/* Native full-screen slide chapters; interactive content stays in the document. */
html.alt-slide{scroll-snap-type:y mandatory;scroll-behavior:smooth;scrollbar-width:none}html.alt-slide::-webkit-scrollbar{display:none}
.alt-slide [data-screen-label]{overflow:clip!important;width:calc(100% - 42px)!important;max-width:1600px!important;margin-inline:auto!important}
.alt-slide [data-scroll-chapter]{height:100dvh;min-height:100dvh;box-sizing:border-box;overflow-x:clip;overflow-y:auto;scroll-snap-align:start;scroll-snap-stop:always;scroll-margin:0;overscroll-behavior-y:auto;scrollbar-width:thin;scrollbar-color:#8191a64d transparent}
.alt-slide #overview{display:flex;flex-direction:column}.alt-slide [data-hero]{flex:1;padding-top:40px!important;padding-bottom:32px!important}.alt-slide #overview>[data-pad]:last-child{padding-bottom:28px!important}
.alt-slide #exposure,.alt-slide #performance{padding-top:32px!important;padding-bottom:32px!important}
.alt-slide #exposure>.slide-content>div:nth-child(2){margin-top:24px!important;padding:18px!important}
.alt-slide #performance>.slide-content>div:nth-child(3){margin-top:24px!important}
.alt-slide [data-method]{padding:0!important;overflow:visible!important}.alt-slide [data-method]>div{max-width:none!important}
.alt-slide .method-screen{padding:40px 64px;display:flex;flex-direction:column;justify-content:safe center;background:#f7f7f8}
.alt-slide .method-screen>div{width:100%;max-width:1150px!important;margin-inline:auto!important}
.alt-slide .method-screen>[data-grid2]{padding-top:22px!important;padding-bottom:22px!important}
.alt-slide .method-screen:first-child>[data-reveal]:first-child{max-width:1150px!important}
.alt-slide .method-screen:first-child h2{font-size:32px!important;max-width:760px}.alt-slide .method-screen:first-child>[data-reveal]:first-child>p{font-size:14px!important;line-height:22px!important;max-width:820px!important}
.alt-slide .method-screen>[data-grid2]>div:last-child>p{font-size:17px!important;line-height:27px!important}
.alt-slide .closing-screen{display:flex;flex-direction:column;background:#1f2432}
.alt-slide .closing-screen>div:first-child{flex:1;flex-shrink:0;display:flex;align-items:center;padding-top:36px!important;padding-bottom:36px!important}
.alt-slide .closing-screen>footer{padding-top:22px!important;padding-bottom:22px!important}
.alt-slide .closing-screen>*{flex-shrink:0}
.site-section-nav{--rail-ink:#b9c5d6;position:fixed;z-index:1000;left:7px;top:50%;transform:translateY(-50%);display:grid;gap:1px;padding:10px 0 10px 3px;border-left:1px solid #8996a32e;font-family:'Instrument Sans',system-ui,sans-serif}
.site-section-nav button{position:relative;border:0;padding:0;background:none;cursor:pointer;width:28px;height:30px;display:grid;place-items:center;color:var(--rail-ink)}
.site-section-nav button:before{content:'';height:3px;width:8px;background:currentColor;opacity:.42;transition:width .22s,opacity .22s}
.site-section-nav button[aria-current=true]:before{width:18px;opacity:1}
.site-section-nav .tick{height:2px;width:4px;background:var(--rail-ink);opacity:.18;justify-self:center;margin:2px 0}
.site-section-nav .label{position:absolute;left:37px;white-space:nowrap;padding:8px 12px;border:1px solid #ffffff21;border-radius:5px;background:#273243f5;color:#eff3f8;font-size:11px;opacity:0;pointer-events:none;transform:translateX(-5px);transition:opacity .15s,transform .15s}
.site-section-nav button:hover .label,.site-section-nav button:focus-visible .label{opacity:1;transform:none}
.site-section-nav button:focus-visible{outline:2px solid #9bb9d3;outline-offset:1px;border-radius:4px}
@media(min-width:1081px) and (max-height:820px){.alt-slide #exposure>.slide-content>div:first-child p,.alt-slide #performance>.slide-content>div:nth-child(2) p{font-size:14px!important;line-height:21px!important}.alt-slide #exposure h2,.alt-slide #performance h2{font-size:34px!important}.alt-slide #exposure>.slide-content>div:nth-child(2)>div:nth-child(2){zoom:.85}.alt-slide #performance [data-flow]{padding-top:20px!important;padding-bottom:20px!important}.alt-slide #performance>.slide-content>div:nth-child(3)>div:last-child{margin-top:18px!important}}
@media(max-width:1080px){.alt-slide .method-screen{padding:36px 24px}.alt-slide #overview [data-hero]{flex:0}.alt-slide [data-grid2]{gap:24px!important}}
@media(max-width:620px){.alt-slide [data-screen-label]{width:calc(100% - 30px)!important;margin-left:30px!important}.site-section-nav{left:1px;padding-left:1px}.site-section-nav button{width:23px;height:28px}.site-section-nav .tick{margin:1px 0}.site-section-nav .label{left:30px}.alt-slide [data-hero]{padding-top:32px!important}.alt-slide .method-screen{padding:32px 20px;justify-content:flex-start}.alt-slide .method-screen:first-child h2{font-size:28px!important}.alt-slide .closing-screen>div:first-child{display:block}.alt-slide .closing-screen>footer{gap:20px!important}}
@media(prefers-reduced-motion:reduce){html.alt-slide{scroll-behavior:auto}.site-section-nav *{transition:none!important}}

.alt-slide .slide-content{position:relative}.alt-slide #performance>.slide-content{position:static}

.alt-slide [data-method]{border-top:0!important}

/* Language and evidence share one balanced chapter. */
.alt-slide .method-combined .method-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;align-items:stretch}
.alt-slide .method-combined .method-pair>[data-grid2]{display:flex!important;flex-direction:column;gap:24px!important;padding:24px 0!important;min-width:0}
.alt-slide .method-combined .method-pair>[data-grid2]>div:last-child{display:flex;flex-direction:column;flex:1}
.alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>p{font-size:16px!important;line-height:25px!important;min-height:125px}
.alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>div:first-of-type{margin-top:24px!important;min-height:196px;box-sizing:border-box}
.alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>div:last-child{margin-top:20px!important}
@media(max-width:800px){.alt-slide .method-combined .method-pair{grid-template-columns:1fr;gap:20px}.alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>p{min-height:0}.alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>div:first-of-type{min-height:0}.alt-slide .method-combined{justify-content:flex-start}}

/* Mobile alignment: consistent gutters and stable, internally scrollable screens. */
@media(max-width:800px){
 .alt-slide [data-screen-label]{width:calc(100% - 24px)!important;margin:0 0 0 24px!important}
 .alt-slide [data-scroll-chapter]{height:100svh;min-height:100svh;overflow-y:auto!important;-webkit-overflow-scrolling:touch}
 .alt-slide [data-pad],.alt-slide .method-screen{padding-left:20px!important;padding-right:20px!important}
 .alt-slide [data-screen-label] *, .alt-slide [data-screen-label] *::before,.alt-slide [data-screen-label] *::after{box-sizing:border-box}
 .alt-slide [data-grid2]>*,.alt-slide .slide-content,.alt-slide .method-pair>*{min-width:0}
 .alt-slide #overview>*{flex-shrink:0}
 .alt-slide #overview [data-hero]{flex:0 0 auto;gap:28px!important;padding-block:28px!important}
 .alt-slide [data-hero] h1{font-size:clamp(28px,7vw,36px)!important;line-height:1.15!important}
 .alt-slide [data-hero] p{font-size:15px!important;line-height:1.6!important}
 .alt-slide [data-hero] alt-intro[compact]{width:100%;max-width:none}
 .alt-slide #overview>[data-pad]:last-child{padding-bottom:24px!important}
 .alt-slide #overview>[data-pad]:last-child>div{flex-direction:column;gap:8px!important}
 .alt-slide #exposure h2,.alt-slide #performance h2,.alt-slide .closing-screen h2{font-size:30px!important;line-height:1.15!important}
 .alt-slide #exposure h3,.alt-slide #performance h3{font-size:19px!important;line-height:1.4!important}
 .alt-slide #exposure>.slide-content>div:nth-child(2){padding:16px!important}
 .alt-slide #exposure>.slide-content>div:nth-child(2)>div:first-child{flex-wrap:wrap;gap:8px}
 .alt-slide .portfolio-map-scroll{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}
 .alt-slide .portfolio-map-scroll>div{margin-inline:0!important}
 .alt-slide .map-scroll-hint{display:block;margin:12px 0;color:#626a76;font-size:12px;line-height:1.5}
 .alt-slide .method-screen{justify-content:flex-start;padding-top:28px;padding-bottom:28px}
 .alt-slide .method-combined .method-pair{grid-template-columns:minmax(0,1fr);gap:24px}
 .alt-slide .method-combined .method-pair>[data-grid2]{gap:18px!important}
 .alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>p{min-height:0}
 .alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>div:first-of-type{min-height:0;padding:16px!important;margin-top:18px!important}
 .alt-slide .method-screen button{min-height:44px;display:inline-flex!important;align-items:center;line-height:1.4!important;white-space:normal;text-align:left}
 .alt-slide #performance [data-flow]{gap:18px!important;padding-block:24px!important}
 .alt-slide #performance [data-flow]>div:nth-child(even){transform:rotate(90deg);width:60px;margin:8px auto}
 .alt-slide [data-ledger]{padding:18px 14px!important}
 .alt-slide [data-ledger]>div[style*="grid-template-columns"]{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,.9fr)!important;gap:8px!important}
 .alt-slide [data-ledger]>div[style*="grid-template-columns"]>*{min-width:0;overflow-wrap:anywhere;letter-spacing:0!important}
 .alt-slide [data-ledger]>div[style*="margin-top:8px"]>span{font-size:9px!important}
 .alt-slide [data-ledger] button{min-height:44px;box-sizing:border-box!important;display:inline-flex!important;align-items:center}
 .alt-slide .closing-screen>div:first-child{padding-top:32px!important;padding-bottom:32px!important}
 .alt-slide .closing-screen>footer{display:flex!important;flex-direction:column;align-items:flex-start!important;gap:24px!important}
 .alt-slide .closing-screen>footer>div{width:100%;text-align:left!important}
 .alt-slide .closing-screen button{min-height:44px;max-width:100%}
 .site-section-nav{left:0;padding-left:0}.site-section-nav button{width:24px;height:36px}.site-section-nav .tick{margin:0}.site-section-nav .label{left:28px}
}
.map-scroll-hint{display:none}
@media(max-width:800px){.alt-slide .map-scroll-hint{display:block}}


/* Selected mobile layouts. Desktop presentation stays intact. */
.mobile-topology,.mobile-performance{display:none}
@media(max-width:800px){
 .alt-slide #exposure{display:none!important}
 .alt-slide #structure>:not(.mobile-topology){display:none!important}
 .alt-slide #structure>.mobile-topology{display:block;width:100%;max-width:600px!important;margin-inline:auto}
 .mobile-eyebrow{font-size:10px;line-height:1.5;letter-spacing:.1em;text-transform:uppercase;color:#71858e;margin:0 0 14px}
 .alt-slide .mobile-topology h2,.alt-slide .mobile-performance h2{font-size:30px!important;line-height:1.15!important;letter-spacing:-.025em;margin:0 0 22px;font-weight:600}
 .mobile-topology h2{color:#202b32}.overlap-graphic{display:block;width:100%;height:auto;max-height:210px;margin:20px 0;color:#607e74}
 .mobile-topology .overlap-graphic circle:nth-of-type(3),.mobile-topology .overlap-graphic circle:nth-of-type(4),.mobile-topology .overlap-graphic circle:nth-of-type(5){opacity:.2;transition:opacity .2s}
 .mobile-topology:has(details:first-of-type[open]) .overlap-graphic circle{opacity:1}
 .mobile-disclosure{border:1px solid #748e982d;border-radius:10px;background:#ffffff;margin:14px 0;color:#283740;overflow:hidden}
 .mobile-disclosure summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:15px 16px;min-height:50px;cursor:pointer;font-size:14px;font-weight:550;list-style:none}
 .mobile-disclosure summary::-webkit-details-marker{display:none}.mobile-disclosure summary:after{content:'+';font-size:20px;font-weight:400;color:#698b7e}
 .mobile-disclosure[open] summary:after{content:'−'}.mobile-disclosure[open] summary{border-bottom:1px solid #748e981c}
 .mobile-disclosure p{padding:0 16px 16px;margin:14px 0 0;font-size:14px;line-height:1.65}
 .mobile-disclosure summary:focus-visible{outline:2px solid #a8cebb;outline-offset:-4px}
 .alt-slide .method-combined .method-pair{gap:20px}
 .alt-slide .method-combined .method-pair>[data-grid2]{padding:20px!important;border:1px solid #233b431c!important;border-radius:12px;background:white;gap:12px!important}
 .alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>p{font-size:15px!important;line-height:1.65!important}
 .alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>div:first-of-type{padding:14px 0 0!important;border:0!important;border-top:1px solid #233b431c!important;border-radius:0!important;background:transparent!important}
 .alt-slide .method-combined .method-pair>[data-grid2]>div:last-child>div:last-child{display:none!important}
 .alt-slide #performance>.slide-content>div:not(.mobile-performance){display:none!important}
 .alt-slide #performance .mobile-performance{display:block;max-width:600px;margin:auto}
 .mobile-performance .mobile-eyebrow{color:#a4bcca}
 .mobile-scenarios{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 16px}
 .mobile-scenarios button{font:inherit;font-size:12px;line-height:1.4;border-radius:8px;padding:10px 12px;min-height:44px;background:transparent;cursor:pointer}
 .mobile-ledger-title{font-size:10px;line-height:1.6;letter-spacing:.06em;color:#9fb6c5;margin:16px 0 8px}
 .mobile-contribution{padding:18px 0;border-bottom:1px solid #afc0ce20}
 .mobile-contribution>div:first-child{display:flex;justify-content:space-between;gap:12px;align-items:baseline}
 .mobile-contribution strong{font-size:14px;font-weight:500;color:#e6eef3}
 .mobile-contribution>div:first-child>span{font-size:12px;color:#9fb6c5;text-align:right}
 .mobile-contribution-track{display:flex;align-items:center;gap:10px;margin-top:12px;min-width:0}
 .mobile-contribution-track i{display:block;height:8px;border-radius:3px;max-width:calc(100% - 22px);min-width:1px;flex-shrink:1}
 .mobile-contribution-track span{font-size:12px;color:#c5d4dc}
 .mobile-performance .mobile-disclosure{background:#283241;color:#c5d4dc;border-color:#8ca8bb33;margin-top:24px}
 .alt-slide .closing-screen>div:first-child{flex:0 0 auto;display:block!important}
 .alt-slide .closing-screen>div:first-child>[data-reveal]{text-align:left!important}
 .alt-slide .closing-screen>div:first-child p:first-of-type{display:none}
 .alt-slide .closing-screen>div:first-child>[data-reveal]>div:nth-of-type(2){width:100%;display:flex!important;margin-top:24px!important;justify-content:stretch!important}
 .alt-slide .closing-screen>div:first-child button:first-child{width:100%}
 .alt-slide .closing-screen>div:first-child button:nth-child(2){display:none!important}
 .alt-slide .closing-screen>footer{margin:0 20px 24px;padding:20px!important;border:1px solid #8ca8bb33!important;border-radius:12px;background:#293040!important}
 .alt-slide .closing-screen>footer>div:first-child{display:none}
 .alt-slide .closing-screen>footer a{min-height:44px;display:flex;align-items:center}
}

/* Original headline-first landing selected in the mobile screen chooser. */
@media(max-width:800px){
 .alt-slide #overview .headline-hero{grid-template-columns:minmax(0,1fr)!important;gap:24px!important}
 .headline-hero>div:first-child>p+p,.headline-hero .hero-tagline,.headline-hero .hero-waitlist-row{display:none!important}
 .alt-slide #overview>.headline-hero+[data-pad]{display:none!important}
}

/* The same animated introduction is shown on desktop and mobile. */
#overview .hero-games-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;max-width:100%;padding:12px 20px;border:1px solid #edf3f0;border-radius:10px;background:#edf3f0;color:#19352e;font:600 14px/1.5 'Instrument Sans',system-ui,sans-serif;letter-spacing:.01em;text-align:center;text-decoration:none;box-sizing:border-box;touch-action:manipulation}
#overview .hero-games-button:hover{background:#d5e6dc;border-color:#d5e6dc;color:#19352e}
#overview .hero-games-button:focus-visible{outline:2px solid #c1dfd1;outline-offset:4px}
@media(max-width:800px){
 .headline-hero .hero-harness{min-width:0;width:100%}
 .headline-hero .hero-harness alt-intro{display:block;width:100%;max-width:none;margin:0}
 #overview .hero-games-button{width:100%;min-height:48px}
}

/* Keep the main Games action directly below the animated introduction. */
.headline-hero .hero-games-actions{width:85%;margin:16px 0 0 auto;display:flex;align-items:center;justify-content:flex-start}
@media(max-width:1080px){.headline-hero .hero-games-actions{width:min(100%,448px);margin-left:0}}
@media(max-width:800px){.headline-hero .hero-games-actions{width:100%;margin-top:16px}}

/* Selected mobile landing: spacing 02 with swipe control 01. */
#overview .hero-swipe-actions{display:none}
@media(max-width:800px){
 .alt-slide #overview .headline-hero.mobile-landing-airy{display:flex!important;flex-direction:column;align-items:stretch!important;justify-content:flex-start;flex:1 0 auto!important;gap:36px!important;padding-top:24px!important;padding-bottom:max(56px,env(safe-area-inset-bottom))!important}
 #overview .mobile-landing-airy>div:first-child{flex-shrink:0}
 #overview .mobile-landing-airy h1{margin-top:40px!important}
 #overview .mobile-landing-airy .hero-supporting-copy{margin:32px 0 0!important}
 #overview .mobile-landing-airy .hero-harness{display:flex;flex-direction:column;flex-shrink:0;gap:24px;min-width:0;width:100%;margin-top:auto}
 #overview .mobile-landing-airy alt-intro{flex-shrink:0;margin:0!important}
 #overview .mobile-landing-airy .hero-games-actions{display:none!important}
 #overview .mobile-landing-airy .hero-swipe-actions{display:flex;flex-shrink:0;margin:0;padding:0;justify-content:center}
 #overview .mobile-landing-airy .hero-swipe-button{display:flex;align-items:center;justify-content:center;gap:10px;width:auto;min-width:160px;min-height:48px;padding:12px 20px;border:1px solid #afc4ce80;border-radius:999px;background:#293040;color:#edf3f0;font:600 14px/1.5 'Instrument Sans',system-ui,sans-serif;text-align:center;text-decoration:none;box-sizing:border-box;touch-action:manipulation}
 #overview .mobile-landing-airy .swipe-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0}
 #overview .mobile-landing-airy .hero-swipe-button:hover{background:#364355}
 #overview .mobile-landing-airy .hero-swipe-button:focus-visible{outline:2px solid #c1dfd1;outline-offset:4px}
}

/* Keep the existing See how it works video-request control available on mobile. */
@media(max-width:800px){
 .alt-slide .closing-screen>div:first-child button:nth-child(2){display:inline-flex!important;align-items:center;justify-content:center;width:100%;min-height:48px}
}