diff --git a/README.md b/README.md
index f69d472..da7f616 100644
--- a/README.md
+++ b/README.md
@@ -22,20 +22,47 @@ Run a command without installing:
 npx @nbtca/prompt --help
 ```
 
+## Interactive mode
+
+Run `nbtca` with no arguments to open the full-screen client. Press `1`–`5` or
+`Tab` to switch tabs, and `?` to list every key.
+
+- **Home**: today's classes and the next club events.
+- **Schedule**: the current term, week, and next break from the school
+  calendar. Log in to the campus system to see your timetable and export it as
+  an `.ics` file.
+- **Events**: the next event with a countdown, plus week, month, search,
+  history, and a one-year activity heatmap.
+- **Docs**: the NBTCA knowledge base, readable and searchable in the terminal.
+  It is cached locally and served from a mirror when GitHub is unreachable.
+- **Settings**: language, icon and color modes, and version info.
+
+Events, docs, and the school calendar stay readable offline from the last
+successful fetch.
+
 ## Commands
 
 ```text
-nbtca events [--json]
+nbtca events [--today|--week|--month] [--search=<q>] [--next=<n>] [--json]
+nbtca events --heatmap
 nbtca docs
-nbtca status
+nbtca status [--watch] [--json]
 nbtca schedule login
+nbtca schedule status
 nbtca schedule terms
-nbtca schedule export --term=2026:3 --week-one=YYYY-MM-DD
+nbtca schedule export --term=2026:3 --week-one=YYYY-MM-DD [--output=<path>]
 nbtca schedule logout
+nbtca website|github|roadmap|repair [--open]
+nbtca theme icon auto|ascii|unicode
+nbtca theme color auto|on|off
+nbtca theme reset
+nbtca lang zh|en
+nbtca update
 ```
 
-Use `--plain` for stable output without color. `schedule export --one-shot`
-avoids reading or saving a campus session.
+`nbtca --help` lists every flag. Use `--plain` for stable output without color
+and `--no-logo` to skip the startup logo. `schedule export --one-shot` avoids
+reading or saving a campus session.
 
 Prompt never stores passwords. Persisted sessions contain only a masked account
 hint and a CookieJar, protected with user-only permissions on POSIX systems.