.business-introduction__layout,
.business-detail__layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: center;
  gap: 80px;
}

.business-introduction__eyebrow,
.business-detail__en {
  color: var(--color-primary);
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.business-introduction__lead {
  margin-bottom: 32px;
  font-size: clamp(2.4rem, 3.2vw, 4rem);
  line-height: 1.45;
}

.business-introduction__visual,
.business-detail__visual {
  margin: 0;
}

.business-introduction__image,
.business-detail__image {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.business-anchor-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 72px;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.business-anchor-nav a {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 150px;
  padding: 28px;
  font-weight: 700;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.business-anchor-nav span {
  color: var(--color-primary);
  font-family: var(--font-en);
}

.business-detail {
  scroll-margin-top: 100px;
}

.business-detail--alternate {
  background: var(--color-bg-light);
}

.business-detail__layout--reverse .business-detail__visual {
  order: 2;
}

.business-detail__number {
  margin-bottom: 8px;
  color: var(--color-primary);
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 700;
}

.business-detail__title {
  margin-top: 20px;
  margin-bottom: 28px;
  font-size: clamp(3rem, 4vw, 4.8rem);
  line-height: 1.4;
}

.business-detail__lead {
  margin-bottom: 28px;
  font-size: clamp(2.2rem, 2.8vw, 3.2rem);
  line-height: 1.55;
}

.business-service-box {
  margin-top: 48px;
  padding: 32px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

.business-service-box h3 {
  margin-bottom: 24px;
  font-size: 2.2rem;
}

.business-service-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.business-service-list li {
  position: relative;
  padding-left: 18px;
}

.business-service-list li::before {
  position: absolute;
  top: 0.8em;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  content: "";
}

.business-approach {
  color: var(--color-white);
  background: var(--color-bg-dark);
}

.business-approach .section-heading__en {
  color: var(--color-primary);
}

.business-approach__heading {
  margin-bottom: 40px;
}

.business-approach__lead {
  margin-bottom: 24px;
  font-size: clamp(3rem, 4vw, 5rem);
  font-weight: 700;
}

.business-approach__text {
  max-width: 820px;
  color: rgba(255, 255, 255, 0.8);
}

.business-approach__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 56px;
}

.business-approach__list article {
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.business-approach__number {
  color: var(--color-primary);
  font-family: var(--font-en);
  font-weight: 700;
}

.business-flow {
  background: var(--color-bg-light);
}

.business-flow__heading,
.business-maintenance__heading {
  margin-bottom: 56px;
}

.business-flow__list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.business-flow__list::before {
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 31px;
  width: 2px;
  background: repeating-linear-gradient(
    to bottom,
    var(--color-primary) 0,
    var(--color-primary) 6px,
    transparent 6px,
    transparent 13px
  );
  content: "";
}

.business-flow__list li {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  gap: 32px;
  padding: 0;
  border-top: 0;
}

.business-flow__list li:not(:last-child) {
  margin-bottom: 20px;
}

.business-flow__list li:last-child {
  border-bottom: 0;
}

.business-flow__number {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  color: var(--color-primary);
  font-family: var(--font-en);
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.business-flow__list li > div {
  padding: 24px 32px;
  background: var(--color-white);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.business-flow__list li:hover > div {
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
}

.business-flow__list li:hover .business-flow__number {
  color: var(--color-white);
  background: var(--color-primary);
}

.business-flow__list h3 {
  margin-bottom: 8px;
  font-size: 2.2rem;
}

.business-flow__list p {
  margin-bottom: 0;
}

.business-maintenance__content {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 80px;
}

.business-maintenance__content h3 {
  font-size: clamp(2.6rem, 3.2vw, 4rem);
  line-height: 1.5;
}

.business-maintenance__contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 64px;
  padding: 36px;
  background: var(--color-bg-light);
}

.business-maintenance__contact p {
  margin-bottom: 0;
  font-weight: 700;
}

@media (max-width: 1023px) {
  .business-introduction__layout,
  .business-detail__layout,
  .business-maintenance__content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .business-detail__layout--reverse .business-detail__visual {
    order: 0;
  }

  .business-anchor-nav,
  .business-approach__list {
    grid-template-columns: 1fr;
  }

  .business-service-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .business-introduction__layout,
  .business-detail__layout,
  .business-maintenance__content {
    gap: 36px;
  }

  .business-anchor-nav {
    margin-top: 48px;
  }

  .business-anchor-nav a {
    min-height: auto;
  }

  .business-service-list {
    grid-template-columns: 1fr;
  }

  .business-flow__list::before {
    left: 27px;
  }

  .business-flow__list li {
    grid-template-columns: 56px 1fr;
    align-items: flex-start;
    gap: 16px;
  }

  .business-flow__list li:not(:last-child) {
    margin-bottom: 16px;
  }

  .business-flow__number {
    width: 56px;
    height: 56px;
    font-size: 1.5rem;
  }

  .business-flow__list li > div {
    padding: 18px 20px;
  }

  .business-maintenance__contact {
    align-items: flex-start;
    flex-direction: column;
  }
}