:root{--paper:#ffcc19;--ink:#181a19;--muted:#555b55;--yellow:#f4c400;--line:#ffffff40;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:64px}body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.65 Arial,'PingFang SC',sans-serif}
a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.4}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid currentColor;outline-offset:5px}
img{display:block;max-width:100%;height:auto}figure,h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:800;line-height:1.12;letter-spacing:-.045em}h2{font-size:clamp(40px,5.2vw,72px)}p{color:inherit}strong{font-weight:800}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.skip{position:fixed;top:-80px;z-index:40;background:white;padding:12px}.skip:focus{top:0}
.nav{height:64px;position:fixed;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;width:100%;padding:0 5vw;background:#7d858a;border-bottom:1px solid #ffffffb3;color:white}
.brand{display:flex;gap:8px;align-items:center;font-size:32px;font-weight:800;letter-spacing:-.065em}.brand img{width:38px;height:38px;object-fit:contain}.brand span{font-size:20px;font-weight:600;letter-spacing:0}.nav nav{display:flex;gap:28px;font-size:17px}.nav a:hover{opacity:.8}.nav-cta{background:var(--yellow);color:#161916;border-radius:30px;padding:8px 20px;font-size:16px;font-weight:750}
.hero-product{margin:0}.hero-product img{width:100%;object-fit:contain}
.inline-action{display:inline-flex;align-items:center;gap:22px;padding:8px 0;border:0;border-bottom:2px solid currentColor;background:transparent;color:inherit;font-size:19px;font-weight:750;line-height:1.4;text-align:left;min-height:44px}.inline-action:hover span{transform:translate(3px,-3px)}.inline-action span{transition:transform .18s}
.product-band{background:#ffcc19}.product-chapter{max-width:1520px;margin:0 auto;padding:100px max(5vw,24px);display:grid;grid-template-columns:.86fr 1.14fr;gap:30px;align-items:center}
.chapter-copy{min-width:0;position:relative;z-index:2}.chapter-copy p{font-size:clamp(20px,2vw,28px);line-height:1.5;margin:28px 0;max-width:600px}.chapter-copy h2+p{margin-top:30px}.chapter-copy h2:not(:first-child){margin-top:70px}
.quiet-note{display:block;font-size:13px;margin-top:25px;opacity:.72;text-decoration:underline;text-underline-offset:3px}
.native-figure{min-width:0;position:relative}.product-stage{position:relative;width:100%;height:660px;touch-action:pan-y}
.product-stage canvas{display:block;width:100%;height:100%;cursor:grab;touch-action:pan-y}.product-stage canvas:active{cursor:grabbing}.product-stage canvas:focus-visible{outline:2px solid #181a19;outline-offset:-3px}
.product-stage>img{position:absolute;width:100%;height:100%;object-fit:contain}.product-stage[data-ready]>img{display:none}
.scene-status:not(.sr-only){font-size:14px;margin-top:10px}
.inside-chapter{padding-top:80px;padding-bottom:80px}.inside-chapter .product-stage{height:700px}
.spark-chapter{grid-template-columns:1.14fr .86fr;padding-top:60px;padding-bottom:70px}
.spark-chapter .product-stage{height:590px}
.stand-chapter{padding-top:80px;padding-bottom:130px}.stand-chapter .product-stage{height:610px}
.reading-column{max-width:860px;margin:0 auto}.reading-column p{font-size:clamp(21px,2.1vw,29px);line-height:1.55;margin:32px 0 0}
.software-band{padding:110px max(5vw,24px);background:#202322;color:#fff}
.software-showcase{max-width:1200px;margin:55px auto 0}.software-showcase figure{margin-top:25px}.software-showcase img{width:100%;height:auto;aspect-ratio:1265/712;object-fit:contain;border:1px solid #ffffff20;border-radius:0}.software-showcase figcaption{font-size:13px;text-align:left;color:#b5bab7;margin:15px 0}.software-showcase .inline-action{font-size:16px}
.view-tabs{display:flex;flex-wrap:wrap;gap:30px}.view-tabs button{background:transparent;border:0;border-bottom:3px solid transparent;border-radius:0;padding:10px 0;font-size:20px;font-weight:750;color:#9da49f}.view-tabs button[aria-pressed=true]{border-color:#ffcc19;color:#ffcc19}
.companion{padding:110px max(8vw,24px);display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:40px;background:#ffcc19;overflow:hidden}
.companion .chapter-copy{max-width:600px;justify-self:end}.mascot-stage{position:relative;height:520px;min-width:0;isolation:isolate}.mascot-stage img,.mascot-stage canvas{position:absolute;width:100%;height:100%;object-fit:contain}.mascot-stage canvas{touch-action:pan-y;cursor:crosshair}.mascot-stage canvas:not([data-ready]){visibility:hidden}
.button{display:inline-flex;align-items:center;justify-content:center;gap:32px;padding:15px 30px;border-radius:40px;font-weight:800;font-size:23px;background:#ffcc19;color:#161916}
.try-section{padding:100px max(5vw,24px);background:#202322;color:#fff;text-align:center}.try-section h2{font-size:clamp(50px,7vw,96px);margin-bottom:36px}
.try-section details{max-width:820px;margin:60px auto 0;border-top:1px solid #ffffff35;font-size:14px;line-height:1.9;color:#c0c5c1;text-align:left}.try-section summary{cursor:pointer;text-align:center;padding:20px 0}.try-section details p{margin-top:15px}
.footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:35px 5vw;font-size:15px;border-top:1px solid #ffffff35;background:#202322;color:white}.footer .brand{font-size:28px}
[hidden]{display:none!important}
@media(min-width:1600px){.product-chapter{padding-left:60px;padding-right:60px}}
@media(max-width:900px){.product-chapter{gap:15px;padding-left:5vw;padding-right:5vw}.chapter-copy p{font-size:21px}.inside-chapter .product-stage{height:670px}.product-stage{height:500px}.spark-chapter .product-stage,.stand-chapter .product-stage{height:520px}.chapter-copy h2:not(:first-child){margin-top:45px}h2{font-size:44px}}
@media(max-width:650px){html{scroll-padding-top:58px}.product-chapter{display:flex;flex-direction:column;gap:10px;padding:60px 26px}.chapter-copy{width:100%}h2{font-size:39px;letter-spacing:-.04em}.chapter-copy p{font-size:20px;margin:22px 0;line-height:1.55}.chapter-copy h2+p{margin-top:23px}.chapter-copy h2:not(:first-child){margin-top:44px}.native-figure{width:calc(100% + 32px);max-width:calc(100vw - 20px)}.inside-chapter .product-stage{height:500px}.product-stage,.spark-chapter .product-stage,.stand-chapter .product-stage{height:430px}.spark-chapter .native-figure{order:2}.quiet-note{margin-top:18px}.inline-action{font-size:18px}.software-band{padding:65px 26px}.reading-column p{font-size:20px}.software-showcase{margin:35px -12px 0}.view-tabs{gap:24px}.view-tabs button{font-size:17px}.software-showcase figcaption{font-size:11px}.companion{padding:65px 26px;grid-template-columns:1fr;gap:15px}.mascot-stage{height:380px}.try-section{padding:65px 26px}.try-section h2{font-size:47px}.button{font-size:21px}.footer{padding:25px 26px;flex-wrap:wrap}.footer>span{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* Internal narrative alone is pinned. Keep the entire assembly inside the
   usable viewport below the nav; native stage cameras fit the full bounds. */
.inside-scroll{height:240svh;position:relative}
.inside-chapter{position:sticky;top:64px;height:calc(100svh - 64px);padding-top:28px;padding-bottom:28px}
.inside-chapter .native-figure,.inside-chapter .product-stage{height:100%;min-height:0}
.inside-chapter h2{font-size:clamp(34px,4vw,62px)}
.inside-chapter .chapter-copy h2:not(:first-child){margin-top:38px}
.inside-chapter .chapter-copy p{font-size:clamp(19px,1.7vw,26px);margin:24px 0}
.inside-chapter .quiet-note{margin-top:18px}
.product-stage canvas,.product-stage canvas:active{cursor:default}
.native-figure>.scene-status:not(.sr-only){position:absolute;bottom:6px;left:12px;right:12px;padding:8px;background:#ffcc19e8;text-align:center}
.software-showcase .inline-action{margin-top:20px}
@media(max-width:650px){
 .inside-scroll{height:230svh}
 .inside-chapter{top:58px;height:calc(100svh - 58px);padding:24px 26px 12px;display:grid;grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr);gap:8px}
 .inside-chapter h2{font-size:29px;line-height:1.14}
 .inside-chapter .chapter-copy p{font-size:16px;line-height:1.45;margin:14px 0}
 .inside-chapter .chapter-copy h2:not(:first-child){margin-top:20px}
 .inside-chapter .quiet-note{font-size:11px;margin-top:10px}
 .inside-chapter .native-figure{width:100%;max-width:100%;min-height:0}
}
@media(max-height:650px) and (min-width:651px){.inside-chapter h2{font-size:33px}.inside-chapter .chapter-copy p{font-size:17px;margin:18px 0}.inside-chapter .chapter-copy h2:not(:first-child){margin-top:24px}}
@media(prefers-reduced-motion:reduce){.inside-scroll{height:auto}.inside-chapter{position:relative;top:0;min-height:650px}.inside-chapter .product-stage{min-height:300px}}