@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+KR&display=swap");

/*공통*/
* {
  margin: 0px;
  padding: 0px;
  font-family: "Noto Sans KR", sans-serif;
}

html,
body {
  overflow-x: hidden;
}

a {
  text-decoration: none;
}

li {
  list-style: none;
}

.header_back .header_bg {
  display: flex;
  width: 100%;
  height: auto;
  position: relative;
  align-items: center;
}

.header_bg_m {
  display: none;
}

.sub_txt h1 {
  position: absolute;
  align-items: center;
  width: 100%;
  height: auto;
  text-align: center;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fcf7f7;
  top: 50%;
  letter-spacing: 3px;
}

.navbar {
  display: flex;
  position: absolute;
  top: 0px;
  height: 100%;
  width: 100%;
}

.navbar .navbar_logo {
  position: absolute;
  left: 20px;
  top: 20px;
}

.navbar .navbar_menu {
  position: absolute;
  right: 20px;
  top: 30px;
  list-style: none;
  display: flex;
}

.navbar .navbar_logo .isb_logo {
  max-width: 200px;
  width: 100%;
  height: auto;
}

.navbar .navbar_menu .menu_insa {
  font-weight: 1000;
}

.navbar .navbar_menu .menu2_business {
  font-weight: 1000;
}

.navbar .navbar_menu li {
  padding-right: 20px;
}

.navbar .navbar_menu li a {
  color: #f0f0f0;
  font-size: 16px;
  letter-spacing: 2px;
}

.navbar .togglebtn {
  display: flex;
  position: absolute;
  top: 25px;
  right: 20px;
  font-size: 24px;
  display: none;
}

.navbar .togglebtn i {
  color: #ffffff;
}

.sec_nav .sec_menu {
  display: flex;
  height: 80px;
  background-color: #0b3a3f;
  justify-content: center;
  align-items: center;
  letter-spacing: 1px;
}

.sec_nav .sec_menu li {
  padding-right: 20px;
}

.sec_nav .sec_menu li a {
  color: #f0f0f0;
}

.sec {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: auto;
  justify-content: center;
  align-items: center;
}

.call {
  display: flex;
  height: 80px;
  text-align: center;
  justify-content: center;
  align-items: center;
  background-color: #ffffff;
  border-top: 1px solid #dddddd;
}

.call i {
  color: #4ebaaa;
  padding-right: 10px;
  font-size: 24px;
}

.call h3 {
  font-size: 18px;
  text-align: left;
}

.foot_box {
  display: flex;
  flex-direction: column;
  padding: 30px 0px;
  padding-left: 50px;
  justify-content: start;
  height: 300px;
  background-color: #082326;
}

.foot_box .foot_logo {
  font-size: 32px;
  padding-bottom: 12px;
}

.foot_box .foot_logo .footer_logo {
  max-width: 180px;
  width: 100%;
  height: auto;
}

.foot_box .foot_info {
  font-size: 16px;
  color: #e4e4e4;
  line-height: 25px;
}

.foot_box .foot_info_m {
  display: none;
}

/*ISB_main 추가*/
header {
  position: relative;
}

.header_main_back .header_main_bg {
  display: flex;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.header_main_back .header_main_bg_m {
  display: none;
}

.header_main_txt {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  text-align: center;
  font-size: 16px;
  color: #f0f0f0;
  letter-spacing: 5px;
}

.section1 {
  background-color: #0b3a3f;
  display: flex;
  height: 460px;
  align-items: center;
}

.section1 .sec1_menu {
  display: flex;
  justify-content: center;
  width: 100%;
}

.sec1_menu .sec1_menu_one,
.sec1_menu .sec1_menu_two,
.sec1_menu .sec1_menu_three,
.sec1_menu .sec1_menu_four {
  transition: transform 0.35s ease, box-shadow 0.35s ease, background-color 0.35s ease;
}

.sec1_menu .sec1_menu_one:hover,
.sec1_menu .sec1_menu_two:hover,
.sec1_menu .sec1_menu_three:hover,
.sec1_menu .sec1_menu_four:hover {
  transform: translateY(-10px);
  background-color: #ffffff;
  box-shadow: 0px 16px 28px 0px rgba(0, 0, 0, 0.18);
}

.sec1_menu .sec1_menu_one {
  display: flex;
  flex-direction: column;
  width: 180px;
  height: 180px;
  background-color: #e4e4e4;
  border-radius: 90px;
  text-align: center;
  align-items: center;
  justify-content: center;
  margin-right: 30px;
}

.sec1_menu .sec1_menu_one h6 {
  padding-top: 20px;
  font-size: 15px;
  color: #0e0e0e;
  letter-spacing: 1px;
}

.sec1_menu .sec1_menu_two {
  display: flex;
  flex-direction: column;
  width: 180px;
  height: 180px;
  background-color: #e4e4e4;
  border-radius: 90px;
  text-align: center;
  align-items: center;
  justify-content: center;
  margin-right: 30px;
}

.sec1_menu .sec1_menu_two h6 {
  padding-top: 20px;
  font-size: 15px;
  color: #0e0e0e;
  letter-spacing: 1px;
}

.sec1_menu .sec1_menu_three {
  display: flex;
  flex-direction: column;
  width: 180px;
  height: 180px;
  background-color: #e4e4e4;
  border-radius: 90px;
  text-align: center;
  align-items: center;
  justify-content: center;
  margin-right: 30px;
}

.sec1_menu .sec1_menu_three h6 {
  padding-top: 20px;
  font-size: 15px;
  color: #0e0e0e;
  letter-spacing: 1px;
}

.sec1_menu .sec1_menu_four {
  display: flex;
  flex-direction: column;
  width: 180px;
  height: 180px;
  background-color: #e4e4e4;
  border-radius: 90px;
  text-align: center;
  align-items: center;
  justify-content: center;
}

.sec1_menu .sec1_menu_four h6 {
  padding-top: 20px;
  font-size: 15px;
  color: #0e0e0e;
  letter-spacing: 1px;
}

.section1 .sec1_menu .icon01 {
  width: 65px;
}

.section1 .sec1_menu .icon02 {
  width: 65px;
}

.section1 .sec1_menu .icon03 {
  width: 65px;
}

.section1 .sec1_menu .icon04 {
  width: 65px;
}

.section2 {
  height: auto;
}

.section2 .sec2_box1 {
  display: flex;
  text-align: center;
  align-items: center;
  background-color: #f6f6f6;
}

.section2 ul li {
  width: 50%;
}

.section2 .sec2_box1 .box1_half_m {
  display: none;
}

.section2 .sec2_box2 .box2_half_m {
  display: none;
}

.section2 .sec2_box1 .box1_half {
  width: 100%;
  height: auto;
  display: block;
}

.section2 .sec2_box1 .box1_txt {
  width: 50%;
  height: auto;
}

.section2 .sec2_box1 .box1_txt h2 {
  font-size: 24px;
  padding-bottom: 15px;
  padding-top: 10px;
}

.section2 .sec2_box1 .box1_txt h5 {
  font-size: 16px;
}

.section2 .sec2_box2 {
  display: flex;
  text-align: center;
  align-items: center;
  background-color: #f6f6f6;
}

.section2 .sec2_box2 .box2_txt {
  width: 50%;
  height: auto;
}

.section2 .sec2_box2 .box2_txt h2 {
  padding-bottom: 15px;
  padding-top: 10px;
  font-size: 24px;
}

.section2 .sec2_box2 .box2_txt h5 {
  font-size: 16px;
}

.section2 .sec2_box2 .box2_half {
  width: 100%;
  height: auto;
  display: block;
}

/*ISB_insa.html 추가*/

.insa_sec_img_m {
  display: none;
}

.sec_nav .sec_menu .insa_txt {
  font-weight: 900;
}

.sec_insa {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: auto;
  margin-top: 40px;
  margin-bottom: 40px;
}

.sec_insa .insa_img .insa_sec_img {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: auto;
}

.sec_insa .txt {
  display: flex;
  flex-direction: column;
  padding: 30px 10px;
  justify-content: center;
  width: 1140px;
  max-width: 90%;
}

.sec_insa .txt h2 {
  padding-bottom: 15px;
}

.sec_insa .txt p {
  line-height: 32px;
}

.sec_insa .txt .p_1 {
  padding-bottom: 15px;
  font-size: 16px;
}

.sec_insa .txt .p_2 {
  font-size: 16px;
}

/*ISB_find 추가*/
.sec_nav .sec_menu .nav_map {
  font-weight: 900;
}

.map {
  display: flex;
  justify-content: center;
  align-items: center;
  height: auto;
  flex-direction: column;
}

.googlemap {
  position: relative;
  margin: 0 auto;
  max-width: 1440px;
  width: 92%;
  margin-top: 50px;
}

.googlemap div {
  width: 100%;
  padding-bottom: 50%;
}

.googlemap div iframe {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.map .map_txt {
  display: flex;
  flex-direction: column;
  padding-top: 30px;
  width: 92%;
  max-width: 1440px;
  margin-bottom: 50px;
}

.map .map_txt h2 {
  padding-bottom: 20px;
  font-size: 24px;
}

.map .map_txt p {
  line-height: 35px;
}

/*ISB_smartglass*/
.sec_nav .sec_menu .smart_txt {
  font-weight: 1000;
}

.sec .smartglass_txt {
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  margin-top: 80px;
  margin-bottom: 30px;
}

.sec .smartglass_txt .smart_first_txt {
  font-size: 24px;
  font-weight: 1000;
  margin-bottom: 20px;
}

.sec .smartglass_txt .smart_second_txt {
  line-height: 32px;
  max-width: 1000px;
  font-size: 18px;
}

.sec .smartglass_txt .smart_second_txt .txt_last {
  font-size: 14px;
  padding-left: 12px;
}

.sec .glass_i {
  margin-top: 20px;
  margin-bottom: 180px;
  width: 100%;
  height: auto;
}

.sec .glass_i_m {
  display: none;
}

.sec .smartglass_txt .smart_third_txt {
  font-weight: 1000;
  font-size: 24px;
}

.technolo {
  width: 90%;
  height: auto;
  display: flex;
  justify-content: space-around;
  margin-bottom: 120px;
}

.technolo .develop1 .develop_i1 {
  width: 100%;
  height: auto;
  margin-bottom: 18px;
}
.technolo .develop2 .develop_i2 {
  width: 100%;
  height: auto;
  margin-bottom: 18px;
}

.technolo .develop1 .develop_t {
  line-height: 30px;
  font-size: 18px;
}

.technolo .develop1 .develop_t .develop_t2 {
  font-size: 14px;
}

.technolo .develop2 .develop_t2 .develop_t4 {
  font-size: 14px;
}

.technolo .develop2 .develop_t2 {
  line-height: 30px;
  font-size: 18px;
}

.develop_i1_m {
  display: none;
}

.develop_i2_m {
  display: none;
}

/*ISB_business 추가*/
.sec_nav .sec_menu .intro {
  font-weight: 900;
}

.sec .business_txt {
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  height: auto;
}

.sec .smart_i {
  width: 100%;
  height: auto;
}

.sec .smart_i_m {
  display: none;
}

.sec .business_txt .busi_first_txt {
  font-size: 24px;
  font-weight: 900;
  margin-top: 80px;
  padding-bottom: 10px;
}

.sec .business_txt .busi_second_txt {
  text-align: center;
  max-width: 980px;
  padding: 30px 30px;
  font-size: 19px;
  line-height: 30px;
}

.sec .business_txt .busi_third_txt {
  font-size: 24px;
  font-weight: 900;
  padding-top: 100px;
}

.step {
  width: 100%;
  height: auto;
}

.step .step1 .step1_i_m {
  display: none;
}

.step .step2 .step2_i_m {
  display: none;
}

.step .step3 .step3_i_m {
  display: none;
}

.step .step4 .step4_i_m {
  display: none;
}

.step .step5 .step5_i_m {
  display: none;
}

.step .step1 {
  width: 100%;
  margin-top: 30px;
  display: flex;
  justify-content: center;
  text-align: center;
}

.step1_txt {
  border: 1px solid #b9b9b9;
  width: 520px;
  height: 260px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.step1_txt:hover,
.step2_txt:hover,
.step3_txt:hover,
.step4_txt:hover,
.step5_txt:hover {
  border-color: #0f6d66;
  box-shadow: 0px 10px 24px 0px rgba(15, 109, 102, 0.12);
}

.step .step1 {
  display: flex;
  justify-content: center;
}

.step .step1 .step1_i {
  width: 520px;
  height: 260px;
  object-fit: cover;
  display: block;
}

.step .step1_txt {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 30px;
}

.step .step1_txt h5 {
  font-size: 22px;
}

.step .step1_txt ul {
  display: flex;
  justify-content: space-around;
  padding-top: 24px;
  flex-wrap: wrap;
  font-size: 16px;
  line-height: 33px;
  word-spacing: 3px;
}

.step .step_down {
  display: flex;
  width: 100%;
  justify-content: center;
}

.step .step_down .down {
  text-align: center;
  width: 25px;
  padding: 20px 0px;
}

.step .step2 {
  width: 100%;
  display: flex;
  justify-content: center;
  text-align: center;
}

.step2_txt {
  border: 1px solid #b9b9b9;
  width: 520px;
  height: 260px;
}

.step .step2 .step2_i {
  width: 520px;
  height: 260px;
  object-fit: cover;
  display: block;
}

.step .step2_txt {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 30px;
}

.step .step2_txt h5 {
  font-size: 22px;
}

.step .step2_txt ul {
  display: flex;
  justify-content: space-around;
  padding-top: 24px;
  flex-wrap: wrap;
  line-height: 33px;
  font-size: 16px;
  word-spacing: 3px;
}

.step .step3 {
  width: 100%;
  display: flex;
  justify-content: center;
  text-align: center;
}

.step3_txt {
  border: 1px solid #b9b9b9;
  width: 520px;
  height: 260px;
}

.step .step3 .step3_i {
  width: 520px;
  height: 260px;
  object-fit: cover;
  display: block;
}

.step .step3_txt {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 30px;
}

.step .step3_txt h5 {
  font-size: 22px;
}

.step .step3_txt ul {
  display: flex;
  justify-content: space-around;
  padding-top: 24px;
  flex-wrap: wrap;
  line-height: 33px;
  font-size: 16px;
  word-spacing: 3px;
}

.step .step4 {
  width: 100%;
  display: flex;
  justify-content: center;
  text-align: center;
}

.step4_txt {
  border: 1px solid #b9b9b9;
  width: 520px;
  height: 260px;
}

.step .step4 .step4_i {
  width: 520px;
  height: 260px;
  object-fit: cover;
  display: block;
}

.step .step4_txt {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 30px;
}

.step .step4_txt h5 {
  font-size: 22px;
}

.step .step4_txt ul {
  display: flex;
  justify-content: space-around;
  padding-top: 24px;
  flex-wrap: wrap;
  font-size: 16px;
  line-height: 33px;
  word-spacing: 3px;
}

.step .step5 {
  margin: 50px 0px;
  width: 100%;
  display: flex;
  flex-direction: row-reverse;
  justify-content: center;
  text-align: center;
}

.step5_txt {
  border: 1px solid #b9b9b9;
  width: 520px;
  height: 260px;
}

.step .step5 .step5_i {
  width: 520px;
  height: 260px;
  object-fit: cover;
  display: block;
}

.step .step5_txt {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 30px;
}

.step .step5_txt h5 {
  font-size: 22px;
}

.step .step5_txt ul {
  display: flex;
  justify-content: space-around;
  padding-top: 24px;
  flex-wrap: wrap;
  font-size: 16px;
  line-height: 33px;
  word-spacing: -5px;
}

/*ISB_it_consulting 추가*/
.sec_nav .sec_menu .consulting_txt {
  font-weight: 1000;
}

.consulting_intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-top: 80px;
  margin-bottom: 60px;
  padding: 0 20px;
}

.consulting_intro .consulting_first_txt {
  font-size: 24px;
  font-weight: 1000;
  margin-bottom: 16px;
}

.consulting_intro .consulting_second_txt {
  line-height: 32px;
  max-width: 1000px;
  font-size: 18px;
  color: #3d3d3d;
}

.consulting_services {
  width: 92%;
  max-width: 1320px;
  margin: 0 auto 120px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
}

.consulting_services .service_card {
  flex: 1 1 340px;
  max-width: 400px;
  padding: 36px 28px;
  border: 1px solid #e4e4e4;
  border-top: 3px solid #0f6d66;
  border-radius: 4px;
  background: #fff;
  text-align: left;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.consulting_services .service_card:hover {
  transform: translateY(-8px);
  box-shadow: 0px 16px 32px 0px rgba(15, 109, 102, 0.16);
  border-color: #0f6d66;
}

.consulting_services .service_card .service_num {
  font-size: 14px;
  font-weight: 700;
  color: #0f6d66;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.consulting_services .service_card h4 {
  font-size: 19px;
  margin-bottom: 12px;
}

.consulting_services .service_card p {
  font-size: 15px;
  line-height: 26px;
  color: #555555;
}

.consulting_process {
  width: 100%;
  background-color: #f6f6f6;
  padding: 70px 20px 90px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.consulting_process .busi_third_txt {
  font-size: 24px;
  font-weight: 900;
  margin-bottom: 50px;
}

.consulting_process .process_list {
  width: 100%;
  max-width: 1240px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.consulting_process .process_step {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #fff;
  border: 1px solid #e4e4e4;
  border-radius: 4px;
  padding: 24px 30px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.consulting_process .process_step:hover {
  transform: translateX(6px);
  box-shadow: 0px 10px 24px 0px rgba(15, 109, 102, 0.12);
}

.consulting_process .process_step .step_no {
  flex: none;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #0f6d66;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.consulting_process .process_step h5 {
  font-size: 18px;
  margin-bottom: 6px;
}

.consulting_process .process_step p {
  font-size: 15px;
  color: #555555;
  line-height: 24px;
}

.consulting_process .process_down {
  display: flex;
  justify-content: center;
  padding: 14px 0px;
}

.consulting_process .process_down i {
  color: #0f6d66;
  font-size: 18px;
}

/*ISB_vision  추가*/
.sec_nav .sec_menu .vision {
  font-weight: 900;
}

.sec_vision .vision_img .vision_i_m {
  display: none;
}

.sec_vision {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: auto;
  margin-top: 50px;
  margin-bottom: 50px;
}

.sec_vision .vision_img .vision_i {
  display: flex;
  width: 100%;
  height: auto;
  justify-content: center;
  align-items: center;
  padding-bottom: 50px;
}

.strategy_wrap {
  width: 92%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.strategy_wrap .strategy_title {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 40px;
}

.strategy_cards {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.strategy_cards .strategy_card {
  flex: 1 1 240px;
  max-width: 280px;
  padding: 28px 20px 32px;
  border: 1px solid #e4e4e4;
  border-radius: 6px;
  background: #fff;
  text-align: center;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.strategy_cards .strategy_card:hover {
  transform: translateY(-10px);
  box-shadow: 0px 18px 32px 0px rgba(15, 109, 102, 0.16);
  border-color: #0f6d66;
}

.strategy_cards .strategy_card .strategy_num {
  font-size: 15px;
  font-weight: 700;
  color: #0f6d66;
  letter-spacing: 1px;
  text-align: left;
  padding-bottom: 8px;
  border-bottom: 1px solid #e4e4e4;
  margin-bottom: 16px;
}

.strategy_cards .strategy_card h4 {
  font-size: 17px;
  margin-bottom: 20px;
}

.strategy_cards .strategy_card .strategy_icon {
  width: 96px;
  height: 96px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background-color: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.35s ease, background-color 0.35s ease;
}

.strategy_cards .strategy_card:hover .strategy_icon {
  transform: scale(1.1) rotate(-6deg);
  background-color: #e5f3f1;
}

.strategy_cards .strategy_card .strategy_icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.strategy_cards .strategy_card .strategy_desc {
  font-size: 14px;
  line-height: 22px;
  color: #555555;
}

@media screen and (max-width: 958px) {
  .sec_insa .txt {
    width: auto;
    padding: 30px 30px;
  }
}

@media screen and (max-width: 768px) {
  /*공통*/
  .navbar .navbar_logo .isb_logo {
    max-width: 150px;
    width: 100%;
    height: auto;
  }

  .header_back .header_bg {
    display: none;
  }

  .header_bg_m {
    display: flex;
    width: 100%;
    height: auto;
  }

  .navbar .navbar_menu {
    display: none;
    flex-direction: column;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    top: 40%;
    padding: 2px 0px;
  }

  .navbar .navbar_menu li {
    width: 100%;
    text-align: center;
    padding-right: 0px;
    padding: 5px 0px;
    margin-bottom: 5px;
  }

  .navbar .navbar_menu li:hover {
    background-color: #dddddd;
    border-radius: 10px;
  }

  .navbar .navbar_menu li a:hover {
    color: #0e0e0e;
    font-weight: 1000;
  }

  .navbar .togglebtn {
    display: block;
  }

  .navbar_menu.active {
    display: flex;
  }

  .navbar.active {
    background-color: #292828dc;
    z-index: 1;
    height: 100%;
  }

  .header_back .header_bg {
    height: 200px;
  }

  .sub_txt {
    top: 100px;
  }

  .sec_nav .sec_menu {
    height: 54px;
  }

  .call {
    height: 70px;
  }

  .call i {
    font-size: 16px;
  }

  .call h3 {
    font-size: 18px;
  }

  .foot_box {
    padding: 10px 0px;
    padding-left: 20px;
    height: 350px;
  }

  .foot_info {
    display: none;
  }

  .foot_box .foot_logo {
    max-width: 130px;
    padding-bottom: 30px;
  }

  .foot_box .foot_info_m {
    display: flex;
    flex-direction: column;
    color: #e4e4e4;
    max-width: 310px;
    line-height: 28px;
  }

  /*ISB_main*/
  .header_main_back .header_main_bg {
    display: none;
  }

  .header_main_back .header_main_bg_m {
    display: flex;
    width: 100%;
    height: auto;
    vertical-align: middle;
  }

  .header_main_txt {
    max-width: 276px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    text-align: center;
  }

  .header_main_txt h1 {
    font-size: 23px;
  }

  .section1 {
    height: auto;
    padding: 40px 0px;
  }

  .section1 .sec1_menu {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    row-gap: 24px;
    column-gap: 10%;
    height: auto;
  }

  .section1 .sec1_menu li {
    width: 110px;
    height: 110px;
    margin: 0px;
    flex: 0 0 40%;
  }

  .section1 .sec1_menu .icon01 {
    width: 60px;
  }

  .section1 .sec1_menu h6 {
    font-size: 10px;
    padding: 2px 0px;
  }

  .section1 .sec1_menu .icon02 {
    width: 60px;
  }

  .section1 .sec1_menu .icon03 {
    width: 60px;
  }

  .section1 .sec1_menu .icon04 {
    width: 60px;
  }

  .section2 .sec2_box1 {
    flex-direction: column;
  }

  .section2 ul li {
    width: 100%;
    height: auto;
  }

  .section2 .sec2_box1 .box1_half_m {
    display: block;
    width: 100%;
    height: auto;
  }

  .section2 .sec2_box2 .box2_half_m {
    display: block;
    width: 100%;
    height: auto;
  }

  .section2 .sec2_box1 .box1_half {
    display: none;
  }

  .section2 .sec2_box2 .box2_half {
    display: none;
  }

  .section2 .sec2_box1 .box1_txt {
    display: flex;
    height: 200px;
    flex-direction: column;
    width: 100%;
    justify-content: center;
    text-align: center;
    align-items: center;
  }

  .section2 .sec2_box1 .box1_txt h2 {
    font-size: 22px;
  }

  .section2 .sec2_box1 .box1_txt h5 {
    font-size: 14px;
  }

  .section2 .sec2_box2 {
    flex-direction: column-reverse;
  }

  .section2 .sec2_box2 .box2_txt {
    display: flex;
    height: 200px;
    flex-direction: column;
    width: 100%;
    justify-content: center;
    text-align: center;
    align-items: center;
  }

  .section2 .sec2_box2 .box2_txt h2 {
    font-size: 22px;
  }

  .section2 .sec2_box2 .box2_txt h5 {
    font-size: 14px;
  }

  /*ISB_insa*/
  .sec_insa {
    margin-top: 0px;
  }

  .sec_insa .insa_img .insa_sec_img {
    display: none;
  }

  .sec_insa .insa_img .insa_sec_img_m {
    display: flex;
    width: 100%;
    height: auto;
  }

  /*ISB_vision*/
  .sec_vision {
    margin-top: 0px;
  }

  .sec_vision .vision_img .vision_i {
    display: none;
  }

  .sec_vision .vision_img .vision_i_m {
    display: flex;
    width: 100%;
    height: auto;
    justify-content: center;
    align-items: center;
    padding-bottom: 50px;
  }

  .strategy_cards .strategy_card {
    flex: 1 1 45%;
    max-width: 45%;
  }

  /*ISB_find*/
  .googlemap {
    margin-top: 0px;
    width: 94%;
    margin-top: 10px;
  }

  /*ISB_smartglass*/
  .sec .smartglass_txt {
    margin-bottom: 28px;
  }

  .sec .business_txt .busi_second_txt {
    font-size: 17px;
    padding: 25px 25px;
  }

  .sec .smartglass_txt .smart_second_txt {
    margin: 20px 20px;
  }

  .sec .glass_i {
    display: none;
  }

  .sec .glass_i_m {
    display: flex;
    margin-top: 20px;
    margin-bottom: 120px;
    width: 90%;
    height: auto;
  }

  .technolo {
    flex-direction: column;
  }

  .technolo .develop1 .develop_i1 {
    display: none;
  }

  .technolo .develop2 .develop_i2 {
    display: none;
  }

  .technolo .develop1 .develop_i1_m {
    display: block;
    width: 100%;
  }

  .technolo .develop2 .develop_i2_m {
    display: block;
    width: 100%;
  }

  .technolo .develop1 .develop_t {
    border: 1px solid #cccccc;
    padding: 10px 10px;
  }

  .technolo .develop2 .develop_t2 {
    border: 1px solid #cccccc;
    padding: 10px 10px;
  }

  /*ISB_business*/
  .sec .smart_i {
    display: none;
  }

  .sec .smart_i_m {
    display: flex;
    width: 80%;
  }

  .step {
    width: 95%;
    display: flex;
    flex-direction: column;
    height: auto;
    padding-bottom: 40px;
  }

  .step .step_down {
    height: auto;
  }

  .step .step_down .down {
    width: 20px;
  }

  .step .step1 {
    flex-direction: column;
    width: 100%;
    height: auto;
  }

  .step .step1 {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
  }

  .step1_txt {
    border: 1px solid #ececec;
  }

  .step .step1 .step1_i {
    display: none;
  }

  .step .step1 .step1_i_m {
    display: block;
    width: 100%;
  }

  .step .step2 .step2_i {
    display: none;
  }

  .step .step2 .step2_i_m {
    display: block;
    width: 100%;
  }

  .step .step3 .step3_i {
    display: none;
  }

  .step .step3 .step3_i_m {
    display: block;
    width: 100%;
  }

  .step .step4 .step4_i {
    display: none;
  }

  .step .step4 .step4_i_m {
    display: block;
    width: 100%;
  }

  .step .step5 .step5_i {
    display: none;
  }

  .step .step5 .step5_i_m {
    display: block;
    width: 100%;
  }

  .step .step1 .step1_txt {
    width: 100%;
    text-align: left;
    height: auto;
    padding: 5px 0px;
  }

  .step .step1 .step1_txt h5 {
    text-align: center;
  }

  .step .step2 {
    flex-direction: column;
    width: 100%;
    height: auto;
  }

  .step .step2 {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
  }

  .step2_txt {
    border: 1px solid #ececec;
  }

  .step .step2 .step2_txt {
    width: 100%;
    text-align: left;
    height: auto;
    padding: 5px 0px;
  }

  .step .step2 .step2_txt h5 {
    text-align: center;
  }

  .step .step3 {
    flex-direction: column;
    width: 100%;
    height: auto;
  }

  .step .step3 {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
  }

  .step3_txt {
    border: 1px solid #ececec;
  }

  .step .step3 .step3_txt {
    width: 100%;
    text-align: left;
    height: auto;
    padding: 5px 0px;
  }

  .step .step3 .step3_txt h5 {
    text-align: center;
  }

  .step .step4 {
    flex-direction: column;
    width: 100%;
    height: auto;
  }

  .step .step4 {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
  }

  .step4_txt {
    border: 1px solid #ececec;
  }

  .step .step4 .step4_txt {
    width: 100%;
    text-align: left;
    height: auto;
    padding: 5px 0px;
  }

  .step .step4 .step4_txt h5 {
    text-align: center;
  }

  .step .step5 {
    flex-direction: column;
    width: 100%;
    height: auto;
  }

  .step .step5 {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
  }

  .step5_txt {
    border: 1px solid #ececec;
  }

  .step .step5 .step5_txt {
    width: 100%;
    text-align: left;
    height: auto;
    padding: 5px 0px;
  }

  .step .step5 .step5_txt h5 {
    text-align: center;
  }
}

@media screen and (max-width: 530px) {
  /*공통*/
  .navbar .navbar_menu {
    top: 40%;
  }
  .navbar .navbar_menu li {
    padding: 6px 1px;
    line-height: 14px;
  }

  .navbar .navbar_menu li a {
    font-size: 8px;
  }

  .navbar .navbar_logo .isb_logo {
    width: 105px;
  }

  .header_main_txt {
    max-width: 220px;
  }

  .header_main_txt h1 {
    font-size: 16px;
  }

  .navbar .togglebtn {
    font-size: 14px;
  }

  .section2 .sec2_box1 .box1_txt {
    height: 100px;
  }

  .section2 .sec2_box2 .box2_txt {
    height: 100px;
  }

  .section2 .sec2_box1 .box1_txt h2 {
    font-size: 16px;
  }

  .section2 .sec2_box2 .box2_txt h2 {
    font-size: 16px;
  }

  .section2 .sec2_box1 .box1_txt h5 {
    font-size: 8px;
  }

  .section2 .sec2_box2 .box2_txt h5 {
    font-size: 8px;
  }

  .call i {
    font-size: 13px;
  }

  .call h3 {
    font-size: 13px;
  }

  .sub_txt {
    font-size: 10px;
  }

  .sec_nav .sec_menu li a {
    font-size: 12px;
  }

  .navbar .navbar_menu li {
    padding: 4px 1px;
  }

  .navbar .navbar_menu li:hover {
    background-color: #dddddd;
    border-radius: 5px;
  }

  .navbar .navbar_menu li a {
    font-size: 12px;
    line-height: 10px;
  }

  .navbar .navbar_menu li a:hover {
    color: #0e0e0e;
    font-weight: 1000;
  }

  .foot_box .foot_logo .footer_logo {
    max-width: 80px;
  }

  .foot_box .foot_info_m p {
    font-size: 12px;
    line-height: 20px;
  }

  /*ISB_insa*/
  .sec_insa .txt h2 {
    font-size: 20px;
  }

  /*ISB_find*/
  .map .map_txt h2 {
    font-size: 16px;
  }

  .map .map_txt p {
    font-size: 8px;
    line-height: 20px;
  }

  /*ISB_business*/
  .step .step1 {
    height: 280px;
  }

  .step .step2 {
    height: 280px;
  }

  .step .step3 {
    height: 280px;
  }

  .step .step4 {
    height: 280px;
  }

  .step .step5 {
    height: 280px;
  }
}

@media screen and (max-width: 430px) {
  .navbar .navbar_logo {
    left: 10px;
    top: 10px;
  }

  .navbar .togglebtn {
    top: 15px;
    right: 10px;
  }

  .sec_nav .sec_menu {
    letter-spacing: 0px;
  }

  .sec_insa .txt h2 {
    font-size: 18px;
  }

  .sec_insa .txt .p_1,
  .sec_insa .txt .p_2 {
    font-size: 15px;
  }

  .sub_txt h1 {
    top: 60%;
    font-size: 16px;
  }

  .sec .smartglass_txt {
    margin: 40px 0px;
  }

  .sec .smartglass_txt .smart_first_txt {
    font-size: 20px;
    margin-bottom: 15px;
    width: 100%;
    text-align: center;
  }

  .sec .smartglass_txt .smart_second_txt {
    font-size: 15px;
    line-height: 26px;
  }

  .sec .smartglass_txt .smart_second_txt .txt_last {
    font-size: 12px;
  }

  .sec .business_txt .busi_first_txt {
    margin-top: 40px;
  }

  .sec .business_txt .busi_second_txt {
    font-size: 15px;
    line-height: 20px;
  }

  .technolo .develop1 .develop_t .develop_t2 {
    font-size: 12px;
  }

  .technolo .develop2 .develop_t2 .develop_t4 {
    font-size: 12px;
  }

  .sec .glass_i_m {
    margin-top: 10px;
    margin-bottom: 80px;
  }

  .sec .smartglass_txt .smart_third_txt {
    font-size: 20px;
  }

  .technolo .develop1 .develop_t .develop_t1 {
    font-size: 15px;
  }

  .technolo .develop2 .develop_t2 .develop_t3 {
    font-size: 15px;
  }

  .sec .business_txt .busi_first_txt {
    font-size: 20px;
    padding-bottom: 10px;
  }

  .sec .business_txt .busi_third_txt {
    font-size: 20px;
  }

  .step .step1_txt h5 {
    font-size: 15px;
  }

  .step .step2_txt h5 {
    font-size: 15px;
  }

  .step .step3_txt h5 {
    font-size: 15px;
  }

  .step .step4_txt h5 {
    font-size: 15px;
  }

  .step .step5_txt h5 {
    font-size: 15px;
  }

  .step .step1_txt ul {
    padding-top: 15px;
    line-height: 28px;
    font-size: 14px;
  }

  .step .step2_txt ul {
    padding-top: 15px;
    line-height: 28px;
    font-size: 14px;
  }

  .step .step3_txt ul {
    padding-top: 15px;
    line-height: 28px;
    font-size: 14px;
  }

  .step .step4_txt ul {
    padding-top: 15px;
    line-height: 28px;
    font-size: 14px;
  }

  .step .step5_txt ul {
    padding-top: 15px;
    line-height: 28px;
    font-size: 14px;
  }

  .step .step1 {
    height: 180px;
  }

  .step .step2 {
    height: 180px;
  }

  .step .step3 {
    height: 180px;
  }

  .step .step4 {
    height: 180px;
  }

  .step .step5 {
    height: 180px;
  }

  .step .step5_txt ul {
    word-spacing: 0px;
  }
}

/* 스크롤 리빌 애니메이션 */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }
.reveal-delay-6 { transition-delay: 0.48s; }

/* 방향성 변형: 왼쪽에서 슬라이드 */
.reveal-left {
  transform: translateX(-56px);
}

.reveal-left.reveal-visible {
  transform: translateX(0);
}

/* 방향성 변형: 오른쪽에서 슬라이드 */
.reveal-right {
  transform: translateX(56px);
}

.reveal-right.reveal-visible {
  transform: translateX(0);
}

/* 방향성 변형: 그냥 서서히 밝아지기만 (이동 없음) */
.reveal-fade {
  transform: none;
}

.reveal-fade.reveal-visible {
  transform: none;
}

/* 방향성 변형: 살짝 확대되며 밝아짐 */
.reveal-scale {
  transform: scale(0.94);
}

.reveal-scale.reveal-visible {
  transform: scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* 스마트공장/IT컨설팅 이미지·아이콘 인터랙션 */
.step .step1_i,
.step .step2_i,
.step .step3_i,
.step .step4_i,
.step .step5_i,
.step .step1_i_m,
.step .step2_i_m,
.step .step3_i_m,
.step .step4_i_m,
.step .step5_i_m {
  transition: transform 0.4s ease;
}

.step .step1:hover .step1_i,
.step .step2:hover .step2_i,
.step .step3:hover .step3_i,
.step .step4:hover .step4_i,
.step .step5:hover .step5_i {
  transform: scale(1.04);
}

.smart_intro_wrap img,
.gray-wrap img {
  transition: transform 0.4s ease;
}