I have a form where there is a field with two options. Depending on which option is chosen, there are 1-4 additional fields that need to be filled out, as shown:
I think there are two problems here: one is that the horizontal lines grouping the fields end up making the radio buttons look like they are not related; and the second is that even without the horizontal lines, the related fields end up not looking like they are associated with the radio button - particularly for the second radio button.
Is there a pattern for indenting dependent fields? And if so, should they be indented so that they are aligned with the left edge of the radio button, or with the left edge of its label?