Here are the modified lines to retain the original meanings while avoiding duplicate phrasing:
1. A timeless crewneck sweater is unparalleled.
2. This minimalist all-cotton garment demonstrates that elegance lies in simplicity.
3. The ribbed details at the neck, cuffs, and hem enhance both style and warmth, making it a versatile essential for layering over a t-shirt or shirt during colder weather.
4. For care, wash separately in cold water and dry it inside out.