/* ==========================================================================
   Concept page – additional principles
   ========================================================================== */

.concept-additional {
  position: relative;
  isolation: isolate;
  padding: clamp(5rem, 9vw, 9rem) 0;
  background: #ffffff;
}

.concept-additional::before {
  position: absolute;
  z-index: -1;
  top: 10%;
  right: -10rem;
  width: 28rem;
  height: 28rem;
  border-radius: 47% 53% 39% 61% / 56% 42% 58% 44%;
  background: var(--mh-yellow, #e0e26b);
  opacity: 0.13;
  content: "";
}

.concept-additional__inner {
  width: min(100% - 3rem, 1240px);
  margin-inline: auto;
}

.concept-additional__layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: stretch;
}

.concept-additional__media {
  position: relative;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  border-radius: 2.75rem 0.75rem 2.75rem 2.75rem;
  background: #e6efed;
  box-shadow: 0 22px 55px rgb(0 89 93 / 12%);
}

.concept-additional__image {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 760px;
  object-fit: cover;
  object-position: center;
}

.concept-additional__caption {
  position: absolute;
  right: 1.25rem;
  bottom: 1.25rem;
  left: 1.25rem;
  padding: 1rem 1.2rem;
  border-radius: 1rem;
  background: rgb(0 89 93 / 88%);
  color: #ffffff;
  font-size: 0.9rem;
  line-height: 1.4;
  backdrop-filter: blur(8px);
}

.concept-additional__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.concept-principle {
  position: relative;
  min-width: 0;
  padding: clamp(1.6rem, 2.5vw, 2.2rem);
  border-radius: 2rem 2rem 0.6rem 2rem;
  background: #eff7f5;
}

.concept-principle:nth-child(even) {
  border-radius: 0.6rem 2rem 2rem 2rem;
  background: #f4f4d5;
}

.concept-principle__number {
  display: block;
  margin-bottom: 1.2rem;
  color: var(--mh-primary-dark, #52acb2);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  opacity: 0.72;
}

.concept-principle__title {
  margin: 0 0 0.9rem;
  color: var(--mh-dark-teal, #00595d);
  font-size: clamp(1.2rem, 1.7vw, 1.55rem);
  line-height: 1.2;
}

.concept-principle__text {
  margin: 0;
  color: #596767;
  font-size: 0.96rem;
  line-height: 1.65;
}

@media (max-width: 1000px) {
  .concept-additional__layout {
    grid-template-columns: 1fr;
  }

  .concept-additional__media,
  .concept-additional__image {
    min-height: 520px;
  }
}

@media (max-width: 700px) {
  .concept-additional__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .concept-additional {
    padding-block: 4.5rem;
  }

  .concept-additional__inner {
    width: min(100% - 2rem, 1240px);
  }

  .concept-additional__media,
  .concept-additional__image {
    min-height: 420px;
  }

  .concept-additional__caption {
    right: 0.8rem;
    bottom: 0.8rem;
    left: 0.8rem;
  }
}