@charset "utf-8";
:root {
  --blue: #004a99;
}
html,
body {
  margin: 0;
}
body {
  font-family: 'Noto Sans KR', 'Malgun Gothic', 돋움, 굴림, 'Open Sans';
  overflow-x: hidden;
}

::-webkit-scrollbar-thumb {
  background-color: #2da7e0ac;
  border-radius: 10px;
}

h1,
h2,
h3,
h5,
p,
ul {
  padding: 0;
  margin: 0;
}
h2 {
  font-size: 24px;
}
h3 {
  font-size: 14px;
}
ul {
  list-style: none;
}
a {
  display: block;
  color: inherit;
  text-decoration: none;
}
img {
  vertical-align: top;
}
.ghostbtn {
  padding: 3px 5px 2px 5px;
  border: #555 solid 1px;
  margin: 0;
  width: 60px;
  height: 20px;
  line-height: 20px;
  font-size: 10px;
  color: #555;
}
.ghostbtn:hover {
  background-color: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

header {
  width: 100%;
  height: 51px;
  display: flex;
  background-color: #fff;
  padding: 10px;
  position: sticky;
  top: 0;
  box-sizing: border-box;
  z-index: 9999;
  box-shadow: 0 1px 5px 1px rgb(0 0 0 / 20%);
}
header .logo {
  width: 200px;
  height: 31px;
  text-indent: -9999px;
  background: url(./images2/logo.png) no-repeat 0 / contain;
}
header .toggle {
  margin-left: auto;
  width: 42px;
  height: 32px;
  text-align: center;
}
header .toggle span {
  width: 22px;
  line-height: 32px;
}

header .gnb {
  display: none;
  width: 100%;
  position: absolute;
  left: 0;
  top: 100%;
  background-color: #fff;
}
header .gnb.active {
  display: block;
}
header .gnb > li > a {
  padding: 10px 15px;
  color: #555;
  font-size: 18px;
  font-weight: bold;
}

header .gnb > li > .sub_menu {
  display: none;
}

.gnb > li:hover > .sub_menu,
.gnb > li.open > .sub_menu {
  display: block;
}

header .gnb > li > .sub_menu > li > a {
  padding: 8px 20px;
  color: #bdbcbc;
  font-size: 16px;
}
header .gnb > li > .sub_menu > li:hover > a {
  background-color: var(--blue);
  color: #fff;
}
:is(header) .ft_icon1,
.ft_icon2,
.top_btn {
  display: none;
}

main .slideimg {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  text-align: center;
  color: #fff;
  text-shadow: 0 1px 2px rgb(0 0 0 / 20%);
  position: relative;
}
main .slideimg video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
  object-fit: cover;
}

main .slideimg h2 {
  font-size: 2.6rem;
  letter-spacing: 3px;
  font-weight: 500;
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  line-height: 1.2;
}
main .slideimg p {
  margin-top: 10px;
  width: 100%;
  font-size: 13px;
  line-height: 1.6;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

main .art1 {
  width: 100%;
  height: 50vw;
  padding: 30px 0 40px 0;
  background-color: #f2f2f2;
  text-align: center;
}
main .art1 p,
main .art5 p {
  padding: 5px 0 15px;
  font-size: 12px;
  color: #888;
}
main .art1 .contentBox {
  margin: 0 auto;
  display: flex;
  justify-content: center;
}
main .art1 .contentBox .ms {
  width: 29vw;
  padding: 10px;
}
main .art1 .contentBox .ms img {
  width: 100%;
  height: 22vw;
  background-color: #fff;
}
main .art1 .contentBox .ms .txt {
  height: 13.5vw;
  padding: 10px;
  box-sizing: border-box;
  background-color: #fff;
  text-align: center;
}
:is(main .art1 .contentBox .ms .txt) h3,
h5 {
  font-weight: normal;
}
main .art1 .contentBox .ms .txt h5 {
  display: none;
  color: #888;
}
main .art1 .contentBox .ms .txt .ghostbtn {
  margin: 5px auto;
}

main .art2 {
  margin-top: 40px;
}
main .art2 .imgbox,
main .art3 .imgbox1 {
  margin: 60px auto 0;
  width: 50vw;
  height: 56.5vw;
}
main .art2 .imgbox {
  background: url(./images2/monitor1.png) no-repeat 0 0 / contain;
}
main .art3 .imgbox2 {
  width: 48vw;
  height: 48vw;
  background: url(./images2/vppc.jpg) no-repeat 50% / cover;
  margin: 2vw;
}

main .art2.ppa .imgbox {
  background: url(./images2/ppa.jpg) no-repeat 0 0 / contain;
}
main .art3.oxm .imgbox2 {
  background: url(./images2/oxm.jpg) no-repeat 50% / cover;
}
main .art2.ai .imgbox {
  background: url(./images2/ai.jpg) no-repeat 0 0 / contain;
}

main .art2 .txt,
main .art3 .txt {
  margin: 30px auto;
  width: 90vw;
}
main .art2 .txt h2,
main .art3 .txt h2 {
  font-size: 30px;
}
main .art2 .txt p strong,
main .art3 .txt p strong {
  font-size: 14px;
  color: #333;
}
main .art2 .txt p,
main .art3 .txt p {
  margin: 20px 0;
  font-size: 13px;
  color: #888;
}
main .art2 .txt .ghostbtn,
main .art3 .txt .ghostbtn,
main .art4 .layer .ghostbtn {
  padding: 6px 15px 5px;
  font-size: 11px;
  width: 70px;
  text-align: center;
}

main .art4 {
  padding: 50px 0;
  width: 100%;
  height: 125px;
  background: url(./images2/sun_2.jpg) no-repeat fixed 0 50% / cover;
  text-align: center;
  color: #fff;
}
main .art4 .layer h2 {
  font-size: 22px;
  font-weight: normal;
}
main .art4 .layer p {
  font-size: 12px;
  margin: 20px 0;
}
main .art4 .layer .ghostbtn {
  margin: 0 auto;
  border-color: #fff;
  color: #fff;
}
main .art4 .layer .ghostbtn:hover {
  border-color: var(--blue);
  background-color: var(--blue);
}

main .art5 {
  margin: 50px auto 10px;
  text-align: center;
}
main .art5 .contentBox {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin: 10px auto;
}
main .art5 .contentBox .key {
  width: 46vw;
  height: 50vw;
  padding: 10px;
}
main .art5 .contentBox .key img {
  width: 100%;
  height: 26vw;
}
main .art5 .contentBox .key .txt {
  text-align: left;
  padding: 10px;
  border: #ddd 1px solid;
}
main .art5 .contentBox .key .txt h3 {
  font-weight: normal;
  font-size: 14px;
  color: #333;
}
main .art5 .contentBox .key .txt h5 {
  font-weight: normal;
  font-size: 11px;
  margin-top: 5px;
  color: #777;
}

main .art6 {
  background-color: var(--blue);
  padding: 10px;
}
main .art6 .contentBox .view {
  padding: 10px 15px 10px 15px;
  border-bottom: #fff solid 1px;
  color: #fff;
  display: grid;
  grid-template-columns: 1fr 3.5fr;
}
main .art6 .contentBox .view:last-child {
  border-bottom: none;
}
main .art6 .contentBox a {
  width: 55px;
  height: 50px;
  align-self: flex-start;
  margin-top: 10px;
}
main .art6 .contentBox img {
  width: 100%;
  height: 100%;
}
main .art6 .contentBox .view .txt h3 {
  font-size: 16px;
}
main .art6 .contentBox .view .txt h5 {
  font-size: 10px;
  margin: 5px 0 10px;
}
main .art6 .contentBox .view .txt .ghostbtnRound {
  width: 65px;
  height: 23px;
  border-radius: 20px;
  border: 1px solid #fff;
  font-size: 10px;
  padding: 4px 20px 3px 20px;
  box-sizing: border-box;
  margin-bottom: 10px;
}
main .art6 .contentBox .view .txt .ghostbtnRound:hover {
  border-color: var(--blue);
  background-color: #fff;
  color: var(--blue);
}

footer {
  background-color: #777;
  text-align: center;
  color: #999;
  font-size: 12px;
  padding: 0 0 20px;
}
footer img {
  margin: 30px 0 10px;
}
footer img[alt='logo'] {
  margin: 0 10px;
}
footer .policy {
  display: flex;
  justify-content: center;
}
footer .policy li {
  display: flex;
  position: relative;
}
footer .policy li img {
  position: absolute;
  top: -15px;
}
footer .policy a {
  color: #ddd;
  font-size: 12px;
  padding: 10px;
  box-sizing: border-box;
}
footer .sns {
  display: flex;
  justify-content: center;
}
footer .sns a {
  padding: 10px;
}
footer .sns img {
  margin: 0;
}
footer .address > li > img {
  display: none;
}

@media (min-width: 768px) {
  .hide1 {
    display: none;
  }
  main .art1 {
    height: 50vw;
  }
  main .art1 .contentBox .ms .txt {
    height: 16vw;
    text-align: left;
    padding: 15px;
  }
  main .art1 .contentBox .ms .txt h3 {
    font-size: 18px;
  }
  main .art1 .contentBox .ms .txt h5 {
    display: block;
    font-size: 11px;
    margin: 10px 0;
  }
  main .art1 .contentBox .ms .txt .ghostbtn {
    margin: 0;
    padding: 6px 15px 5px;
    font-size: 11px;
    width: 70px;
    text-align: center;
  }

  main .art2 {
    margin: 40px auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
  }
  main .art2 .imgbox {
    width: 62vw;
  }
  main .art2 .txt {
    width: 28vw;
    text-align: justify;
  }
  main .art3 .txt h2 {
    margin-top: 0;
  }
  main .art3 .txt h2 {
    margin-top: 2vw;
  }

  main .art3 {
    margin: 90px 0 70px;
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    justify-items: center;
  }
  main .art3 .imgbox1 {
    display: none;
  }

  main .art3 .txt {
    width: 28vw;
    margin: 10px 0;
    text-align: justify;
    justify-self: end;
  }

  main .art5 {
    margin: 50px 0;
  }
  main .art5 .contentBox {
    grid-template-columns: repeat(5, 1fr);
    justify-items: center;
  }
  main .art5 .contentBox .key {
    width: 18vw;
    height: 43vw;
    padding: 0;
  }
  main .art5 .contentBox .key img {
    height: 34vw;
  }

  main .art6 {
    padding: 20px 15px 18px 15px;
  }
  main .art6 .contentBox {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
  main .art6 .contentBox .view {
    border-bottom: none;
    border-right: 1px solid #fff;
    grid-template-columns: 1.2fr 3fr;
    padding-bottom: 0;
  }
  main .art6 .contentBox .view .txt h3 {
    font-size: 18px;
  }
  main .art6 .contentBox .view .txt h5 {
    font-size: 12px;
    text-align: justify;
  }
  main .art6 .contentBox .view:last-child {
    border-right: none;
  }

  footer {
    display: grid;
    grid-template-columns: 1.5fr 8.5fr;
    text-align: left;
    background-color: #444;
    padding-bottom: 80px;
  }
  footer img {
    margin-left: 15px;
  }
  footer .txt {
    font-size: 14px;
    position: relative;
  }
  footer .txt .sns {
    position: absolute;
    right: 20px;
    top: 20px;
  }
  footer .txt .policy {
    justify-content: left;
    margin: 30px 0 10px;
  }
  footer .txt .policy a {
    font-size: 15px;
    padding-top: 0;
  }
  footer .txt .policy li:first-child a {
    padding-left: 0;
  }
  footer .policy li img {
    left: -15px;
    top: -24px;
  }
  footer .address {
    display: flex;
  }
  footer .address li {
    padding-right: 25px;
    height: 15px;
    margin-bottom: 12px;
    position: relative;
  }
  footer .address li img {
    display: block;
    position: absolute;
    top: -25px;
    left: -25px;
  }
}

@media (min-width: 1280px) {
  h2 {
    font-size: 34px;
  }
  header {
    height: 90px;
    align-items: center;
    padding: 10px 50px;
  }

  header .toggle {
    display: none;
  }
  :is(header) .ft_icon1,
  .ft_icon2,
  .top_btn {
    display: block;
  }
  header .gnb {
    width: 750px;
    position: static;
    display: flex;
    margin-left: auto;
    margin-right: auto;
  }
  header .gnb > li > a {
    font-weight: 500;
    font-size: 19px;
  }
  header .gnb > li:after {
    content: '';
    display: none;
    width: 150px;
    height: 2px;
    background-color: var(--blue);
    position: absolute;
    bottom: 0;
  }
  header .gnb > li:hover > a {
    background-color: transparent;
    color: #555;
  }
  header .gnb > li:hover:after {
    display: block;
  }
  header .gnb a {
    width: 150px;
    text-align: center;
    box-sizing: border-box;
  }
  header .gnb > li > .sub_menu > li > a {
    padding: 12px 20px;
  }
  header .ft_icon1 {
    padding-right: 10px;
  }
  header .gnb > li > .sub_menu {
    position: absolute;
    top: 100%;
    background-color: #333;
  }
  header .top_btn a {
    width: 44px;
    height: 44px;
    position: fixed;
    bottom: 20px;
    right: 10px;
  }

  main .slideimg h2 {
    font-size: 60px;
  }
  main .slideimg p {
    font-size: 18px;
  }

  main .art1 {
    height: 44vw;
    padding-top: 60px;
  }
  main .art1 p {
    font-size: 17px;
  }
  main .art1 .contentBox .ms .txt {
    padding: 25px;
    height: 11vw;
  }
  main .art1 .contentBox .ms .txt h3 {
    font-size: 22px;
  }
  main .art1 .contentBox .ms .txt h5 {
    font-size: 14px;
  }
  main .art1 .contentBox .ms .txt .ghostbtn,
  main .art2 .txt .ghostbtn,
  main .art3 .txt .ghostbtn,
  main .art4 .layer .ghostbtn {
    font-size: 12px;
    padding: 6px 30px 6px 30px;
    white-space: nowrap;
  }

  main .art2 {
    margin: 140px auto;
    grid-template-columns: 1.7fr 1fr;
  }
  main .art2 .imgbox {
    width: 50vw;
    justify-self: end;
  }
  main .art2 .txt,
  main .art3 .txt {
    width: 24vw;
    margin-left: 0;
  }
  main .art2 .txt h2,
  main .art3 .txt h2 {
    font-size: 56px;
  }
  main .art2 .txt p,
  main .art3 .txt p {
    font-size: 17px;
  }
  main .art2 .txt p strong,
  main .art3 .txt p strong {
    font-size: 24px;
    font-weight: 500;
  }

  main .art3 {
    margin-bottom: 120px;
  }
  main .art3 .imgbox2 {
    justify-self: start;
    width: 40vw;
    height: 40vw;
  }
  main .art3 .txt {
    width: 21vw;
  }

  main .art4 {
    padding: 120px 30px 120px 30px;
  }
  main .art4 .layer h2 {
    font-size: 34px;
  }
  main .art4 .layer p {
    font-size: 17px;
  }
  main .art4 .layer p .hide {
    display: none;
  }

  main .art5 .contentBox .key {
    width: 19vw;
    height: 34vw;
  }
  main .art5 .contentBox .key img {
    height: 26vw;
  }
  main .art5 .contentBox .key .txt {
    padding: 15px;
  }
  main .art5 .contentBox .key .txt h3 {
    font-size: 18px;
  }
  main .art5 .contentBox .key .txt h5 {
    font-size: 13px;
  }

  main .art6 .contentBox {
    width: 81vw;
    margin: 0 auto;
  }
  main .art6 .contentBox .view a {
    justify-self: center;
  }
  main .art6 .contentBox .view .txt {
    width: 16vw;
  }
  main .art6 .contentBox .view .txt .ghostbtnRound {
    padding: 4px 20px;
    font-size: 11px;
    line-height: 14px;
  }

  footer {
    padding-top: 20px;
  }
  footer > a {
    justify-self: end;
    margin-right: 36px;
  }
  footer .txt .sns {
    right: 10vw;
  }
  footer .txt .sns a {
    padding: 4px;
  }
}
@media (max-width: 768px) {
  main .slideimg {
    height: 720px;
  }
  main .art2 .imgbox {
    width: 92vw;
  }
  main .art3 .imgbox2 {
    width: 92vw;
  }
  .art3 {
    display: flex;
    flex-direction: column; /* 또는 column이면 방향에 맞춰 조절 */
  }

  .art3 .imgbox1 {
    order: 3;
  }

  .art3 .txt {
    order: 2;
  }

  .art3 .imgbox2 {
    order: 1;
  }
}
@media (max-width: 1280px) {
  header .logo {
    width: 150px;
  }
  header .gnb > li > .sub_menu > li > a {
    color: var(--blue);
  }
}

.contact {
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9;
  margin-top: 10vw;
  margin-bottom: 6vw;
  width: 60vw;
}
.contact .title {
  font-size: 50px;
  font-weight: 500;
  margin-bottom: 20px;
}

.contact .border {
  border-radius: 30px;

  padding: 80px 100px 60px;

  background-color: #ffffff7a;
  align-items: center;
}

.emailForm label {
  font-size: 20px;
}
.emailForm input {
  font-size: 18px;
  padding: 8px;
  width: 348px;
  border: none;
  margin: 10px 0 0 16px;
  background-color: transparent;
  border-bottom: 1px solid #000;
}
#userEmail {
  margin-bottom: 30px;
}
textarea {
  font-size: 18px;
  padding: 8px;
  width: 348px;
  margin: 0 0 0 14px;
  border-radius: 10px;
  line-height: 1.6;
  background-color: transparent;
  vertical-align: top;
}
.contact button {
  font-size: 20px;
  margin: 20px 0 0 92px;
  padding: 16px 20px 12px;
  border-radius: 10px;
  background-color: transparent;
  border: 1px #000 solid;
  width: 58%;
  max-width: 348px;
}
.contact button:hover {
  background-color: #777;
  color: #fff;
}

@media (max-width: 768px) {
  .contact {
    width: 90vw;
    margin-top: 20vw;
    margin-bottom: 10vw;
  }
  .contact .title {
    font-size: 30px;
    margin-bottom: 10px;
  }
  .contact .border {
    padding: 40px 20px 30px;
  }
  .emailForm label {
    display: none;
  }
  .emailForm input {
    font-size: 14px;
    width: 70vw;
    margin: 10px 0 0 8px;
  }
  #userEmail {
    margin-bottom: 20px;
  }
  textarea {
    font-size: 14px;
    width: 70vw;
    margin: 0 0 0 6px;
  }
  .contact button {
    font-size: 16px;
    margin: 20px auto 0;
    width: 70vw;
    max-width: none;
  }
}