Update core.css, add se.css, and update SE boilerplate files

src/epub/content.opf

@@ -159,6 +159,7 @@
 		<item href="toc.xhtml" id="toc.xhtml" media-type="application/xhtml+xml" properties="nav"/>
 		<item href="css/core.css" id="core.css" media-type="text/css"/>
 		<item href="css/local.css" id="local.css" media-type="text/css"/>
+		<item href="css/se.css" id="se.css" media-type="text/css"/>
 		<item href="images/cover.svg" id="cover.svg" media-type="image/svg+xml" properties="cover-image"/>
 		<item href="images/logo.svg" id="logo.svg" media-type="image/svg+xml"/>
 		<item href="images/titlepage.svg" id="titlepage.svg" media-type="image/svg+xml"/>

src/epub/css/core.css

@@ -2,6 +2,7 @@
 @namespace epub "http://www.idpf.org/2007/ops";
 
 body{
+	font-variant-numeric: oldstyle-nums;
 	hyphens: auto;
 	-epub-hyphens: auto;
 }
@@ -29,7 +30,8 @@ h2,
 h3,
 h4,
 h5,
-h6{
+h6,
+hgroup{
 	font-variant: small-caps;
 	hyphens: none;
 	-epub-hyphens: none;
@@ -39,6 +41,15 @@ h6{
 	margin: 3em 0;
 }
 
+hgroup > *{
+	font-weight: normal;
+	margin: 0;
+}
+
+hgroup > *:first-child{
+	font-weight: bold;
+}
+
 blockquote + p,
 h2 + p,
 h3 + p,
@@ -50,7 +61,9 @@ hr + p,
 ol + p,
 ul + p,
 table + p,
+hgroup + p,
 p:first-child{
+	hanging-punctuation: first last;
 	text-indent: 0;
 }
 
@@ -107,94 +120,3 @@ a[epub|type~="noteref"]{
 section[epub|type~="endnotes"] > ol > li{
 	margin: 1em 0;
 }
-
-section[epub|type~="colophon"],
-section[epub|type~="imprint"]{
-	text-align: center;
-}
-
-section[epub|type~="colophon"] header,
-section[epub|type~="imprint"] header{
-	line-height: 0;
-	margin-top: 3em;
-}
-
-section[epub|type~="colophon"] h2,
-section[epub|type~="imprint"] h2{
-	display: none;
-}
-
-img[epub|type~="z3998:publisher-logo"]{
-	max-width: 25%;
-}
-
-section[epub|type~="colophon"] p,
-section[epub|type~="imprint"] p{
-	margin: 1em auto 0 auto;
-	text-indent: 0;
-}
-
-section[epub|type~="imprint"] p{
-	font-size: .75em;
-	text-align: justify;
-	width: 75%;
-}
-
-section[epub|type~="colophon"] p + p::before{
-	border-top: 1px solid;
-	content: "";
-	display: block;
-	margin: auto auto 1em auto;
-	width: 25%;
-}
-
-section[epub|type~="colophon"] a{
-	font-variant: small-caps;
-}
-
-section[epub|type~="imprint"] a,
-section[epub|type~="colophon"] a{
-	hyphens: none;
-	-epub-hyphens: none;
-}
-
-section[epub|type~="copyright-page"] p{
-	margin: 1em auto;
-	text-indent: 0;
-}
-
-section[epub|type~="copyright-page"] blockquote p{
-	font-style: italic;
-	text-align: left;
-	text-indent: 0;
-}
-
-section[epub|type~="copyright-page"] blockquote p span{
-	display: block;
-	padding-left: 1em;
-	text-indent: -1em;
-}
-
-section[epub|type~="copyright-page"] blockquote br{
-	display: none;
-}
-
-@supports(display: flex){
-	section[epub|type~="imprint"]{
-		align-content: center;
-		display: flex;
-		flex-direction: column;
-		justify-content: center;
-		min-height: calc(98vh - 3em);
-		padding-top: 3em;
-	}
-
-	section[epub|type~="imprint"] header{
-		margin-bottom: 2em;
-		margin-top: 0;
-	}
-
-	img[epub|type~="z3998:publisher-logo"]{
-		max-width: 25vw;
-	}
-}

src/epub/css/se.css

@@ -0,0 +1,93 @@
+@charset "utf-8";
+@namespace epub "http://www.idpf.org/2007/ops";
+
+section[epub|type~="colophon"],
+section[epub|type~="imprint"]{
+	text-align: center;
+}
+
+section[epub|type~="colophon"] header,
+section[epub|type~="imprint"] header{
+	line-height: 0;
+	margin-top: 3em;
+}
+
+section[epub|type~="colophon"] h2,
+section[epub|type~="imprint"] h2{
+	display: none;
+}
+
+img[epub|type~="z3998:publisher-logo"]{
+	max-width: 25%;
+}
+
+section[epub|type~="colophon"] p,
+section[epub|type~="imprint"] p{
+	margin: 1em auto 0 auto;
+	text-indent: 0;
+}
+
+section[epub|type~="imprint"] p{
+	font-size: .75em;
+	text-align: justify;
+	width: 75%;
+}
+
+section[epub|type~="colophon"] p + p::before{
+	border-top: 1px solid;
+	content: "";
+	display: block;
+	margin: auto auto 1em auto;
+	width: 25%;
+}
+
+section[epub|type~="colophon"] a{
+	font-variant: small-caps;
+}
+
+section[epub|type~="imprint"] a,
+section[epub|type~="colophon"] a{
+	hyphens: none;
+	-epub-hyphens: none;
+}
+
+section[epub|type~="copyright-page"] p{
+	margin: 1em auto;
+	text-indent: 0;
+}
+
+section[epub|type~="copyright-page"] blockquote p{
+	font-style: italic;
+	text-align: left;
+	text-indent: 0;
+}
+
+section[epub|type~="copyright-page"] blockquote p span{
+	display: block;
+	padding-left: 1em;
+	text-indent: -1em;
+}
+
+section[epub|type~="copyright-page"] blockquote br{
+	display: none;
+}
+
+@supports(display: flex){
+	section[epub|type~="imprint"]{
+		align-content: center;
+		display: flex;
+		flex-direction: column;
+		justify-content: center;
+		min-height: calc(98vh - 3em);
+		padding-top: 3em;
+	}
+
+	section[epub|type~="imprint"] header{
+		margin-bottom: 2em;
+		margin-top: 0;
+	}
+
+	img[epub|type~="z3998:publisher-logo"]{
+		max-width: 25vw;
+	}
+}

src/epub/text/colophon.xhtml

@@ -3,7 +3,7 @@
 	<head>
 		<title>Colophon</title>
 		<link href="../css/core.css" rel="stylesheet" type="text/css"/>
-		<link href="../css/local.css" rel="stylesheet" type="text/css"/>
+		<link href="../css/se.css" rel="stylesheet" type="text/css"/>
 	</head>
 	<body epub:type="backmatter">
 		<section id="colophon" epub:type="colophon">

src/epub/text/imprint.xhtml

@@ -3,7 +3,7 @@
 	<head>
 		<title>Imprint</title>
 		<link href="../css/core.css" rel="stylesheet" type="text/css"/>
-		<link href="../css/local.css" rel="stylesheet" type="text/css"/>
+		<link href="../css/se.css" rel="stylesheet" type="text/css"/>
 	</head>
 	<body epub:type="frontmatter">
 		<section id="imprint" epub:type="imprint">

src/epub/text/uncopyright.xhtml

@@ -3,7 +3,7 @@
 	<head>
 		<title>Uncopyright</title>
 		<link href="../css/core.css" rel="stylesheet" type="text/css"/>
-		<link href="../css/local.css" rel="stylesheet" type="text/css"/>
+		<link href="../css/se.css" rel="stylesheet" type="text/css"/>
 	</head>
 	<body epub:type="backmatter">
 		<section id="uncopyright" epub:type="copyright-page">