Sony Reader shows link targets in blue

This is making me crazy. I can't seem to get Sony Reader for PC to stop showing everything linked to in the TOC in blue and underlined.

I have this in the CSS:

a {
text-align: left !important;
color: windowtext;
text-decoration: none !important;
cursor: default;
font-weight: inherit;
font-size: inherit;
font-family: inherit;
}

a[href] {
color: blue;
text-decoration: underline; cursor: pointer; }


I've also tried a bunch of additional specific selectors to turn this off and so far nothing has worked. They are not blue or underlined in any other reader I've tested.

Is this just a flaw in the Sony reader, or is there some secret trick I'm missing?