.product-shell {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.product-hero {
  padding: var(--space-16) 0 var(--space-12);
  border-bottom: var(--border);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.07), transparent 28%),
    radial-gradient(circle at top right, rgba(22, 61, 107, 0.08), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.product-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: var(--space-10);
  align-items: start;
}

.product-hero-copy h1 {
  margin-bottom: var(--space-4);
}

.product-summary {
  font-size: 1.06rem;
  margin-bottom: var(--space-6);
}

.product-meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
}

.product-meta-pills li {
  padding: 0.7rem 0.95rem;
  background: rgba(255,255,255,0.85);
  border: var(--border);
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--color-text);
}

.product-sidecard {
  background: #fff;
  border: var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--space-8);
  position: sticky;
  top: 100px;
}

.product-sidecard .price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.product-sidecard .price-note {
  margin-bottom: var(--space-5);
}

.sidecard-points {
  display: grid;
  gap: var(--space-3);
  margin: 0 0 var(--space-6);
}

.sidecard-points li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  color: var(--color-text);
}

.sidecard-points li::before,
.include-list li::before,
.compat-grid li::before,
.deliverable-list li::before,
.audience-list li::before,
.usage-list li::before {
  content: "✓";
  width: 22px;
  height: 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  color: #fff;
  font-size: 0.78rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.sidecard-stack {
  border-top: var(--border);
  padding-top: var(--space-5);
  display: grid;
  gap: var(--space-3);
}

.sidecard-stack small {
  color: var(--color-text-muted);
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-10);
}

.product-block {
  background: #fff;
  border: var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--space-8);
}

.block-header {
  margin-bottom: var(--space-6);
}

.block-header h2,
.block-header h3 {
  margin-bottom: var(--space-3);
}

.include-grid,
.deliverable-grid,
.audience-grid,
.compat-columns,
.info-grid {
  display: grid;
  gap: var(--space-6);
}

.include-grid,
.deliverable-grid,
.info-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.audience-grid,
.compat-columns {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.detail-card {
  background: var(--color-surface-muted);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.detail-card h3,
.detail-card h4 {
  margin-bottom: var(--space-3);
}

.detail-card p:last-child,
.detail-card ul:last-child {
  margin-bottom: 0;
}

.include-list,
.compat-grid,
.deliverable-list,
.audience-list,
.usage-list {
  display: grid;
  gap: var(--space-3);
}

.product-highlight {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 118, 110, 0.18);
  background: var(--color-secondary-soft);
}

.product-highlight strong {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.preview-quote {
  padding: var(--space-6);
  border-left: 4px solid var(--color-primary);
  background: var(--color-accent-soft);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.preview-quote p:last-child {
  margin-bottom: 0;
}

.product-cta-bar {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

.faq-note {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.product-footer-actions {
  justify-content: center;
}

@media (max-width: 1100px) {
  .product-hero-grid,
  .include-grid,
  .deliverable-grid,
  .info-grid,
  .audience-grid,
  .compat-columns {
    grid-template-columns: 1fr;
  }

  .product-sidecard {
    position: static;
  }
}

@media (max-width: 680px) {
  .product-hero,
  .product-block {
    padding: var(--space-6) 0;
  }

  .product-sidecard,
  .product-block {
    padding: var(--space-6);
  }

  .product-cta-bar {
    flex-direction: column;
  }

  .product-cta-bar .btn {
    width: 100%;
  }
}