front_Vue/ant-design-pro-vue3/src/style/theme.less

// @import 'ant-design-vue/lib/style/themes/default.less';
// @import 'ant-design-vue/dist/antd.dark.less';
// @root-entry-name: variable;

@white: #fff;
@black: #000;

html:not(.dark) {
  @component-background: @white;
}

// html.dark {
// }

.setStyle(@className, @propName) {
  html {
    &.dark {
      .@{className} {
        @{propName}: @black;
      }
    }

    &:not(.dark) {
      .@{className} {
        @{propName}: @white;
      }
    }
  }
}

.themeColor(@classNames, @i: 1) when(@i =< length(@classNames)) {
  @className: extract(@classNames, @i);

  .setStyle(@className, background-color);
  .setStyle(@className, color);

  .themeColor(@classNames, (@i + 1));
}

.themeTextColor(@classNames, @i: 1) when(@i =< length(@classNames)) {
  @className: extract(@classNames, @i);
  .setStyle(@className, color);
  .themeColor(@classNames, (@i + 1));
}

.themeBgColor(@classNames, @i: 1) when(@i =< length(@classNames)) {
  @className: extract(@classNames, @i);
  .setStyle(@className, background-color);
  .themeColor(@classNames, (@i + 1));
}