Three-color trend line indicator integrates LWMA, parabolic SAR and median channel, and constructs a multi-dimensional signal system with red/green/yellow colors: red and green double rails mark the boundaries of long/short trend, and yellow central axis warns of oscillating market; equipped with "Dynamic Bandwidth Compensation" to automatically expand the channel tolerance space, and "Node Retrospective Verification" filtering. 80% false breakout, 0.5 seconds to trigger the three-color switching alarm. Supporting full-cycle parameter self-adaptation, M1 captures short-term inflection points at high speed, and D1 accurately frames the swing space, with the real-time countdown and intensity value display on the right panel, it provides a "traffic-light early warning system" for trend-tracking and high-frequency trading, redefining the dimensions of intelligent trading.