diff --git a/apps/web/src/features/referrals/components/shared/stat-chart-card.tsx b/apps/web/src/features/referrals/components/shared/stat-chart-card.tsx
index 28374e0..34a0b08 100644
--- a/apps/web/src/features/referrals/components/shared/stat-chart-card.tsx
+++ b/apps/web/src/features/referrals/components/shared/stat-chart-card.tsx
@@ -1,4 +1,5 @@
 import { cn } from "@workspace/ui/lib/utils"
+import type { NumericRole } from "@workspace/ui/components/numeric"
 import type { TimePeriod } from "../../hooks/use-referrals-data"
 import { formatUsd } from "@/shared/lib/format"
 
diff --git a/packages/ui/src/components/button.test.tsx b/packages/ui/src/components/button.test.tsx
index b205787..60ff4e5 100644
--- a/packages/ui/src/components/button.test.tsx
+++ b/packages/ui/src/components/button.test.tsx
@@ -1,7 +1,27 @@
 import { describe, it, expect } from "vitest"
-import { render } from "@testing-library/react"
+import { render, screen } from "@testing-library/react"
 import { axe } from "vitest-axe"
-import { Button } from "./button"
+import { Button, buttonVariants } from "./button"
+
+const VARIANTS = [
+  "default",
+  "outline",
+  "secondary",
+  "ghost",
+  "destructive",
+  "link",
+] as const
+
+const SIZES = [
+  "default",
+  "xs",
+  "sm",
+  "lg",
+  "icon",
+  "icon-xs",
+  "icon-sm",
+  "icon-lg",
+] as const
 
 describe("Button accessibility", () => {
   it("has no accessibility violations", async () => {
@@ -26,3 +46,44 @@ describe("Button accessibility", () => {
     expect(results).toHaveNoViolations()
   })
 })
+
+describe("Button variants and sizes", () => {
+  it.each(VARIANTS)("renders the %s variant without violations", async (variant) => {
+    const { container } = render(<Button variant={variant}>Action</Button>)
+    expect(await axe(container)).toHaveNoViolations()
+  })
+
+  it.each(SIZES)("renders the %s size without violations", async (size) => {
+    const isIconSize = size.startsWith("icon")
+    const { container } = render(
+      isIconSize ? (
+        <Button size={size} aria-label="Action">
+          <svg viewBox="0 0 24 24" />
+        </Button>
+      ) : (
+        <Button size={size}>Action</Button>
+      )
+    )
+    expect(await axe(container)).toHaveNoViolations()
+  })
+
+  it("every variant defines default, hover, active, and disabled classes", () => {
+    for (const variant of VARIANTS) {
+      const className = buttonVariants({ variant })
+      expect(className).toMatch(/hover:/)
+      expect(className).toMatch(/active:/)
+    }
+    // disabled + focus-visible states live in the shared base classes.
+    expect(buttonVariants({})).toMatch(/disabled:/)
+    expect(buttonVariants({})).toMatch(/focus-visible:/)
+  })
+
+  it("keeps the icon-only button's accessible name from aria-label, not the icon", () => {
+    render(
+      <Button size="icon" aria-label="Settings">
+        <svg viewBox="0 0 24 24" />
+      </Button>
+    )
+    expect(screen.getByRole("button", { name: "Settings" })).toBeInTheDocument()
+  })
+})
diff --git a/packages/ui/src/components/button.tsx b/packages/ui/src/components/button.tsx
index 1d8948c..e83a3ae 100644
--- a/packages/ui/src/components/button.tsx
+++ b/packages/ui/src/components/button.tsx
@@ -9,16 +9,17 @@ const buttonVariants = cva(
   {
     variants: {
       variant: {
-        default: "bg-primary text-primary-foreground hover:bg-primary/80",
+        default:
+          "bg-primary text-primary-foreground hover:bg-primary/80 active:not-aria-[haspopup]:bg-primary/70",
         outline:
-          "border-border hover:bg-input/50 hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground dark:bg-input/30",
+          "border-border hover:bg-input/50 hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground active:not-aria-[haspopup]:bg-input/70 dark:bg-input/30 dark:active:not-aria-[haspopup]:bg-input/50",
         secondary:
-          "bg-secondary text-secondary-foreground hover:bg-secondary/80 aria-expanded:bg-secondary aria-expanded:text-secondary-foreground",
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80 aria-expanded:bg-secondary aria-expanded:text-secondary-foreground active:not-aria-[haspopup]:bg-secondary/70",
         ghost:
-          "hover:bg-muted hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground dark:hover:bg-muted/50",
+          "hover:bg-muted hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground active:not-aria-[haspopup]:bg-muted/70 dark:hover:bg-muted/50 dark:active:not-aria-[haspopup]:bg-muted/40",
         destructive:
-          "bg-destructive/10 text-destructive hover:bg-destructive/20 focus-visible:border-destructive/40 focus-visible:ring-destructive/20 dark:bg-destructive/20 dark:hover:bg-destructive/30 dark:focus-visible:ring-destructive/40",
-        link: "text-primary underline-offset-4 hover:underline",
+          "bg-destructive/10 text-destructive hover:bg-destructive/20 focus-visible:border-destructive/40 focus-visible:ring-destructive/20 active:not-aria-[haspopup]:bg-destructive/30 dark:bg-destructive/20 dark:hover:bg-destructive/30 dark:focus-visible:ring-destructive/40 dark:active:not-aria-[haspopup]:bg-destructive/40",
+        link: "text-primary underline-offset-4 hover:underline active:not-aria-[haspopup]:text-primary/70",
       },
       size: {
         default:
diff --git a/packages/ui/src/components/loading-button.test.tsx b/packages/ui/src/components/loading-button.test.tsx
new file mode 100644
index 0000000..6da1f84
--- /dev/null
+++ b/packages/ui/src/components/loading-button.test.tsx
@@ -0,0 +1,49 @@
+import { describe, it, expect } from "vitest"
+import { render, screen } from "@testing-library/react"
+import { axe } from "vitest-axe"
+import { LoadingButton } from "./loading-button"
+
+describe("LoadingButton", () => {
+  it("is disabled and aria-busy while loading, with text content", async () => {
+    const { container } = render(
+      <LoadingButton isLoading loadingText="Confirming...">
+        Stake
+      </LoadingButton>
+    )
+    const button = screen.getByRole("button", { name: "Confirming..." })
+    expect(button).toBeDisabled()
+    expect(button).toHaveAttribute("aria-busy", "true")
+    expect(await axe(container)).toHaveNoViolations()
+  })
+
+  it("falls back to children as the loading label when loadingText is omitted", () => {
+    render(<LoadingButton isLoading>Stake</LoadingButton>)
+    expect(screen.getByRole("button", { name: "Stake" })).toBeInTheDocument()
+  })
+
+  it("is not disabled and not aria-busy when not loading", () => {
+    render(<LoadingButton>Stake</LoadingButton>)
+    const button = screen.getByRole("button", { name: "Stake" })
+    expect(button).not.toBeDisabled()
+    expect(button).not.toHaveAttribute("aria-busy")
+  })
+
+  it("keeps the width-reserving spinner slot present (but hidden) when not loading", () => {
+    const { container } = render(<LoadingButton>Stake</LoadingButton>)
+    const slot = container.querySelector('[aria-hidden="true"]')
+    expect(slot).toBeInTheDocument()
+    expect(slot).toHaveClass("invisible")
+  })
+
+  it("supports an icon-only loading button, keeping its accessible name", async () => {
+    const { container } = render(
+      <LoadingButton isLoading size="icon" aria-label="Stake">
+        <svg viewBox="0 0 24 24" />
+      </LoadingButton>
+    )
+    const button = screen.getByRole("button", { name: "Stake" })
+    expect(button).toBeDisabled()
+    expect(button).toHaveAttribute("aria-busy", "true")
+    expect(await axe(container)).toHaveNoViolations()
+  })
+})
diff --git a/packages/ui/src/components/loading-button.tsx b/packages/ui/src/components/loading-button.tsx
index 633e2a7..0755fce 100644
--- a/packages/ui/src/components/loading-button.tsx
+++ b/packages/ui/src/components/loading-button.tsx
@@ -13,6 +13,10 @@ type LoadingButtonProps = ComponentProps<typeof Button> & {
  * Button that owns its own pending presentation: disables itself, flags
  * `aria-busy` and swaps in a spinner. The spinner is `aria-hidden`, so the
  * accessible name is exactly `loadingText` (or the children).
+ *
+ * The spinner sits in a fixed-size slot that's always present (just hidden
+ * via `invisible` when not loading), so entering the loading state never
+ * changes the button's width.
  */
 function LoadingButton({
   isLoading = false,
@@ -30,14 +34,16 @@ function LoadingButton({
       className={cn("gap-1.5", className)}
       {...props}
     >
-      {isLoading ? (
-        <>
-          <Spinner />
-          {loadingText ?? children}
-        </>
-      ) : (
-        children
-      )}
+      <span
+        aria-hidden="true"
+        className={cn(
+          "inline-flex size-3 shrink-0 items-center justify-center",
+          !isLoading && "invisible"
+        )}
+      >
+        {isLoading && <Spinner />}
+      </span>
+      {isLoading ? (loadingText ?? children) : children}
     </Button>
   )
 }
diff --git a/packages/ui/src/components/numeric.tsx b/packages/ui/src/components/numeric.tsx
index 5510237..f457adb 100644
--- a/packages/ui/src/components/numeric.tsx
+++ b/packages/ui/src/components/numeric.tsx
@@ -19,12 +19,12 @@ const numericVariants = cva('font-mono tabular-nums', {
   },
 })
 
-type NumericRole = VariantProps<typeof numericVariants>['role']
+type LegacyNumericRole = VariantProps<typeof numericVariants>['role']
 
 interface NumericProps {
   value: number | null | undefined
   format?: 'usd' | 'token' | 'pct' | 'number'
-  role?: NumericRole
+  role?: LegacyNumericRole
   decimals?: number
   compact?: boolean
   fallback?: string
@@ -63,6 +63,69 @@ function formatNumber(value: number): string {
   return value.toLocaleString('en-US')
 }
 
+/**
+ * Semantic tone for a numeric value already formatted by the caller.
+ *
+ * Unlike `Numeric` below, this primitive does not format or round its
+ * children — it only supplies the tabular-figure font treatment and the
+ * approved positive/negative/warning/accent/muted tones (DS-012).
+ */
+const numericTextVariants = cva("font-mono tabular-nums slashed-zero", {
+  variants: {
+    role: {
+      neutral: "text-foreground",
+      positive: "text-success",
+      negative: "text-destructive",
+      warning: "text-warning",
+      accent: "text-primary",
+      muted: "text-muted-foreground",
+    },
+    size: {
+      "2xs": "text-[0.625rem] leading-4",
+      xs: "text-[0.6875rem] leading-4",
+      sm: "text-xs leading-5",
+      md: "text-[0.8125rem] leading-5",
+      base: "text-sm leading-5",
+      lg: "text-base leading-6",
+    },
+    weight: {
+      normal: "font-normal",
+      medium: "font-medium",
+      semibold: "font-semibold",
+      bold: "font-bold",
+    },
+  },
+  defaultVariants: {
+    role: "neutral",
+    size: "base",
+    weight: "normal",
+  },
+})
+
+type NumericRole = VariantProps<typeof numericTextVariants>['role']
+
+type NumericTextProps = React.ComponentProps<'span'> &
+  VariantProps<typeof numericTextVariants>
+
+function NumericText({ role, size, weight, className, ...props }: NumericTextProps) {
+  return (
+    <span
+      data-slot="numeric-text"
+      className={cn(numericTextVariants({ role, size, weight }), className)}
+      {...props}
+    />
+  )
+}
+
+/** Derives a positive/negative/neutral role from a signed value's sign. */
+function numericRoleForValue(
+  value: number
+): Extract<NumericRole, 'positive' | 'negative' | 'neutral'> {
+  if (value > 0) return 'positive'
+  if (value < 0) return 'negative'
+  return 'neutral'
+}
+
 function Numeric({
   value,
   format = 'number',
@@ -98,5 +161,5 @@ function Numeric({
   )
 }
 
-export { Numeric, numericVariants }
-export type { NumericRole, NumericProps }
+export { Numeric, numericVariants, NumericText, numericTextVariants, numericRoleForValue }
+export type { NumericRole, NumericProps, LegacyNumericRole, NumericTextProps }
diff --git a/packages/ui/src/components/spinner.tsx b/packages/ui/src/components/spinner.tsx
index 9c88ce3..a2724d4 100644
--- a/packages/ui/src/components/spinner.tsx
+++ b/packages/ui/src/components/spinner.tsx
@@ -17,7 +17,7 @@ function Spinner({ className, label, ...props }: SpinnerProps) {
         ? { role: "status", "aria-label": label }
         : { "aria-hidden": true })}
       className={cn(
-        "inline-block size-3 shrink-0 animate-spin rounded-full border-2 border-current border-t-transparent",
+        "inline-block size-3 shrink-0 animate-spin rounded-full border-2 border-current border-t-transparent motion-reduce:animate-none motion-reduce:opacity-60",
         className
       )}
       {...props}