diff --git a/README.md b/README.md
index 37f86af..e4a221c 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ Public downloads should be attached to GitHub Releases after the checklist is co
 Requirements:
 
 - Windows 10/11
+- 64-bit Windows (`win-x64`). 32-bit Windows is not supported by the current release package.
 - .NET 8 SDK
 - Administrator privileges when running the app, because route and packet interception features need elevated access
 
@@ -52,3 +53,5 @@ TunnelX is free. Donations are optional and help keep the project maintained.
 ## Safety Notice
 
 TunnelX is a networking and routing tool. Use it only where you are allowed to run VPN, proxy, packet capture, and route-management software. The project does not provide legal advice.
+
+TunnelX is provided as-is, without warranty and without any obligation from the maintainer to provide updates, fixes, support, or continued availability.
diff --git a/SECURITY.md b/SECURITY.md
index 5c584bd..453049d 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -13,3 +13,5 @@ Before the repository is public, report security issues privately to the maintai
 ## Sensitive Data
 
 Do not include real VPN credentials, private configs, access tokens, wallet private keys, or private server addresses in issues, screenshots, logs, or pull requests.
+
+Security reports are welcome, but publication of this project does not create a guaranteed response time or an obligation to ship a fix.
diff --git a/SUPPORT.md b/SUPPORT.md
index 8d860dd..7fd5787 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -7,3 +7,5 @@ For public support after GitHub publication:
 - Remove server credentials, UUIDs, private keys, and private endpoints from logs before posting.
 
 Commercial or private support is not defined yet.
+
+TunnelX is provided for free, as-is. The maintainer has no obligation to provide updates, bug fixes, compatibility updates, release builds, or individual support.
diff --git a/THIRD_PARTY_NOTICES.md b/THIRD_PARTY_NOTICES.md
index 1b8b289..98ffeb7 100644
--- a/THIRD_PARTY_NOTICES.md
+++ b/THIRD_PARTY_NOTICES.md
@@ -15,6 +15,7 @@ TunnelX includes or works with third-party software. These notices are part of t
 
 - Keep this file with every binary release.
 - Keep `AppTunnel/NativeLibs/LICENSE` with WinDivert notices.
+- The current repository bundles x64 native components only. Do not advertise 32-bit Windows support unless separate x86 binaries and tests are added.
 - Do not remove upstream copyright or license notices.
 - If native binaries are updated, refresh this table and the release checklist.
 - If crypto, GeoIP, GeoSite, or core binaries are downloaded from upstream releases, record the exact version and source URL in the release notes.
diff --git a/docs/BUILD.md b/docs/BUILD.md
index d393d6c..1b9601c 100644
--- a/docs/BUILD.md
+++ b/docs/BUILD.md
@@ -2,6 +2,8 @@
 
 ## Local Build
 
+TunnelX currently targets 64-bit Windows only. The project file sets `PlatformTarget` to `x64`, and the bundled native components under `AppTunnel/NativeLibs/x64` are required for the current build.
+
 ```powershell
 dotnet build AppTunnel.sln -c Release
 ```
@@ -18,6 +20,10 @@ Rename the final executable with the app version:
 TunnelX-v1.2.21-standalone-compressed.exe
 ```
 
+## 32-bit Windows
+
+32-bit Windows builds are not supported at this time. Supporting `win-x86` would require a separate compatibility pass, x86-compatible native binaries for every bundled network component, and separate testing for WinDivert/Wintun, Xray/sing-box, packet interception, route management, and the standalone extraction path.
+
 ## Before Publishing
 
 - Run the leak test plan in `docs/PUBLISHING_CHECKLIST.md`.
diff --git a/docs/LEGAL.md b/docs/LEGAL.md
index dff343d..a3af2e6 100644
--- a/docs/LEGAL.md
+++ b/docs/LEGAL.md
@@ -18,4 +18,12 @@ TunnelX is a network routing, VPN, proxy, and packet interception tool. Users ar
 
 TunnelX is provided without warranty. It can change routes, DNS behavior, local proxy behavior, and packet handling, so users should test carefully before relying on it.
 
+## No Maintenance Obligation
+
+Publishing TunnelX as free and open-source software does not create any obligation for MaxFan or other maintainers to provide updates, fixes, support, new releases, compatibility work, or continued availability. Contributions and maintenance are voluntary unless a separate written agreement says otherwise.
+
+## Platform Support
+
+The current release package is for 64-bit Windows only. 32-bit Windows is not supported unless a future release explicitly says otherwise.
+
 This document is not legal advice.