@font-face{font-family:Source Sans;src:url('/fonts/source-sans-3.woff2') format('woff2');font-weight:200 900;font-display:swap}@font-face{font-family:Source Serif;src:url('/fonts/source-serif-4.woff2') format('woff2');font-weight:200 900;font-display:swap}
:root{--paper:#ffffff;--white:#fff;--ink:#18263a;--muted:#47566b;--accent:#174a8b;--line:#dce5f1;--soft:#eff4fc;--sans:'Source Sans',Arial,sans-serif;--serif:'Source Serif',Georgia,serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.65 var(--serif)}a{color:var(--accent);text-underline-offset:.2em;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}button,summary{font:inherit}button{cursor:pointer}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:5px}img{display:block;max-width:100%;height:auto}p{margin:0 0 1.2em}h1,h2,h3{font-family:var(--sans);font-weight:700;line-height:1.14;margin:0 0 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a:hover{color:var(--accent);text-decoration:underline}.contents .rail-note{padding-top:17px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);margin-top:24px}.article-figure{margin:0 0 46px}.article-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}.article-figure figcaption{font:13px/1.5 var(--sans);color:var(--muted);border-bottom:1px solid var(--line);padding:12px 0}.prose-section{margin:0 0 46px}.prose-section p{font-size:18px;line-height:1.7}.prose-section ul,.prose-section ol{padding-left:24px;margin:20px 0}.prose-section li{padding:4px 0}.table-scroll{overflow-x:auto;margin:24px 0 6px;border-block:1px solid var(--line);max-width:100%;overscroll-behavior-inline:contain}table{border-collapse:collapse;width:100%;font:15px/1.5 var(--sans);min-width:560px;text-align:left}th,td{padding:16px 17px;border-bottom:1px solid var(--line);vertical-align:top}th{font-weight:600;background:var(--soft);color:var(--ink)}tr:last-child 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@media(max-width:1100px){.wrap{width:calc(100% - 48px)}.site-nav{gap:20px}.header-inner{gap:25px}.article-layout{gap:35px;grid-template-columns:minmax(0,1fr) 220px}.hero{gap:35px}.footer-grid{gap:20px}.wordmark{font-size:22px}}
@media(max-width:979px){.article-layout{display:flex;flex-direction:column;gap:0}.contents{position:static;width:100%;order:-1;margin-bottom:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0}.contents .rail-note{display:none}.story{width:100%;max-width:780px}.article-head{max-width:850px}.hero{grid-template-columns:minmax(0,1.4fr) minmax(240px,1fr);gap:30px}.hero h1{font-size:55px}.case-index li{padding:17px 14px}.case-index a{font-size:18px}.site-nav{gap:17px}.wordmark small{font-size:10px}.wordmark{font-size:20px}.wordmark svg{width:40px;height:40px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:759px){.wrap{width:calc(100% - 36px)}.utility{font-size:10px;padding:8px 0}.utility .wrap{gap:8px}.utility .desktop-only{display:none}.header-inner{grid-template-areas:'brand toggle' 'nav nav';grid-template-columns:minmax(0,1fr) auto;gap:0;min-height:84px;padding-block:17px}.wordmark{font-size:21px}.wordmark small{font-size:10px}.menu-toggle{grid-area:toggle;display:block;border:1px solid var(--line);background:white;padding:9px 12px;color:var(--ink);font:600 14px/1.3 var(--sans)}.menu-toggle:after{content:' +';color:var(--accent)}.menu-toggle[aria-expanded=true]:after{content:' −'}.site-nav{display:none;justify-content:start;margin-top:22px;border-top:1px solid var(--line);padding-top:15px;gap:18px}.menu-open .site-nav{display:grid;grid-template-columns:1fr;grid-area:nav}.site-nav ul{position:static;box-shadow:none;border:0;border-left:1px solid var(--line);padding:8px 0 0 18px;width:auto}.site-nav>details{width:100%}.site-nav summary{padding:4px 0}.site-nav li{padding:5px 0}.crumbs{font-size:12px;margin:23px 0 27px}.hero{display:block;padding:0 0 28px}.hero h1{font-size:46px;margin-bottom:22px}.hero .lead{font-size:20px}.timeline{margin-top:30px;padding-top:17px}.timeline ol{display:grid;grid-template-columns:1fr 1fr;gap:20px 15px}.timeline li{padding:0 0 0 35px}.timeline li:after{display:none}.timeline a{font-size:18px}.timeline p{font-size:12px}.case-index{grid-template-columns:1fr 1fr;margin-bottom:30px}.case-index li{padding:17px 14px!important}.case-index li:nth-child(3){border-left:0}.case-index li:nth-child(n+3){border-top:1px solid var(--line)}.case-index span{font-size:10px;margin-bottom:6px}.case-index a{font-size:18px}.section-index{font-size:14px;gap:12px 20px;padding-bottom:25px}.article-head{padding:0 0 25px}.article-head h1{font-size:38px;line-height:1.08}.lead{font-size:20px}.meta{font-size:12px;margin-top:17px}.article-figure{margin-bottom:35px}.prose-section{margin-bottom:35px}.prose-section h2{font-size:29px}.prose-section p{font-size:17px;line-height:1.7}.table-scroll{margin-top:20px}th,td{padding:13px 15px}table{font-size:14px}.notebook a{grid-template-columns:minmax(0,1fr) 85px;gap:16px}.notebook strong{font-size:20px}.notebook p{font-size:14px}.sources ol{font-size:13px}.faq summary{font-size:18px}.site-footer{margin-top:35px;padding-top:30px}.footer-grid{gap:28px 20px}.footer-grid>section:first-child{grid-column:1/-1}.footer-note{display:block;margin-top:25px}.footer-note p+p{margin-top:13px}.plain-page{max-width:100%}.not-found{padding:55px 0 80px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.utility .wrap{margin-block:0}.article-layout{max-width:1115px;margin-inline:auto}
figure[data-provider-cover] img{max-width:325px;width:100%}figure[data-provider-cover]{background:var(--white);padding:20px}
html:has(.slot-library){scroll-behavior:auto;overflow-anchor:none}
.popup-open{overflow:hidden}.reading-popup{width:min(560px,calc(100% - 32px));max-width:none;max-height:88dvh;padding:0;border:1px solid var(--line);background:var(--white);color:var(--ink);box-shadow:0 18px 65px #18263a30;overscroll-behavior:contain}.reading-popup::backdrop{background:#18263a8a}.reading-popup>article>header{display:grid;grid-template-columns:34px minmax(0,1fr) 44px;align-items:center;gap:12px;padding:15px 22px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1;background:white}.reading-popup header svg{width:34px;height:34px}.reading-popup header p{margin:0;font:700 17px/1.2 var(--sans)}.reading-popup header small{display:block;margin-top:5px;font:12px/1.3 var(--sans);color:var(--muted)}.reading-popup button[data-popup-close]{width:44px;height:44px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:28px var(--sans);cursor:pointer}.popup-view[hidden]{display:none!important}.popup-view figure{margin:0;background:var(--paper)}.popup-view img{width:100%;max-height:190px;object-fit:cover}.popup-copy{padding:24px}.popup-copy .popup-step{font:600 12px/1.4 var(--sans);text-transform:uppercase;letter-spacing:.09em;color:var(--accent);margin:0 0 12px}.popup-copy h2{font-size:28px;line-height:1.14;margin-bottom:15px}.popup-copy>p:not(.popup-step){font-size:17px;line-height:1.55;margin-bottom:18px}.popup-copy ul{display:flex;gap:8px;flex-wrap:wrap;list-style:none;padding:0;margin:18px 0;font:13px/1.4 var(--sans)}.popup-copy li{border:1px solid var(--line);padding:5px 9px;background:var(--soft)}.popup-link{display:block;text-align:center;background:var(--accent);color:#fff;padding:13px 18px;text-decoration:none;font:600 17px/1.4 var(--sans);min-height:48px}.popup-copy nav{display:grid;gap:0;border-top:1px solid var(--line)}.popup-copy nav a{padding:12px 0;min-height:44px;border-bottom:1px solid var(--line);font:600 16px/1.4 var(--sans)}.reading-popup:has([data-popup-view="1"]:not([hidden])){width:min(760px,calc(100% - 32px))}.popup-view[data-popup-view="1"]{display:grid;grid-template-columns:minmax(0,38%) minmax(0,1fr)}.popup-view[data-popup-view="1"] img{height:100%;max-height:none;object-fit:cover}.reading-popup:has([data-popup-view="2"]:not([hidden])){width:min(480px,calc(100% - 32px))}.popup-view[data-popup-view="2"] figure{padding:20px 24px 0}.popup-view[data-popup-view="2"] img{width:104px;height:66px;object-fit:cover}.popup-view[data-popup-view="2"] .popup-copy{padding-top:16px}.popup-view[data-popup-view="2"] h2{font-size:26px}@media(max-width:599px){.reading-popup>article>header{padding:12px 16px;gap:10px}.reading-popup header p{font-size:15px}.popup-copy{padding:20px}.popup-copy h2{font-size:25px}.popup-copy>p:not(.popup-step){font-size:16px}.popup-view img{max-height:150px}.popup-view[data-popup-view="1"]{grid-template-columns:1fr}.popup-view[data-popup-view="1"] img{height:150px}.popup-view[data-popup-view="2"] figure{padding-left:20px}}
.demo-block{border:1px solid var(--line);background:var(--white);padding:22px;margin:30px 0 48px}.demo-block h2{font-size:28px}.demo-block .article-figure{margin:0 0 20px}.demo-block>p{font-size:16px}.demo-load{padding:13px 20px;background:var(--accent);border:1px solid var(--accent);color:#fff;font:600 17px var(--sans);min-height:48px}.demo-stage:empty{display:none}.demo-stage iframe{width:100%;aspect-ratio:16/10;min-height:340px;border:0;display:block;margin-top:20px;background:var(--soft)}.library-reading{max-width:760px;margin:65px auto}.slot-library{margin:0 0 50px}.filter-target{margin:0;height:0;overflow:hidden}.slot-filters{display:grid;grid-template-columns:1fr;gap:18px;margin-bottom:30px;border-block:1px solid var(--line);padding:22px 0;font-family:var(--sans)}.slot-filters>section{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.slot-filters h3{font-size:15px;margin:0 15px 0 0;min-width:85px}.slot-filters a{display:inline-flex;align-items:center;min-height:44px;padding:6px 13px;background:white;border:1px solid var(--line);font-size:15px;text-decoration:none;width:fit-content}.slot-filters a:hover{background:var(--soft)}.slot-cards{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:0 28px}.slot-cards>li{border-bottom:1px solid var(--line);padding:25px 0;min-width:0}.slot-cards>li>a{display:grid;grid-template-columns:42% minmax(0,1fr);gap:20px;color:var(--ink);text-decoration:none;align-items:start}.slot-cards h3{font-size:25px;line-height:1.12;margin:0 0 10px}.slot-cards a:hover h3{text-decoration:underline;text-underline-offset:4px}.slot-cards p{font:15px/1.5 var(--sans);margin:0 0 10px;color:var(--muted)}.slot-cards img{aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line)}
@media(max-width:979px){.slot-cards{grid-template-columns:1fr}.slot-cards>li>a{grid-template-columns:210px minmax(0,1fr)}}@media(max-width:559px){.slot-cards>li>a{grid-template-columns:1fr;gap:16px}.slot-cards h3{font-size:28px}.slot-cards p{font-size:16px}.slot-filters h3{width:100%;margin:0}.demo-block{padding:16px}.demo-stage iframe{min-height:280px}}

/* Centred casino refresh */
body{background:linear-gradient(180deg,#eef3ff 0,#fff 760px);background-repeat:no-repeat;background-color:var(--paper)}
.header-inner{grid-template-areas:'brand nav play';grid-template-columns:auto minmax(0,1fr) auto;gap:28px;min-height:96px}
.wordmark{font-size:23px;gap:12px}.site-mark{width:52px;height:52px;object-fit:contain;flex:none}
.nav-play{grid-area:play;display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:46px;min-width:92px;padding:11px 19px;border-radius:8px;background:var(--accent);color:#fff;font:700 17px/1.3 var(--sans);text-decoration:none;white-space:nowrap}.nav-play:hover{background:#123b70}.nav-play span{font-size:20px}
.site-nav{gap:24px}.site-nav>details>summary{min-height:44px;display:flex;align-items:center;gap:8px}.site-nav ul{top:42px;border-radius:10px;box-shadow:0 12px 30px #18263a12}
.hero,.article-head{display:block;max-width:780px;margin-inline:auto;text-align:center;padding-top:16px}.hero h1,.article-head h1{margin-inline:auto}.hero .lead,.article-head .lead{max-width:760px;margin-inline:auto}.meta{justify-content:center}
.hero .timeline{text-align:left;margin-top:32px}.timeline ol{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.timeline li{padding-left:0;padding-top:34px}.timeline li:before{top:0;left:0}.timeline li:after{display:none}.timeline a{font-size:18px}.timeline p{font-size:13px}
.article-layout,.plain-page .article-layout{display:flex;flex-direction:column;gap:0;max-width:780px;margin-inline:auto}.story{width:100%;max-width:780px;margin-inline:auto}
.contents,.plain-page .contents{position:static;order:-1;width:100%;margin:0 auto 32px;border:1px solid var(--line);border-radius:12px;padding:16px 20px;background:#ffffffd9}.contents summary{color:var(--accent)}.contents .rail-note{display:none}.contents ol{columns:2;column-gap:32px}.contents li{break-inside:avoid;padding:5px 0}
.case-index,.section-index{max-width:1100px;margin-inline:auto}.section-index{justify-content:center}.article-figure img{border-radius:12px}.article-figure[data-art=casino] img{aspect-ratio:16/9}.demo-block{border-radius:12px}.library-reading{max-width:780px}
.slot-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.slot-cards>li{padding:0;border:1px solid var(--line);border-radius:14px;background:white;overflow:hidden}.slot-cards>li>a{display:block;height:100%}.slot-cards img{width:100%;border:0;border-radius:0;aspect-ratio:16/9;object-fit:cover}.slot-cards>li>a>section{padding:20px}.slot-cards h3{font-size:25px}.slot-cards p{font-size:15px}.slot-cards>li:has(a:hover){border-color:var(--accent);box-shadow:0 8px 22px #18263a0a}
.reading-popup{border-radius:14px}.reading-popup .site-mark{width:34px;height:34px}.popup-link{border-radius:8px}.not-found{margin-inline:auto;text-align:center}
@media(max-width:1099px){.slot-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.site-nav{gap:18px}.header-inner{gap:20px}.wordmark{font-size:21px}}
@media(max-width:979px){.hero h1{font-size:52px}.timeline ol{grid-template-columns:repeat(4,minmax(0,1fr))}.contents ol{columns:2}}
@media(max-width:759px){.header-inner{grid-template-areas:'brand play toggle' 'nav nav nav';grid-template-columns:minmax(0,1fr) auto auto;gap:0 10px;min-height:88px;padding-block:16px}.site-mark{width:42px;height:42px}.wordmark{font-size:19px;gap:9px;letter-spacing:-.025em}.wordmark small{font-size:9px}.nav-play{min-width:66px;min-height:44px;padding:10px 12px;font-size:16px;gap:6px}.nav-play span{display:none}.menu-toggle{font-size:14px;padding:10px;border-radius:8px;min-height:44px}.site-nav{margin-top:18px;gap:14px}.site-nav ul{border-radius:0;box-shadow:none}.hero h1{font-size:42px}.hero,.article-head{padding-top:4px}.hero .timeline{text-align:left;margin-top:24px}.timeline ol{grid-template-columns:1fr 1fr;gap:24px}.timeline li{padding:30px 0 0!important}.contents ol{columns:1}.contents{padding:14px 17px}.slot-cards{grid-template-columns:1fr;gap:22px}.slot-cards>li>a>section{padding:20px}.slot-cards h3{font-size:27px}}
@media(max-width:359px){.header-inner{column-gap:7px}.wordmark{font-size:17px;gap:7px}.wordmark small{font-size:8px}.site-mark{width:36px;height:36px}.nav-play{min-width:58px;padding-inline:10px}.menu-toggle{padding-inline:9px}.hero h1{font-size:36px}.article-head h1{font-size:34px}}
.library-controls{margin:0 0 26px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:16px 20px;font-family:var(--sans)}.library-controls>summary{cursor:pointer;font-size:18px;font-weight:600;color:var(--accent);min-height:28px}.library-controls>summary span{font-size:14px;font-weight:400;color:var(--muted);margin-left:20px}.library-controls .slot-filters{border:0;margin:16px 0 0;padding:16px 0 0;border-top:1px solid var(--line)}main:has(.slot-library) .article-head h1{font-size:52px}main:has(.slot-library) .article-head{padding-bottom:20px}@media(max-width:759px){.library-controls{padding:14px 17px}.library-controls>summary span{display:block;margin:5px 0 0 20px;font-size:12px}main:has(.slot-library) .article-head h1{font-size:38px}}
/* Main section links have independent disclosure controls. */
.nav-group{display:flex;align-items:center;gap:2px;position:relative}.nav-group>a{display:flex;align-items:center;min-height:44px;text-decoration:none;color:var(--ink)}.nav-group>a:hover{color:var(--accent);text-decoration:underline}.nav-group>details{position:static}.nav-group summary{width:36px;min-height:44px;display:grid;place-items:center;cursor:pointer;list-style:none}.nav-group summary::-webkit-details-marker{display:none}.nav-group summary:after{content:none!important}.nav-group summary span:before{content:'+';font-size:19px;color:var(--accent)}.nav-group details[open] summary span:before{content:'−'}.site-nav .nav-group ul{top:100%;right:0}.site-nav{gap:20px}.showcase-placeholder{display:grid;grid-template-areas:'logo copy action';grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:20px;margin:20px 0 28px;padding:22px;border:1px dashed #a8bedc;border-radius:12px;background:#fff;min-height:126px;text-align:left}.showcase-empty-logo{grid-area:logo;width:64px;height:64px;background:#eff4fc;border:1px solid var(--line);border-radius:9px;margin:0}.showcase-copy{grid-area:copy;min-width:0}.showcase-copy p{font:600 18px/1.3 var(--sans);margin:0}.showcase-copy p+p{font-weight:400;font-size:15px;color:var(--muted);margin-top:7px}.showcase-action{grid-area:action;min-height:44px;padding:12px 18px;border:1px solid var(--line);border-radius:8px;font:600 15px/1.3 var(--sans);text-align:center;text-decoration:none}.showcase-action[disabled]{background:#eff4fc;color:#47566b;cursor:default}.showcase-action[href]{background:var(--accent);color:white}.showcase-action[href]:hover{background:#123b70}
@media(max-width:979px){.header-inner{grid-template-areas:'brand play toggle' 'nav nav nav';grid-template-columns:minmax(0,1fr) auto auto;gap:0 10px;min-height:88px;padding-block:16px}.menu-toggle{grid-area:toggle;display:block;min-height:44px;padding:10px;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink);font:600 14px/1.3 var(--sans)}.site-nav{display:none;justify-content:start;margin-top:18px;border-top:1px solid var(--line);padding-top:15px;gap:14px}.menu-open .site-nav{display:grid;grid-template-columns:1fr;grid-area:nav}.nav-group{display:grid;grid-template-columns:minmax(0,1fr) 44px;gap:0;width:100%;align-items:start}.nav-group>a{grid-column:1;grid-row:1}.nav-group>details{display:contents}.nav-group summary{grid-column:2;grid-row:1;width:44px}.site-nav .nav-group ul{grid-column:1/-1;grid-row:2;position:static;box-shadow:none;border:0;border-left:1px solid var(--line);padding:8px 0 0 18px;width:auto;margin:0}.nav-group details:not([open])>ul{display:none}}
@media(max-width:599px){.showcase-placeholder{grid-template-areas:'logo copy' 'action action';grid-template-columns:52px minmax(0,1fr);padding:18px;gap:16px}.showcase-empty-logo{width:52px;height:52px}.showcase-action{width:100%}.showcase-copy p{font-size:17px}}