# Neo-Veridia Night Transit Maproom

Create a single-file interactive maproom and cartographic explorer focusing on the metropolitan mobility of "Neo-Veridia", a sprawling futuristic city. 

The interface should feel like a late-night transit control center. It must use an SVG or Canvas-based custom map.

## Core Requirements

1. **Visual Style**: Dark mode, "night transit" aesthetic. Glowing lines, high contrast, clean typography (sans-serif), feeling like an operational control dashboard.
2. **Map System**:
   - Pan and zoom capabilities (mouse drag, scroll wheel, and touch support).
   - Three toggleable layers:
     - **Transit Lines**: The subway/rail network (multiple colored lines).
     - **Crowd Density**: Heatmap-style glowing areas representing pedestrian traffic.
     - **Incidents/Delays**: Alert nodes showing ongoing issues.
3. **Interactivity**:
   - Clickable stations/nodes to open a location detail panel showing station name, active lines, and current status.
   - Filter controls to toggle layers on and off.
   - Legend explaining the map symbols.
4. **Narrative/Guided Route**:
   - A "Night Shift Log" timeline or guided tour mode that steps through key locations and incidents (e.g., "02:00 - Power fluctuation at Sector 4", "03:15 - Express train rerouted"). Selecting a log entry should pan the map to that location and highlight it.
5. **State Management**:
   - Track and visually indicate which stations the user has "inspected" (visited locations memory).
6. **Technical Constraints**:
   - Single `index.html` file.
   - Vanilla HTML, CSS, and JavaScript.
   - No external images or assets.
   - Fully responsive for desktop and mobile (ensure pan/zoom doesn't clash with page scrolling).