body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF6B35; text-align: center; border-bottom: 3px solid #FF6B35; padding-bottom: 10px; }
        h2 { color: #4A90E2; margin-top: 30px; }
        h3 { color: #27AE60; }
        .logo { font-size: 28px; font-weight: bold; color: #FF6B35; text-align: center; margin: 20px 0; }
        .nav { background: #f8f8f8; padding: 10px; display: flex; justify-content: space-around; flex-wrap: wrap; }
        .mobile-nav-btn { display: none; background: #FF6B35; color: white; padding: 10px; border-radius: 5px; }
        .content { margin-top: 20px; }
        .download-btn, .login-btn { display: block; margin: 20px auto; padding: 15px 30px; font-size: 18px; border-radius: 5px; text-align: center; }
        .download-btn { background: #27AE60; color: white; }
        .login-btn { background: #4A90E2; color: white; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .footer { margin-top: 50px; padding: 20px; background: #f0f0f0; text-align: center; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-btn { display: block; }
        }