/* ========== kv ========== */
.kv_wrapper {
  position: relative;
  max-width: 1080px;
  margin-right: auto;
  margin-left: auto;
  padding-top: 10rem;
}

.kv_line_01 {
  content: "";
  position: absolute;
  top: 4.5%;
  left: 0;
  width: 100vw;
  height: 21rem;
  background: linear-gradient(90deg, rgba(247, 247, 247, 1) 0%, rgba(219, 220, 220, 1) 100%);
  transform-origin: left;
  transform: skewY(17deg);
  opacity: 0.77;
}

.kv_line_01.line_anime_opacity {
  content: "";
  position: absolute;
  top: 4.5%;
  left: 0;
  width: 100vw;
  height: 21rem;
  background: linear-gradient(90deg, rgba(247, 247, 247, 1) 0%, rgba(219, 220, 220, 0) 100%);
  transform-origin: left;
  transform: skewY(17deg);
}

.kv_line_02 {
  content: "";
  position: absolute;
  top: -14.4%;
  right: 0;
  transform-origin: right;
  width: calc(100vw * 0.2);
  height: 1rem;
  background: linear-gradient(90deg, rgba(0, 191, 235, 1) 0%, rgba(0, 71, 149, 1) 100%);
  transform-origin: left;
  transform: skewY(0deg);
  opacity: 0.77;
}

.kv_line_03 {
  content: "";
  position: absolute;
  top: 129.6%;
  left: 0;
  transform-origin: left;
  width: calc(100vw * 0.2);
  height: 0.2rem;
  background: linear-gradient(90deg, rgba(0, 191, 235, 1) 0%, rgba(0, 71, 149, 1) 100%);
  transform-origin: left;
  transform: skewY(0deg);
  opacity: 0.77;
}

.kv_h1 {
  position: absolute;
  top: 160%;
  padding-left: 2rem;
  padding-bottom: 2rem;
  font-size: 5rem;
  font-weight: 100;
  letter-spacing: 0.3em;
  line-height: 1.5;
}

.kv_p {
  display: block;
  height: 3.5rem;
  color: #fff;
  padding-bottom: 0.2rem;
  font-size: 3.1rem;
  font-weight: 400;
  letter-spacing: 1rem;
}

.kv_p:nth-child(2) {
  margin-top: 4rem;
}

.kv_p:nth-child(3) {
  padding-top: 1.1rem;
  margin-left: 8rem;
}

.kv_p span {
  display: inline-block;
  padding-left: 1rem;
  background-color: #004795;
}

.kv_p:nth-child(3) span {
  background-color: #004795;
}

/* kv_cube */
.kv_cube {
  position: absolute;
  top: 160%;
  right: 10%;
  transform: scale(0.8);
}

.cube_wrapper {
  width: 300px;
  position: relative;
  transform-style: preserve-3d;
  margin: auto;
}

.cube-item02 {
  position: relative;
  z-index: 10;
  mix-blend-mode: multiply;
  filter: blur(0px);
}

.cube-item03 {
  position: absolute;
  transform: translate(-50%, -50%) scale(0.4);
  top: -60%;
  left: 90%;
  filter: blur(14px);
  mix-blend-mode: multiply;
}

.cube-container {
  transform: scale(1.5) translate(-50%, -50%);
  width: 200px;
  height: 200px;
  perspective: 1000px;
  margin: auto;
  margin-top: 15rem;
}

.cube {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 5;
  transform-style: preserve-3d;
  animation: animateCube 80s infinite linear;
  animation-timing-function: steps(300);
}

.cube02 {
  transform: scale(0.4);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform-style: preserve-3d;
  animation: animateCube3 60s infinite linear reverse;
}

.cube03 {
  transform: scale(0.4);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform-style: preserve-3d;
  animation: animateCube3 20s infinite linear;
}

.face {
  position: absolute;
  width: 100%;
  height: 100%;
  filter: blur(1px);
}

.cube02 .face {
  animation: faceAnime1 7s infinite linear;
  background-image: url(../img/top_kv_cube_bg_seabed.jpg);
  background-size: 130%;
  opacity: 0.8;
}

.cube_front,
.cube_back,
.cube_left,
.cube_right,
.cube_top,
.cube_bottom {
  backdrop-filter: blur(20px);
  background: rgba(128, 187, 249, 0.1);
}

.cube03 .face {
  animation: faceAnime1 7s infinite linear;
  filter: blur(0px);
  background-image: url(../img/top_kv_cube_bg_seabed.jpg);
}

.cube_front {
  transform: translateZ(100px);
}

.cube_back {
  transform: rotateY(180deg) translateZ(100px);
}

.cube_left {
  transform: rotateY(-90deg) translateZ(100px);
}

.cube_right {
  transform: rotateY(90deg) translateZ(100px);
}

.cube_top {
  transform: rotateX(90deg) translateZ(100px);
}

.cube_bottom {
  transform: rotateX(-90deg) translateZ(100px);
}

@keyframes faceAnime1 {
  0%,
  100% {
    filter: saturate(1) brightness(1);
  }

  50% {
    filter: saturate(1.2) brightness(1.2);
  }
}

@keyframes animateCube {
  0%,
  100% {
    transform: translateZ(100px) rotateY(0deg) rotateX(0deg) rotateZ(0deg) scaleY(1) scaleX(1);
  }

  25% {
    transform: translateZ(50px) rotateY(90deg) rotateX(0deg) rotateZ(45deg) scaleY(1.5) scaleX(0.5);
  }

  50% {
    transform: translateZ(100px) rotateY(180deg) rotateX(0deg) rotateZ(90deg) scaleY(1) scaleX(1);
  }

  75% {
    transform: translateZ(50px) rotateY(270deg) rotateX(0deg) rotateZ(135deg) scaleY(1.5) scaleX(0.5);
  }
}

@keyframes animateCube3 {
  0%,
  100% {
    transform: rotateY(0deg) rotateX(0deg) rotateZ(0deg) scaleY(1) scaleX(1);
  }

  25% {
    transform: rotateY(30deg) rotateX(0deg) rotateZ(80deg) scaleY(0.3) scaleX(0.6);
  }

  50% {
    transform: rotateY(250deg) rotateX(0deg) rotateZ(100deg) scaleY(1.1) scaleX(1.1);
  }

  75% {
    transform: rotateY(180deg) rotateX(0deg) rotateZ(150deg) scaleY(0.8) scaleX(0.8);
  }
}

/* kv_slider */
.kv_sliders_container {
  width: 80rem;
  margin: auto;
  margin-top: 65rem;
}

.kv_sliders_items {
  display: flex !important;
  align-items: center;
}

.kv_sliders_items figure {
  padding-right: 4rem;
}

.kv_sliders_items_title {
  font-family: "Poppins", sans-serif;
  font-weight: 400;
  font-size: 3.9rem;
  color: #004795;
}

.kv_sliders_items_text {
  padding-top: 1rem;
  font-size: 1.8rem;
  line-height: 1.5;
}

.kv_sliders_container .slick-next:before {
  content: ">";
  position: absolute;
  display: flex;
  transform: scaleX(2.6) scaleY(3.8) translateY(-50%);
  top: 100%;
  left: 50%;
  -webkit-text-stroke: 0.04rem #fff;
}

.kv_sliders_container .slick-prev:before {
  content: "<";
  position: absolute;
  display: flex;
  transform: scaleX(2.6) scaleY(3.8) translateY(-50%);
  top: 100%;
  left: -50%;
  -webkit-text-stroke: 0.04rem #fff;
}

.kv_sliders_container .slick-prev:before,
.kv_sliders_container .slick-next:before {
  color: #004795;
  opacity: 1;
}

/* ========== top ========== */

.top_news {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 2rem;
  padding-bottom: 2rem;
  height: 35rem;
  text-align: center;
}

.top_news_h2 {
  padding-top: 8rem;
  font-size: 7rem;
}
@media screen and (min-width: 750px) {
  .top_news_h2 {
    margin-bottom: 40px;
  }
}

.top_news::before {
  position: absolute;
  display: block;
  top: 0%;
  bottom: 0%;
  margin-block: auto;
  content: "";
  width: 100vw;
  height: 40rem;
  background-size: 100%;
  background-color: #004795;
}

.top_news_list {
  position: relative;
  display: flex;
  max-width: calc(100vw * 0.7);
  margin-top: 1rem;
  margin-right: auto;
  margin-left: auto;
  padding-top: 0.4rem;
  padding-left: 4rem;
  padding-bottom: 1rem;
  border-bottom: solid 1px #fff;
  color: #fff;
  font-size: 1.7rem;
  text-align: left;
}

.top_news_date {
  padding-right: 10rem;
}

.top_pro_h2 {
  margin-top: 4rem;
  font-size: 3.2rem;
  line-height: 1.5;
}

.top_pro {
  position: relative;
  max-width: 1080px;
  margin-right: auto;
  margin-left: auto;
  padding-top: 2rem;
  justify-content: space-evenly;
}

.top_pro::after {
  content: "";
  position: absolute;
  text-align: center;
  width: 1px;
  height: 20rem;
  background-color: #000;
}

.top_pro_items {
  width: 40%;
}

.top_pro_items:nth-child(2) {
  padding-bottom: 6.6rem;
}

.top_dclarest {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.top_dclarest .top_border {
  background-color: #000;
  margin-top: 2rem;
  margin-bottom: 12rem;
  width: 108rem;
  height: 0.1rem;
}

.top_dclarest .top_pro_items {
  padding-bottom: 0;
}

.top_dclarest .top_pro_items img {
  width: 37.8rem;
  margin: auto;
}

.top_dclarest p {
  text-align: center;
  line-height: 1.6em;
  margin-top: 3rem;
}

.top_mission {
  position: relative;
  height: 56rem;
  margin-top: 8rem;
  background-image: url(../img/top_mission_bg.png);
  background-repeat: no-repeat;
  background-size: 100vw;
  background-position: center center;
  z-index: 1;
}

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

.top_mission h2 {
  color: #fff;
  padding-top: initial;
  margin-bottom: initial;
}

.top_mission p {
  color: #fff;
  width: calc(1080px * 0.6);
  margin-right: auto;
  margin-left: auto;
  padding-bottom: 2rem;
  text-align: justify;
  line-height: 1.7;
  letter-spacing: 0.2em;
}

.btn_white {
  position: relative;
  display: flex;
  width: 24rem;
  height: 4rem;
  margin-right: auto;
  margin-left: auto;
  border: solid 1px #fff;
  color: #fff;
  font-size: 1.6rem;
  justify-content: center;
  align-items: center;
  letter-spacing: 0.5em;
}

.btn_white::after {
  content: "";
  position: absolute;
  right: -17%;
  width: 8rem;
  height: 1px;
  background-color: #fff;
  transition: 0.4s;
}

.btn_white:hover::after {
  right: -7%;
}

.top_line_b_container {
  position: relative;
}

.top_line_b_01 {
  content: "";
  position: absolute;
  top: 18%;
  left: 0;
  width: 100vw;
  height: 15rem;
  background-color: #e6e7e7;
  transform-origin: left;
  transform: skewY(12deg);
  z-index: 1;
  opacity: 0.77;
}

.top_line_b_02 {
  content: "";
  position: absolute;
  top: 42%;
  left: 0;
  width: 100vw;
  height: 120rem;
  background-color: #004795;
  transform-origin: left;
  transform: skewY(-6deg);
}

.top_works {
  position: relative;
  z-index: 1;
  height: 120rem;
  margin: auto;
  padding-top: 12rem;
  overflow: hidden;
}

.top_works h2 {
  color: #fff;
}

.top_works_container {
  position: relative;
  max-width: 1080px;
  margin: auto;
}

.top_works_items {
  position: absolute;
  width: 50rem;
  padding: 4rem;
  filter: drop-shadow(5px 6px 3px rgba(0, 0, 0, 0.4));
  background-color: rgba(255, 255, 255, 0.9);
}

.top_works_items.item01 {
  z-index: 1;
  top: calc(1080px * 0.1);
  left: 50%;
}

.top_works_items.item02 {
  position: absolute;
  top: calc(1080px * 0.5);
  left: 25%;
}

.top_works_items_img {
  position: absolute;
  width: 100%;
}

.top_works_items_img.image01 {
  left: -10%;
}

.top_works_items_img.image02 {
  top: calc(1080px * 0.45);
  right: -45%;
}

.top_works_items_img.image01 span {
  display: block;
  height: 37rem;
  background-size: contain;
  background-repeat: no-repeat;
  background-image: url(../img/top_work_img01.png);
}

.top_works_items_img.image02 span {
  display: block;
  height: 37rem;
  background-size: contain;
  background-repeat: no-repeat;
  background-image: url(../img/top_work_img02.png);
}

.top_works_items_h3 {
  font-weight: 600;
  font-size: 2.5rem;
  color: #000;
  letter-spacing: 0.2em;
}

.top_works_items_title {
  font-family: "Poppins", sans-serif;
  font-weight: 500;
  font-size: 4.7rem;
  color: #004795;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.top_works_items_text {
  font-size: 1.7rem;
  line-height: 1.7;
  padding-bottom: 2rem;
}

.btn_blk {
  position: relative;
  display: flex;
  width: 24rem;
  height: 4rem;
  margin-right: auto;
  margin-left: auto;
  border: solid 1px #000;
  color: #000;
  font-size: 1.6rem;
  justify-content: center;
  align-items: center;
  letter-spacing: 0.5em;
}

.btn_blk::after {
  content: "";
  position: absolute;
  right: -17%;
  width: 8rem;
  height: 1px;
  background-color: #000;
  transition: 0.4s;
}

.btn_blk:hover::after {
  right: -7%;
}

.top_footer {
  position: relative;
  max-width: 1080px;
  margin-right: auto;
  margin-left: auto;
  padding-top: 15rem;
  padding-bottom: 4rem;
  border-top: initial;
}

.top_footer_container {
  position: relative;
  margin: auto;
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.top_footer_container::after {
  content: "";
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 42.6%;
  width: 1px;
  height: 5rem;
  background-color: #000;
}

.top_footer_container.flex_wrap {
  align-items: center;
  justify-content: center;
}

.top_footer_item {
  width: 45%;
  line-height: 1.3;
  padding-right: 1rem;
  padding-left: 1rem;
}

.top_footer_item:first-child {
  width: 30%;
}

.top_footer_list_container {
  width: 73%;
  margin-right: auto;
  margin-left: auto;
  justify-content: center;
  align-items: center;
}

.top_footer_list_item {
  width: 100%;
  text-align: center;
  position: relative;
  padding: 3rem 4rem;
  border: solid 1px #000;
  border-bottom: solid 8px #004795;
}

.top_footer_list_item:nth-child(2) {
  margin-right: 1rem;
  margin-left: 1rem;
}

.top_footer_list_item_title {
  font-family: "Poppins", sans-serif;
  font-weight: 400;
  font-size: 2.8rem;
  color: #004795;
}

.top_footer_list_item_text {
  font-size: 1.5rem;
  letter-spacing: 0.2em;
}

/* ========== spデザイン ========== */

@media screen and (max-width: 750px) {
  .kv_h1 {
    width: 100%;
    transform: translate(-50%);
    left: 60%;
  }

  .kv_p:nth-child(2) {
    margin-top: 2rem;
  }

  .kv_cube {
    top: 320%;
    transform: scale(0.35);
    right: -5%;
  }

  .kv_line_01 {
    top: 5.5%;
  }

  .kv_sliders_items {
    display: block !important;
  }

  .kv_sliders_container {
    width: 78%;
    margin-top: 75rem;
  }

  .kv_sliders_items figure {
    padding-right: 0;
  }

  .slick-prev:before {
    top: 20%;
    left: 0%;
    -webkit-text-stroke: 0.1rem #fff;
  }

  .slick-next:before {
    top: 20%;
    left: 60%;
    -webkit-text-stroke: 0.1rem #fff;
  }

  .kv_sliders_items_title {
    text-align: center;
    font-size: 4.6rem;
    margin-top: 2rem;
  }

  .kv_sliders_items_text {
    text-align: center;
    font-size: 2.4rem;
  }

  .top_news {
    padding-bottom: 50rem;
    background-color: #004795;
  }

  .top_news::before {
    display: none;
  }

  .top_news ul {
    position: absolute;
    top: 49%;
    transform: translateY(-50%);
  }

  .top_news_list {
    display: flex;
    max-width: calc(100vw * 0.9);
    border-bottom: solid 0.05rem #fff;
    padding-bottom: 1.5rem;
  }

  .top_news_date {
    font-size: 2.2rem;
    display: block;
  }

  .top_news_title {
    display: block;
    font-size: 2.2rem;
  }

  .top_news {
    padding-bottom: 58rem;
  }

  .top_news::before {
    height: 50rem;
  }

  .top_pro {
    align-items: center;
    padding-bottom: 4rem;
  }

  .top_pro_h2 {
    font-size: 4.7rem;
  }

  .top_pro::after {
    top: -10%;
    height: 60rem;
    transform: rotate(90deg);
  }

  .top_pro_items {
    width: 60%;
  }

  .top_pro_items:nth-child(2) {
    padding-top: 12rem;
    padding-bottom: 1rem;
  }

  .top_dclarest .top_border {
    margin-bottom: 2rem;
    width: 55.2rem;
  }

  .top_dclarest .top_pro_items {
    padding-top: 8rem;
    padding-bottom: 3rem;
  }

  .top_dclarest p {
    margin-top: 0;
    margin-bottom: 3rem;
  }

  .top_mission {
    margin-top: 4rem;
    background-size: cover;
  }

  .top_mission h2 {
    font-size: 7rem;
    padding-bottom: 2rem;
  }

  .top_mission p {
    width: calc(750px * 0.4);
  }

  .btn_white,
  .btn_blk {
    width: 38rem;
    height: 7rem;
    font-size: 2.4rem;
    margin-top: 1rem;
  }

  .top_line_b_01 {
    top: 21%;
  }

  .top_line_b_02 {
    top: 35%;
    transform: skewY(-12deg);
    height: 173rem;
  }

  .top_works {
    padding-top: 19rem;
    height: 190rem;
  }

  .top_works_items_img.image01 {
    left: 0;
  }

  .top_works_items {
    width: 60rem;
  }

  .top_works_items.item01 {
    transform: translateX(-50%);
  }

  .top_works_items_h3 {
    font-size: 2.7rem;
  }

  .top_works_items_title {
    font-size: 4.9rem;
  }

  .top_works_items_text {
    font-size: 2.4rem;
  }

  .top_works_items.item02 {
    position: absolute;
    top: calc(1080px * 0.5);
    left: 25%;
  }

  .top_works_items_img.image02 {
    top: calc(750px * 0.5);
    right: 0;
  }

  .top_works_items_img.image02 span {
    background-size: 150%;
    background-position: -13rem;
  }

  .top_works_items.item02 {
    position: absolute;
    top: calc(1080px * 0.5);
    left: 50%;
    transform: translateX(-50%);
  }

  .top_footer {
    padding-top: 15rem;
  }

  .top_footer_item:first-child {
    width: 60%;
  }

  .top_footer_container::after {
    display: none;
  }

  .top_footer_item {
    width: 100%;
    text-align: center;
    line-height: 1.5;
    padding-top: 2rem;
  }

  .top_footer_list_item:nth-child(2) {
    margin-top: 2rem;
    margin-bottom: 2rem;
  }
}

/* ========== animation ========== */

.fadeIn {
  transition: 0.7s;
  opacity: 0;
}

.lineIn {
  transition: 0.7s;
  width: 0vw;
}

.active {
  opacity: 1;
}

.activeLine {
  width: 100vw;
}

/* ========== / top ========== */
.top_footer_item img {
  width: 80%;
  margin-inline: auto;
}