@charset "UTF-8";
.hero {
  position: relative;
  width: 100%;
  height: 500px;
  background: #191616;
  overflow: visible;
  z-index: 1;
}
@media (max-width: 1023px) {
  .hero {
    height: auto;
    min-height: 400px;
  }
}
@media (max-width: 767px) {
  .hero {
    min-height: 420px;
  }
}
.hero__side {
  position: absolute;
  top: 0;
  width: 77px;
  height: 500px;
  background: #191616;
  overflow: visible;
  z-index: 2;
}
.hero__side--left {
  left: 0;
}
.hero__side--left .hero__arrow {
  left: 77px;
}
.hero__side--right {
  right: 0;
}
.hero__side--right .hero__arrow {
  right: 77px;
}
@media (max-width: 1023px) {
  .hero__side {
    display: none;
  }
}
.hero__arrow {
  position: absolute;
  top: 217px;
  width: 34px;
  height: 65px;
  border: 0;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.22);
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.hero__slides {
  position: relative;
  width: 100%;
  height: 100%;
}
.hero__slides .hero__slide {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  max-width: 1766px;
  margin: 0 auto;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 600ms ease, visibility 0ms linear 600ms;
}
.hero__slides .hero__slide--active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0ms;
}
@media (max-width: 1023px) {
  .hero__slides .hero__slide--active {
    position: relative;
    visibility: visible;
  }
}
.hero__slides .hero__slide .hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}
.hero__inner {
  position: relative;
  height: 100%;
  padding-top: 20px;
  z-index: 1;
}
.hero__inner .content-1140 {
  position: relative;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 10px;
  margin: 0 auto;
}
@media (max-width: 1023px) {
  .hero__inner {
    height: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .hero__inner .content-1140 {
    height: auto;
    display: block;
  }
}
.hero__product-link {
  display: inline-block;
  line-height: 0;
  text-decoration: none;
  cursor: pointer;
}
.hero__product-link .hero__product-image {
  display: block;
}
@media (max-width: 1023px) {
  .hero__product-link {
    margin: 0 auto;
  }
}
.hero__product-image {
  position: static;
  z-index: 1;
  left: auto;
  top: auto;
  width: 331px;
  height: 459px;
  background: transparent;
}
@media (max-width: 1023px) {
  .hero__product-image {
    position: static;
    margin: 0 auto;
    width: 200px;
    height: 280px;
  }
}
@media (max-width: 767px) {
  .hero__product-image {
    width: 160px;
    height: 220px;
  }
}
.hero__summary {
  position: static;
  left: auto;
  top: auto;
  margin-top: 79px;
  width: 726px;
  max-height: calc(500px - 20px - 79px - 24px);
  overflow-y: auto;
  padding-right: 10px;
  text-align: left;
  color: #ffffff;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.4) transparent;
}
.hero__summary::-webkit-scrollbar {
  width: 4px;
}
.hero__summary::-webkit-scrollbar-track {
  background: transparent;
}
.hero__summary::-webkit-scrollbar-thumb {
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.4);
}
.hero__summary h1 {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: 2.72px;
}
@media (max-width: 767px) {
  .hero__summary h1 {
    font-size: 24px;
    letter-spacing: 1.5px;
  }
}
.hero__summary h2 {
  margin-top: 24px;
}
@media (max-width: 1023px) {
  .hero__summary {
    position: static;
    width: 100%;
    margin-top: 20px;
    max-height: calc(400px - 20px * 2 - 20px);
    overflow-y: auto;
    padding-right: 8px;
  }
}
@media (max-width: 767px) {
  .hero__summary {
    margin-top: 32px;
    max-height: calc(300px - 20px * 2 - 32px);
  }
}
.hero__lead {
  margin-top: 24px;
  font-size: 27px;
  font-weight: 700;
  letter-spacing: 1.08px;
}
@media (max-width: 767px) {
  .hero__lead {
    font-size: 20px;
    letter-spacing: 0.8px;
    margin-top: 20px;
  }
}
.hero__desc {
  margin-top: 24px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.8px;
  line-height: 1.7;
  text-align: left;
}
@media (max-width: 767px) {
  .hero__desc {
    font-size: 16px;
    letter-spacing: 0.64px;
    margin-top: 20px;
  }
}
.hero__tabs {
  position: absolute;
  left: 50%;
  bottom: -57px;
  transform: translateX(-50%);
  display: flex;
  gap: 15px;
  z-index: 3;
}
@media (max-width: 1023px) {
  .hero__tabs {
    position: relative;
    left: auto;
    bottom: auto;
    transform: translateY(50%);
    width: 100%;
    margin-top: 20px;
  }
}
@media (max-width: 767px) {
  .hero__tabs {
    flex-direction: column;
    justify-content: flex-start;
    width: 100%;
    background: #000000;
    padding: 16px;
    transform: none;
    margin-top: 0;
    gap: 8px;
    min-height: 140px;
  }
}
.hero__tab {
  height: 35px;
  background: #d9d9d9;
  color: #8f8f8f;
  border: 1px solid #d9d9d9;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.56px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0 15px;
}
@media (max-width: 1023px) {
  .hero__tab {
    flex: 1;
    width: auto;
  }
}
@media (max-width: 767px) {
  .hero__tab {
    flex: none;
    width: 100%;
    font-size: 12px;
    padding: 0 8px;
    height: 32px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 100%;
  }
}
.hero__tab:not(.hero__tab--active) {
  background: #d9d9d9;
  border-color: #d9d9d9;
}
.hero__tab--active {
  color: #1a1a1a;
  background: #ffffff;
  border-color: #d9d9d9;
}

.textbook {
  margin-top: 48px;
  background: #f4f5f6;
  padding: 48px 0;
}
@media (max-width: 1023px) {
  .textbook {
    margin-top: 40px;
    padding: 40px 0;
  }
}
@media (max-width: 767px) {
  .textbook {
    margin-top: 32px;
    padding: 32px 0;
  }
}
.textbook h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 1.2px;
}
@media (max-width: 767px) {
  .textbook h2 {
    font-size: 24px;
    letter-spacing: 0.96px;
  }
}

.textbook-block {
  margin-top: 60px;
}
@media (max-width: 1023px) {
  .textbook-block {
    margin-top: 50px;
  }
}
@media (max-width: 767px) {
  .textbook-block {
    margin-top: 32px;
  }
}
.textbook-block__heading h3 {
  font-size: 27px;
  font-weight: 500;
  letter-spacing: 1px;
}
@media (max-width: 767px) {
  .textbook-block__heading h3 {
    font-size: 22px;
  }
}
.textbook-block hr {
  margin: 20px 0 0;
  border: 0;
  overflow: visible;
  border-top: 1px solid #d0d0d0;
  position: relative;
}
.textbook-block hr::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 220px;
  height: 5px;
  background: #003990;
}

.textbook-cards {
  margin-top: 56px;
  display: grid;
  gap: 36px;
}
@media (max-width: 1023px) {
  .textbook-cards {
    margin-top: 50px;
    gap: 24px;
  }
}
.textbook-cards--three {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 1023px) {
  .textbook-cards--three {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 767px) {
  .textbook-cards--three {
    grid-template-columns: 1fr;
  }
}

.textbook-card {
  width: 100%;
}
.textbook-card__image {
  width: 100%;
  height: 250px;
  background: #5f7481;
  background-size: cover;
  background-position: center;
  color: #ffffff;
  text-decoration: none;
  font-size: 27px;
  font-weight: 500;
  letter-spacing: 1px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  box-shadow: inset 0 0 0 1000px rgba(0, 0, 0, 0.3);
  transition: box-shadow 0.3s ease;
}
.textbook-card__image:hover {
  box-shadow: none;
}
@media (max-width: 767px) {
  .textbook-card__image {
    height: 200px;
  }
}
.textbook-card ul {
  margin-top: 26px;
}
.textbook-card li {
  margin-top: 8px;
}
.textbook-card li:first-child {
  margin-top: 0;
}
.textbook-card a:not(.textbook-card__image) {
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.5px;
  line-height: 1.5;
  transition: opacity 0.3s ease;
}
.textbook-card a:not(.textbook-card__image):hover {
  opacity: 0.7;
}
.textbook-card:has(.more-link:hover) .textbook-card__image {
  box-shadow: none;
}

.top-page {
  width: 100%;
  background-image: url("../images/top-bg.svg");
  background-size: 100% auto;
  background-repeat: no-repeat;
  background-position: center top;
  max-width: 1920px;
  margin: 0 auto;
}

.top-whitepaper {
  position: relative;
  overflow: hidden;
  background: #f4f5f6;
  padding: 48px 0;
}
.top-whitepaper::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background: inherit;
  z-index: 0;
}
@media (max-width: 1023px) {
  .top-whitepaper {
    padding: 40px 0;
  }
}
@media (max-width: 767px) {
  .top-whitepaper {
    padding: 32px 0;
  }
}
.top-whitepaper__inner {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 40px;
}
@media (max-width: 1023px) {
  .top-whitepaper__inner {
    flex-direction: column;
    gap: 40px;
  }
}
@media (max-width: 767px) {
  .top-whitepaper__inner {
    gap: 24px;
  }
}
.top-whitepaper__left {
  flex: 0 0 483px;
}
@media (max-width: 1023px) {
  .top-whitepaper__left {
    flex: none;
    width: 100%;
  }
}
.top-whitepaper__right {
  flex: 1;
}
.top-whitepaper__heading, .top-whitepaper__form-heading {
  margin-bottom: 20px;
}
.top-whitepaper__title, .top-whitepaper__form-title {
  font-size: 27px;
  font-weight: 500;
  letter-spacing: 1px;
}
@media (max-width: 767px) {
  .top-whitepaper__title, .top-whitepaper__form-title {
    font-size: 22px;
  }
}
.top-whitepaper__divider {
  position: relative;
  width: 100%;
  margin-top: 12px;
  border-top: 1px solid #d0d0d0;
}
.top-whitepaper__divider-accent {
  position: absolute;
  top: -2px;
  left: 0;
  width: 224px;
  height: 3px;
  background: #003990;
}
.top-whitepaper__highlights-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.top-whitepaper__highlights-list {
  margin-top: 6px;
  list-style: none;
  padding-left: 0;
  font-size: 16px;
  font-weight: normal;
  letter-spacing: 0.5px;
  line-height: 1.6875;
}
.top-whitepaper__highlights-list li {
  position: relative;
  padding-left: 17px;
}
.top-whitepaper__highlights-list li::before {
  content: "・";
  display: inline;
  position: absolute;
  left: 0;
}
.top-whitepaper__cover {
  margin-top: 30px;
  width: 418px;
  max-width: 100%;
}
.top-whitepaper__cover img {
  width: 100%;
  height: auto;
  display: block;
}
.top-whitepaper__cover[role=img] {
  height: 199px;
  background: #d9d9d9;
}
@media (max-width: 767px) {
  .top-whitepaper__cover {
    width: 100%;
  }
}
.top-whitepaper__note {
  margin-top: 22px;
  font-size: 16px;
  font-weight: normal;
  letter-spacing: 0.5px;
  line-height: 1.6875;
}
.top-whitepaper__note-icon {
  display: inline-block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 0 6px 8px;
  border-color: transparent transparent transparent #1a1a1a;
  margin-right: 8px;
  vertical-align: middle;
}
.top-whitepaper__form-area {
  margin-top: 20px;
}
.top-whitepaper__form-placeholder {
  padding: 60px 20px;
  border: 2px dashed #d0d0d0;
  background: #ffffff;
  text-align: center;
  font-size: 16px;
  color: #8f8f8f;
  border-radius: 8px;
  min-height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
}
@media (max-width: 767px) {
  .top-whitepaper__form-placeholder {
    padding: 32px 16px;
    border: 2px dashed #d0d0d0;
    background: #ffffff;
    text-align: center;
    font-size: 16px;
    color: #8f8f8f;
    border-radius: 8px;
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}