diff --git a/403.html b/403.html
index 2590d924..7b6bd163 100644
--- a/403.html
+++ b/403.html
@@ -2,6 +2,7 @@
 <html>
     <head>
         <meta charset="utf-8">
+        <meta name="color-scheme" content="dark">
         <title>닫혀 있습니다.</title>
         <script>
             setTimeout(function(){
diff --git a/f_install/install.php b/f_install/install.php
index e1c1b265..5710ea47 100644
--- a/f_install/install.php
+++ b/f_install/install.php
@@ -10,6 +10,7 @@ require(__DIR__ . '/../vendor/autoload.php');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>설치</title>
diff --git a/hwe/_119.php b/hwe/_119.php
index 206a45dc..576e1b1c 100644
--- a/hwe/_119.php
+++ b/hwe/_119.php
@@ -21,6 +21,7 @@ $plock = $db->queryFirstField('SELECT plock FROM plock WHERE `type` ="GAME"');
 <head>
 <title>삼국지 모의전투 HiDCHe</title>
 <meta charset="UTF-8">
+<meta name="color-scheme" content="dark">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=1024" />
 <?=WebUtil::printCSS('../d_shared/common.css')?>
diff --git a/hwe/_admin1.php b/hwe/_admin1.php
index 4ad6e2d3..4a3af3d2 100644
--- a/hwe/_admin1.php
+++ b/hwe/_admin1.php
@@ -19,6 +19,7 @@ $admin = getAdmin();
 <head>
 <title>게임관리</title>
 <meta charset="UTF-8">
+<meta name="color-scheme" content="dark">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=1024" />
 <?=WebUtil::printCSS('../d_shared/common.css')?>
diff --git a/hwe/_admin2.php b/hwe/_admin2.php
index 913f7fac..210eefb5 100644
--- a/hwe/_admin2.php
+++ b/hwe/_admin2.php
@@ -20,6 +20,7 @@ $db = DB::db();
 <head>
     <title>회원관리</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/_admin4.php b/hwe/_admin4.php
index 39795c54..129f8c1c 100644
--- a/hwe/_admin4.php
+++ b/hwe/_admin4.php
@@ -38,6 +38,7 @@ function colorBlockedName($general)
 <head>
     <title>멀티관리</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/_admin5.php b/hwe/_admin5.php
index ffe49cd5..fc67ce1f 100644
--- a/hwe/_admin5.php
+++ b/hwe/_admin5.php
@@ -38,6 +38,7 @@ $sel2[$type2] = "selected";
 <head>
     <title>일제정보</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/_admin7.php b/hwe/_admin7.php
index 25078733..cbd7f9e9 100644
--- a/hwe/_admin7.php
+++ b/hwe/_admin7.php
@@ -83,6 +83,7 @@ $generalObj = General::createGeneralObjFromDB($gen);
 <head>
     <title>로그정보</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/_admin8.php b/hwe/_admin8.php
index fdab5f99..e198ea11 100644
--- a/hwe/_admin8.php
+++ b/hwe/_admin8.php
@@ -30,6 +30,7 @@ $sel[$type] = "selected";
 <head>
     <title>외교정보</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/a_bestGeneral.php b/hwe/a_bestGeneral.php
index 219a5f00..53b1735a 100644
--- a/hwe/a_bestGeneral.php
+++ b/hwe/a_bestGeneral.php
@@ -28,6 +28,7 @@ $templates = new \League\Plates\Engine(__DIR__ . '/templates');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 명장일람</title>
diff --git a/hwe/a_emperior.php b/hwe/a_emperior.php
index b952a1a1..a2c530f5 100644
--- a/hwe/a_emperior.php
+++ b/hwe/a_emperior.php
@@ -14,6 +14,7 @@ increaseRefresh("왕조일람", 1);
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 왕조일람</title>
diff --git a/hwe/a_emperior_detail.php b/hwe/a_emperior_detail.php
index 024ea9b5..dc6900db 100644
--- a/hwe/a_emperior_detail.php
+++ b/hwe/a_emperior_detail.php
@@ -24,6 +24,7 @@ $serverID = $emperior['server_id'] ?? ($emperior['serverID'] ?? null);
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 왕조일람</title>
diff --git a/hwe/a_genList.php b/hwe/a_genList.php
index d1bcdf0d..d9a7e45f 100644
--- a/hwe/a_genList.php
+++ b/hwe/a_genList.php
@@ -41,6 +41,7 @@ if ($gameStor->isunited) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 장수일람</title>
diff --git a/hwe/a_hallOfFame.php b/hwe/a_hallOfFame.php
index a3a09885..8691a26f 100644
--- a/hwe/a_hallOfFame.php
+++ b/hwe/a_hallOfFame.php
@@ -43,6 +43,7 @@ if ($scenarioIdx && key_exists($scenarioIdx, $scenarioList[$seasonIdx] ?? [])) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 명예의 전당</title>
diff --git a/hwe/a_kingdomList.php b/hwe/a_kingdomList.php
index ff3f5c0a..7f45c2c9 100644
--- a/hwe/a_kingdomList.php
+++ b/hwe/a_kingdomList.php
@@ -26,6 +26,7 @@ if ($con >= 2) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 세력일람</title>
diff --git a/hwe/a_npcList.php b/hwe/a_npcList.php
index 97e11290..37949cb0 100644
--- a/hwe/a_npcList.php
+++ b/hwe/a_npcList.php
@@ -24,6 +24,7 @@ $sel[$type] = "selected";
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 빙의일람</title>
diff --git a/hwe/a_traffic.php b/hwe/a_traffic.php
index 7a083bc8..b14e35f9 100644
--- a/hwe/a_traffic.php
+++ b/hwe/a_traffic.php
@@ -58,6 +58,7 @@ if ($admin['maxonline'] < $curonline) {
 <head>
     <title><?= UniqueConst::$serverName ?>: 트래픽정보</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/b_betting.php b/hwe/b_betting.php
index f3cd0e14..d97c5a96 100644
--- a/hwe/b_betting.php
+++ b/hwe/b_betting.php
@@ -113,6 +113,7 @@ if ($str3) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 베팅장</title>
diff --git a/hwe/b_currentCity.php b/hwe/b_currentCity.php
index 8a3ddf7d..f650ad32 100644
--- a/hwe/b_currentCity.php
+++ b/hwe/b_currentCity.php
@@ -34,6 +34,7 @@ $templates = new \League\Plates\Engine('templates');
 <head>
     <title><?= UniqueConst::$serverName ?>: 도시정보</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printJS('../d_shared/common_path.js') ?>
diff --git a/hwe/b_genList.php b/hwe/b_genList.php
index 1e69b06a..5725b7b2 100644
--- a/hwe/b_genList.php
+++ b/hwe/b_genList.php
@@ -51,6 +51,7 @@ $templates = new \League\Plates\Engine('templates');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 암행부</title>
diff --git a/hwe/b_myBossInfo.php b/hwe/b_myBossInfo.php
index e4e64253..d4f56368 100644
--- a/hwe/b_myBossInfo.php
+++ b/hwe/b_myBossInfo.php
@@ -42,6 +42,7 @@ if ($meLevel >= 5) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 인사부</title>
diff --git a/hwe/b_myCityInfo.php b/hwe/b_myCityInfo.php
index d2fe313e..6601b026 100644
--- a/hwe/b_myCityInfo.php
+++ b/hwe/b_myCityInfo.php
@@ -33,6 +33,7 @@ $sel = [$type => "selected"];
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 세력도시</title>
diff --git a/hwe/b_myGenInfo.php b/hwe/b_myGenInfo.php
index a33f2ff2..5e3bec52 100644
--- a/hwe/b_myGenInfo.php
+++ b/hwe/b_myGenInfo.php
@@ -42,6 +42,7 @@ if ($gameStor->isunited) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 세력장수</title>
diff --git a/hwe/b_myKingdomInfo.php b/hwe/b_myKingdomInfo.php
index e0de4656..aa39e924 100644
--- a/hwe/b_myKingdomInfo.php
+++ b/hwe/b_myKingdomInfo.php
@@ -25,6 +25,7 @@ if ($nationID == 0) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 세력정보</title>
diff --git a/hwe/b_myPage.php b/hwe/b_myPage.php
index 2c22b1a3..eb2ac50e 100644
--- a/hwe/b_myPage.php
+++ b/hwe/b_myPage.php
@@ -52,6 +52,7 @@ $use_auto_nation_turn = $me->getAuxVar('use_auto_nation_turn') ?? 1;
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 내정보</title>
diff --git a/hwe/b_tournament.php b/hwe/b_tournament.php
index 375bd210..ea74537a 100644
--- a/hwe/b_tournament.php
+++ b/hwe/b_tournament.php
@@ -106,6 +106,7 @@ $globalBetTotal = array_sum($globalBet);
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title><?= UniqueConst::$serverName ?>: 토너먼트</title>
diff --git a/hwe/battle_simulator.php b/hwe/battle_simulator.php
index 0cb0738a..6de18918 100644
--- a/hwe/battle_simulator.php
+++ b/hwe/battle_simulator.php
@@ -43,6 +43,7 @@ if ($nationID) {
 <head>
     <title><?= UniqueConst::$serverName ?>: 전투 시뮬레이터</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1100" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/func_legacy.php b/hwe/func_legacy.php
index 2f5d1827..ea11bfe5 100644
--- a/hwe/func_legacy.php
+++ b/hwe/func_legacy.php
@@ -12,6 +12,7 @@ function printLimitMsg($turntime)
     <head>
         <title>접속제한</title>
         <meta charset="UTF-8">
+        <meta name="color-scheme" content="dark">
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=1024" />
         <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/func_template.php b/hwe/func_template.php
index f44e18e9..9b0828dc 100644
--- a/hwe/func_template.php
+++ b/hwe/func_template.php
@@ -25,6 +25,7 @@ function requireAdminPermissionHTML()
     <head>
         <title>관리메뉴</title>
         <meta charset="UTF-8">
+        <meta name="color-scheme" content="dark">
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=1024" />
         <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/index.php b/hwe/index.php
index 44309ffb..f294d530 100644
--- a/hwe/index.php
+++ b/hwe/index.php
@@ -14,6 +14,7 @@ $mapName = GameConst::$mapName;
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 메인</title>
diff --git a/hwe/install.php b/hwe/install.php
index 6ccd73f3..9848e748 100644
--- a/hwe/install.php
+++ b/hwe/install.php
@@ -28,6 +28,7 @@ if ($session->userGrade < 5 && !$allowReset) {
 <head>
     <title>설치</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <?= WebUtil::printJS('../d_shared/common_path.js') ?>
diff --git a/hwe/install_db.php b/hwe/install_db.php
index b2779906..ea80b470 100644
--- a/hwe/install_db.php
+++ b/hwe/install_db.php
@@ -21,6 +21,7 @@ if ($session->userGrade == 5) {
 <head>
     <title>설치</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <?= WebUtil::printJS('../d_shared/common_path.js') ?>
diff --git a/hwe/old_index.php b/hwe/old_index.php
index 1e6d7341..91009401 100644
--- a/hwe/old_index.php
+++ b/hwe/old_index.php
@@ -128,6 +128,7 @@ if ($lastVoteID) {
 <head>
     <title><?= $serverName ?>: 메인</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <?= WebUtil::printJS('../d_shared/common_path.js') ?>
diff --git a/hwe/recent_map.php b/hwe/recent_map.php
index 3dfa9e3a..b5caf5d2 100644
--- a/hwe/recent_map.php
+++ b/hwe/recent_map.php
@@ -11,6 +11,7 @@ include "func.php";
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>최근 지도</title>
diff --git a/hwe/scss/game_bg.scss b/hwe/scss/game_bg.scss
index ff1968e9..f16ed331 100644
--- a/hwe/scss/game_bg.scss
+++ b/hwe/scss/game_bg.scss
@@ -7,6 +7,13 @@ html {
     color: white;
 }
 
+@media (prefers-color-scheme: dark) {
+    html {
+        background: black;
+        color: white;
+    }
+}
+
 //TODO: 삭제!!
 table.tb_layout {
     border-collapse: collapse;
diff --git a/hwe/select_general_from_pool.php b/hwe/select_general_from_pool.php
index 0b5d4aa4..285336c8 100644
--- a/hwe/select_general_from_pool.php
+++ b/hwe/select_general_from_pool.php
@@ -44,6 +44,7 @@ foreach (getCharacterList(false) as $id => [$name, $info]) {
 <head>
     <title><?= UniqueConst::$serverName ?>: 장수 선택</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024'" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/select_npc.php b/hwe/select_npc.php
index 573f09d9..bb73c0f5 100644
--- a/hwe/select_npc.php
+++ b/hwe/select_npc.php
@@ -34,6 +34,7 @@ foreach ($scoutMsgs as $destNationID => $scoutMsg) {
 <head>
     <title><?= UniqueConst::$serverName ?>: NPC빙의</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../d_shared/common.css') ?>
diff --git a/hwe/t_diplomacy.php b/hwe/t_diplomacy.php
index 2b2f67da..1969d018 100644
--- a/hwe/t_diplomacy.php
+++ b/hwe/t_diplomacy.php
@@ -35,6 +35,7 @@ if ($permission < 1) {
 <head>
     <title><?= UniqueConst::$serverName ?>: 외교부</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printCSS('../e_lib/select2/select2.min.css') ?>
diff --git a/hwe/templates/error.php b/hwe/templates/error.php
index c97ad6ac..33b52c28 100644
--- a/hwe/templates/error.php
+++ b/hwe/templates/error.php
@@ -2,6 +2,7 @@
 <html>
 <head>
 <meta charset="UTF-8">
+<meta name="color-scheme" content="dark">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=1024" />
     <title>에러</title>
@@ -11,7 +12,7 @@
 </head>
 <body>
 
-<div class="bg0 legacy_layout" 
+<div class="bg0 legacy_layout"
     style="width:1000px;color:white;position:absolute;left:50%;top:50%;transform:translateX(-50%) translateY(-50%) ;">
     <h2 class="with_border bg1" style="color:orange;text-align:center;">서 버 에 러</h2>
     <main class="with_border" >
@@ -25,13 +26,12 @@
     </div>
     <div class="with_border">
         <?=$message?>
-    </div>  
+    </div>
     <div class="with_border">
         <pre>
         <?php debug_print_backtrace(); ?>
 </pre>
-    </div>  
+    </div>
 </div>
 </body>
 </html>
-
diff --git a/hwe/v_NPCControl.php b/hwe/v_NPCControl.php
index 5118c93b..6500ccd9 100644
--- a/hwe/v_NPCControl.php
+++ b/hwe/v_NPCControl.php
@@ -88,6 +88,7 @@ $lastSetters = [
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 임시 NPC 정책</title>
diff --git a/hwe/v_auction.php b/hwe/v_auction.php
index 66796a61..dac367e7 100644
--- a/hwe/v_auction.php
+++ b/hwe/v_auction.php
@@ -22,6 +22,7 @@ $me = $db->queryFirstRow('SELECT no, nation, officer_level, permission, con, tur
 <head>
     <title><?= UniqueConst::$serverName ?>: 경매장</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_battleCenter.php b/hwe/v_battleCenter.php
index 0bdcbb64..6065844b 100644
--- a/hwe/v_battleCenter.php
+++ b/hwe/v_battleCenter.php
@@ -17,6 +17,7 @@ $gen = Util::getReq('gen', 'int');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 감찰부</title>
diff --git a/hwe/v_board.php b/hwe/v_board.php
index cc8df8be..f552a145 100644
--- a/hwe/v_board.php
+++ b/hwe/v_board.php
@@ -42,6 +42,7 @@ $boardName = $isSecretBoard ? '기밀실' : '회의실';
 <head>
     <title><?= UniqueConst::$serverName ?>: <?= $boardName ?></title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_cachedMap.php b/hwe/v_cachedMap.php
index b2c368e0..664eec12 100644
--- a/hwe/v_cachedMap.php
+++ b/hwe/v_cachedMap.php
@@ -14,6 +14,7 @@ $mapName = GameConst::$mapName;
 <head>
 <title>최근 지도</title>
   <meta charset="UTF-8">
+  <meta name="color-scheme" content="dark">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=500" />
   <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_chiefCenter.php b/hwe/v_chiefCenter.php
index 39aec49f..6193047b 100644
--- a/hwe/v_chiefCenter.php
+++ b/hwe/v_chiefCenter.php
@@ -14,6 +14,7 @@ $generalObj = General::createGeneralObjFromDB($session->generalID);
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 사령부</title>
diff --git a/hwe/v_globalDiplomacy.php b/hwe/v_globalDiplomacy.php
index d616cde2..01bb167c 100644
--- a/hwe/v_globalDiplomacy.php
+++ b/hwe/v_globalDiplomacy.php
@@ -14,6 +14,7 @@ $mapName = GameConst::$mapName;
 <head>
   <title><?= UniqueConst::$serverName ?>:중원정보</title>
   <meta charset="UTF-8">
+  <meta name="color-scheme" content="dark">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=500" />
   <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_history.php b/hwe/v_history.php
index 1e89969d..aafc1452 100644
--- a/hwe/v_history.php
+++ b/hwe/v_history.php
@@ -41,6 +41,7 @@ $me = $db->queryFirstRow('SELECT con, turntime FROM general WHERE owner = %i', $
 <head>
   <title><?= UniqueConst::$serverName ?>:연감</title>
   <meta charset="UTF-8">
+  <meta name="color-scheme" content="dark">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=500" />
   <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_inheritPoint.php b/hwe/v_inheritPoint.php
index 8a5ca22f..24eeccd7 100644
--- a/hwe/v_inheritPoint.php
+++ b/hwe/v_inheritPoint.php
@@ -76,6 +76,7 @@ $lastInheritPointLogs = $db->query('SELECT id, server_id, year, month, date, tex
 <head>
     <title><?= UniqueConst::$serverName ?>: 유산 관리</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_join.php b/hwe/v_join.php
index fc7545ec..54b8f614 100644
--- a/hwe/v_join.php
+++ b/hwe/v_join.php
@@ -55,6 +55,7 @@ foreach ($scoutMsgs as $destNationID => $scoutMsg) {
 <head>
     <title><?= UniqueConst::$serverName ?>: 장수 생성</title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <?= WebUtil::printJS('../d_shared/common_path.js', true) ?>
diff --git a/hwe/v_nationBetting.php b/hwe/v_nationBetting.php
index a24f9a25..9344ccc2 100644
--- a/hwe/v_nationBetting.php
+++ b/hwe/v_nationBetting.php
@@ -18,6 +18,7 @@ $generalID = $session->generalID;
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 국가 베팅장</title>
diff --git a/hwe/v_nationGeneral.php b/hwe/v_nationGeneral.php
index 1bc2f726..78d214d5 100644
--- a/hwe/v_nationGeneral.php
+++ b/hwe/v_nationGeneral.php
@@ -17,6 +17,7 @@ $gameStor = KVStorage::getStorage($db, 'game_env');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 세력 장수</title>
diff --git a/hwe/v_nationStratFinan.php b/hwe/v_nationStratFinan.php
index 96163cd7..c2c2647a 100644
--- a/hwe/v_nationStratFinan.php
+++ b/hwe/v_nationStratFinan.php
@@ -116,6 +116,7 @@ $outcome = getOutcome(100, $dedicationList);
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 내무부</title>
diff --git a/hwe/v_processing.php b/hwe/v_processing.php
index 3dd203ca..6f2d96a0 100644
--- a/hwe/v_processing.php
+++ b/hwe/v_processing.php
@@ -71,6 +71,7 @@ if (!$commandObj->hasPermissionToReserve()) {
 <head>
     <title><?= $commandObj->getName() ?></title>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <?= WebUtil::printJS('../d_shared/common_path.js') ?>
diff --git a/hwe/v_troop.php b/hwe/v_troop.php
index 6923ed9a..f2f7e130 100644
--- a/hwe/v_troop.php
+++ b/hwe/v_troop.php
@@ -17,6 +17,7 @@ $gameStor = KVStorage::getStorage($db, 'game_env');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=500" />
     <title><?= UniqueConst::$serverName ?>: 부대 편성</title>
diff --git a/hwe/v_vote.php b/hwe/v_vote.php
index c2313f71..4f3a9310 100644
--- a/hwe/v_vote.php
+++ b/hwe/v_vote.php
@@ -18,6 +18,7 @@ $develcost = $gameStor->getValue('develcost');
 
 <head>
   <meta charset="UTF-8">
+  <meta name="color-scheme" content="dark">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=500" />
   <title><?= UniqueConst::$serverName ?>: 설문 조사</title>
diff --git a/i_entrance/admin_userlist.php b/i_entrance/admin_userlist.php
index 1999cc96..da0a17b9 100644
--- a/i_entrance/admin_userlist.php
+++ b/i_entrance/admin_userlist.php
@@ -9,6 +9,7 @@ require(__DIR__ . '/../vendor/autoload.php');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title>유저 관리</title>
diff --git a/i_entrance/entrance.php b/i_entrance/entrance.php
index 18eb53c6..7ac97b4a 100644
--- a/i_entrance/entrance.php
+++ b/i_entrance/entrance.php
@@ -20,6 +20,7 @@ $acl = $session->acl;
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title>서버목록</title>
diff --git a/i_entrance/user_info.php b/i_entrance/user_info.php
index ab13678c..3fedde01 100644
--- a/i_entrance/user_info.php
+++ b/i_entrance/user_info.php
@@ -9,6 +9,7 @@ require(__DIR__ . '/../vendor/autoload.php');
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title>계정 관리</title>
diff --git a/index.php b/index.php
index db73db38..caf2daae 100644
--- a/index.php
+++ b/index.php
@@ -48,6 +48,7 @@ foreach (ServConfig::getServerList() as $setting) {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>삼국지 모의전투 HiDCHe</title>
diff --git a/oauth_kakao/join.php b/oauth_kakao/join.php
index 25d689e2..c65cdb3d 100644
--- a/oauth_kakao/join.php
+++ b/oauth_kakao/join.php
@@ -27,6 +27,7 @@ if ($canJoin != 'Y') {
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>회원가입</title>
diff --git a/oauth_kakao/oauth_fail.html b/oauth_kakao/oauth_fail.html
index 46a19df0..14129821 100644
--- a/oauth_kakao/oauth_fail.html
+++ b/oauth_kakao/oauth_fail.html
@@ -2,6 +2,7 @@
 <html lang="ko">
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title>OAuth 로그인 실패</title>
diff --git a/showErrorLog.php b/showErrorLog.php
index fdad1df0..8636cb4b 100644
--- a/showErrorLog.php
+++ b/showErrorLog.php
@@ -51,6 +51,7 @@ $err_logs = $fdb->select('err_log', [
 
 <head>
     <meta charset="UTF-8">
+    <meta name="color-scheme" content="dark">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=1024" />
     <title>에러 로그</title>
