@media (prefers-color-scheme: dark) {
    .color-scheme-auto,
    [data-color-scheme='auto'] product-block {
        color-scheme: dark;
      --product-block-primary-color: #1e40af; /* 品牌主色（按钮等）*/
      --product-block-border-color: #3f3f46; /* 边框/分隔线 */
      --product-block-surface-color: #18181b; /* 卡片背景 */
      --product-block-title-color: #e5e5e5; /* 标题文字 */
      --product-block-subtle-color: #a1a1aa; /* 次要文字 */
      --product-block-accent-border-color: #fca5a5;
      --product-block-accent-color: #ef4444; /* 价格/徽章强调色 */
    }
}

.color-scheme-dark,
.dark,
[data-color-scheme='dark'] product-block {
    color-scheme: dark;
  --product-block-primary-color: #1e40af;
  --product-block-border-color: #3f3f46;
  --product-block-surface-color: #18181b;
  --product-block-title-color: #e5e5e5;
  --product-block-subtle-color: #a1a1aa;
  --product-block-accent-border-color: #ef4444;
  --product-block-accent-color: #ef4444;
}