/* main banner section */
section.main_banner {
  /* background-color: red; */
  height: 780px;
}
.main_banner .b_slid01 {
  background-color: #ffedbe;
}
.main_banner .b_slid02 {
  background-color: #d0efff;
}
.main_banner .b_slid03 {
  background-color: #ffe5ee;
}
.main_banner .swiper-slide .wrap {
  height: 100%;
}
.main_banner .swiper-slide .banner_title {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  flex-flow: column;
  -ms-flex-flow: column;
  height: 100%;
  padding-top: 120px;
}
.main_banner .swiper-slide .banner_title h6 {
  font-size: 20px;
  color: var(--gray-1);
}

.main_banner .swiper-slide .banner_title h2 {
  font-size: 30px;
  margin-bottom: 10px
}

.main_banner .swiper-slide .banner_title h1 {
  margin-top: 50px;
  margin-bottom: 35px;
  font-size: 50px;
  font-weight: 400;
  letter-spacing: -1px;
}

.banner_title_img{}
.banner_title_img img{width: auto}


.main_banner .swiper-slide .banner_title p {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -1px;
  color: #666;
}
.main_banner .swiper-slide .banner_title .more_btn {
  margin-top: 85px;
}

/* 메인배너 이미지 */
.main_banner .swiper-slide .image_area {
  width: 55%;
  height: 100%;
  position: absolute;
  top: 0;
  right: 0;
}
.main_banner .swiper-slide .image_area > div {
  position: absolute;
}
/* 메인배너 1 이미지 */
.main_banner .swiper-slide.b_slid01 .image_area .item1 {
  width: 600px;
  left: 260px;
  bottom: -215px;
  /* animation: a_item1 .8s linear .2s both; */
}
.main_banner .swiper-slide.b_slid01 .image_area .item2 {
  width: 300px;
  left: 15px;
  bottom: 135px;
  animation: a_type1 5s linear both infinite alternate;
}
.main_banner .swiper-slide.b_slid01 .image_area .item3 {
  width: 130px;
  left: 215px;
  bottom: 545px;
  animation: a_type2 3s linear both infinite alternate;
}
/* 메인배너 2 이미지 */
.main_banner .swiper-slide.b_slid02 .image_area .item1 {
  width: 500px;
  left: 130px;
  bottom: 100px;
  /* animation: a_item1 .8s linear .2s both; */
}
.main_banner .swiper-slide.b_slid02 .image_area .item2 {
  width: 450px;
  left: 170px;
  bottom: 105px;
  animation: a_type3 5s linear both infinite alternate;
}
.main_banner .swiper-slide.b_slid02 .image_area .item3 {
  width: 95px;
  left: 160px;
  bottom: 585px;
  animation: a_type2 3s linear both infinite alternate;
}
.main_banner .swiper-slide.b_slid02 .image_area .item4 {
  width: 130px;
  left: 670px;
  top: 210px;
  animation: a_type4 3s linear both infinite alternate;
} 
.main_banner .swiper-slide.b_slid02 .image_area .item5 {
  width: 50px;
  left: 280px;
  top: 100px;
  animation: a_type3 2s linear both infinite alternate;
} 
/* 메인배너 3 이미지 */
.main_banner .swiper-slide.b_slid03 .image_area .item1 {
  width: 360px;
  left: 465px;
  bottom: 120px;
  /* animation: a_item1 .8s linear .2s both; */
}
.main_banner .swiper-slide.b_slid03 .image_area .item2 {
  width: 510px;
  left: 170px;
  bottom: 217px;
  animation: a_type3 7s linear both infinite alternate;
}
.main_banner .swiper-slide.b_slid03 .image_area .item3 {
  width: 180px;
  left: 24px;
  bottom: 218px;
  animation: a_type2 5s linear both infinite alternate;
}
.main_banner .swiper-slide.b_slid03 .image_area .item4 {
  width: 65px;
  left: 505px;
  top: 285px;
  animation: a_type1 3s linear both infinite alternate;
} 

/* slide 관련 */
.main_banner .slide_items {
  position: absolute;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  display: flex;
  align-items: center;
}
.main_banner .slide_items .pagination_bullet {
  position: initial;
  text-align: left;
  width: 80px;
}
.main_banner .slide_items .pagination_bullet span {
  font-family: 'GmarketSans';
  font-size: 16px;
}
.main_banner .slide_items .pagination_bullet .swiper-pagination-total {
  opacity: 0.3;
}
.main_banner .slide_items .bottom_item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-align: center;
  align-items: center;
}
.main_banner .slide_items .bottom_item .pagination_progress {
  width: 300px;
  height: 2px;
  position: relative;
  background-color: #fff;
  margin-right: 25px;
}
.main_banner .slide_items .bottom_item .pagination_progress span {
  background-color: #fff;
  border-radius: 5px;
  height: 5px;
  top: -2px;
}
.main_banner .slide_items .bottom_item .swiper-button-next,
.main_banner .slide_items .bottom_item .swiper-button-prev {
  position: initial;
  color: rgba(0, 0, 0, 0.3);
  margin-top: 0;
  width: 25px;
  height: 5px;
}
.main_banner .slide_items .bottom_item .swiper-button-next::after,
.main_banner .slide_items .bottom_item .swiper-button-prev::after {
  font-size: 25px;
}

/* video section */
section.video_part {
  position: relative;
}
.a_v_start {
  position: absolute;
  top: 50%;
}
section.video_part .wrap {
  padding: 100px 0;
}
section.video_part .wrap > h2 {
  font-size: 42px;
  margin-bottom: 45px;
  font-weight: 400;
}
.video_part .wrap ul {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
  -ms-flex-align: start;
  align-items: flex-start;
  justify-content: space-between;
}
.video_part .image_area {
  position: relative;
}
.video_part .image_area .item1 {
  /* z-index: 20; */
  /* position: relative; */
  width: 670px;
  height: 440px;
}
.video_part .image_area .item2 {
  position: absolute;
  width: 180px;
  right: -130px;
  bottom: -60px;
  animation: a_type2 3s linear both infinite alternate;
}
.video_part .image_area .item3 {
  position: absolute;
  width: 100px;
  left: -107px;
  bottom: 225px;
  animation: a_type1 5s linear both infinite alternate;
}
.video_part .image_area .item4 {
  position: absolute;
  width: 40px;
  left: -100px;
  bottom: 420px;
  animation: a_type2 5s linear both infinite alternate;
}  
.video_part .image_area > h3 {
  font-size: 30px;
  font-weight: 300;
  margin-top: 30px;
  letter-spacing: -1px;
}
.video_part .image_area > h3 b {
  font-weight: 700;
  color: #7b76ee;
}
.video_part ul ol {
  width: 420px;
}
.video_part ul ol li {
  padding: 40px 30px;
  border-radius: 10px;
  background-size: 90px;
  background-position: calc(100% - 30px) 50%;
  cursor: pointer;
}
.video_part ul ol li:nth-child(1) {
  background-color: #b396f9;
  background-image: url('../images/video_img02_1.png');
  background-size: 110px;
}
.video_part ul ol li:nth-child(2) {
  background-color: #fabe4b;
  background-image: url('../images/video_img02_2.png');
  background-position: calc(100% - 40px) 50%;
  margin: 30px 0;
}
.video_part ul ol li:nth-child(3) {
  background-color: #68d1f8;
  background-image: url('../images/video_img02_3.png');
}
.video_part ul ol li h6 {
  font-size: 22px;
  color: #fff;
  font-weight: 400;
}
.video_part ul ol li span {
  color: #fff;
  margin-bottom: 15px;
  display: block;
  font-weight: 400;
}

.video_part ul ol li h6 + h6{margin-top: 3px}

/* Notice section */

section.notice {
  background-color: #dbf7f7;
  padding: 100px 0;
  overflow: hidden;
  background-image: url('../images/notice_bg.png');
  background-size: 1000px;
  background-position: right 250px;
}
.notice .wrap {
  position: relative;
}
.notice .section_title {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  justify-content: space-between;
}
.notice .section_title h2 {
  font-size: 42px;
  font-weight: 400;
  color: #222;
}
.notice .section_title a {
  text-decoration: underline;
  position: relative;
  z-index: 100;
}
.notice .notice_swiper {
  /* padding: 0 20px; */
  padding-top: 50px;
  padding-bottom: 120px;
  padding-right: 17px;
  position: relative;
}
.notice_swiper .swiper-slide {
  height: 440px;
  background-color: #fff;
  border-radius: 0 0 30px 0;
  padding: 50px 40px;
  box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-flow: column;
  align-items: flex-start;
}
.notice_swiper .swiper-slide img {
  height: 200px;
  object-fit: cover;
}
.notice_swiper .swiper-slide h2 {
  font-size: 25px;
  font-weight: 700;
}
.notice_swiper .swiper-slide h3 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 30px;
}
.notice_swiper .swiper-slide p {
  margin-top: 30px;
  font-weight: 500;
  line-height: 1.7em;
}
.notice_swiper .swiper-slide span {
  margin-top: auto;
  font-weight: 300;
}
/* 공지사항 슬라이드 start*/
.notice_swiper .slide_items {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  bottom: 10px;
  left: 0;
}
.notice_swiper .slide_items .swiper-pagination {
  width: 230px;
  height: 2px;
  position: relative;
  background-color: rgba(119, 119, 119, 0.562);
  margin-right: 25px;
}
.notice_swiper .slide_items .swiper-pagination span {
  background-color: #555;
  border-radius: 5px;
  height: 5px;
  top: -2px;
}
.notice_swiper .slide_items .swiper-button-next,
.notice_swiper .slide_items .swiper-button-prev {
  position: initial;
  color: rgba(0, 0, 0, 0.3);
  margin-top: 0;
  width: 25px;
  height: 5px;
}
.notice_swiper .slide_items .swiper-button-next::after,
.notice_swiper .slide_items .swiper-button-prev::after {
  font-size: 25px;
}
/* ■■■■■■■■■■■■■■■■■ 공지사항 슬라이드 END ■■■■■■■■■■■■■■■■ */
.notice .image_area {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}
.notice .image_area > div {
  position: absolute;
}
.notice .image_area .item1 {
  width: 260px;
  left: -305px;
  bottom: -163px;
}
.notice .image_area .item2 {
  right: -325px;
  bottom: -123px;
}
.notice .image_area .item3 {
  top: 5px;
  right: 110px;
}

/* section :  learning */

section.learning {
  padding: 150px 0;
}
.learning .wrap {
  width: 1320px;
}
.learning .wrap > h2 {
  font-size: 42px;
  padding: 0 60px;
  font-weight: 400;
}
.learning .learning_swiper {
  padding: 50px 60px;
}
.learning .learning_swiper .swiper-slide {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.learning .learning_swiper .swiper-slide .img_part {
  width: 670px;
}
.learning .learning_swiper .swiper-slide .text_part {
  width: 480px;
}
.learning .learning_swiper .swiper-slide .text_part h3 {
  margin: 40px 0;
  font-size: 35px;
  font-family: 'Spoqa Han Sans';
}
.learning .learning_swiper .swiper-slide .text_part p {
  font-size: 18px;
  margin-bottom: 65px;
  font-weight: 400;
  word-break: keep-all;
}

.learning .learning_swiper .swiper-button-prev,
.learning .learning_swiper .swiper-button-next {
  color: rgba(0, 0, 0, 0.3);
  margin-top: 0;
  width: 25px;
}

/* project section */

section.project {
  padding: 100px 0;
  overflow: hidden;
  position: relative;
}

.project .go_to_top {
  position: absolute;
  right: 50px;
  bottom: 50px;
}
.project .wrap {
  position: relative;
}
.project .section_title {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.project .section_title h2 {
  font-size: 42px;
  font-weight: 400;
}
.project .section_title a {
  text-decoration: underline;
}
.project .project_swiper {
  padding-top: 50px;
  padding-bottom: 120px;
  position: relative;
}
.project_swiper .swiper-slide {
  height: 445px;
  background-color: #fff;
  display: flex;
  flex-flow: column;
  align-items: flex-start;
}
.project_swiper .swiper-slide img {
  height: 240px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 35px;
}
.project_swiper .swiper-slide h2 {
  font-family: 'Spoqa Han Sans';
  font-size: 24px;
  font-weight: 700;
}
.project_swiper .swiper-slide h3 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.project_swiper .swiper-slide p {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.project_swiper .swiper-slide span {
  margin: 25px 0;
  height: 1px;
  width: 100%;
  background-color: #dddddd;
}
/* 공지사항 슬라이드 start*/
.project_swiper .slide_items {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  bottom: 10px;
  left: 0;
}
.project_swiper .slide_items .swiper-pagination {
  position: relative;
}
.project_swiper .slide_items .swiper-pagination span {
  background-color: #ff7044;
  top: -2px;
}

@media screen and (max-width: 1281px) {
  section {
    width: 100%;
    overflow: hidden;
  }
  .wrap {
    width: 95%;
  }
  /* main banner section */
  section.main_banner {
    height: 600px;
  }
  .main_banner .swiper-slide .banner_title {
    padding-top: 100px;
  }
  .main_banner .swiper-slide .banner_title h6 {
    font-size: 18px;
  }
  .main_banner .swiper-slide .banner_title h1 {
    font-size: 40px;
    margin-top: 30px;
    margin-bottom: 15px;
  }
  .main_banner .swiper-slide .banner_title p {
    font-size: 22px;
  }
  /* 메인배너 1 이미지 */
  .main_banner .swiper-slide.b_slid01 .image_area .item1 {
    width: 500px;
    left: 170px;
    bottom: -175px;
  }
  .main_banner .swiper-slide.b_slid01 .image_area .item2 {
    width: 250px;
    left: 0;
    bottom: 100px;
  }
  .main_banner .swiper-slide.b_slid01 .image_area .item3 {
    width: 100px;
    left: 200px;
    bottom: 500px;
  }
  /* 메인배너 2 이미지 */
  .main_banner .swiper-slide.b_slid02 .image_area .item1 {
    width: 500px;
    left: 55px;
    bottom: 100px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item2 {
    width: 400px;
    left: 100px;
    bottom: 55px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item3 {
    left: 60px;
    bottom: 450px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item4 {
    width: 130px;
    left: 500px;
    top: 150px;
  } 
  .main_banner .swiper-slide.b_slid02 .image_area .item5 {
    left: 240px;
    top: 50px;
  }
  /* 메인배너 3 이미지 */
  .main_banner .swiper-slide.b_slid03 .image_area .item1 {
    width: 320px;
    left: 330px;
    bottom: 30px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item2 {
    width: 450px;
    left: 100px;
    bottom: 130px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item3 {
    width: 140px;
    left: 15px;
    bottom: 130px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item4 {
    width: 65px;
    left: 350px;
    top: 245px;
  }
  /* video section */
  section.video_part .wrap {
    padding: 60px 0;
  }
  section.video_part .wrap > h2 {
    font-size: 38px;
    margin-bottom: 35px;
  }
  .video_part .image_area .item1 {
    width: 600px;
    height: 400px;
  }
  .video_part .image_area .item2 {
    width: 120px;
    right: -100px;
    bottom: 0;
  }
  .video_part .image_area .item3 {
    width: 70px;
    left: -35px;
    bottom: 250px;
  }
  .video_part .image_area .item4 {
    left: -50px;
    bottom: 450px;
  }
  .video_part .image_area > h3 {
    font-size: 28px;
  }
  .video_part ul ol {
    width: 100%;
    max-width: 420px;
    min-width: 325px;
  }
  .video_part ul > li:last-child {
    width: 40%;
  }
  .video_part ul ol li {
    padding: 30px 20px;
  }
  .video_part ul ol li h6 {
    font-size: 20px;
  }

  /* Notice section */ 
  section.notice {
    padding: 60px 0;
  }
  .notice .section_title {
    width: 250px;
    z-index: 100;
    position: relative;
  }
  .notice .section_title h2 {
    font-size: 38px;
  }
  .notice .notice_swiper {
    padding-top: 30px;
    padding-bottom: 100px;
  }
  .notice_swiper .swiper-slide {
    height: 400px;
    padding: 35px 20px;
  }
  .notice_swiper .swiper-slide img {
    height: 150px;
  }
  .notice_swiper .swiper-slide h2 {
    font-size: 23px;
  }
  .notice_swiper .swiper-slide h3 {
    font-size: 18px;
  }
  .notice .image_area .item1 {
    width: 200px;
    left: -100px;
  }
  .notice .image_area .item2 {
    right: -220px;
  }
  .notice .image_area .item3 {
    top: -20px;
  }

  /* section :  learning */

  section.learning {
    padding: 70px 0;
  }
  .learning .wrap {
    width: 95%;
  }
  .learning .wrap > h2 {
    padding: 0;
    font-size: 38px;
  }
  .learning .learning_swiper {
    padding: 50px 30px;
  } 
  .learning .learning_swiper .swiper-slide .img_part {
    width: 50%;
  }
  .learning .learning_swiper .swiper-slide .text_part {
    width: 40%;
  }
  .learning .learning_swiper .swiper-slide .text_part  h3 {
    margin: 20px 0;
    font-size: 32px;
  }
  .learning .learning_swiper .swiper-slide .text_part p {
    font-size: 15px;
    margin-bottom: 35px;
  }

  /* project section */
  section.project {
    padding: 60px 0;
  }
  .project .section_title {
    width: 250px;
  }
  .project .section_title h2 {
    font-size: 38px;
  }
  .project .project_swiper {
    padding-top: 25px;
    padding-bottom: 120px;
  }
  .project_swiper .swiper-slide {
    height: 360px;
  }
  .project_swiper .swiper-slide img {
    height: 180px;
  }
  .project_swiper .swiper-slide h2 {
    font-size: 22px;
  }
  .project_swiper .swiper-slide span {
    margin: 15px 0;
  }
}
@media screen and (max-width: 1081px) {
	
	.main_banner .swiper-slide .banner_title h2 {
  font-size: 18px;
  margin-bottom: 10px
}


.banner_title_img{width: 100%}
.banner_title_img img{width: 100%}
	
  .main_banner .swiper-slide .banner_title {
    padding-top: 100px;
  }
  .main_banner .swiper-slide .banner_title h6 {
    font-size: 18px;
  }
  .main_banner .swiper-slide .banner_title h1 {
    font-size: 35px;
  }
  .main_banner .swiper-slide .banner_title p {
    font-size: 18px;
  }
  /* 메인배너 1 이미지 */
  .main_banner .swiper-slide.b_slid01 .image_area .item1 {
    width: 395px;
    left: 121px;
    bottom: -95px;
  }
  .main_banner .swiper-slide.b_slid01 .image_area .item2 {
    width: 200px;
    left: 0;
    bottom: 80px;
  }
  .main_banner .swiper-slide.b_slid01 .image_area .item3 {
    width: 100px;
    left: 145px;
    bottom: 450px;
  }
  /* 메인배너 2 이미지 */
  .main_banner .swiper-slide.b_slid02 .image_area .item1 {
    width: 385px;
    left: 55px;
    bottom: 100px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item2 {
    width: 330px;
    left: 65px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item4 {
    width: 110px;
    left: 370px;
  } 
  /* 메인배너 3 이미지 */
  .main_banner .swiper-slide.b_slid03 .image_area .item1 {
    width: 255px;
    left: 270px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item4 {
    width: 40px;
    left: 260px;
  }

  /* video section */
  .video_part .image_area .item1 {
    width: 400px;
    height: 200px;
  }
  .video_part .image_area .item2 {
    width: 120px;
    right: -112px;
    bottom: 33px;
  }
  .video_part .image_area .item3 {
    width: 80px;
    left: -15px;
  }
  .video_part .image_area .item4 {
    left: -35px;
    bottom: 390px;
  }
  .video_part .image_area > h3 {
    font-family: 'Spoqa Han Sans';
    font-size: 26px;
    font-weight: 400;
  }
  .video_part .image_area > h3 b{
    font-weight: 700;
  }

  /* section :  learning */
  .learning .learning_swiper {
    padding: 50px 0;
  }
  .learning .learning_swiper .swiper-slide .text_part {
    width: 45%;
  }
  .learning .learning_swiper .swiper-slide .text_part h3 {
    font-size: 28px;
  }
  .learning .learning_swiper .swiper-button-prev,
  .learning .learning_swiper .swiper-button-next {
    top:25%;
  }

}

@media screen and (max-width: 768px) {
  .container {
    padding-top: 50px;
  }
  /* main banner section */
  .main_banner .swiper-slide .wrap {
	padding: 0 20px
  }
  .main_banner .swiper-slide .banner_title {
    padding-top: 35px;
  }
  .banner_title_img{margin-top: 25px}
  .banner_title_img img {
    max-height: 50px;
    width: 100%;
    width: auto;
	}
  
  .main_banner .swiper-slide .banner_title h2{font-size: 17px;}
  
  .main_banner .swiper-slide .banner_title h6 {
    font-size: 16px;
  }
  .main_banner .swiper-slide .banner_title h1 {
    font-size: 26px;
    margin-top: 25px;
  }
  .main_banner .swiper-slide .banner_title p {
    font-size: 15px; word-break: keep-all
  }
  
  .main_banner .swiper-slide .banner_title p br{display: none}
  .main_banner .swiper-slide .banner_title .more_btn {
    margin-top: 35px;
    z-index: 2;
    position: relative
  }
  .main_banner .swiper-slide .image_area {
    width: 100%;
    max-width: 320px;
    left: 50%;
    transform: translateX(-50%);
  }
  /* 메인배너 1 이미지 */
  .main_banner .swiper-slide.b_slid01 .image_area .item1 {
    width: 300px;
    left: 80px;
    bottom: -135px;
  }
  .main_banner .swiper-slide.b_slid01 .image_area .item2 {
    width: 120px;
    left: 10px;
    bottom: 70px;
  }
  .main_banner .swiper-slide.b_slid01 .image_area .item3 {
    width: 60px;
    left: 100px;
    bottom: 260px;
  }
  /* 메인배너 2 이미지 */
  .main_banner .swiper-slide.b_slid02 .image_area .item1 {
    width: 200px;
    left: 40px;
    bottom: 90px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item2 {
    width: 200px;
    left: 30px;
    bottom: 55px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item3 {
    left: 20px;
    bottom: 260px;
    width: 65px;
  }
  .main_banner .swiper-slide.b_slid02 .image_area .item4 {
    width: 70px;
    left: 235px;
    top: 260px;
  } 
  .main_banner .swiper-slide.b_slid02 .image_area .item5 {
    left: 62px;
    top: 282px;
  }

  /* 메인배너 3 이미지 */
  .main_banner .swiper-slide.b_slid03 .image_area .item1 {
    width: 170px;
    left: 145px;
    bottom: 55px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item2 {
    width: 275px;
    left: 20px;
    bottom: 85px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item3 {
    width: 95px;
    left: 0;
    bottom: 80px;
  }
  .main_banner .swiper-slide.b_slid03 .image_area .item4 {
    width: 20px;
    left: 150px;
    top: 380px;
  }
  .main_banner .slide_items {
    bottom: 25px;
  }
  .main_banner .slide_items .bottom_item .pagination_progress {
    width: 160px;
  }

  /* video section */
  .a_v_start {
    top: 10px;
  }
  section.video_part .wrap {
    padding: 30px 0;
  }
  section.video_part .wrap > h2 {
    font-size: 30px;
    margin-bottom: 35px;
  }
  .video_part .wrap ul {
    flex-flow: column;
  }
  .video_part .image_area {
    width: 100%;
  }
  .video_part .image_area .item1 {
    width: 95%;
    margin: auto;
  }
  .video_part .image_area .item2 {
    display: none;
    /* width: 100px;
    bottom: 35px; */
  }
  .video_part .image_area .item3 {
    display: none;
    /* width: 50px;
    left: 0;
    bottom: 110px; */
  }
  .video_part .image_area .item4 {
    display: none;
    /* width: 30px;
    left: 0;
    bottom: 240px; */
  }
  .video_part .image_area > h3 {
    font-size: 18px;
  }
  .video_part ul > li:last-child {
    width: 100%;
    margin-top: 35px;
  }
  .video_part ul ol {
    width: 100%;
    max-width: 420px;
    min-width: 300px;
  }
  .video_part ul ol li {
    padding: 15px;
  }
  .video_part ul ol li h6 {
    font-size: 16px;
  }
  .video_part ul ol li:nth-child(1) {
    background-size: 80px;
  }
  .video_part ul ol li:nth-child(2) {
    background-size: 70px;
    margin: 15px 0;
  }
  .video_part ul ol li:nth-child(3) {
    background-size: 70px;
  }
  /* Notice section */ 
  section.notice {
    padding: 35px 0;
  }
  .notice .section_title {
    width: 100%;
  }
  .notice .section_title h2 {
    font-size: 30px;
  }
  .notice .notice_swiper {
    width: 80%;
    min-width: 285px;
    padding-top: 30px;
    padding-bottom: 60px;
  }
  .notice_swiper .swiper-slide {
    height: 300px;
    padding: 15px;
    /* min-width: 245px; */
  }
  .notice_swiper .swiper-slide img {
    height: 100px;
  }
  .notice_swiper .swiper-slide h2 {
    font-size: 18px;
  }
  .notice_swiper .swiper-slide h3 {
    font-size: 16px;
    margin-top: 15px;
  }
  .notice_swiper .swiper-slide p {
    margin-top: 15px;
  }
  .notice_swiper .slide_items .swiper-pagination {
    width: 170px;
  }
  .notice .image_area .item1 {
    width: 150px;
    left: -70px;
  }
  .notice .image_area .item2 {
    width: 120px;
    right: -60px;
    bottom: -55px;
  }
  .notice .image_area .item3 {
    top: 30px;
    width: 55px;
    left: 195px;
  }
  /* section :  learning */
  section.learning {
    padding: 35px 0;
  }
  .learning .wrap > h2 {
    font-size: 30px;
  }
  .learning .learning_swiper {
    padding: 35px 0;
  }
  .learning .learning_swiper .swiper-slide {
    flex-flow: column;
  }
  .learning .learning_swiper .swiper-slide .img_part {
    width: 100%;
  }
  .learning .learning_swiper .swiper-slide .text_part {
    width: 100%;
  }
  .learning .learning_swiper .swiper-slide .text_part h3 {
    font-size: 20px;
  }
  .learning .learning_swiper .swiper-slide .text_part p {
    font-size: 14px;
  }
  /* project section */
  section.project {
    padding: 35px 0;
  }
  .project .section_title {
    width: 100%;
  }
  .project .section_title h2 {
    font-size: 30px;
  }
  .project .project_swiper {
    padding-bottom: 60px;
  }
  .project_swiper .swiper-slide img {
    height: 150px;
  }
  .project_swiper .swiper-slide h2 {
    font-size: 18px;
  }
  .project .go_to_top {
    position: absolute;
    right: 15px;
    bottom: 20px;
}
}