/* 속성 선언 순서
display/position/width/height/margin/padding/border/background/font/color/animation */

/* Font */
@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-Black.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-ExtraBold.otf') format('opentype');
    font-weight: 900;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-Bold.otf') format('opentype');
    font-weight: 800;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-SemiBold.otf') format('opentype');
    font-weight: 600;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-Medium.otf') format('opentype');
    font-weight: 500;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-Regular.otf') format('opentype');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-Light.otf') format('opentype');
    font-weight: 300;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-ExtraLight.otf') format('opentype');
    font-weight: 200;
    font-style: normal;
}

@font-face {
    font-family: 'Pretendard';
    src: url('../css/font/Pretendard-Thin.otf') format('opentype');
    font-weight: 100;
    font-style: normal;
}

@font-face {
    font-family: 'Yangjin';
    src: url('https://cdn.jsdelivr.net/gh/supernovice-lab/font@0.9/yangjin.woff') format('woff');
    font-weight: normal;
    font-display: swap;
}

/* Common */
html{ scroll-behavior: smooth; }
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Pretendard'; }
body { user-select: none; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; 
    /* background-image: url('../img/bg.jpg');  */
    background-color: #f5f5f5;
}
a { text-decoration: none; color: #444; }
ul,
li { list-style: none; }
select:focus,
input:focus,
button:focus { outline: none; }

.inner { width: 1200px; margin: 0 auto; }
.logo { font-size: 30px; font-weight: bold; color: #444; font-family: 'Yangjin'; text-decoration: none; line-height: 80px; }
.normal { display: inline-block; padding: 0 20px; font-family: 'Pretendard'; }
.responsive_br,
br.mobile_br { display: none; }

.line { width: 1200px; height: 1px; margin: 10px auto; background-color: #444; }

/* Header */
#header { position: fixed; top: 0; left: 0; width: calc(100vw - (100vw - 100%)); height: 80px; border-bottom: 1px solid #9ea0bb8d; background-color :#fff; z-index: 40; }
#header .inner { display: flex; flex-direction: row; justify-content: space-between; }
#header .logo { color: #000; }
.gnb_wrap { width: calc(100% - 410px); margin-left: 30px; }

#apply_banner { height: fit-content; border-bottom: none; margin-top: 40px; }
#apply_banner .inner_apply { max-width:760px; margin: 0 auto; }
#apply_banner .inner_apply img { display: block; width: 100%; }


#gnb { display: flex; flex-direction: row; justify-content: right; list-style: none; text-align: center; height: 80px; z-index: 10; }
#gnb>li { border: none; margin: 0 -2px; }
#gnb>li>a { line-height: 80px; }
#gnb>li { line-height: 80px; padding: 0 16px; }
#gnb>li>a {  color: #444; }

#gnb .mobile_menu { display: none; }

#header:hover .logo,
#header.on .logo,
#header:hover #gnb>li>a,
#header.on #gnb>li>a,
#header:hover #right_top_menu>li>a,
#header.on #right_top_menu>li>a {  color: #000; }

.logo { display: flex; flex-direction: row; justify-content: left; }
.logo>img { display: block; height: 30px; margin-top: 23px; margin-right: 4px; }

.sub_menu_pannel { 
    display: none; position: fixed; left: 0; top: 80px; 
    flex-direction: row; justify-content: space-between; flex-wrap: wrap; 
    width: 100vw; height: 300px; background-color: #fff; border-bottom: 1px solid #373d7b4c; opacity: 0; transition: 0.3s; }
.sub_menu_pannel.on { display: flex; opacity: 1; transition: 0.3s; }
.sub_menu_title { 
    display: block; width: 400px; border-right: 1px solid #373d7b4c; 
    text-align: left; font-size: 26px; color: #373d7b; font-weight: 800; 
    padding: 20px 20px 20px 70px; }
.gnb_sub_menu { display: flex; flex-direction: column; flex-wrap: wrap; align-items: start; width: calc(100% - 400px); height: 300px; text-align: left; padding: 20px 70px 20px 40px; }
.gnb_sub_menu li { display: block; width: 150px; padding: 0 !important; text-align: left; }
.gnb_sub_menu>li { line-height: 50px; padding: 0 16px; }
.gnb_sub_menu li a { color: #444; }
.gnb_sub_menu li:hover a { color:#373d7b; font-weight: 600; }

.gnb_toggle_btn_wrap { display: none; width: 35px; height: 28px; margin: 26px 0; border-radius: 2px; overflow: hidden; cursor: pointer; }
.toggle_btn_bar { width: 35px; height: 3px; background-color: #444; border-radius: 5px; transition: 0.3s; transform-origin: 1px 1px;}
.gnb_toggle_btn_wrap .toggle_btn_bar:nth-of-type(2) { margin: 9px 0;}

.gnb_toggle_btn_wrap.on .toggle_btn_bar:nth-of-type(2) { opacity: 0; }
.gnb_toggle_btn_wrap.on .toggle_btn_bar:nth-of-type(1) { width: 42px; transform: rotate(36deg); }
.gnb_toggle_btn_wrap.on .toggle_btn_bar:nth-of-type(3) { width: 42px; transform: rotate(-36deg); }

#right_top_menu { display: flex; flex-direction: row; justify-content: left; height: 80px; }
#right_top_menu>li>a { line-height: 80px; }
#right_top_menu>li { line-height: 80px; padding: 0 16px; list-style: none; }

/*section - common*/
.main_con { width: 100%; padding: 80px 0 100px;}
.con { width: 100%; height: 400px; }
.con .inner { height: 400px; padding: 20px 0; }
.main_con_title { font-size: 40px; font-weight: 800; color: #3c3e41; }
.main_con.on .main_con_title { opacity: 1; }
.main_con_sub_text { font-size: 28px; color: #666; font-weight: 200; }
.main_con.on .main_con_sub_text { opacity: 1; transition-delay: 0.2s; }

.con_inner.inner { width: 1120px; padding-top: 60px; padding-bottom: 60px; }
.sec_text_wrap .mid_text { display: block; font-weight: 700; font-size: 30px; line-height: 40px; margin: 20px 0; color: #000; }
.sec_text { display: block; font-weight: 300; font-size: 20px; line-height: 30px; margin: 30px 0; color: #777; word-break: keep-all; }
.right.sec_bold_text { display: block; width: 100%; font-weight: 700; font-size: 20px; color: #444; }
.sec_nav { display: block; font-size: 16px; color: #9b9ba8; padding: 0 6px 10px; line-height: 20px; font-weight: 300; margin-top: 40px; }
.sec_nav>i { font-size: 12px; margin: 0 4px; transform: translateY(-1px);}
.sec_title_wrap { padding-bottom: 20px; }
.sec_title_wrap.detail { border-bottom: none; }
.sec_title_wrap.bold_border { border-bottom: 4px solid #3f4164; }
.c2 { color: #666fa0; }
.c3 { color: #3f4b8f; }

/* sec1 - visual */
#visual1 { position: relative; width: 100%; height: fit-content; overflow: hidden; background-color: #000; margin-top: 80px; overflow: hidden; }
#visual1 .inner { position: relative; height: fit-content; padding: 180px 0 80px; }
#visual1 .inner .title { font-size: 38pt; font-weight: 900; color: #fff; }
#visual1 .inner .title .small { font-size: 20pt; color: #d6d6d6; }
#visual1 .inner .title .small i { padding: 0 6px; color: #9e9e9e; font-size: 14pt; transform: translateY(-2px); }
#visual1 .inner .sml_text { font-size: 16pt; color: #fff; font-weight: 200; }
#visual1 .inner .sml_text .bold { font-weight: 600; }
#visual1 .inner .btn_wrap { display: flex; flex-direction: row; justify-content: left; margin-top: 20px; }
.main_con_show_more_btn { display: block; width: fit-content; padding: 0 30px; border: 1px solid #444; color: #444; margin-right: 10px; transition: 0.3s; line-height: 40px;  }
.main_con_show_more_btn:hover { background-color: #000; color: #fff; }

#visual1 .main_con_show_more_btn { border-color: #fff; color: #fff; }
#visual1 .dec1 { position: absolute; right: 0; bottom: 0; height: 100%; }

.visual_btn_wrap { display: flex; flex-direction: row; justify-content: space-between; width: 100%; height: fit-content; margin: 100px 0 60px; }
.visual_btn { position: relative; display: flex; flex-direction: column; justify-content: center; width: calc(33.333333% - 40px); height: 140px; text-align: center; border: 3px solid #fff; color: #444; 
    font-size: 16pt; transform: rotate(0); overflow: hidden; transition: 0.3s; font-weight: 900; background-color: #fff; }

.visual_btn i { position: absolute; right: 40px; top: 50%; transform: translateY(-50%); }
.visual_btn::before {       
    content: '';
    position: absolute;
    top: 0;
    left: -50px;
    width: 150%;
    height: 100%;
    background: #000;
    z-index: -1;
    -webkit-transform: rotate3d(0, 0, 1, -45deg) translate3d(0, -3em, 0);
    transform: rotate3d(0, 0, 1, -45deg) translate3d(0, -3em, 0);
    -webkit-transform-origin: 0% 100%;
    transform-origin: 0% 100%;
    -webkit-transition: -webkit-transform 0.3s, opacity 0.3s, background-color 0.3s;
    transition: transform 0.3s, opacity 0.3s, background-color 0.3s;
}

.visual_btn:hover { 
    color: #fff;
}

.visual_btn:hover::before {
  opacity: 1;
  left: 0;
  background-color: #000;
  -webkit-transform: rotate3d(0, 0, 1, 0deg);
  transform: rotate3d(0, 0, 1, 0deg);
  -webkit-transition-timing-function: cubic-bezier(0.2, 1, 0.3, 1);
  transition-timing-function: cubic-bezier(0.2, 1, 0.3, 1);
}

.visual_btn:hover .visual_btn::before,
.visual_btn:hover .visual_btn::after { transform: scaleX(1); }
.visual_btn:hover .visual_btn::before { transform-origin: right; }
.visual_btn:hover .visual_btn::after { transform-origin: left; }


section .inner { padding: 80px 0; height: fit-content; }
.section_title { position: relative; font-size: 22pt; font-weight: 900; color: #444; line-height: 24pt; margin-left: 26px; }
.section_title::before { position: absolute; top: 8px; left: -26px; width: 16px; height: 16px; border-radius: 100%; background-color: #373d7b; content: ''; }

.program_btn { display: block; background-color: #000; color: #fff; text-align: center; padding: 60px 0; font-size: 20pt; font-weight: bold; }


.section6 { background-color: #1a1c38; color: #fff; text-align: center; }
.section6 .section_title { position: relative; font-size: 22pt; font-weight: 900; color: #fff; line-height: 24pt; margin-left: 0; }
.section6 .section_title::before { display: none; }
.section6 .main_con_show_more_btn { border-color: #fff; color: #fff; margin: 30px auto 0; }
.section6 .main_con_show_more_btn:hover { background-color: #fff; color: #000; }

/* 4열 그리드 */
.section4 {
    margin-top: -100px;
}
.section4 .guide_box .yt_wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 4개씩 한 줄 */
  gap: 20px; /* 카드 간격 */
}

.section4 .yt_box4 {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section4 .yt_title {
  font-weight: 600;
}

/* 16:9 비율 유지 */
.section4 .yt {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 8px;
}
.section4 .yt iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* 반응형 */
@media (max-width: 1200px) {
  .section4 .guide_box .yt_wrap {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 900px) {
  .section4 .guide_box .yt_wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 580px) {
  .section4 .guide_box .yt_wrap {
    grid-template-columns: 1fr;
  }
}


.guide_box { width: 100%; height: fit-content; padding: 40px; box-shadow: 0 10px 25px rgba(0, 0, 0, .08); border-radius: 10px; background-color: #ffffffa9; margin-top: 30px; }
.guide_box .box_title { font-size: 16pt; font-weight: bold; color: #444; }

.yt_wrap { width: 100%; display: flex; flex-direction: row; justify-content: left; margin-top: 40px; }
.yt_box { width: calc(33% - 10px); margin-right: 15px; padding: 20px; background-color: #f3f2f2; }
.yt_box4 { margin-top: 20px; }
.yt_title { font-size: 14pt; font-weight: 600; margin-bottom: 20px; }
.yt_title4 { font-size: 14pt; font-weight: 600; }
.yt_box .yt { position: relative; width: 100%; height: fit-content;}
.yt_box .yt iframe { width: 100%; height: 10vw; }
.yt_box4 .yt { position: relative; width: 100%; height: fit-content;}
.yt_box4 .yt iframe { width: 100%;  }
.yt_title .num { font-family: 'Yangjin'; padding-right: 6px; color: #1e2253; }

.next { width: 100%; text-align: center; font-size: 20pt; color: #1e2253; margin-top: 20px; }

.section3 { min-height: 650px; }
.archive_wrap { position: relative; width: 100%; height: fit-content;  margin-top: 40px; margin-bottom: 100px; }
.archive_box { position: absolute; width: 100%; height: fit-content;  } 

.archive_contents_box { width: 100%; height: fit-content; background-color: #fff; padding: 20px; box-shadow: 0 10px 25px rgba(0, 0, 0, .08); border-radius: 10px; }
.archive_contents { display: flex; flex-direction: row; justify-content: space-between; width: 100%; line-height: 40px; margin-bottom: 20px; padding: 10px 20px; border: 1px solid #e7eaf3; border-radius: 8px; }
.archive_contents:last-of-type { margin-bottom: 0; }
.file_name { font-size: 12pt; font-weight: 600; }
.file_type_size { display: inline-block; font-size: 8pt; color: #666; padding-left: 10px; }
.archive_box .main_con_show_more_btn { border-radius: 6px; border-color: #e7eaf3; }


.archive_box.on .archive_title_box { background-color: #373d7b; color: #fff; }
.archive_box.on .archive_contents_box { display: block; }

.line.last { margin-bottom: 100px; }

.con { margin-top: 80px; }
.con .inner { position: relative; height: calc(100vh - 80px); min-height: 600px; }
.con .wrap { position: absolute; left: 50%; top: 45%; transform: translate(-50%, -50%); }
.con .card { position: absolute; left: 50%; top: 45%; transform: translate(-50%, -50%); }

.terms { margin-top: 20px; color: #949494; font-weight: 200; }
.terms .term_title { font-weight: 600; color: #444; }
#agree { width: fit-content; margin-right: 10px; transform: translateY(2px); }
.terms label { color: #444; }

.pro_title_wrap { display: flex; flex-direction: row; justify-content: left; width: 100%; border-bottom: 1px solid #9ea0bb8d; }
.pro_title_wrap .icon { display: flex; flex-direction: column; justify-content: center; margin-right: 30px; }
.pro_title_wrap .icon img { display: block; width: 100%; width: 80px; height: 80px; border: 1px solid #b4b4b4; margin-top: 20px; border-radius: 4px; }


.pro_img_box { width: 100%; margin: 20px 0; }
.pro_img_box img { width: 100%; }
.pro_text_box { width: 100%; margin-bottom: 20px; }
.pro_text_box_title,
.pro_text_box_sub_text { padding: 0 20px; line-height: 40px; }
.pro_text_box_sub_text ul { margin: 0; }
.pro_text_box_title { background-color: #f0f0f0; color: #000; font-weight: 500; }

.link_section .inner { text-align: center; }
.link_section .inner a { color: #727272; }
.link_section .inner a i { padding-left: 10px; }

/* floating menu */ 
.floating_menu_wrap { position: fixed; bottom: 20px; right: 20px; z-index: 30; }
.floating_menu { 
    display: block; width: 60px; height: 60px; 
    border-radius: 100%; border: 1px solid #eeeeee3a; 
    margin-top: 10px; background-color: #fff; 
    box-shadow: 0 4px 8px 0 rgba(46, 44, 43, 0.2); 
    text-align: center; line-height: 60px; font-size: 26px; color: #443f39; cursor: pointer; }

/* footer */
#footer { width: calc(100vw - (100vw - 100%)); height: 240px; background-color: #000; color: #fff; }
#footer .inner { height: 220px; padding: 60px 0 30px;}
#footer .logo { display: inline-block; line-height: 30px; margin-bottom: 10px; margin-top:-10px; color: #fff; }
#footer_menu li { display: inline-block; line-height: 30px; padding: 0 8px 0 0; color: #fff; }
#footer_menu li a { color: #fff; }
.sml_text { display: inline-block; font-size: 13px; margin-top: 10px; }

/* sitemap */
.site_map_wrap { width: 100%; padding: 30px 0; }
.site_map_box { width: 100%; display: flex; flex-direction: row; justify-content: space-between; border-bottom: 1px solid #eee; }
.site_map_box:last-of-type { border-bottom: none; }
.site_map_box_title { width: 240px; padding: 20px 50px; font-size: 14pt; font-weight: 900; color: #444; line-height: 60px; }
.site_map_link_box { width: calc(100% - 240px); }
.site_map_link>li { display: inline-block; width: 100px; line-height: 100px; }
.site_map_link>li.long { width: fit-content; }
.site_map_link>li>a { color: #444; }

@media screen and (max-width:1300px) {
    .inner { width: calc(100vw - 100px); }
    .line { width: calc(100vw - 100px); }
    .responsive_br { display: inline; }
    .responsive_br_none { display: none; }
    .gnb_wrap { display: none; position: fixed; right: 0; top: 80px; width: 300px; height: calc(100vh - 80px) !important; padding: 30px 0; background-color: #eaedf5; overflow-y: auto; overflow-x: hidden; margin: 0; }
    #gnb { display: block; } 
    #gnb>li { padding: 0; line-height: 20px; }

    .gnb_toggle_btn_wrap { display: block; }

    .con_inner.inner { width: calc(100vw - 150px); }
    .sec_nav { padding: 0 2px; }
    .sec2 .img_wrap { width: calc(100vw - 150px); }
    .sec5 .partner_img { width: calc(100vw - 150px); }
}

@media screen and (max-width:1100px) {
    .visual_wrap .big_text { font-size: 44px; }
    .visual_wrap .mid_text { font-size: 28px; }
    .slide_bg img { display: inline-block; height: 100%; width: auto; }

    .main_con_title { font-size: 36px; }
    .main_con_sub_text { font-size: 28px; }

    /*section2 - news room*/
    .news_room_wrap { display: block; text-align: center; }
    .news_room_box { display: inline-block; }

    /*section3 - about*/
    .con .inner .box_wrap { width: 100%; display: block; text-align: center; }
    .sec3.on .box_wrap:nth-of-type(1) { opacity: 1; transition-delay: 0.5s; }
    .sec3.on .box_wrap:nth-of-type(2) { opacity: 1; transition-delay: 0.8s; }
    .sec3.on .box_wrap:nth-of-type(3) { opacity: 1; transition-delay: 0.11s; }

    .box { display: inline-block; height: 360px; padding: 30px; }
    .img_box.box,
    .txt_box.box { width: 600px; }
    .second_box .img_box:nth-of-type(1) { display: inline-block; }
    .second_box .box:nth-of-type(3) { display: none !important; }

    .product_wrap.on .product_text { padding: 20px; }
    .product_title { font-size: 30px; }

    .show_more_btn { margin: 0 auto; }

    .organization_wrap { width: 100%; }
    .organization_depth_wrap.depth2::before { width: calc(100% - 166px); } 
    .organization_depth_wrap.depth3::before { width: calc(100% - 162px); }
    
    .management_box_wrap { flex-wrap: wrap; }
    .management_box { width: 30%; margin-bottom: 20px; }
    .management_img_box { width: 120px; height: 120px; border-radius: 100%; line-height: 120px; color: #fff; font-size: 32px; margin: 0 auto 20px; }
    .management_img_box::after { left: 8px; top: 8px; width: 90px; height: 90px; border: 8px solid #ffffff3b; }

    .partner_img img { width: 100%; }
    .pro_title_wrap .icon { margin-right: 20px; }
    .pro_title_wrap .icon img { width: 60px; height: 60px; }
}

@media screen and (max-width:800px) {
    .inner { width: calc(100vw - 80px); }
    .logo { font-size: 24px; }
    #visual1 .inner .title { font-size: 30pt; }

    .visual_btn_wrap { display: block; }
    .visual_btn { width: 100%;  margin-bottom: 20px; }

    .yt_wrap { display: block; }
    .yt_box { width: 100%; margin-right: 0; margin-bottom: 30px; }
    .yt_box .yt iframe { height: 200px; }

    .right_top_menu_wrap { width: calc(100vw - 240px); }

    .visual_wrap .big_text { font-size: 40px; }
    .visual_wrap .mid_text { font-size: 24px; }

    .con_inner.inner { width: calc(100vw - 80px); }
    .sec_text_wrap .mid_text { font-size: 24px; line-height: 30px; }

    .main_con_title { font-size: 32px; }
    .main_con_sub_text { font-size: 22px; }

    .btn_menu_wrap { width: 80px; height: 140px; }
    .btn_menu { width: 80px; height: 80px; line-height: 80px; font-size: 24px; }

    /*section2 - news room*/
    .news_room_wrap { display: block; text-align: center; }
    .news_room_box { display: inline-block; width: 100%; }
    .news_room_box:nth-of-type(1) { margin-bottom: 40px; }

    /*section3 - about*/
    .con .inner .box_wrap { width: 100%; display: block; text-align: center; }
    .sec3.on .box_wrap:nth-of-type(1) { opacity: 1; transition-delay: 0.5s; }
    .sec3.on .box_wrap:nth-of-type(2) { opacity: 1; transition-delay: 0.8s; }
    .sec3.on .box_wrap:nth-of-type(3) { opacity: 1; transition-delay: 0.11s; }
    .txt_box .big_text { font-size: 30px; }

    .box { display: inline-block; height: 360px; padding: 30px; }
    .img_box.box,
    .txt_box.box { width: 100% }
    .second_box .img_box:nth-of-type(1) { display: inline-block; }
    .second_box .box:nth-of-type(3) { display: none !important; }

    /*section4 - products*/
    .sec4 .inner { height: fit-content !important; }
    .products_con { display: block; }
    .product_wrap { 
        display: flex; flex-direction: row; justify-content: space-between;
        width: 100%; height: 400px; overflow: hidden; 
        margin: 50px 0; }
    .product_wrap.on { width: 100%; height: 400px; }
    .product_img { width: 50vw; height: 500px; text-align: center; overflow: hidden; }
    .product_img img { display: inline-block; margin: 0 auto; opacity: 1; transform: translateY(0); }
    .product_img.on img,
    .product_img:hover img,
    .product_wrap:hover img { opacity: 1; }
    .product_text { padding: 40px; }
    .product_title { font-size: 26px; }
    .product_wrap.on .product_text {  padding: 40px; }
    .product_dec { display: none; }
    .organization_wrap { width: 700px !important; zoom: 0.8; }
    .sec5 .partner_img { width: calc(100vw - 80px); }
    .sec2 .img_wrap { width: calc(100vw - 80px); }
    .management_bottom_box_wrap { flex-wrap: wrap; justify-content: center; }
    .location_table { display: none; }
    .location_table.mobile { display: block; }

    .main_con_sub_text.par { font-size: 18px; }
}
@media (min-width: 760px) {
    .grid-2 { grid-template-columns: 1fr 1fr; }
}
@media screen and (max-width: 760px) {
    #apply_banner { margin-top: 0px; }
    .wrap.term { margin: 0 auto; }
}
@media screen and (max-width:600px) {
    .inner { width: calc(100vw - 40px); }
    .con_inner.inner { width: calc(100vw - 40px); padding: 20px 0; }
    .logo { font-size: 22px; line-height: 60px; }
    .logo>img { margin-top: 15px; }

    #header { height: 60px; }
    .gnb_toggle_btn_wrap { height: 28px; margin: 16px 0; }
    .gnb_wrap { top: 60px; height: calc(100vh - 60px) !important; }

    #gnb .mobile_menu { display: inline-block; width: 100%; line-height: 40px; text-align: center; cursor: pointer; }
    #gnb .mobile_menu:hover { background-color: #ffffff75; }
    #gnb .mobile_menu>a { display: inline-block; line-height: 40px; color: #444 !important; }
    .right_top_menu_wrap { display: none; }

    .sub_menu_pannel { width: 100%; }
    .sub_menu_title { font-size: 16px; font-weight: 500; }

    .visual_wrap .big_text { font-size: 30px; }
    .visual_wrap .mid_text { font-size: 20px; }

    .main_con { width: 100%; padding: 60px 0;}
    .main_con_title { font-size: 30px; }
    .main_con_sub_text { font-size: 20px; }

    .swiper-button-prev { left: 10px !important; }
    .swiper-button-next { right: 10px !important; }
    .swiper-scrollbar-horizontal { width: calc(100vw - 80px) !important; }

    .btn_menu_con { flex-wrap: wrap; }

    .news_room_title { font-size: 20px; }

    .txt_box .big_text { font-size: 24px; }
    .txt_box .mid_text { font-size: 20px; }

    .product_wrap { display: block; height: 500px; }
    .product_wrap.on { height: 500px; }
    .product_img { width: 100%; height: 300px; }
    .product_img img { width: auto; height: 100%; }
    .product_title { font-size: 20px; line-height: 50px; }
    .product_sub_text { font-size: 16px; }

    #footer,
    #footer .inner { height: 240px; }
    
    .floating_menu { width: 50px; height: 50px; line-height: 50px; }

    .sec_text { font-size: 16px; }
    .company_tracking_table { display: none; }
    .company_tracking_table.mobile { display: block; }
    .organization_wrap { width: 700px !important; zoom: 0.6; }
    .sys_box_wrap { flex-wrap: wrap; }
    .sys_box { width: 100%; padding: 40px; 
    /* border: 1px solid #718ca98d;  */
    text-align: center; }
    .management_box { margin: 0 18px 20px 18px; }
    .location_table .table_head { width: 100px !important; padding: 0; }

    .site_map_box_title { width: 140px; padding: 20px 30px; font-size: 14pt; font-weight: 900; color: #444; line-height: 20px; }
    .site_map_link_box { width: calc(100% - 140px); }
    .site_map_link>li { width: 49%; line-height: 60px; }
}

@media screen and (max-width:400px) {
    br.mobile_br { display: inline; }

    .sec3 .txt_box { padding: 0; }
    .sec3 .mid_text { font-size: 16px; }

    .product_img img { transform: translateY(0); }

    #footer,
    #footer .inner { height: 280px; }
    .organization_wrap { width: 700px !important; zoom: 0.5; }
}