Merge pull request #30 from sei-protocol/docs/evm-rpc-explorer

docs(evm): interactive Sei-accurate JSON-RPC explorer on /evm/reference

Author: alexander-sei

evm/index.mdx

@@ -52,13 +52,16 @@ keywords: ["sei evm", "ethereum virtual machine", "web3 development", "blockchai
 
 ## Development Tools
 
-<CardGroup cols={2}>
+<CardGroup cols={3}>
   <Card horizontal title="Deploy with Hardhat" icon="terminal" href="/evm/evm-hardhat">
     Deploy smart contracts on Sei EVM using Hardhat. Simple setup, fast results.
   </Card>
   <Card horizontal title="Deploy with Foundry" icon="cube" href="/evm/evm-foundry">
     Use Foundry to build and deploy on Sei EVM. Fast testing, simple deployment.
   </Card>
+  <Card horizontal title="JSON-RPC Explorer" icon="compass" href="/evm/reference">
+    Browse every Sei EVM JSON-RPC method, run live requests, and copy ready-to-use code.
+  </Card>
 </CardGroup>
 
 ## Use Cases
@@ -96,4 +99,6 @@ Choose from official Sei Foundation endpoints or community-maintained alternativ
   </Tab>
 </Tabs>
 
-For the complete list of JSON-RPC methods, see the [EVM reference](/evm/reference).
+<Card horizontal title="Interactive JSON-RPC Explorer" icon="code" href="/evm/reference">
+  Search every Sei EVM JSON-RPC method with Sei-specific behavior notes, switch between mainnet, testnet, and custom endpoints, run live requests, and generate ready-to-use client code.
+</Card>