header {
  position: fixed;
  z-index: 2;
  width: inherit;
  height: 159px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 52px 0 88px;
  transition: top 0.4s ease-out;
  background: #a3a3a3;
  box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);
}

header > a {
  cursor: pointer;
}

header > ul {
  display: flex;
}

header > ul > li > a {
  padding: 30px 52px;
  color: #fff;
  font-size: 30px;
  font-weight: 600;
}

section {
  width: inherit;
}

/* section1 */

.section1_video_wrap {
  position: relative;
  width: inherit;
  height: 682px;
  background: rgba(0, 0, 0, 0.3);
  overflow: hidden;
  backdrop-filter: blur(9px);
}

.section1_video {
  position: absolute;
  z-index: -1;
  top: 0;
  width: inherit;
  height: inherit;
  display: flex;
  justify-content: center;
  background: #000;
}

.section1_video > video {
  height: inherit;
  object-fit: cover;
}

.section1_video_cover {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.2);
}

.section1_content {
  position: absolute;
  left: 0;
  top: 198px;
  display: flex;
  column-gap: 20px;
}

.section1_content_border {
  width: 244px;
  height: 1px;
  padding-top: 25px;
  border-bottom: 1px solid #fff;
}

.section1_content_text {
}

.section1_content_text > p {
  font-size: 30px;
  color: #fff;
}

.section1_content_text > h2 {
  margin-top: 20px;
}

/* section2 */

#section2 {
  min-height: 85dvh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.section2_content {
  display: flex;
  align-items: center;
  column-gap: 25px;
}
.section2_content_bar {
  width: 13px;
  height: 47px;
  background: #1b91cf;
}

.section2_content_text {
  text-align: center;
}
.section2_content_text > p {
  font-size: 29px;
}
.section2_content_text > h2 {
  font-size: 37px;
  color: #1b91cf;
}
.section2_content_text > h2 > span {
  font-size: 50px;
  font-weight: 600;
}

.section2_regul {
  color: #353535;
  font-size: 30px;
  opacity: 0;
}

.section2_bold {
  display: inline-block;
  color: #03a7fe;
  font-size: 60px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(-20px);
}

#section2.active .section2_regul {
  opacity: 1;
  transition: opacity 0.2s ease-in calc(var(--i) * 0.2s);
}

#section2.active .section2_bold {
  opacity: 1;
  transform: translateY(0px);
  margin: 0 30px;
  transition: margin 0.4s ease-out calc(var(--i) * 0.4s),
    opacity 0.2s ease-in calc(var(--i) * 0.2s),
    transform 0.4s ease-out calc(var(--i) * 0.3s);
}

/* section3 */

#section3 {
  padding: 0 125px;
}

#section3 > h2 {
  text-align: center;
  font-size: 35px;
  font-weight: 600;
  color: #000000;
}

#section3 > h2 > span {
  font-size: 35px;
  color: #000000;
}

#section3 > p {
  text-align: center;
  font-size: 30px;
  color: #808c95;
}

.section_content_wrap {
  width: inherit;
  display: flex;
  align-items: flex-start;
  padding-top: 50px;
  column-gap: 50px;
}

.section_content_wrap > span {
  display: block;
  margin-top: 200px;
  font-size: 35px;
  color: #1b91cf;
  font-weight: 600;
}

.section3_content {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  column-gap: 100px;
  row-gap: 80px;
  padding-bottom: 200px;
}

.card {
  flex: 1;
  display: flex;
  flex-direction: column;
  row-gap: 20px;
  align-items: center;
}

.card > img {
  width: 100%;
}

.card > p {
  text-align: center;
  color: #505050;
  font-size: 25px;
}

/* lpt_link_section */

#lpt_link_section {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50dvh;
  cursor: pointer;
}

#lpt_link_section > .content {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

#lpt_link_section > .cover {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0);
  transition: background 0.4s ease-in-out;
}

#lpt_link_section:hover > .cover {
  background: rgba(0, 0, 0, 0.8);
}

#lpt_link_section > img {
  position: absolute;
  height: 100%;
}

#lpt_link_section > div h2 {
  font-size: 40px;
  color: #fff;
  font-weight: 600;
}

#lpt_link_section > div p {
  font-size: 30px;
  color: #fff;
}

/* section4 */

#section4 {
  padding: 150px 0;
}

.section4_title {
  display: flex;
  align-items: center;
  column-gap: 20px;
  padding: 0 100px;
}

.section4_title > .bar {
  flex: 1;
  height: 2px;
  background: #000;
}

.section4_title > h2 {
  font-size: 35px;
  font-weight: 600;
  color: #1b91cf;
  text-align: center;
}

.section4_content {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  column-gap: 164px;
  row-gap: 50px;
  margin-top: 125px;
}

.section4_content > .card {
  flex: none;
  width: auto;
}

.section4_content > .card > p {
  font-weight: 600;
  color: #2b2b2b;
}

.section4_content > img {
  width: 100%;
  object-fit: cover;
}

/* section5 */

#section5 {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 85dvh;
}

.section5_content {
  display: flex;
  align-items: center;
}

.section5_regul {
  color: #353535;
  font-size: 30px;
  opacity: 0;
  filter: blur(9px);
}

.section5_bold {
  display: inline-block;
  color: #03a7fe;
  margin: 0 30px;
  font-size: 60px;
  font-weight: 600;
  opacity: 0;
  filter: blur(9px);
}

#section5.active .section5_regul,
#section5.active .section5_bold {
  opacity: 1;
  filter: blur(0px);
  transition: opacity 0.4s ease-in calc(var(--i) * 0.1s),
    filter 0.6s ease-in calc(var(--i) * 0.1s);
}

/* section6 */

#section6 > h2 {
  color: #303030;
  font-size: 35px;
  font-weight: 600;
  margin: 100px 0 30px;
  text-align: center;
}

.section6_content {
  display: flex;
  flex-wrap: wrap;
  background: #000;
}

.section6_card {
  position: relative;
  width: 50%;
  min-height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.card_large {
  width: 100%;
}

.section6_card.signumHouse {
  background-image: url(/image/signum.png);
}
.section6_card.aihub {
  background-image: url(/image/aihub.png);
}
.section6_card.jongam {
  background-image: url(/image/jongam.png);
}
.section6_card.maline {
  background-image: url(/image/maline.png);
}
.section6_card.guan {
  background-image: url(/image/guan.png);
}
.section6_card.else1 {
  background-image: url(/image/else1.png);
}
.section6_card.else2 {
  background-image: url(/image/else2.png);
}
.section6_card.else3 {
  background-image: url(/image/else3.png);
}
.section6_card.mjen {
  background-image: url(/image/section6_mjen.png);
}

.card_cover {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}

.card_content {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.card_content > p {
  color: #fff;
  font-size: 25px;
  text-align: center;
}

.card_content > p:first-child {
  font-weight: 600;
}

/* board section */
#board_section {
  padding: 50px;
}

.board_wrap {
  width: 100%;
  border-radius: 30px;
  border: 2px solid #c5c5c5;
  padding-bottom: 30px;
}

.board_wrap > h2 {
  text-align: center;
  padding: 35px 0;
  font-size: 35px;
}

.board_wrap > table th {
  text-align: center;
  border-bottom: 2px solid #e8e8e8;
  padding: 0 0 20px;
}

.board_wrap > table td {
  text-align: center;
  padding: 10px 0;
}
/* section7 */

#section7 {
  min-height: 100dvh;
  padding: 156px 0;
  background: #f7f7f7;
}

#section7 > h2 {
  text-align: center;
  font-size: 35px;
  font-weight: 600;
  color: #585755;
}

.tel {
  font-size: 25px;
  margin: 10px auto;
  text-align: center;
}

.inform {
  display: flex;
  flex-direction: column;
  align-items: center;
  row-gap: 23px;
  width: inherit;
  margin-top: 90px;
  padding: 0 148px;
}

.inputBox {
  display: flex;
  align-items: center;
  column-gap: 20px;
  width: 100%;
  min-height: 93px;
  padding: 0 50px;
  border-radius: 25px;
  background: #fff;
}

.inputBox:has(input:focus),
.inputBox:has(textarea:focus) {
  box-shadow: 0px 0px 40px 10px rgba(0, 0, 0, 0.15);
}

.inputBox > span {
  display: block;
  width: 150px;
  font-size: 25px;
  color: #585755;
  white-space: nowrap;
}

.inputBox > input,
.inputBox > textarea {
  outline: none;
  border: none;
  font-size: 25px;
  background: inherit;
}

.inputBox > input {
  flex: 1;
  height: 100%;
}

.inputBox > textarea {
  flex: 1;
  height: 375px;
  font-family: "Noto Sans KR", sans-serif;
}

.inform_submit {
  outline: none;
  border: none;
  background: rgba(0, 0, 0, 0.03);
  color: #fff;
  font-size: 21px;
  align-self: flex-end;
  width: 100%;
  height: 93px;
  border-radius: 15px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  color: #555;
}

.inform_submit:active {
  box-shadow: 0 3px 4px rgba(0, 0, 0, 0.3) inset;
}

/* section8 */

.section8_video_wrap {
  position: relative;
  width: inherit;
  height: 682px;
  background: rgba(0, 0, 0, 0.3);
  overflow: hidden;
  backdrop-filter: blur(9px);
}

.section8_video {
  position: absolute;
  z-index: -1;
  top: 0;
  width: inherit;
  height: inherit;
  display: flex;
  justify-content: center;
  background: #000;
}

.section8_video > video {
  height: inherit;
  object-fit: cover;
}

.section8_content {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  row-gap: 136px;
  padding-top: 75px;
}

.section8_content p {
  text-align: center;
  font-size: 30px;
  color: #fff;
}

.section8_content h2 {
  text-align: center;
  font-size: 60px;
  font-weight: 600;
  color: #fff;
  margin-top: 15px;
}

.popup_bg {
  position: fixed;
  left: 0;
  top: 0;
  width: 100dvw;
  height: 100dvh;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(9px);
  justify-content: center;
  align-items: center;
  display: none;
}

.inputWrap,
.post_wrap {
  padding: 30px 45px;
  background: #fff;
  border-radius: 15px;
  box-shadow: 0 3px 4px rgba(0, 0, 0, 0.3);
}

.post {
  width: 600px;
}

.post > h2 {
  border-bottom: 1px solid rgba(0, 0, 0, 0.6);
  padding: 7px 0;
  margin-bottom: 7px;
}

.post_info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}

.post_info > span {
  font-size: 13px;
  color: #999;
}

footer {
  padding: 145px 0 99px 101px;
  background: rgba(0, 0, 0, 0.33);
}

footer > h2 {
  color: #fff;
  font-family: Raleway;
  font-size: 40px;
  font-style: normal;
  font-weight: 700;
  line-height: normal;
}

footer > h2 > span {
  background: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, 0) 107.27%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

footer > p {
  margin-top: 27px;
  color: #fff;
  font-family: Raleway;
  font-size: 20px;
  font-style: normal;
  font-weight: 500;
  line-height: normal;
}

/* mobile */

@media screen and (max-width: 768px) {
  .container {
    width: 100dvw;
  }

  .section1_video_wrap {
    height: 50dvh;
  }

  .section1_content_border {
    width: 50px;
    padding-top: 15px;
  }

  .section1_content_text > p {
    font-size: 16px;
  }

  .section1_content_text > h2 {
    font-size: 26px;
  }

  .section2_content_text > p {
    font-size: 14px;
  }

  .section2_content_text > h2 {
    font-size: 18px;
  }

  .section2_content_text > h2 > span {
    font-size: 20px;
  }

  .section2_content_bar {
    width: 8px;
    height: 28px;
    background: #1b91cf;
  }

  .section2_regul {
    font-size: 16px;
  }

  .section2_bold {
    font-size: 24px;
  }

  .section2_bold > img {
    width: 140px;
  }

  #section2.active .section2_bold {
    opacity: 1;
    transform: translateY(0px);
    margin: 0 15px;
    transition: margin 0.4s ease-out calc(var(--i) * 0.4s),
      opacity 0.2s ease-in calc(var(--i) * 0.2s),
      transform 0.4s ease-out calc(var(--i) * 0.3s);
  }

  #section3 {
    padding: 0 30px;
  }

  .section_content_wrap {
    width: auto;
    flex-direction: column;
    padding-top: 0;
    align-items: center;
    margin-bottom: 100px;
  }

  .section_content_wrap > span {
    font-size: 24px;
    margin: 15px 0;
  }

  .card > p {
    text-align: center;
    color: #6c6c6c;
    font-size: 14px;
  }

  .section3_content {
    padding-bottom: 0;
  }

  #section3 > h2 {
    font-size: 18px;
  }
  #section3 > h2 > span {
    font-size: 24px;
    color: #03a7fe;
  }

  #section3 > p {
    font-size: 14px;
    color: #585858;
  }

  .section3_content {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    column-gap: 0px;
    row-gap: 0px;
    padding-bottom: 0;
  }

  .section3_content > img {
    width: 50%;
  }
  #lpt_link_section {
    height: 35dvh;
  }

  #lpt_link_section > .cover {
    background: rgba(0, 0, 0, 0.7);
  }

  #lpt_link_section > div h2 {
    font-size: 20px;
    color: #fff;
    font-weight: 600;
    white-space: nowrap;
  }

  #lpt_link_section > div p {
    font-size: 14px;
    white-space: nowrap;
  }

  #section4 {
    background: #ededed;
    padding: 150px 30px;
  }

  #section4 > h2 {
    font-size: 24px;
  }

  .section4_content > .card {
    width: 100%;
  }

  .section4_title {
    padding: 0;
    column-gap: 10px;
  }
  .section4_title > h2 {
    font-size: 20px;
  }

  .section4_title > .bar {
    height: 1px;
  }

  .section4_bar {
    margin-top: 15px;
  }

  .section4_content {
    margin-top: 50px;
  }

  .section5_regul {
    font-size: 16px;
  }

  .section5_bold {
    font-size: 24px;
    margin: 0 15px;
  }

  .section5_bold > img {
    width: 140px;
  }

  #section6 > h2 {
    font-size: 20px;
    text-indent: 20px;
  }

  .section6_card {
    width: 50%;
    min-height: 200px;
  }
  .card_large {
    width: 100%;
  }

  .card_content > p {
    color: #fff;
    font-size: 16px;
    white-space: nowrap;
    text-align: center;
  }

  #section7 {
    padding: 75px 0;
  }

  #section7 > h2 {
    font-size: 20px;
  }

  .tel {
    font-size: 14px;
    padding: 30px;
  }
  .inform {
    margin-top: 40px;
    padding: 0 30px;
  }

  .inputBox {
    column-gap: 20px;
    min-height: 60px;
    padding: 0 20px;
  }
  .inputBox > span {
    font-size: 14px;
    width: 60px;
  }

  .inputBox > input,
  .inputBox > textarea {
    font-size: 14px;
  }

  .inform_submit {
    outline: none;
    border: none;
    background: #e3f1fe;
    color: #fff;
    font-size: 14px;
    border-radius: 10px;
    align-self: flex-end;
    width: 100%;
    height: 45px;
    border-radius: 15px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    color: #555;
  }

  .section8_video_wrap {
    height: 70dvh;
  }

  .section8_content p {
    font-size: 20px;
  }

  .section8_content h2 {
    margin-top: 15px;
    font-size: 24px;
  }

  .section8_content h2 > img {
    width: 140px;
  }

  header {
    height: 60px;
    padding: 0 20px;
  }

  header > a img {
    width: 100px;
  }

  header > ul {
    flex-wrap: wrap;
    margin-left: 30px;
    justify-content: flex-end;
  }

  header > ul > li > a {
    padding: 2px 15px;
    font-size: 14px;
  }

  /* board_section */

  #board_section {
    padding: 15px;
  }

  .board_wrap {
    border-radius: 15px;
    padding-bottom: 10px;
  }

  .board_wrap > h2 {
    padding: 15px 0;
    font-size: 20px;
  }

  .board_wrap > table th {
    padding: 0 0 10px;
    font-size: 12px;
  }

  .board_wrap > table td {
    text-align: center;
    padding: 3px 0;
    font-size: 12px;
  }

  .post_wrap {
    width: 90%;
  }

  .post {
    width: 100%;
  }

  .post_wrap {
    padding: 15px 25px;
  }

  footer {
    padding: 50px 0 50px 30px;
  }

  footer > h2 {
    font-size: 30px;
  }

  footer > h2 img {
    width: 120px;
  }
  footer > p {
    font-size: 14px;
  }
}