Evolution of the surface Li abundance as a function of T_eff for stars of different initial masses and different initial Fe content. Short horizontal ticks and numbers along the tracks indicate age in Gyr. The dashed horizontal line and surrounding pinkish area show the mean value of the Spite plateau (according to Norris et al. (2023)) and 0.05 dex scatter around it. The reference model is denoted with a four-pointed star.