:root{color-scheme:light dark;height:100vh;--bckg-colour:#F5F5FF;--content-text-colour:#000000;--header-h2-colour:#53676c;--sub-bckg-colour:#FDFDFF;--sub-content-text-colour:#000000}@media (prefers-color-scheme:dark){:root{--bckg-colour:#3F3F3F;--content-text-colour:#CCCCCC;--header-h2-colour:#53676c;--sub-bckg-colour:#5F5F5F;--sub-content-text-colour:#DFDFDF}nav.breadcrumbs>ul>li>a:visited{color:#7f50b4}div.pageContents a:link{color:#8ab4f8}div.pageContents a:visited{color:#905acb}div.pageContents a:hover{color:#8addf8}div.areaSection a:link,div.fancybox a:link{color:#418efa}div.areaSection a:visited,div.fancybox a:visited{color:#a26af0}div.areaSection a:hover,div.fancybox a:hover{color:#3ec7f3}mark{background:#000000;color:#ffff00}}*{box-sizing:border-box}body{box-sizing:border-box;background:var(--bckg-colour);color:var(--content-text-colour);margin:0;font-size:15px;min-height:100%;display:flex;flex-flow:column;overflow-wrap:break-word}body>header,body>footer,aside.siteMap>div>h2{background:#53676c}body>header,body>nav,body>article{flex-grow:0;flex-shrink:1}body>footer{flex-grow:1;flex-shrink:0;height:100%}body>header.siteHeader{order:1}body>nav.siteNav{order:2}body>aside.messages{order:3}body>article.pageArticle{order:4}body>footer.siteFooter{order:5}header.siteHeader>div>h1,header.sectionHeader h2{font-family:"Encode Sans SC",serif}nav.pageTableOfContents h2,header.pageHeader,header.sectionHeader h4,header.sectionHeader h6{font-family:"Encode Sans SC",serif}aside.messages>ul.messageSelect,nav.users,nav.siteNav,nav.breadcrumbs,header.siteHeader>div>div.topBar,header.sectionHeader,header.areaSectionHeader,nav.bottomSiteNav>ul>li>div,nav.bottomSiteNav>ul>li>a,div.slideshowItem>div.slideshowText,aside.utility,aside.smallUtility,aside.siteMap h2.header,aside.siteMap div.closeSiteMap,blockquote.quotation>div{font-family:"Palanquin",serif}body,div.mediaGroup>figure>figcaption{font-family:"Work Sans",sans-serif}.hide{display:none}header.siteHeader span.above,header.pageHeader span.above,header.sectionHeader span.above{display:inline}header.siteHeader span.above::after,header.pageHeader span.above::after,header.sectionHeader span.above::after{content:"";display:block}header.siteHeader span.below,header.pageHeader span.below,header.sectionHeader span.below{display:block}header.siteHeader>div,nav.siteNav>div,nav.breadcrumbs>ul,header.pageHeader>div,div.pagePseudoHeader>div,div.pageContents>div,nav.bottomSiteNav>ul,aside.messages>ul,footer.siteFooter>div,aside.utility>div,aside.siteMap>div>nav{width:1210px;margin:0 auto}.alignCentre{display:flex;flex-direction:column;align-items:center;clear:both}.floatLeft{clear:left;float:left;margin-right:1em;margin-bottom:0.5em}.floatRight{clear:right;float:right;margin-left:1em;margin-bottom:0.5em}.clearBoth,div.pageContents section{clear:both}.clearNone,section.clearNone,div.pageContents section.clearNone{clear:none}.clearLeft,section.clearLeft,div.pageContents section.clearLeft{clear:left}.clearRight,section.clearRight,div.pageContents section.clearRight{clear:right}a[href$='.pdf']{padding:5px 20px 2px 0;background:url('../interface/pdf.png') no-repeat center right}header.siteHeader a:link,header.pageHeader a:link,div.expandMenu>ul a:link,div.pagePseudoHeader a:link,footer.siteFooter a:link,aside.siteMap a:link{color:#EEEEEE}header.pageHeader a:visited,div.pagePseudoHeader a:visited,footer.siteFooter a:visited,aside.siteMap a:visited{color:#999999}header.siteHeader a:visited,div.expandMenu>ul a:visited{color:#CCCCCC}header.siteHeader a:hover,header.pageHeader a:hover,div.pagePseudoHeader a:hover,footer.siteFooter a:hover,aside.siteMap a:hover{color:#CC0000}header.siteHeader a:active,header.pageHeader a:active,div.pagePseudoHeader a:active,footer.siteFooter a:active,aside.siteMap a:active{color:#00FFFF}img.icon{font-size:inherit;max-height:1em;vertical-align:sub}div.utility,a.utility{margin:0.1em;border-radius:5px;text-decoration:none;font-size:100%;background:#DFDFDF;padding:0px 2px;border:0.1em solid #DFDFDF;border-radius:0.2em}a.linkIcon::before{font-family:"Open sans";content:"⚓"}a.anchor{margin-right:2px}div.showHideButton{padding:0 0.1em 0 0.2em;cursor:pointer;color:#000000}div.showHideButton.collapse::before{content:"🗕"}div.showHideButton.expand::before{content:"🗖"}div.collapsibleArea{display:block}div.collapsibleArea.hide{display:none}aside.messages>ul>li>div:nth-child(3):hover::before,div.utility:hover,a.utility:hover{background:#FFFFFF;color:#500000;border-color:#500000}hr{display:grid;grid-template-columns:auto auto;max-width:80%;height:5px;border:1px solid #500000;border-radius:2em}hr::before{content:"";background:repeating-linear-gradient(45deg,#500000,#500000 5px,#FFFFFF 5px,#FFFFFF 10px)}hr::after{content:"";background:repeating-linear-gradient(-45deg,#500000,#500000 5px,#FFFFFF 5px,#FFFFFF 10px)}div.aside{max-width:30%}div.areaContainer{display:grid;max-width:100%;grid-template-columns:2em auto;margin-top:1em}div.areaContainer>div:nth-child(1){display:flex;flex-direction:column;align-items:center;padding:0.5em}div.areaContainer>*:nth-child(2){min-width:0}div.areaContainer>*:nth-child(2)>*:first-child{margin-top:0}blockquote.quotation{margin-right:3em;margin-left:3em;margin-bottom:2em}blockquote.quotation.top>div:first-of-type::before{content:"";width:50px;height:50px;margin:0 10px 10px 0;background-image:url(../interface/quotation.svg);background-position:top left;background-repeat:no-repeat;background-size:contain;float:left}blockquote.quotation>footer{text-align:right}blockquote.quotation>footer::before{content:"- "}div.areaContainer>div>figure.equation{margin-left:10px}figure.equation>div.lines{display:table}figure.equation>div.lines>div{display:table-row}figure.equation>div.lines>div>span{display:table-cell;white-space:pre-wrap}figure.equation>div.lines>div>span:first-child{text-align:right}pre.preformat{overflow:auto;max-width:100%}sup.note{margin-right:0.2em}ul.notes{padding-left:0.5em;font-size:100%;list-style-type:none;display:table}ul.notes>li{margin-bottom:0.5em;display:table-row}ul.notes>li::before{content:attr(data-id) ".";padding-right:0.5em;text-align:right;vertical-align:top;display:table-cell}ul.notes>li>div{display:table-cell;padding-bottom:0.5em}ul.notes>li>div>.caret,ul.notes>li>div>.link{margin-right:3px;display:inline-block}ul.notes>li>div>.caret{margin-left:0em}ul.notes>li>div>span>*:first-child{margin-top:0}ul.notes>li>div>span>*:last-child{margin-bottom:0}ul.notes>li>div>div.contents{display:inline}ul.notes>li>div>div.contents>div{display:inline}ul.notes>li>div>div.contents>div>:first-child{margin-top:0;padding-top:0;display:inline}ul.notes>li>div>div.contents>div>:last-child{margin-bottom:0;padding-bottom:0}div.columns2,div.columns3,div.columns4,div.columns5{clear:both;display:grid;gap:0.5em 1.5em}div.columns2{grid-template-columns:repeat(auto-fit,minmax(410px,1fr))}div.columns3{grid-template-columns:repeat(auto-fit,minmax(310px,1fr))}div.columns4{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}div.columns5{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}.columnSpan2{grid-column:span 2}.columnSpan3{grid-column:span 3}.columnSpan4{grid-column:span 4}.columnSpan5{grid-column:span 5}.rowSpan{grid-row-end:span var(--row-span)}div.fancyBoxContainer{gap:0em;margin-top:0.25em}div.fancybox,a.fancybox{text-decoration:none;color:var(--sub-content-text-colour);font-weight:normal;background:var(--sub-bckg-colour);padding:0.25em;display:flex;align-items:stretch}.fancybox>div,.fancybox>div>div{background:transparent}.fancybox.custom_height{min-height:var(--height)}.fancybox>div.custom_text_colour{color:var(--text-colour)}.fancybox:hover>div.custom_text_colour_hover{color:var(--text-colour-hover)}.fancybox.custom_bckg_colour,.fancybox>div.custom_bckg_colour{background-color:var(--bckg-colour)}.fancybox.custom_bckg_colour_hover:hover,.fancybox:hover>div.custom_bckg_colour_hover{background-color:var(--bckg-colour-hover)}.fancybox.custom_bckg_img,.fancybox>div.custom_bckg_img{background-image:var(--bckg-image);background-origin:border-box}.fancybox.custom_bckg_img_hover:hover,.fancybox:hover>div.custom_bckg_img_hover{background-image:var(--bckg-image-hover);background-origin:border-box}.fancybox>div{flex-grow:1;padding:0.5em;display:flex}div.fancybox>div{border-width:1px;border-style:solid;border-color:#EAEAFF}a.fancybox>div{border-width:2px;position:relative;border-style:dashed;border-color:#8888FF;color:#000000}a.fancybox:visited>div{border-color:#550000}a.fancybox:hover>div{border-color:#DD0000}a.fancybox,table.prettytable{background:#FFFFFF}.fancybox .fancyboxtitle{margin:0 0 0.75em 0;text-transform:uppercase;font-size:1.15em}.fancybox>div>div.icon>img{margin-right:0.5em;max-height:6em}.fancybox>div>div>div.title{font-size:120%;text-transform:uppercase}.fancybox>div>div>div.title>div.above,.fancybox>div>div>div.title>div.bottom{font-size:80%}.fancybox>div>div>*:last-child{margin-bottom:0;padding-bottom:0}div.expandMenu{position:relative}div.expandMenu>ul{list-style:none;z-index:10;padding-left:0}div.expandMenu>ul a{display:block}div.expandMenu>ul li>div{cursor:pointer}div.expandMenu>ul>li{display:inline-block;margin-left:1em}div.expandMenu>ul>li:first-child{margin-left:0em}div.expandMenu>ul>li>*{font-weight:bold;color:#FFFFFF}div.expandMenu>ul li>a>span.icon,div.expandMenu>ul li>div>span.icon{margin-right:0.4em;text-decoration:none;display:inline-block}div.expandMenu>ul>li>a>span.caret::after,div.expandMenu>ul>li>div>span.caret::after{margin-left:0.5em;content:"▾";text-decoration:none;display:inline-block}div.expandMenu>ul>li>ul{display:none;position:absolute;background:rgba(50,50,50,.9);padding:0;border:1px solid #222222;box-shadow:0 1em 1em rgba(0,0,0,.3);border-radius:0 0 0.5em 0.5em;list-style-type:none;z-index:10}div.expandMenu>ul>li:last-child>ul{right:0}div.expandMenu>ul>li:first-child>ul{right:auto}div.expandMenu>ul>li>ul ul{padding:0;margin-bottom:0.5em;list-style-type:none}div.expandMenu>ul>li>ul ul>li>*{margin-left:3em}div.expandMenu>ul>li:hover>ul,div.expandMenu>ul>li>ul>li:hover>ul{display:block}div.expandMenu>ul>li:hover>ul>li>a,div.expandMenu>ul>li:hover>ul>li>div{padding:0.5ex 2em 0.8ex 1.5em}div.expandMenu>ul>li:hover>ul>li:hover>a,div.expandMenu>ul>li:hover>ul>li:hover>div,div.expandMenu>ul>li>ul>li>ul>li:hover{background:#666666}header.siteHeader a:link,header.siteHeader a:hover{font-weight:bold;color:#FFFFFF}header.siteHeader>div{display:grid;grid-template-columns:auto auto;grid-template-rows:auto auto auto;padding-bottom:0.5ex}header.siteHeader>div>h1{margin:0;padding-top:0.5ex;padding-bottom:0.3ex;font-weight:normal;color:#FFFFFF;font-size:200%;text-shadow:#000000 0px 0px 0.8em;grid-row-end:span 3;display:flex;align-items:center}header.siteHeader>div h1 a:link{text-decoration:none;font-weight:normal}header.siteHeader>div h1 a:visited{color:#FFFFFF}header.siteHeader>div h1>a{padding-right:0.25ex;display:flex;justify-content:center;align-items:center}header.siteHeader h1 div.logo{max-width:150px}header.siteHeader h1 div.logo>img{display:block;max-width:100%;height:auto}header.siteHeader h1 div.text{display:flex;flex-direction:column;justify-content:center;padding-left:0.2em}header.siteHeader h1 div.text>div.above{font-size:60%}header.siteHeader div.top{justify-self:end;align-items:center;display:flex;font-size:110%}header.siteHeader div.top>*{margin-left:0.5em}header.siteHeader div.middle{justify-self:end;padding-top:0.5ex;max-width:100%}header.siteHeader div.middle>form{display:grid;grid-template-columns:minmax(100px,1fr) 35px;grid-template-rows:2em;max-width:100%}header.siteHeader div.middle>form>input[type="text"]{font-size:120%;height:100%;border:0.1em #FFFFFF solid;border-left:0.2em #FFFFFF solid}header.siteHeader div.middle>form>button[type="submit"]{background:#FFFFFF;border:0.1em #FFFFFF solid;cursor:pointer;padding:0}header.siteHeader div.middle>form>button[type="submit"]>img{height:100%}header.siteHeader div.bottom{padding-top:0.3ex;justify-self:end}header.siteHeader div.bottom nav{align-self:flex-end}header.siteHeader div.bottom nav>div>ul{margin:0}header.siteHeader div.bottom nav>div>ul>li{margin-top:0.3em;margin-left:2em;margin-bottom:0.3em}nav.siteNav{background:#000000}nav.siteNav>div{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:stretch}nav.siteNav div.expandMenu>ul{margin:0}nav.siteNav div.expandMenu>ul>li{margin:0}nav.siteNav a.siteMapLink,nav.siteNav div.expandMenu>ul>li>a,nav.siteNav div.expandMenu>ul>li>div{font-size:120%;padding:0.5em 0.75em}nav.siteNav div.expandMenu>ul>li>a:hover,nav.siteNav div.expandMenu>ul>li>div:hover{background:#666666}nav.siteNav div.expandMenu>ul>li>a:visited{color:#DDDDDD}nav.breadcrumbs{background:#DDDDDD;color:#000000}nav.breadcrumbs a{display:block}nav.breadcrumbs ul{list-style:none;padding-left:0}nav.breadcrumbs>ul>li{display:inline-block;font-size:110%}nav.breadcrumbs>ul>li>div,nav.breadcrumbs>ul>li>a{display:inline-block;font-size:100%;font-weight:bold;padding:1ex 0.5em}nav.breadcrumbs>ul>li>span,nav.breadcrumbs>ul>li>span{display:inline-block;padding:0 0.1em}nav.breadcrumbs>ul>li>span>span,nav.breadcrumbs>ul>li>span>span{display:inline-block;width:0;height:0;border-top:0.3em solid transparent;border-bottom:0.3em solid transparent;border-left:0.75em solid #000000}nav.breadcrumbs>ul>li:last-child>span,nav.breadcrumbs>ul>li:last-child>span{display:inline-block;padding-left:0}nav.breadcrumbs>ul>li:last-child>span>span,nav.breadcrumbs>ul>li:last-child>span>span{display:inline-block;width:0;height:0;border:none}nav.breadcrumbs>ul>li>a:hover{color:#FFFFFF;background:#666666}header.pageHeader,div.pagePseudoHeader{background:#2F2F2F;color:#FFFFFF}header.pageHeader>div{padding:1ex 0}header.pageHeader>div>h1{background:none;font-size:220%;margin:0;text-align:center}header.pageHeader>div>h1>span.above{font-size:75%;text-align:center;font-weight:bold}header.pageHeader>div>h1>span.below{font-size:60%;text-align:center}header.pageHeader>div.img{position:relative;padding:0}header.pageHeader>div.img>figure{position:relative;margin:0}header.pageHeader>div.img>figure>img{max-width:100%;display:block}header.pageHeader>div.img>h1{position:absolute;bottom:0ex;padding-left:1em;padding-bottom:0.75ex;font-size:220%;margin:0;text-align:left;text-shadow:#000000 2px 2px 15px,#000000 2px -2px 15px,#000000 -2px 2px 15px,#000000 -2px -2px 15px}header.pageHeader>div.img>h1>span.above{text-align:left}header.pageHeader>div.img>h1>span.below{text-align:left}header.pageHeader>div.img>figure>figcaption{position:absolute;right:1em;top:1ex;text-shadow:#000000 2px 2px 15px,#000000 2px -2px 15px,#000000 -2px 2px 15px,#000000 -2px -2px 15px;font-size:95%}header.pageHeader>div.img>figure>figcaption>a{color:#7DFFFF}header.pageHeader>div.img>figure>figcaption>a:visited{color:#CCCCCC}header.pageHeader>div.img>figure>figcaption>a:hover{color:#FF0000}div.pagePseudoHeader{padding-top:1ex;padding-bottom:1ex}div.pageContents{padding-top:1ex;padding-bottom:2ex}div.pageContents::after{display:block;content:'';clear:both}header.sectionHeader{margin-bottom:0.3em;margin-top:0.5em}div.pageContents section.lvl2>header.sectionHeader{margin-top:1.2em}div.pageContents section.lvl3>header.sectionHeader{margin-top:1em}div.pageContents div.columns2>*>header.sectionHeader,div.pageContents div.columns3>*>header.sectionHeader,div.pageContents div.columns4>*>header.sectionHeader,div.pageContents div.columns5>*>header.sectionHeader{margin-top:0.5em}header.sectionHeader>*{display:inline;vertical-align:text-top}header.sectionHeader h2,header.sectionHeader h3,header.sectionHeader h4,header.sectionHeader h5,header.sectionHeader h6{font-size:100%;margin:0}nav.pageTableOfContents>header.sectionHeader h2,nav.pageTableOfContents>header.sectionHeader h3,nav.pageTableOfContents>header.sectionHeader h4,nav.pageTableOfContents>header.sectionHeader h5{border-bottom-color:var(--header-h2-colour)}div.pageContents section.lvl2>header.sectionHeader>h2{font-size:250%}aside.siteMap section.lvl2>header.sectionHeader>h2{font-size:140%}div.pageContents section.lvl2>header.sectionHeader>h3{font-size:200%}aside.siteMap section.lvl2>header.sectionHeader>h3{font-size:120%}section.lvl3>header.sectionHeader{font-size:180%}section.lvl4>header.sectionHeader{font-size:150%}section.lvl5>header.sectionHeader{font-size:150%}section.lvl6>header.sectionHeader{font-size:110%}header.sectionHeader .below,header.sectionHeader .above{font-size:15px}section.lvl5>header.sectionHeader .below,section.lvl5>header.sectionHeader .above,section.lvl6>header.sectionHeader .below,section.lvl6>header.sectionHeader .above{font-size:13px}section>header.sectionHeader.img>h1,section>header.sectionHeader.img>h2,section>header.sectionHeader.img>h3,section>header.sectionHeader.img>h4,section>header.sectionHeader.img>h5,section>header.sectionHeader.img>h6{display:none}header.sectionHeader>img{margin-top:0.2em}header.sectionHeader>div.misc{margin-left:0.2em;font-size:80%}header.sectionHeader>div.misc:first-of-type{margin-left:0.2em}header.sectionHeader>div.showHideButton{margin-right:0.3em;font-size:10px}header.sectionHeader>a.secLink{margin-right:1em;font-size:10px}div.areaSection{border:#FFEEEE 1px solid;color:var(--sub-content-text-colour);background:var(--sub-bckg-colour);margin-top:1em}div.areaSection>div{background:#500000;padding-top:0.5em}div.areaSection>section{margin:0.5em 1em}div.areaSection.custom_height{min-height:var(--height)}div.areaSection.custom_text_colour>section>div.contents{color:var(--text-colour)}div.areaSection.custom_text_colour_hover:hover>section>div.contents{color:var(--text-colour-hover)}div.areaSection.custom_bckg_colour,div.areaSection>div.custom_bckg_colour{background-color:var(--bckg-colour)}div.areaSection.custom_bckg_colour_hover:hover,div.areaSection:hover>div.custom_bckg_colour_hover{background-color:var(--bckg-colour-hover)}div.areaSection.custom_bckg_img,div.areaSection>div.custom_bckg_img{background-image:var(--bckg-image);background-origin:border-box}div.areaSection.custom_bckg_img_hover:hover,div.areaSection:hover>div.custom_bckg_img_hover{background-image:var(--bckg-image-hover);background-origin:border-box}header.areaSectionHeader{font-size:150%;margin-right:0.2em}header.areaSectionHeader>*{display:inline}header.areaSectionHeader>img{margin-left:0.1em;margin-top:0.1em;margin-bottom:0.1em}header.areaSectionHeader>img.icon{margin-right:0.1em}header.areaSectionHeader>div.misc{margin-top:0.1em;margin-left:0.2em;font-size:90%}header.areaSectionHeader>div.misc:first-of-type{margin-left:0.2em}nav.pageTableOfContents{margin-bottom:2em}nav.pageTableOfContents>header.sectionHeader h2{font-size:220%;margin:0 0 0 0.25em;border-bottom-width:4px;border-bottom-style:solid}aside.messages{background-image:repeating-linear-gradient(45deg,#ffdd55,#ffdd55 25px,#000000 25px,#000000 50px);display:none}aside.messages>ul{list-style-type:none;padding:0}aside.messages>ul.messageList>li{padding:0.1em 0.2em;font-size:90%;max-width:100%;background:rgba(220,220,220,.97);display:none}aside.messages>ul.messageList>li>div:nth-child(1){display:flex;flex-direction:column;align-items:center;max-width:10%}aside.messages>ul.messageList>li>div:nth-child(1)>img{margin:0.5em 0 0.5em 0.5em;max-height:3em;max-width:100%}aside.messages>ul.messageList>li>div:nth-child(2){margin:0.5em 1em;flex-grow:1;font-weight:bold}aside.messages>ul.messageList>li>div:nth-child(3){padding:0.7em 0.1em 0.1em 0.1em}aside.messages>ul.messageList>li>div:nth-child(3)::before{content:"✖";color:#F8F8FF;background:#444444;border-radius:0.3em;padding:0.3em 0.5em;font-size:110%;cursor:pointer;border:0.1em solid #444444}aside.messages>ul.messageSelect{display:flex;margin-bottom:0.1em;flex-wrap:wrap;justify-content:flex-end}aside.messages>ul.messageSelect>li{color:#F8F8FF;background:#444444;padding:0.1em 0.4em;margin-left:0.5em;cursor:pointer;font-weight:bold}aside.messages>ul.messageSelect>li.show{background:rgba(220,220,220,.97);color:#000000}footer.siteFooter{padding-top:0.5em;padding-bottom:2.5em;color:#FFFFFF}footer.siteFooter>div{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:space-between}footer.siteFooter>div>div{margin-top:1ex;margin-bottom:2ex}footer.siteFooter>div>div.cred{display:flex;flex-direction:row;align-items:flex-start}footer.siteFooter>div>div.cred>img{margin-right:0.5em;max-width:50px;flex-shrink:0;align-self:center}footer.siteFooter span.copyright{margin-right:0.2em}footer.siteFooter>div>div.mod{text-align:right}nav.bottomSiteNav>ul{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;list-style-type:none;padding-left:0}nav.bottomSiteNav>ul>li{padding:0.5em 1em}nav.bottomSiteNav>ul>li>ul{list-style-type:disc;padding-left:1.5em}nav.bottomSiteNav>ul>li>ul>li{margin-top:0.25ex;margin-bottom:0.25ex}aside.utility{position:fixed;bottom:0;width:100%;background:#000000;color:#FFFFFF;font-weight:bold;z-index:50}aside.utility>div{display:flex;flex-wrap:wrap;justify-content:flex-end}aside.utility>div>*{padding:0.75em 0.75em;cursor:pointer;color:#FFFFFF;font-weight:bold}aside.utility>div>*:hover{background:#666666}aside.utility>div>a.backToTop>div{display:block;width:1em;height:1em;border-left:0.66em solid transparent;border-right:0.66em solid transparent;border-bottom:1em solid #F8F8FF}aside.smallUtility{display:none;position:absolute;top:0;right:1em}aside.smallUtility>div{cursor:pointer;font-size:2em}a.siteMapLink{cursor:pointer;text-decoration:none;color:#FFFFFF}a.siteMapLink:hover{background:#666666}aside.siteMap{display:none;position:fixed;width:100%;height:100%;background:rgba(0,0,0,0.9);z-index:100;color:#FFFFFF}aside.siteMap a:link{color:#FFFFFF}aside.siteMap a:visited{color:#AAAAAA}aside.siteMap>div{display:flex;flex-direction:column;align-content:stretch;height:100%}aside.siteMap>div>h2{margin:0;padding:0.25em 0.25em 0.4em 0.25em;text-align:center;font-size:200%;flex-grow:0;cursor:pointer}aside.siteMap>div>nav{flex-grow:1;overflow-y:auto;margin-top:1em;margin-bottom:1em}aside.siteMap>div>div.closeSiteMap{width:100%;text-align:center;cursor:pointer;font-size:150%;padding:0.25em;background:#303030;flex-grow:0}aside.siteMap>div>div.closeSiteMap:hover{background:#666666}aside.siteMap .utility{color:#000000}aside.siteMap .secLink{display:none}aside.siteMap ul{padding-left:1.5em}aside.siteMap li{margin-bottom:0.2em}div.mediaGroup.horizontal{display:flex;flex-direction:row;flex-wrap:wrap}div.mediaGroup.horizontal.alignCentre{align-items:flex-start;justify-content:center}div.mediaGroup.floatLeft,div.mediaGroup.floatRight{max-width:525px}div.mediaGroup.floatRight{justify-content:flex-end}div.mediaGroup>figure{display:table;padding:0em;margin:0.5em 0.4em}div.mediaGroup>figure>*{display:block}div.mediaGroup>figure img{max-width:250px;width:99%;border:2px solid #DDDDDD}div.mediaGroup>figure>a.img.icon,div.mediaGroup>figure>a.page.icon,div.mediaGroup>figure>a.video.icon{position:relative}div.mediaGroup>figure>a.img.icon::after,div.mediaGroup>figure>a.page.icon::after,div.mediaGroup>figure>a.video.icon::after{content:"";position:absolute;z-index:10;width:100%;height:100%;background-color:transparent;background-repeat:no-repeat}div.mediaGroup>figure>a.img.icon::after,div.mediaGroup>figure>a.page.icon::after{bottom:10px;right:10px;background-position-x:right;background-position-y:bottom;background-size:50px}div.mediaGroup>figure>a.img.icon::after{background-image:url("../interface/zoom.svg")}div.mediaGroup>figure>a:hover.img.icon::after{background-image:url("../interface/zoom_hover.svg")}div.mediaGroup>figure>a.page.icon::after{background-image:url("../interface/page.svg")}div.mediaGroup>figure>a:hover.page.icon::after{background-image:url("../interface/page_hover.svg")}div.mediaGroup>figure>a.video.icon::after{top:0;left:0;background-image:url("../interface/play.svg");background-position-x:center;background-position-y:center;background-size:75px}div.mediaGroup>figure>a:hover.video.icon::after{background-image:url("../interface/play_hover.svg")}div.mediaGroup>figure>a img{border:2px dashed #AA0000}div.mediaGroup>figure>a:visited img{border:2px dashed #DD8888}div.mediaGroup>figure>a:hover img{border:2px dashed #FF0000}div.mediaGroup>figure>figcaption{display:table-caption;caption-side:bottom;margin-top:0.4em;font-size:90%}div.mediaGroup>figure>figcaption>.anchor{float:left}div.mediaGroup>figure>figcaption>*:first-child,div.mediaGroup>figure>figcaption>div>*:first-child{margin-top:0em}div.slideshow>div{border-radius:1em;overflow:hidden;border:2px solid #222222}div.slideshowItem{position:relative}div.slideshowItem>div.slideshowText{display:inline-block;position:absolute;bottom:0;left:0;width:100%;color:#FFFFFF;background:rgba(0,0,0,0.5);padding:3px 5px 3px 20px;font-size:1.3em;text-shadow:#000000 0px 0px 10px}div.slideshowItem>div.slideshowText>*{background:none}div.slideshow>ul>li>button::before{opacity:1;border-radius:0.25em;color:#DDDDDD;background:#AAAAAA}div.slideshow>ul>li.slick-active>button::before{opacity:1;border-radius:0.25em;color:#FFFFFF;background:#AA0000}@media (prefers-color-scheme:dark){.gslide-description{background:#000000!important}}@media all and (max-width:1230px){header.siteHeader>div,nav.siteNav>div,nav.breadcrumbs>ul,header.pageHeader>div,div.pagePseudoHeader>div,div.pageContents>div,nav.bottomSiteNav>ul,aside.messages>ul,footer.siteFooter>div,aside.utility>div,aside.siteMap>div>nav{width:auto;max-width:1190px;margin-left:10px;margin-right:10px}}@media all and (max-width:810px){header.siteHeader>div{grid-template-columns:99%;grid-template-rows:auto}header.siteHeader>div>h1,header.siteHeader>div>div.top,header.siteHeader>div>div.middle,header.siteHeader>div>div.bottom{justify-self:center}header.siteHeader>div>h1{grid-row-end:span 1}}@media all and (max-width:610px){header.siteHeader>div>h1{padding-right:0.75em}nav.siteNav,nav.bottomSiteNav,aside.utility,nav.breadcrumbs.top{display:none}aside.smallUtility{display:block}footer.siteFooter{padding-bottom:0}header.pageHeader>div{margin:0}header.pageHeader>div.img>figure>img{max-width:610px;overflow:hidden}header.pageHeader>div.img>figure>figcaption{display:none}header.pageHeader>div.img>h1{text-align:center;padding-left:0.5em;padding-right:0.5em;width:100%}}@media all and (max-width:550px){div.aside{max-width:none}div.mediaGroup.floatLeft,div.mediaGroup.floatRight,.floatLeft,.floatRight{display:flex;flex-direction:row;flex-wrap:wrap;clear:none;float:none;justify-content:center;margin:0;max-width:none}footer.siteFooter>div>div.mod{text-align:left}}@media all and (max-width:295px){header.siteHeader h1 div.text{display:none}}@media all and (max-width:820px){div.columns2>.columnSpan2{grid-column:span 1}}@media all and (max-width:410px){div.columns2{grid-template-columns:100vw}}@media all and (max-width:930px){div.columns3>.columnSpan3{grid-column:span 2}div.columns3>.columnSpan2{grid-column:span 1}}@media all and (max-width:620px){div.columns3>.columnSpan3{grid-column:span 1}}@media all and (max-width:310px){div.columns3{grid-template-columns:100vw}}@media all and (max-width:1000px){div.columns4>.columnSpan4{grid-column:span 3}div.columns4>.columnSpan3{grid-column:span 2}div.columns4>.columnSpan2{grid-column:span 1}}@media all and (max-width:750px){div.columns4>.columnSpan4{grid-column:span 2}div.columns4>.columnSpan3{grid-column:span 1}}@media all and (max-width:500px){div.columns4>.columnSpan4{grid-column:span 1}}@media all and (max-width:250px){div.columns4{grid-template-columns:100vw}}@media all and (max-width:1050px){div.columns5>.columnSpan5{grid-column:span 4}div.columns5>.columnSpan4{grid-column:span 3}div.columns5>.columnSpan3{grid-column:span 2}div.columns5>.columnSpan2{grid-column:span 1}}@media all and (max-width:840px){div.columns5>.columnSpan5{grid-column:span 3}div.columns5>.columnSpan4{grid-column:span 2}div.columns5>.columnSpan3{grid-column:span 1}}@media all and (max-width:630px){div.columns5>.columnSpan5{grid-column:span 2}div.columns5>.columnSpan4{grid-column:span 1}}@media all and (max-width:420px){div.columns5>.columnSpan5{grid-column:span 1}}@media all and (max-width:210px){div.columns5{grid-template-columns:100vw}}