Bombing strategy can be even more important in Imperishable Night, but it can also be less important. Since death-bombing is a lot more reliable, it’s easier to try to rely on it. It costs 2 bombs, though, so relying on it too much can eat through your resources too quickly. Getting bombs off when they only use one bomb can make a big difference in having enough left at the end of the game, and planning out when you are most likely to need them can help a lot in that regard. At the same time, if you can capture enough of the spell cards to not need to bomb through that much, you can rely on the death bomb/Last Spell system more heavily, and planning a strategy for bombing becomes less important than other games. Also, if you are going specifically for Spell Card captures, it helps to have the Last Spell system to rely on so you can wait until you are sure you are going to get hit to bomb. Basically, you’re more likely to get a reaction bomb off in time in IN, but you’re also more likely to run out of resources if you try to rely on that.
I think this is the clearest official image I’ve seen of the seals on Ran’s hat (from Bohemian Archive in Japanese Red):
Which, unfortunately, isn’t that clear. If you can read kanji, it might have something legible written on them, but I have no idea if that is the case or not. It doesn’t look like that image is trying particularly hard to match the markings from her official PCB portrait (this one looks more like vertical calligraphy than on the PCB portrait), so I’m not sure that there even are any specific official markings for them. I think Silent Sinner in Blue just draws them as plain rectangles, but I’ll see if I can find any more detailed panels that would show them. There doesn’t appear to be any particular consistency to the markings in the fan art I have saved of her either (I know that doesn’t help copy it when you can’t obscure the details like in a drawing–sorry).