.concept-hero {
  position: relative;
  color: #ffffff;
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.concept-hero-inner {
  position: relative;
}

.concept-hero-content {
  max-width: 640px;
}

.concept-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.concept-grid-align {
  align-items: center;
  gap: var(--space-10);
}

.concept-grid-reverse {
  align-items: center;
  gap: var(--space-10);
}

@media (min-width: 768px) {
  .concept-grid-reverse {
    grid-auto-flow: dense;
  }

  .concept-grid-reverse > :first-child {
    order: 2;
  }

  .concept-grid-reverse > :last-child {
    order: 1;
  }
}

.concept-image-wrap {
  position: relative;
}

.concept-image {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-medium);
}

.concept-image.main-shadow {
  box-shadow: var(--shadow-neon-mixed);
}

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

.concept-list {
  display: grid;
  gap: var(--space-4);
}

.concept-list-item h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
}

.concept-bullets {
  list-style: none;
}

.concept-bullets li {
  position: relative;
  padding-left: 20px;
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.concept-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.concept-section-header {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.concept-quality-cols {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .concept-quality-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.concept-quality-panel {
  background: radial-gradient(circle at top, rgba(37, 99, 255, 0.12), transparent 55%),
              radial-gradient(circle at bottom, rgba(255, 122, 26, 0.12), transparent 55%),
              #020617;
  color: #e5e7eb;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-strong);
}

.concept-quality-panel p {
  color: #e5e7eb;
}

.concept-quality-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: var(--space-4);
}

.concept-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.concept-card-link {
  display: inline-flex;
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.concept-card-link::after {
  content: "\2197";
  margin-left: 6px;
  font-size: 0.8em;
}

.concept-safety-panel {
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.concept-safety-list {
  list-style: none;
}

.concept-safety-list li {
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.concept-safety-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
}

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

.concept-cta-note {
  font-size: var(--font-size-sm);
}

.concept-link-block {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.concept-link-block h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.concept-image-stack {
  position: relative;
}

.concept-image-stack-main {
  position: relative;
  max-width: 420px;
}

@media (max-width: 767px) {
  .concept-hero {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }

  .concept-grid-align,
  .concept-grid-reverse {
    gap: var(--space-6);
  }

  .concept-quality-panel {
    margin-top: var(--space-6);
  }
}