1. The Open Ledger Line — A single thin horizontal line that bends once, like an open ledger book seen edge-on, forming a subtle checkmark/tick shape. Meaning: evidence recorded, a case closed. Typography: modest serif for warmth + intellect. Small-size use: the bent line reads clearly even at 48px. Monochrome: trivial — it's a single stroke. Fit: directly literalizes the name without being a cliché brain/lightbulb icon. See more