Make character style definition match text

Select text and press Shift+Alt+Ctrl+C

Select text and press Shift+Option+Command+C

Make paragraph style definition match text

Select text and press Shift+Alt+Ctrl+R

Select text and press Shift+Option+Command+R

Change options without applying style

Shift+Alt+Ctrl-double-click style

Shift+Option+Command-double-click style

Remove style and local formatting

Alt-click paragraph style name

Option-click paragraph style name

Clear overrides from paragraph style

Alt+Shift-click paragraph style name

Option+Shift-click paragraph style name

Show/hide Paragraph and Character Styles panels, respectively

F11, Shift+F11

Command+F11, Command+Shift+F11