我偷翻了一下，好像是因為這行 background-color:#0000; 導致的
往上翻在
@layer base {
...
button,
input,
select,
optgroup,
textarea {
font:inherit;
font-feature-settings:inherit;
font-variation-settings:inherit;
letter-spacing:inherit;
color:inherit;
opacity:1;
background-color:#0000;
border-radius:0
}
...
}