Heart Dynamics: A Fluid Visualization Masterpiece

:root {   --subject: "$fluid_system"; /* Heart valve, hydraulic pump, carburetor, coolant system */   --flow_state: "Laminar / Turbulent / Cavitating"; }  # primary_render {   style: "Transparent/translucent technical cutaway";   geometry: "Crystal-clear acrylic aesthetic showing internal passages";   material: "Frosted glass with selective transparency revealing flow paths"; }  # fluid_particle_field {   visualization: "CFD particle trace rendering";    particle_colors: "     Velocity-based gradient:     0-2 m/s: Deep blue (slow/stagnant)     2-5 m/s: Cyan→Green (optimal)     5-10 m/s: Yellow→Orange (high velocity)     >10 m/s: Red with trailing white streaks (critical/turbulent)   ";    particle_density: "Higher density in complex flow regions (valves, restrictors, bends)";   motion_blur: "Streak length proportional to local velocity"; }  # pressure_zones {   overlay: "Color-coded pressure field contours";   high_pressure: "Red zones with PSI readings";   low_pressure: "Blue zones, cavitation risk indicators";   pressure_differential_arrows: "Vector field showing force magnitudes"; }  # data_annotations {   flow_rate_indicators: "Liters/min or GPM at key measurement points";   reynolds_number: "Displayed at transitions (laminar→turbulent prediction)";   vortex_identification: "Swirl indicators with rotation speed (RPM) in eddy zones";   efficiency_metrics: "Percentage losses at bends, restrictions, surface friction"; }  # lighting {   style: "Volumetric rendering - fluid appears to emit soft glow based on velocity/energy";   caustics: "Light refracting through fluid creating dancing patterns on internal surfaces"; }