.curriculum {
  background-color: var(--color-bg-alt);
  padding-block: clamp(2.25rem, 4.5vh, 3.25rem);
}

.curriculum__container {
  display: flex;
  flex-direction: column;
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
}

/* Header */

.curriculum__header {
  max-width: 720px;
}

.curriculum__overline {
  margin: 0 0 var(--space-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.curriculum__title {
  margin: 0;
  font-family: var(--font-primary);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.curriculum__title-line {
  display: block;
  font-size: clamp(1.625rem, 3.2vw, 2.375rem);
  font-weight: 800;
  color: var(--color-text);
}

.curriculum__title-line--accent {
  color: var(--color-accent);
}

/* Accordion */

.curriculum__accordion {
  border-top: 1px solid var(--color-accent);
}

.curriculum__item {
  border-bottom: 1px solid var(--color-accent);
}

.curriculum__trigger {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.5vw, 1rem);
  width: 100%;
  min-height: clamp(4.5rem, 8vw, 5.5rem);
  padding: clamp(0.875rem, 1.5vw, 1.125rem) clamp(0.5rem, 1vw, 0.75rem);
  font-family: var(--font-primary);
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
}

.curriculum__number {
  flex-shrink: 0;
  width: 2.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-accent);
}

.curriculum__trigger-title {
  flex: 1;
  min-width: 0;
  font-size: clamp(0.75rem, 1.2vw, 0.875rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
}

.curriculum__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(2rem, 4vw, 2.25rem);
  height: clamp(2rem, 4vw, 2.25rem);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: 50%;
}

.curriculum__icon::before {
  content: "+";
}

.curriculum__item.is-open .curriculum__icon::before {
  content: "−";
}

/* Panel */

.curriculum__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}

.curriculum__item.is-open .curriculum__panel {
  grid-template-rows: 1fr;
}

.curriculum__panel-inner {
  overflow: hidden;
  background: transparent;
}

.curriculum__panel-inner > p {
  margin: 0;
  padding-right: clamp(0.5rem, 1vw, 0.75rem);
  padding-left: calc(2.25rem + clamp(0.75rem, 1.5vw, 1rem) + clamp(0.5rem, 1vw, 0.75rem));
  max-width: 72ch;
  font-size: clamp(0.875rem, 1.3vw, 0.9375rem);
  font-weight: 400;
  line-height: 1.5;
  color: rgba(21, 37, 51, 0.82);
}

.curriculum__panel-inner > p:first-child {
  padding-top: 1.5rem;
}

.curriculum__panel-inner > p + p {
  margin-top: 1.25rem;
}

.curriculum__panel-inner > p:last-child {
  padding-bottom: 1.625rem;
}

/* Summary */

.curriculum__summary {
  padding: clamp(1rem, 2vw, 1.375rem) clamp(1.25rem, 2.5vw, 1.75rem);
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
}

.curriculum__summary-lead {
  margin: 0 0 0.625rem;
  font-size: clamp(0.875rem, 1.3vw, 0.9375rem);
  font-weight: 500;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.88);
}

.curriculum__summary-chain {
  margin: 0;
  font-size: clamp(0.8125rem, 1.5vw, 1.125rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-white);
}

@media (min-width: 960px) {
  .curriculum__summary-chain {
    white-space: nowrap;
  }
}

@media (max-width: 768px) {
  .curriculum__trigger {
    min-height: 44px;
    padding: 0.75rem 0;
    gap: 0.625rem;
  }

  .curriculum__number {
    width: 1.75rem;
    font-size: 1.5rem;
  }

  .curriculum__trigger-title {
    font-size: clamp(0.6875rem, 3vw, 0.8125rem);
  }

  .curriculum__icon {
    width: 2rem;
    height: 2rem;
    min-width: 2rem;
    min-height: 2rem;
  }

  .curriculum__panel-inner > p {
    padding-left: calc(1.75rem + 0.625rem);
    padding-right: 0;
    max-width: none;
  }

  .curriculum__panel-inner > p:first-child {
    padding-top: 1rem;
  }

  .curriculum__panel-inner > p:last-child {
    padding-bottom: 1.25rem;
  }

  .curriculum__summary-chain {
    white-space: normal;
  }
}

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