diff --git a/src/GUI/comm_panel.py b/src/GUI/comm_panel.py
index 3a41226..cf79be1 100644
--- a/src/GUI/comm_panel.py
+++ b/src/GUI/comm_panel.py
@@ -1,10 +1,78 @@
 #!/usr/bin/env python3
-from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLabel, 
-                            QPushButton, QLineEdit, QComboBox)
+from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLabel,
+                            QPushButton, QLineEdit, QComboBox, QApplication)
+from PyQt6.QtGui import QFont
 from PyQt6.QtCore import pyqtSignal
 import glob
 import os
 
+
+def _get_font_scale():
+    app = QApplication.instance()
+    if app is None:
+        return 1.0
+    scale = app.property("font_scale")
+    try:
+        return float(scale) if scale is not None else 1.0
+    except (TypeError, ValueError):
+        return 1.0
+
+
+def _scale_stylesheet_font_sizes(stylesheet, scale):
+    if not stylesheet or 'font-size' not in stylesheet:
+        return stylesheet
+
+    import re
+
+    def repl(match):
+        size = float(match.group(1))
+        unit = match.group(2)
+        scaled = max(1.0, size * scale)
+        text = f"{scaled:.2f}".rstrip('0').rstrip('.')
+        return f"font-size: {text}{unit}"
+
+    return re.sub(r'font-size\s*:\s*([0-9]+(?:\.[0-9]+)?)\s*(px|pt)', repl, stylesheet)
+
+
+def _set_scaled_stylesheet(widget, stylesheet):
+    widget._base_stylesheet = stylesheet
+    scaled = _scale_stylesheet_font_sizes(stylesheet, _get_font_scale())
+    widget._applied_stylesheet = scaled
+    widget.setStyleSheet(scaled)
+
+
+def _reapply_scaled_stylesheet(widget):
+    current_stylesheet = widget.styleSheet()
+    base_stylesheet = getattr(widget, '_base_stylesheet', None)
+    applied_stylesheet = getattr(widget, '_applied_stylesheet', None)
+
+    if current_stylesheet != applied_stylesheet:
+        base_stylesheet = current_stylesheet
+        widget._base_stylesheet = base_stylesheet
+
+    if base_stylesheet is not None:
+        scaled = _scale_stylesheet_font_sizes(base_stylesheet, _get_font_scale())
+        widget._applied_stylesheet = scaled
+        if current_stylesheet != scaled:
+            widget.setStyleSheet(scaled)
+
+
+def _apply_scaled_font(widget):
+    base_font = getattr(widget, '_base_font_for_scale', None)
+    if base_font is None:
+        app = QApplication.instance()
+        app_base_font = app.property("base_app_font") if app else None
+        base_font = QFont(app_base_font) if app_base_font is not None else QFont(widget.font())
+        widget._base_font_for_scale = QFont(base_font)
+
+    scaled_font = QFont(base_font)
+    scale = _get_font_scale()
+    if base_font.pointSizeF() > 0:
+        scaled_font.setPointSizeF(max(1.0, base_font.pointSizeF() * scale))
+    elif base_font.pointSize() > 0:
+        scaled_font.setPointSize(max(1, int(round(base_font.pointSize() * scale))))
+    widget.setFont(scaled_font)
+
 class CommPanel(QWidget):
     """通讯设置面板类"""
     
@@ -26,6 +94,7 @@ class CommPanel(QWidget):
         self.ws_connections = []
         self.serial_connections = []
         self._init_ui()
+        self.apply_font_scale()
     
     def _init_ui(self):
         """初始化UI"""
@@ -35,7 +104,7 @@ class CommPanel(QWidget):
         
         # ========== UDP MAVLink 區域 ==========
         udp_title = QLabel("UDP")
-        udp_title.setStyleSheet("""
+        _set_scaled_stylesheet(udp_title, """
             color: #DDD;
             font-size: 14px;
             font-weight: bold;
@@ -60,7 +129,7 @@ class CommPanel(QWidget):
         self.udp_ip_input = QLineEdit()
         self.udp_ip_input.setText("127.0.0.1")
         self.udp_ip_input.setPlaceholderText("IP")
-        self.udp_ip_input.setStyleSheet("""
+        _set_scaled_stylesheet(self.udp_ip_input, """
             QLineEdit {
                 background-color: #333;
                 color: #DDD;
@@ -74,7 +143,7 @@ class CommPanel(QWidget):
         self.udp_port_input.setText("14550")
         self.udp_port_input.setPlaceholderText("Port")
         self.udp_port_input.setFixedWidth(80)
-        self.udp_port_input.setStyleSheet("""
+        _set_scaled_stylesheet(self.udp_port_input, """
             QLineEdit {
                 background-color: #333;
                 color: #DDD;
@@ -86,7 +155,7 @@ class CommPanel(QWidget):
         
         add_udp_btn = QPushButton("添加")
         add_udp_btn.clicked.connect(self._handle_add_udp)
-        add_udp_btn.setStyleSheet("""
+        _set_scaled_stylesheet(add_udp_btn, """
             QPushButton {
                 background-color: #4CAF50;
                 color: white;
@@ -98,9 +167,13 @@ class CommPanel(QWidget):
             QPushButton:hover { background-color: #45a049; }
         """)
         
-        add_udp_layout.addWidget(QLabel("IP:", styleSheet="color: #DDD;"))
+        ip_label = QLabel("IP:")
+        _set_scaled_stylesheet(ip_label, "color: #DDD;")
+        add_udp_layout.addWidget(ip_label)
         add_udp_layout.addWidget(self.udp_ip_input)
-        add_udp_layout.addWidget(QLabel("Port:", styleSheet="color: #DDD;"))
+        port_label = QLabel("Port:")
+        _set_scaled_stylesheet(port_label, "color: #DDD;")
+        add_udp_layout.addWidget(port_label)
         add_udp_layout.addWidget(self.udp_port_input)
         add_udp_layout.addWidget(add_udp_btn)
         
@@ -113,7 +186,7 @@ class CommPanel(QWidget):
         
         # ========== Serial 區域 ==========
         serial_title = QLabel("Serial")
-        serial_title.setStyleSheet("""
+        _set_scaled_stylesheet(serial_title, """
             color: #DDD;
             font-size: 14px;
             font-weight: bold;
@@ -136,7 +209,7 @@ class CommPanel(QWidget):
         add_serial_layout.setContentsMargins(0, 0, 0, 0)
         
         self.serial_port_combo = QComboBox()
-        self.serial_port_combo.setStyleSheet("""
+        _set_scaled_stylesheet(self.serial_port_combo, """
             QComboBox {
                 background-color: #333;
                 color: #DDD;
@@ -160,7 +233,7 @@ class CommPanel(QWidget):
         refresh_ports_btn.setFixedWidth(35)
         refresh_ports_btn.clicked.connect(self._refresh_serial_ports)
         refresh_ports_btn.setToolTip("重新掃描串口")
-        refresh_ports_btn.setStyleSheet("""
+        _set_scaled_stylesheet(refresh_ports_btn, """
             QPushButton {
                 background-color: #444;
                 color: #DDD;
@@ -176,7 +249,7 @@ class CommPanel(QWidget):
         self.serial_baudrate_combo.addItems(['9600', '19200', '38400', '57600', '115200'])
         self.serial_baudrate_combo.setCurrentText('57600')
         self.serial_baudrate_combo.setFixedWidth(100)
-        self.serial_baudrate_combo.setStyleSheet("""
+        _set_scaled_stylesheet(self.serial_baudrate_combo, """
             QComboBox {
                 background-color: #333;
                 color: #DDD;
@@ -197,7 +270,7 @@ class CommPanel(QWidget):
         
         add_serial_btn = QPushButton("添加")
         add_serial_btn.clicked.connect(self._handle_add_serial)
-        add_serial_btn.setStyleSheet("""
+        _set_scaled_stylesheet(add_serial_btn, """
             QPushButton {
                 background-color: #4CAF50;
                 color: white;
@@ -209,10 +282,14 @@ class CommPanel(QWidget):
             QPushButton:hover { background-color: #45a049; }
         """)
         
-        add_serial_layout.addWidget(QLabel("Port:", styleSheet="color: #DDD;"))
+        serial_port_label = QLabel("Port:")
+        _set_scaled_stylesheet(serial_port_label, "color: #DDD;")
+        add_serial_layout.addWidget(serial_port_label)
         add_serial_layout.addWidget(self.serial_port_combo)
         add_serial_layout.addWidget(refresh_ports_btn)
-        add_serial_layout.addWidget(QLabel("Baud:", styleSheet="color: #DDD;"))
+        baud_label = QLabel("Baud:")
+        _set_scaled_stylesheet(baud_label, "color: #DDD;")
+        add_serial_layout.addWidget(baud_label)
         add_serial_layout.addWidget(self.serial_baudrate_combo)
         add_serial_layout.addWidget(add_serial_btn)
         
@@ -225,7 +302,7 @@ class CommPanel(QWidget):
         
         # ========== WebSocket 區域 ==========
         ws_title = QLabel("WebSocket")
-        ws_title.setStyleSheet("""
+        _set_scaled_stylesheet(ws_title, """
             color: #DDD;
             font-size: 14px;
             font-weight: bold;
@@ -249,7 +326,7 @@ class CommPanel(QWidget):
         
         self.ws_url_input = QLineEdit()
         self.ws_url_input.setPlaceholderText("host")
-        self.ws_url_input.setStyleSheet("""
+        _set_scaled_stylesheet(self.ws_url_input, """
             QLineEdit {
                 background-color: #333;
                 color: #DDD;
@@ -261,7 +338,7 @@ class CommPanel(QWidget):
         
         add_ws_btn = QPushButton("添加")
         add_ws_btn.clicked.connect(self._handle_add_ws)
-        add_ws_btn.setStyleSheet("""
+        _set_scaled_stylesheet(add_ws_btn, """
             QPushButton {
                 background-color: #4CAF50;
                 color: white;
@@ -273,7 +350,9 @@ class CommPanel(QWidget):
             QPushButton:hover { background-color: #45a049; }
         """)
         
-        add_ws_layout.addWidget(QLabel("URL:", styleSheet="color: #DDD;"))
+        url_label = QLabel("URL:")
+        _set_scaled_stylesheet(url_label, "color: #DDD;")
+        add_ws_layout.addWidget(url_label)
         add_ws_layout.addWidget(self.ws_url_input)
         add_ws_layout.addWidget(add_ws_btn)
         
@@ -437,7 +516,7 @@ class CommPanel(QWidget):
     def create_udp_connection_panel(self, conn):
         """創建 UDP 連接面板"""
         panel = QWidget()
-        panel.setStyleSheet("""
+        _set_scaled_stylesheet(panel, """
             QWidget {
                 background-color: #2A2A2A;
                 border-radius: 6px;
@@ -451,22 +530,22 @@ class CommPanel(QWidget):
         
         # 連接資訊
         info_label = QLabel(f"{conn['name']} - {conn['ip']}:{conn['port']}")
-        info_label.setStyleSheet("color: #DDD; font-size: 12px;")
+        _set_scaled_stylesheet(info_label, "color: #DDD; font-size: 12px;")
         
         # 狀態指示器
         status_label = QLabel("●")
         if conn.get('enabled', False):
-            status_label.setStyleSheet("color: #4CAF50; font-size: 16px;")
+            _set_scaled_stylesheet(status_label, "color: #4CAF50; font-size: 16px;")
             status_label.setToolTip("運行中")
         else:
-            status_label.setStyleSheet("color: #888; font-size: 16px;")
+            _set_scaled_stylesheet(status_label, "color: #888; font-size: 16px;")
             status_label.setToolTip("已停止")
         
         # 控制按鈕
         toggle_btn = QPushButton("停止" if conn.get('enabled', False) else "啟動")
         toggle_btn.setFixedWidth(60)
         toggle_btn.clicked.connect(lambda: self.udp_connection_toggled.emit(conn, toggle_btn, status_label))
-        toggle_btn.setStyleSheet("""
+        _set_scaled_stylesheet(toggle_btn, """
             QPushButton {
                 background-color: #444;
                 color: #DDD;
@@ -481,7 +560,7 @@ class CommPanel(QWidget):
         remove_btn = QPushButton("移除")
         remove_btn.setFixedWidth(60)
         remove_btn.clicked.connect(lambda: self.udp_connection_removed.emit(conn, panel))
-        remove_btn.setStyleSheet("""
+        _set_scaled_stylesheet(remove_btn, """
             QPushButton {
                 background-color: #d32f2f;
                 color: white;
@@ -509,7 +588,7 @@ class CommPanel(QWidget):
     def create_ws_connection_panel(self, conn):
         """創建 WebSocket 連接面板"""
         panel = QWidget()
-        panel.setStyleSheet("""
+        _set_scaled_stylesheet(panel, """
             QWidget {
                 background-color: #2A2A2A;
                 border-radius: 6px;
@@ -523,22 +602,22 @@ class CommPanel(QWidget):
         
         # 連接資訊
         info_label = QLabel(f"{conn['name']} - {conn['url']}")
-        info_label.setStyleSheet("color: #DDD; font-size: 12px;")
+        _set_scaled_stylesheet(info_label, "color: #DDD; font-size: 12px;")
         
         # 狀態指示器
         status_label = QLabel("●")
         if conn.get('enabled', False):
-            status_label.setStyleSheet("color: #4CAF50; font-size: 16px;")
+            _set_scaled_stylesheet(status_label, "color: #4CAF50; font-size: 16px;")
             status_label.setToolTip("運行中")
         else:
-            status_label.setStyleSheet("color: #888; font-size: 16px;")
+            _set_scaled_stylesheet(status_label, "color: #888; font-size: 16px;")
             status_label.setToolTip("已停止")
         
         # 控制按鈕
         toggle_btn = QPushButton("停止" if conn.get('enabled', False) else "啟動")
         toggle_btn.setFixedWidth(60)
         toggle_btn.clicked.connect(lambda: self.ws_connection_toggled.emit(conn, toggle_btn, status_label))
-        toggle_btn.setStyleSheet("""
+        _set_scaled_stylesheet(toggle_btn, """
             QPushButton {
                 background-color: #444;
                 color: #DDD;
@@ -553,7 +632,7 @@ class CommPanel(QWidget):
         remove_btn = QPushButton("移除")
         remove_btn.setFixedWidth(60)
         remove_btn.clicked.connect(lambda: self.ws_connection_removed.emit(conn, panel))
-        remove_btn.setStyleSheet("""
+        _set_scaled_stylesheet(remove_btn, """
             QPushButton {
                 background-color: #d32f2f;
                 color: white;
@@ -605,7 +684,7 @@ class CommPanel(QWidget):
     def create_serial_connection_panel(self, conn):
         """創建 Serial 連接面板"""
         panel = QWidget()
-        panel.setStyleSheet("""
+        _set_scaled_stylesheet(panel, """
             QWidget {
                 background-color: #2A2A2A;
                 border-radius: 6px;
@@ -619,22 +698,22 @@ class CommPanel(QWidget):
         
         # 連接資訊
         info_label = QLabel(f"{conn['name']} - {conn['port']} @ {conn['baudrate']}")
-        info_label.setStyleSheet("color: #DDD; font-size: 12px;")
+        _set_scaled_stylesheet(info_label, "color: #DDD; font-size: 12px;")
         
         # 狀態指示器
         status_label = QLabel("●")
         if conn.get('enabled', False):
-            status_label.setStyleSheet("color: #4CAF50; font-size: 16px;")
+            _set_scaled_stylesheet(status_label, "color: #4CAF50; font-size: 16px;")
             status_label.setToolTip("運行中")
         else:
-            status_label.setStyleSheet("color: #888; font-size: 16px;")
+            _set_scaled_stylesheet(status_label, "color: #888; font-size: 16px;")
             status_label.setToolTip("已停止")
         
         # 控制按鈕
         toggle_btn = QPushButton("停止" if conn.get('enabled', False) else "啟動")
         toggle_btn.setFixedWidth(60)
         toggle_btn.clicked.connect(lambda: self.serial_connection_toggled.emit(conn, toggle_btn, status_label))
-        toggle_btn.setStyleSheet("""
+        _set_scaled_stylesheet(toggle_btn, """
             QPushButton {
                 background-color: #444;
                 color: #DDD;
@@ -649,7 +728,7 @@ class CommPanel(QWidget):
         remove_btn = QPushButton("移除")
         remove_btn.setFixedWidth(60)
         remove_btn.clicked.connect(lambda: self.serial_connection_removed.emit(conn, panel))
-        remove_btn.setStyleSheet("""
+        _set_scaled_stylesheet(remove_btn, """
             QPushButton {
                 background-color: #d32f2f;
                 color: white;
@@ -684,4 +763,12 @@ class CommPanel(QWidget):
     def remove_serial_connection_from_list(self, conn):
         """從列表中移除 Serial 連接"""
         if conn in self.serial_connections:
-            self.serial_connections.remove(conn)
\ No newline at end of file
+            self.serial_connections.remove(conn)
+
+    def apply_font_scale(self):
+        """重新套用目前字體倍率到通訊面板。"""
+        _apply_scaled_font(self)
+        _reapply_scaled_stylesheet(self)
+        for child in self.findChildren(QWidget):
+            _apply_scaled_font(child)
+            _reapply_scaled_stylesheet(child)
diff --git a/src/GUI/drone_panel.py b/src/GUI/drone_panel.py
index 49e560e..3477126 100644
--- a/src/GUI/drone_panel.py
+++ b/src/GUI/drone_panel.py
@@ -1,10 +1,77 @@
 #!/usr/bin/env python3
-from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLabel, QCheckBox)
+from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLabel, QCheckBox, QApplication)
 from PyQt6.QtCore import pyqtSignal
 from PyQt6.QtGui import QPainter, QPen, QColor, QFont, QPolygonF
 from PyQt6.QtCore import QPointF, Qt
 import math
 
+
+def _get_font_scale():
+    app = QApplication.instance()
+    if app is None:
+        return 1.0
+    scale = app.property("font_scale")
+    try:
+        return float(scale) if scale is not None else 1.0
+    except (TypeError, ValueError):
+        return 1.0
+
+
+def _scale_stylesheet_font_sizes(stylesheet, scale):
+    if not stylesheet or 'font-size' not in stylesheet:
+        return stylesheet
+
+    import re
+
+    def repl(match):
+        size = float(match.group(1))
+        unit = match.group(2)
+        scaled = max(1.0, size * scale)
+        text = f"{scaled:.2f}".rstrip('0').rstrip('.')
+        return f"font-size: {text}{unit}"
+
+    return re.sub(r'font-size\s*:\s*([0-9]+(?:\.[0-9]+)?)\s*(px|pt)', repl, stylesheet)
+
+
+def _set_scaled_stylesheet(widget, stylesheet):
+    widget._base_stylesheet = stylesheet
+    scaled = _scale_stylesheet_font_sizes(stylesheet, _get_font_scale())
+    widget._applied_stylesheet = scaled
+    widget.setStyleSheet(scaled)
+
+
+def _reapply_scaled_stylesheet(widget):
+    current_stylesheet = widget.styleSheet()
+    base_stylesheet = getattr(widget, '_base_stylesheet', None)
+    applied_stylesheet = getattr(widget, '_applied_stylesheet', None)
+
+    if current_stylesheet != applied_stylesheet:
+        base_stylesheet = current_stylesheet
+        widget._base_stylesheet = base_stylesheet
+
+    if base_stylesheet is not None:
+        scaled = _scale_stylesheet_font_sizes(base_stylesheet, _get_font_scale())
+        widget._applied_stylesheet = scaled
+        if current_stylesheet != scaled:
+            widget.setStyleSheet(scaled)
+
+
+def _apply_scaled_font(widget):
+    base_font = getattr(widget, '_base_font_for_scale', None)
+    if base_font is None:
+        app = QApplication.instance()
+        app_base_font = app.property("base_app_font") if app else None
+        base_font = QFont(app_base_font) if app_base_font is not None else QFont(widget.font())
+        widget._base_font_for_scale = QFont(base_font)
+
+    scaled_font = QFont(base_font)
+    scale = _get_font_scale()
+    if base_font.pointSizeF() > 0:
+        scaled_font.setPointSizeF(max(1.0, base_font.pointSizeF() * scale))
+    elif base_font.pointSize() > 0:
+        scaled_font.setPointSize(max(1, int(round(base_font.pointSize() * scale))))
+    widget.setFont(scaled_font)
+
 class DronePanel(QWidget):
     """單個無人機面板類別"""
     
@@ -32,12 +99,13 @@ class DronePanel(QWidget):
         
         self.attitude_indicator = None
         self._init_ui()
+        self.apply_font_scale()
     
     def _init_ui(self):
         """初始化UI"""
         self.setObjectName(f"panel_{self.drone_id}")
         self.setFixedHeight(140)
-        self.setStyleSheet("""
+        _set_scaled_stylesheet(self, """
             background-color: #2A2A2A;
             border-radius: 8px;
         """)
@@ -49,7 +117,7 @@ class DronePanel(QWidget):
         
         # 創建內容容器（包含 info 和 control）
         content_widget = QWidget()
-        content_widget.setStyleSheet("background-color: #333; border-radius: 6px;")
+        _set_scaled_stylesheet(content_widget, "background-color: #333; border-radius: 6px;")
         content_layout = QHBoxLayout(content_widget)
         content_layout.setContentsMargins(8, 8, 8, 8)
         content_layout.setSpacing(8)
@@ -82,7 +150,7 @@ class DronePanel(QWidget):
         # 勾選框
         self.checkbox = QCheckBox()
         self.checkbox.setObjectName(f"{self.drone_id}_checkbox")
-        self.checkbox.setStyleSheet("""
+        _set_scaled_stylesheet(self.checkbox, """
             QCheckBox { 
                 color: #DDD;
             }
@@ -103,8 +171,8 @@ class DronePanel(QWidget):
         )
         
         # ID 顯示
-        id_label = QLabel(self.display_id)
-        id_label.setStyleSheet("""
+        self.id_label = QLabel(self.display_id)
+        _set_scaled_stylesheet(self.id_label, """
             font-weight: bold; 
             font-size: 14px; 
             color: #7FFFD4;
@@ -112,7 +180,7 @@ class DronePanel(QWidget):
         """)
         
         header_layout.addWidget(self.checkbox)
-        header_layout.addWidget(id_label)
+        header_layout.addWidget(self.id_label)
         header_layout.addStretch()
         
         info_layout.addWidget(header)
@@ -148,15 +216,15 @@ class DronePanel(QWidget):
         status_layout.setContentsMargins(0, 0, 0, 0)
         
         status_title = QLabel("狀態：")
-        status_title.setStyleSheet("color: #888; min-width: 50px;")
+        _set_scaled_stylesheet(status_title, "color: #888; min-width: 50px;")
         
         self.mode_label = QLabel("--")
         self.mode_label.setObjectName(f"{self.drone_id}_mode")
-        self.mode_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.mode_label, "color: #DDD;")
         
         self.armed_label = QLabel("--")
         self.armed_label.setObjectName(f"{self.drone_id}_armed")
-        self.armed_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.armed_label, "color: #DDD;")
         
         status_layout.addWidget(status_title)
         status_layout.addWidget(self.mode_label)
@@ -172,15 +240,15 @@ class DronePanel(QWidget):
         connection_layout.setContentsMargins(0, 0, 0, 0)
         
         connection_title = QLabel("Socket：")
-        connection_title.setStyleSheet("color: #888; min-width: 50px;")
+        _set_scaled_stylesheet(connection_title, "color: #888; min-width: 50px;")
         
         # 根據解析的 drone_id 資訊設定初始值
         self.socket_seq_label = QLabel(self.socket_seq)
         self.socket_seq_label.setObjectName(f"{self.drone_id}_socket_seq")
-        self.socket_seq_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.socket_seq_label, "color: #DDD;")
         
         connection_sep = QLabel(" - ")
-        connection_sep.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(connection_sep, "color: #DDD;")
         
         # 設定連接方式顯示
         connection_type_map = {
@@ -193,7 +261,7 @@ class DronePanel(QWidget):
         
         self.connection_type_label = QLabel(connection_type)
         self.connection_type_label.setObjectName(f"{self.drone_id}_connection_type")
-        self.connection_type_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.connection_type_label, "color: #DDD;")
         
         connection_layout.addWidget(connection_title)
         connection_layout.addWidget(self.socket_seq_label)
@@ -210,29 +278,29 @@ class DronePanel(QWidget):
         battery_layout.setContentsMargins(0, 0, 0, 0)
         # 顯示百分比
         battery_title = QLabel("電池：")
-        battery_title.setStyleSheet("color: #888; min-width: 50px;")
+        _set_scaled_stylesheet(battery_title, "color: #888; min-width: 50px;")
 
         self.battery_pct_label = QLabel("--")
         self.battery_pct_label.setObjectName(f"{self.drone_id}_battery_pct")
-        self.battery_pct_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.battery_pct_label, "color: #DDD;")
 
         # 分隔符
         separator1 = QLabel(" - ")
-        separator1.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(separator1, "color: #DDD;")
 
         # 顯示電壓
         self.battery_vol_label = QLabel("--")
         self.battery_vol_label.setObjectName(f"{self.drone_id}_battery_vol")
-        self.battery_vol_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.battery_vol_label, "color: #DDD;")
 
         # 分隔符
         separator2 = QLabel(" - ")
-        separator2.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(separator2, "color: #DDD;")
 
         # 顯示電池節數 (S count)
         self.battery_cells_label = QLabel("--")
         self.battery_cells_label.setObjectName(f"{self.drone_id}_battery_cells")
-        self.battery_cells_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.battery_cells_label, "color: #DDD;")
 
         battery_layout.addWidget(battery_title)
         battery_layout.addWidget(self.battery_pct_label)
@@ -251,18 +319,18 @@ class DronePanel(QWidget):
         altitude_layout.setContentsMargins(0, 0, 0, 0)
         
         altitude_title = QLabel("高度：")
-        altitude_title.setStyleSheet("color: #888; min-width: 50px;")
+        _set_scaled_stylesheet(altitude_title, "color: #888; min-width: 50px;")
         
         self.altitude_label = QLabel("--")
         self.altitude_label.setObjectName(f"{self.drone_id}_altitude")
-        self.altitude_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.altitude_label, "color: #DDD;")
         
         speed_title = QLabel("速度：")
-        speed_title.setStyleSheet("color: #888; margin-left: 10px;")
+        _set_scaled_stylesheet(speed_title, "color: #888; margin-left: 10px;")
         
         self.speed_label = QLabel("--")
         self.speed_label.setObjectName(f"{self.drone_id}_speed")
-        self.speed_label.setStyleSheet("color: #DDD;")
+        _set_scaled_stylesheet(self.speed_label, "color: #DDD;")
         
         altitude_layout.addWidget(altitude_title)
         altitude_layout.addWidget(self.altitude_label)
@@ -320,6 +388,16 @@ class DronePanel(QWidget):
     def is_checked(self):
         """獲取勾選狀態"""
         return self.checkbox.isChecked()
+
+    def apply_font_scale(self):
+        """重新套用目前字體倍率到 panel 內所有元件。"""
+        _apply_scaled_font(self)
+        _reapply_scaled_stylesheet(self)
+        for child in self.findChildren(QWidget):
+            _apply_scaled_font(child)
+            _reapply_scaled_stylesheet(child)
+        if self.attitude_indicator:
+            self.attitude_indicator.update()
     
 class SocketGroupPanel(QWidget):
     # 定義信號
@@ -331,11 +409,12 @@ class SocketGroupPanel(QWidget):
         self.color = color
         self.socket_type = socket_type
         self._init_ui()
+        self.apply_font_scale()
     
     def _init_ui(self):
         """初始化UI"""
         self.setObjectName(f"socket_group_{self.socket_id}")
-        self.setStyleSheet("""
+        _set_scaled_stylesheet(self, """
             background-color: #1E1E1E;
             border-radius: 12px;
         """)
@@ -352,7 +431,7 @@ class SocketGroupPanel(QWidget):
         # 分組勾選框
         self.group_checkbox = QCheckBox()
         self.group_checkbox.setObjectName(f"socket_{self.socket_id}_checkbox")
-        self.group_checkbox.setStyleSheet(f"""
+        _set_scaled_stylesheet(self.group_checkbox, f"""
             QCheckBox {{ color: #DDD; }}
             QCheckBox::indicator {{
                 width: 14px;
@@ -380,7 +459,7 @@ class SocketGroupPanel(QWidget):
         else:
             title_text = f"Socket {self.socket_id}"
         self.title_label = QLabel(title_text)
-        self.title_label.setStyleSheet(f"""
+        _set_scaled_stylesheet(self.title_label, f"""
             font-weight: bold; 
             font-size: 16px; 
             color: {self.color};
@@ -430,6 +509,14 @@ class SocketGroupPanel(QWidget):
         """設置分組勾選狀態（支持半選）"""
         self.group_checkbox.setCheckState(state)
 
+    def apply_font_scale(self):
+        """重新套用目前字體倍率到 socket 分組面板。"""
+        _apply_scaled_font(self)
+        _reapply_scaled_stylesheet(self)
+        for child in self.findChildren(QWidget):
+            _apply_scaled_font(child)
+            _reapply_scaled_stylesheet(child)
+
 
 class AttitudeIndicator(QWidget):
     """
@@ -503,7 +590,9 @@ class AttitudeIndicator(QWidget):
 
         # pitch ladder (every 10°, ±30°)
         p.setPen(QPen(QColor(255, 255, 255, 180), 1))
-        p.setFont(QFont("Arial", 6))
+        ladder_font = QFont("Arial")
+        ladder_font.setPointSizeF(max(1.0, 6 * _get_font_scale()))
+        p.setFont(ladder_font)
         for deg in range(-30, 31, 10):
             if deg == 0:
                 continue
@@ -581,6 +670,8 @@ class AttitudeIndicator(QWidget):
 
         # heading text centred (bigger)
         p.setPen(QPen(QColor("#FFFFFF")))
-        p.setFont(QFont("Arial", 10, QFont.Weight.Bold))
+        heading_font = QFont("Arial", weight=QFont.Weight.Bold)
+        heading_font.setPointSizeF(max(1.0, 10 * _get_font_scale()))
+        p.setFont(heading_font)
         hdg_str = f"{int(self.heading)}°"
-        p.drawText(0, int(strip_y), w, strip_h, Qt.AlignmentFlag.AlignCenter, hdg_str)
\ No newline at end of file
+        p.drawText(0, int(strip_y), w, strip_h, Qt.AlignmentFlag.AlignCenter, hdg_str)
diff --git a/src/GUI/gui.py b/src/GUI/gui.py
index fc63e9d..9b1e34f 100644
--- a/src/GUI/gui.py
+++ b/src/GUI/gui.py
@@ -4,15 +4,16 @@ from PyQt6.QtWidgets import (QApplication, QMainWindow, QVBoxLayout, QHBoxLayout
                             QWidget, QLabel, QSplitter, QScrollArea,
                             QSizePolicy, QTabWidget, QTableWidget, QTableWidgetItem,
                             QHeaderView, QPushButton, QCheckBox, QLineEdit,
-                            QComboBox, QDialog, QPlainTextEdit)
-from PyQt6.QtCore import Qt, QTimer, QObject, pyqtSignal
-from PyQt6.QtGui import QColor
+                            QComboBox, QDialog, QPlainTextEdit, QSlider)
+from PyQt6.QtCore import Qt, QTimer, QObject, pyqtSignal, QEvent
+from PyQt6.QtGui import QColor, QFont
 import sys
 import asyncio
 import json
 import subprocess
 import time
 import traceback
+import re
 
 
 def _log(level, message):
@@ -33,7 +34,8 @@ from mission_planner import FormationPlanner, MissionType
 from command_sender import MavlinkSender, Ros2CommandSender
 from mission_executor import MissionExecutor, MissionState
 from mission_group import (
-    MissionGroup, GroupPanel, DroneAssignDialog, GROUP_COLORS
+    MissionGroup, GroupPanel, DroneAssignDialog, GROUP_COLORS,
+    DEFAULT_MISSION_PARAM_VALUES
 )
 # ================================================================================
 
@@ -71,7 +73,10 @@ class StreamRedirector(QObject):
         self._buffer = ""
 
 class ControlStationUI(QMainWindow):
-    VERSION = '2.1.0'
+    VERSION = '2.2.0'
+    FONT_SCALE_MIN = 70
+    FONT_SCALE_MAX = 180
+    FONT_SCALE_DEFAULT = 100
     
     def __init__(self):
         super().__init__()
@@ -175,12 +180,22 @@ class ControlStationUI(QMainWindow):
         self._group_counter = 0         # 用來產生 group_id
         self._pending_box_assign = None # 框選後直接分配到的 group_id
         # ================================================================================
+        self.global_mission_defaults = dict(DEFAULT_MISSION_PARAM_VALUES)
+        self.font_scale = self.FONT_SCALE_DEFAULT / 100.0
+        self.pending_font_scale = self.font_scale
+        self._font_scale_applying = False
+        self._base_app_font = QFont(QApplication.instance().font())
         
         self.init_ui()
         self._setup_stream_redirector()
+        app = QApplication.instance()
+        app.setProperty("font_scale", self.font_scale)
+        app.setProperty("base_app_font", self._base_app_font)
+        app.installEventFilter(self)
 
     def init_ui(self):
         main_splitter = QSplitter(Qt.Orientation.Horizontal)
+        self.main_splitter = main_splitter
 
         # 左側 TabWidget
         self.left_tab = QTabWidget()
@@ -220,6 +235,10 @@ class ControlStationUI(QMainWindow):
 
         self.left_tab.addTab(self.comm_panel, "通訊")
 
+        # — 分頁 5：全域設定
+        self.settings_tab = self._create_settings_tab()
+        self.left_tab.addTab(self.settings_tab, "設定")
+
         # 右侧容器
         right_container = QWidget()
         right_layout = QVBoxLayout(right_container)
@@ -227,6 +246,11 @@ class ControlStationUI(QMainWindow):
         right_layout.setSpacing(10)
         
         # ========== 任務群組 Tab ==========
+        self.group_container = QWidget()
+        group_container_layout = QVBoxLayout(self.group_container)
+        group_container_layout.setContentsMargins(0, 0, 0, 0)
+        group_container_layout.setSpacing(6)
+
         group_header = QHBoxLayout()
         
         # 標題 + 收起/展開按鈕
@@ -261,7 +285,7 @@ class ControlStationUI(QMainWindow):
         clear_traj_btn.clicked.connect(self.drone_map.clear_trajectories)
         group_header.addWidget(clear_traj_btn)
 
-        right_layout.addLayout(group_header)
+        group_container_layout.addLayout(group_header)
 
         self.group_tab_widget = QTabWidget()
         self.group_tab_widget.setStyleSheet("""
@@ -274,9 +298,9 @@ class ControlStationUI(QMainWindow):
             QTabBar::tab:selected { background-color: #2B2B2B; color: #FFF; border-bottom-color: #2B2B2B; }
             QTabBar::tab:hover { background-color: #3A3A3A; }
         """)
-        self.group_tab_widget.setFixedHeight(150)
+        self.group_tab_widget.setMinimumHeight(80)
         self.group_tab_widget.currentChanged.connect(self._on_group_tab_changed)
-        right_layout.addWidget(self.group_tab_widget)
+        group_container_layout.addWidget(self.group_tab_widget)
         
         # 🌟 新增：保存群組面板的展開狀態
         self.group_panel_expanded = True
@@ -284,8 +308,17 @@ class ControlStationUI(QMainWindow):
         # 預設建立 Group A
         self._add_mission_group()
         
+        # 任務群組與地圖之間使用垂直 splitter，可上下拖曳調整高度
+        self.right_vertical_splitter = QSplitter(Qt.Orientation.Vertical)
+        self.right_vertical_splitter.addWidget(self.group_container)
+        self.right_vertical_splitter.addWidget(self.drone_map.get_widget())
+        self.right_vertical_splitter.setChildrenCollapsible(False)
+        self.right_vertical_splitter.setStretchFactor(0, 0)
+        self.right_vertical_splitter.setStretchFactor(1, 1)
+        self.right_vertical_splitter.setSizes([170, 700])
+        right_layout.addWidget(self.right_vertical_splitter)
+
         # 添加地圖
-        right_layout.addWidget(self.drone_map.get_widget())
         self.drone_map.get_gps_signal().connect(self.handle_map_click)
         self.drone_map.get_drone_clicked_signal().connect(self.handle_drone_clicked)
         self.drone_map.get_clear_all_drone_selection_signal().connect(self.handle_clear_all_drone_selection)
@@ -347,6 +380,259 @@ class ControlStationUI(QMainWindow):
 
         return widget
 
+    def _create_settings_tab(self):
+        """建立字體設定分頁。"""
+        widget = QWidget()
+        layout = QVBoxLayout(widget)
+        layout.setContentsMargins(10, 10, 10, 10)
+        layout.setSpacing(8)
+
+        scale_panel = QWidget()
+        scale_panel.setStyleSheet("""
+            QWidget {
+                background-color: #2A2A2A;
+                border: 1px solid #444;
+                border-radius: 6px;
+            }
+        """)
+        scale_layout = QVBoxLayout(scale_panel)
+        scale_layout.setContentsMargins(12, 12, 12, 12)
+        scale_layout.setSpacing(8)
+
+        self.font_scale_label = QLabel()
+        self.font_scale_label.setStyleSheet("color: #DDD; font-size: 13px; font-weight: bold;")
+        scale_layout.addWidget(self.font_scale_label)
+
+        self.font_scale_slider = QSlider(Qt.Orientation.Horizontal)
+        self.font_scale_slider.setRange(self.FONT_SCALE_MIN, self.FONT_SCALE_MAX)
+        self.font_scale_slider.setValue(self.FONT_SCALE_DEFAULT)
+        self.font_scale_slider.setTickInterval(10)
+        self.font_scale_slider.setTickPosition(QSlider.TickPosition.TicksBelow)
+        self.font_scale_slider.setStyleSheet("""
+            QSlider::groove:horizontal {
+                border: 1px solid #444;
+                height: 8px;
+                background: #333;
+                border-radius: 4px;
+            }
+            QSlider::handle:horizontal {
+                background: #4A9EFF;
+                border: 1px solid #3A8EEF;
+                width: 18px;
+                margin: -6px 0;
+                border-radius: 9px;
+            }
+            QSlider::sub-page:horizontal {
+                background: #4A9EFF;
+                border-radius: 4px;
+            }
+            QSlider::add-page:horizontal {
+                background: #2A2A2A;
+                border-radius: 4px;
+            }
+        """)
+        self.font_scale_slider.valueChanged.connect(self._handle_font_scale_slider_changed)
+        scale_layout.addWidget(self.font_scale_slider)
+
+        layout.addWidget(scale_panel)
+        layout.addStretch()
+
+        settings_button_row = QHBoxLayout()
+        settings_button_row.addStretch()
+        apply_btn = QPushButton("套用")
+        apply_btn.setStyleSheet("""
+            QPushButton {
+                background-color: #4A9EFF;
+                color: white;
+                border: none;
+                padding: 6px 12px;
+                border-radius: 4px;
+                font-size: 12px;
+                font-weight: bold;
+            }
+            QPushButton:hover { background-color: #3A8EEF; }
+        """)
+        apply_btn.clicked.connect(self._apply_pending_font_scale)
+        settings_button_row.addWidget(apply_btn)
+
+        layout.addLayout(settings_button_row)
+        self._update_font_scale_label()
+        return widget
+
+    def _update_font_scale_label(self):
+        percent = int(round(self.pending_font_scale * 100))
+        if hasattr(self, 'font_scale_label'):
+            self.font_scale_label.setText(f"字體倍率：{percent}%")
+
+    def _handle_font_scale_slider_changed(self, value):
+        self.pending_font_scale = value / 100.0
+        self._update_font_scale_label()
+
+    def _apply_pending_font_scale(self):
+        self._apply_font_scale(self.pending_font_scale)
+
+    def _scale_stylesheet_font_sizes(self, stylesheet, scale):
+        if not stylesheet or 'font-size' not in stylesheet:
+            return stylesheet
+
+        def repl(match):
+            size = float(match.group(1))
+            unit = match.group(2)
+            scaled = max(1.0, size * scale)
+            if unit == 'px':
+                text = f"{scaled:.2f}".rstrip('0').rstrip('.')
+            else:
+                text = f"{scaled:.3f}".rstrip('0').rstrip('.')
+            return f"font-size: {text}{unit}"
+
+        return re.sub(r'font-size\s*:\s*([0-9]+(?:\.[0-9]+)?)\s*(px|pt)', repl, stylesheet)
+
+    def _apply_font_scale_to_widget(self, widget):
+        if hasattr(widget, 'apply_font_scale'):
+            widget.apply_font_scale()
+            return
+
+        if hasattr(widget, '_base_stylesheet') and hasattr(widget, '_applied_stylesheet'):
+            current_stylesheet = widget.styleSheet()
+            base_stylesheet = widget._base_stylesheet
+            if current_stylesheet != widget._applied_stylesheet:
+                base_stylesheet = current_stylesheet
+                widget._base_stylesheet = base_stylesheet
+
+            scaled_stylesheet = self._scale_stylesheet_font_sizes(base_stylesheet, self.font_scale)
+            widget._applied_stylesheet = scaled_stylesheet
+            if current_stylesheet != scaled_stylesheet:
+                widget.setStyleSheet(scaled_stylesheet)
+            return
+
+        current_stylesheet = widget.styleSheet()
+        source_stylesheet = getattr(widget, '_font_scale_source_stylesheet', current_stylesheet)
+        applied_stylesheet = getattr(widget, '_font_scale_applied_stylesheet', None)
+        if current_stylesheet != applied_stylesheet:
+            source_stylesheet = current_stylesheet
+
+        scaled_stylesheet = self._scale_stylesheet_font_sizes(source_stylesheet, self.font_scale)
+        widget._font_scale_source_stylesheet = source_stylesheet
+        widget._font_scale_applied_stylesheet = scaled_stylesheet
+
+        if current_stylesheet != scaled_stylesheet:
+            widget.setStyleSheet(scaled_stylesheet)
+
+    def _apply_font_scale_to_widget_tree(self, root):
+        if root is None:
+            return
+        if isinstance(root, QWidget):
+            self._apply_font_scale_to_widget(root)
+        for child in root.findChildren(QWidget):
+            self._apply_font_scale_to_widget(child)
+
+    def _apply_font_scale(self, scale):
+        app = QApplication.instance()
+        splitter_sizes = None
+        left_width = None
+        old_left_min = None
+        old_left_max = None
+        old_window_size = self.size()
+        old_window_min = self.minimumSize()
+        old_window_max = self.maximumSize()
+        lock_window_size = not self.isMaximized() and not self.isFullScreen()
+        if hasattr(self, 'main_splitter') and self.main_splitter:
+            splitter_sizes = self.main_splitter.sizes()
+        if hasattr(self, 'left_tab') and self.left_tab:
+            left_width = self.left_tab.width()
+            old_left_min = self.left_tab.minimumWidth()
+            old_left_max = self.left_tab.maximumWidth()
+            if left_width > 0:
+                self.left_tab.setMinimumWidth(left_width)
+                self.left_tab.setMaximumWidth(left_width)
+
+        self._font_scale_applying = True
+        try:
+            self.font_scale = scale
+            app.setProperty("font_scale", scale)
+
+            if hasattr(self, '_base_app_font'):
+                scaled_font = QFont(self._base_app_font)
+                if self._base_app_font.pointSizeF() > 0:
+                    scaled_font.setPointSizeF(max(1.0, self._base_app_font.pointSizeF() * scale))
+                elif self._base_app_font.pixelSize() > 0:
+                    scaled_font.setPixelSize(max(1, int(round(self._base_app_font.pixelSize() * scale))))
+                app.setFont(scaled_font)
+
+            if lock_window_size:
+                self.setMinimumSize(old_window_size)
+                self.setMaximumSize(old_window_size)
+            self._update_font_scale_label()
+            self._apply_font_scale_to_widget_tree(self)
+
+            if hasattr(self, 'comm_panel') and self.comm_panel:
+                self.comm_panel.apply_font_scale()
+
+            for panel in getattr(self, 'drones', {}).values():
+                if hasattr(panel, 'apply_font_scale'):
+                    panel.apply_font_scale()
+
+            for panel in getattr(self, 'socket_groups', {}).values():
+                if hasattr(panel, 'apply_font_scale'):
+                    panel.apply_font_scale()
+
+            for panel in getattr(self, 'group_panels', {}).values():
+                if hasattr(panel, 'apply_font_scale'):
+                    panel.apply_font_scale()
+
+            if hasattr(self, 'drone_map') and self.drone_map:
+                self.drone_map.set_font_scale(scale)
+
+            if splitter_sizes:
+                self.main_splitter.setSizes(splitter_sizes)
+
+            if lock_window_size:
+                self.resize(old_window_size)
+            self.left_tab.updateGeometry()
+            self.update()
+        finally:
+            self._font_scale_applying = False
+
+        def _restore_locked_sizes():
+            if lock_window_size:
+                self.setMinimumSize(old_window_min)
+                self.setMaximumSize(old_window_max)
+                self.resize(old_window_size)
+
+            if self.left_tab and left_width and left_width > 0:
+                self.left_tab.setMinimumWidth(left_width)
+                self.left_tab.setMaximumWidth(left_width)
+
+            if splitter_sizes and self.main_splitter:
+                self.main_splitter.setSizes(splitter_sizes)
+
+        def _release_size_locks():
+            if self.left_tab and old_left_min is not None and old_left_max is not None:
+                self.left_tab.setMinimumWidth(old_left_min)
+                self.left_tab.setMaximumWidth(old_left_max)
+
+        QTimer.singleShot(0, _restore_locked_sizes)
+        QTimer.singleShot(30, _restore_locked_sizes)
+        QTimer.singleShot(100, _restore_locked_sizes)
+        QTimer.singleShot(150, _release_size_locks)
+
+    def eventFilter(self, obj, event):
+        if self._font_scale_applying:
+            return super().eventFilter(obj, event)
+
+        if isinstance(obj, QWidget) and event.type() in {
+            QEvent.Type.StyleChange,
+            QEvent.Type.Polish,
+            QEvent.Type.Show,
+        }:
+            self._font_scale_applying = True
+            try:
+                self._apply_font_scale_to_widget(obj)
+            finally:
+                self._font_scale_applying = False
+
+        return super().eventFilter(obj, event)
+
     def _clear_message_history(self):
         """清空訊息歷史。"""
         self.message_history.clear()
@@ -668,15 +954,28 @@ class ControlStationUI(QMainWindow):
         """🌟 收起/展開任務群組面板"""
         if self.group_panel_expanded:
             # 收起
-            self.group_tab_widget.setFixedHeight(0)
+            if hasattr(self, 'right_vertical_splitter'):
+                sizes = self.right_vertical_splitter.sizes()
+                if sizes and sizes[0] > 0:
+                    self._last_group_panel_height = sizes[0]
             self.group_tab_widget.hide()
+            header_height = self.group_container.sizeHint().height()
+            self.group_container.setMaximumHeight(header_height)
+            if hasattr(self, 'right_vertical_splitter'):
+                total = sum(self.right_vertical_splitter.sizes()) or self.height()
+                self.right_vertical_splitter.setSizes([header_height, max(1, total - header_height)])
             self.toggle_group_btn.setText("▶")
             self.toggle_group_btn.setToolTip("展開任務群組")
             self.group_panel_expanded = False
         else:
             # 展開
-            self.group_tab_widget.setFixedHeight(150)
+            self.group_container.setMaximumHeight(16777215)
             self.group_tab_widget.show()
+            if hasattr(self, 'right_vertical_splitter'):
+                total = sum(self.right_vertical_splitter.sizes()) or self.height()
+                group_height = getattr(self, '_last_group_panel_height', 170)
+                group_height = min(max(group_height, 120), max(120, total - 120))
+                self.right_vertical_splitter.setSizes([group_height, max(1, total - group_height)])
             self.toggle_group_btn.setText("▼")
             self.toggle_group_btn.setToolTip("收起任務群組")
             self.group_panel_expanded = True
@@ -688,7 +987,7 @@ class ControlStationUI(QMainWindow):
         group = MissionGroup(gid, color)
         self.mission_groups[gid] = group
 
-        panel = GroupPanel(group)
+        panel = GroupPanel(group, default_params=self.global_mission_defaults)
         panel.assign_drones_requested.connect(self._handle_assign_drones)
         panel.mission_type_changed.connect(self._handle_mission_type_changed)
         panel.start_requested.connect(self._handle_group_start)
diff --git a/src/GUI/map_layout.py b/src/GUI/map_layout.py
index 4f36017..c0239ff 100644
--- a/src/GUI/map_layout.py
+++ b/src/GUI/map_layout.py
@@ -16,6 +16,7 @@ class DroneMap:
         self.map_view = QWebEngineView()
         self.map_loaded = False
         self.pending_map_updates = {}
+        self.font_scale = 1.0
         
         # 創建橋接對象
         self.bridge = MapBridge()
@@ -36,6 +37,7 @@ class DroneMap:
             <script src="https://unpkg.com/leaflet-rotatedmarker/leaflet.rotatedMarker.js"></script>
             <script src="qrc:///qtwebchannel/qwebchannel.js"></script>
             <style>
+                :root { --ui-font-scale: 1; }
                 html, body, #map { height: 100%; margin: 0; }
                 #map {
                     user-select: none;
@@ -70,7 +72,7 @@ class DroneMap:
                     border: none;
                     border-radius: 4px;
                     cursor: pointer;
-                    font-size: 13px;
+                    font-size: calc(13px * var(--ui-font-scale));
                     font-weight: bold;
                     box-shadow: 0 2px 5px rgba(0,0,0,0.2);
                 }
@@ -90,7 +92,7 @@ class DroneMap:
                 }
                 .mission-info-row {
                     margin-bottom: 8px;
-                    font-size: 12px;
+                    font-size: calc(12px * var(--ui-font-scale));
                     color: #333;
                 }
                 .mission-info-label {
@@ -109,7 +111,7 @@ class DroneMap:
                     border: none;
                     border-radius: 4px;
                     cursor: pointer;
-                    font-size: 13px;
+                    font-size: calc(13px * var(--ui-font-scale));
                     font-weight: bold;
                     margin-top: 8px;
                 }
@@ -136,7 +138,7 @@ class DroneMap:
                     border: none;
                     border-radius: 4px;
                     cursor: pointer;
-                    font-size: 13px;
+                    font-size: calc(13px * var(--ui-font-scale));
                     font-weight: bold;
                     transition: background-color 0.2s;
                 }
@@ -154,7 +156,7 @@ class DroneMap:
                     border: none;
                     border-radius: 4px;
                     cursor: pointer;
-                    font-size: 13px;
+                    font-size: calc(13px * var(--ui-font-scale));
                     font-weight: bold;
                     transition: background-color 0.2s;
                 }
@@ -172,7 +174,7 @@ class DroneMap:
                     border: none;
                     border-radius: 4px;
                     cursor: pointer;
-                    font-size: 13px;
+                    font-size: calc(13px * var(--ui-font-scale));
                     font-weight: bold;
                     transition: background-color 0.2s;
                 }
@@ -327,7 +329,7 @@ class DroneMap:
                     align-items: center;
                     justify-content: center;
                     font-weight: bold;
-                    font-size: 12px;
+                    font-size: calc(12px * var(--ui-font-scale));
                     text-shadow: 1px 1px 2px rgba(255,255,255,0.8), -1px -1px 2px rgba(255,255,255,0.8);
                     ">${sysid}</div>`,
                     iconSize: [16, 16],
@@ -569,7 +571,7 @@ class DroneMap:
                             'align-items: center;' +
                             'justify-content: center;' +
                             'font-weight: bold;' +
-                            'font-size: 11px;' +
+                            'font-size: calc(11px * var(--ui-font-scale));' +
                             'border: 2px solid white;' +
                             'box-shadow: 0 2px 5px rgba(0,0,0,0.3);' +
                             '">' + idx + '</div>',
@@ -622,6 +624,10 @@ class DroneMap:
                     }
                 }
                 // ================================================================================
+
+                function setFontScale(scale) {
+                    document.documentElement.style.setProperty('--ui-font-scale', scale);
+                }
                 
                 // 開始任務
                 function startMission() {
@@ -807,7 +813,7 @@ class DroneMap:
                             'width: 22px; height: 22px;' +
                             'border-radius: 50%;' +
                             'display: flex; align-items: center; justify-content: center;' +
-                            'font-weight: bold; font-size: 10px;' +
+                            'font-weight: bold; font-size: calc(10px * var(--ui-font-scale));' +
                             'border: 2px solid white;' +
                             'box-shadow: 0 2px 5px rgba(0,0,0,0.3);' +
                             '">' + groupId + '</div>',
@@ -827,7 +833,7 @@ class DroneMap:
                             'width: 22px; height: 22px;' +
                             'border-radius: 50%;' +
                             'display: flex; align-items: center; justify-content: center;' +
-                            'font-weight: bold; font-size: 14px;' +
+                            'font-weight: bold; font-size: calc(14px * var(--ui-font-scale));' +
                             'border: 2px solid white;' +
                             'box-shadow: 0 2px 5px rgba(0,0,0,0.3);' +
                             '">★</div>',
@@ -878,6 +884,7 @@ class DroneMap:
         """地圖加載完成回調"""
         if ok:
             self.map_loaded = True
+            self.set_font_scale(self.font_scale)
         else:
             _log("ERROR", "地圖載入失敗")
     
@@ -909,6 +916,12 @@ class DroneMap:
         """聚焦到指定無人機"""
         if self.map_loaded:
             self.map_view.page().runJavaScript(f"focusOn('{drone_id}');")
+
+    def set_font_scale(self, scale):
+        """設定地圖 HTML 控制項的字體倍率。"""
+        self.font_scale = scale
+        if self.map_loaded:
+            self.map_view.page().runJavaScript(f"setFontScale({scale:.3f});")
     
     # ================================================================================
     # 任務規劃視覺化方法
diff --git a/src/GUI/mission_group.py b/src/GUI/mission_group.py
index 61620e4..e641545 100644
--- a/src/GUI/mission_group.py
+++ b/src/GUI/mission_group.py
@@ -23,6 +23,18 @@ GROUP_COLORS = [
     '#FF6B9D',  # 粉
 ]
 
+DEFAULT_MISSION_PARAM_VALUES = {
+    'spacing': '5.0',
+    'base_altitude': '10.0',
+    'altitude_diff': '2.0',
+    'radius': '10.0',
+    'altitude': '10.0',
+    'start_angle': '0',
+    'lateral_offset': '3.0',
+    'longitudinal_spacing': '5.0',
+    'line_spacing': '5.0',
+}
+
 
 class MissionGroup:
     """單一任務群組的資料"""
@@ -157,10 +169,13 @@ class GroupPanel(QWidget):
         QPushButton:disabled {{ background-color: #444; color: #666; }}
     """
 
-    def __init__(self, group: MissionGroup, parent=None):
+    def __init__(self, group: MissionGroup, parent=None, default_params=None):
         super().__init__(parent)
         self.group = group
         self.all_btn_ref = None  # 保存全選按鈕的參考
+        self.default_params = dict(DEFAULT_MISSION_PARAM_VALUES)
+        if default_params:
+            self.default_params.update(default_params)
         self._build_ui()
 
     def _make_sep(self):
@@ -372,23 +387,23 @@ class GroupPanel(QWidget):
         # 每種任務類型的參數定義: (key, label, default_value)
         self._param_defs = {
             'M_FORMATION': [
-                ('spacing', '間距 (m)', '5.0'),
-                ('base_altitude', '基準高度 (m)', '10.0'),
-                ('altitude_diff', '高低差 (m)', '2.0'),
+                ('spacing', '間距 (m)', self.default_params['spacing']),
+                ('base_altitude', '基準高度 (m)', self.default_params['base_altitude']),
+                ('altitude_diff', '高低差 (m)', self.default_params['altitude_diff']),
             ],
             'CIRCLE_FORMATION': [
-                ('radius', '半徑 (m)', '10.0'),
-                ('altitude', '高度 (m)', '10.0'),
-                ('start_angle', '起始角 (°)', '0'),
+                ('radius', '半徑 (m)', self.default_params['radius']),
+                ('altitude', '高度 (m)', self.default_params['altitude']),
+                ('start_angle', '起始角 (°)', self.default_params['start_angle']),
             ],
             'LEADER_FOLLOWER': [
-                ('lateral_offset', '橫向偏移 (m)', '3.0'),
-                ('longitudinal_spacing', '縱向間距 (m)', '5.0'),
-                ('altitude', '高度 (m)', '10.0'),
+                ('lateral_offset', '橫向偏移 (m)', self.default_params['lateral_offset']),
+                ('longitudinal_spacing', '縱向間距 (m)', self.default_params['longitudinal_spacing']),
+                ('altitude', '高度 (m)', self.default_params['altitude']),
             ],
             'GRID_SWEEP': [
-                ('line_spacing', '掃描線距 (m)', '5.0'),
-                ('altitude', '高度 (m)', '10.0'),
+                ('line_spacing', '掃描線距 (m)', self.default_params['line_spacing']),
+                ('altitude', '高度 (m)', self.default_params['altitude']),
             ],
         }
 
@@ -532,6 +547,13 @@ class GroupPanel(QWidget):
                     params[key] = float(default)
         return params
 
+    def set_param_value(self, key, value):
+        """更新指定參數欄位的文字值。"""
+        if key not in self._param_widgets:
+            return
+        _row_w, inp = self._param_widgets[key]
+        inp.setText(str(value))
+
     def update_mission_info(self, center_lat, center_lon, target_lat, target_lon):
         """更新中心點 / 目標點顯示"""
         info_style = f"color: {self.group.color}; font-size: 11px; font-weight: bold;"
@@ -553,4 +575,3 @@ class GroupPanel(QWidget):
         except ValueError:
             alt = 10.0
         self.takeoff_requested.emit(self.group.group_id, alt)
-