我们可以在 link 标签上添加 media="(prefers-color-scheme: dark)" | media="(prefers-color-scheme: light)" 来实现该功能
<!doctype html>
<html lang="en">
<head>
<link rel="icon" type="image/svg+xml" media="(prefers-color-scheme: dark)" href="/logo.svg" />
<link rel="icon" type="image/svg+xml" media="(prefers-color-scheme: light)" href="/logo-black.svg" />
</head>
</html>