Sci-Fi World Logic Builder

Help me build a logically consistent sci-fi world.

Subgenre: [HARD SF/SPACE OPERA/CYBERPUNK/POST-APOCALYPTIC/OTHER]
Key technology/concept: [MAIN SCI-FI ELEMENT]
Time period: [WHEN IT'S SET]
Scope: [EARTH/SOLAR SYSTEM/GALAXY/OTHER]

Build the sci-fi world:

1. CORE TECHNOLOGY/SCIENCE
- How it works (plausible explanation)
- Limitations and costs
- Who has access
- Second-order effects on society

2. EXTRAPOLATION
- How this tech changed economics
- Political implications
- Social structures that evolved
- What problems it created
- What old problems it solved

3. DAILY LIFE
- How ordinary people live
- Common tech vs. rare tech
- What's still the same as today
- New cultural norms

4. CONFLICT SOURCES
- Resource scarcity
- Tech inequality
- Ideological divisions
- External threats
- Unintended consequences

5. INTERNAL CONSISTENCY
- Rules that can't be broken
- Questions readers might ask
- Potential plot holes to address
- What this world CAN'T have

Focus on elements relevant to my story about: [STORY FOCUS]