/* Linux Biolinum (GPL with font exception, and OFL); see fonts/LICENCE.txt */
@font-face{font-family:"Biolinum";src:local("Linux Biolinum O"),local("Linux Biolinum"),url("fonts/LinBiolinum_R.otf") format("opentype");font-weight:normal;font-style:normal;font-display:swap}
@font-face{font-family:"Biolinum";src:local("Linux Biolinum O Bold"),url("fonts/LinBiolinum_RB.otf") format("opentype");font-weight:bold;font-style:normal;font-display:swap}
@font-face{font-family:"Biolinum";src:local("Linux Biolinum O Italic"),url("fonts/LinBiolinum_RI.otf") format("opentype");font-weight:normal;font-style:italic;font-display:swap}
/* Layout only. Calibri for text, no bold, default colours and link styles. */
body{margin:0;padding-top:var(--bar);font-family:Calibri,"Segoe UI",sans-serif;font-size:16px;line-height:1.5}
input,button,summary{font-family:Calibri,"Segoe UI",sans-serif;font-size:16px}
h3,h4,b,strong,th,summary{font-weight:normal}
h1,h2{font-weight:bold}
h1{font-size:24px;margin:0 0 12px}
h2{font-size:20px;margin:0 0 12px}
h3{font-size:16px;margin:16px 0 8px}

a,a:visited{color:inherit;text-decoration:none}
/* External links keep the standard hyperlink look */
a[href^="http"]{color:#0000ee;text-decoration:underline}
a[href^="http"]:visited{color:#551a8b}

:root{--bar:56px}
/* Top bar: white. Logo and name on the left. Search and Menu on the right. */
.topbar{position:fixed;top:0;left:0;right:0;z-index:20;box-sizing:border-box;height:var(--bar);display:flex;align-items:center;gap:16px;padding:0 16px;background:#fff;color:#000;border-bottom:1px solid #000}
.topbar a,.topbar a:visited{color:#000}
body .topbar,body .topbar input,body .topbar button{font-family:Calibri,"Segoe UI",sans-serif;font-size:16px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto;color:#000}
.brand img{display:block;height:40px;width:auto}
.nav-end{display:flex;align-items:center;gap:12px;margin-left:auto}
.topbar .search{position:relative;margin-left:0}
.topbar .search input{width:220px;height:36px;box-sizing:border-box;border:1px solid #000;background:#fff;color:#000;padding:0 8px}
.topbar .results{position:absolute;right:0;top:100%;width:240px;margin:0;padding:4px 8px;list-style:none;background:#fff;border:1px solid #000;z-index:30}
.topbar .results[hidden]{display:none}
.topbar .results a,.topbar .results a:visited{color:#000}
.topbar .results a.active{background:#eee}
.menu-drop{position:relative}
.menu-drop > button{background:#fff;color:#000;border:1px solid #000;min-height:36px;padding:6px 12px;cursor:pointer}
.menu-drop ul{display:none;position:absolute;right:0;top:100%;margin:0;padding:4px 0 0;list-style:none;min-width:220px;background:#fff;border:1px solid #000;z-index:30}
.menu-drop ul::before{content:"";position:absolute;left:0;right:0;top:-8px;height:8px}
.menu-drop:hover ul,.menu-drop:focus-within ul,.menu-drop.open ul{display:block}
.menu-drop li a{display:block;padding:10px 12px;min-height:44px;box-sizing:border-box}
.menu-drop li a:hover,.menu-drop li a[aria-current="page"]{background:#eee}

/* Landing page */
.landing{padding:48px 16px}
.buttons{display:flex;flex-wrap:wrap;gap:16px;margin-top:24px}
.buttons form{margin:0}

/* Three-part layout: menu | continuous body | meta */
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:calc(100vh - var(--bar))}
.menu{position:sticky;top:var(--bar);align-self:start;box-sizing:border-box;max-height:calc(100vh - var(--bar));overflow-y:auto;padding:0 0 16px}
.menu h1{margin:0 0 12px;padding:12px 16px;background:#b12725;color:#fff;font-size:18px;font-weight:normal}
.menu ul{margin:0;padding:0 16px;list-style:none}
.menu ul ul{padding-left:16px;margin-bottom:8px}
.menu li{margin:4px 0}
.menu a[aria-current="true"],.menu a[aria-current="true"]:visited{display:block;margin:0 -8px;padding:4px 8px;background:#b12725;color:#fff;font-weight:normal;text-decoration:none}
.layout main{border-left:1px solid #000}
.panel{display:grid;grid-template-columns:minmax(0,1fr) 260px;background-color:#fff;color:#000;background-image:linear-gradient(currentColor,currentColor);background-repeat:no-repeat;background-position:right 260px top 0;background-size:1px 100%;scroll-margin-top:var(--bar);border-top:4px solid #b12725}
.panel[hidden]{display:none}
.body{padding:16px 24px 24px}
.meta{position:sticky;top:var(--bar);align-self:start;padding:16px}
.meta ul{margin:0;padding-left:20px}
details{margin:12px 0}

/* Tables */
table{border-collapse:collapse}
th,td{border:1px solid #000;padding:6px 10px;text-align:left;vertical-align:top}

/* Landing page typeface */
body.front-page{font-family:Calibri,"Segoe UI",sans-serif}

/* Front page: navigator first, then the full-screen sunset */
.front{--sky-blur:6px;position:relative;overflow:hidden;isolation:isolate;box-sizing:border-box;display:flex;flex-direction:column;justify-content:space-between;height:calc(100vh - var(--bar) - 32px);margin:16px;padding:32px;border:1px solid #000;color:#fff}
.front::before{content:"";position:absolute;inset:calc(var(--sky-blur) * -3);z-index:-1;background:url("images/landing-sky.jpg") center / cover no-repeat;filter:blur(var(--sky-blur)) brightness(0.7)}
.front:visited,.front:hover,.front:focus{color:#fff;text-decoration:none}
.front-small{margin:0;padding-top:32px;font-size:20px}
.front-big{font-weight:normal;margin:0;font-size:clamp(32px,5.6vw,130px);line-height:1.1}
.front-sub{margin:0.4em 0 0;font-size:clamp(25.6px,4.48vw,104px);line-height:1.1}
.hero{margin:16px 16px 0}
.navigator{display:block;width:calc(100% - 32px);height:auto;margin:16px;border:1px solid #000;box-sizing:border-box}
.menu .phases{margin:0;padding:0;list-style:none}
.menu .phases > li{margin:0 0 8px}
.menu .phases a.phase-title,.menu .phases a.phase-title:visited{display:block;margin:0;padding:16px;background:#b12725;color:#fff;font-size:20px;text-decoration:none}
.menu .phases a.phase-title[aria-current="page"]{box-shadow:inset 0 -3px 0 #fff}
.menu .phases ul{margin:0;padding:8px 16px 4px;list-style:none}
.menu .phases ul ul{padding:0 0 8px 16px}
.next-stage,.next-stage:visited{display:inline-block;margin-top:12px;padding:10px 16px;background:#b12725;color:#fff;text-decoration:none}
.nw{white-space:nowrap}
.footer{padding:24px 16px;border-top:1px solid #000}
.footer p{margin:0}

/* Menu page: three panels (development phases | navigation phases | case studies) */
.menu-page{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));min-height:calc(100vh - var(--bar))}
.menu-group{padding:32px 24px;border-right:1px solid #000;border-top:4px solid #b12725}
.menu-group:last-child{border-right:0}
.menu-group h2{margin:0 0 16px;font-size:32px;scroll-margin-top:72px}
#navigation-steps{scroll-margin-top:72px}
.menu-group ul{margin:0;padding:0;list-style:none}
.menu-group li{margin:8px 0;font-size:20px}
.menu-group li ul{padding-left:24px}
.menu-group li li::before{content:"\21B3  "}

/* Policy collapsibles: grey, smaller text */
.policy{margin:16px 0;background:#d9d9d9;color:#000;font-size:13px;line-height:1.45}
.policy summary{padding:8px 12px;font-size:13px;cursor:pointer}
.policy-list{margin:0;padding:4px 12px 12px;list-style:none}
.policy-list li{margin:0 0 10px}
.policy .ref{margin-right:4px}
.policy .src,.policy .check{display:block;margin-top:2px;color:#444}
.policy a[href^="http"]{color:#0000ee}
.policy a[href^="http"]:visited{color:#551a8b}

/* Case studies: centred article that flows continuously */
.article{box-sizing:border-box;max-width:760px;margin:0 auto;padding:48px 24px 96px;font-size:18px;line-height:1.6}
.article h1{margin:0 0 16px;font-size:36px}
.article h2{margin:56px 0 8px;font-size:28px}
.article h3{margin:32px 0 8px;font-size:20px;font-weight:bold}
.article ul{margin:0 0 8px;padding-left:24px}
.article nav ul{list-style:none;padding:0}
.article .sources{margin:8px 0 0;font-size:14px}

/* Smart checklist */
.skip{position:absolute;left:-9999px;top:0;padding:8px 12px;background:#fff;z-index:30}
.skip:focus{left:8px;top:48px;border:1px solid #000}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.small{font-size:14px}
.lead{font-size:20px}
.toc ul{margin:16px 0 8px}
.toc li{margin:4px 0}
.article section{margin:0 0 56px;scroll-margin-top:57px}
.article section > h2{margin-top:48px}
.article ol{margin:0 0 8px;padding-left:24px}
.article details{margin:12px 0}
.article details > summary{cursor:pointer}
dl.terms{display:grid;grid-template-columns:200px minmax(0,1fr);gap:6px 16px;margin:8px 0;font-size:15px}
dl.terms dt{margin:0}
dl.terms dd{margin:0}
.group{margin:40px 0}
.article .group-title{margin:0 0 8px;font-size:22px}
div.check{margin:16px 0;padding:16px;border:1px solid #000;scroll-margin-top:57px}
div.check h3{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin:0 0 8px;font-size:18px}
div.check h3 .bm-btn{margin:0;flex:none}
div.check fieldset{margin:0;padding:0;border:0;min-width:0}
div.check fieldset.sub{margin:8px 0 0}
div.check legend{padding:0}
div.check legend.q{margin-bottom:6px;font-size:18px}
.help{margin:0 0 8px;font-size:15px}
.criteria-title{margin:8px 0 4px;font-size:15px}
.criteria{margin:0 0 8px;padding-left:20px;font-size:15px}
.criteria li{margin:2px 0}
.options{margin:8px 0}
.options label,div.check fieldset.sub label{display:inline-block;margin:0 24px 6px 0}
.field{display:grid;grid-template-columns:320px minmax(0,360px);gap:8px;align-items:center;margin:8px 0}
.field input,.field select{max-width:100%}
.result{margin:8px 0 0;min-height:1.4em;font-size:15px}
.rules-title,.ifno-title{margin:12px 0 4px;font-size:15px;color:#5a5a5a}
/* Rule specification blocks: light grey, no outline; dark grey content, medium dark grey labels */
details[data-rule]{margin:6px 0;padding:8px 12px;background:#f2f2f2;border:0;color:#333;font-family:Calibri,"Segoe UI",sans-serif;font-size:14px}
details[data-rule] dl.info{font-size:13px}
.chk-title{background:#d6e9fb;padding:2px 8px}
details[data-rule] > summary{cursor:pointer;color:#5a5a5a}
details[data-rule] .rd-ref{color:#5a5a5a}
.rd-policy{color:#333;text-decoration:underline;text-underline-offset:2px}
details[data-rule] .bm-row{margin:8px 0 0}
.ifno{margin-top:12px;padding-top:4px;border-top:1px dashed #000}
.ifno[hidden]{display:none}
.alt{margin:8px 0 8px 12px;padding-left:12px;border-left:1px solid #000}
.alt[hidden]{display:none}
.alt-label{margin:0 0 4px;font-size:15px;color:#5a5a5a}
.alt-note{margin:0 0 4px;font-size:15px}
dl.info{display:grid;grid-template-columns:120px minmax(0,1fr);gap:4px 12px;margin:10px 0 4px;font-size:14px;line-height:1.45}
dl.info dt{color:#5a5a5a}
dl.info dd{margin:0;color:#333}
dl.info dd.rd-meta{color:#5a5a5a}
.calc{margin:16px 0;padding:16px;border:1px solid #000}
.calc h3{margin:0 0 8px}
.calc-note{font-size:14px}
.calc-out{margin:12px 0 0;padding-left:20px}
.calc-out li{margin:4px 0}
.article table{width:100%;font-size:15px}
.article caption{text-align:left}
#summary-status{margin:0 0 16px;padding-left:20px}
#summary-status li{margin:6px 0}
.fin-state,.fin-est{white-space:nowrap}
.fin tr.off td{color:#777}
.tools button{margin:0 8px 8px 0}
.todo .status{margin:0 0 4px;padding:6px 8px;border:0;font-size:14px;line-height:1.4}
.status p{margin:0}
.status-pending,.status-unsure{background:#eee;color:#000}
.status-required{background:#c62828;color:#fff}
.status-ok{background:#2e7d32;color:#fff}
.todo{font-size:15px}
.todo h2{margin:12px 0 8px;font-size:18px}
.todo ul{margin:0;padding-left:0;list-style:none}
.todo li{margin:8px 0}
.todo details{margin:12px 0;font-size:14px}
.todo .progress-line{margin:8px 0 2px}
.todo progress{width:100%}
.todo #progress{margin:0 0 6px}
.todo .tools{display:flex;flex-wrap:nowrap;gap:3px;margin:0 0 6px}
.todo .tools button{flex:1 1 auto;margin:0;padding:2px 3px;font-size:11px;white-space:nowrap}
.todo .todo-group{margin:12px 0 4px;font-size:14px;color:#444}
.progress-box{margin:8px 0 0;padding:8px;background:#f2f2f2;border:0}
.todo .progress-box ul{margin:0}
.todo .progress-box li{margin:0}
.pg-group{padding:8px 4px 4px;font-size:13px;color:#5a5a5a}
.todo .pg-item{display:flex;justify-content:space-between;gap:8px;margin:0 0 4px;padding:6px 8px;background:#dcdcdc;border:0;font-size:14px}
.todo .pg-item.pg-done{background:#d6e9fb}
.pg-state{flex:none;font-size:12px;color:#5a5a5a}
@media print{
  .topbar,.skip,.todo .tools,.bm-panel,.bm-btn,.toc,.search,#calculators{display:none}
  body{padding-top:0}
  .layout.has-bm{display:block}
  .layout main{border-left:0}
  .todo{position:static;max-height:none;border:0}
  .status{border:1px solid #000;background:#fff;color:#000}
  details{display:block}
}

/* Bookmarks */
.bm-btn{margin:6px 0 0 8px;padding:0 6px;font-size:12px}
.policy-list .bm-btn{display:block;margin:4px 0 0}
.bm-row{margin:8px 0 0}
.bm-row .bm-btn{margin:0}
.meta{box-sizing:border-box;max-height:calc(100vh - var(--bar));overflow-y:auto}
.bm{margin-top:24px;padding-top:12px;border-top:1px solid #000;font-size:13px;line-height:1.4}
.meta .bm ul{margin:0;padding-left:0;list-style:none}
.bm h3{margin:0 0 8px}
.bm li{margin:0 0 12px}
.bm-label,.bm-excerpt{display:block}
.bm-excerpt{color:#444}
.bm-actions button,.bm-all button{margin:4px 4px 0 0;padding:0 6px;font-size:12px}
.bm-empty{margin:0}
.bm-note{display:block;margin:6px 0 0}
.bm-note span{display:block;font-size:12px;color:#5a5a5a}
.bm-note textarea{box-sizing:border-box;width:100%;min-height:44px;font-family:Calibri,"Segoe UI",sans-serif;font-size:13px}
.bm-saved{font-size:12px;color:#5a5a5a}
.layout.has-bm{grid-template-columns:280px minmax(0,1fr) 300px}
.bm-panel{position:sticky;top:var(--bar);align-self:start;box-sizing:border-box;min-height:calc(100vh - var(--bar));max-height:calc(100vh - var(--bar));overflow-y:auto;padding:16px;border-left:1px solid #000}
.bm-panel.bm{margin-top:0;border-top:0;padding-top:16px}

/* Case study articles */
.case .kicker{margin:0 0 8px;font-size:14px;color:#5a5a5a}
.case h1{margin:0 0 12px}
.case .lead{margin:0 0 24px}
dl.glance{display:grid;grid-template-columns:140px minmax(0,1fr);gap:6px 16px;margin:0 0 24px;padding:16px;background:#f2f2f2;font-size:15px}
dl.glance dt{color:#5a5a5a}
dl.glance dd{margin:0}
.case .toc-title{margin:0 0 4px;color:#5a5a5a;font-size:15px}
.case .toc ol{margin:0 0 32px;padding-left:24px}
.case section{margin:0 0 32px;scroll-margin-top:57px}
.case section h2{margin:0 0 8px;font-size:22px}
.case .sources{font-size:14px}
.case-pager{display:flex;justify-content:space-between;gap:16px;margin-top:48px;padding-top:16px;border-top:1px solid #000;font-size:15px}
.glossary{border-top:4px solid #b12725;padding-top:28px}
.glossary dt{margin:18px 0 2px;font-size:20px;font-weight:bold}
.glossary dd{margin:0}
.teaser{margin:0 0 16px;padding:16px 20px 8px;border:1px solid #cfcfcf;border-top:4px solid #b12725}
.teaser h2{margin:0 0 8px;font-size:26px}
.teaser .teaser-meta{color:#5a5a5a;font-size:15px}