoration: none; }
        .mobile-nav-btn { display: none; position: absolute; top: 15px; right: 15px; background: none; border: none; color: white; font-size: 24px; }
        .content { max-width: 1000px; margin: 20px auto; padding: 0 15px; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; margin: 15px 0; background-color: #4CAF50; color: white; text-decoration: none; border-radius: 5px; }
        .login-btn { background-color: #2196F3; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        .footer { background-color: #333; color: white; text-align: center; padding: 15px; margin-top: 30px; }
        h1 { color: #FF4500; margin-bottom: 20px; }
        h2 { color: #2196F3; margin: 25px 0 15px; }
        h3 { color: #4CAF50; margin: 20px 0 10px; }
        @media (max-width: 768px) {
            .nav { display: none; flex-direction: column; }
            .nav.active { display: flex; }
            .mobile-nav-btn { display: block; }
            .header { padding-bottom: 25px; }
        }