Checked. No funny chars that I saw. There is one problem, the href in the ch1.html link is wrong. I checked this by unzipping the epub and looking at the files directly:
Code:
<head>
<title>The Gardener of Man</title>
<link rel="stylesheet" type="text/css" href="TSOW.css"/>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
</head>
Notice no ../Styles/ as needed in the href for the stylesheet link.
Not sure how this will be imported into Sigil since the epub structure is not correct.
The correct way to to this in Sigil would be to use the link stylesheet tools just to be safe.
KevinH