/* ARIS scroll story. Shared by index.html and mobile.html.
   aris-story.js marks every [data-b] (beat) and [data-c] (chapter) element with
   data-s="on" | "past" | "next"; everything here keys off that. */

.as{--red:#c22a12;--ink:var(--color-text);--dim:var(--color-neutral-700);--top:66px;--ease:cubic-bezier(.2,.7,.2,1);
  position:relative;height:calc(var(--beats) * 70svh + 100svh);border-bottom:2px solid var(--ink)}
.as-stage{position:sticky;top:var(--top);height:calc(100svh - var(--top));overflow:hidden;
  display:grid;grid-template-columns:210px minmax(0,.85fr) minmax(0,1.1fr);background:var(--color-bg)}

/* chapter rail */
.as-rail{display:flex;flex-direction:column;justify-content:center;gap:2px;border-right:2px solid var(--ink);padding:0 0 0 0}
.as-rail button{all:unset;cursor:pointer;display:flex;align-items:baseline;gap:12px;padding:11px 16px 11px 24px;
  font:700 11px/1 Archivo,sans-serif;letter-spacing:.12em;color:var(--dim);position:relative;transition:color .3s}
.as-rail button::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:transparent;transition:background .3s}
.as-rail button[data-s=on]{color:var(--ink)}
.as-rail button[data-s=on]::before{background:var(--red)}
.as-rail button:hover{color:var(--red)}
.as-rail .n{flex:none;width:18px}
.as-rail .l{font-size:11.5px;line-height:1.35;letter-spacing:.1em;text-transform:uppercase}
.as-rail button:focus-visible{outline:2px solid var(--red);outline-offset:-2px}

/* text column: one beat at a time */
.as-text{position:relative;border-right:2px solid var(--ink)}
.as-t{position:absolute;left:48px;right:48px;top:50%;transform:translateY(calc(-50% + 24px));opacity:0;
  transition:opacity .45s var(--ease),transform .6s var(--ease);pointer-events:none}
.as-t[data-s=on]{opacity:1;transform:translateY(-50%);pointer-events:auto}
.as-t[data-s=past]{transform:translateY(calc(-50% - 24px))}
.as-k{font:700 11px/1 Archivo,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--red);margin:0 0 18px}
.as-t h3{font-size:clamp(34px,3.6vw,56px);line-height:.98;letter-spacing:-.04em;font-weight:900;margin:0;text-wrap:balance}
.as-t p{font-size:17px;line-height:1.5;color:var(--color-neutral-800);margin:20px 0 0;max-width:34ch;text-wrap:pretty}
.as-t a{color:var(--red)}
.as-hint{position:absolute;left:48px;bottom:28px;font:700 10.5px/1 Archivo,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);transition:opacity .4s}
.as-stage:not([data-beat="0"]) .as-hint{opacity:0}

/* visual column: one scene per chapter */
.as-vis{position:relative;background:#f7f3ea;overflow:hidden}
.as-sc{position:absolute;inset:0;display:grid;place-items:center;opacity:0;visibility:hidden;transition:opacity .5s var(--ease),visibility 0s .5s}
.as-sc[data-s=on]{opacity:1;visibility:visible;transition:opacity .5s var(--ease),visibility 0s}
.as-f{transition:opacity .5s var(--ease),transform .7s var(--ease)}

/* 1 how it works */
.as-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.as-sc1 .as-photo{opacity:0}
.as-sc1 .as-photo[data-s=on]{opacity:1}
.as-live{position:relative;height:min(84%,640px);aspect-ratio:496/864;max-width:88%;overflow:hidden;background:#1a1918;color:#fff;opacity:0;transform:translateY(30px)}
.as-live[data-s=on]{opacity:1;transform:none}
.as-live video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.as-live::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(26,25,24,.8) 0%,rgba(26,25,24,0) 20%,rgba(26,25,24,0) 46%,rgba(26,25,24,.9) 74%,#1a1918 100%)}
.as-lt,.as-lb{position:absolute;left:0;right:0;z-index:1}
.as-lt{top:0;padding:18px 20px 0;display:flex;justify-content:space-between;align-items:flex-start}
.as-lb{bottom:0;padding:0 20px 14px}
.as-lk{display:block;font:700 9.5px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.55)}
.as-lt b{display:block;font-size:20px;font-weight:800;line-height:.95;margin-top:6px}
.as-lt i{display:flex;align-items:center;gap:7px;font:normal 800 20px/1 Archivo,sans-serif;font-variant-numeric:tabular-nums}
.as-lt i::before{content:"";width:8px;height:8px;background:var(--red)}
.as-lrow{display:flex;justify-content:space-between;align-items:flex-end;gap:10px}
.as-ln{font-size:clamp(64px,11svh,108px);font-weight:900;line-height:.82;letter-spacing:-.06em;margin-left:-4px;font-variant-numeric:tabular-nums;transform-origin:left bottom}
.as-lm{display:grid;gap:10px;text-align:right}
.as-lm b{display:block;font-size:clamp(26px,4svh,36px);font-weight:900;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin-bottom:4px}
.as-lm .w{color:#ff5a45}
.as-lg{position:relative;height:clamp(52px,9svh,84px);margin-top:14px;border-bottom:1px solid rgba(255,255,255,.2)}
.as-lg canvas{display:block;width:100%;height:100%}
.as-fine{display:block;margin-top:7px;font-size:10px;color:rgba(255,255,255,.45)}

/* 2 the idea */
.as-cloud{position:relative;width:min(88%,560px);aspect-ratio:1/1}
.as-chip{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%) rotate(var(--r,0deg));white-space:nowrap;
  padding:12px 18px;border:2px solid var(--ink);background:var(--color-bg);font:800 15px/1 Archivo,sans-serif;letter-spacing:-.01em;
  transition:opacity .5s var(--ease),transform .8s var(--ease),left .8s var(--ease),top .8s var(--ease),background .4s,color .4s}
/* beat b: every other idea flies out from under the winner, which takes the centre */
.as-sc2[data-beat-in="b"] .as-chip:not(.win),.as-sc2[data-beat-in="c"] .as-chip:not(.win){opacity:0;
  transform:translate(calc(-50% + var(--fx)),calc(-50% + var(--fy))) rotate(calc(var(--r,0deg) * 5));
  transition:opacity .9s var(--ease) .15s,transform 1.1s cubic-bezier(.5,0,.2,1)}
.as-sc2[data-beat-in="b"] .as-chip:nth-child(3n),.as-sc2[data-beat-in="c"] .as-chip:nth-child(3n){transition-delay:.12s}
.as-sc2[data-beat-in="b"] .as-chip:nth-child(3n+1),.as-sc2[data-beat-in="c"] .as-chip:nth-child(3n+1){transition-delay:.06s}
.as-sc2[data-beat-in="b"] .as-chip.win{left:50%;top:40%;transform:translate(-50%,-50%) scale(1.9);background:var(--red);border-color:var(--red);color:#fff;transition-delay:.35s}
.as-sc2[data-beat-in="c"] .as-chip.win{left:50%;top:40%;transform:translate(-50%,-50%) scale(1.9);background:var(--red);border-color:var(--red);color:#fff;opacity:0}

/* beat c: the first prototype, on my arm, recording */
.as-proto{position:absolute;left:50%;top:50%;height:min(88%,680px);aspect-ratio:4/5;max-width:92%;overflow:hidden;background:#1a1918;
  transform:translate(-50%,-46%) scale(.94);opacity:0;transition:opacity .6s var(--ease),transform .9s var(--ease)}
.as-proto[data-s=on]{opacity:1;transform:translate(-50%,-50%)}
.as-proto img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform-origin:55% 31%;transition:transform 6s cubic-bezier(.2,.6,.2,1)}
.as-proto[data-s=on] img{transform:scale(1.28)}
.as-pin{position:absolute;left:55%;top:31%;width:22%;aspect-ratio:1;transform:translate(-50%,-50%) scale(1.6);border:3px solid var(--red);border-radius:50%;opacity:0;transition:opacity .4s,transform .8s var(--ease)}
.as-proto[data-s=on] .as-pin{opacity:1;transform:translate(-50%,-50%);transition-delay:1.2s}
.as-pin-l{position:absolute;left:55%;top:calc(31% - 13% - 34px);transform:translateX(-50%);white-space:nowrap;padding:7px 10px;background:var(--red);color:#fff;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;opacity:0;transition:opacity .4s}
.as-proto[data-s=on] .as-pin-l{opacity:1;transition-delay:1.6s}
.as-rec{position:absolute;left:0;right:0;bottom:0;padding:14px 16px;background:rgba(26,25,24,.88);color:#fff;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:center}
.as-rec b{font:800 11px/1 Archivo,sans-serif;letter-spacing:.14em;color:#ff5a45;animation:as-blink 1.2s steps(1) infinite}
.as-rec span{font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.6)}
.as-rec-bars{grid-column:1/-1;display:flex;align-items:flex-end;gap:3px;height:40px;margin-top:8px}
.as-rec-bars i{flex:1;background:rgba(255,255,255,.75);height:20%;animation:as-rec 1.4s ease-in-out infinite;animation-delay:calc(var(--i) * -.09s)}
.as-rec-bars i:nth-child(7n){background:#ff5a45}
@keyframes as-rec{0%,100%{height:12%}50%{height:92%}}
@keyframes as-blink{50%{opacity:.25}}
/* ...and under it, a set count that gets lost: 6, 7, 8, ? */
.as-lost{position:absolute;left:50%;top:64%;transform:translate(-50%,-50%);width:3ch;height:1em;font:900 clamp(64px,9vw,110px)/1 Archivo,sans-serif;letter-spacing:-.05em;text-align:center;opacity:0;transition:opacity .5s var(--ease)}
.as-lost span{position:absolute;inset:0;opacity:0}
.as-lost span:last-child{color:var(--red)}
.as-sc2[data-beat-in="b"] .as-lost{opacity:1;transition-delay:.9s}
.as-sc2[data-beat-in="b"] .as-lost span{animation:as-lost 3.2s steps(1) infinite}
.as-lost span:nth-child(2){animation-delay:.8s!important}
.as-lost span:nth-child(3){animation-delay:1.6s!important}
.as-lost span:nth-child(4){animation-delay:2.4s!important}
@keyframes as-lost{0%{opacity:1}25%,100%{opacity:0}}
.as-sc2[data-beat-in="c"] 
/* 3 the algorithm */
.as-sig{position:relative;width:min(90%,620px);aspect-ratio:5/3;border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);background:var(--color-bg)}
.as-sig canvas{position:absolute;inset:0;width:100%;height:100%}
.as-sig-l{position:absolute;left:14px;top:12px;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.as-tiles{position:absolute;left:0;right:0;bottom:-2px;transform:translateY(100%);opacity:0;transition:opacity .3s;display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--ink);border:2px solid var(--ink);border-top:0}
.as-tiles div{background:var(--color-bg);padding:14px 12px;opacity:0;transform:translateY(10px);transition:opacity .4s var(--ease),transform .5s var(--ease)}
.as-tiles b{display:block;font-size:24px;font-weight:900;letter-spacing:-.03em;line-height:1}
.as-tiles small{display:block;margin-top:6px;font:700 9.5px/1.2 Archivo,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.as-sc3[data-beat-in="d"] .as-tiles{opacity:1}
.as-sc3[data-beat-in="d"] .as-tiles div{opacity:1;transform:none}
.as-sc3[data-beat-in="d"] .as-tiles div:nth-child(2){transition-delay:.08s}
.as-sc3[data-beat-in="d"] .as-tiles div:nth-child(3){transition-delay:.16s}
.as-sc3[data-beat-in="d"] .as-tiles div:nth-child(4){transition-delay:.24s}
.as-sc3{padding-bottom:70px}

/* 4 the hardware: nope, not me. enter the team */
.as-spot{position:absolute;inset:0;background:#1a1918;overflow:hidden}
.as-beam{position:absolute;left:50%;top:-6%;width:78%;height:92%;transform:translateX(-50%);
  clip-path:polygon(43% 0,57% 0,100% 100%,0 100%);background:linear-gradient(180deg,rgba(255,244,214,.34),rgba(255,244,214,.08))}
.as-floor{position:absolute;left:50%;bottom:14%;width:70%;height:12%;transform:translateX(-50%);border-radius:50%;background:radial-gradient(closest-side,rgba(255,244,214,.3),transparent)}
.as-who{position:absolute;left:50%;bottom:21%;z-index:1;transform:translate(-50%,0);text-align:center;white-space:nowrap;
  padding:22px 34px 24px;background:var(--color-bg);border:2px solid var(--ink);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.as-who small{display:block;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:10px}
.as-who b{display:block;font-size:clamp(34px,4vw,56px);font-weight:900;letter-spacing:-.04em;line-height:1}
.as-who.me{transition:transform .7s cubic-bezier(.5,0,.3,1),opacity .5s}
.as-who.me[data-s=on]{animation:as-shrug .5s ease-in-out 1.15s 2}
.as-who.me[data-s=past]{transform:translate(-50%,0) translateX(-150%) rotate(-16deg);opacity:0}
.as-nope{position:absolute;right:-34px;top:-26px;padding:6px 12px;border:4px solid var(--red);color:var(--red);background:var(--color-bg);
  font:900 30px/1 Archivo,sans-serif;letter-spacing:-.01em;text-transform:uppercase;transform:rotate(-12deg) scale(2.6);opacity:0;
  transition:transform .35s cubic-bezier(.3,1.6,.5,1),opacity .15s}
.as-who.me[data-s=on] .as-nope,.as-who.me[data-s=past] .as-nope{transform:rotate(-12deg) scale(1);opacity:1;transition-delay:.55s}
.as-who.team{transform:translate(-50%,190%);opacity:0}
.as-who.team b{color:var(--red)}
.as-who.team[data-s=on]{opacity:1;animation:as-bounce 1s cubic-bezier(.3,.7,.3,1) .35s both}
.as-hwtag{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%) rotate(var(--r)) scale(0);padding:9px 13px;
  border:2px solid var(--color-bg);color:var(--color-bg);font:800 13px/1 Archivo,sans-serif;white-space:nowrap;transition:transform .25s ease-in}
.as-hwtag[data-s=on]{transform:translate(-50%,-50%) rotate(var(--r)) scale(1);transition:transform .5s cubic-bezier(.3,1.7,.5,1) var(--d)}
@keyframes as-bounce{0%{transform:translate(-50%,190%)}55%{transform:translate(-50%,-22%)}75%{transform:translate(-50%,6%)}88%{transform:translate(-50%,-3%)}100%{transform:translate(-50%,0)}}
@keyframes as-shrug{0%,100%{transform:translate(-50%,0) rotate(0)}30%{transform:translate(-50%,0) rotate(-3deg)}70%{transform:translate(-50%,0) rotate(3deg)}}

/* 4 the app: phone cross-fade */
.as-phone{position:relative;height:min(82%,620px);aspect-ratio:640/1212;background:#000;border:10px solid #1a1918;border-radius:34px;overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.18)}
.as-phone img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top;opacity:0;transform:scale(1.03);transition:opacity .5s var(--ease),transform .8s var(--ease)}
.as-phone img[data-s=on]{opacity:1;transform:none}

/* 5 the back end: a pipeline that lights up */
.as-pipe{display:grid;gap:0;width:min(86%,420px)}
.as-node{display:grid;grid-template-columns:44px 1fr;align-items:center;gap:16px;padding:16px 18px;border:2px solid var(--color-neutral-300);background:var(--color-bg);color:var(--dim);transition:border-color .4s,color .4s,background .4s,transform .5s var(--ease)}
.as-node i{font:normal 900 13px/1 Archivo,sans-serif;width:44px;height:44px;display:grid;place-items:center;border:2px solid currentColor}
.as-node b{display:block;font-size:20px;font-weight:900;letter-spacing:-.02em}
.as-node small{display:block;font-size:12.5px;margin-top:3px}
.as-node[data-s=on],.as-node[data-s=past]{border-color:var(--ink);color:var(--ink)}
.as-node[data-s=on]{background:#fff;transform:translateX(10px)}
.as-node[data-s=on] i{background:var(--red);border-color:var(--red);color:#fff}
.as-wire{height:26px;width:2px;margin-left:39px;background:var(--color-neutral-300);position:relative;overflow:hidden}
.as-wire::after{content:"";position:absolute;inset:0;background:var(--red);transform:scaleY(0);transform-origin:top;transition:transform .5s var(--ease)}
.as-wire[data-s=on]::after,.as-wire[data-s=past]::after{transform:none}

/* 6 out in the world */
.as-sc6 .as-photo{opacity:0;transform:scale(1.04)}
.as-sc6 .as-photo[data-s=on]{opacity:1;transform:none}
.as-cap{position:absolute;left:0;bottom:0;padding:10px 14px;background:var(--ink);color:var(--color-bg);font:700 10px/1.2 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;opacity:0;transition:opacity .4s}
.as-cap[data-s=on]{opacity:1}
.as-marq{position:absolute;left:0;right:0;bottom:22%;background:var(--red);color:#fff;overflow:hidden;padding:18px 0;opacity:0;transition:opacity .4s}
.as-marq[data-s=on]{opacity:1}
.as-marq div{display:flex;gap:44px;width:max-content;animation:as-marq 26s linear infinite;font:900 26px/1 Archivo,sans-serif;letter-spacing:-.02em;text-transform:uppercase}
.as-marq span::after{content:"·";margin-left:44px;opacity:.5}
@keyframes as-marq{to{transform:translateX(-50%)}}
.as-game{position:absolute;inset:0;display:grid;place-items:center;background:#1a1918;color:#fff;opacity:0;transition:opacity .5s}
.as-game[data-s=on]{opacity:1}
.as-game-b{width:min(80%,380px);text-align:center}
.as-game-b small{display:block;font:700 11px/1 Archivo,sans-serif;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.6)}
.as-game-b b{display:block;font-size:clamp(110px,18svh,170px);font-weight:900;line-height:.9;letter-spacing:-.06em;margin:18px 0 8px;font-variant-numeric:tabular-nums}
.as-game-bar{height:10px;background:rgba(255,255,255,.14);margin-top:22px}
.as-game-bar i{display:block;height:100%;width:0;background:var(--red)}

/* 7 what it became */
.as-gen{position:relative;width:100%;height:100%}
.as-gp{position:absolute;left:50%;top:50%;height:min(70%,540px);transform:translate(-50%,-50%);transition:transform .9s var(--ease),opacity .6s var(--ease)}
.as-gp .as-phone{height:100%}
.as-gp figcaption{position:absolute;left:0;right:0;top:calc(100% + 14px);text-align:center;font:900 20px/1 Archivo,sans-serif;letter-spacing:-.02em;white-space:nowrap}
.as-gp figcaption small{display:block;margin-top:6px;font:700 10px/1.3 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.as-gp.pro,.as-gp.go{opacity:0}
.as-sc7[data-beat-in="b"] .as-gp.one{opacity:0;transform:translate(-50%,-50%) scale(.8)}
.as-sc7[data-beat-in="b"] .as-gp.pro{opacity:1;transform:translate(-112%,-54%)}
.as-sc7[data-beat-in="b"] .as-gp.go{opacity:1;transform:translate(12%,-54%)}
.as-gp.pro figcaption{color:var(--red)}
.as-gp.go figcaption{color:#4a8060}
.as-gp.go .as-phone{aspect-ratio:340/721}
.as-gp.pro .as-phone{aspect-ratio:340/725}

/* overview: what ARIS is today, before the story */
.ao{--red:#c22a12;--ink:var(--color-text);display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);border-bottom:2px solid var(--ink)}
.ao-main{padding:64px 56px 56px 40px;display:flex;flex-direction:column;justify-content:center}
.ao-k{font:700 11px/1 Archivo,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--red);margin-bottom:18px}
.ao h2{font-size:clamp(40px,4.4vw,72px);line-height:.95;letter-spacing:-.045em;font-weight:900;margin:0;max-width:14ch;text-wrap:balance}
.ao-main>p{font-size:19px;line-height:1.5;color:var(--color-neutral-800);margin:24px 0 36px;max-width:40ch;text-wrap:pretty}
.ao-facts{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--color-divider);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);margin-bottom:28px}
.ao-f{display:block;background:var(--color-bg);padding:18px 18px 20px;text-decoration:none!important;color:var(--ink)!important}
.ao-f small{display:block;font:700 10.5px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--color-neutral-700);margin-bottom:10px}
.ao-f b{display:block;font-size:22px;font-weight:900;letter-spacing:-.025em;line-height:1.1}
.ao-f span{display:block;font-size:13px;color:var(--color-neutral-800);margin-top:6px}
a.ao-f{transition:background .2s}
a.ao-f b{color:var(--red)}
a.ao-f:hover{background:#fff}
.ao-btns{display:flex;gap:10px;flex-wrap:wrap}
.ao-vis{position:relative;background:#a8391f;border-left:2px solid var(--ink);min-height:560px;overflow:hidden}
.ao-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:84% 45%}
.ao-cap{position:absolute;left:0;bottom:0;padding:9px 12px;background:var(--ink);color:var(--color-bg);font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase}
.ao-apps{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--ink);border-top:2px solid var(--ink)}
.ao-app{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;padding:32px 40px;background:#f7f3ea}
.ao-ph{width:150px;aspect-ratio:340/725;border:7px solid #1a1918;border-radius:24px;overflow:hidden;background:#000;box-shadow:0 18px 40px rgba(0,0,0,.18)}
.ao-ph img{width:100%;height:100%;object-fit:cover;display:block}
.ao-app small{display:block;font:700 10.5px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--color-neutral-700);margin-bottom:10px}
.ao-app b{display:block;font-size:34px;font-weight:900;letter-spacing:-.035em;line-height:1}
.ao-app.pro b{color:var(--red)}.ao-app.go b{color:#4a8060}
.ao-app span{display:block;font-size:15px;line-height:1.5;color:var(--color-neutral-800);margin-top:10px;max-width:28ch}
.ao-go{grid-column:1/-1;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:32px;padding:26px 40px;border-top:2px solid var(--ink);
  background:var(--red);color:#fff!important;text-decoration:none!important;transition:background .2s}
.ao-go:hover{background:#a8230f}
.ao-go small{display:block;font:700 10.5px/1 Archivo,sans-serif;letter-spacing:.16em;text-transform:uppercase;opacity:.75;margin-bottom:8px}
.ao-go b{font-size:30px;font-weight:900;letter-spacing:-.03em}
.ao-go em{font-style:normal;font-size:15px;opacity:.85}
.ao-go i{font-style:normal;font-size:34px;font-weight:900;animation:ao-bob 1.6s ease-in-out infinite}
@keyframes ao-bob{50%{transform:translateY(6px)}}

/* phones */
@media (max-width:760px){
  .as{--top:62px;height:calc(var(--beats) * 64svh + 100svh)}
  .as-stage{grid-template-columns:1fr;grid-template-rows:6px minmax(0,1.35fr) minmax(0,1fr)}
  .as-rail{flex-direction:row;gap:3px;border:0;padding:0}
  .as-rail button{flex:1;padding:0;font-size:0;height:6px;background:var(--color-neutral-300)}
  .as-rail .l{display:none}
  .as-rail button::before{display:none}
  .as-rail button[data-s=on],.as-rail button[data-s=past]{background:var(--red)}
  .as-vis{border-bottom:2px solid var(--ink)}
  .as-text{order:2;border:0}
  .as-t{left:16px;right:16px;top:22px;transform:translateY(18px)}
  .as-t[data-s=on]{transform:none}
  .as-t[data-s=past]{transform:translateY(-18px)}
  .as-k{margin-bottom:10px}
  .as-t h3{font-size:clamp(26px,8vw,34px)}
  .as-t p{font-size:15px;margin-top:12px}
  .as-hint{left:16px;bottom:16px}
  .as-live{height:94%}
  .as-cloud{width:min(94%,360px)}
  .as-chip{font-size:10.5px;padding:6px 8px;border-width:1.5px}
    .as-sig{width:92%}.as-sc3{padding-bottom:64px}
  .as-tiles b{font-size:18px}.as-tiles div{padding:10px 8px}
  .as-phone{height:88%;border-width:7px;border-radius:24px}
  .as-pipe{width:88%}.as-node{padding:9px 12px;grid-template-columns:34px 1fr}.as-node i{width:34px;height:34px}.as-node b{font-size:16px}.as-wire{height:12px;margin-left:29px}
  .as-marq div{font-size:18px}
  .as-who{padding:14px 20px 16px}.as-who b{font-size:28px}.as-nope{font-size:20px;right:-22px;top:-20px;border-width:3px}.as-hwtag{font-size:10.5px;padding:6px 9px}
  .as-gp{height:66%;top:44%}
  .as-gp figcaption{font-size:15px}
  .ao{grid-template-columns:1fr}
  .ao-main{padding:28px 16px 24px}
  .ao h2{font-size:clamp(30px,9vw,40px)}
  .ao-main>p{font-size:16px;margin:16px 0 22px}
  .ao-f{padding:14px 12px 16px}.ao-f b{font-size:17px}.ao-f span{font-size:12px}
  /* on phones the same photo already opens the page as the hero */
  .ao-vis{display:none}
  .ao-app{grid-template-columns:1fr;gap:14px;padding:20px 12px;justify-items:center;text-align:center}
  .ao-ph{width:112px;border-width:5px;border-radius:18px}
  .ao-app b{font-size:22px}.ao-app span{font-size:12.5px}
  .ao-go{grid-template-columns:1fr auto;gap:12px;padding:18px 16px}
  .ao-go b{font-size:22px}.ao-go em{display:none}
}


/* ---------- HexR scenes (the story shares .as / .ao with ARIS) ---------- */
/* the glove and its six points of touch */
.hx-glove{position:absolute;left:50%;top:5%;height:90%;aspect-ratio:520/1266;transform:translateX(-50%);transition:transform .8s var(--ease)}
.hx-glove img{width:100%;height:100%;display:block;filter:drop-shadow(0 30px 40px rgba(0,0,0,.18))}
.hx .as-stage[data-beat="1"] .hx-glove{transform:translateX(-80%)}
.hx-pt{position:absolute;left:var(--x);top:var(--y);width:0;height:0}
.hx-pt i{position:absolute;left:-9px;top:-9px;width:18px;height:18px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px rgba(255,255,255,.85);transform:scale(0);transition:transform .4s cubic-bezier(.3,1.7,.5,1) var(--d)}
.hx-pt i::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--red);opacity:0}
.hx-pt em{position:absolute;left:14px;top:-9px;font:normal 800 11px/18px Archivo,sans-serif;letter-spacing:.1em;text-transform:uppercase;padding:0 7px;background:var(--ink);color:var(--color-bg);white-space:nowrap;opacity:0;transition:opacity .3s var(--d)}
.hx-pt[data-s=on] i{transform:scale(1)}
.hx-pt[data-s=on] i::after{animation:hx-ping 1.6s ease-out calc(var(--d) + .4s) infinite}
.hx-pt[data-s=on] em{opacity:1}
@keyframes hx-ping{0%{transform:scale(1);opacity:.9}100%{transform:scale(2.6);opacity:0}}
.hx-specs{position:absolute;right:6%;top:50%;transform:translate(20px,-50%);display:grid;gap:2px;background:var(--ink);border:2px solid var(--ink);opacity:0;transition:opacity .5s .5s,transform .7s var(--ease) .5s}
.hx-specs[data-s=on]{opacity:1;transform:translate(0,-50%)}
.hx-specs div{background:var(--color-bg);padding:16px 22px}
.hx-specs b{display:block;font-size:34px;font-weight:900;letter-spacing:-.04em;line-height:1}
.hx-specs small{display:block;margin-top:5px;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}

/* lab to real world: one card splits into two */
.hx-half{position:absolute;left:50%;top:50%;background:var(--color-bg);border:2px solid var(--ink);padding:26px 28px;z-index:1}
/* beat a: the NUS prototype fills the panel; beat b: it darkens behind the split */
.hx-lab{position:absolute;inset:0;transition:filter .6s,transform 1.2s var(--ease)}
.hx-lab img{width:100%;height:100%;object-fit:cover;object-position:50% 55%;display:block}
.hx-lab[data-s=on]{transform:scale(1.04)}
.hx-lab[data-s=past]{filter:brightness(.28) blur(2px)}
.hx-lab[data-s=past] .as-cap{opacity:0}
.hx-lab .as-cap{opacity:1}
.hx-half small{display:block;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:10px}
.hx-half b{display:block;font-size:44px;font-weight:900;letter-spacing:-.04em;line-height:1}
.hx-half{width:min(40%,280px);transform:translate(-50%,-50%) scale(.9);opacity:0;transition:transform .8s cubic-bezier(.3,1.4,.5,1) .15s,opacity .3s .15s}
.hx-half ul{margin:16px 0 0;padding:0;list-style:none}
.hx-half li{font-size:14.5px;padding:8px 0;border-top:1px solid var(--color-neutral-300)}
.hx-half.me{border-color:var(--red);box-shadow:inset 0 5px 0 var(--red)}
.hx-half.me b{color:var(--red)}
.hx-half.team[data-s=on]{opacity:1;transform:translate(-106%,-50%)}
.hx-half.me[data-s=on]{opacity:1;transform:translate(6%,-50%)}

/* every headset: a hub that lights its spokes */
.hx-hub{position:relative;width:min(88%,520px);aspect-ratio:1/1}
.hx-wires{position:absolute;inset:0;width:100%;height:100%}
.hx-wires line{stroke:var(--red);stroke-width:.6;stroke-dasharray:60;stroke-dashoffset:60}
.hx-sc-hub[data-s=on] .hx-wires line{animation:hx-draw .6s ease-out forwards}
.hx-sc-hub[data-s=on] .hx-wires line:nth-child(2){animation-delay:.3s}
.hx-sc-hub[data-s=on] .hx-wires line:nth-child(3){animation-delay:.6s}
@keyframes hx-draw{to{stroke-dashoffset:0}}
.hx-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:120px;height:120px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font:900 26px/1 Archivo,sans-serif;letter-spacing:-.02em;box-shadow:0 0 0 10px rgba(255,255,255,.7)}
.hx-node{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%) scale(.6);opacity:0;background:var(--color-bg);border:2px solid var(--ink);padding:14px 18px;text-align:center;white-space:nowrap}
.hx-sc-hub[data-s=on] .hx-node{animation:hx-pop .5s cubic-bezier(.3,1.7,.5,1) calc(var(--d) + .3s) forwards}
@keyframes hx-pop{to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
.hx-node b{display:block;font-size:20px;font-weight:900;letter-spacing:-.02em}
.hx-node small{display:block;margin-top:4px;font:700 10px/1 Archivo,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.hx-track{position:absolute;left:50%;top:64%;transform:translate(-50%,10px);white-space:nowrap;padding:10px 16px;background:var(--ink);color:var(--color-bg);font:800 13px/1 Archivo,sans-serif;letter-spacing:.06em;text-transform:uppercase;opacity:0;transition:opacity .4s,transform .5s var(--ease)}
.hx-track span{color:#7be08f;margin-right:6px}
.hx-track[data-s=on]{opacity:1;transform:translate(-50%,0)}

/* developer guide and developer page, in one browser window */
.hx-browser{position:relative;width:min(92%,640px);aspect-ratio:16/11;background:#fff;border:2px solid var(--ink);box-shadow:0 30px 60px rgba(0,0,0,.14);overflow:hidden}
.hx-bar{height:38px;display:flex;align-items:center;gap:6px;padding:0 12px;border-bottom:2px solid var(--ink);background:var(--color-bg);position:relative}
.hx-bar i{width:10px;height:10px;border-radius:50%;border:2px solid var(--ink)}
.hx-url{position:absolute;left:70px;right:12px;top:8px;height:20px;padding:0 10px;background:#fff;border:1px solid var(--color-neutral-300);font:600 11.5px/20px Archivo,sans-serif;color:var(--dim);opacity:0;transition:opacity .3s}
.hx-url[data-s=on]{opacity:1}
.hx-pane{position:absolute;left:0;right:0;top:38px;bottom:0;opacity:0;transform:translateY(12px);transition:opacity .4s,transform .5s var(--ease)}
.hx-pane[data-s=on]{opacity:1;transform:none}
.hx-pane.docs{display:grid;grid-template-columns:38% 1fr}
.hx-side{margin:0;padding:16px 0;list-style:none;border-right:1px solid var(--color-neutral-300);background:#faf8f4}
.hx-side li{padding:7px 16px;font-size:12.5px;color:var(--dim)}
.hx-side li:nth-child(3){color:var(--ink);font-weight:700;box-shadow:inset 3px 0 0 var(--red)}
.hx-doc{padding:20px 22px}
.hx-doc small{font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}
.hx-doc b{display:block;font-size:24px;font-weight:900;letter-spacing:-.03em;margin:8px 0 14px}
.hx-doc p{height:8px;background:var(--color-neutral-300);margin:0 0 8px;border-radius:4px}
.hx-doc p.s{width:70%}
.hx-doc pre{margin:16px 0 0;padding:14px;background:#1a1918;color:#f2f2f2;font:500 12px/1.6 ui-monospace,Menlo,Consolas,monospace;white-space:pre-wrap}
.hx-doc pre .c{color:#9a958f}
.hx-pane.dev{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:18px}
.hx-card{border:2px solid var(--ink);padding:16px;background:#fff;transform:translateY(16px);opacity:0}
.hx-pane.dev[data-s=on] .hx-card{animation:hx-rise .5s var(--ease) forwards}
.hx-pane.dev[data-s=on] .hx-card:nth-child(2){animation-delay:.1s}
.hx-pane.dev[data-s=on] .hx-card:nth-child(3){animation-delay:.2s}
.hx-pane.dev[data-s=on] .hx-card:nth-child(4){animation-delay:.3s}
@keyframes hx-rise{to{opacity:1;transform:none}}
.hx-card small{display:block;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--red);margin-bottom:8px}
.hx-card b{display:block;font-size:19px;font-weight:900;letter-spacing:-.02em}
.hx-card span{display:block;margin-top:6px;font-size:12.5px;color:var(--color-neutral-800)}

/* the demos: a headset view cycling through scenes */
.hx-view{position:relative;width:min(92%,680px);aspect-ratio:16/10;background:#000;border-radius:28px;overflow:hidden;box-shadow:0 0 0 10px #1a1918,0 30px 60px rgba(0,0,0,.25)}
.hx-view img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0}
.hx-cap{position:absolute;left:18px;bottom:18px;padding:8px 12px;background:var(--red);color:#fff;font:800 12px/1 Archivo,sans-serif;letter-spacing:.12em;text-transform:uppercase;opacity:0}
.hx-view[data-s=on] img,.hx-view[data-s=on] .hx-cap{animation:hx-cycle 8s linear infinite;animation-delay:calc(var(--i) * 2s)}
@keyframes hx-cycle{0%{opacity:0}4%,25%{opacity:1}29%,100%{opacity:0}}
.hx-rec{position:absolute;right:18px;top:16px;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.7)}

/* the demos: the tutorial scenes, the Sandbox, then the games */
.hx-sc-demo .hx-view{transition:opacity .5s,transform .6s var(--ease)}
.hx-sc-demo .hx-view[data-s=past]{opacity:0;transform:scale(.92)}
.hx-sand{position:absolute;left:50%;top:50%;width:min(92%,640px);transform:translate(-50%,-46%);opacity:0;transition:opacity .4s,transform .6s var(--ease)}
.hx-sand[data-s=on]{opacity:1;transform:translate(-50%,-50%)}
.hx-sand-h{margin-bottom:14px}
.hx-sand-h small{display:block;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:8px}
.hx-sand-h b{font-size:36px;font-weight:900;letter-spacing:-.04em}
.hx-sand-g{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--ink);border:2px solid var(--ink)}
.hx-sb{background:var(--color-bg);padding:18px 16px;min-height:96px;opacity:0;transform:scale(.9)}
.hx-sand[data-s=on] .hx-sb{animation:hx-pop2 .45s cubic-bezier(.3,1.6,.5,1) calc(.15s + var(--i) * .09s) forwards}
@keyframes hx-pop2{to{opacity:1;transform:none}}
.hx-sb b{display:block;font-size:18px;font-weight:900;letter-spacing:-.02em;color:var(--red)}
.hx-sb span{display:block;margin-top:6px;font-size:12.5px;line-height:1.35;color:var(--color-neutral-800)}
.hx-shot{position:absolute;left:50%;top:50%;width:min(92%,680px);margin:0;transform:translate(-50%,-44%) rotate(-1.5deg);opacity:0;background:#fff;padding:10px 10px 0;box-shadow:0 24px 50px rgba(0,0,0,.2);transition:opacity .45s,transform .7s cubic-bezier(.3,1.3,.5,1)}
.hx-shot[data-s=on]{opacity:1;transform:translate(-50%,-50%) rotate(-1.5deg)}
.hx-shot[data-s=past]{transform:translate(-50%,-56%) rotate(-4deg) scale(.94)}
.hx-shot img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
.hx-shot figcaption{padding:10px 4px 12px;font:700 10.5px/1.3 Archivo,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}

/* hospitals: the AI patient talks back */
.hx-sc-hosp .as-photo{opacity:0;transition:opacity .5s,filter .5s}
.hx-sc-hosp .as-photo[data-s=on]{opacity:1}
.hx-sc-hosp .as-photo.hx-ra{object-position:50% 30%}
.hx-sc-hosp .as-photo.hx-ra[data-s=past]{opacity:1;filter:brightness(.35)}
.hx-chat{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(84%,440px);display:grid;gap:10px;opacity:0;transition:opacity .3s}
.hx-chat[data-s=on]{opacity:1}
.hx-chat div{max-width:78%;padding:12px 16px;font-size:15px;line-height:1.4;opacity:0;transform:translateY(10px)}
.hx-chat .q{justify-self:end;background:#fff;color:var(--ink)}
.hx-chat .a{justify-self:start;background:var(--red);color:#fff}
.hx-chat[data-s=on] div{animation:hx-rise .4s var(--ease) var(--d) forwards}
.hx-chat small{justify-self:center;margin-top:6px;font:700 10px/1 Archivo,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.6)}

/* out in the world: three photos dealt onto the table */
.hx-pols{position:relative;width:min(92%,620px);aspect-ratio:5/4}
.hx-pol{position:absolute;margin:0;width:48%;padding:10px 10px 0;background:#fff;box-shadow:0 18px 40px rgba(0,0,0,.2);opacity:0;transform:translateY(60px) rotate(0)}
.hx-pol:nth-child(1){left:0;top:4%}.hx-pol:nth-child(2){left:50%;top:0}.hx-pol:nth-child(3){left:26%;top:36%}
.hx-pol img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}
.hx-pol figcaption{padding:10px 4px 12px;font-size:12px;color:var(--dim)}
.hx-pol figcaption b{display:block;font-size:17px;font-weight:900;color:var(--ink);letter-spacing:-.02em}
.hx-pols[data-s=on] .hx-pol{animation:hx-deal .7s cubic-bezier(.3,1.3,.5,1) calc(var(--i) * .35s) forwards}
@keyframes hx-deal{to{opacity:1;transform:translateY(0) rotate(var(--r))}}

/* overview: the four films */
.ao.hx .ao-vis{background:#141414}
.hx-vids{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--ink);border-top:2px solid var(--ink)}
.hx-vid{position:relative;display:block;background:#000;aspect-ratio:16/10;overflow:hidden;color:#fff!important;text-decoration:none!important}
.hx-vid img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.72;transition:opacity .3s,transform .6s var(--ease)}
.hx-vid:hover img{opacity:.9;transform:scale(1.04)}
.hx-vid span{position:absolute;left:16px;right:16px;bottom:14px}
.hx-vid b{display:block;font-size:19px;font-weight:900;letter-spacing:-.02em}
.hx-vid small{display:block;margin-top:4px;font:700 10px/1.2 Archivo,sans-serif;letter-spacing:.12em;text-transform:uppercase;opacity:.85}
.hx-vid i{position:absolute;right:14px;top:12px;width:36px;height:36px;display:grid;place-items:center;background:var(--red);font-style:normal;font-size:13px}

@media (max-width:760px){
  .hx .as-stage[data-beat="1"] .hx-glove{transform:translateX(-95%)}
  .hx-pt em{font-size:9px;line-height:15px;left:11px;top:-7px}.hx-pt i{width:14px;height:14px;left:-7px;top:-7px}
  .hx-specs{right:4%}.hx-specs div{padding:9px 12px}.hx-specs b{font-size:20px}
  .hx-half b{font-size:26px}.hx-half{width:44%;padding:14px}.hx-half li{font-size:11.5px;padding:5px 0}
  .hx-core{width:80px;height:80px;font-size:18px}.hx-node{padding:8px 10px}.hx-node b{font-size:14px}.hx-track{font-size:10.5px;top:66%}
  .hx-browser{aspect-ratio:4/3.4}.hx-side{display:none}.hx-pane.docs{grid-template-columns:1fr}.hx-doc{padding:14px}.hx-doc b{font-size:18px}
  .hx-pane.dev{gap:8px;padding:10px}.hx-card{padding:10px}.hx-card b{font-size:15px}.hx-card span{font-size:11px}
  .hx-view{border-radius:18px;box-shadow:0 0 0 6px #1a1918}
  .hx-chat div{font-size:12.5px;padding:8px 11px}
  .hx-sand-h b{font-size:24px}.hx-sand-g{grid-template-columns:1fr 1fr}.hx-sb{padding:10px;min-height:0}.hx-sb b{font-size:14px}.hx-sb span{font-size:10.5px}
  .hx-vids{grid-template-columns:1fr 1fr}.hx-vid b{font-size:15px}
}

@media (prefers-reduced-motion:reduce){
  .as *{transition:none!important;animation:none!important}
  .as-lost span:last-child{opacity:1}
  .hx-sc-hub[data-s=on] .hx-node{opacity:1;transform:translate(-50%,-50%)}.hx-sc-hub[data-s=on] .hx-wires line{stroke-dashoffset:0}
  .hx-pane.dev[data-s=on] .hx-card,.hx-chat[data-s=on] div{opacity:1;transform:none}
  .hx-pols[data-s=on] .hx-pol{opacity:1;transform:rotate(var(--r))}
  .hx-view[data-s=on] img:first-of-type,.hx-view[data-s=on] .hx-cap:first-of-type{opacity:1}
  .hx-sand[data-s=on] .hx-sb{opacity:1;transform:none}
}