せいこう精巧seikou
1.

Characterized by meticulous attention to detail, resulting in an exceptionally well-crafted or intricately designed object or concept.

2.

Exhibiting a level of craftsmanship or artistry that reflects precision and care, often resulting in intricate patterns or structures.

3.

Demonstrating high-quality construction or design, where every minor aspect is thoughtfully considered and executed with skill.

4.

Referring to something which is not only sophisticated in design but also requires a deep level of knowledge or skill to create and appreciate.

Example:

その機械は精巧に出来ているので、すぐ壊れる。