@charset "UTF-8";
@import url(http://fonts.googleapis.com/earlyaccess/nanumgothic.css);
@import url(http://cdn.rawgit.com/innks/NanumSquareRound/master/nanumsquareround.min.css);
@import url(http://fonts.googleapis.com/earlyaccess/notosanskr.css);
@import url('https://fonts.googleapis.com/css?family=Montserrat');


/*instruction*/
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.clear:after {
  clear: both;
  display: block;
  content: "";
}

.transition {
  transition: all 0.2s;
  -o-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -webkit-transition: all 0.2s;
  -ms-transition: all 0.2s;
}

.boxshadow {
  box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  -o-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  -ms-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.white {
  color: #fff !important;
}

.mar_0 {
  margin: 0px !important;
}

.mar_t_10 {
  margin-top: 10px !important;
}

.mar_t_20 {
  margin-top: 20px;
}

.mar_0_a {
  margin: 0 auto;
}

.pa_b_20 {
  padding-bottom: 20px;
}

.pa_0 {
  padding: 0 !important;
}

.fl_r {
  float: right;
}

.border_0 {
  border: 0 !important;
}

dl,
ol,
ul {
  margin: 0;
}

.row {
  margin: 0;
}

.center {
  text-align: center;
}

.delay4 {
  animation-delay: 0.4s;
  -webkit-animation-delay: 0.4s;
}

.delay6 {
  animation-delay: 0.6s;
  -webkit-animation-delay: 0.6s;
}

.delay9 {
  animation-delay: 0.9s;
  -webkit-animation-delay: 0.9s;
}

.delay8 {
  animation-delay: 0.8s;
  -webkit-animation-delay: 0.8s;
}

.delay12 {
  animation-delay: 1.2s;
  -webkit-animation-delay: 1.2s;
}

.tabcontent ul:not(.slick-dots)li:before {
  content: "";
  margin-left: -12px;
  margin-right: 7px;
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #6666CC;
  vertical-align: middle;
}

.tabcontent li.none:before {
  display: none;
}

body {
  scrollbar-face-color: #6890FF;
  overflow-x: hidden;
  overflow-y: scroll;
  font-family: 'Pretendard', sans-serif;
  line-height: 1.8;
  word-break: keep-all;
}

p {
  line-height: 1.75;
}

a:hover {
  color: #6890FF;
}

.text-primary {
  color: #402EFF !important;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  font-family: 'Pretendard', sans-serif;
}

section {
  min-height: 100vh;
  height: 100%;
  padding: 100px 0;
  position: relative;
}

section:last-child {
  padding-bottom: 4rem;
}

section h2.section-heading {
  font-size: 40px;
  margin-top: 0;
  margin-bottom: 15px;
}

section h3.section-subheading {
  font-size: 16px;
  font-weight: 400;
  text-transform: none;
  font-family: 'Pretendard', sans-serif;
}

section h3.section-subheading-title {
  font-size: 25px;
  margin-bottom: 70px;
}


.btn {
  font-family: 'Pretendard', sans-serif;
  font-weight: 700;
}

.btn-xl {
  font-size: 17px;
  padding: 10px 20px;
  line-height: 120%;
}

.btn-primary {
  background-color: #6890FF;
  border-color: #6890FF;
  color: #454a55;
}

.btn-primary:active,
.btn-primary:focus,
.btn-primary:hover {
  background-color: #402EFF !important;
  border-color: #402EFF !important;
  color: white;
}

.btn-primary:active,
.btn-primary:focus {
  -webkit-box-shadow: 0 0 0 0.2rem rgba(254, 209, 55, 0.5) !important;
  box-shadow: 0 0 0 0.2rem rgba(254, 209, 55, 0.5) !important;
}

::selection {
  background: #FFBB0D;
  text-shadow: none;
}

::-moz-selection {
  background: #FFBB0D;
  text-shadow: none;
}

img::selection {
  background: transparent;
}

img::-moz-selection {
  background: transparent;
}

.navbar-expand-lg>.container {
  padding-left: 15px;
  padding-right: 15px;
}

#mainNav {
  background-color: rgba(33, 37, 41, 0.6);
}

#mainNav .top_logo {
  max-height: 50px;
}

#mainNav .navbar-toggler {
  font-size: 12px;
  right: 0;
  padding: 13px;
  text-transform: uppercase;
  color: white;
  border: 0;
  font-family: 'Pretendard', sans-serif;
}

#mainNav .navbar-brand {
  color: #fed136;
  font-family: 'Pretendard', sans-serif;
}

#mainNav .navbar-brand.active,
#mainNav .navbar-brand:active,
#mainNav .navbar-brand:focus,
#mainNav .navbar-brand:hover {
  color: #fec503;
}

#mainNav .menu {
  font-size: 100%;
  font-weight: 400;
  padding: 0.75em 0;
  letter-spacing: 1px;
  color: white;
  transition: 0.2s;
  -webkit-transition: 0.2s;
  display: block;
  font-family: 'Pretendard', sans-serif;
}

#mainNav .menu.active,
#mainNav .menu:hover {
  color: #baccff;
}

.navbar {
  padding: 0;
}

/* // Mobile Menu // */

.m_dropdown {
  width: 100%;
  top: 100%;
}

.m_dropdown ul {
  margin-bottom: 0;
}

.m_dropdown button,
.m_dropdown a {
  color: #ccc;
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 25px;
  font-size: 15px;
  font-weight: bold;
  background: rgba(0, 0, 0, 0.8);
}

.m_dropdown button:after {
  content: "";
  margin-top: 5px;
  right: 20px;
  display: inline-block;
  position: absolute;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 10px solid #6890FF;
}

.m_dropdown a {
  font-size: 13px;
}

.m_dropdown button:hover,
.m_dropdown a:hover {
  color: #fff;
  background: #3e3e3e;
}

.dropdow_menu {
  position: relative;
  border-bottom: 1px solid #454545;
}

.dropdow_menu ul {
  border-top: 1px solid #454545;
}

.dropdow_menu ul li a {
  padding: 10px 35px;
}



/* Removed legacy GNB styles */

/* Removed legacy GNB dropdown and shrink styles */

/* // Side Nav // */
#sideNav {
  display: none;
  position: fixed;
  top: 50%;
  right: 20px;
  z-index: 52;
  margin-top: -138px;
  background: url("../images/sideMenu_shadow.png") no-repeat 1px 1px;
}

#sideNav li.slide {
  position: relative;
  display: block;
  width: 20px;
  height: 20px;
  cursor: pointer;
  margin: 0 auto;
  margin-top: 28px;
}

#sideNav li.slide:first-child {
  margin-top: 0;
}

#sideNav li.slide:first-child:after {
  top: 20px;
  height: 30px;
}

#sideNav li.slide:after {
  display: block;
  content: '';
  width: 1px;
  height: 30px;
  background: #fff;
  position: absolute;
  top: 20px;
  left: 9px;
  box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  transition: 0.2s;
  -webkit-transition: 0.2s;
}

#sideNav li.slide:nth-child(5):after {
  height: 0;
}

#sideNav li.slide a {
  color: #fff;
  border-radius: 50%;
  display: block;
  height: 100%;
  transition: 0.2s;
  -webkit-transition: 0.2s;
}

#sideNav li.slide a.active {
  background: #402EFF;
  transition: 0.2s;
  -webkit-transition: 0.2s;
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.3);
}

#sideNav i.next {
  text-align: center;
  width: 20px;
  line-height: 20px;
  font-size: 15px;
  font-weight: bold;
  margin-top: 1px;
}

#sideNav li.slide a.active i.next {
  font-size: 14px;
}

#sideNav li.gotop {
  display: block;
  margin-top: 18px;
  padding: 0 5px 5px 5px;
}

#sideNav li.gotop .basic {
  display: block;
}

header.masthead {
  text-align: center;
  color: white;
  background-attachment: scroll;
}

header .opa_bla_bg {
  background: rgba(0, 0, 0, 0.3);
  height: 250px;
  top: 31%;
}

#section1 .opa_bla_bg {
  background: rgba(0, 0, 0, 0.3);

}

.opa_bla_bg {
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 0;
}

header .opa_bla_bg {
  z-index: 50;
}

.opa_bla_bg2 {
  top: 0;
  background: rgba(0, 0, 0, 0.7);
}

header.masthead .intro-text {
  top: 37%;
  position: absolute;
  width: 100%;
  z-index: 51;
}

header.masthead .intro-text .intro-lead-in {
  font-size: 22px;
  line-height: 22px;
  margin-bottom: 25px;
  font-family: 'Pretendard', sans-serif;
}

header.masthead .intro-text .intro-heading {
  font-size: 50px;
  font-weight: 700;
  line-height: 50px;
  margin-bottom: 25px;
  font-family: 'Pretendard', sans-serif;
}

@media (min-width: 768px) {
  header.masthead .intro-text .intro-lead-in {
    font-size: 40px;
    line-height: 40px;
    margin-bottom: 25px;
    font-family: 'Pretendard', sans-serif;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 75px;
    font-weight: 700;
    line-height: 75px;
    font-family: 'Pretendard', sans-serif;
  }
}



@media all and (max-width:1400px) {
  #visual .bx-controls-direction a.bx-prev {
    right: auto;
    margin-right: auto;
    left: 15px;
    transition: 0.2s;
    -webkit-transition: 0.2s;
  }

  #visual .bx-controls-direction a.bx-next {
    left: auto;
    margin-left: auto;
    right: 15px;
    transition: 0.2s;
    -webkit-transition: 0.2s;
  }
}


.next-button {
  position: absolute;
  left: 50%;
  z-index: 50;
  transform: translate(-50%, 0);
  -o-transform: translate(-50%, 0);
  -ms-transform: translate(-50%, 0);
  -moz-transform: translate(-50%, 0);
  -webkit-transform: translate(-50%, 0);
  -webkit-animation: mouse 1s ease infinite;
  -moz-animation: mouse 1s ease infinite;
  -ms-animation: mouse 1s ease infinite;
  -o-animation: mouse 1s ease infinite;
  animation: mouse 1s ease infinite;
}

.next-button,
.next-button:active,
.next-button:link,
.next-button:visited {
  color: #eee;
}

.next-button:hover {
  color: #fff;
}

@keyframes mouse {
  0% {
    bottom: 60px
  }

  50% {
    bottom: 40px
  }

  100% {
    bottom: 60px
  }
}

header {
  min-height: 100vh;
  height: 100%;
}

header .slick-slide div div {
  position: relative;
  height: 100vh;
}

header .slick-slide img {
  position: absolute;
  left: 50%;
  transform: translate(-50%, 0);
}

@media (orientation: landscape) {

  header .slick-slider,
  header .slick-list,
  header .slick-track,
  header .slick-slide,
  header .slick-slide>div {
    width: 100%;
    height: auto;
  }

  header .slick-slide img {
    min-width: 100%;
    width: 100%;
    height: auto;
    min-height: auto;
  }
}

@media (orientation: portrait) {

  header .slick-slider,
  header .slick-list,
  header .slick-track,
  header .slick-slide,
  header .slick-slide>div {
    width: auto;
    height: 100vh;
  }

  header .slick-slide img {
    min-width: auto;
    width: auto;
    height: 100%;
    min-height: 100%;
  }
}

#section1 {
  background: url("../images/section1_bg.jpg") no-repeat center center;
  background-size: auto 100%;
}

#section1 .wow {
  -webkit-animation-delay: 0.6s;
  animation-delay: 0.6s;
}

#section1 .bg {
  position: absolute;
  width: 80%;
  height: 60%;
  top: 20%;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.6);
  left: 10%;
}

#section1 .connection {
  height: 1px;
  background: rgba(255, 255, 255, 0.7);
  top: 50%;
  width: 52%;
  left: 25%;
}

#section1 .connection2 {
  width: 42%;
  left: 29%;
  transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -webkit-transform: rotate(-45deg);
}

#section1 .connection3 {
  width: 42%;
  left: 29%;
  transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
}


#section1 .business_diagram {
  text-align: center;
  position: relative;
  padding-bottom: 70%;
  padding-top: 10%;
}

#section1 .col-md-4 {
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  width: 110px;
  height: 110px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  overflow: hidden;
  padding: 0;
}

#section1 .col-md-4:hover {
  border: 1px solid #402EFF;
}

#section1 .col-md-4:hover .b_bg {
  top: 0;
  transition: 0.2s;
  -webkit-transition: all 0.2s;
  background: rgba(64, 46, 255, 0.8);
}

#section1 .col-md-4 .fa-stack {
  transition: all 0.2s;
  -webkit-transition: all 0.2s;
  width: 2em;
  font-size: 30px;
}

#section1 .col-md-4:hover i {
  transform: rotate(-10deg);
  -ms-transform: rotate(-10deg);
  -webkit-transform: rotate(-10deg);
  transition: all 0.2s;
  -webkit-transition: all 0.2s;

}

#section1 .col-md-4:hover .text-muted {
  color: #fff !important;
}

#section1 .col-md-4 a {}

#section1 .business1 {
  margin-top: -25%;
  margin-left: -17%;
}

#section1 .business2 {
  margin-left: -35%;
}

#section1 .business3 {
  margin-top: 25%;
  margin-left: -17%;
}

#section1 .business4 {
  margin-top: -25%;
  margin-left: 17%;
}

#section1 .business5 {
  margin-left: 35%;
}

#section1 .business6 {
  margin-top: 25%;
  margin-left: 17%;
}

#section1 .row:first-child {
  margin: 0px;
}

#section1 .b_bg {
  width: 100%;
  height: 100%;
  background: #6890FF;
  position: absolute;
  left: 0;
  top: 0%;
  z-index: -1;
  transition: 0.2s;
  -webkit-transition: 0.2s;
}

#section1 .col-md-4 .text-muted {
  color: #fff !important;
  padding-top: 15px;
}

#section1 .service-heading {
  margin: 0;
  text-transform: none;
  font-size: 0.7rem;
  color: #fff;
}

#section1 .col-md-4 .text-muted {
  display: none;
}

#section1 .next-button {
  margin-bottom: -30px;
}

#section1 .col-md-4:nth-child(1) .service-heading,
#section1 .col-md-4:nth-child(2) .service-heading {
  margin-top: -10px;
}

#section2 h4,
#section3 h4 {
  font-size: 1.2rem;
}

#section2 .container {
  margin-bottom: 10px;
}

#section2 .col-md-4:nth-child(4),
#section2 .col-md-4:nth-child(5),
#section2 .col-md-4:nth-child(6) {
  animation-delay: 0.6s;
  -webkit-animation-delay: 0.6s;
}

#section2 .store_link {
  top: -50px;
  right: 10px;
  padding: 7px 7px 4px 7px;
  border-radius: 3px;
  background: #6890FF;
  color: #fff;
  font-weight: 500;
  font-size: 12px;
  cursor: pointer;
  box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.4);
  transition: all 0.2s;
  -webkit-transition: all 0.2s;
  display: none;
}

#section2 .store_link:hover {
  background: #415fb5;
  box-shadow: 0px 0px 1px rgba(0, 0, 0, 0.5);
}

#section2 .store_link i {
  margin-bottom: -3px;
  line-height: 100%;
}

.section .row {
  text-align: center;
}

.section-item {
  margin: 0 auto 15px auto;
}

.section-item .list_shadow {
  box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
  -o-box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
  -ms-box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
  -moz-box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
  -webkit-box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
  margin: 0 auto;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.section-item .section-link {
  position: relative;
  display: block;
  max-width: 400px;
  margin: 0 auto;
  cursor: pointer;
}

.section-item .section-link .section-hover {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-transition: all ease 0.5s;
  transition: all ease 0.5s;
  opacity: 0;
  /* background: rgba(254, 209, 54, 0.9); */
  background: rgba(64, 46, 255, 0.8);
}

.section-item .section-link .section-hover:hover {
  opacity: 1;
}

.section-item .section-link .section-hover .section-hover-content {
  font-size: 20px;
  position: absolute;
  top: 50%;
  width: 100%;
  height: 20px;
  margin-top: -12px;
  text-align: center;
  color: white;
}

.section-item .section-link .section-hover .section-hover-content i {
  margin-top: -12px;
}

.section-item .section-link .section-hover .section-hover-content h3,
.section-item .section-link .section-hover .section-hover-content h4 {
  margin: 0;
}

.section-item .section-caption {
  max-width: 400px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
}

#section2 .section-item .section-caption {
  border-top: 1px solid #ddd;
  margin-top: -10px;
  height: 84px;
}

.section-item .section-caption h4 {
  margin: 0;
  text-transform: none;
}

.section-item .section-caption p {
  font-size: 12px;
  margin: 0;
  font-family: 'Nanum Square', ‘NanumSquareRound’, 'Nanum Gothic', 'Roboto', Arial, 'NotoKrR', sans-serif;
}

#section2 * {
  z-index: 2;
}

#section2 .row .text_box {
  font-size: 15px;
  text-indent: 10px;
  margin-bottom: 105px;
  padding: 0 20px;
}

#section2 .next-button {
  margin-bottom: -25px;
}



#section3 h2.section-heading,
#section4 h2.section-heading {
  padding-top: 10%;
}

#section3 .container {
  padding-top: 20px;
}

#section3 .col-md-4:nth-child(2) {
  animation-delay: 0.6s;
  -webkit-animation-delay: 0.6s;
}

#section3 .col-md-4:nth-child(3) {
  animation-delay: 0.9s;
  -webkit-animation-delay: 0.9s;
}

#section3 h4 {
  font-family: 'Roboto';
}

#section3 .row_box {
  padding-top: 10%;
}

#section3 .list_shadow {
  border: 1px solid rgba(255, 255, 255, 0.8);
}

#section3 .next-button {
  margin-bottom: -30px;
}

#section4 .row_box {
  padding-top: 10%;
}

footer {
  padding: 20px 0 25px 0;
  text-align: center;
  color: #777;
  background: rgba(0, 0, 0, 0.05);
  border-top: 1px solid #ccc;
}

footer .foot_logo a {
  height: 50px;
  display: inline-block;
  left: 15px;
}

footer .foot_logo img {
  height: 100%;
}

footer .copyright {
  font-size: 90%;
  text-transform: none;
  padding-top: 10px;
  margin-bottom: -5px;
  width: 100%;
  right: 0;
  bottom: 0;
  color: #A7A7A7;
  font-family: 'Pretendard', sans-serif;
}

footer ul.quicklinks {
  font-size: 90%;
  text-align: left;
  text-transform: none;
  margin: 10px 0 20px 135px;
  font-weight: bold;
  font-family: 'Pretendard', sans-serif;
}

@media (max-width: 991px) {
  #mainNav .top_logo {
    max-height: 46px;
    margin-left: 10px;
    margin-top: 2px;
    margin-bottom: 2px;
  }

  footer .foot_logo a {
    display: none;
  }

  footer .container {
    /* background: url("../images/foot_logo_bg.png")no-repeat center center; */
    /* background-size: auto 100%; */
  }
}

@media (min-width: 320px) {}

@media (min-width: 500px) {}

@media (min-width: 540px) {}

@media (min-width: 576px) {
  .container {
    max-width: 100%;
  }

  #section1 .col-md-4 {
    width: 167px;
    height: 167px;
  }

  #section1 h4.service-heading {
    font-size: 1rem;
    margin-top: 0px;
  }

  #section1 .b_bg {
    top: 55%;
  }

  #section1 .col-md-4 .fa-stack {
    font-size: 50px;
  }

  #section1 .connection {
    width: 38%;
    left: 31%;
  }

  #section1 .connection2 {
    width: 29%;
    left: 35%;
  }

  #section1 .connection3 {
    width: 29%;
    left: 35%;
  }

  footer .copyright {
    width: 100%;
  }
}

@media (min-width: 640px) {
  #section1 .container {
    max-width: 540px;
  }

  .container {
    max-width: 100%;
  }

  .col-md-4 {
    -webkit-flex: 0 0 33.333333%;
    -ms-flex: 0 0 33.333333%;
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
  }
}

@media (min-width: 768px) {
  header {
    max-height: 100%;
  }

  #section2,
  #section3,
  #section4 {
    min-height: 100vh;
    height: 100%;
  }

  #sideNav {
    display: block;
  }

  section {
    padding: 95px 0 50px 0;
  }

  #section1 .service-heading {
    margin: 15px 0;
  }

  section .section-item .section-caption p {
    font-size: 15px;
  }

  #section1 .connection {
    width: 46%;
    left: 27%;
    top: 50%;
  }

  #section1 .connection2 {
    width: 38%;
    left: 31%;
  }

  #section1 .connection3 {
    width: 38%;
    left: 31%;
  }

  .next-button {
    display: block;
  }

  #section3 .next-button {
    margin-bottom: 0px;
  }

  footer .address {
    padding-left: 0px;
  }

  footer ul.quicklinks {
    margin: 0;
    margin-top: -15px;
    padding: 0 0 20px 0;
    position: absolute;
    right: 15px;
  }
}

@media (min-width: 992px) {
  #mainNav {
    -webkit-transition: padding-top 0.3s, padding-bottom 0.3s;
    transition: padding-top 0.3s, padding-bottom 0.3s;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  }

  #mainNav .navbar-brand {
    font-size: 1.75em;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
  }

  #mainNav .navbar-nav .nav-item .menu {
    padding: 1.4em 1.1em 1em 1.1em !important;
  }

  .m_dropdown {
    display: none;
  }

  #section1 .business_diagram {
    padding-top: 0;
  }

  #section1 .connection {
    width: 52%;
    left: 24%;
    top: 50%;
  }

  #section1 .connection2 {
    width: 45.4%;
    left: 27.3%;
  }

  #section1 .connection3 {
    width: 45.4%;
    left: 27.3%;
  }

  .section4-customer .rounded-circle {
    width: 225px;
    height: 225px;
  }

  .section4-customer .rounded-circle i {
    font-size: 80px;
    line-height: 225px;
  }

  footer {
    padding-bottom: 10px;
  }

  footer .foot_logo a {
    position: relative;
    margin-bottom: 10px;
  }

  footer .address {
    text-align: center;
  }

  footer .list-inline-item {
    text-align: right;
    border-radius: 2px;
  }

  footer .list-inline-item a {
    padding: 3px 7px;
    background: #eee;
    border: 1px solid #ccc;
    display: inline-block;
  }

  footer .list-inline-item:not(:last-child) {
    margin-right: 0;
  }

  footer ul.quicklinks {
    position: relative;
    padding: 10px 0 0 0;
    margin: 0;
    right: auto;
    width: 100%;
    text-align: center;
  }
}

@media (min-width: 1200px) {

  #gnb>li>ul>li {
    margin-left: 10px;
  }

  #gnb>li>ul>li a {
    font-size: 14px;
  }

  #section1 {
    background-size: 100% auto;
  }

  #section1 .col-md-4 {
    width: 200px;
    height: 200px;
  }

  #section1 .business3 .service-heading,
  #section1 .business4 .service-heading,
  #section1 .business5 .service-heading,
  #section1 .business6 .service-heading {
    margin-bottom: 5px;
  }

  #section1 .col-md-4 .text-muted {
    display: block;
  }

  #section1 h4.service-heading {
    font-size: 1rem;
    margin-top: -15px;
  }

  #section1 .b_bg {
    top: 70%;
  }

  #section1 .col-md-4 .fa-stack {
    font-size: 55px;
  }

  #section1 .business1 h4.service-heading,
  #section1 .business2 h4.service-heading {
    margin-top: -5px;
  }

  #section3,
  #section4 {
    background-size: 100% auto;
  }

}


@media (min-width: 1280px) {
  #gnb>li>ul>li {
    margin-left: 10px;
  }

  #gnb>li>ul>li a {
    font-size: 14px;
  }
}

/* iPhneX세로 */
@media (min-width:375px) and (orientation : portrait) {

  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0;
  }

  #section1 {
    padding: 120px 0;
  }

  #section1 .container .business_diagram {
    padding-bottom: 120%;
  }
}

/* Galaxy S5 세로*/
@media (min-width:360px) and (orientation : portrait) {

  section {
    padding: 40px 0 50px 0;
  }
  
  section:last-child {
  	padding-bottom: 2rem;
  }

  #section1 {
    padding: 100px 0 0 0;
  }

  #section1 .business_diagram {
    padding-bottom: 100%;
  }

  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0%;
  }

  #section3 .container,
  #section4 .container {
    padding-top: 0px;
  }
}

/* iPhne 5/SE 가로 */
@media (min-width:568px) and (orientation : landscape) {

  header .opa_bla_bg {
    height: 110px;
  }

  header.masthead .intro-text .intro-lead-in {
    font-size: 17px;
    margin-bottom: 0px;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 30px;
  }

  header .next-button {
    margin-bottom: -27px;
  }

  section {
    padding: 80px 0 100px;
  }

  #section3 .container,
  #section4 .container {
    padding-top: 0px;
  }

  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0%;
  }
}

/* Galaxy s5가로 */
@media (min-width:640px) and (orientation : landscape) {
  header .opa_bla_bg {
    height: 150px;
    top: 29%;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 40px;
  }

  header .next-button {
    margin-bottom: -27px;
  }

  section {
    padding-top: 80px;
  }

  #section3 .row_box {
    padding-top: 0%;
  }

  #section4 .container {
    padding-top: 0px;
  }

  #section4 .row_box {
    padding-top: 5%;
  }

  #section3 .container {
    padding-top: 0px;
  }

  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0%;
  }
}

/* Pixel2 */
@media (min-width:411px) and (orientation : portrait) {
  #section1 .business_diagram {
    padding-bottom: 70%;
  }
}

/* Pixel2 XL 세로 */
@media (min-width:411px) and (orientation : portrait) {
  #section1 .container .business_diagram {
    padding-bottom: 110%;
  }
}

/* Pixel2 XL 가로*/
@media (min-width:823px) and (orientation : landscape) {}

/* iPhone 5/SE Plus 세로 */
@media (min-width:320px) and (orientation : portrait) {
  section {
    padding: 40px 0 50px 0;
  }

  #section1 .business_diagram {
    padding-bottom: 100%;
  }

  #section3 .container,
  #section4 .container {
    padding-top: 0px;
  }

  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0%;
  }
}

/* iPhone 6/7/8Plus 세로 */
@media (min-width:414px) and (orientation : portrait) {
  #section1 .business_diagram {
    padding-bottom: 100%;
  }
}

/* iPhone 6/7/8 세로 */
@media (min-width:375px) and (orientation : portrait) {
  #section1 .business_diagram {
    padding-bottom: 100%;
  }
}

/* iPhone 6/7/8 가로 */
@media (min-width:667px) and (orientation : landscape) {
  header.masthead .intro-text .intro-heading {
    font-size: 50px;
  }
}

@media (max-width:812px) {
  #sideNav {
    display: none;
  }
}

/* iPhneX가로 */
@media (min-width:812px) and (orientation : landscape) {
  header .opa_bla_bg {
    top: 30%;
    height: 160px;
  }

  section {
    padding: 90px 0 110px 0;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 50px;
  }

  header .next-button {
    margin-bottom: -30px;
  }

  #section1 .container {
    max-width: 720px;
  }

  #section3 .row_box {
    margin-top: 25%;
  }

  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0;
  }

  #section3 .row_box {
    margin-top: 0px;
  }

  #section4 {
    padding: 60px 0 80px 0;
  }

}

/* i Pad 세로 */
@media (min-width:768px) and (orientation : portrait) {
  header.masthead .intro-text .intro-lead-in {
    font-size: 40px;
    margin-bottom: 25px;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 75px;
  }

  header .opa_bla_bg {
    height: 320px;
    top: 31%;
  }

  section,
  #section4 {
    padding: 130px 0 60px 0;
  }

  #section1 .container {
    max-width: 720px;
  }

  #section1 .container .business_diagram {
    padding-bottom: 70%;
    margin-top: 5%;
  }

  #section2 .row_box {
    margin-top: 8%;
  }

  #section3 .row_box,
  #section4 .row_box {
    margin-top: 17%;
  }
}

/* i Pad 가로 */
@media (min-width:1024px) and (max-height:768px) and (orientation : landscape) {
  header .slick-slide img {
    min-width: auto;
    width: auto;
    height: 100%;
    min-height: 100vh;
  }

  header.masthead .intro-text .intro-lead-in {
    font-size: 40px;
    line-height: 40px;
    margin-bottom: 25px;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 70px;
  }

  header .opa_bla_bg {
    top: 31%;
    height: 250px;
  }

  #section1 .container {
    max-width: 800px;
  }

  #section1,
  #section2 {
    padding: 100px 0 0px 0;
  }

  #section3,
  #section4 {
    padding: 140px 0 0px 0;
  }

  #section3 .row_box {
    margin-top: 10%;
  }

  /*   section .container{
    max-width:920px;
  } */
  section .container .row_box {
    /* padding-top: 0; */
  }

  #section1 .connection {
    width: 48.5%;
    left: 25.6%;
  }

  #section1 .connection2 {
    width: 40.7%;
    left: 29.7%;
  }

  #section1 .connection3 {
    width: 40.7%;
    left: 29.7%;
  }

  #section2 a.section-link {
    height: 175px;
    overflow: hidden;
  }

  #section2 .section-item {
    margin: 0 auto 15px auto;
  }

  #section2 h4,
  #section3 h4 {
    font-size: 1rem;
  }

  #section2 .section-item .section-caption {
    padding: 10px 20px;
    height: 60px;
  }

  #section2 .store_link {
    right: 10px;
    font-size: 10px;
  }

  #section4 .row_box {
    margin-top: 0%;
  }

  section .section-item .section-caption p {
    font-size: 12px;
  }
}

/* i Pad Pro세로 */
@media (min-width:1024px) and (min-height:1366px) and (orientation : portrait) {
  #section1 .container {
    max-width: 920px;
  }

  #section1,
  #section2 {
    padding: 20% 0;
  }

  .container {
    max-width: 920px;
  }

  #section1 .container {
    max-width: 920px;
  }

  #section1 .business_diagram {
    padding-top: 15%;
  }

  section .row_box {
    padding-top: 10%;
  }

  .section-item {
    margin: 0 auto 7% auto;
  }
}

/* =============================================
   반응형 시스템 - max-width 기반 통합 (Desktop First)
   컨테이너 기준: 기본 1400px → 화면이 좁아질수록 유동
   Breakpoints: 1400 | 1200 | 992 | 768
   ============================================= */

/* ── 전역 컨테이너 최대 너비 1400px ── */
nav .container,
section .container,
.container {
  max-width: 1536px;
  width: 100%;
}

/* ── ≤ 1400px: 대형 모니터 미세 조정 ── */
@media (max-width: 1400px) {
  #visual .bx-controls-direction a.bx-prev {
    right: auto;
    left: 15px;
  }

  #visual .bx-controls-direction a.bx-next {
    left: auto;
    right: 15px;
  }

  header .opa_bla_bg {
    top: 31%;
    height: 250px;
  }

  header.masthead .intro-text .intro-lead-in {
    font-size: 40px;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 75px;
  }

  #section1,
  #section2 {
    padding: 100px 0 0 0;
  }

  #section3,
  #section4 {
    padding: 200px 0 0 0;
  }

  #section1 .container .business_diagram {
    padding-top: 0;
  }

  header .next-button {
    margin-bottom: 0;
  }

  #section3 .row_box {
    margin-top: 12%;
  }

  #section4 .row_box {
    margin-top: 5%;
  }
}

/* ── ≤ 1200px: 랩탑 / 소형 데스크탑 ── */
@media (max-width: 1200px) {

  nav .container,
  section .container,
  .container {
    max-width: 100%;
    padding-left: 24px;
    padding-right: 24px;
  }

  #gnb>li>ul>li {
    margin-left: 10px;
  }

  #gnb>li>ul>li a {
    font-size: 14px;
  }

  header.masthead .intro-text .intro-lead-in {
    font-size: 36px;
    line-height: 1.2;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 65px;
  }

  #section1 {
    background-size: 100% auto;
  }

  #section1 .col-md-4 {
    width: 167px;
    height: 167px;
  }

  #section1 .col-md-4 .fa-stack {
    font-size: 50px;
  }

  #section1 h4.service-heading {
    font-size: 1rem;
    margin-top: 0;
  }

  #section1 .col-md-4 .text-muted {
    display: none;
  }

  #section1 .b_bg {
    top: 55%;
  }

  #section1 .business1 {
    margin-top: -17%;
    margin-left: -22%;
  }

  #section1 .business2 {
    margin-left: -37%;
  }

  #section1 .business3 {
    margin-top: 17%;
    margin-left: -22%;
  }

  #section1 .business4 {
    margin-top: -17%;
    margin-left: 22%;
  }

  #section1 .business5 {
    margin-left: 37%;
  }

  #section1 .business6 {
    margin-top: 17%;
    margin-left: 22%;
  }

  #section1 .connection {
    width: 59%;
    left: 20.5%;
  }

  #section1 .connection2 {
    transform: rotate(-40deg);
    width: 40.7%;
    left: 29.7%;
  }

  #section1 .connection3 {
    transform: rotate(40deg);
    width: 40.7%;
    left: 29.7%;
  }

  #section3,
  #section4 {
    background-size: 100% auto;
  }

  #section1,
  #section2 {
    padding: 90px 0 0 0;
  }

  #section3,
  #section4 {
    padding: 100px 0 0 0;
  }

  #section2 .row_box,
  #section3 .row_box,
  #section4 .row_box {
    padding-top: 0;
  }

  #section3 .row_box,
  #section4 .row_box {
    margin-top: 5%;
  }

  #section3 h2.section-heading {
    padding-top: 20px;
    font-size: 30px;
  }

  #section2 a.section-link {
    height: 150px;
    overflow: hidden;
  }

  #section2 .section-item {
    margin: 0 auto 10px auto;
  }

  #section2 h4,
  #section3 h4 {
    font-size: 1rem;
  }

  #section2 .section-item .section-caption {
    padding: 10px 20px;
    height: 60px;
  }

  #section2 .store_link {
    top: -45px;
    font-size: 10px;
  }

  section .section-item .section-caption p {
    font-size: 12px;
  }

  .next-button {
    font-size: 15px;
    padding: 7px 10px;
  }

  /* iPad Pro 가로 (슬라이더 이미지 보정) */
  header .slick-slide img {
    min-width: auto;
    width: auto;
    height: 100%;
    min-height: 100vh;
  }

  #section1 {
    background-size: cover;
  }

  #section1 .container .business_diagram {
    padding-top: 5%;
  }

  #section1,
  #section2 {
    padding: 100px 0 0 0;
  }

  #section3,
  #section4 {
    padding: 200px 0 0 0;
  }

  .section-item {
    margin: 0 auto 20px auto;
  }

  #section3 .row_box {
    margin-top: 10%;
  }
}

/* ── ≤ 992px: 태블릿 ── */
@media (max-width: 992px) {

  nav .container,
  section .container,
  .container {
    max-width: 100%;
    padding-left: 16px;
    padding-right: 16px;
  }

  section h2.section-heading {
    font-size: 28px;
    margin-bottom: 10px;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 50px;
  }

  header.masthead .intro-text .intro-lead-in {
    font-size: 28px;
  }

  #section1,
  #section2 {
    padding: 80px 0 0 0;
  }

  #section3,
  #section4 {
    padding: 80px 0 0 0;
  }

  section .row_box {
    padding-top: 10%;
  }

  .section-item {
    margin: 0 auto 7% auto;
  }

  #section2 .section-item .section-caption {
    height: 100px;
    padding: 20px 5px;
  }

  #section2 .section-item .section-caption h4 {
    font-size: 18px;
  }

  #section3 .section-item .section-caption {
    height: 120px;
    padding: 15px 10px;
  }

  #section3 .section-item .section-caption h4 {
    font-size: 18px;
  }

  section .section-item .section-caption p {
    margin-top: 10px;
  }
}

/* ── ≤ 768px: 모바일 ── */
@media (max-width: 768px) {

  nav .container,
  section .container,
  .container {
    max-width: 100%;
    padding-left: 12px;
    padding-right: 12px;
  }

  header.masthead .intro-text .intro-heading {
    font-size: 36px;
    line-height: 1.2;
  }

  header.masthead .intro-text .intro-lead-in {
    font-size: 20px;
  }

  #section1,
  #section2,
  #section3,
  #section4 {
    padding: 60px 0 0 0;
  }

  /* 세로 모드 텍스트 정렬 */
  #section3 h2.section-heading,
  #section4 h2.section-heading {
    padding-top: 0;
  }

  footer .text-right {
    text-align: left !important;
  }
}

/* ── Modern UI Components (GNB, Mega Menu) ── */
/* Tailwind Reset 대응: 폰트 강제 지정 */
body,
button,
input,
select,
textarea,
.nav-link,
.tablinks {
  font-family: 'Pretendard', sans-serif !important;
}

/* Font Awesome 아이콘 폰트 강제 유지 */
.fas,
.fab,
.far,
.fa {
  font-family: "Font Awesome 5 Free" !important;
}

/* ── 레이아웃 보정 ── */
body {
  padding-top: 0 !important;
}

#mainNav {
  background-color: #0a0e1a !important;
  border-bottom: none !important;
  height: 96px !important;
  z-index: 10001 !important;
  transition: all 0.5s ease;
  display: flex !important;
  align-items: center !important;
  padding: 0 40px !important;
}

/* Ensure container in header is consistent across site */
#mainNav .container {
  margin: 0 auto !important;
  padding: 0 !important;
  width: 100% !important;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
}

#mainNav.scrolled,
#mainNav.dropdown-active {
  background: rgba(2, 6, 23, 0.98) !important;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

#mainNav.scrolled {
  height: 70px !important;
}

#mainNav.scrolled~.gnb-dropdown {
  top: 70px !important;
}

/* ── 메가 드롭다운 패널 ── */
.gnb-dropdown {
  display: none;
  position: fixed;
  top: 96px;
  left: 0;
  width: 100%;
  background: rgba(2, 6, 23, 0.98);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.8);
  z-index: 10000;
  padding: 40px 0 35px;
  transition: top 0.5s ease;
}

.gnb-dropdown.open {
  display: block;
  animation: gnbFadeIn 0.2s ease-out;
}

@keyframes gnbFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gnb-dropdown .drop-inner {
  max-width: 1536px;
  margin: 0 auto;
  padding: 0 50px;
  display: flex;
  justify-content: space-between;
}

.gnb-dropdown .drop-col {
  flex: 1;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0 30px;
}

.gnb-dropdown .drop-col:first-child {
  padding-left: 0;
}

.gnb-dropdown .drop-col:last-child {
  border-right: none;
}

.gnb-dropdown .drop-col-title {
  font-family: 'Pretendard', sans-serif;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: #3b82f6;
  text-transform: uppercase;
  margin-bottom: 22px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(59, 130, 246, 0.3);
}

.gnb-dropdown .drop-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.gnb-dropdown .drop-col ul li {
  margin-bottom: 10px;
}

.gnb-dropdown .drop-col ul li a {
  display: block;
  font-family: 'Pretendard', sans-serif;
  font-size: 15px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.65);
  padding: 4px 0;
  transition: all 0.2s;
  text-decoration: none !important;
  letter-spacing: -0.01em;
}

.gnb-dropdown .drop-col ul li a:hover {
  color: #fff;
  padding-left: 10px;
}

#gnb>li>a.gnb-open {
  color: #3b82f6 !important;
  font-weight: 700;
}

/* ── 메인 메뉴 디자인 통일 ── */
#gnb {
  display: flex;
  align-items: stretch;
  height: 100%;
}

#gnb>li {
  padding: 0 40px !important;
  position: relative;
  display: flex;
  align-items: center;
}

#gnb>li>a {
  font-family: 'Pretendard', sans-serif;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #ffffff !important;
  transition: color 0.3s;
  display: flex;
  align-items: center;
  height: 100%;
}

#gnb>li:hover>a,
#gnb>li.active>a {
  color: #3b82f6 !important;
}

#gnb>li:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: #3b82f6;
  /* Blue underline */
  transition: width 0.3s ease;
  z-index: 10;
}

#gnb>li:hover:after,
#gnb>li.active:after {
  width: 100%;
}

/* Mobile Navbar Toggler */
/* ===== Unified Mobile Menu & GNB Design System ===== */

/* Hamburger Toggler Button */
.navbar-toggler {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  position: relative;
  z-index: 10002;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.hamburger-lines {
  width: 22px;
  height: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger-lines .line {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.25s ease,
              width 0.3s ease;
}

.navbar-toggler.active .line1 {
  transform: translateY(7px) rotate(45deg);
}

.navbar-toggler.active .line2 {
  opacity: 0;
  width: 0;
}

.navbar-toggler.active .line3 {
  transform: translateY(-7px) rotate(-45deg);
}

/* Glassmorphic Backdrop Overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(2, 6, 23, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-overlay.open {
  display: block;
  opacity: 1;
}

/* Modern Full-Screen Mobile Menu Overlay */
.mobile-menu {
  opacity: 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 10, 28, 0.98);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding-top: 60px; /* Space for floating navbar */
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  display: none;
}

.mobile-menu.open {
  opacity: 1;
  display: flex;
}

/* Mobile Drawer Header */
.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.02);
}

.mobile-menu-logo {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.mobile-menu-close {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}

.mobile-menu-close:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* Mobile GNB List */
.mobile-menu ul {
  list-style: none;
  padding: 10px 0;
  margin: 0;
}

.mobile-menu ul li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.mobile-menu ul li a.gnb-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1.2rem;
  font-weight: 500; /* Flat, sleek font styling */
  color: rgba(255, 255, 255, 0.85) !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none !important;
  transition: all 0.3s ease;
  cursor: pointer;
  flex-direction: row;
}

.mobile-menu ul li a.gnb-trigger:hover,
.mobile-menu ul li a.gnb-trigger.gnb-open {
  color: #3b82f6 !important;
  padding-left: 28px;
  background: rgba(59, 130, 246, 0.04);
}

/* Trendy Minimalist Micro-Chevron SVG Icon */
.menu-arrow {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 3px;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.7;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s, color 0.3s;
  transform: rotate(90deg);
}

.gnb-trigger.gnb-open .menu-arrow {
  transform: rotate(270deg);
  opacity: 1;
  color: #3b82f6;
}

/* Responsive GNB Layout Controls */
@media (max-width: 991px) {
  #mainNav {
    height: 70px !important; /* Standardize mobile header height */
    padding: 0 20px !important;
    z-index: 10002 !important; /* Float above mobile drawer */
    background: rgba(2, 6, 23, 0.98) !important; /* Fixed dark background */
    backdrop-filter: blur(10px) !important;
    -webkit-backdrop-filter: blur(10px) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3) !important;
  }

  #mainNav .navbar-brand:active,
  #mainNav .navbar-brand:focus,
  #mainNav .navbar-toggler:active,
  #mainNav .navbar-toggler:focus,
  #mainNav .logo-link:active,
  #mainNav .logo-link:focus,
  .logo-link:active,
  .logo-link:focus {
    transform: none !important;
    scale: 1 !important;
    box-shadow: none !important;
    outline: none !important;
  }
  
  #mainNav .container {
    padding: 0 !important;
    max-width: 100% !important;
  }

  #mainNav.scrolled {
    background: rgba(2, 6, 23, 0.98) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  }

  #mainNav .navbar-toggler,
  .navbar-toggler {
    display: flex !important;
    background: transparent !important;
    background-color: transparent !important;
    border: none !important;
    padding: 8px !important;
    cursor: pointer !important;
    position: relative !important;
    z-index: 10002 !important;
    width: 40px !important;
    height: 40px !important;
    align-items: center !important;
    justify-content: center !important;
    right: auto !important; /* Overwrite desktop styles */
    outline: none !important;
    box-shadow: none !important;
  }

  #mainNav .navbar-toggler:focus,
  .navbar-toggler:focus,
  #mainNav .navbar-toggler:active,
  .navbar-toggler:active {
    outline: none !important;
    box-shadow: none !important;
    background: transparent !important;
    border: none !important;
  }

  #mainNav .hidden.md\:flex {
    display: none !important;
  }

  #mainNav.menu-open {
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
  }

  /* Flat Accordion Submenu Layout on Mobile */
   .gnb-dropdown {
        position: static !important;
        display: none;
        box-shadow: none !important;
        padding: 6px 0 !important;
        animation: none !important;
        backdrop-filter: blur(5px) !important;
        -webkit-backdrop-filter: blur(5px) !important;
    }

  .gnb-dropdown.open {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  .gnb-dropdown .drop-inner {
    display: flex;
    flex-direction: column;
    padding: 0 !important;
  }

  .gnb-dropdown .drop-col {
    display: none;
    border: none !important;
    padding: 0 !important;
    opacity: 1 !important; /* Force full opacity on mobile */
    transform: none !important; /* Reset desktop transform */
    background: transparent !important;
  }

  .gnb-dropdown .drop-col.mobile-show {
    display: block;
    opacity: 1 !important;
    transform: none !important;
  }

  .gnb-dropdown .drop-col-title {
    display: none !important; /* Hide redundant bold column title */
  }

  .gnb-dropdown .drop-col ul {
    padding: 4px 0 !important;
    margin: 0 !important;
    border-left: none !important;
    background: transparent !important;
    text-align: left !important;
  }

  .gnb-dropdown .drop-col ul li {
    border-bottom: none !important;
    background: transparent !important;
  }

  .gnb-dropdown .drop-col ul li a {
      font-size: 1rem !important;
      font-weight: 400 !important;
      padding: 12px 32px 12px 12px;
      color: rgba(255, 255, 255, 0.5) !important; /* Sleek, low visual noise default text */
      opacity: 1 !important; /* Ensure fully visible text */
      letter-spacing: 0.05em !important;
      text-transform: none !important;
      display: block;
      position: relative !important;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
      background: transparent !important;
      text-align: center;
  }

  .gnb-dropdown .drop-col ul li a:hover {
    color: #ffffff !important;
  }
}