.concept-page {
  width: min(calc(100% - 80px), 1180px);
  margin: 0 auto;
  padding: 82px 0 140px;
  font-size: 1rem;
}

.concept-intro {
  max-width: 1040px;
}

.concept-intro h2 {
  position: relative;
  padding-bottom: 18px;
  font-size: clamp(2rem, 2.7vw, 3.25rem);
  font-weight: 300;
  line-height: 1.55;
  letter-spacing: .08em;
}

.concept-intro h2::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: rgba(72, 64, 56, .2);
  content: "";
}

.concept-intro__body {
  margin-top: 30px;
  font-size: 1rem;
  line-height: 2.15;
}

.concept-intro__body p + p {
  margin-top: 10px;
}

.concept-pillars {
  margin-top: 84px;
}

.concept-pillars__heading {
  font-size: clamp(2.1rem, 2.8vw, 3.4rem);
  font-weight: 300;
  line-height: 1.45;
  letter-spacing: .08em;
}

.concept-pillar {
  margin-top: 80px;
}

.concept-pillar + .concept-pillar {
  margin-top: 118px;
}

.concept-pillar__lead {
  display: grid;
  grid-template-columns: minmax(0, 1.17fr) minmax(320px, .83fr);
  align-items: center;
  gap: 0;
}

.concept-pillar__lead--reverse {
  grid-template-columns: minmax(320px, .83fr) minmax(0, 1.17fr);
}

.concept-pillar__main-image {
  position: relative;
  z-index: 1;
  overflow: hidden;
  min-height: 430px;
  background: #f5f3ef;
}

.concept-pillar__main-image img {
  width: 100%;
  height: 100%;
  min-height: 430px;
  object-fit: cover;
  transition: transform 1.1s cubic-bezier(.2,.7,.2,1);
}

.concept-pillar__copy {
  position: relative;
  z-index: 2;
  margin-left: -56px;
  padding: 42px 34px 38px 62px;
  border-top: 1px solid rgba(72, 64, 56, .25);
  border-right: 1px solid rgba(72, 64, 56, .25);
  border-bottom: 1px solid rgba(72, 64, 56, .25);
  background: rgba(255,255,255,.96);
}

.concept-pillar__lead--reverse .concept-pillar__copy {
  margin-right: -56px;
  margin-left: 0;
  padding: 42px 62px 38px 34px;
  border-right: 0;
  border-left: 1px solid rgba(72, 64, 56, .25);
}

.concept-pillar__number {
  margin-bottom: 14px;
  color: #aa812b;
  font-family: var(--font-maru);
  font-size: 1rem;
  letter-spacing: .22em;
}

.concept-pillar__copy h3 {
  position: relative;
  padding-bottom: 14px;
  font-size: clamp(1.7rem, 2.1vw, 2.5rem);
  font-weight: 300;
  line-height: 1.65;
  letter-spacing: .07em;
  margin-bottom: 15px;
}

.concept-pillar__copy h3::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: rgba(72, 64, 56, .15);
  content: "";
}

.concept-pillar__copy h3 span {
  font-size: clamp(1.2rem, 1.8vw, 1.7rem);
  font-weight: 300;
}

.concept-pillar__copy p:not(.concept-pillar__number) {
  margin-top: 22px;
  font-size: 1rem;
  line-height: 2;
}

.concept-pillar__wide-image {
  margin-top: 40px;
  overflow: hidden;
  background: #f7f5f1;
}

.concept-pillar__wide-image img {
  width: 100%;
  height: min(36vw, 520px);
  object-fit: cover;
  transition: transform 1.1s cubic-bezier(.2,.7,.2,1);
}

.concept-pillar__wide-image figcaption {
  padding: 12px 0 0;
  text-align: center;
  font-size: .95rem;
  letter-spacing: .08em;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .85s ease, transform .85s cubic-bezier(.2,.7,.2,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (hover: hover) and (pointer: fine) {
  .concept-pillar__main-image:hover img,
  .concept-pillar__wide-image:hover img {
    transform: scale(1.025);
  }
}

@media (max-width: 1000px) {
  .concept-page {
    width: min(calc(100% - 48px), 900px);
  }

  .concept-pillar__lead,
  .concept-pillar__lead--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(280px, .9fr);
  }

  .concept-pillar__copy {
    margin-left: -34px;
    padding: 34px 26px 32px 42px;
  }

  .concept-pillar__lead--reverse .concept-pillar__copy {
    margin-right: -34px;
    padding: 34px 42px 32px 26px;
  }
}

@media (max-width: 767px) {
  .concept-page {
    width: calc(100% - 40px);
    padding: 58px 0 90px;
  }

  .concept-intro h2 {
    font-size: 1.8rem;
  }

  .concept-intro__body {
    margin-top: 24px;
    line-height: 2;
  }

  .concept-pillars {
    margin-top: 58px;
  }

  .concept-pillars__heading {
    font-size: 2rem;
  }

  .concept-pillar,
  .concept-pillar + .concept-pillar {
    margin-top: 54px;
  }

  .concept-pillar__lead,
  .concept-pillar__lead--reverse {
    display: flex;
    flex-direction: column;
  }

  .concept-pillar__lead--reverse {
    flex-direction: column-reverse;
  }

  .concept-pillar__main-image {
    width: 100%;
    min-height: 0;
  }

  .concept-pillar__main-image img {
    min-height: 0;
    aspect-ratio: 1.25 / 1;
  }

  .concept-pillar__copy,
  .concept-pillar__lead--reverse .concept-pillar__copy {
    width: calc(100% - 18px);
    margin: -22px 0 0 auto;
    padding: 28px 22px 26px;
    border: 1px solid rgba(72, 64, 56, .24);
  }

  .concept-pillar__lead--reverse .concept-pillar__copy {
    margin: -22px auto 0 0;
  }

  .concept-pillar__copy h3 {
    font-size: 1.65rem;
  }

  .concept-pillar__copy p:not(.concept-pillar__number) {
    margin-top: 18px;
    line-height: 1.95;
  }

  .concept-pillar__wide-image {
    margin-top: 28px;
  }

  .concept-pillar__wide-image img {
    height: auto;
    aspect-ratio: 1.35 / 1;
  }

  .concept-pillar__wide-image figcaption {
    font-size: .9rem;
  }
}

/* ========================================
   Concept：赤指示部分のみ差し替え
   既存のintro / lead / copyは触らず、説明ブロックだけ追加
======================================== */

.concept-red-detail {
  margin-top: 54px;
  margin-bottom: 10px;
}

.concept-red-detail__gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-bottom: 76px;
  border: 1px solid rgba(72, 64, 56, .25);
  border-right: 0;
    width: 100vw;
    margin-left: calc(50% - 50vw);
}

.concept-red-detail__image {
  aspect-ratio: 1.45 / 1;
  margin: 0;
  overflow: hidden;
  border-right: 1px solid rgba(72, 64, 56, .25);
  background: #f7f5f1;
}

.concept-red-detail__image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-red-detail__row {
  display: grid;
  grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr);
  gap: 44px;
  align-items: center;
  margin-top: 72px;
}

.concept-red-detail__row:first-of-type {
  margin-top: 0;
}

.concept-red-detail__row--left {
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, .92fr);
}

.concept-red-detail__row--left .concept-red-detail__row-image {
  order: 2;
}

.concept-red-detail__row--left .concept-red-detail__body {
  order: 1;
}

.concept-red-detail__row-image {
  aspect-ratio: 1.45 / 1;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(72, 64, 56, .25);
  background: #f7f5f1;
}

.concept-red-detail__row-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-red-detail__body h3 {
  margin: 0 0 22px;
  color: #403a36;
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.75;
  letter-spacing: .08em;
}

.concept-red-detail__body p {
  margin: 0 0 12px;
  color: #5a534d;
  font-size: .92rem;
  line-height: 2.15;
  letter-spacing: .06em;
}

.concept-red-detail__body p:last-child {
  margin-bottom: 0;
}

@media (hover: hover) and (pointer: fine) {
  .concept-red-detail__image img,
  .concept-red-detail__row-image img {
    transition: transform 1.1s cubic-bezier(.2,.7,.2,1);
  }

  .concept-red-detail__image:hover img,
  .concept-red-detail__row-image:hover img {
    transform: scale(1.025);
  }
}

@media (max-width: 1000px) {
  .concept-red-detail__gallery {
    margin-bottom: 58px;
  }

  .concept-red-detail__row,
  .concept-red-detail__row--left {
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .concept-red-detail {
    margin-top: 32px;
  }

  .concept-red-detail__gallery {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 46px;
    border: 0;
  }

  .concept-red-detail__image {
    border: 1px solid rgba(72, 64, 56, .24);
  }

  .concept-red-detail__row,
  .concept-red-detail__row--left {
    display: flex;
    flex-direction: column;
    gap: 22px;
    margin-top: 48px;
  }

  .concept-red-detail__row--left .concept-red-detail__row-image,
  .concept-red-detail__row--left .concept-red-detail__body {
    order: initial;
  }

  .concept-red-detail__row-image,
  .concept-red-detail__body {
    width: 100%;
  }

  .concept-red-detail__body h3 {
    margin-bottom: 16px;
    font-size: 1.12rem;
  }

  .concept-red-detail__body p {
    font-size: .86rem;
    line-height: 2;
  }
}