Combine the graham cracker crumbs and melted butter in a bowl, stirring until the mixture is evenly coated and resembles wet sand.
Press the crumb mixture firmly into the bottom of a 9-inch springform pan, creating an even crust. Chill in the fridge for at least 15 minutes to set.
In a large mixing bowl, beat the softened cream cheese with sugar until smooth and creamy, about 2-3 minutes, listening for a faint squeak as the mixture becomes fluffy.
Add vanilla extract and lemon juice to the cream cheese mixture, blending until well incorporated and slightly glossy.
In a chilled bowl, whip the heavy cream with an electric mixer until soft peaks form, which should take about 3-4 minutes and produce a light, airy texture.
Gently fold the whipped cream into the cream cheese mixture using a spatula, starting with a small amount to lighten it, then carefully combining everything without deflating the fluff.
Pour the creamy filling onto the chilled crust, spreading it evenly with a spatula and smoothing the top for a polished look.
Cover the pan with plastic wrap and refrigerate for at least 4 hours, preferably overnight, until the filling is firm and well set.
Once chilled, gently remove the sides of the springform pan, revealing a glossy, smooth cheesecake with a firm yet tender texture.
Slice and serve the cheesecake cold, enjoying its creamy, airy texture with a slight tang from the cream cheese and lemon.
