.headline {
  padding: 3rem 0 6rem;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.headline_title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.headline_title_ja {
  font-size: var(--fs-28-36);
  color: var(--color_blue);
}

.headline_title_en {
  font-size: var(--fs-18-20);
  color: var(--color_sky);
}

.introduction {
  position: relative;
  background-image: linear-gradient(135deg, #F3FBFF 25%, transparent 25%, transparent 50%, #F3FBFF 50%, #F3FBFF 75%, transparent 75%, transparent);
  background-size: 100px 100px;
  background-color: #ffffff;
  padding: 0 0 6rem 0;
}

@media (max-width: 768px) {
  .introduction {
    padding: 0 0 3rem;
  }
}

.introduction.section_curving::before {
  background-image: linear-gradient(135deg, #F3FBFF 23%, transparent 22%, transparent 48%, #F3FBFF 44%, #F3FBFF 73%, transparent 73%, transparent);
  background-size: 100px 100px;
  background-color: #ffffff;
}

.introduction_inner {
  max-width: calc(1024px + 4rem);
  width: 100%;
  margin: auto;
  padding: var(--pad-inner-pc);
}

@media (max-width: 768px) {
  .introduction_inner {
    padding: var(--pad-inner-sp);
  }
}

.introduction_lead {
  font-size: var(--fs-18-20);
  font-weight: var(--font_medium);
  text-align: center;
  margin: 0 0 6rem;
  line-height: 2;
}

.details {
  width: 100%;
  background: var(--color_blue-pale);
  padding: 9rem 0 12rem;
}

@media (max-width: 768px) {
  .details {
    padding: 6rem 0 12rem;
  }
}

.details_inner {
  width: 100%;
  max-width: calc(1024px + 4rem);
  margin: auto;
  padding: var(--pad-inner-pc);
}

@media (max-width: 768px) {
  .details_inner {
    padding: var(--pad-inner-sp);
  }
}

.details_cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6rem 2rem;
}

@media (max-width: 425px) {
  .details_cards {
    grid-template-columns: 1fr;
  }
}

.details_card {
  display: flex;
  flex-direction: column;
  position: relative;
  width: 100%;
  margin-inline: auto;
  overflow: visible;
  padding: 4rem 2rem 2rem 2rem;
  background: var(--color_white);
  border-radius: 1rem;
  box-shadow: 0 4px 28px rgba(0, 40, 100, 0.1);
  font-family: var(--font_display);
}

@media (max-width: 768px) {
  .details_card {
    padding: 3rem 1rem 1rem 1rem;
  }
}

.details_card_badge {
  --badge-size: clamp(56px,
      calc(56px + (100vw - 375px) * 24 / 825),
      80px);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--badge-size);
  height: var(--badge-size);
  border-radius: 50%;
  border: calc(var(--badge-size) * 5 / 80) solid var(--color_sky);
  background: var(--color_white);
  font-family: "Montserrat", var(--font_sans);
  font-size: clamp(1.625rem, calc(var(--badge-size) * 0.6), 3rem);
  font-weight: 500;
  color: var(--color_sky);
  line-height: 1;
  box-shadow: 0 0 0 calc(var(--badge-size) * 16 / 80) var(--color_white);
  transform: translate(calc(var(--badge-size) * 16 / 80),
      calc(var(--badge-size) * -34 / 80));
}

.details_card_title {
  margin: 0 0 1rem;
  font-size: var(--fs-20-28);
  font-weight: var(--font_bold);
  color: var(--color_sky);
  line-height: 1.35;
}

.details_card_title::after {
  content: "";
  display: block;
  width: 100%;
  height: 2px;
  margin-top: 0.5rem;
  background: var(--color_sky);
}

.details_card_text {
  margin: 0 0 clamp(1rem, 2.5vw, 1.5rem);
  font-size: var(--fs-16-18);
  color: #333;
  line-height: 1.85;
}

.details_card_figure {
  margin: auto 0 0 0;
}

.details_card_img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-inline: auto;
}