diff --git a/firmware/cyd/media/preview.html b/firmware/cyd/media/preview.html
new file mode 100644
index 0000000..78b3f46
--- /dev/null
+++ b/firmware/cyd/media/preview.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8" />
+<title>Button</title>
+<style>
+
+  *{box-sizing:border-box;margin:0;padding:0}
+  html,body{width:320px;height:240px;overflow:hidden;background:#000;margin:0}
+  .bezel{width:320px;height:240px;background:#1a1408}
+  .screen{width:320px;height:240px;background:#0A1016;color:#EAF0F6;font:12px/1.2 system-ui,sans-serif;position:relative;overflow:hidden}
+  .muted{color:#7A8B9C}.ok{color:#3DDC97}.bad{color:#E85D4C}.acc{color:#4FC3F7}.amber{color:#FFB74D}
+  .btn{border:0;border-radius:8px;background:#243140;color:#EAF0F6;font-weight:600}
+  .btn.acc{background:#1A4A6E}.btn.on{background:#1B5E4A}.btn.warn{background:#6B3A1E}
+
+
+  .t{position:absolute;left:0;right:0;top:4px;text-align:center;font-size:26px;font-weight:700}
+  .pin{position:absolute;left:0;right:0;top:40px;text-align:center}
+  .cnt{position:absolute;left:0;right:0;top:68px;text-align:center;font-size:48px;font-weight:800;color:#4FC3F7}
+  .hint{position:absolute;left:0;right:0;top:124px;text-align:center}
+  .st{position:absolute;left:0;right:0;top:144px;text-align:center;font-size:16px;font-weight:700}
+  .raw{position:absolute;left:0;right:0;top:168px;text-align:center;font-size:11px}
+  .act{position:absolute;left:24px;right:24px;bottom:12px;height:44px}
+
+</style>
+</head>
+<body>
+<div class="bezel"><div class="screen" id="s">
+
+  <div class="t">Button</div>
+  <div class="pin muted">OUT-&gt;GPIO22  VCC 3.3V</div>
+  <div class="cnt">12</div>
+  <div class="hint muted">count</div>
+  <div class="st">IDLE</div>
+  <div class="raw muted">OUT LOW  act=HIGH</div>
+  <button class="btn act" type="button">Reset</button>
+
+</div></div>
+</body>
+</html>
diff --git a/firmware/cyd/meta.json b/firmware/cyd/meta.json
index 77819c6..ef0446e 100644
--- a/firmware/cyd/meta.json
+++ b/firmware/cyd/meta.json
@@ -3,5 +3,14 @@
   "name": "CYD Button",
   "summary": "3-pin button module on GPIO22: each press increments count",
   "description": "SoftSPI touch + LVGL. VCC/GND/OUT->GPIO22. Auto polarity. Press +1, touch Reset clears.",
-  "tags": ["button", "gpio22", "touch", "lvgl", "counter"]
+  "tags": [
+    "button",
+    "gpio22",
+    "touch",
+    "lvgl",
+    "counter"
+  ],
+  "media": {
+    "preview": "media/preview.html"
+  }
 }