diff --git a/packages/library/package.json b/packages/library/package.json
index a527822..a081948 100644
--- a/packages/library/package.json
+++ b/packages/library/package.json
@@ -4,6 +4,7 @@
   "type": "module",
   "exports": {
     ".": {
+      "development": "./src/index.ts",
       "import": "./dist/index.js",
       "types": "./dist/src/index.d.ts"
     },
diff --git a/packages/library/src/components/ui/alert/index.ts b/packages/library/src/components/ui/alert/index.ts
index 88c8a32..35b06fb 100644
--- a/packages/library/src/components/ui/alert/index.ts
+++ b/packages/library/src/components/ui/alert/index.ts
@@ -7,15 +7,15 @@ export { default as AlertDescription } from './AlertDescription.vue'
 export { default as AlertTitle } from './AlertTitle.vue'
 
 export const alertVariants = cva(
-  'relative grid w-full gap-1 rounded-lg border px-3 py-2.5 text-sm has-data-[slot=alert-action]:pr-10',
+  'relative grid w-full gap-1 rounded-lg border border-l-4 px-3 py-2.5 text-sm text-foreground has-data-[slot=alert-action]:pr-10',
   {
     variants: {
       variant: {
-        info: 'bg-info/15 border-info/30 text-foreground [&_[data-slot=alert-title]]:text-info',
-        success: 'bg-success/15 border-success/30 text-foreground [&_[data-slot=alert-title]]:text-success',
-        warning: 'bg-warning/15 border-warning/30 text-foreground [&_[data-slot=alert-title]]:text-warning',
-        danger: 'bg-destructive/15 border-destructive/30 text-foreground [&_[data-slot=alert-title]]:text-destructive',
-        secondary: 'bg-secondary/40 border-border text-foreground',
+        info: 'bg-info/15 border-info/30 border-l-info',
+        success: 'bg-success/15 border-success/30 border-l-success',
+        warning: 'bg-warning/15 border-warning/30 border-l-warning',
+        danger: 'bg-destructive/15 border-destructive/30 border-l-destructive',
+        secondary: 'bg-secondary/40 border-border',
       },
     },
     defaultVariants: {
diff --git a/packages/playground/vite.config.ts b/packages/playground/vite.config.ts
index 8139d0c..169658e 100644
--- a/packages/playground/vite.config.ts
+++ b/packages/playground/vite.config.ts
@@ -8,6 +8,10 @@ export default defineConfig({
   resolve: {
     alias: {
       '~': fileURLToPath(new URL('./src', import.meta.url)),
+      // Matches packages/library's own alias -- needed because the "development"
+      // export condition on @nychthemeron/library resolves straight to that
+      // package's source (see its package.json), which itself imports via "@/...".
+      '@': fileURLToPath(new URL('../library/src', import.meta.url)),
     },
   },
 })