problem 1.2 b'

utils/boxes.typ

@@ -0,0 +1,38 @@
+#let infobox(
+  body,
+  title: none,
+  stroke-color: black,
+  fill-color: luma(245),
+  border-width: 1pt,
+  radius: 4pt,
+  padding: 8pt,
+) = {
+  block(
+    width: 100%,
+    stroke: (paint: stroke-color, thickness: border-width),
+    fill: fill-color,
+    radius: radius,
+    inset: padding,
+  )[
+    #if title != none [
+      *#title*\
+    ]
+    #body
+  ]
+}
+
+#let problembox(body, title: none) = infobox(
+  body,
+  title: title,
+  fill-color: aqua.transparentize(80%)
+)
+
+#let answerbox(body, title: none) = infobox(
+  body,title: title, fill-color: red.transparentize(80%)
+)
+
+#let addinfobox(body, title: none) = infobox(
+  body,
+  title: title,
+  fill-color: rgb("#FFB3BF").transparentize(80%)
+)

utils/macros.typ

@@ -0,0 +1,28 @@
+#import "@preview/fletcher:0.5.8" as fletcher
+
+#let CRing = math.bold("CRing")
+#let Open = math.op("Open")
+#let Set = math.bold("Set")
+
+
+#let colim = math.limits(math.op("colim"))
+
+#let cdiagram(..args) = {
+  let named = args.named()
+  // Если spacing не задан явно при вызове, берем дефолтный
+  if "spacing" not in named {
+    named.insert("spacing", (10mm, 7mm))
+  }
+  align(center, fletcher.diagram(..args.pos(), ..named))
+}
+
+// Макрос для инлайн-диаграмм внутри формул
+#let inlinediag(..args) = box(
+  baseline: 50%,
+  fletcher.diagram(
+    spacing: (4mm, 3.5mm),
+    node-inset: 1pt,
+    edge-stroke: 0.6pt,
+    ..args,
+  )
+)