What are the different eras of Sonic the Hedgehog comics, and how do they vary in style?

Sonic comics have gone through several distinct eras. The 'Classic Era' (1993-1997) focused on straightforward adventures with a more lighthearted tone. The 'Modern Era' (1998-2006) introduced darker storylines and more complex characters. The 'Sonic Adventure Era' (2006-2010) reflected the tone of the Sonic Adventure games. Finally, the 'Current Era' (2010-present) has seen a return to more classic-style adventures, though with modern sensibilities.