Tweak animated globe hero: camera angle, speed, styling

[rdhyee]

The animated rotating globe on the homepage (PR #69) is a first pass. Capture tooling is in tools/ (PR pending).

Known tweaks needed

• Globe sits slightly low in frame — adjust camera latitude or pitch
• Rotation speed may need further adjustment (currently 15s/loop)
• Consider starting view: currently Atlantic-centered, could start Pacific or centered on a data-rich region
• Point colors match the progressive globe but could be refined
• File size is 3.8 MB — acceptable but could be smaller with fewer frames or lower quality
• Consider adding a subtle "click to explore" overlay text

How to re-capture

```bash
python -m http.server 8765 --directory tools/
python tools/capture_globe_rotation.py [--duration 15] [--frames 120] [--quality 40]
cp /tmp/isamples_globe.webp assets/isamples_globe.webp
```

Related

• PR Replace static hero with animated rotating globe #69 — original animated globe
• rotating globe on home page #55 — original request (closed)