feat: era section in docs (#468)

# Description

- Creates new ZKsync Era section
- Cleans up SDKs pages
- Moves Ecosystem inside ZKsync Era section (includes redirects)

## Linked Issues

General re org

## Additional context

Author: uF4No

content/00.zksync-network/00.index.md

@@ -63,7 +63,7 @@ ZKsync chains are built to provide a similar developer experience as Ethereum.
 
 :check-icon Smart contracts can be written in Solidity or Vyper.
 
-:check-icon Use standard `solc` and `vyper` compilers for EVM bytecode execution via [the EVM Interpreter](../zksync-network/unique-features/evm-interpreter/evm-interpreter).
+:check-icon Use standard `solc` and `vyper` compilers for EVM bytecode execution via [the EVM Interpreter](/zksync-network/zksync-era/unique-features).
 
 :check-icon Use custom compilers **[zksolc and
 zkvyper](/zksync-protocol/era-vm/compiler/toolchain)** to compile contracts to native EraVM bytecode for more efficient execution.
@@ -94,5 +94,5 @@ On **ZKsync chains**:
 - Support for existing Ethereum-based wallets like Metamask, TrustWallet, Zerion, Rabby, etc.
 
 ::callout{icon="i-heroicons-cube-transparent-solid" color="blue"}
-To add ZKsync Era to your wallet, see [Connect to ZKsync Era](/zksync-network/environment/zksync-era).
+To add ZKsync Era to your wallet, see [Connect to ZKsync Era](/zksync-network/zksync-era/network-details).
 ::

content/00.zksync-network/10.guides/10.quick-start/1.index.md

@@ -15,7 +15,7 @@ to help you learn as quickly and efficiently as possible.
 
 ## Get started
 
-- If you haven't already added ZKsync Era to your wallet, follow the instructions in [Connect ZKsync Era to your wallet](/zksync-network/environment/zksync-era).
+- If you haven't already added ZKsync Era to your wallet, follow the instructions in [Connect ZKsync Era to your wallet](/zksync-network/zksync-era/network-details).
 - Continue to [Deploy your first contract](/zksync-network/guides/quick-start/deploy-your-first-contract)
   to learn how to use Remix to deploy a contract onto ZKsync Era.
 - If you are familiar with ZKsync Era and want to develop using `zksync-cli` locally

content/00.zksync-network/10.guides/10.quick-start/3.deploy-your-first-contract.md

@@ -22,7 +22,7 @@ By default, this guide uses ZKsync Era, but you can run it on any chain in the Z
 
 1. Before you start, make sure that
 [you’ve configured the %%zk_testnet_name%% in your wallet](/zksync-network/environment).
-2. Have at least 0.05 %%zk_testnet_name%% ETH. If you need more, use [one of the faucets](/zksync-network/ecosystem/network-faucets).
+2. Have at least 0.05 %%zk_testnet_name%% ETH. If you need more, use [one of the faucets](/zksync-network/zksync-era/ecosystem/network-faucets).
 
 ## Review the smart contract code
 

content/00.zksync-network/10.guides/10.quick-start/4.erc20-token.md

@@ -18,8 +18,8 @@ By default, this guide uses ZKsync Era, but you can run it on any chain in the Z
 ## Prerequisites
 
 1. Before you start, make sure that
-[you’ve configured the %%zk_testnet_name%% in your wallet](/zksync-network/environment/zksync-era).
-2. Have at least 0.05 %%zk_testnet_name%% ETH. If you need more, use [one of the faucets](/zksync-network/ecosystem/network-faucets).
+[you’ve configured the %%zk_testnet_name%% in your wallet](/zksync-network/zksync-era/network-details).
+2. Have at least 0.05 %%zk_testnet_name%% ETH. If you need more, use [one of the faucets](/zksync-network/zksync-era/ecosystem/network-faucets).
 
 ## Custom ERC20 token code
 

content/00.zksync-network/25.zksync-era/00.index.md

@@ -0,0 +1,51 @@
+---
+title: "About ZKsync Era"
+description: "Understand the role of ZKsync Era within the ZKsync ecosystem, its architecture, and developer experience."
+---
+
+ZKsync Era is a Layer 2 rollup built with the **ZK Stack**, designed to scale Ethereum using zero-knowledge proofs while preserving its security.
+It was the first chain launched with the ZK Stack and the first member of the **Elastic Network**, which now includes [over 15 interconnected ZK chains](/zksync-network/environment).
+
+## Architecture
+
+ZKsync Era operates as a **zero-knowledge rollup (ZK rollup)**. It executes transactions off-chain, aggregates them into batches, and generates
+a succinct **zero-knowledge validity proof** to verify all state changes. This proof is then submitted to Ethereum, ensuring
+correctness and finality while reducing gas costs.
+
+Era uses the **EraVM**, a high-performance virtual machine that is compatible with the Ethereum Virtual Machine (EVM).
+Developers can deploy existing Solidity or Vyper contracts on Era with minimal or no changes.
+
+### Core Components
+
+- **Sequencer** — Orders and executes transactions off-chain to produce state updates.
+- **Prover** — ZKsync Era uses the Boojum prover. It generates validity proofs for batches of transactions.
+- **Verifier** — A smart contract on Ethereum that verifies proofs and finalizes state transitions.
+- **EraVM** — Executes smart contracts bytecode with additional optimizations for ZK proof generation.
+
+## Position in the Ecosystem
+
+ZKsync Era forms the foundation of the **Elastic Network**, a growing set of ZKsync chains that interoperate through shared proofs and trustless bridging.
+As the first ZKsync chain, it serves as the main hub for the ecosystem’s activity and infrastructure.
+
+Era is where the **ZK token** was initially deployed and where **on-chain governance** takes place, making it the coordination layer for protocol
+upgrades and community decision-making. Because of its early launch and adoption, ZKsync Era integrates with major exchanges, infrastructure
+providers such as **Chainlink** and **Tenderly**, and hosts deployments from many leading **DeFi protocols**.
+
+These integrations, assets, and tools will be accessible to other ZKsync chains through [**ZKsync Connect**](/zksync-network/unique-features/zksync-connect/),
+ensuring that all chains in the Elastic Network benefit from access to the same liquidity, infrastructure,
+and ecosystem support while maintaining independent execution environments.
+
+## Developer Experience
+
+ZKsync Era provides an Ethereum-equivalent development environment, making it straightforward to build, test, and deploy applications
+thanks to the [EVM Bytecode Interpreter](/zksync-network/zksync-era/unique-features#evm-bytecode-interpreter).
+
+Common Ethereum development tools—such as Hardhat, Foundry, and Remix—work out of the box.
+Developers can interact with Era through the same JSON-RPC interface, enabling integration with wallets, SDKs, and dApps without special configurations.
+
+## User Experience
+
+For end users, transactions on ZKsync Era offer faster confirmations and significantly lower fees compared to Ethereum mainnet.
+Era also supports [**native account abstraction**](/zksync-network/zksync-era/unique-features#native-account-abstraction), enabling smart wallets,
+flexible fee payments using ERC-20 tokens,
+and features like paymasters for gas sponsorship.

…-network/20.environment/03.zksync-era.md …work/25.zksync-era/01.network-details.mdcontent/00.zksync-network/20.environment/03.zksync-era.md renamed to content/00.zksync-network/25.zksync-era/01.network-details.md content/00.zksync-network/20.environment/03.zksync-era.md renamed to content/00.zksync-network/25.zksync-era/01.network-details.md

@@ -26,7 +26,7 @@ To manually add ZKsync Era as a custom network in your wallet, follow these step
 ## Get testnet funds for your wallet
 
 Once you have your wallet connected to a ZKsync Era environment,
-you can get testnet funds from one of many [testnet faucets](/zksync-network/ecosystem/network-faucets)
+you can get testnet funds from one of many [testnet faucets](/zksync-network/zksync-era/ecosystem/network-faucets)
 to use with [deploying your first smart contract](/zksync-network/guides).
 
 <!-- TODO: Add link to API overview -->

content/00.zksync-network/25.zksync-era/02.unique-features.md

@@ -0,0 +1,107 @@
+---
+title: "Features"
+description: "Learn about ZKsync Era’s special features, including native Account Abstraction, Paymasters, and the EVM Bytecode Interpreter"
+---
+
+ZKsync Era introduces several protocol-level features that extend Ethereum’s capabilities while maintaining compatibility with existing tools and workflows.
+These include **native Account Abstraction**, **Paymasters**, and an **EVM Bytecode Interpreter** for seamless integration with the Ethereum ecosystem.
+
+## Native Account Abstraction
+
+ZKsync Era natively supports **Account Abstraction (AA)**, allowing accounts to include custom logic at the protocol level.
+This enables smart accounts that can define how transactions are authorized and executed, unlocking use cases such as:
+
+- Account recovery and social recovery mechanisms
+- Native multisignature accounts
+- Session keys and programmable spending rules
+
+To learn more about Account Abstraction design, see the [protocol documentation](/zksync-protocol/era-vm/account-abstraction).
+
+If you prefer a practical approach, explore these tutorials:
+
+- [Native multisig smart account](https://code.zksync.io/tutorials/native-aa-multisig)
+- [Daily spending limit account](https://code.zksync.io/tutorials/daily-spend-limit-account)
+
+## Paymasters
+
+ZKsync Era also includes native support for **Paymasters**, an extension of the Account Abstraction model introduced
+in [EIP-4337](https://eips.ethereum.org/EIPS/eip-4337#extension-paymasters).
+Paymasters act as an intermediate layer in transaction processing, controlling how fees are paid or sponsored.
+
+Common use cases include:
+
+- Paying transaction fees in ERC-20 or NFT tokens
+- Subsidizing transactions for onboarding or promotions
+- Managing fee payments for a predefined set of accounts
+
+For details on Paymaster design, see the [protocol documentation](/zksync-protocol/era-vm/account-abstraction/paymasters).
+
+### Testnet Paymaster
+
+To simplify testing, %%zk_testnet_name%% provides a built-in **testnet paymaster** that supports ERC-20 fee payments.
+
+**Key details**
+
+- **Address**: `0x3cb2b87d10ac01736a65688f3e0fb1b070b3eea3` ([View on explorer](https://sepolia.explorer.zksync.io/address/0x3cb2b87d10ac01736a65688f3e0fb1b070b3eea3))
+- **Chain**: %%zk_testnet_name%%
+- **Exchange rate**: 1:1 with ETH (1 token unit = 1 wei)
+- **Flow type**: Approval-based
+- **Usage requirements**:
+  - `token`: must match the ERC-20 token used for fee payment
+  - `minimalAllowance`: at least `tx.maxFeePerGas * tx.gasLimit`
+  - `innerInput`: must be empty (`0x`)
+
+**Example usage**
+
+```ts
+const paymasterParams = {
+  paymaster: "0x3cb2b87d10ac01736a65688f3e0fb1b070b3eea3",
+  paymasterInput: {
+    type: "ApprovalBased",
+    token: "<ERC20_TOKEN_ADDRESS>",
+    minimalAllowance: tx.maxFeePerGas * tx.gasLimit,
+    innerInput: "0x",
+  },
+};
+```
+
+This setup lets developers simulate ERC-20-based fee payments in a testnet environment without deploying a custom paymaster.
+
+### Paymaster Tutorials
+
+- [Build an ERC20 custom paymaster](https://code.zksync.io/tutorials/erc20-paymaster)
+- [Dapp with gated NFT paymaster](https://code.zksync.io/tutorials/dapp-nft-paymaster)
+- [Frontend Quickstart with a Paymaster](https://code.zksync.io/tutorials/frontend-paymaster)
+- [Integrate permissionless multi-signer paymaster](https://code.zksync.io/tutorials/permissionless-paymaster)
+
+## EVM Bytecode Interpreter
+
+The **EVM Bytecode Interpreter** in ZKsync Era provides runtime compatibility for Ethereum smart contracts.
+It translates EVM instructions into EraVM instructions during execution, allowing developers to deploy contracts compiled with standard
+ Ethereum toolchains—without using ZKsync-specific compilers (`zksolc`, `zkvyper`).
+
+This enables development with **Foundry**, **Hardhat**, or **Remix** directly,
+without requiring [plugins](/zksync-network/tooling/hardhat/plugins/hardhat-zksync) or [custom versions](/zksync-network/tooling/foundry/overview).
+
+### Main Features
+
+- **EVM Bytecode Support** — Run unmodified EVM bytecode without recompilation.
+- **Tooling Compatibility** — Use standard Ethereum development tools out of the box.
+- **Address Derivation Consistency** — `create` and `create2` behave identically to the EVM.
+- **Predeployed Contracts** — Includes `create2`, `multicall3`, and `singletonFactory` (ERC-2470).
+  See the [protocol documentation](/zksync-protocol/era-vm/evm-interpreter/pre-deployed-contracts) for a complete list.
+
+### Limitations
+
+- **Debugging** — EVM-compatible debugging tools are not yet supported due to EraVM-specific internals.
+- **Gas Model** — EVM gas rules are emulated; actual costs follow the EraVM model. See [EVM gas interpretation](/zksync-protocol/era-vm/evm-interpreter/evm-gas-interpretation).
+- **Unsupported Opcodes** — The same opcodes as in EraVM remain unsupported: `CALLCODE`, `SELFDESTRUCT`, `BLOBHASH`, `BLOBBASEFEE`.
+- **Transaction Costs** — Bytecode translation introduces overhead, typically increasing costs by 1.5×–4× depending on execution complexity.
+
+Learn more about [differences from Ethereum (Cancun)](/zksync-protocol/era-vm/evm-interpreter/evm-differences).
+
+### Considerations for Developers
+
+The EVM interpreter allows developers to use familiar workflows without custom compilers or plugins.
+However, the translated execution model incurs higher gas costs. For production deployments, compiling
+contracts to native EraVM bytecode using `zksolc` or `zkvyper` is recommended for optimal performance and efficiency.

….zksync-network/60.ecosystem/00.index.md …k/25.zksync-era/60.ecosystem/00.index.mdcontent/00.zksync-network/60.ecosystem/00.index.md renamed to content/00.zksync-network/25.zksync-era/60.ecosystem/00.index.md content/00.zksync-network/60.ecosystem/00.index.md renamed to content/00.zksync-network/25.zksync-era/60.ecosystem/00.index.md

@@ -12,71 +12,71 @@ To see a wider list of the ecosystem, check out [ZKsync Era on DappRadar](https:
   ---
   title: Wallets
   icon: i-heroicons-wallet-solid
-  to: /zksync-network/ecosystem/wallets
+  to: /zksync-network/zksync-era/ecosystem/wallets
   ---
   Access and manage your assets seamlessly with secure and interoperable wallets.
   ::
   ::card
   ---
   title: Data Indexers
   icon: i-heroicons-circle-stack-solid
-  to: /zksync-network/ecosystem/data-indexers
+  to: /zksync-network/zksync-era/ecosystem/data-indexers
   ---
   Harness the power of enhanced data retrieval to facilitate rich query capabilities.
   ::
   ::card
   ---
   title: Node Providers
   icon: i-heroicons-server-solid
-  to: /zksync-network/ecosystem/node-providers
+  to: /zksync-network/zksync-era/ecosystem/node-providers
   ---
   Connect to ZKsync Era reliably with robust and scalable node services.
   ::
   ::card
   ---
   title: Marketplaces
   icon: i-heroicons-shopping-bag-solid
-  to: /zksync-network/ecosystem/nft-marketplaces
+  to: /zksync-network/zksync-era/ecosystem/nft-marketplaces
   ---
   Explore digital goods with dynamic NFT marketplaces, fostering unique collectible exchanges.
   ::
   ::card
   ---
   title: Oracles
   icon: i-heroicons-adjustments-horizontal-solid
-  to: /zksync-network/ecosystem/oracles
+  to: /zksync-network/zksync-era/ecosystem/oracles
   ---
   Integrate real-world data securely to enhance application functionalities.
   ::
   ::card
   ---
   title: Bridges
   icon: i-heroicons-cursor-arrow-ripple-16-solid
-  to: /zksync-network/ecosystem/bridges
+  to: /zksync-network/zksync-era/ecosystem/bridges
   ---
   Experience seamless asset transfers between different blockchain ecosystems
   ::
   ::card
   ---
   title: Faucets
   icon: i-heroicons-currency-dollar-solid
-  to: /zksync-network/ecosystem/network-faucets
+  to: /zksync-network/zksync-era/ecosystem/network-faucets
   ---
   Get free test tokens for development purposes in the ZKsync test network.
   ::
   ::card
   ---
   title: Monitoring
   icon: i-heroicons-chart-bar-solid
-  to: /zksync-network/ecosystem/monitoring
+  to: /zksync-network/zksync-era/ecosystem/monitoring
   ---
   Keep track of network operations with our comprehensive monitoring tools.
   ::
   ::card
   ---
   title: Paymaster Service
   icon: i-heroicons-banknotes-16-solid
-  to: /zksync-network/ecosystem/paymasters
+  to: /zksync-network/zksync-era/ecosystem/paymasters
   ---
   Discover the paymasters solutions available on ZKsync.
   ::

…ksync-network/60.ecosystem/10.bridges.md …25.zksync-era/60.ecosystem/10.bridges.mdcontent/00.zksync-network/60.ecosystem/10.bridges.md renamed to content/00.zksync-network/25.zksync-era/60.ecosystem/10.bridges.md content/00.zksync-network/60.ecosystem/10.bridges.md renamed to content/00.zksync-network/25.zksync-era/60.ecosystem/10.bridges.md

@@ -7,13 +7,6 @@ Bridges are pivotal in enhancing interoperability between different networks or
 data transfer. In this section, we delve into various bridge solutions integrated within the ZKsync ecosystem, providing
 developers and users with diverse options for cross-chain or cross-layer interactions.
 
-::callout{icon="i-heroicons-information-circle-16-solid" color="green"}
-For an extended list of bridging options within
-the ZKsync ecosystem, feel free to explore the
-[bridges](https://zksync.dappradar.com/ecosystem?category=defi_bridge&page=1)
-category on Dappradar.
-::
-
 ## ZKsync Portal Bridge
 
 The [Portal Bridge](https://bridge.zksync.io/) on ZKsync provides a gateway for assets between Ethereum and the ZKsync

…sync-network/60.ecosystem/100.wallets.md …5.zksync-era/60.ecosystem/100.wallets.mdcontent/00.zksync-network/60.ecosystem/100.wallets.md renamed to content/00.zksync-network/25.zksync-era/60.ecosystem/100.wallets.md content/00.zksync-network/60.ecosystem/100.wallets.md renamed to content/00.zksync-network/25.zksync-era/60.ecosystem/100.wallets.md

@@ -7,25 +7,13 @@ The following wallets are known for their robustness, ease of use, and compatibi
 Era. These wallets offer various features including, but not limited to, DeFi, NFT management,
 and multiple chain support.
 
-::callout{icon="i-heroicons-information-circle-16-solid" color="green"}
-For an extended list of wallets within the ZKsync ecosystem, feel free to explore the
-[wallets](https://zksync.dappradar.com/ecosystem?category=non_dapps_wallets&page=1)
-category on Dappradar.
-::
-
 ## BlockWallet
 
 [BlockWallet](https://blockwallet.io/networks/zksync-wallet) is designed for ZKsync users seeking
 a decentralized wallet in a user-friendly package.
 
 **Availability**: Chrome extension
 
-## Clave
-
-[Clave](https://getclave.io/) is a ZKsync native non-custodial smart wallet powered by account
-abstraction and the hardware-level security elements to simplify the onchain experience for the
-next billions.
-
 **Availability**: App Store (IOS and MacOS), Google Play Store
 
 ## Echoo