diff --git a/d2compiler/compile_test.go b/d2compiler/compile_test.go
index 83ba27c33..f6518d0fa 100644
--- a/d2compiler/compile_test.go
+++ b/d2compiler/compile_test.go
@@ -3193,6 +3193,54 @@ hi: ${x}
 					assert.Equal(t, "im a var", g.Objects[0].Label.Value)
 				},
 			},
+			{
+				name: "style",
+				run: func(t *testing.T) {
+					g := assertCompile(t, `
+vars: {
+  primary-color: red
+}
+hi: {
+  style.fill: ${primary-color}
+}
+`, "")
+					assert.Equal(t, 1, len(g.Objects))
+					assert.Equal(t, "red", g.Objects[0].Style.Fill.Value)
+				},
+			},
+			{
+				name: "number",
+				run: func(t *testing.T) {
+					g := assertCompile(t, `
+vars: {
+	columns: 2
+}
+hi: {
+	grid-columns: ${columns}
+	x
+}
+`, "")
+					assert.Equal(t, "2", g.Objects[0].GridColumns.Value)
+				},
+			},
+			{
+				name: "nested",
+				run: func(t *testing.T) {
+					g := assertCompile(t, `
+vars: {
+	colors: {
+    primary: {
+      button: red
+    }
+  }
+}
+hi: {
+  style.fill: ${colors.primary.button}
+}
+`, "")
+					assert.Equal(t, "red", g.Objects[0].Style.Fill.Value)
+				},
+			},
 			{
 				// TODO: text before/after substitutions
 				name: "combined",
diff --git a/testdata/d2compiler/TestCompile2/vars/basic/nested.exp.json b/testdata/d2compiler/TestCompile2/vars/basic/nested.exp.json
new file mode 100644
index 000000000..b0bc434b4
--- /dev/null
+++ b/testdata/d2compiler/TestCompile2/vars/basic/nested.exp.json
@@ -0,0 +1,310 @@
+{
+  "graph": {
+    "name": "",
+    "isFolderOnly": false,
+    "ast": {
+      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,0:0:0-11:0:112",
+      "nodes": [
+        {
+          "map_key": {
+            "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,1:0:1-7:1:64",
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,1:0:1-1:4:5",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,1:0:1-1:4:5",
+                    "value": [
+                      {
+                        "string": "vars",
+                        "raw_string": "vars"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "primary": {},
+            "value": {
+              "map": {
+                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,1:6:7-7:1:64",
+                "nodes": [
+                  {
+                    "map_key": {
+                      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,2:1:10-6:3:62",
+                      "key": {
+                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,2:1:10-2:7:16",
+                        "path": [
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,2:1:10-2:7:16",
+                              "value": [
+                                {
+                                  "string": "colors",
+                                  "raw_string": "colors"
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      },
+                      "primary": {},
+                      "value": {
+                        "map": {
+                          "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,2:9:18-6:3:62",
+                          "nodes": [
+                            {
+                              "map_key": {
+                                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,3:4:24-5:5:58",
+                                "key": {
+                                  "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,3:4:24-3:11:31",
+                                  "path": [
+                                    {
+                                      "unquoted_string": {
+                                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,3:4:24-3:11:31",
+                                        "value": [
+                                          {
+                                            "string": "primary",
+                                            "raw_string": "primary"
+                                          }
+                                        ]
+                                      }
+                                    }
+                                  ]
+                                },
+                                "primary": {},
+                                "value": {
+                                  "map": {
+                                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,3:13:33-5:5:58",
+                                    "nodes": [
+                                      {
+                                        "map_key": {
+                                          "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,4:6:41-4:17:52",
+                                          "key": {
+                                            "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,4:6:41-4:12:47",
+                                            "path": [
+                                              {
+                                                "unquoted_string": {
+                                                  "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,4:6:41-4:12:47",
+                                                  "value": [
+                                                    {
+                                                      "string": "button",
+                                                      "raw_string": "button"
+                                                    }
+                                                  ]
+                                                }
+                                              }
+                                            ]
+                                          },
+                                          "primary": {},
+                                          "value": {
+                                            "unquoted_string": {
+                                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,4:14:49-4:17:52",
+                                              "value": [
+                                                {
+                                                  "string": "red",
+                                                  "raw_string": "red"
+                                                }
+                                              ]
+                                            }
+                                          }
+                                        }
+                                      }
+                                    ]
+                                  }
+                                }
+                              }
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  }
+                ]
+              }
+            }
+          }
+        },
+        {
+          "map_key": {
+            "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,8:0:65-10:1:111",
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,8:0:65-8:2:67",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,8:0:65-8:2:67",
+                    "value": [
+                      {
+                        "string": "hi",
+                        "raw_string": "hi"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "primary": {},
+            "value": {
+              "map": {
+                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,8:4:69-10:1:111",
+                "nodes": [
+                  {
+                    "map_key": {
+                      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:2:73-9:38:109",
+                      "key": {
+                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:2:73-9:12:83",
+                        "path": [
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:2:73-9:7:78",
+                              "value": [
+                                {
+                                  "string": "style",
+                                  "raw_string": "style"
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:8:79-9:12:83",
+                              "value": [
+                                {
+                                  "string": "fill",
+                                  "raw_string": "fill"
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      },
+                      "primary": {},
+                      "value": {
+                        "substitution": {
+                          "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:14:85-9:38:109",
+                          "spread": false,
+                          "path": [
+                            {
+                              "unquoted_string": {
+                                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:16:87-9:22:93",
+                                "value": [
+                                  {
+                                    "string": "colors",
+                                    "raw_string": "colors"
+                                  }
+                                ]
+                              }
+                            },
+                            {
+                              "unquoted_string": {
+                                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:23:94-9:30:101",
+                                "value": [
+                                  {
+                                    "string": "primary",
+                                    "raw_string": "primary"
+                                  }
+                                ]
+                              }
+                            },
+                            {
+                              "unquoted_string": {
+                                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,9:31:102-9:37:108",
+                                "value": [
+                                  {
+                                    "string": "button",
+                                    "raw_string": "button"
+                                  }
+                                ]
+                              }
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  }
+                ]
+              }
+            }
+          }
+        }
+      ]
+    },
+    "root": {
+      "id": "",
+      "id_val": "",
+      "attributes": {
+        "label": {
+          "value": ""
+        },
+        "labelDimensions": {
+          "width": 0,
+          "height": 0
+        },
+        "style": {},
+        "near_key": null,
+        "shape": {
+          "value": ""
+        },
+        "direction": {
+          "value": ""
+        },
+        "constraint": null
+      },
+      "zIndex": 0
+    },
+    "edges": null,
+    "objects": [
+      {
+        "id": "hi",
+        "id_val": "hi",
+        "references": [
+          {
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,8:0:65-8:2:67",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/nested.d2,8:0:65-8:2:67",
+                    "value": [
+                      {
+                        "string": "hi",
+                        "raw_string": "hi"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "key_path_index": 0,
+            "map_key_edge_index": -1
+          }
+        ],
+        "attributes": {
+          "label": {
+            "value": "hi"
+          },
+          "labelDimensions": {
+            "width": 0,
+            "height": 0
+          },
+          "style": {
+            "fill": {
+              "value": "red"
+            }
+          },
+          "near_key": null,
+          "shape": {
+            "value": "rectangle"
+          },
+          "direction": {
+            "value": ""
+          },
+          "constraint": null
+        },
+        "zIndex": 0
+      }
+    ]
+  },
+  "err": null
+}
diff --git a/testdata/d2compiler/TestCompile2/vars/basic/number.exp.json b/testdata/d2compiler/TestCompile2/vars/basic/number.exp.json
new file mode 100644
index 000000000..b9898d320
--- /dev/null
+++ b/testdata/d2compiler/TestCompile2/vars/basic/number.exp.json
@@ -0,0 +1,282 @@
+{
+  "graph": {
+    "name": "",
+    "isFolderOnly": false,
+    "ast": {
+      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,0:0:0-8:0:60",
+      "nodes": [
+        {
+          "map_key": {
+            "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,1:0:1-3:1:22",
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,1:0:1-1:4:5",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,1:0:1-1:4:5",
+                    "value": [
+                      {
+                        "string": "vars",
+                        "raw_string": "vars"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "primary": {},
+            "value": {
+              "map": {
+                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,1:6:7-3:1:22",
+                "nodes": [
+                  {
+                    "map_key": {
+                      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,2:1:10-2:11:20",
+                      "key": {
+                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,2:1:10-2:8:17",
+                        "path": [
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,2:1:10-2:8:17",
+                              "value": [
+                                {
+                                  "string": "columns",
+                                  "raw_string": "columns"
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      },
+                      "primary": {},
+                      "value": {
+                        "number": {
+                          "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,2:10:19-2:11:20",
+                          "raw": "2",
+                          "value": "2"
+                        }
+                      }
+                    }
+                  }
+                ]
+              }
+            }
+          }
+        },
+        {
+          "map_key": {
+            "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,4:0:23-7:1:59",
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,4:0:23-4:2:25",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,4:0:23-4:2:25",
+                    "value": [
+                      {
+                        "string": "hi",
+                        "raw_string": "hi"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "primary": {},
+            "value": {
+              "map": {
+                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,4:4:27-7:1:59",
+                "nodes": [
+                  {
+                    "map_key": {
+                      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,5:1:30-5:25:54",
+                      "key": {
+                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,5:1:30-5:13:42",
+                        "path": [
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,5:1:30-5:13:42",
+                              "value": [
+                                {
+                                  "string": "grid-columns",
+                                  "raw_string": "grid-columns"
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      },
+                      "primary": {},
+                      "value": {
+                        "substitution": {
+                          "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,5:15:44-5:25:54",
+                          "spread": false,
+                          "path": [
+                            {
+                              "unquoted_string": {
+                                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,5:17:46-5:24:53",
+                                "value": [
+                                  {
+                                    "string": "columns",
+                                    "raw_string": "columns"
+                                  }
+                                ]
+                              }
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  },
+                  {
+                    "map_key": {
+                      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,6:1:56-6:2:57",
+                      "key": {
+                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,6:1:56-6:2:57",
+                        "path": [
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,6:1:56-6:2:57",
+                              "value": [
+                                {
+                                  "string": "x",
+                                  "raw_string": "x"
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      },
+                      "primary": {},
+                      "value": {}
+                    }
+                  }
+                ]
+              }
+            }
+          }
+        }
+      ]
+    },
+    "root": {
+      "id": "",
+      "id_val": "",
+      "attributes": {
+        "label": {
+          "value": ""
+        },
+        "labelDimensions": {
+          "width": 0,
+          "height": 0
+        },
+        "style": {},
+        "near_key": null,
+        "shape": {
+          "value": ""
+        },
+        "direction": {
+          "value": ""
+        },
+        "constraint": null
+      },
+      "zIndex": 0
+    },
+    "edges": null,
+    "objects": [
+      {
+        "id": "hi",
+        "id_val": "hi",
+        "references": [
+          {
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,4:0:23-4:2:25",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,4:0:23-4:2:25",
+                    "value": [
+                      {
+                        "string": "hi",
+                        "raw_string": "hi"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "key_path_index": 0,
+            "map_key_edge_index": -1
+          }
+        ],
+        "attributes": {
+          "label": {
+            "value": "hi"
+          },
+          "labelDimensions": {
+            "width": 0,
+            "height": 0
+          },
+          "style": {},
+          "near_key": null,
+          "shape": {
+            "value": "rectangle"
+          },
+          "direction": {
+            "value": ""
+          },
+          "constraint": null,
+          "gridColumns": {
+            "value": "2"
+          }
+        },
+        "zIndex": 0
+      },
+      {
+        "id": "x",
+        "id_val": "x",
+        "references": [
+          {
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,6:1:56-6:2:57",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/number.d2,6:1:56-6:2:57",
+                    "value": [
+                      {
+                        "string": "x",
+                        "raw_string": "x"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "key_path_index": 0,
+            "map_key_edge_index": -1
+          }
+        ],
+        "attributes": {
+          "label": {
+            "value": "x"
+          },
+          "labelDimensions": {
+            "width": 0,
+            "height": 0
+          },
+          "style": {},
+          "near_key": null,
+          "shape": {
+            "value": "rectangle"
+          },
+          "direction": {
+            "value": ""
+          },
+          "constraint": null
+        },
+        "zIndex": 0
+      }
+    ]
+  },
+  "err": null
+}
diff --git a/testdata/d2compiler/TestCompile2/vars/basic/style.exp.json b/testdata/d2compiler/TestCompile2/vars/basic/style.exp.json
new file mode 100644
index 000000000..6925d574c
--- /dev/null
+++ b/testdata/d2compiler/TestCompile2/vars/basic/style.exp.json
@@ -0,0 +1,230 @@
+{
+  "graph": {
+    "name": "",
+    "isFolderOnly": false,
+    "ast": {
+      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,0:0:0-7:0:71",
+      "nodes": [
+        {
+          "map_key": {
+            "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,1:0:1-3:1:31",
+            "key": {
+              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,1:0:1-1:4:5",
+              "path": [
+                {
+                  "unquoted_string": {
+                    "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,1:0:1-1:4:5",
+                    "value": [
+                      {
+                        "string": "vars",
+                        "raw_string": "vars"
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "primary": {},
+            "value": {
+              "map": {
+                "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,1:6:7-3:1:31",
+                "nodes": [
+                  {
+                    "map_key": {
+                      "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,2:2:11-2:20:29",
+                      "key": {
+                        "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,2:2:11-2:15:24",
+                        "path": [
+                          {
+                            "unquoted_string": {
+                              "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,2:2:11-2:15:24",
+                              "value": [
+                                {
+                                  "string": "primary-color",
+                                  "raw_string": "primary-color"
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      },
+                      "primary": {},
+                      "value": {
+                        "unquoted_string": {
+                          "range": "d2/testdata/d2compiler/TestCompile2/vars/basic/style.d2,2:17:26-2:20:29",
+                          "value": [
+                            {
+                              "string": "red",
+                              "raw_string": "red"
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  }
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