/* =============================================
   CONCEPT PAGE CSS
   ============================================= */

/* ---- Intro ---- */
.concept-intro {
  padding: 7rem 2rem;
  background: var(--color-bg);
}

.concept-intro-inner {
  max-width: 1050px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 5rem;
  align-items: center;
}

.concept-intro-images {
  position: relative;
  min-height: 380px;
}

.ci-img {
  object-fit: cover;
}

.ci-img--top {
  width: 78%;
  height: 280px;
  margin-left: auto;
}

.ci-img--bottom {
  width: 62%;
  height: 210px;
  margin-top: -3.5rem;
  border: 5px solid #fff;
  position: relative;
  z-index: 1;
}

.ci-label {
  position: absolute;
  bottom: 0.5rem;
  right: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--color-text-light);
}

.concept-intro-body {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.concept-intro-heading {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  line-height: 1.7;
  letter-spacing: 0.05em;
}

.concept-intro-heading em {
  font-style: normal;
  color: var(--color-accent);
}

.concept-intro-en {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.82rem;
  line-height: 2;
  color: var(--color-text-light);
}

/* ---- Features ---- */
.feature {
  padding: 6rem 2rem;
  background: var(--color-bg);
}

.feature--alt {
  background: var(--color-bg-light);
}

.feature-inner {
  max-width: 1050px;
  margin: 0 auto;
  display: grid;
  gap: 4rem;
  align-items: center;
}

.feature-inner--right {
  grid-template-columns: 1fr 1fr;
}

.feature-inner--left {
  grid-template-columns: 1fr 1fr;
}

.feature-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.feature-num {
  font-family: var(--font-sans);
  font-weight: 100;
  font-size: 4rem;
  letter-spacing: 0.05em;
  color: var(--color-border);
  line-height: 1;
}

.feature-heading {
  font-family: var(--font-jp);
  font-weight: 400;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.7;
  letter-spacing: 0.05em;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--color-border);
}

.feature-lead {
  font-size: 0.8rem;
  color: var(--color-accent2);
  line-height: 1.9;
}

.feature-text {
  font-size: 0.8rem;
  line-height: 2;
  color: var(--color-text-light);
}

.feature-sub {
  font-family: var(--font-jp);
  font-weight: 400;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--color-text);
}

.text-accent {
  color: var(--color-accent2);
  font-weight: 400;
}

.feature-image {
  aspect-ratio: 4/5;
  overflow: hidden;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.feature-image:hover img { transform: scale(1.03); }

/* ---- Breadcrumb wrap ---- */
.breadcrumb-wrap {
  background: var(--color-bg-light);
}

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .concept-intro-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .feature-inner--right,
  .feature-inner--left {
    grid-template-columns: 1fr;
  }

  .feature-inner--left .feature-image { order: -1; }
}

@media (max-width: 560px) {
  .concept-intro { padding: 4rem 1.4rem; }
  .feature { padding: 4rem 1.4rem; }
}