diff --git a/app/globals.css b/app/globals.css
index f22216c..0840c3e 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -1351,6 +1351,134 @@ html.theme-cyberpunk [data-group-card]:nth-child(3n) {
   }
 }
 
+/* ------------------------------ Cyberpunk Markdown Terminal ------------------- */
+
+/* Markdown preview in the notes dialog: a CRT terminal screen with phosphor-
+   green text on a deep black backdrop.  The VT323 pixel face (already scoped
+   to this theme's --font-sans) carries the whole retro feel. */
+html.theme-cyberpunk .wmde-markdown {
+  font-family: var(--font-cyberpunk), ui-monospace, monospace;
+  color: #00ff41;
+  background: oklch(0.06 0.01 140);
+  text-shadow:
+    0 0 4px rgb(0 255 65 / 0.35),
+    0 0 12px rgb(0 255 65 / 0.12);
+  font-size: 0.8125rem;
+  letter-spacing: 0.02em;
+  line-height: 1.65;
+}
+
+/* Editor chrome: the toolbar and editing surface inherit the terminal look.
+   Toolbar sits on a slightly brighter black; the editing surface is pure
+   phosphor-black with a faint scanline overlay. */
+html.theme-cyberpunk .w-md-editor {
+  font-family: var(--font-cyberpunk), ui-monospace, monospace;
+  --md-editor-font-family: var(--font-cyberpunk), ui-monospace, monospace;
+  color: #00ff41;
+  background: oklch(0.06 0.01 140);
+  border-color: #00ff41 / 22%;
+  text-shadow: 0 0 4px rgb(0 255 65 / 0.3);
+}
+html.theme-cyberpunk .w-md-editor .w-md-editor-toolbar {
+  background: oklch(0.09 0.01 140);
+  border-color: #00ff41 / 18%;
+  box-shadow: 0 0 8px rgb(0 255 65 / 0.08);
+}
+html.theme-cyberpunk .w-md-editor-toolbar-item,
+html.theme-cyberpunk .w-md-editor-toolbar-item-icon {
+  color: #00cc33;
+}
+html.theme-cyberpunk .w-md-editor-toolbar-item-active,
+html.theme-cyberpunk .w-md-editor-toolbar-item-active .w-md-editor-toolbar-item-icon {
+  color: #00ff41;
+  text-shadow: 0 0 6px rgb(0 255 65 / 0.6);
+}
+html.theme-cyberpunk .w-md-editor-text,
+html.theme-cyberpunk .w-md-editor-text-pre,
+html.theme-cyberpunk .w-md-editor-text-input {
+  color: #00ff41;
+  background: transparent;
+  font-family: var(--font-cyberpunk), ui-monospace, monospace;
+  text-shadow: 0 0 4px rgb(0 255 65 / 0.3);
+}
+html.theme-cyberpunk .w-md-editor-text-input::placeholder {
+  color: #00cc33 / 40%;
+}
+
+/* Subtle CRT scanline texture over the editor surface (not the toolbar).
+   Fixed-position so it stays anchored to the screen, not the scrolling text.
+   Click-through via pointer-events so the textarea stays usable. */
+html.theme-cyberpunk .w-md-editor-text-wrapper::before {
+  content: "";
+  position: absolute;
+  inset: 0;
+  pointer-events: none;
+  z-index: 5;
+  background: repeating-linear-gradient(
+    0deg,
+    rgb(0 255 65 / 0.02) 0px,
+    rgb(0 255 65 / 0.02) 1px,
+    transparent 1px,
+    transparent 3px
+  );
+}
+
+/* Links glow a softer cyan-green so they stand out from body text, and the
+   terminal cursor (caret) gets a phosphor-green flicker on focus. */
+html.theme-cyberpunk .wmde-markdown a,
+html.theme-cyberpunk .w-md-editor a {
+  color: #33ffaa;
+  text-shadow: 0 0 6px rgb(51 255 170 / 0.4);
+}
+html.theme-cyberpunk .wmde-markdown code,
+html.theme-cyberpunk .w-md-editor-text-pre code,
+html.theme-cyberpunk .w-md-editor-text-pre {
+  background: oklch(0.1 0.015 140);
+  color: #00ff41;
+  border: 1px solid #00ff41 / 20%;
+  text-shadow: 0 0 5px rgb(0 255 65 / 0.4);
+}
+html.theme-cyberpunk .wmde-markdown pre,
+html.theme-cyberpunk .w-md-editor-text-pre {
+  background: oklch(0.05 0.005 140);
+  border-color: #00ff41 / 15%;
+}
+html.theme-cyberpunk .wmde-markdown blockquote {
+  border-color: #00ff41 / 30%;
+  color: #00cc33;
+}
+html.theme-cyberpunk .wmde-markdown hr {
+  background: #00ff41 / 25%;
+  box-shadow: 0 0 8px rgb(0 255 65 / 0.2);
+}
+html.theme-cyberpunk .wmde-markdown h1,
+html.theme-cyberpunk .wmde-markdown h2,
+html.theme-cyberpunk .wmde-markdown h3,
+html.theme-cyberpunk .wmde-markdown h4,
+html.theme-cyberpunk .wmde-markdown h5,
+html.theme-cyberpunk .wmde-markdown h6 {
+  color: #00ff41;
+  text-shadow:
+    0 0 6px rgb(0 255 65 / 0.5),
+    0 0 16px rgb(0 255 65 / 0.2);
+  letter-spacing: 0.04em;
+}
+
+/* Faint screen flicker on the preview pane — a slow, barely-visible pulse
+   like an old CRT phosphor dimming.  Doesn't affect readability. */
+html.theme-cyberpunk .wmde-markdown {
+  animation: terminal-flicker 6s ease-in-out infinite;
+}
+@keyframes terminal-flicker {
+  0%, 100% { opacity: 1; }
+  50%      { opacity: 0.97; }
+}
+
+/* Cursor caret: a block-style terminal cursor that blinks green. */
+html.theme-cyberpunk .w-md-editor-text-input::selection {
+  background: #00ff41 / 25%;
+}
+
 /* ------------------------------ Vaporwave ------------------------------- */
 
 /* The retro face carries the whole deck: Righteous (a rounded, retro-futur-
diff --git a/components/board/group-card.tsx b/components/board/group-card.tsx
index f5f8159..385a397 100644
--- a/components/board/group-card.tsx
+++ b/components/board/group-card.tsx
@@ -29,7 +29,8 @@ import {
   DropdownMenuTrigger,
 } from "@/components/ui/dropdown-menu";
 import { getBrighterColor, getComplementaryColor, getGroupColor } from "@/lib/colors";
-import { isDarkTheme } from "@/components/theme/use-dark-theme";
+import { isDarkTheme, isCyberpunkTheme } from "@/components/theme/use-dark-theme";
+import { getCyberpunkGroupColor } from "@/lib/colors";
 import { useBoard } from "@/components/board/board-context";
 import { useBoardView } from "@/components/board/board-view-provider";
 import { useHoldOnComplete } from "@/components/hold-on-complete";
@@ -121,7 +122,9 @@ export function GroupCard({ group }: { group: GroupDTO }) {
   // card ever ringing itself while it's the one being moved.)
   const isDropTarget = isOver && !isDragging;
 
-  const color = getGroupColor(group.color);
+  const color = isCyberpunkTheme()
+    ? getCyberpunkGroupColor(group.color)
+    : getGroupColor(group.color);
   const borderColor = isDark ? color.dark : color.light;
   // The card fill is a calm, hand-picked tint of the same stroke color
   // (`soft` / `softDark` in lib/colors.ts), blended a little into the theme's
diff --git a/components/theme/use-dark-theme.ts b/components/theme/use-dark-theme.ts
index 34167fa..42b7347 100644
--- a/components/theme/use-dark-theme.ts
+++ b/components/theme/use-dark-theme.ts
@@ -38,6 +38,16 @@ export function isDarkTheme(): boolean {
   return DARK_SURFACES.includes(resolveTheme(theme));
 }
 
+/** True when the "cyberpunk" theme is active.  Used to swap the neon
+ * color palette onto group cards only for that theme.
+ */
+export function isCyberpunkTheme(): boolean {
+  const mounted = useMounted();
+  const { theme } = useTheme();
+  if (!mounted) return false;
+  return resolveTheme(theme) === "cyberpunk";
+}
+
 /**
  * The `data-color-mode` value the markdown editor/preview widgets expect.
  * They only understand light/dark, so the light looks (default, sunset,
diff --git a/lib/colors.ts b/lib/colors.ts
index 830d6ae..be3b036 100644
--- a/lib/colors.ts
+++ b/lib/colors.ts
@@ -48,6 +48,24 @@ export const GROUP_COLORS: GroupColor[] = [
   { key: "pink",   label: "Pink",   light: "#d63f8f", dark: "#f472b6", soft: "#fadfee", softDark: "#37202e" },
 ];
 
+// --- Cyberpunk neon palette ---
+// A secondary palette used ONLY when the "cyberpunk" theme is active.
+// These are high-saturation neon values (magenta, cyan, acid green, etc.)
+// that give group cards that classic "neon in the night" look.  The
+// softDark fills are shifted well down in lightness so they read as a
+// subtle glow against the near-black surfaces instead of washed-out pastels.
+
+const CYBERPUNK_PALETTE: Record<string, GroupColor> = {
+  coral:  { key: "coral",  label: "Neon Pink",   light: "#ff2a8f", dark: "#ff2a8f", soft: "#fadfee", softDark: "#3d1433" },
+  amber:  { key: "amber",  label: "Acid Lime",   light: "#a8ff00", dark: "#a8ff00", soft: "#eeffe0", softDark: "#2d3a12" },
+  lime:   { key: "lime",   label: "Toxic Green", light: "#39ff14", dark: "#39ff14", soft: "#e0fde0", softDark: "#163d14" },
+  teal:   { key: "teal",   label: "Electric Cyan",light: "#00fff0", dark: "#00fff0", soft: "#dffffa", softDark: "#0f3d3a" },
+  sky:    { key: "sky",    label: "Voltage Blue",light: "#00aaff", dark: "#00aaff", soft: "#e0f0ff", softDark: "#12263d" },
+  indigo: { key: "indigo", label: "Neon Purple", light: "#bf40ff", dark: "#bf40ff", soft: "#f0e0ff", softDark: "#2e1640" },
+  violet: { key: "violet", label: "Neon Magenta",light: "#ff2aff", dark: "#ff2aff", soft: "#ffe0f5", softDark: "#3d1436" },
+  pink:   { key: "pink",   label: "Deep Violet", light: "#8a2be2", dark: "#8a2be2", soft: "#e8d6ff", softDark: "#261236" },
+};
+
 const GROUP_COLOR_MAP: Record<string, GroupColor> = Object.fromEntries(
   GROUP_COLORS.map((c) => [c.key, c])
 );
@@ -58,6 +76,13 @@ export function getGroupColor(key: string): GroupColor {
   return GROUP_COLOR_MAP[key] ?? GROUP_COLORS[0];
 }
 
+/** Get the cyberpunk-neon variant of a group color.  Used ONLY when the
+ * "cyberpunk" theme is active so groups read as neon tubes in the night.
+ */
+export function getCyberpunkGroupColor(key: string): GroupColor {
+  return CYBERPUNK_PALETTE[key] ?? CYBERPUNK_PALETTE["coral"];
+}
+
 // --- Complementary accent (for the to-do progress pie on a Group card) ---
 //
 // Derived at runtime by rotating a base color's hue 180° and pulling the