"Create four professional icons for a government insurance platform. The first icon should represent 'insurance' with a simple shield or policy document design. The second icon should depict 'discounts', with a symbol of a percentage sign or a tag showing a price reduction. The third icon should symbolize 'prevention', featuring a health checkup or a safety symbol like a stethoscope or a home safety shield. The fourth icon should represent preventive actions for home safety, such as a smoke detector or a locked door. Use clean, minimalist designs with professional, neutral colors suitable for a government setting."