@charset "UTF-8";
/* CSS Document */

.sawarabi {
  font-family: "Sawarabi Gothic", sans-serif;
  font-weight: 400;
}

.bg_id_gray {
  background-color: var(--id_gray);
}

.bg_id_black {
  background-color: var(--id_black);
}

.font_id_black {
  color: var(--id_black);
}

.font_id_red {
  color: var(--id_red);
}

body {
  color: var(--id_black);
}

header.common {
  z-index: 999;
  position: relative;
}

/* hero */
main section#hero {
  width: 100%;
  max-width: 450px;
  margin-inline: auto;
}

main section#hero .hero_bg {
  position: relative;
  width: 100%;
  max-width: 450px;
  aspect-ratio: 450/1039.62;
  margin-top: -80px;
  overflow: hidden;
  opacity: 1;
  z-index: 0;
}

main section#hero .hero_bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/inde_b/idb_hero_bg.png") no-repeat center / 100%;
  transform-origin: center;
  transform: scale(1.08);
  will-change: transform;
  backface-visibility: hidden;
}

@keyframes hero-bg-scale-in {
  from {
    transform: scale(1.08);
  }
  to {
    transform: scale(1);
  }
}

main section#hero .hero_bg.scrollin::before {
  animation: hero-bg-scale-in 1.2s ease-out forwards;
}

.hero_bg_inner {
  position: absolute;
  inset: 0;
  text-align: center;
  display: grid;
  justify-items: center;
  align-content: start;
  z-index: 1;
  margin-top: clamp(93px, calc(29.09vw - 5.9px), 125px);
}

#inde_b h1 {
  margin: 0;
  text-align: center;
  display: grid;
  gap: 0.83em;
  font-size: clamp(25px, calc(30px + (100vw - 390px) * 0.092), 34.6px);
  justify-items: center;
}

h1 .label {
  display: inline-block;
  padding: 0.31em 0.38em 0.45em 0.45em;
  line-height: 1.16;
  letter-spacing: 0.1em;
  border: 1px solid var(--id_black);
  transition-delay: 0.5s;
}

h1 .label:not(.black_content) {
  width: 5.1em;
}

h1 span.font_white {
  transition-delay: 1s;
}

h1 .label.black_content:first-child {
  margin-bottom: 15px;
}

h1 .label.black_content:last-child {
  padding: 0.31em 0.38em 0.45em 0.65em;
}

h1 span.calc {
  width: 30px;
  height: 30px;
  background: url("../img/inde_b/idb_times.png") no-repeat center / contain;
  transition-delay: 0.5s;
}

h1 span.calc.equal {
  width: 21px;
  height: 31px;
  background: url("../img/inde_b/idb_equal.png") no-repeat center / contain;
}

#hero .dept_name {
  text-align: center;
  line-height: 1.6;
  margin-bottom: 50px;
  margin-top: calc(57px + (100vw - 340px) * (15 / 50));
}

#hero .dept_name span.dept {
  font-size: 18px;
  letter-spacing: 0.08em;
}

#hero .dept_name span.major {
  font-size: 25px;
  letter-spacing: 0.12em;
  display: block;
}

.scroll_line_wrap {
  position: relative;
  height: 98px;
  width: 1px;
  overflow: hidden;
  margin-top: clamp(-42px, calc(-30px - (100vw - 340px) * 12 / 110), -30px);
  margin-inline: auto;
}

.scroll_line_wrap span.scroll_line {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%) scaleY(1);
  transform-origin: top;
  width: 1px;
  height: 160px;
  background: var(--id_black);
  animation: scroll-line-move 3s ease-in-out infinite;
}

@keyframes scroll-line-move {
  0% {
    transform: translate(-50%, 0) scaleY(1);
    opacity: 1;
  }

  70% {
    transform: translate(-50%, 160px) scaleY(1);
    opacity: 1;
  }

  100% {
    transform: translate(-50%, 160px) scaleY(0);
    opacity: 0;
  }
}

.hero_images {
  width: 100%;
  max-width: 450px;
  height: clamp(495px, calc(570px + (100vw - 390px) * 1.48), 658px);
  max-height: 658px;
  margin-inline: auto;
  margin-top: 40px;
  position: relative;
}

.hero_images img {
  position: absolute;
  height: auto;
}

.hero_images img.hero_img01 {
  width: 51.5%;
  aspect-ratio: 200/155;
  top: 0;
  left: 15.8%;
  z-index: 1;
}

.hero_images img.hero_img02 {
  width: 67.2%;
  aspect-ratio: 262/220;
  right: 0;
  top: 24.7%;
  z-index: 0;
}

.hero_images img.hero_img03 {
  width: 46.6%;
  aspect-ratio: 182/149;
  bottom: 20%;
  left: 4.8%;
  z-index: 1;
}
.hero_images img.hero_img04 {
  width: 46.6%;
  aspect-ratio: 182/141;
  bottom: 0;
  right: 12.9%;
  z-index: 0;
}

.dept_area_inner {
  width: 320px;
  margin-inline: auto;
  margin-top: 60px;
}

#hero .dept_area h2 {
  width: 320px;
  margin-inline: auto;
  line-height: 1;
  font-size: 24px;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 20px;
  text-align: left;
}

#hero h2 span {
  display: inline-block;
  padding: 0.13em 0.2em 0.23em 0.4em;
  background-color: var(--id_black);
  margin-bottom: 18px;
}

div.index ul li a {
  border: 1px solid var(--id_black);
}

div.index ul li a::after {
  background: url(../img/inde_b/idb_arrow_circle.png) no-repeat center / contain;
}

/* reason */
.round_bg::before {
  background: var(--id_black);
  z-index: 0;
}

.reason_content {
  z-index: 2;
  position: relative;
}

.reason_content.content01 {
  padding-bottom: 50px;
}

p.reason_text {
  margin-block: 30px 35px;
  letter-spacing: 0.065em;
}

.reason_content.content02 {
  margin-bottom: 0px;
}

summary.reason_acc_label {
  height: auto;
  padding-top: 0px;
}

.reason_acc_card {
  height: auto;
  padding-bottom: 60px;
}

.reason_acc_card img {
  width: 320px;
  height: 226px;
  border-radius: 10px 10px 0 0;
}

.reason_acc_card img.company_logo {
  width: 204px;
  height: 27.7px;
  border-radius: 0;
  margin-inline: auto;
  margin-block: 20px 5px;
}

p.reason_acc_title {
  color: var(--id_black);
  margin-top: 30px;
  letter-spacing: 0.07em;
}

span.acc_arrow::after {
  background: url("../img/inde_b/idb_arrow_acc.png") no-repeat center / contain;
}

a.reason_cta {
  margin-top: 50px;
  padding: 18px 22px 19px 22px;
}

/* reason acc contents */

.reason_acc_contents_inner {
  width: 260px;
}

p.reason_acc_text {
  margin-top: 0;
}

article.gray_area {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

article.gray_area .gray_box {
  padding-block: 30px 16px;
  padding-inline: 28px;
  border-radius: 10px;
}

article.gray_area .gray_box ul {
  width: 204px;
  margin-inline: auto;
}

article.gray_area .gray_box ul li {
  display: flex;
  justify-content: space-between;
  line-height: 1.87;
  letter-spacing: 0.08em;
  align-items: center;
}

article.gray_area .gray_box ul li p {
  position: relative;
  margin-left: 1.1em;
  letter-spacing: 0.05em;
}

article.gray_area .gray_box ul li p::before {
  position: absolute;
  content: "●";
  width: 1em;
  height: 1em;
  top: 0;
  left: -1.05em;
}

article.gray_area .gray_box ul li span.app_icon {
  width: 25px;
  height: 24px;
  margin-block: 3px;
  display: block;
}

article.gray_area .gray_box ul li span.app_icon.ps {
  background: url("../img/inde_b/idb_ps.png") no-repeat center / contain;
}

article.gray_area .gray_box ul li span.app_icon.ai {
  background: url("../img/inde_b/idb_ai.png") no-repeat center / contain;
}

article.gray_area .gray_box ul li span.app_icon.ex {
  background: url("../img/inde_b/idb_ex.png") no-repeat center / contain;
}

article.gray_area .gray_box ul li span.app_icon.lr {
  background: url("../img/inde_b/idb_lr.png") no-repeat center / contain;
}

article.gray_area .gray_box ul li span.app_icon.pr {
  background: url("../img/inde_b/idb_pr.png") no-repeat center / contain;
}

article.gray_area .gray_box ul li span.app_icon.ac {
  background: url("../img/inde_b/idb_ac.png") no-repeat center / contain;
}

article.gray_area .gray_box p {
  line-height: 1.87;
  letter-spacing: 0.05em;
  text-align: center;
}

article.gray_area .gray_box p.etc {
  text-align: right;
}

article.gray_area .gray_box.box2 {
  position: relative;
  padding-bottom: 30px;
}

article.gray_area .gray_box.box2::before {
  position: absolute;
  content: "";
  width: 40px;
  height: 40px;
  background: url("../img/inde_b/idb_plus_circle.png") no-repeat center /
    contain;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
}

/* features*/

#features h2 span,
#future h2 span {
  border-bottom: 3px solid var(--id_black);
}

.features_content.features_content_01 {
  border-bottom: 1px solid var(--id_black);
  padding-bottom: 50px;
}

/* features acc */

#features .features_content_02 h3 {
  letter-spacing: 0.05em;
}

summary.features_acc_label span.acc_more_button {
  border: 1px solid var(--id_black);
}

p.features_acc_text {
  letter-spacing: 0.026em;
}

.field_3,
.cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cards {
  margin-bottom: 30px;
}

.features_acc_box,
.features_acc_card {
  width: 320px;
  margin-inline: auto;
  padding: 30px;
  border-radius: 10px;
}

.features_acc_card {
  padding: 0 0 30px 0;
  background: #fff;
}

.features_acc_card .card_inner {
  width: 260px;
  margin-inline: auto;
  text-align: center;
}

h4.features_acc_box_label {
  width: 260px;
  height: 44px;
  padding: 10px 10px 11px 10px;
  color: #fff;
  background-color: var(--id_black);
  display: grid;
  align-content: center;
  margin-inline: auto;
  text-align: center;
  margin-bottom: 22px;
  font-size: 17px;
  font-weight: var(--font_bold);
  line-height: 1.58;
  letter-spacing: 0.08em;
}

.box_lead_list {
  display: grid;
  grid-template-columns: repeat(2, max-content);

  gap: 10px;

  font-weight: var(--font_medium);
  line-height: 1.5;
  font-size: 14px;
  letter-spacing: 0.06em;
  margin-bottom: 15px;
  justify-content: center;
}

.box_lead_list span {
  font-size: 1em;
  padding: 9px 15px 9px 15px;
  background-color: var(--gl_yellow);
  height: 39px;
  align-items: center;
  border-radius: 25px;
  display: inline-block;
  white-space: nowrap;
  text-align: center;
}

.box_lead_list span:nth-child(3) {
  grid-column: 1 / -1;
  justify-self: center;
}

.features_acc_box .box_text {
  font-weight: var(--font_bold);
  line-height: 2;
  letter-spacing: 0.1em;
  text-align: justify;
}

.features_acc_box span.box_arrow {
  width: 32.332px;
  height: 32px;
  background: url("../img/inde_b/idb_arrow_black.png") no-repeat center /
    contain;
  margin-inline: auto;
  margin-block: 16px 5px;
  display: block;
}

.features_acc_box p.path {
  text-align: center;
  font-feature-settings: "palt" on;
  font-size: 18px;
  font-weight: var(--font_bold);
  line-height: 2.16;
  letter-spacing: 0.1em;
  width: 174px;
  margin-inline: auto;
}

.features_acc_box p.path span.underline {
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1.8px
    no-repeat;
  padding-bottom: 4.5px;
  display: inline-block;
  line-height: 1.1;
}

.features_acc_box p.path span.underline:nth-last-of-type(2) {
  margin-left: 1.3em;
}

.features_acc_card img {
  width: 320px;
  height: 226px;
  border-radius: 10px 10px 0 0;
}

.features_acc_subtitle {
  font-size: 14px;
  line-height: 1;
  letter-spacing: 0.1em;
  height: 24px;
  padding: 4.5px 10px 4px 12px;
  background: var(--id_black);
  margin-block: 30px 20px;
  display: inline-block;
}

.features_acc_title {
  font-size: 21px;
  font-weight: var(--font_bold);
  line-height: 1.57;
  letter-spacing: 0.1em;
}

.features_acc_card img.company_logo {
  width: 177px;
  height: 37px;
  margin: 20px auto 25px;
}

.features_acc_card.card2 img.company_logo {
  width: 166px;
  height: 26.871px;
}

.features_acc_card p.card_text {
  font-weight: var(--font_bold);
  line-height: 2;
  letter-spacing: 0.029em;
  text-align: justify;
}

a.features_acc_cta {
  border: 1px solid var(--id_black);
  color: var(--id_black);
  font-size: 15px;
  padding: 18px 36px 19px 36px;
}

/* future */
#future h3 {
  background-color: var(--id_black);
}

.future_content ul li::before {
  color: var(--id_red);
}

.graph_balloon {
  border: 1px solid var(--id_black);
}

.graph_balloon_value {
  color: var(--id_black);
}

.graph_balloon.balloon_3 {
  left: 175px;
  border-radius: 0px 20px 20px 20px;
  background-color: var(--gl_yellow);
}

.company h4 {
  border-top: 1px solid var(--id_black);
  border-bottom: 1px solid var(--id_black);
}

/* interview */

@media (min-width: 390px) {
  #hero .dept_name {
    margin-top: calc(72px + (100vw - 390px) * (28 / 60));
  }
}

@media (min-width: 451px) {
  .layout_center {
    border-right: 1px solid var(--id_black);
    border-left: 1px solid var(--id_black);
  }

  #hero .dept_name {
    margin-top: 100px;
  }
}

@media (min-width: 1120px) {
  header.common {
    position: fixed;
    z-index: 999;
  }

  main section#hero .hero_bg {
    margin-top: -21px;
  }
}

@media (hover: hover) and (pointer: fine) {
  a.reason_cta:hover {
    color: var(--id_black);
  }

  summary.features_acc_label span.acc_more_button:hover,
  a.features_acc_cta:hover {
    background: var(--id_black);
  }
}