.index_main {
  position: relative;
  overflow: hidden;
  background-color: #e6f5ff;
}
.index_main h1 {
  position: relative;
  z-index: 6;
  color: #2278cc;
  font-weight: normal;
  font-weight: bold;
  line-height: 1.5;
}
.index_main h1 span {
  display: block;
  color: #000000;
  font-weight: normal;
}
.index_main .ff_en {
  position: absolute;
  top: 50%;
  right: 0;
  opacity: 0.75;
  transform: translateY(-50%);
  color: #ffffff;
  font-weight: 300;
  text-align: right;
  white-space: nowrap;
}
@media screen and (min-width: 768px), print {
  .index_main {
    height: 560px;
  }
  .index_main::before, .index_main::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 2;
    background-position: 50%;
    background-repeat: no-repeat;
    content: "";
  }
  .index_main::before {
    background-image: url(../images/index_main_bg_line.png);
  }
  .index_main::after {
    z-index: 4;
    opacity: 0.7;
    background-image: url(../images/index_main_bg.png);
    mix-blend-mode: multiply;
  }
  .index_main > div::before {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
    width: 40%;
    background: linear-gradient(to right, rgba(230, 245, 255, 0) 0%, rgba(230, 245, 255, 0.8) 100%);
    content: "";
  }
  .index_main > div::after {
    position: absolute;
    top: 35px;
    right: 50%;
    z-index: 6;
    width: 550px;
    height: 370px;
    margin-right: 90px;
    background: url(../images/index_main_ico.png) no-repeat;
    content: "";
  }
  .index_main h1 {
    position: absolute;
    top: 28%;
    left: 50%;
    font-size: 5rem;
  }
  .index_main h1 span {
    width: fit-content;
    margin: 20px 0 0 auto;
    font-size: 2rem;
    line-height: 2;
  }
  .index_main .ff_en {
    font-size: 19.2rem;
    line-height: 0.9;
  }
}
@media screen and (max-width: 767px) {
  .index_main {
    height: 320px;
  }
  .index_main::before, .index_main::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 2;
    height: 150px;
    background-position: 50%;
    background-repeat: no-repeat;
    content: "";
  }
  .index_main::before {
    background-image: url(../images/index_main_bg_sp.png);
    background-position: 100%;
    background-size: 750px;
    mix-blend-mode: multiply;
  }
  .index_main::after {
    z-index: 4;
    background-image: url(../images/index_main_ico_sp.png);
    background-size: 375px;
  }
  .index_main h1 {
    padding-top: 24px;
    font-size: 2.4rem;
  }
  .index_main h1 span {
    margin-top: 20px;
    font-size: 1.2rem;
  }
  .index_main .ff_en {
    right: -10px;
    font-size: 8rem;
    line-height: 1;
  }
}

.index_title {
  font-weight: bold;
  line-height: 1.5;
  text-align: center;
}
.index_title > span {
  color: #55b2f3;
}
@media screen and (min-width: 768px), print {
  .index_title {
    margin-bottom: 32px;
    font-size: 3.2rem;
  }
}
@media screen and (max-width: 767px) {
  .index_title {
    margin-bottom: 20px;
    font-size: 2rem;
  }
}

.index_introduction {
  background-color: #edf7fe;
  padding-block: 1em 2em;
}
.index_introduction__heading {
  font-weight: bold;
  line-height: 1.5;
  text-align: center;
  padding-inline: 1em;
}
.index_introduction__heading > span {
  color: #2f4fa1;
}
.index_introduction .index_slider {
  width: calc(100% - 2em);
  max-width: 1600px;
  margin: 2rem auto 0;
  overflow: hidden;
  border-radius: 100vh;
  background: #ffffff;
}
.index_introduction .index_slider .swiper-container {
  visibility: hidden;
}
.index_introduction .index_slider .swiper-container.swiper-initialized {
  visibility: visible;
}
.index_introduction .index_slider .swiper-wrapper {
  transition-timing-function: linear;
}
.index_introduction .index_slider .swiper-slide img {
  width: 100%;
  height: 100%;
  max-height: 70px;
  object-fit: contain;
}
@media screen and (min-width: 768px), print {
  .index_introduction {
    margin-bottom: 100px;
  }
  .index_introduction__heading > span {
    font-size: 44px;
  }
}
@media screen and (max-width: 767px) {
  .index_introduction {
    margin-bottom: 60px;
  }
  .index_introduction__heading > span {
    font-size: 24px;
  }
}

.index_info {
  display: grid;
  gap: 24px 48px;
}
.index_info__ttl {
  margin-bottom: 24px;
  font-weight: 600;
  line-height: 1.5;
}
.index_info > figure {
  text-align: center;
}
@media screen and (min-width: 768px), print {
  .index_info {
    grid-template-columns: auto 1fr;
  }
  .index_info__ttl {
    font-size: 2rem;
  }
}
@media screen and (max-width: 767px) {
  .index_info__ttl {
    font-size: 1.6rem;
  }
  .index_info > figure {
    order: 1;
  }
}

.index_structure_block .structure-flow {
  display: grid;
  gap: 36px 40px;
}
.index_structure_block .structure-flow__item {
  position: relative;
  border: 2px solid #ddf0fd;
  border-radius: 8px;
}
.index_structure_block .structure-flow__item-heading {
  padding: 10px 20px;
  background: linear-gradient(90deg, #0b49c3 0%, #3089e7 100%);
  color: #ffffff;
  font-weight: bold;
  line-height: 1.5;
}
.index_structure_block .structure-flow__item-number {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 100vh;
  background-color: #ddf0fd;
  color: #2f4fa1;
  font-weight: bold;
}
.index_structure_block .structure-flow__item-arrow {
  position: absolute;
}
@media screen and (min-width: 768px), print {
  .index_structure_block {
    padding-block: 80px 120px;
  }
  .index_structure_block .structure-flow {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 80px;
  }
  .index_structure_block .structure-flow__item {
    margin-left: 32px;
    padding: 40px 24px 24px;
  }
  .index_structure_block .structure-flow__item-heading {
    font-size: 2rem;
  }
  .index_structure_block .structure-flow__item-text {
    margin-top: 24px;
  }
  .index_structure_block .structure-flow__item-number {
    top: -32px;
    left: -32px;
    width: 64px;
    height: 64px;
    font-size: 3rem;
  }
  .index_structure_block .structure-flow__item-arrow {
    top: 50%;
    right: -22%;
    transform: translateY(-50%);
  }
}
@media screen and (max-width: 767px) {
  .index_structure_block {
    padding-block: 40px 80px;
  }
  .index_structure_block .structure-flow {
    margin-top: 40px;
  }
  .index_structure_block .structure-flow__item {
    margin-left: 20px;
    padding: 24px 16px 16px;
  }
  .index_structure_block .structure-flow__item-heading {
    padding: 8px 14px;
    font-size: 1.6rem;
  }
  .index_structure_block .structure-flow__item-text {
    margin-top: 16px;
  }
  .index_structure_block .structure-flow__item-number {
    top: -20px;
    left: -20px;
    width: 40px;
    height: 40px;
    font-size: 2rem;
  }
  .index_structure_block .structure-flow__item-arrow {
    bottom: -18%;
    left: calc(50% - 5px);
    transform: translateX(-50%) rotate(90deg);
    width: 30px;
  }
}

.index_risk_block {
  position: relative;
  background-color: #f7f7f7;
  padding-block: 64px;
}
.index_risk_block::after {
  position: absolute;
  left: 50%;
  clip-path: polygon(0 0, 50% 100%, 100% 0);
  transform: translateX(-50%);
  background-color: #f7f7f7;
  content: "";
}
.index_risk_block .risk-box {
  display: grid;
  gap: 16px;
}
.index_risk_block .risk-box__item {
  padding: 16px;
  border-radius: 8px;
  background-color: #ffffff;
}
.index_risk_block .risk-box__item > figure {
  text-align: center;
}
.index_risk_block .risk-box__item-heading {
  font-weight: bold;
  line-height: 1.5;
  text-align: center;
}
@media screen and (min-width: 768px), print {
  .index_risk_block {
    margin-bottom: 100px;
  }
  .index_risk_block::after {
    bottom: -48px;
    width: 240px;
    height: 48px;
  }
  .index_risk_block .risk-box {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 24px;
  }
  .index_risk_block .risk-box__item-heading {
    font-size: 2rem;
    margin-block: 16px;
  }
}
@media screen and (max-width: 767px) {
  .index_risk_block {
    margin-bottom: 60px;
  }
  .index_risk_block::after {
    bottom: -36px;
    width: 160px;
    height: 36px;
  }
  .index_risk_block .risk-box {
    margin-top: 16px;
  }
  .index_risk_block .risk-box__item-heading {
    font-size: 1.6rem;
    margin-block: 8px;
  }
}

.index_products {
  border-radius: 8px;
  background-color: #edf7fe;
}
.index_products a {
  display: block;
  border: 3px solid transparent;
  color: #000000;
  text-decoration: none;
}
.index_products a:hover {
  border-color: #2f4fa1;
}
.index_products .products-lk {
  display: grid;
  align-items: center;
  gap: 16px 24px;
  border-radius: 16px;
  background-color: #ffffff;
}
.index_products .products-other {
  display: grid;
  gap: 24px;
}
.index_products .products-other__item {
  border-radius: 16px;
  background-color: #ffffff;
}
.index_products .products-other__item figure {
  display: flex;
  justify-content: center;
  align-items: center;
}
@media screen and (min-width: 768px), print {
  .index_products {
    margin: 48px -80px 120px;
    padding: 80px;
  }
  .index_products .products-lk {
    grid-template-columns: 440px 1fr;
    padding: 32px 48px;
  }
  .index_products .products-other {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 24px;
  }
  .index_products .products-other__item {
    padding: 24px 32px;
  }
  .index_products .products-other__item figure {
    height: 120px;
  }
  .index_products .index_en_title {
    margin-bottom: 40px;
  }
}
@media screen and (max-width: 767px) {
  .index_products {
    margin: 32px -3vw 80px;
    padding: 40px 3vw;
  }
  .index_products .products-lk {
    padding: 16px 24px;
  }
  .index_products .products-other {
    margin-top: 24px;
  }
  .index_products .products-other__item {
    padding: 16px 24px;
  }
  .index_products .products-other__item figure {
    margin-bottom: 16px;
  }
}

.index_contact_block {
  background-color: #2f4fa1;
  color: #ffffff;
  font-weight: bold;
  text-align: center;
  padding-block: 48px;
}
.index_contact_block dt {
  padding: 15px 0 35px;
  line-height: 1.6;
}
.index_contact_block dd a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 540px;
  max-width: 100%;
  height: 80px;
  margin: auto;
  border: 2px solid #2f4fa1;
  border-radius: 8px;
  background-color: #ffffff;
  color: #2f4fa1;
  font-size: 2.4rem;
  text-decoration: none;
}
@media screen and (min-width: 768px), print {
  .index_contact_block dd a:hover {
    border-color: #ffffff;
    background-color: #2f4fa1;
    color: #ffffff;
  }
}
@media screen and (max-width: 767px) {
  .index_contact_block dt {
    padding: 0 0 25px;
    font-size: 1.6rem;
  }
  .index_contact_block dd a {
    font-size: 1.8rem;
  }
}