body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background-color: #f5f9ff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        .header { background-color: #003366; color: white; padding: 15px; text-align: center; position: relative; }
        .header .logo { font-size: 24px; font-weight: bold; text-transform: uppercase; }
        .header .nav { display: flex; justify-content: center; gap: 20px; margin-top: 10px; }
        .header .nav a { color: white; text-decoration: none; }
        .mobile-toggle { display: none; position: absolute; right: 20px; top: 20px; cursor: pointer; }
        .content { padding: 20px 0; }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; margin: 10px 0; background-color: #ff9900; color: white; text-decoration: none; border-radius: 5px; }
        .image-container { text-align: center; margin: 20px 0; }
        .image-container img { max-width: 100%; height: auto; }
        .footer { background-color: #003366; color: white; text-align: center; padding: 15px; }
        h1, h2, h3 { color: #003366; margin-top: 30px; }
        h1 { font-size: 28px; }
        h2 { font-size: 24px; }
        h3 { font-size: 20px; }
        @media (max-width: 768px) {
            .header .nav { display: none; flex-direction: column; }
            .header .nav.active { display: flex; }
            .mobile-toggle { display: block; }
        }