.concept-page {
  background: #fff;
}

.concept-page__hero {
  position: relative;
  min-height: 53vh;
  overflow: hidden;
  background-image: var(--hero-image);
  background-position: center top;
  background-size: cover;
}

.concept-page__hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}

.concept-page__hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  width: min(100%, 1280px);
  min-height: 53vh;
  margin-inline: auto;
  padding: 0 clamp(32px, 6vw, 64px) clamp(80px, 10vh, 112px);
  color: #fff;
}

.concept-page__hero-kicker {
  margin: 0 0 20px;
  font-family: 'Inter', sans-serif;
  font-size: 9px;
  letter-spacing: 0.5em;
  color: rgba(255, 255, 255, 0.5);
}

.concept-page__hero-title {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.concept-page__hero-line {
  display: block;
  width: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  margin-top: 32px;
}

.concept-page__intro {
  padding: clamp(80px, 10vw, 112px) clamp(32px, 6vw, 64px) clamp(64px, 8vw, 80px);
  text-align: center;
}

.concept-page__intro p {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(18px, 2vw, 20px);
  letter-spacing: 0.08em;
  line-height: 2;
  color: #1a1a1a;
}

.concept-page__intro-line {
  display: inline-block;
  width: 32px;
  border-top: 1px solid #c8bfb0;
  margin-top: 40px;
}

.concept-page__promises {
  width: min(100%, 800px);
  margin-inline: auto;
  padding: clamp(48px, 6vw, 64px) clamp(32px, 6vw, 64px) 56px;
}

.concept-page__promise {
  margin-bottom: clamp(64px, 8vw, 88px);
}

.concept-page__promise-image-wrap {
  overflow: hidden;
  aspect-ratio: 680 / 454;
  margin-bottom: 32px;
}

.concept-page__promise-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-page__hover-media {
  transition: transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
  transform-origin: center;
}

.concept-page__promise:hover .concept-page__hover-media,
.concept-page__link-card:hover .concept-page__hover-media,
.concept-page__case-card:hover .concept-page__hover-media {
  transform: scale(1.03);
}

.concept-page__promise h2 {
  margin: 0 0 24px;
  font-family: 'Shippori Mincho', serif;
  font-size: 22px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: #1a1a1a;
}

.concept-page__staff {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.concept-page__staff-image-wrap {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  overflow: hidden;
  flex-shrink: 0;
}

.concept-page__staff-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-page__staff-name-ja {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: #1a1a1a;
}

.concept-page__staff-name-en {
  margin: 0;
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: #999;
}

.concept-page__promise-tagline {
  margin: 0 0 8px;
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(15px, 2vw, 17px);
  letter-spacing: 0.06em;
  line-height: 2.4;
  color: #1a1a1a;
}

.concept-page__promise-body {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  line-height: 2.8;
  color: #888;
}

.concept-page__links-area {
  background: #f4f1ec;
  padding: clamp(96px, 12vw, 144px) clamp(32px, 6vw, 64px);
}

.concept-page__links-inner,
.concept-page__case-inner {
  width: min(100%, 1280px);
  margin-inline: auto;
}

.concept-page__links-header,
.concept-page__case-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 60px;
}

.concept-page__links-header p,
.concept-page__case-header p {
  margin: 0 0 20px;
  font-family: 'Shippori Mincho', serif;
  font-size: 9px;
  letter-spacing: 0.5em;
  line-height: 13.5px;
  color: #bbb;
}

.concept-page__links-header h2,
.concept-page__case-header h2 {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(24px, 2.5vw, 28px);
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: #1a1a1a;
}

.concept-page__links-header a,
.concept-page__case-header a,
.concept-page__case-link-mobile {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: 'Shippori Mincho', serif;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: #bbb;
  transition: color 0.3s ease;
}

.concept-page__links-header a:hover,
.concept-page__case-header a:hover,
.concept-page__case-link-mobile:hover {
  color: #1a1a1a;
}

.concept-page__links-header a span,
.concept-page__case-header a span,
.concept-page__case-link-mobile i,
.concept-page__link-card span i,
.concept-page__case-card span i {
  display: inline-block;
  width: 24px;
  border-top: 1px solid currentColor;
}

.concept-page__links-desktop {
  display: none;
}

.concept-page__links-mobile {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.concept-page__link-card {
  color: inherit;
  text-decoration: none;
}

.concept-page__link-card p,
.concept-page__case-card p {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: 9px;
  letter-spacing: 0.45em;
  line-height: 13.5px;
  color: #bbb;
}

.concept-page__link-card h3,
.concept-page__case-card h3 {
  margin: 6.5px 0 0;
  font-family: 'Shippori Mincho', serif;
  font-size: 18px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: #1a1a1a;
  transition: color 0.3s ease;
}

.concept-page__link-card:hover h3,
.concept-page__case-card:hover h3 {
  color: #666;
}

.concept-page__link-card span,
.concept-page__case-card span {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Shippori Mincho', serif;
  font-size: 9px;
  letter-spacing: 0.3em;
  line-height: 13.5px;
  color: #bbb;
}

.concept-page__link-card--mobile-main .concept-page__image-frame {
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 20px;
}

.concept-page__link-card--mobile-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-page__link-card--sub {
  display: flex;
  gap: 20px;
  align-items: center;
}

.concept-page__link-card--sub .concept-page__image-frame {
  overflow: hidden;
  width: 120px;
  height: 80px;
  flex-shrink: 0;
}

.concept-page__link-card--sub img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-page__case-area {
  background: #faf9f7;
  padding: clamp(96px, 12vw, 160px) clamp(32px, 6vw, 64px);
}

.concept-page__case-grid--desktop {
  display: none;
}

.concept-page__case-grid--mobile {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.concept-page__case-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

.concept-page__case-card .concept-page__image-frame {
  overflow: hidden;
  margin-bottom: 32px;
}

.concept-page__case-card img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

.concept-page__case-card h3 {
  margin: 14px 0 16px;
}

.concept-page__case-desc {
  margin: 0;
  font-family: 'Shippori Mincho', serif;
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 2;
  color: #999;
}

.concept-page__case-card span {
  margin-top: 24px;
  gap: 12px;
}

.concept-page__case-link-mobile {
  justify-content: center;
  margin-top: 48px;
}

@media (min-width: 920px) {
  .concept-page__links-header h2 {
    font-size: 26px;
    line-height: 48px;
    white-space: nowrap;
  }

  .concept-page__links-desktop {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    min-height: 560px;
  }

  .concept-page__links-mobile {
    display: none;
  }

  .concept-page__link-card--main {
    width: min(42%, 574px);
    position: relative;
  }

  .concept-page__link-card--main .concept-page__image-frame {
    overflow: hidden;
    width: min(704px, 100%);
    height: 471px;
  }

  .concept-page__link-card--main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .concept-page__link-card--main p {
    margin-top: 22px;
  }

  .concept-page__link-card--main span {
    margin-top: 21px;
    gap: 12px;
  }

  .concept-page__link-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
    padding-left: clamp(12px, 4vw, 177px);
    min-height: 560px;
  }

  .concept-page__link-card--sub {
    gap: 28px;
  }

  .concept-page__link-card--sub .concept-page__image-frame {
    width: 250px;
    height: 156px;
  }

  .concept-page__link-card--sub h3 {
    white-space: nowrap;
  }

  .concept-page__case-header {
    margin-bottom: 60px;
  }

  .concept-page__case-grid--desktop {
    display: flex;
    gap: 40px;
    align-items: flex-start;
  }

  .concept-page__case-grid--mobile,
  .concept-page__case-link-mobile {
    display: none;
  }

  .concept-page__case-card {
    flex: 1;
    margin-top: var(--card-offset, 0);
  }

  .concept-page__case-card span {
    gap: 12px;
  }
}

@media (max-width: 767px) {
  .concept-page__hero-inner {
    padding-bottom: 80px;
  }

  .concept-page__links-header,
  .concept-page__case-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .concept-page__links-header p,
  .concept-page__case-header p {
    margin-bottom: 12px;
  }

  .concept-page__links-header h2,
  .concept-page__case-header h2 {
    font-size: 24px;
  }

  .concept-page__case-link-desktop {
    display: none;
  }
}