Ok, so my idea is to make the world medium fantasy-ish, like there is magic that is common just enough to not be incorporated into literally everything, magic goes hand-by-hand with tech and usually fix each other's cons, example: portal gates (like stargate or zaap from wakfu) which is fueled by runes. While tech ranges from simple bow-drill to literal mechanic dragon that looks like davinci's creation, with some gunpowder here and there.
Idea for magic lore is that its part of physics, or, rather, metaphysics, as it works from writing in runic, so wizards aslo speak in runic and also are, technically, are literate, as saying the same thing can lead to different results, like saying in runic "burn this man to ashes" and "Bathe him in flames" leads first case to turn your hands into flamethrower while second makes the target be so engulfed in flames that you can even see the body, its just pure fire.
Also funfact for this world: each sort of spellcaster speaks in their own linguistic style in runic, like wizards, being bookworms, sound like a narrator in a novel, whole sorcerer speaks like a part of a gang in same runic... And mage just speaks broken runic, aka its so lacking in knowledge that he often forgets articles, doesnt know conjugations that he sounds like a -5 int orc - "Me need get this feather that have annoying light presence"