:root{
  --sheet:#F3F4F3;--grid:#E2E4E2;--frame:#121314;--rule:#C9CCCA;--ink:#121314;--muted:#4F5451;--faint:#A9AEAB;
  --accent:#E2431F;--accentText:#C8341A;--onInk:#F3F4F3;
  --sans:-apple-system,"SF Pro Display",system-ui,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="day"]){
    --sheet:#0F1112;--grid:#1D2022;--frame:#5B6260;--rule:#3A3F3D;--ink:#ECEDEC;--muted:#9BA19E;--faint:#5F6663;
    --accent:#FF5A33;--accentText:#FF6A45;--onInk:#0F1112;color-scheme:dark;
  }
}
:root[data-theme="night"]{
  --sheet:#0F1112;--grid:#1D2022;--frame:#5B6260;--rule:#3A3F3D;--ink:#ECEDEC;--muted:#9BA19E;--faint:#5F6663;
  --accent:#FF5A33;--accentText:#FF6A45;--onInk:#0F1112;color-scheme:dark;
}
.plate{color:var(--ink);
  --sheet:#0F1112;--grid:#1D2022;--frame:#5B6260;--rule:#3A3F3D;--ink:#ECEDEC;--muted:#9BA19E;--faint:#5F6663;
  --accent:#FF5A33;--accentText:#FF6A45;--onInk:#0F1112;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--sheet);color:var(--ink);font:17px/1.5 var(--sans);overflow-x:hidden}
a{color:var(--ink);text-underline-offset:3px}
.mono,.label{font:11px/1.4 var(--mono);letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.acc{color:var(--accentText)}
:focus-visible{outline:2px solid var(--accentText);outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--ink);color:var(--onInk);padding:6px 10px;z-index:9}

/* sheet */
.sheet{margin:16px;border:1px solid var(--frame);background-color:var(--sheet);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:24px 24px}
@media(min-width:900px){.sheet{max-width:1180px;margin:24px auto}}
@media(min-width:1260px){.sheet{margin:24px auto}}
.strip{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:10px 12px;border-bottom:1px solid var(--frame);background:var(--sheet)}
.cell{background:var(--sheet);border-top:1px solid var(--frame);padding:24px 16px;position:relative}
.cell.gridbg{background:transparent}
.hero{border-top:0}
.row{display:grid;grid-template-columns:1fr}
@media(min-width:860px){
  .row.two{grid-template-columns:1fr 1fr}
  .row.two>.cell+.cell{border-left:1px solid var(--frame)}
  .row.two.wide-l{grid-template-columns:1.1fr .9fr}
  .cell{padding:40px 32px}
}
.row.two>.cell+.cell{border-top:1px solid var(--frame)}
@media(min-width:860px){.row.two>.cell+.cell{border-top:1px solid var(--frame)}}
.ann{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* type */
h1{font-weight:200;font-size:clamp(40px,8.4vw,84px);line-height:1;letter-spacing:-.02em;margin:18px 0 20px;text-wrap:balance}
h2{font-weight:300;font-size:clamp(28px,4.6vw,44px);line-height:1.1;letter-spacing:-.02em;margin:10px 0 14px;text-wrap:balance}
p{margin:0 0 14px;max-width:56ch}
.sub{font-size:19px;color:var(--ink);max-width:48ch}
.big{font-weight:200;font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* buttons */
.cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 20px;border:1px solid var(--frame);background:var(--ink);color:var(--onInk);font:600 16px var(--sans);text-decoration:none;border-radius:0;cursor:pointer}
.btn.sec{background:var(--sheet);color:var(--ink)}
.btn:hover{outline:1px solid var(--ink);outline-offset:2px}
.btn svg{width:18px;height:18px;flex:none}
.chip{font:11px/1 var(--mono);letter-spacing:.04em;text-transform:uppercase;padding:9px 12px;border:1px solid var(--rule);background:var(--sheet);color:var(--muted);cursor:pointer;border-radius:0}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--onInk);border-color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tagline{margin-top:14px}

/* phones */
.phones{display:flex;gap:16px;justify-content:center;align-items:flex-start}
.phone{position:relative;margin:0;flex:1 1 0;max-width:270px}
.phone img{display:block;width:100%;height:auto;border:1px solid var(--frame);border-radius:2px;background:var(--sheet)}
.phone figcaption{margin-top:8px}
.dim{position:absolute;left:0;right:0;height:0;border-top:1px solid var(--accent);pointer-events:none}
.dim span{position:absolute;right:0;bottom:3px;background:var(--sheet);color:var(--accentText);padding:2px 5px;font:11px/1.2 var(--mono);letter-spacing:.04em;text-transform:uppercase;border:1px solid var(--accent)}
.dim::before,.dim::after{content:"";position:absolute;top:-4px;height:7px;border-left:1px solid var(--accent)}
.dim::before{left:0}.dim::after{right:0}
.wide-shot{display:block;width:100%;height:auto;border:1px solid var(--frame);border-radius:2px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.three .phone{max-width:none}

/* facts list */
.facts{list-style:none;margin:18px 0 0;padding:0;border-top:1px solid var(--rule)}
.facts li{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--rule);font-size:16px}

/* timeline */
.tl{list-style:none;margin:28px 0 8px;padding:0;display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--frame)}
.tl li{position:relative;padding:18px 0 0 0}
.tl li::before{content:"";position:absolute;left:0;top:0;height:12px;border-left:1px solid var(--ink)}
.tl li:first-child::before{height:18px;border-left:3px solid var(--accent)}
.tl .t{font:300 clamp(15px,3.4vw,28px)/1 var(--sans);font-variant-numeric:tabular-nums;letter-spacing:-.02em;display:block;margin-left:6px}
.tl .m{display:block;margin:8px 0 0 6px}

/* rin */
.rin{display:inline-block;margin:0;text-align:left;font:15px/1.15 var(--mono);color:var(--ink);white-space:pre;position:relative;padding-top:2.4em;cursor:default}
.rin-body{display:block;transform-origin:50% 100%}
.rin .sym{display:block;min-height:1.15em;color:var(--accent);font-weight:700;transition:opacity .35s,transform .35s}
.rin .bells{display:flex}
.rin .bl,.rin .br{display:inline-block;vertical-align:top;white-space:pre}
.rin .eyes,.rin .mouth{display:block;transition:transform .12s}
.rin .eyes.sq{transform:scaleY(.1)}
.rin .acc{color:var(--accent)}
.rin .rz{position:absolute;color:var(--accent);font-weight:700;left:15ch;top:1.2em;opacity:0;animation:rz 3.4s ease-out infinite}
@keyframes rz{0%{transform:translate(0,0);opacity:0}10%{opacity:1}70%{opacity:1}100%{transform:translate(4ch,-4.2em);opacity:0}}
.rin.ringing .rin-body{animation:shake .45s ease-in-out infinite alternate}
.rin.ringing .bl,.rin.ringing .br{animation:lift .28s ease-in-out infinite alternate}
.rin.ringing .br{animation-delay:.14s}
@keyframes shake{from{transform:rotate(-4deg)}to{transform:rotate(4deg)}}
@keyframes lift{from{transform:translateY(0)}to{transform:translateY(-.5em)}}
.rin.big{font-size:clamp(11px,3.3vw,22px)}
.rinbox{display:flex;flex-direction:column;align-items:center;gap:16px;padding:8px 0}
button.rinbtn{background:none;border:0;padding:0;color:inherit;cursor:pointer}
.mood-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0;border:1px solid var(--rule);margin-top:20px}
.mood-grid>div{padding:14px 12px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);margin:0 -1px -1px 0;background:var(--sheet)}
.mood-grid .rin{font-size:10.5px}

/* specs */
.specs{display:grid;grid-template-columns:1fr;border:1px solid var(--frame);background:var(--sheet);margin-top:20px}
.specs>div{padding:14px 14px 16px;border-bottom:1px solid var(--rule)}
.specs>div:last-child{border-bottom:0}
.specs p{margin:6px 0 0;font-size:15px;max-width:none}
@media(min-width:620px){.specs{grid-template-columns:1fr 1fr}.specs>div{border-right:1px solid var(--rule)}.specs>div:nth-child(2n){border-right:0}.specs>div:nth-last-child(-n+2){border-bottom:0}}
@media(min-width:960px){.specs{grid-template-columns:repeat(4,1fr)}.specs>div{border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}.specs>div:nth-child(2n){border-right:1px solid var(--rule)}.specs>div:nth-child(4n){border-right:0}.specs>div:nth-last-child(-n+4){border-bottom:0}.specs>div:nth-last-child(-n+2){border-bottom:0}}

footer.strip{border-top:1px solid var(--frame);border-bottom:0}
footer a{color:var(--muted)}

/* specimen (B) */
.spec{background:var(--sheet);color:var(--ink)}
.spec .head{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;border-bottom:1px solid var(--frame)}
.spec .stage{display:flex;flex-direction:column;align-items:center;padding:10px 12px 0;border-bottom:1px solid var(--frame);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px;position:relative}
.spec .stage .ann{width:100%;padding:10px 0 4px}
.spec .prompt{padding:16px 12px;font-size:clamp(20px,3.2vw,26px);font-weight:500;line-height:1.2;text-wrap:balance;border-bottom:1px solid var(--frame)}
.answers{display:grid;grid-template-columns:1fr 1fr}
.answers button{min-height:84px;text-align:left;padding:10px 12px;background:var(--sheet);color:var(--ink);border:0;border-right:1px solid var(--frame);border-bottom:1px solid var(--frame);display:flex;flex-direction:column;justify-content:space-between;font:500 19px var(--sans);cursor:pointer;border-radius:0;position:relative}
.answers button:nth-child(2n){border-right:0}
.answers button .mono{font-size:11px}
.answers button:hover{background:var(--grid)}
.answers button.right{background:var(--ink);color:var(--onInk)}
.answers button.right .mono{color:var(--onInk)}
.answers button.wrong::after{content:"";position:absolute;inset:0;border:2px solid var(--accent);pointer-events:none}
.answers button[aria-disabled="true"]{cursor:default;opacity:.55}
.spec .foot{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:0 0 0 12px;min-height:52px}
.spec .foot button{min-height:52px;padding:0 16px;border:0;border-left:1px solid var(--frame);background:var(--sheet);color:var(--ink);font:600 15px var(--sans);cursor:pointer;border-radius:0}
.spec .foot button:hover{background:var(--grid)}
.bar{height:4px;background:var(--rule);position:relative;margin:6px 0 0;width:100%}
.bar i{position:absolute;left:0;top:0;bottom:0;background:var(--accent);width:0}
.bar.run i{animation:fill 3s linear forwards}
@keyframes fill{to{width:100%}}
.awake{padding:20px 12px;border-bottom:1px solid var(--frame)}
.awake .big{font-size:clamp(48px,9vw,72px);line-height:1;display:block;margin-top:6px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[hidden]{display:none!important}

@media(prefers-reduced-motion:reduce){
  .rin .rz,.rin.ringing .rin-body,.rin.ringing .bl,.rin.ringing .br{animation:none!important}
  .bar.run i{animation:none;width:100%}
  *{transition-duration:0s!important}
}