Merge PR #4: docs code font + mermaid breaks

Author: Microck

docs/architecture/overview.mdx

@@ -10,18 +10,18 @@ Undying Terminal implements a **three-component distributed architecture** desig
 ```mermaid
 graph TB
     subgraph "Client Machine"
-        C[undying-terminal.exe\nClient]
+        C[undying-terminal.exe<br/>Client]
     end
     
     subgraph "Server Machine"
-        S[undying-terminal-server.exe\nSession Manager]
-        T[undying-terminal-terminal.exe\nPTY + Shell]
+        S[undying-terminal-server.exe<br/>Session Manager]
+        T[undying-terminal-terminal.exe<br/>PTY + Shell]
         
         S ---|Named Pipe| T
     end
     
     C ---|TCP + Encryption| S
-    T ---|Spawns| SH[Shell Process\ncmd.exe / powershell]
+    T ---|Spawns| SH[Shell Process<br/>cmd.exe / powershell]
     
     style C fill:#fc6505,color:#fff
     style S fill:#3e4954,color:#fff
@@ -412,7 +412,7 @@ Shell Process:
 | **Keepalive Traffic** | ~200 bytes/5s | Minimal overhead |
 
 <Info>
-Latency overhead is negligible for interactive terminal use (under 5ms is imperceptible).
+Latency overhead is negligible for interactive terminal use (&lt;5ms is imperceptible).
 </Info>
 
 ## Scalability

docs/config/server-config.mdx

@@ -451,7 +451,7 @@ Get-Content server.log -Wait -Tail 20
 |--------|---------|--------------|
 | Active Connections | `netstat -ano \| findstr :2022 \| measure` | 0-1000s |
 | Memory Usage | `tasklist /fi "imagename eq undying-terminal-server.exe"` | ~50MB + (5MB × sessions) |
-| CPU Usage | Task Manager | under 5% idle, under 20% under load |
+| CPU Usage | Task Manager | <5% idle, <20% under load |
 
 ## Backup and Recovery
 

docs/installation.mdx

@@ -413,7 +413,7 @@ pacman -S mingw-w64-x86_64-cmake \
   <Accordion title="ConPTY not available">
     Error: `CreatePseudoConsole failed`
 
-    **Cause**: Windows version < Build 17763
+    **Cause**: Windows version &lt; Build 17763
 
     **Solution**: Update Windows to October 2018 Update (Build 17763) or later
   </Accordion>

docs/style.css

@@ -0,0 +1,13 @@
+@import url('https://fonts.googleapis.com/css2?family=Fira+Mono:wght@400;500;700&display=swap');
+
+:where(code, pre, kbd, samp) {
+  font-family: 'Fira Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
+    'Liberation Mono', 'Courier New', monospace;
+}
+
+/* Mintlify code block wrappers (best-effort selectors; safe if unused). */
+.code-block :where(code, pre),
+.code-group :where(code, pre) {
+  font-family: 'Fira Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
+    'Liberation Mono', 'Courier New', monospace;
+}

docs/troubleshooting/common-issues.mdx

@@ -253,7 +253,7 @@ Test-NetConnection <HOST> -Port 2022
     # shared_key_hex=...  <-- Comment out
     ```
 
-    Restart server and test. If faster, encryption overhead is the issue (should be under 1ms though).
+    Restart server and test. If faster, encryption overhead is the issue (should be &lt;1ms though).
   </Step>
 </Steps>
 
@@ -570,7 +570,7 @@ $PSStyle.OutputRendering = 'Ansi'
 
 **Error**: `CreatePseudoConsole failed`
 
-**Cause**: Windows version < Build 17763
+**Cause**: Windows version &lt; Build 17763
 
 **Solution**: Update Windows
 ```powershell

docs/troubleshooting/faq.mdx

@@ -364,7 +364,7 @@ bind_ip=127.0.0.1  # Only accessible via VPN
 - SSH: 0.5-1ms overhead
 - Mosh: 1-3ms (with prediction)
 
-**Impact**: Imperceptible for interactive terminal use (under 5ms is instant to humans).
+**Impact**: Imperceptible for interactive terminal use (<5ms is instant to humans).
 
 ### How much bandwidth does it use?
 
@@ -547,7 +547,7 @@ See [Contributing Guide](/development/contributing).
 - 📝 Improve documentation
 - 💻 Submit pull requests
 - 🧪 Test on different Windows versions
-- 💬 Answer questions on GitHub
+- 💬 Help triage GitHub issues
 
 ## Getting Help
 
@@ -556,7 +556,6 @@ See [Contributing Guide](/development/contributing).
 **Documentation**: https://undyingterminal.dev  
 **GitHub Issues**: https://github.com/Microck/UndyingTerminal/issues  
 
-
 **Before asking**:
 1. Check this FAQ
 2. Search existing issues