Flame I/O

you have uncovered an ancient arcane device, a four-signal mechanism once used by royal engineers to transmit secret messages across the kingdom. The contraption pulses through three glowing runic beacons and a mystical sensor attuned to the heat of the flame itself, powered by forgotten artificer craft. Scholars believe the sensor captures the essence of temperature, weaving it into the signaling ritual. To unveil the hidden message, you must decipher the encoding of these Quadra signals and understand how the order of light and heat conceals the truth.

Can you decode the Quadra signals and recover the original secret message to reveal the flag?