Summary: Pi Network added to crypto listings

Why It Matters: This shows a new crypto is now supported.

What Changed:

• Removed "Switch site" from the top left.
• Changed "Express buy" to "Buy and Sell".
• Removed "Marketplace Create a bot".
• Removed "X Layer network", "Explore", "Enter the world of Web3", "X Layer", "Ignite your creativity", "Mainnet explorer", "Explore mainnet on-chain data", "Testnet explorer", "Explore testnet on-chain data", "X Layer ecosystem", "Explore DApps on X Layer", "Developers", "Expand without limits", "Developer docs", "Explore our protocol documents", "Testnet faucet", "Get OKB on testnet", "Testnet bridge", "X Layer testnet bridge", "Oracle", "Get price data", "GitHub", "Explore X Layer repositories", "Official DApps", "Infrastructure products", and "Bridge Connect Ethereum and X Layer".
• Added "Dual Investment" under "Earn".
• Changed "OKB" to "xBTC" under "Products".
• Added "Web3" under "Products".
• Added "OKTC" under "Products" in the footer.
• Added "Trading bots" under "Products" in the footer.
• Changed "V5 API" to "API" in the footer.
• Changed "Fee schedule" to "CEX fee schedule" in the footer.
• Added "P2P Merchant application" in the footer.
• Added "PI to USD" under "Crypto calculator".
• Added "PI USDT" under "Trade".
• Added "Pi Network price" under "Prices".
• Added "Pi Network price prediction" under "Price prediction".
• Added "How to buy Pi Network" under "How to buy crypto".