diff --git a/README.md b/README.md
index 0eb8419..bff0fd1 100644
--- a/README.md
+++ b/README.md
@@ -1,109 +1,30 @@
-<p align="center">
-  <img src="assets/banner.png" alt="nightd banner" width="400"/>
-</p>
+# nightd
 
-<h1 align="center">nightd</h1>
-<p align="center">
-  <em>screen dimmer for android tv</em><br>
-  <strong>keep your media playing while the screen goes dark</strong>
-</p>
+screen dimmer for android tv. keeps media playing while the screen goes dark.
 
-<p align="center">
-  <a href="https://github.com/sudoxnym/nightd/releases/latest"><img src="https://img.shields.io/github/v/release/sudoxnym/nightd?style=flat-square&color=00d4ff" alt="latest release"/></a>
-  <a href="https://github.com/sudoxnym/nightd/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-MIT-ff69b4?style=flat-square" alt="license"/></a>
-  <img src="https://img.shields.io/badge/android-7.0+-7B68EE?style=flat-square" alt="android 7.0+"/>
-</p>
+## download
 
----
+[nightd.apk](https://github.com/sudoxnym/nightd/releases/latest)
 
-## what is this?
+## install
 
-nightd is a tiny android tv app that blacks out your screen while keeping your media playing. perfect for:
+```bash
+adb install nightd.apk
+```
 
-- **falling asleep to music/podcasts** - screen goes dark, audio keeps playing
-- **saving power on oled displays** - no burn-in, no wasted pixels
-- **background audio** - cast audio without lighting up your room
-
-## modes
-
-| mode | what it does |
-|------|-------------|
-| **dim** | single overlay layer (~40% darker) |
-| **black** | 5 stacked layers = pitch black (android limits overlay opacity to 80%, so we stack 'em) |
-
-cycle order: `off → dim → black → off`
-
-## installation
-
-1. download the latest [nightd.apk](https://github.com/sudoxnym/nightd/releases/latest)
-2. sideload via adb: `adb install nightd.apk`
-3. grant "display over other apps" permission when prompted
+grant "display over other apps" permission when prompted.
 
 ## usage
 
-### with key mapper (recommended)
+use [key mapper](https://github.com/keymapperorg/KeyMapper) to bind to a remote button.
 
-use [key mapper](https://github.com/keymapperorg/KeyMapper) to bind nightd to remote buttons:
+set up an **activity** intent:
+- **action:** `com.sudoxnym.nightd.TOGGLE`
+- **package:** `com.sudoxnym.nightd`
+- **class:** `com.sudoxnym.nightd.ToggleActivity`
 
-| action | intent |
-|--------|--------|
-| toggle | `com.sudox.nightd.TOGGLE` |
-| dim mode | `com.sudox.nightd.DIM` |
-| black mode | `com.sudox.nightd.BLACK` |
-| turn off | `com.sudox.nightd.OFF` |
-
-**package:** `com.sudox.nightd`  
-**service:** `com.sudox.nightd.NightdService`
-
-example: bind "zoom in" to toggle, "zoom out" to off.
-
-### with adb
-
-```bash
-# toggle (cycles through off → dim → black → off)
-adb shell am startservice -a com.sudox.nightd.TOGGLE com.sudox.nightd/.NightdService
-
-# specific modes
-adb shell am startservice -a com.sudox.nightd.DIM com.sudox.nightd/.NightdService
-adb shell am startservice -a com.sudox.nightd.BLACK com.sudox.nightd/.NightdService
-adb shell am startservice -a com.sudox.nightd.OFF com.sudox.nightd/.NightdService
-```
-
-## how it works
-
-android limits overlay opacity to 80% per layer. to achieve true black, nightd stacks 5 layers:
-
-```
-0.8 × 0.8 × 0.8 × 0.8 × 0.8 = 0.032 (96.8% blocked)
-```
-
-plus it sets screen brightness to 0 for good measure.
-
-## permissions
-
-- **SYSTEM_ALERT_WINDOW** - required to draw overlay
-- **FOREGROUND_SERVICE** - keeps the overlay running
-- **WRITE_SETTINGS** - adjusts screen brightness (optional, gracefully fails)
-
-## building from source
-
-```bash
-# clone
-git clone https://github.com/sudoxnym/nightd.git
-cd nightd
-
-# build (requires android ndk)
-./gradlew assembleRelease
-
-# or use the aapt/d8/apksigner toolchain directly
-```
+other actions: `OFF`, `DIM`, `BLACK`
 
 ## license
 
-MIT - do whatever you want with it.
-
----
-
-<p align="center">
-  <sub>built by <a href="https://github.com/sudoxnym">sudoxnym</a> for the sleep-deprived</sub>
-</p>
+MIT