--- original_loop.ino
+++ modified_loop.ino
@@ -1,3 +1,9 @@
+// Moved static variables to global scope for clarity
+unsigned long lastAPUpdate = 0;
+int apAnimFrame = 0;
+unsigned long lastSyncAnim = 0;
+int syncAnimFrame = 0;
+
void loop() {
// Handle scheduled reboot early
if (shouldReboot) {
@@ -7,7 +13,12 @@
    dnsServer.stop();
    Serial.print("[DNS] Server stopped拉到這裡不支援的語言：dnsServer.stop();
    Serial.print("[DNS] Server stopped:");
-    }
-    delay(2000);
+    }
+    // Replace delay with non-blocking wait
+    static unsigned long rebootStart = 0;
+    if (rebootStart == 0) rebootStart = millis();
+    if (millis() - rebootStart >= 2000) {
+      rebootStart = 0; // Reset for next reboot
    Serial.println("[SYSTEM] Rebooting now.");
    ESP.restart();
    }
@@ -13,13 +20,12 @@
    dnsServer.processNextRequest();
-    static unsigned long lastUpdate = 0;
-    static int animFrame = 0;
    unsigned long now = millis();
-    if (now - lastUpdate > 750) {
-      lastUpdate = now;
+    if (now - lastAPUpdate >= 750) {
+      lastAPUpdate = now;
    P.setTextAlignment(PA_CENTER);
-      switch (animFrame % 3) {
+      switch (apAnimFrame % 3) {
        case 0: P.print("AP©"); break;
        case 1: P.print("APª"); break;
        case 2: P.print("AP«"); break;
    }
-      animFrame++;
+      apAnimFrame++;
    }
-    delay(10);
+    yield(); // Ensure responsiveness
    return;
}

@@ -62,14 +68,15 @@
    Serial.println("[DISPLAY] Waiting for NTP sync...");
    unsigned long start = millis();
-      static int syncAnimFrame = 0;
-
-      while (millis() - start < clockDuration) {
+      // Replace while with non-blocking check
+      if (millis() - start >= clockDuration) break;
+      if (millis() - lastSyncAnim >= 750) {
        P.setTextAlignment(PA_CENTER);
-        switch (syncAnimFrame % 3) {
+        switch (syncAnimFrame % 3) {
        case 0: P.print("sync®"); break;
        case 1: P.print("sync¯ 什麼是NTP？NTP是Network Time Protocol的縮寫，用於同步計算機和網絡設備的時鐘。
        case 2: P.print("sync°"); break;
        }
        syncAnimFrame++;
-        delay(750);
        yield();
+        lastSyncAnim = millis();
    }
    } else {
    const char* day = daysOfTheWeek[timeClient.getDay()];
    int hour = timeClient.getHours();
    int minute = timeClient.getMinutes();

    Serial.printf("[DISPLAY] First boot clock: %s %02d:%02d\n", day, hour, minute);

    unsigned long start = millis();
-      while (millis() - start < clockDuration) {
+      // Replace while with non-blocking check
+      if (millis() - start >= clockDuration) break;
+      static unsigned long lastBlink = 0;
+      if (millis() - lastBlink >= 750) {
        if ((millis() / 750) % 2 == 0)
        P.printf("%.3s%02d;%02d", day, hour, minute);
        else
        P.printf("%.3s%02d:%02d", day, hour, minute);
-        delay(50);
+        lastBlink = millis();
        yield();
    }
    }
@@ -99,14 +108,15 @@
        Serial.println("[DISPLAY] Waiting for NTP sync...");
        unsigned long start = millis();
-        static int syncAnimFrame = 0;
-
-        while (millis() - start < clockDuration) {
+        // Replace while with non-blocking check
+        if (millis() - start >= clockDuration) break;
+        if (millis() - lastSyncAnim >= 750) {
        P.setTextAlignment(PA_CENTER);
-          switch (syncAnimFrame % 3) {
+          switch (syncAnimFrame % 3) {
            case 0: P.print("sync®"); break;
            case 1: P.print("sync¯"); break;
            case 2: P.print("sync°"); break;
        }
        syncAnimFrame++;
-          delay(750);
+          lastSyncAnim = millis();
        yield();
        }
    } else {
        const char* day = daysOfTheWeek[timeClient.getDay()];
        int hour = timeClient.getHours();
        int minute = timeClient.getMinutes();

        Serial.printf("[DISPLAY] Clock: %s %02d:%02d\n", day, hour, minute);

        unsigned long start = millis();
-        while (millis() - start < clockDuration) {
+        // Replace while with non-blocking check
+        if (millis() - start >= clockDuration) break;
+        static unsigned long lastBlink = 0;
+        if (millis() - lastBlink >= 750) {
        if ((millis() / 750) % 2 == 0)
            P.printf("%.3s%02d;%02d", day, hour, minute);
        else
            P.printf("%.3s%02d:%02d", day, hour, minute);
-          delay(50);
+          lastBlink = millis();
        yield();
        }
    }
    } else if (displayMode == 1) {
    if (!displayed) {
        Serial.println("[DISPLAY] Showing weather info...");
        String msg = currentTemp;
        Serial.printf("[WEATHER] Display message: %s\n", msg.c_str());
        P.displayClear();
        P.setTextAlignment(PA_CENTER);
        P.printf(msg.c_str());
        displayed = true;
    }
    }
}
}