223015b:
- add klausur styles to termin-3, 4, 5
- consistent styles across all 6 termine
223015c:
- h1: darker raspberry (#a02060)
- h2: dark gray almost black (#1f2937)
- section.invert h1: white
- consistent styles across all 3 termine
also:
- add squoosh link and QR code
- update video title to "RIIIIIIIESIG"
- replace i-frame diagram with canon image
