.single-product-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 8px 48px 64px;
  display: flex;
  gap: 56px;
  align-items: flex-start;
}

.product-gallery { flex: 1; position: sticky; top: 80px; }
.product-gallery__main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 3px solid var(--color-border);
  margin-bottom: 12px;
}
.product-gallery__main img {
  width: 100%;
  display: block;
  object-fit: contain;
  aspect-ratio: 4/3;
  background: var(--color-primary-light);
}
.product-gallery__thumbs { display: flex; gap: 10px; flex-wrap: wrap; }
.product-gallery__thumb {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: border-color 0.2s;
}
.product-gallery__thumb:hover,
.product-gallery__thumb.is-active { border-color: var(--color-primary); }
.product-gallery__thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info { flex: 1.1; }
.product-info__title {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 10px;
  line-height: 1.2;
}
.product-info__desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.product-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.product-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1.5px solid;
  font-family: var(--font-sans);
}
.product-tag--age  { background: var(--color-primary-light); color: var(--color-primary-dark); border-color: #f4a261; }
.product-tag--type { background: var(--color-accent-blue-light); color: var(--color-accent-blue); border-color: #93c5fd; }
.product-tag--lang { background: var(--color-secondary-light); color: var(--color-secondary); border-color: #74c69d; }

.product-inside {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 24px;
}
.product-inside h3 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #888;
  margin-bottom: 12px;
  font-family: var(--font-sans);
}
.product-inside ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.product-inside ul li { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.product-inside ul li::before { content: "✓"; color: var(--color-secondary); font-weight: 800; }

.buy-box {
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 20px;
}
.buy-box__price { font-size: 38px; font-weight: 900; color: var(--color-primary); margin-bottom: 8px; }
.buy-box__note  { font-size: 12px; color: var(--color-muted); margin-bottom: 16px; }
.buy-box__btn {
  display: block;
  width: 100%;
  background: var(--color-primary);
  color: #fff;
  padding: 16px;
  border-radius: 40px;
  font-size: 16px;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(231,111,81,0.35);
  font-family: var(--font-sans);
  transition: transform 0.2s;
}
.buy-box__btn:hover { transform: translateY(-2px); color: #fff; }
.buy-box__security { text-align: center; font-size: 12px; color: var(--color-muted); margin-top: 10px; }

.inst-cta {
  background: linear-gradient(135deg, #f0faf4, var(--color-secondary-light));
  border: 2px solid #74c69d;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.inst-cta__text p     { font-size: 13px; color: var(--color-secondary); line-height: 1.5; }
.inst-cta__text strong { display: block; font-size: 14px; margin-bottom: 2px; }
.inst-cta__btn {
  background: var(--color-secondary);
  color: #fff;
  padding: 9px 18px;
  border-radius: 25px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.related-products {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 48px 64px;
  border-top: 2px solid var(--color-border);
}
.related-products h2 { font-size: 22px; margin-bottom: 20px; }
.related-products .products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}