Checkpoint: 修复钱包连接Modal问题：1) 将showWalletModal状态提升到Home主组件；2) Modal通过Portal渲染到document.body，脱离导航栏backdropFilter层叠上下文；3) EVMPurchasePanel内嵌WalletSelector替换为统一的Connect Wallet按钮，触发同一个顶层Modal；4) 停止旧预售合约0xc65e7a27...

client/src/pages/Home.tsx

@@ -4,6 +4,7 @@
 // Colors: Amber Gold #f0b429 | Quantum Blue #00d4ff | Deep Black #0a0a0f
 
 import { useState, useEffect, useCallback, useRef, useMemo } from "react";
+import { createPortal } from "react-dom";
 import { toast } from "sonner";
 import { Link } from "wouter";
 import { useWallet } from "@/hooks/useWallet";
@@ -315,7 +316,7 @@ function TRC20Panel({ usdtAmount, lang, connectedAddress, onConnectWallet }: { u
 }
 
 // ─── EVM Purchase Panel ─────────────────────────────────────────────────────
-function EVMPurchasePanel({ network, lang, wallet }: { network: "BSC" | "ETH"; lang: Lang; wallet: WalletHookReturn }) {
+function EVMPurchasePanel({ network, lang, wallet, onOpenWalletModal }: { network: "BSC" | "ETH"; lang: Lang; wallet: WalletHookReturn; onOpenWalletModal?: () => void }) {
   const { t } = useTranslation(lang);
   const { purchaseState, buyWithUSDT, reset, calcTokens, getUsdtBalance } = usePresale(wallet, network);
   const [usdtInput, setUsdtInput] = useState("100");
@@ -361,22 +362,18 @@ function EVMPurchasePanel({ network, lang, wallet }: { network: "BSC" | "ETH"; l
     return (
       <div className="space-y-4">
         <p className="text-sm text-white/60 text-center">{t("buy_connect_msg")}</p>
-        <WalletSelector
-          lang={lang}
-          connectedAddress={wallet.address ?? undefined}
-          onAddressDetected={async (addr, _network, rawProvider) => {
-            // KEY FIX: call connectWithProvider to sync wallet state immediately
-            // Do NOT rely on accountsChanged event — it only fires for window.ethereum listeners
-            if (rawProvider) {
-              await wallet.connectWithProvider(rawProvider, addr);
-            } else {
-              // Manual address entry — no provider available, set address-only state
-              await wallet.connectWithProvider({ request: async () => [] } as unknown as import("@/hooks/useWallet").EthProvider, addr);
-            }
-            toast.success(lang === "zh" ? `已连接: ${addr.slice(0, 6)}...${addr.slice(-4)}` : `Connected: ${addr.slice(0, 6)}...${addr.slice(-4)}`);
-          }}
-          compact
-        />
+        <button
+          onClick={() => onOpenWalletModal?.()}
+          className="w-full py-3 rounded-xl text-base font-bold transition-all hover:opacity-90 flex items-center justify-center gap-2"
+          style={{ background: "linear-gradient(135deg, rgba(240,180,41,0.9) 0%, rgba(255,215,0,0.9) 100%)", color: "#0a0a0f", fontFamily: "'Space Grotesk', sans-serif", boxShadow: "0 0 16px rgba(240,180,41,0.3)" }}
+        >
+          <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5">
+            <path d="M21 12V7H5a2 2 0 0 1 0-4h14v4"/>
+            <path d="M3 5v14a2 2 0 0 0 2 2h16v-5"/>
+            <path d="M18 12a2 2 0 0 0 0 4h4v-4z"/>
+          </svg>
+          {lang === "zh" ? "连接钱包" : "Connect Wallet"}
+        </button>
         <div className="text-xs text-white/40 text-center">{t("buy_connect_hint")}</div>
       </div>
     );
@@ -809,10 +806,9 @@ function ChatSupport({ lang }: { lang: Lang }) {
 
 // ─── Navbar Wallet Button ─────────────────────────────────────────────────────
 type WalletHookReturn = ReturnType<typeof useWallet>;
-function NavWalletButton({ lang, wallet }: { lang: Lang; wallet: WalletHookReturn }) {
+function NavWalletButton({ lang, wallet, showWalletModal, setShowWalletModal }: { lang: Lang; wallet: WalletHookReturn; showWalletModal: boolean; setShowWalletModal: (v: boolean) => void }) {
   const { t } = useTranslation(lang);
   const [showMenu, setShowMenu] = useState(false);
-  const [showWalletModal, setShowWalletModal] = useState(false);
   const menuRef = useRef<HTMLDivElement>(null);
 
   useEffect(() => {
@@ -823,35 +819,10 @@ function NavWalletButton({ lang, wallet }: { lang: Lang; wallet: WalletHookRetur
     return () => document.removeEventListener("mousedown", handleClick);
   }, []);
 
-  // Detect mobile browser
-  const isMobile = typeof window !== "undefined" && /Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
-  // Detect if running inside a wallet's in-app browser (window.ethereum is injected)
-  const isInWalletBrowser = typeof window !== "undefined" && !!((window as unknown as Record<string, unknown>).ethereum);
-
-  // Handle connect button click — show wallet selector modal
-  const handleConnectClick = async () => {
-    // On mobile AND inside a wallet's in-app browser: try direct connect first
-    // (window.ethereum is injected by the wallet app, so direct connect works)
-    if (isMobile && isInWalletBrowser) {
-      const result = await wallet.connect();
-      if (!result.success) {
-        // If direct connect failed, show modal as fallback
+  // Handle connect button click — always show wallet selector modal
+  // Both desktop and mobile users see the modal to choose their wallet
+  const handleConnectClick = () => {
     setShowWalletModal(true);
-      }
-      return;
-    }
-    // On mobile browser (NOT in wallet app): show modal with DeepLink guide
-    if (isMobile) {
-      setShowWalletModal(true);
-      return;
-    }
-    // On desktop: first try direct connect (works if wallet is already set up and locked)
-    const result = await wallet.connect();
-    if (!result.success && result.error) {
-      // If direct connect failed, show the wallet selector modal for guided setup
-      setShowWalletModal(true);
-      toast.error(result.error, { duration: 6000 });
-    }
   };
 
   if (!wallet.isConnected) {
@@ -871,79 +842,6 @@ function NavWalletButton({ lang, wallet }: { lang: Lang; wallet: WalletHookRetur
           {wallet.isConnecting ? t("nav_connecting") : t("nav_connect")}
         </button>
 
-        {/* Wallet Connection Modal */}
-        {showWalletModal && (
-          <div
-            className="fixed inset-0 z-[100] flex items-end sm:items-center justify-center sm:p-4"
-            style={{ background: "rgba(0,0,0,0.85)", backdropFilter: "blur(8px)" }}
-            onClick={(e) => { if (e.target === e.currentTarget) setShowWalletModal(false); }}
-          >
-            <div
-              className="w-full sm:max-w-md rounded-t-2xl sm:rounded-2xl p-5 relative overflow-y-auto"
-              style={{ background: "rgba(10,10,20,0.98)", border: "1px solid rgba(240,180,41,0.3)", boxShadow: "0 0 40px rgba(240,180,41,0.15)", maxHeight: "85vh" }}
-            >
-              {/* Close button */}
-              <button
-                onClick={() => setShowWalletModal(false)}
-                className="absolute top-4 right-4 text-white/40 hover:text-white/80 transition-colors"
-              >
-                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
-                  <path d="M18 6L6 18M6 6l12 12"/>
-                </svg>
-              </button>
-
-              <h3 className="text-lg font-bold text-white mb-1" style={{ fontFamily: "'Space Grotesk', sans-serif" }}>
-                {lang === "zh" ? "连接钱包" : "Connect Wallet"}
-              </h3>
-              {!isMobile && (
-                <p className="text-xs text-white/40 mb-4">
-                  {lang === "zh"
-                    ? "选择您的钱包进行连接，或手动输入地址"
-                    : "Select your wallet to connect, or enter address manually"}
-                </p>
-              )}
-
-              {/* MetaMask initialization guide — desktop only */}
-              {!isMobile && (
-                <div
-                  className="rounded-xl p-3 mb-4"
-                  style={{ background: "rgba(240,180,41,0.06)", border: "1px solid rgba(240,180,41,0.2)" }}
-                >
-                  <p className="text-xs text-amber-300/80 leading-relaxed">
-                    {lang === "zh"
-                      ? "💡 首次使用 MetaMask？请先打开 MetaMask 扩展完成初始化（创建或导入钱包），完成后点击下方「刷新」按钮重新检测。"
-                      : "💡 First time using MetaMask? Open the MetaMask extension and complete setup (create or import a wallet), then click Refresh below to re-detect."}
-                  </p>
-                </div>
-              )}
-              {isMobile && <div className="mb-3" />}
-
-              <WalletSelector
-                lang={lang}
-                compact={false}
-                showTron={false}
-                connectedAddress={undefined}
-                onAddressDetected={async (addr, _network, rawProvider) => {
-                  // KEY FIX: use connectWithProvider() to directly sync wallet state
-                  // This avoids calling connect() again which would use detectProvider()
-                  // and might fail if the wallet injects to a different window property (e.g. OKX -> window.okxwallet)
-                  if (rawProvider) {
-                    await wallet.connectWithProvider(rawProvider, addr);
-                  } else {
-                    // Fallback for manual address entry (no provider)
-                    const result = await wallet.connect();
-                    if (!result.success) {
-                      // Still mark as connected with address only
-                      await wallet.connectWithProvider({ request: async () => [] } as unknown as import("@/hooks/useWallet").EthProvider, addr);
-                    }
-                  }
-                  setShowWalletModal(false);
-                  toast.success(lang === "zh" ? `钱包已连接: ${addr.slice(0, 6)}...${addr.slice(-4)}` : `Wallet connected: ${addr.slice(0, 6)}...${addr.slice(-4)}`);
-                }}
-              />
-            </div>
-          </div>
-        )}
       </>
     );
   }
@@ -1042,6 +940,8 @@ export default function Home() {
 
   // 钱包状态提升到顶层，共享给NavWalletButton和EVMPurchasePanel
   const wallet = useWallet();
+  // showWalletModal提升到顶层，供NavWalletButton和EVMPurchasePanel共用
+  const [showWalletModal, setShowWalletModal] = useState(false);
 
   const networks: NetworkTab[] = ["BSC", "ETH", "TRON"];
 
@@ -1081,7 +981,7 @@ export default function Home() {
             </span>
           </Link>
           <LangToggle lang={lang} setLang={setLang} />
-          <NavWalletButton lang={lang} wallet={wallet} />
+          <NavWalletButton lang={lang} wallet={wallet} showWalletModal={showWalletModal} setShowWalletModal={setShowWalletModal} />
         </div>
       </nav>
 
@@ -1266,8 +1166,8 @@ export default function Home() {
                     </p>
                   </div>
                 )}
-                {activeNetwork === "BSC" && <EVMPurchasePanel network="BSC" lang={lang} wallet={wallet} />}
-                {activeNetwork === "ETH" && <EVMPurchasePanel network="ETH" lang={lang} wallet={wallet} />}
+                {activeNetwork === "BSC" && <EVMPurchasePanel network="BSC" lang={lang} wallet={wallet} onOpenWalletModal={() => setShowWalletModal(true)} />}
+                {activeNetwork === "ETH" && <EVMPurchasePanel network="ETH" lang={lang} wallet={wallet} onOpenWalletModal={() => setShowWalletModal(true)} />}
                 {activeNetwork === "TRON" && (
                   <div className="space-y-4">
                     <div className="space-y-2">
@@ -1386,6 +1286,64 @@ export default function Home() {
       {/* ── Chat Support Widget ── */}
       <ChatSupport lang={lang} />
 
+      {/* ── Global Wallet Connection Modal (Portal) ── */}
+      {showWalletModal && createPortal(
+        <div
+          className="fixed inset-0 z-[9999] flex items-end sm:items-center justify-center sm:p-4"
+          style={{ background: "rgba(0,0,0,0.85)", backdropFilter: "blur(8px)" }}
+          onClick={(e) => { if (e.target === e.currentTarget) setShowWalletModal(false); }}
+        >
+          <div
+            className="w-full sm:max-w-md rounded-t-2xl sm:rounded-2xl p-5 relative overflow-y-auto"
+            style={{ background: "rgba(10,10,20,0.98)", border: "1px solid rgba(240,180,41,0.3)", boxShadow: "0 0 40px rgba(240,180,41,0.15)", maxHeight: "85vh" }}
+          >
+            <button
+              onClick={() => setShowWalletModal(false)}
+              className="absolute top-4 right-4 text-white/40 hover:text-white/80 transition-colors"
+            >
+              <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                <path d="M18 6L6 18M6 6l12 12"/>
+              </svg>
+            </button>
+            <h3 className="text-lg font-bold text-white mb-1" style={{ fontFamily: "'Space Grotesk', sans-serif" }}>
+              {lang === "zh" ? "连接钱包" : "Connect Wallet"}
+            </h3>
+            {!/Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) && (
+              <>
+                <p className="text-xs text-white/40 mb-4">
+                  {lang === "zh" ? "选择您的钱包进行连接，或手动输入地址" : "Select your wallet to connect, or enter address manually"}
+                </p>
+                <div className="rounded-xl p-3 mb-4" style={{ background: "rgba(240,180,41,0.06)", border: "1px solid rgba(240,180,41,0.2)" }}>
+                  <p className="text-xs text-amber-300/80 leading-relaxed">
+                    {lang === "zh"
+                      ? "💡 首次使用 MetaMask？请先打开 MetaMask 扩展完成初始化（创建或导入钱包），完成后点击下方「刷新」按鈕重新检测。"
+                      : "💡 First time using MetaMask? Open the MetaMask extension and complete setup (create or import a wallet), then click Refresh below to re-detect."}
+                  </p>
+                </div>
+              </>
+            )}
+            <WalletSelector
+              lang={lang}
+              compact={false}
+              showTron={false}
+              connectedAddress={undefined}
+              onAddressDetected={async (addr, _network, rawProvider) => {
+                if (rawProvider) {
+                  await wallet.connectWithProvider(rawProvider, addr);
+                } else {
+                  const result = await wallet.connect();
+                  if (!result.success) {
+                    await wallet.connectWithProvider({ request: async () => [] } as unknown as import("@/hooks/useWallet").EthProvider, addr);
+                  }
+                }
+                setShowWalletModal(false);
+                toast.success(lang === "zh" ? `钱包已连接: ${addr.slice(0, 6)}...${addr.slice(-4)}` : `Wallet connected: ${addr.slice(0, 6)}...${addr.slice(-4)}`);
+              }}
+            />
+          </div>
+        </div>
+      , document.body)}
+
       <style>{`
         @keyframes fadeInDown {
           from { opacity: 0; transform: translateY(-10px); }