body { font-family: 'Arial', sans-serif; line-height: 1.6; margin: 0; padding: 0; color: #333; background-color: #f5f9ff; }
        .header { background-color: #2a5caa; color: white; padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: bold; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        .nav { display: flex; gap: 15px; }
        .nav a { color: white; text-decoration: none; }
        .mobile-toggle { display: none; cursor: pointer; }
        .container { max-width: 1200px; margin: 20px auto; padding: 0 20px; }
        h1 { color: #2a5caa; margin-bottom: 20px; }
        h2 { color: #4a7bcc; margin-top: 30px; }
        h3 { color: #6a9cff; margin-top: 25px; }
        .btn { display: inline-block; background-color: #ff6b35; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; margin: 10px 0; }
        .download-section, .login-section { background-color: #e8f4ff; padding: 20px; border-radius: 8px; margin: 20px 0; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        .footer { background-color: #2a5caa; color: white; text-align: center; padding: 20px; margin-top: 40px; }
        .tags { margin: 20px 0; }
        .tag { display: inline-block; background-color: #4a7bcc; color: white; padding: 5px 10px; border-radius: 20px; margin: 5px; }
        @media (max-width: 768px) {
            .nav { display: none; flex-direction: column; width: 100%; }
            .nav.active { display: flex; }
            .mobile-toggle { display: block; }
            .header { flex-direction: column; }
        }