/* ── Difference Section (왜 지디에스성형외과일까요?) ── */
.difference {
  background-color: #fbfbfd;
  padding: var(--space-2xl) var(--space-md);
}

.difference__inner {
  width: 100%;
  max-width: 24rem;
  margin: 0 auto;
  text-align: center;
}

.difference__title {
  font-size: clamp(1.5rem, 5.5vw, 2.125rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.difference__description {
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: -0.01em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.difference__cards {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.difference__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  height: 100%;
  min-height: 0;
  padding: 2rem 1.5rem 2.25rem;
  background-color: #ffffff;
  border-radius: 24px;
  box-shadow:
    0 2px 20px rgba(0, 0, 0, 0.05),
    0 1px 4px rgba(0, 0, 0, 0.03);
  transition:
    transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1),
    box-shadow 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.difference__card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.25rem;
  color: #64748b;
}

.difference__card-icon svg {
  display: block;
  width: 28px;
  height: 28px;
}

.difference__card-title {
  margin-bottom: 0.75rem;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.difference__card-text {
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--color-text-secondary);
}

@media (hover: hover) {
  .difference__card:hover {
    transform: translateY(-8px);
    box-shadow:
      0 28px 64px rgba(0, 0, 0, 0.14),
      0 10px 24px rgba(0, 0, 0, 0.07);
  }
}

/* ── Tablet: 2 + 1 ── */
@media (min-width: 48rem) {
  .difference {
    padding: calc(var(--space-2xl) + 1rem) var(--space-lg) var(--space-2xl);
  }

  .difference__inner {
    max-width: 56rem;
  }

  .difference__title {
    margin-bottom: var(--space-xl);
  }

  .difference__description {
    font-size: 1.1875rem;
    max-width: 36rem;
    margin-inline: auto;
    margin-bottom: calc(var(--space-xl) + 0.5rem);
  }

  .difference__cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .difference__card {
    padding: 2.25rem 1.65rem 2.5rem;
  }

  .difference__card:last-child {
    grid-column: 1 / -1;
    max-width: calc(50% - (var(--space-md) / 2));
    justify-self: center;
    width: 100%;
  }

  .difference__card-title {
    font-size: 1.125rem;
  }
}

/* ── Desktop: 3 column ── */
@media (min-width: 64rem) {
  .difference__inner {
    max-width: 64rem;
  }

  .difference__cards {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .difference__card:last-child {
    grid-column: auto;
    max-width: none;
    justify-self: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .difference__card {
    transition: none;
  }
}