.fv {
  position: relative;
  min-height: clamp(600px, 57.7vw, 1107px);
  overflow: hidden;
}

.fv__bg {
  position: absolute;
  inset: 0;
}

.fv__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--side-padding);
  padding-top: clamp(60px, 8.23vw, 158px);
  padding-bottom: 80px;
}

.fv__title-wrap {
  margin-bottom: 96px;
  opacity: 0;
  animation: fadeInUp 1s ease 0.3s forwards;
}

.fv__title {
  font-family: var(--bfont);
  font-weight: var(--regular-weight);
  font-size: 96px;
  line-height: 1.6;
  color: var(--main-color);
  padding-bottom: 64px;
}

.fv__br-sp {
  display: none;
}

.fv__subtitle {
  font-family: var(--bfont);
  font-weight: var(--bold-weight);
  font-size: 36px;
  line-height: var(--short-height);
  letter-spacing: var(--big-spacing);
  color: var(--main-color);
}

.fv__image {
  position: relative;
  height: clamp(260px, 25.6vw, 491px);
  width: 100%;
  overflow: hidden;
  border-radius: 2px;
}

.fv__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.fv__slide.is-active {
  opacity: 1;
}

.fv__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fv__slide.is-active img {
  animation: fvZoom 5s ease-in-out forwards;
}

@keyframes fvZoom {
  0%   { transform: scale(1);    }
  100% { transform: scale(1.1);  }
}

.fv__image-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(109.3deg, rgba(255,255,255,0.4) 0%, rgba(222,243,255,0.7) 100%);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== TABLET (768-991px) ===== */
@media (max-width: 991px) {
  .fv__content {
    padding-top: clamp(60px, 8vw, 120px);
  }
}

/* ===== SP (≤767px) ===== */
@media (max-width: 767px) {
  .fv {
    height: auto;
    min-height: calc(100vh - 80px);
    overflow: hidden;
  }

  .fv__content {
    padding: 60px 32px 60px;
    max-width: 100%;
  }

  .fv__title-wrap {
    text-align: center;
    margin-bottom: 60px;
    margin-left: -32px;
    margin-right: -32px;
  }

  .fv__title {
    font-size: 33.5px;
    font-weight: var(--regular-weight);
    color: var(--main-color);
    line-height: 1.6;
    letter-spacing: 0;
    padding-left: 32px; /* 「。」による光学的ずれの補正（値は要調整） */
    padding-bottom: 24px;
    text-align: left;;
  }

  .fv__br-sp {
    display: inline;
  }

  .fv__subtitle {
    font-size: 23px;
    text-align: left;
    margin-left: 32px;
    letter-spacing: 0.92px;
  }

  .fv__image {
    width: 100%;
    height: 438px;
    margin: 0 auto;
    border-radius: 0;
  }

  .fv__image-overlay {
    display: none;
  }
}

/* ===== @supports: 100dvh (iOS Safari URLバー対応) ===== */
@supports (height: 100dvh) {
  @media (max-width: 767px) {
    .fv {
      min-height: calc(100dvh - 80px);
    }
  }
}