body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #d42c2c; margin-top: 30px; }
        h1 { font-size: 2.5em; }
        h2 { font-size: 2em; }
        h3 { font-size: 1.5em; }
        .logo { font-size: 2em; font-weight: bold; color: #d42c2c; text-decoration: none; }
        nav { background: #f8f8f8; padding: 15px; margin-bottom: 20px; }
        nav a { margin: 0 15px; text-decoration: none; color: #333; }
        .mobile-nav { display: none; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn, .login-btn { background: #d42c2c; color: white; padding: 12px 25px; border: none; border-radius: 5px; margin: 15px 0; cursor: pointer; }
        .hidden { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; }
        }