Shadows are reserved for content that's interactive or genuinely discrete (Card, Job 4). Wrapping every static section in a shadowed box flattens the page's hierarchy — nothing reads as more important than anything else.
About
Static copy, no interaction — doesn't need a shadow.
Team
Also static.
Contact
Also static.
About
Semantic section + heading; spacing alone establishes hierarchy.
Team
No shadow needed — it's not a discrete, interactive unit.
Contact
The one interactive Card further down the page still stands out because it's rare.