The name
Theia
Theia was the Greek Titaness of sight and shining light — Euryphaessa, "wide-shining." The Greeks believed we see because the eyes carry a light of their own, and Theia was the goddess who gave that light its brilliance.
She is not the sun and she is not the moon. She is their mother — Helios the sun, Selene the moon, Eos the dawn. Her whole divinity is one idea: she is the reason anything can be seen.
Which is the definition of an assistant, written down three thousand years before anyone needed one. She doesn't do your work and she doesn't take your place. She makes what's in front of you legible.
Why an eclipse
An eclipse is the one moment when Theia's two children stand in a line — the moon crossing the sun, exactly as seen from wherever you happen to be standing.
And here is the part that makes it the right mark: you only see the corona when something covers the glare. The sun's atmosphere streams pearl-white for millions of kilometres every day of your life, and you cannot see a trace of it, because the raw light is too loud. Block the disc, and what was always there becomes visible for two minutes.
The call you missed was always carrying something. The ringing is the glare. She's the shadow that lets you see what it was.
A phone ringing is noise — an unknown number, a bad moment, a decision you didn't want to make. She steps between you and it, not to block you, but to find the one thing inside it that mattered and hand you that instead.
What the mark shows
It isn't a generic circle. It's a specific instant, drawn from a photograph of a real eclipse: third contact — the moment the sun begins to return. The black disc is the moon. The pearl halo with no edge is the corona, brightest where it meets the disc. The apricot arcs are prominences, solar flares standing off the limb — the only part of an eclipse that looks alive. The small blaze at the lower right is the diamond ring: the first sliver of sun coming back.
So the logo is not darkness. It's light returning, with the assistant's silhouette passing across it on her way.
thea and theo
thea
Theia's own name, four letters, said Tia. Apricot prominences — the warm end of the spectrum, the light with a pulse in it.
theo
The same eclipse under a colder sky. Same geometry, same instant, periwinkle flares. Not another product — the same light at a different temperature.
One family, one physics. Nobody has to explain why their assistant is a man or a woman; they pick the light they'd rather have answering.
The family it belongs to
leo is the voice — leo, Hawaiian for voice, the thing that proves you're you. nāmaka is the eyes — nā maka, what watches with you. thea is sight itself, the light by which the other two are possible. Three products, one idea, in two languages.
And the honest footnote: to eclipse someone means to outshine them, and that is the opposite of this. She passes in front, briefly, and moves on. She never takes the light — she makes it survivable.