.concepts-hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-12);
}

.concepts-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .concepts-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.1fr);
  }

  .concepts-hero-media {
    order: 2;
  }
}

.concepts-hero-media {
  position: relative;
}

.concepts-hero-image {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-medium);
  object-fit: cover;
  max-height: 520px;
}

.concepts-hero-content {
  max-width: 34rem;
}

.concepts-hero-eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--gray-500);
  margin-bottom: var(--space-3);
}

.concepts-hero-title {
  font-size: clamp(2.2rem, 4vw, 2.7rem);
  letter-spacing: -0.04em;
  margin-bottom: var(--space-3);
}

.concepts-hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  margin-bottom: var(--space-6);
}

.concepts-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.concepts-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr);
  gap: var(--space-8);
  align-items: flex-start;
}

@media (min-width: 960px) {
  .concepts-intro-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.1fr);
  }
}

.concepts-intro-main h2 {
  margin-bottom: var(--space-4);
}

.concepts-intro-card {
  height: 100%;
}

.concepts-bullet-list {
  list-style: none;
  padding-left: 0;
  margin-bottom: var(--space-4);
}

.concepts-bullet-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  line-height: 1.6;
}

.concepts-bullet-list li + li {
  margin-top: 0.35rem;
}

.concepts-bullet-list li::before {
  content: "";
  position: absolute;
  top: 0.55rem;
  left: 0.35rem;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
}

.concepts-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.concepts-section-header {
  max-width: 44rem;
  margin: 0 auto var(--space-10);
  text-align: center;
}

.concepts-section-subtitle {
  font-size: var(--font-size-base);
}

.concepts-grid-layout {
  align-items: stretch;
}

.concepts-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
}

.concepts-card-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.concepts-card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform var(--transition-slow);
}

.concepts-card:hover .concepts-card-image {
  transform: scale(1.06);
}

.concepts-card-body {
  display: flex;
  flex-direction: column;
}

.concepts-card-body h3 {
  margin-bottom: var(--space-3);
}

.concepts-card-body--no-media {
  gap: var(--space-2);
}

.concepts-premium {
  background: radial-gradient(circle at 0 0, rgba(14, 165, 233, 0.08), transparent 55%), var(--color-background);
}

.concepts-premium-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr);
  gap: var(--space-8);
  align-items: flex-start;
}

@media (min-width: 1024px) {
  .concepts-premium-inner {
    grid-template-columns: minmax(0, 1.8fr) minmax(0, 1.1fr);
  }
}

.concepts-premium-content > h2 {
  margin-bottom: var(--space-4);
}

.concepts-premium-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}

@media (min-width: 768px) {
  .concepts-premium-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.concepts-premium-item h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

.concepts-premium-aside {
  position: relative;
}

.concepts-premium-card {
  position: sticky;
  top: 6rem;
}

.concepts-steps {
  list-style: none;
  padding-left: 0;
  margin-bottom: var(--space-6);
}

.concepts-steps li {
  position: relative;
  padding-left: 1.75rem;
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.concepts-steps li + li {
  margin-top: var(--space-3);
}

.concepts-steps li strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--gray-800);
}

.concepts-steps li::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  top: 0.05rem;
  left: 0;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.concepts-steps {
  counter-reset: step-counter;
}

.concepts-premium-cta {
  width: 100%;
}

@media (min-width: 480px) {
  .concepts-premium-cta {
    width: auto;
  }
}

.concepts-cta-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-start;
}

@media (min-width: 768px) {
  .concepts-cta-card {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.concepts-cta-content {
  max-width: 34rem;
}

.concepts-cta-content h2 {
  margin-bottom: var(--space-3);
}

.concepts-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .concepts-hero {
    padding-top: var(--space-12);
  }

  .concepts-card-image {
    height: 200px;
  }
}