body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #d32f2f; font-size: 2.5em; text-align: center; }
        h2 { color: #388e3c; border-bottom: 2px solid #ff9800; padding-bottom: 5px; }
        h3 { color: #1976d2; }
        .logo { font-size: 2em; font-weight: bold; color: #d32f2f; text-align: center; margin: 20px 0; }
        nav { background: #f5f5f5; padding: 10px; display: flex; justify-content: space-around; flex-wrap: wrap; }
        nav a { text-decoration: none; color: #333; font-weight: bold; }
        .mobile-menu { display: none; text-align: center; background: #ff9800; color: white; padding: 10px; cursor: pointer; }
        .download-btn, .login-btn { display: block; width: 200px; margin: 20px auto; padding: 15px; text-align: center; background: #388e3c; color: white; text-decoration: none; border-radius: 5px; }
        .image-container { text-align: center; margin: 30px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 50px; }
        @media (max-width: 768px) {
            nav { display: none; }
            .mobile-menu { display: block; }
            .show-menu { display: flex; }
        }