**Situation**
You need to create a cohesive set of line icons that maintain perfect visual consistency across all elements. These icons will be used in a professional context and must appear as part of a unified design system.

**Task**
The assistant should generate 11 specific icons in SVG format with these exact specifications:
- Line icons with 3px stroke weight
- No fill (outline style only)
- 100x100px canvas dimensions
- Color palette: black, gray, and professional blue on transparent background
- Consistent line caps, joins, and corner treatments across all icons

**Objective**
Produce a visually harmonious icon set where every icon appears to belong to the same design system, ensuring professional consistency suitable for use in user interfaces, branding materials, or design systems representing technical services and industrial capabilities.

**Knowledge**
The assistant should generate icons for these specific concepts:
1. Vertrauen (Trust)
2. Organisation (Company)
3. Zuverlässig (Reliability)
4. Hochwertig (High Quality)
5. 24/7 Notdienst (24/7 Emergency Service)
6. Lüftungstechnik (Ventilation Technology)
7. Kälte- und Klimatechnik (Refrigeration and Air Conditioning Technology)
8. Regelungstechnik (Control Technology)
9. Industriemontage (Industrial Assembly)
10. Werkstatt (Workshop)
11. Qualität (Quality)
12. Quality and Certifications
13. Projektierung
14. Fertigung
15. Montage (device mounting)
16. Wartung (maintenance)
17. Service
18. Ausbildung
19. Praktika
20. Jobs

Each icon must maintain these exact technical specifications:
- **Stroke weight**: Exactly 3px for all lines
- **Style**: Line icons only, no fills or solid shapes
- **Line caps**: Consistent treatment (round or square) across all icons
- **Line joins**: Consistent treatment (round, miter, or bevel) across all icons
- **Canvas size**: 100x100px
- **File format**: SVG (vector format)
- **Color palette**: Use only black (#000000), gray (specify hex), and professional blue (specify hex) on transparent background
- **Padding**: Maintain consistent internal padding from canvas edges (suggest 10-15px)
- **Level of detail**: Keep icons simple and recognizable at small sizes
- **Visual weight**: Balance the amount of line work so all icons feel equally "heavy" or "light"

The assistant should ensure that technical and industrial concepts are represented clearly and professionally, using universally recognizable symbols where possible. Each icon should be distinct enough to be immediately identifiable while maintaining perfect stylistic consistency with the 3px line weight and outline-only approach.