/* Factual reference pages use locally hosted house fonts. */
@font-face{font-family:"WT Serif Display";src:url("/fonts/print/NewsreaderDisplay-Regular.ttf");font-weight:400;font-display:swap}
@font-face{font-family:"WT Sans";src:url("/fonts/inter-latin.woff2") format("woff2");font-weight:400 800;font-display:swap}
@font-face{font-family:"WT Mono";src:url("/fonts/jetbrains-mono-latin.woff2") format("woff2");font-weight:400 800;font-display:swap}
@font-face{font-family:"WT Wordmark";src:url("/fonts/outfit-latin.woff2") format("woff2");font-weight:400 800;font-display:swap}
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html[data-theme="dark"]{color-scheme:dark;--ref-paper:#1a1520;--ref-panel:#251f2a;--ref-ink:#f6f1ea;--ref-muted:#c2bdc6;--ref-rule:#5e5569;--ref-accent:#f0afa5;--ref-on-accent:#1a1520;--ref-teal:#9ed1c8}
*{box-sizing:border-box}.ref-page{margin:0;background:var(--ref-paper);color:var(--ref-ink);font-family:"WT Sans";font-size:17px;line-height:1.7}.ref-page a{color:var(--ref-accent);text-underline-offset:.2em;text-decoration-thickness:1px}.ref-page a:hover{text-decoration-thickness:2px}.ref-page :focus-visible{outline:3px solid var(--ref-accent);outline-offset:5px}.ref-page p,.ref-page li,.ref-page dd{overflow-wrap:anywhere}.ref-page h1,.ref-page h2,.ref-page h3{margin:0;color:var(--ref-ink);text-wrap:balance}.ref-page h1,.ref-page h2{font-family:"WT Serif Display";font-weight:400;letter-spacing:-.025em}.ref-page h1{font-size:clamp(2.8rem,5.6vw,4.6rem);line-height:1.04;max-width:17ch}.ref-page h2{font-size:clamp(1.9rem,3.2vw,2.55rem);line-height:1.15;margin-bottom:20px}.ref-page h3{font-size:1.06rem;line-height:1.45;font-weight:600;margin:25px 0 10px}.ref-page p{margin:0 0 18px;max-width:68ch}.ref-page li{margin-bottom:10px}.ref-page ul,.ref-page ol{padding-left:1.3em}.ref-container{width:min(1120px,100% - 80px);margin-inline:auto}.ref-header{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-block:24px;border-bottom:1px solid var(--ref-rule)}.ref-brand{font-family:"WT Wordmark";font-size:1.4rem;font-weight:700;letter-spacing:-.04em;text-decoration:none;color:var(--ref-ink)!important}.ref-header nav{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:.82rem}.ref-skip{position:absolute;left:20px;top:8px;transform:translateY(-160%);padding:10px 16px;background:var(--ref-panel);z-index:100}.ref-skip:focus{transform:translateY(0)}.ref-breadcrumbs{font-size:.78rem;color:var(--ref-muted);padding-top:22px}.ref-breadcrumbs ol{list-style:none;padding:0;display:flex;gap:10px;flex-wrap:wrap;margin:0}.ref-breadcrumbs li{margin:0}.ref-breadcrumbs li+li:before{content:"/";margin-right:10px;color:var(--ref-muted)}.ref-hero{padding-block:48px 52px;display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:64px}.ref-label,.ref-number{font-family:"WT Mono";font-weight:500;font-size:.75rem;line-height:1.6;letter-spacing:.08em;text-transform:uppercase;color:var(--ref-muted)}.ref-hero .ref-label{margin-bottom:20px}.ref-answer{font-size:1.11rem;line-height:1.7;margin-top:25px!important}.ref-cta{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;max-width:100%;background:var(--ref-accent);color:var(--ref-on-accent)!important;font-weight:600;font-size:.9rem;border-radius:5px;line-height:1.5;text-decoration:none;text-align:center}.ref-assurance{font-size:.83rem;color:var(--ref-muted);margin-top:16px!important;margin-bottom:0!important}.ref-index{align-self:start;border-top:3px solid var(--ref-teal);padding-top:21px;margin-top:6px}.ref-index ol{list-style:none;padding:0;margin:12px 0 0}.ref-index li{border-bottom:1px solid var(--ref-rule);margin:0}.ref-index a{display:block;padding:14px 0;font-size:.85rem;line-height:1.5;color:var(--ref-ink)}.ref-index .ref-label{color:var(--ref-teal);margin:0}.ref-section{display:grid;grid-template-columns:112px minmax(0,1fr);gap:28px;border-top:1px solid var(--ref-rule);padding-block:38px 40px;scroll-margin-top:30px}.ref-section>.ref-number{padding-top:8px}.ref-body{min-width:0;max-width:850px}.ref-body>p:last-child{margin-bottom:0}.ref-note{border-left:3px solid var(--ref-teal);padding:4px 0 4px 20px;margin-top:24px;color:var(--ref-muted);font-size:.9rem}.ref-note p{margin:0}.ref-facts{margin:0;border-top:1px solid var(--ref-rule)}.ref-facts>div{display:grid;grid-template-columns:minmax(100px,1fr) 2fr;gap:20px;border-bottom:1px solid var(--ref-rule);padding:15px 0}.ref-facts dt{font-weight:600;font-size:.92rem}.ref-facts dd{margin:0;font-size:.92rem}.answer-faq{border-top:1px solid var(--ref-rule);padding-top:18px;margin-top:20px}.answer-faq h3{margin:0 0 10px}.answer-faq p{margin-bottom:0}.ref-table-wrap{max-width:100%;overflow-x:auto;margin:22px 0}.ref-table{border-collapse:collapse;width:100%;min-width:640px;font-size:.88rem;line-height:1.6}.ref-table caption{text-align:left;margin-bottom:12px;color:var(--ref-muted)}.ref-table th,.ref-table td{border-bottom:1px solid var(--ref-rule);padding:16px 18px;vertical-align:top;text-align:left}.ref-table th{font-weight:600}.ref-table thead th{border-top:2px solid var(--ref-ink);background:var(--ref-panel)}.ref-table th:first-child,.ref-table td:first-child{padding-left:0}.ref-table p{margin:0}.ref-sources{font-size:.88rem;line-height:1.7}.ref-sources li{margin-bottom:15px}.ref-reviewed{font-size:.8rem;color:var(--ref-muted)}.ref-footer{border-top:1px solid var(--ref-rule);padding-block:30px 46px}.ref-footer nav{display:flex;gap:15px 25px;flex-wrap:wrap;font-size:.8rem;margin-top:20px}.ref-footer nav a{color:var(--ref-muted)}
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@media(max-width:360px){.ref-container{width:calc(100% - 32px)}.ref-page h1{font-size:2.6rem}.ref-section{grid-template-columns:1fr;gap:10px}.ref-index ol{grid-template-columns:1fr}}
@media print{.ref-header nav,.ref-index,.ref-cta,.ref-skip{display:none}.ref-container{width:auto}.ref-page{background:#fff;color:#1a1520;font-size:11pt}.ref-hero{display:block}.ref-section{break-inside:auto}.ref-facts>div,.answer-faq,tr{break-inside:avoid}h1,h2,h3{break-after:avoid}p{orphans:3;widows:3}.ref-table-wrap{overflow:visible}.ref-table{min-width:0}}

.ref-theme{font:inherit;min-height:44px;padding:8px 15px;border:0;border-radius:0;color:var(--ref-accent);background:transparent;cursor:pointer}
.ref-header nav{align-items:center}.ref-close{padding:35px 0 50px;border-top:1px solid var(--ref-rule)}.ref-links{font-size:.92rem}.ref-cta[aria-busy="true"]{opacity:.8}
.ref-cell-label{display:none}
@media(max-width:800px){
  .ref-table-wrap{overflow:visible}.ref-table{display:block;min-width:0}.ref-table caption{display:block}
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  .ref-table tr{border-top:2px solid var(--ref-ink);margin-top:20px}
  .ref-table tbody th{padding:14px 0;font-size:1.1rem}.ref-table td{padding:14px 0}
  .ref-cell-label{display:block;font-weight:600;margin-bottom:6px;color:var(--ref-muted)}
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/* Sol round one: an editorial reference, with a generous answer lead and compact directory. */
:root{--ref-paper:#fff;--ref-panel:#f6f1ea;--ref-rule:#e5e2e7;--ref-muted:#5e5569}
html[data-theme="dark"]{--ref-paper:#1a1520;--ref-panel:#251f2a;--ref-rule:#49414f;--ref-muted:#c2bdc6}
.ref-page{font-size:17px;line-height:1.75}
.ref-container{width:min(1136px,calc(100% - 96px))}
.ref-header{padding-block:24px;border-bottom:1px solid var(--ref-ink)}
.ref-brand{font-size:1.55rem}
.ref-header nav{gap:22px;font-size:.84rem}
.ref-header nav>a{color:var(--ref-ink)}
.ref-theme{border-radius:0;font-size:.8rem;padding:8px 0;text-decoration:underline;text-underline-offset:.2em}
.ref-hero{grid-template-columns:minmax(0,1fr) 272px;gap:76px;padding-block:64px 64px}
.ref-label{font-size:.68rem;letter-spacing:.055em;line-height:1.8}
.ref-hero .ref-label{margin-bottom:25px;max-width:100%;color:var(--ref-teal)}
.ref-page h1{font-size:clamp(3rem,5vw,4.5rem);line-height:1.025;letter-spacing:-.04em;max-width:18ch}
.ref-answer{font-size:1.15rem;line-height:1.7;margin-top:28px!important;max-width:58ch}
.ref-hero [data-answer-copy="intro"]{font-size:.94rem;color:var(--ref-muted);max-width:58ch;margin-bottom:24px}
.ref-cta{border-radius:0;min-height:50px;padding:13px 22px;font-size:.91rem;box-shadow:inset 0 -2px 0 rgba(0,0,0,.1)}
.ref-cta:hover{filter:brightness(.94)}
.ref-index{margin-top:0;padding:23px 0 0;border-top:2px solid var(--ref-teal)}
.ref-index .ref-label{margin-bottom:12px;font-size:.72rem}
.ref-index ol{margin:0;counter-reset:directory}
.ref-index li{counter-increment:directory}
.ref-index a{display:grid;grid-template-columns:22px minmax(0,1fr);gap:10px;padding:16px 0;font-size:.84rem;line-height:1.55;text-decoration:none}
.ref-index a::before{content:counter(directory,decimal-leading-zero);font-family:"WT Mono";font-size:.65rem;color:var(--ref-teal);padding-top:3px}
.ref-index a:hover{color:var(--ref-accent);text-decoration:underline}
.ref-section{grid-template-columns:120px minmax(0,1fr);gap:34px;padding-block:46px 48px}
.ref-section>.ref-number{font-size:.83rem;color:var(--ref-teal);padding-top:9px;letter-spacing:.04em}
.ref-body{max-width:880px}
.ref-page h2{font-size:clamp(2rem,3.2vw,2.65rem);line-height:1.14;letter-spacing:-.03em;margin-bottom:23px;max-width:31ch}
.ref-page h3{font-size:1.02rem;line-height:1.5}
.ref-body>p{max-width:70ch}
.ref-links{list-style:none;padding:0!important;margin:25px 0 0;font-size:.91rem}
.ref-links li{margin:0;padding:8px 0}
.ref-links a{text-decoration-thickness:1px}
.ref-note{background:var(--ref-panel);padding:18px 22px;border-left:2px solid var(--ref-teal);margin-top:28px}
.answer-faq{padding-top:24px;margin-top:26px}
.answer-faq h3{margin:0 0 10px}
.answer-faq p{max-width:70ch}
.ref-facts>div{padding:19px 0;grid-template-columns:minmax(120px,1fr) 2fr;gap:32px}
.ref-table-wrap{margin:28px 0}
.ref-table{font-size:.87rem;line-height:1.65;table-layout:fixed}
.ref-table th,.ref-table td{padding:20px 17px}
.ref-table thead th{background:var(--ref-panel);border-top:2px solid var(--ref-teal);font-size:.88rem}
.ref-table th:first-child,.ref-table td:first-child{padding-left:15px;width:20%}
.ref-table tbody th{font-weight:600}
.ref-table tbody tr:nth-child(even){background:var(--ref-panel)}
.ref-sources{padding-left:1.15em;font-size:.88rem}
.ref-sources li{padding-left:8px;margin-bottom:13px}
.ref-close{border-top:2px solid var(--ref-teal);padding:44px 0 54px 154px}
.ref-close h2{max-width:26ch;margin-bottom:24px}
.ref-footer{padding-block:32px 42px}
.ref-footer nav{gap:14px 24px;line-height:1.6}
@media(max-width:1000px) and (min-width:801px){
 .ref-container{width:calc(100% - 64px)}
 .ref-hero{gap:40px;grid-template-columns:minmax(0,1fr) 240px}
 .ref-page h1{font-size:3.35rem}
 .ref-section{grid-template-columns:70px minmax(0,1fr);gap:26px}
 .ref-close{padding-left:96px}
}
@media(max-width:800px){
 .ref-container{width:calc(100% - 44px)}
 .ref-header{padding-block:18px;gap:14px}
 .ref-brand{font-size:1.4rem}
 .ref-header nav{font-size:.74rem;gap:12px}
 .ref-header nav>a{max-width:14ch;line-height:1.45}
 .ref-theme{font-size:.73rem;padding-inline:10px}
 .ref-hero{display:block;padding-block:36px 36px}
 .ref-hero .ref-label{font-size:.62rem;letter-spacing:.035em;margin-bottom:20px}
 .ref-page h1{font-size:clamp(2.6rem,7.7vw,3.9rem);line-height:1.04;max-width:19ch;letter-spacing:-.035em}
 .ref-answer{font-size:1.05rem;line-height:1.72;margin-top:22px!important}
 .ref-hero [data-answer-copy="intro"]{font-size:.92rem;margin-bottom:22px}
 .ref-index{margin-top:35px;padding-top:18px}
 .ref-index .ref-label{font-size:.68rem;margin-bottom:8px}
 .ref-index ol{display:block}
 .ref-index a{grid-template-columns:20px minmax(0,1fr);gap:10px;font-size:.85rem;padding:12px 0}
 .ref-section{display:block;padding-block:30px 34px}
 .ref-section>.ref-number{display:block;padding-top:0;margin-bottom:12px;font-size:.72rem}
 .ref-page h2{font-size:2.08rem;line-height:1.15;max-width:30ch;margin-bottom:20px}
 .ref-page{font-size:16px}
 .ref-body>p{max-width:100%}
 .ref-links{margin-top:19px;font-size:.87rem}
 .ref-links li{padding:7px 0}
 .ref-facts>div{grid-template-columns:1fr;gap:6px;padding:17px 0}
 .answer-faq{padding-top:22px;margin-top:23px}
 .ref-table{table-layout:auto}
 .ref-table-wrap{overflow:visible}
 .ref-table tbody tr{border-top:2px solid var(--ref-teal);padding:0 18px;background:var(--ref-panel)!important;margin-top:22px}
 .ref-table th:first-child,.ref-table td:first-child{width:100%;padding-left:0}
 .ref-table tbody th{padding:17px 0;font-family:"WT Serif Display";font-size:1.65rem;line-height:1.25;font-weight:400}
 .ref-table td{padding:16px 0}
 .ref-table td:last-child{border-bottom:0}
 .ref-cell-label{font-family:"WT Mono";font-size:.69rem;line-height:1.6;letter-spacing:.025em;color:var(--ref-teal);margin-bottom:8px;font-weight:500}
 .ref-note{padding:16px 18px}
 .ref-close{padding:32px 0 40px}
 .ref-footer{padding-block:26px 36px}
 .ref-footer nav{font-size:.77rem;gap:13px 20px}
}
@media(max-width:360px){.ref-container{width:calc(100% - 32px)}.ref-page h1{font-size:2.45rem}.ref-header{align-items:flex-start}.ref-header nav{flex:1;justify-content:flex-end}.ref-table tbody tr{padding-inline:14px}}
@media print{.ref-page{background:#fff;color:#1a1520}.ref-container{width:auto}.ref-hero{display:block;padding-block:25px}.ref-section{padding-block:24px;grid-template-columns:40px minmax(0,1fr);gap:20px}.ref-close{padding-left:60px}.ref-table{table-layout:auto}.ref-theme{display:none}}

/* Round 2 research:
 * W3C WAI Understanding Reflow: https://www.w3.org/WAI/WCAG21/Understanding/reflow
 * GOV.UK Layout: https://design-system.service.gov.uk/styles/layout/
 * GOV.UK Table: https://design-system.service.gov.uk/components/table/
 * Applications: single-column header and prose; controlled reading measure;
 * intact row/column relationships and stronger repeated mobile field labels.
 */
:root{--ref-paper:#f6f1ea;--ref-panel:#fff;--ref-rule:#d4ced2}
html[data-theme="dark"]{--ref-paper:#1a1520;--ref-panel:#332c3e;--ref-rule:#5e5569}
.ref-hero{grid-template-columns:minmax(0,1fr) 320px;gap:56px}
.ref-hero .ref-label{font-size:.75rem;letter-spacing:.035em}
.ref-index a{font-size:.85rem;line-height:1.6;padding-block:15px}
.ref-index .ref-label{font-size:.72rem}
.ref-body>p{max-width:68ch}
.ref-links,.ref-sources{list-style:disc;padding-left:1.15em!important;margin:22px 0 0;font-size:.91rem;line-height:1.7}
.ref-links li,.ref-sources li{padding:4px 0 4px 7px;margin:0 0 6px}
.ref-links li::marker,.ref-sources li::marker{color:var(--ref-teal);font-size:.75em}
.ref-links a,.ref-sources a{text-decoration-thickness:1px;text-underline-offset:.22em}
.ref-table{table-layout:auto;font-size:.9rem}
.ref-table th:first-child,.ref-table td:first-child{min-width:180px;width:23%;overflow-wrap:normal;word-break:normal;hyphens:none}
.ref-table tbody th{font-weight:700}
.ref-table thead th{background:var(--ref-panel);border-top:2px solid var(--ref-teal);border-bottom:1px solid var(--ref-teal)}
.ref-close{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px 32px;padding-block:40px 48px}
.ref-close h2{max-width:26ch;margin:0;flex:1 1 440px}
.ref-close .ref-cta{flex:0 1 auto}
@media(min-width:801px) and (max-width:1000px){.ref-hero{grid-template-columns:minmax(0,1fr) 280px;gap:32px}.ref-close h2{flex-basis:340px}}
@media(max-width:800px){
 .ref-header{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:4px 16px;padding-block:12px 16px}
 .ref-header>.ref-brand{grid-column:1;grid-row:1;display:block;width:auto;min-width:0;margin:0}
 .ref-header nav{grid-column:1/-1;grid-row:2;display:block;width:100%;font-size:.82rem}
 .ref-header nav>a{display:block;max-width:none;width:100%;line-height:1.5;padding-block:4px}
 .ref-theme{grid-column:2;grid-row:1;justify-self:end;display:block;width:auto;text-align:right;font-size:.8rem;min-height:44px;padding:6px 0;background:transparent}
 .ref-theme[hidden]{display:none}
 .ref-hero{display:block;padding-top:30px}
 .ref-hero .ref-label{font-size:.75rem;letter-spacing:.025em;line-height:1.7;margin-bottom:20px}
 .ref-index .ref-label{font-size:.72rem}
 .ref-section>.ref-number{font-size:.75rem;line-height:1.4;margin-bottom:4px;padding:0}
 .ref-page h2{margin-top:0}
 .ref-links,.ref-sources{font-size:.89rem;margin-top:18px}
 .ref-table{font-size:.94rem;line-height:1.65}
 .ref-table tbody tr{padding-inline:16px;margin-top:18px;border-top:2px solid var(--ref-teal)}
 .ref-table th:first-child,.ref-table td:first-child{min-width:0;width:100%;overflow-wrap:normal}
 .ref-table tbody th{font-weight:400;font-size:1.65rem;padding-block:15px}
 .ref-table td{padding-block:14px}
 .ref-cell-label{display:block;color:var(--ref-teal);font-size:.76rem;font-weight:600;line-height:1.5;letter-spacing:0;text-transform:none;border-left:2px solid var(--ref-teal);padding-left:9px;margin-bottom:9px}
 .ref-close{display:flex;flex-direction:column;align-items:flex-start;gap:22px;padding:30px 0 38px}
 .ref-close h2{flex:0 1 auto;max-width:26ch}
 .ref-close .ref-cta{flex:none;max-width:100%}
}
@media print{.ref-page{background:#fff}.ref-header nav,.ref-theme{display:none}.ref-close{display:block}.ref-close h2{margin-bottom:16px}.ref-table th:first-child,.ref-table td:first-child{min-width:0}}