/* Pooled landing: one headline and one line over a quiet swarm, one demo in two modes (Chat, Code),
   one closing line over a swarm that gathers into the logo. */
:root{
  /* colors, type, radius and motion come from tokens.css; these are the landing's own layout values */
  --gutter:clamp(16px,4vw,48px);
  --shadow:0 1px 2px rgba(20,22,29,.04),0 12px 28px -14px rgba(20,22,29,.12),0 44px 90px -48px rgba(20,22,29,.26);
  --body-h:clamp(300px,calc(100svh - 420px),580px);--band:122px;--fold:46px;--pvw:460px;
  color-scheme:light;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px;background:var(--bg)}
body{background:var(--bg);color:var(--ink);font:400 16px/1.55 var(--sans);letter-spacing:-.006em;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
svg{display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}
ol,ul{list-style:none}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.wrap{max-width:1240px;margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:12px;top:-60px;z-index:60;background:var(--white);padding:8px 12px;border-radius:var(--r-sm)}
.skip:focus{top:12px}

/* ---------- brand + buttons ---------- */
.mark{flex:none;fill:currentColor}
.brand{display:inline-flex;align-items:center;gap:9px;text-decoration:none;font:500 var(--t-xl)/1 var(--sans);letter-spacing:-.02em;white-space:nowrap}
.brand.small{font-size:var(--t-base);gap:7px;color:var(--ink)}
.brand .wm{font-weight:500;letter-spacing:-.035em;transform:translateY(-.5px)}
.btn{display:inline-flex;align-items:center;gap:9px;font:500 15px/1 var(--sans);text-decoration:none;padding:13px 20px;border-radius:var(--r-sm);transition:background-color .16s var(--ease),box-shadow .16s var(--ease),transform .16s var(--ease)}
.btn:active{transform:scale(.98)}
.btn-sm{padding:10px 14px;font-size:var(--t-base);border-radius:var(--r-sm)}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 6px 16px -8px rgba(42,69,224,.7)}
.btn-blue:hover{background:var(--blue-600)}
.btn-line{background:var(--white);color:var(--ink);box-shadow:inset 0 0 0 1px var(--rule-3)}
.btn-line:hover{background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--ink-3)}
.btn-line svg{color:var(--ink-2)}
/* ---------- Star button (the closing section, next to Start a room) ----------
   A secondary .btn.btn-sm: white, 1px --rule-3 outline, the GitHub mark in ink, a gold star glyph (the only
   gold), "Star", then the live count after a hairline, all in ink. 36px tall, like the Start a room button next
   to it. Phones: marks + count only (the word shows when there is no count). stars.js fills .st-n. */
.btn-star{gap:6px;height:36px;padding:0 12px;background:var(--white);color:var(--ink);box-shadow:inset 0 0 0 1px var(--rule-3)}
.btn-star:hover{background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--ink-3)}
.btn-star .gh{flex:none;color:var(--ink)}
.btn-star .star{flex:none;fill:#E3B341;margin-left:1px}
.btn-star .st-n{margin-left:3px;padding-left:9px;border-left:1px solid var(--rule-3);line-height:18px;font-variant-numeric:tabular-nums}
@media (max-width:640px){
  .btn-star{padding:0 10px;gap:5px}
  .btn-star .st-n{margin-left:1px;padding-left:7px}
  .btn-star.has-n .st-l{display:none}
  .btn-star.has-n .st-n{margin-left:0;padding-left:0;border-left:0}
}
/* ---------- end Star button ---------- */
.ctas .btn-star{height:auto;align-self:stretch}
.btn svg{transition:transform .16s var(--ease)}
.btn-blue:hover svg{transform:translateX(2px)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(246,245,241,.82);-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px)}
.nav-in{display:flex;align-items:center;height:64px;gap:20px}
.nav .right{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav .btn-sm{height:36px;padding-top:0;padding-bottom:0}

/* header GitHub link: the mark only */
.gh-link{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:8px;color:var(--ink-2)}
.gh-link:hover{color:var(--ink);background:var(--bg-2)}

/* ---------- hero, over the swarm ---------- */
.hero{position:relative;padding:clamp(20px,3.5vh,40px) 0 clamp(18px,2.5vh,28px);text-align:center;overflow:hidden}
.swarm{position:absolute;inset:0;width:100%;height:100%;display:block;pointer-events:none}
.hero .swarm{-webkit-mask-image:radial-gradient(ellipse 62% 80% at 50% 50%,#000 30%,transparent 100%);mask-image:radial-gradient(ellipse 62% 80% at 50% 50%,#000 30%,transparent 100%)}
.hero-in{position:relative}
@keyframes beat{0%,100%{box-shadow:0 0 0 3px var(--blue-soft)}50%{box-shadow:0 0 0 5px rgba(234,237,254,.4)}}
.hero h1{max-width:14em;margin:0 auto;font:400 clamp(38px,min(4.2vw,7.2vh),60px)/1.04 var(--display);letter-spacing:-.035em;text-wrap:balance;text-shadow:0 0 24px var(--bg),0 0 6px var(--bg)}
.hero h1 span{color:var(--blue)}
.hero .sub{max-width:38em;margin:16px auto 0;font:400 clamp(17px,1.3vw,18px)/1.55 var(--sans);color:var(--ink-2);text-wrap:pretty;text-shadow:0 0 14px var(--bg),0 0 4px var(--bg)}
.js .hero-in>*{animation:rise .9s var(--ease) both}
.js .hero-in>:nth-child(2){animation-delay:.08s}
@keyframes rise{from{opacity:0;transform:translateY(10px)}}

/* ---------- the demo ---------- */
.stage{padding:0}
.demo{position:relative;max-width:1160px;margin:0 auto}
.pending{display:none!important}
.live{flex:none;width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.enter{animation:enter .45s var(--ease)}
@keyframes enter{from{opacity:0;transform:translateY(6px)}}

/* Chat | Code, above the window */
.modes{position:relative;display:flex;width:max-content;margin:0 auto 14px;padding:3px;border-radius:var(--r-md);background:var(--bg-3);box-shadow:inset 0 0 0 1px var(--rule-2)}
.modes button{position:relative;z-index:1;width:84px;height:32px;border-radius:var(--r-sm);font-size:var(--t-base);font-weight:500;color:var(--ink-3);transition:color .35s var(--ease)}
.modes button[aria-selected="true"]{color:var(--ink)}
.modes button:hover{color:var(--ink)}
.modes .pill{position:absolute;top:3px;left:3px;width:84px;height:32px;border-radius:var(--r-sm);background:var(--white);box-shadow:0 1px 2px rgba(20,22,29,.08),0 0 0 1px rgba(20,22,29,.04);transition:transform .55s var(--glide),background-color .3s ease,box-shadow .3s ease}
.demo[data-mode="code"] .modes .pill{transform:translateX(84px);background:#0B0D14;box-shadow:0 1px 2px rgba(0,0,0,.25),0 0 16px -3px rgba(110,134,255,.6)}
.demo[data-mode="code"] .modes #mCode{color:#fff}   /* Code selected: black pill, white word, stars twinkling inside (sparkle.js) */
.modes.press .pill{transform:scale(.96)}
.modes button.press{color:var(--ink);background:rgba(255,255,255,.7);transform:scale(.94);transition:color .1s,transform .14s var(--ease)}
.demo[data-mode="code"] .modes.press .pill{transform:translateX(84px) scale(.96)}

.win{position:relative;background:var(--white);border:1px solid var(--rule);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.hd{display:flex;align-items:center;gap:12px;height:56px;padding:0 12px 0 16px;background:var(--bg-2);border-bottom:1px solid var(--rule-2)}
.hd-room{display:inline-flex;align-items:center;gap:8px;flex:none;font-size:var(--t-md);color:var(--ink-3);white-space:nowrap}
.hd-room .mark{color:var(--ink);margin-right:8px}
.hd-k{display:inline-flex;align-items:center;height:32px;padding-left:16px;border-left:1px solid var(--rule-2)}
.hd-code{display:inline-flex;margin-right:10px;font:500 var(--t-md)/1 var(--mono);color:var(--ink);letter-spacing:.14em}
.hd-code span{display:inline-block;transition:opacity .3s,transform .3s var(--ease)}
.hd-code span.off{opacity:.25;transform:translateY(2px)}
.chips{flex:1;min-width:0;display:flex;gap:6px;overflow:hidden}
.chip{flex:none;display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 10px;border:1px solid var(--chip-bd,var(--rule));border-radius:var(--r-sm);background:var(--white);font-size:var(--t-sm);color:var(--ink);white-space:nowrap;transition:border-color .2s,box-shadow .2s}
.chip::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--sw)}
.chip svg{color:var(--ink-2)}
.chip .cg{font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3)}
.chip.c0{--chip-bd:var(--blue-200)}
.chip .cg:empty{display:none}
/* downloading: a chip shows its device's percent instead of its GB, as in the room (.pchip .cst) */
.chip .cst{display:none;font:500 var(--t-xs)/1 var(--mono);color:var(--blue-text)}
.demo[data-scene="split"] .chip .cst:not(:empty){display:inline}
.demo[data-scene="split"] .chip:has(.cst:not(:empty)) .cg{display:none}
.chip.out{display:none}
.chip.in{animation:chipin .5s var(--ease)}
/* joined: the room's presence toast (p2p.html .toast.presence), a white rounded card with the device's dot */
.toasts{position:absolute;right:16px;bottom:16px;z-index:6;display:flex;flex-direction:column;align-items:flex-end;gap:8px;pointer-events:none}
.toast{display:none;align-items:center;gap:9px;padding:11px 16px 11px 14px;border-radius:12px;background:var(--white);color:var(--ink);font:400 var(--t-md)/1.3 var(--sans);white-space:nowrap;box-shadow:0 0 0 1px var(--rule),0 10px 30px -12px rgba(20,22,29,.25)}
.toast::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--sw);box-shadow:0 0 0 3px color-mix(in srgb,var(--sw) 22%,transparent)}
.toast [data-name]{text-transform:lowercase}
.toast.on{display:flex;animation:toastin .45s var(--ease) both}
.toast.out{display:flex;animation:toastout .4s ease-in both}
@keyframes toastdown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
@keyframes toastup{to{opacity:0;transform:translateY(-6px)}}
@keyframes toastin{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes toastout{to{opacity:0;transform:translateY(4px)}}
html:not(.js) .toasts{display:none}
@keyframes chipin{from{opacity:0;transform:translateX(-6px) scale(.96)}}
.chip.tok{border-color:var(--sw);box-shadow:0 0 0 3px var(--blue-soft)}
.hd-sum{flex:none;margin-left:auto;font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3);white-space:nowrap}
.hd-sum b{display:inline-block;font-weight:500;color:var(--ink)}
.hd-sum.none{visibility:hidden}
.hd-sum.bump b{animation:enter .45s var(--ease)}
/* the room's Invite and its black "this device" button (p2p.html #share-btn, #compute-open) */
.hd-inv,.hd-me{flex:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:34px;border-radius:var(--r-sm);font:500 var(--t-md)/1 var(--sans);white-space:nowrap}
.hd-inv{padding:0 12px;background:var(--blue);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 6px 16px -8px rgba(42,69,224,.7)}
.hd-me{width:34px;background:var(--ink);color:#fff}
.hd-me .hm{display:block;fill:currentColor;overflow:visible}
.hd-me .hm circle{transform-box:fill-box;transform-origin:center}
.hd-me .hm .lit{fill:var(--blue-400)}
.demo:is([data-scene="chat"],[data-scene="code"]) .hd-me .hm circle{animation:mkbeat 2.4s var(--ease) infinite;animation-delay:calc(var(--rc) * .16s)}
@keyframes mkbeat{0%,100%{opacity:1;transform:none}40%{opacity:.5;transform:scale(.82)}}

.body{position:relative;height:var(--body-h);background:var(--bg);overflow:hidden}
.js .scene{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility 0s .45s}
/* the incoming scene waits for the outgoing one to finish, so two scenes never show at once */
.js .demo[data-scene="tabs"] .s-tabs,.js .demo[data-scene="chat"] .s-chat,.js .demo[data-scene="code"] .s-code{opacity:1;visibility:visible;transition:opacity .45s var(--ease) .45s,visibility 0s}

/* ---------- 1, 2: two devices, two tabs ---------- */
.s-tabs{display:grid;grid-template-columns:1fr 1fr;gap:22px;padding:20px 22px 24px}
.tab{display:flex;flex-direction:column;min-width:0;min-height:0;transition:transform .8s var(--glide),opacity .5s var(--ease) .2s}
/* the desktop waits, dimmed, until it is its turn */
.js .tab.idle{opacity:.4;transition:opacity .4s var(--ease)}
.tab-dev{flex:none;display:flex;align-items:center;gap:7px;height:28px;padding-left:2px;font-size:var(--t-md);font-weight:500;color:var(--ink-2)}
.tabwin{flex:1;min-height:0;display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--rule);border-radius:var(--r-md);overflow:hidden;box-shadow:0 1px 2px rgba(20,22,29,.04),0 10px 24px -16px rgba(20,22,29,.16)}
.tab-bar,.pv-bar{flex:none;display:flex;align-items:center;justify-content:center;height:34px;padding:0 10px;background:var(--bg-3);border-bottom:1px solid var(--rule-2)}
.url,.pv-addr{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 11px;border-radius:var(--r-sm);background:var(--white);font:400 var(--t-xs)/1 var(--mono);color:var(--ink-2)}
.url svg,.pv-addr svg{color:var(--ink-3)}
.tab-body{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:18px}
.mcard{width:100%;max-width:320px;background:var(--white);border:1px solid var(--rule);border-radius:var(--r-lg);box-shadow:0 1px 2px rgba(20,22,29,.04),0 12px 32px -18px rgba(20,22,29,.2);overflow:hidden}
.mpre,.mpost,.mjoin{display:flex;flex-direction:column;padding:20px 18px 18px}
.mcard h3{font:400 var(--d-sm)/1.1 var(--display);letter-spacing:-.02em}
.mpre>p:not(.nm-k){margin:6px 0 16px;font-size:var(--t-base);color:var(--ink-2)}
.nm-k{margin:0 0 6px;font-size:var(--t-sm);color:var(--ink-3)}
.mjoin .nm-k{margin-top:14px}
.devname{display:flex;align-items:center;gap:8px;height:38px;margin-bottom:14px;padding:0 6px 0 12px;border-radius:var(--r-sm);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--rule);font-size:var(--t-base);font-weight:500;color:var(--ink);transition:box-shadow .25s,background .25s}
.devname svg{margin-left:auto;color:var(--ink-3)}
.devname .shuf{display:grid;place-items:center;flex:none;width:28px;height:28px;margin-left:auto;border-radius:var(--r-sm);color:var(--ink-3)}
.devname .shuf svg{margin:0}
.nm-v{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.devname.fresh{background:var(--white);box-shadow:inset 0 0 0 1px var(--blue),0 0 0 3px var(--blue-soft)}
.devname.fresh::after{content:"";width:1.5px;height:16px;margin-left:-6px;background:var(--ink);animation:blink .9s steps(1) infinite}
.devname.fresh svg{order:2}
.mbtn{display:flex;align-items:center;justify-content:center;height:40px;border-radius:var(--r-sm);font-size:var(--t-base);font-weight:500;color:var(--ink);background:var(--white);box-shadow:inset 0 0 0 1px var(--rule-3);transition:background .25s,color .25s,transform .14s var(--ease),box-shadow .25s}
.mbtn.blue,.mbtn.ready{background:var(--blue);color:#fff;box-shadow:none}
.press{transform:scale(.96)}
.mbtn.press{background:var(--blue-700);color:#fff}
.mpost{display:none}
#tabA.done .mpre{display:none}
#tabA.done .mpost{display:flex;animation:enter .35s var(--ease)}
.mk{font-size:var(--t-sm);color:var(--ink-3)}
.mcode{display:flex;gap:6px;margin-top:4px;font:500 38px/1.15 var(--mono);color:var(--blue-text)}
.mcode span{display:inline-block;transition:opacity .3s var(--ease),transform .4s var(--ease)}
.mcode span.off{opacity:0;transform:translateY(6px)}
.mwait,.mjoined{display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:14px;border-top:1px solid var(--rule-2);font-size:var(--t-md);color:var(--ink-2)}
.mwait .live{width:6px;height:6px}
.js .mwait .live{animation:beat 1.6s var(--ease) infinite}
.mjoined{display:none;color:var(--blue-text);font-weight:500}
#tabA.met .mwait{display:none}
#tabA.met .mjoined{display:flex;animation:enter .35s var(--ease)}
.slots{display:flex;gap:8px;margin:0 0 14px}
.slots i{display:grid;place-items:center;width:44px;height:50px;border-radius:var(--r-sm);border:1px solid var(--rule);background:var(--bg-2);font:500 22px/1 var(--mono);font-style:normal;color:var(--ink);transition:border-color .15s,box-shadow .15s,background .15s}
.slots i.cur{border-color:var(--blue);background:var(--white);box-shadow:0 0 0 3px var(--blue-soft)}
.slots i.lit{animation:pop .25s var(--ease)}
@keyframes pop{from{transform:scale(.9)}}
.mok{display:none;align-items:center;justify-content:center;gap:7px;height:40px;border-radius:var(--r-sm);background:var(--blue-soft);color:var(--blue-text);font-size:var(--t-base);font-weight:500}
#tabB.done .mbtn{display:none}
#tabB.done .mok{display:flex;animation:enter .35s var(--ease)}
/* the merge: both tabs glide to the middle and fold into one room */
.js .demo.merge #tabA{transform:translateX(calc(50% + 11px)) scale(.94);opacity:0}
.js .demo.merge #tabB{transform:translateX(calc(-50% - 11px)) scale(.94);opacity:0}

/* ---------- 3, 4: the room's model card (as in the room: p2p.html #ai-panel) ---------- */
.model{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:center;
  transition:opacity .5s var(--ease),visibility 0s .5s,background-color .6s,border-color .6s;border-bottom:1px solid transparent}
.js .model{opacity:0;visibility:hidden}
.js .demo:is([data-scene="pool"],[data-scene="split"],[data-scene="chat"],[data-scene="code"]) .model{opacity:1;visibility:visible;transition:opacity .5s var(--ease) .2s,visibility 0s,background-color .6s,border-color .6s}
.card{position:absolute;left:50%;top:50%;display:flex;width:min(820px,calc(100% - 48px));background:var(--white);border:1px solid var(--rule);border-radius:16px;overflow:hidden;
  box-shadow:0 1px 2px rgba(20,22,29,.04),0 12px 24px -12px rgba(20,22,29,.10),0 40px 80px -40px rgba(20,22,29,.22);transform:translate(-50%,-50%);transition:opacity .35s var(--ease),transform .45s var(--ease),visibility 0s}
.js .model.dl .card{opacity:0;visibility:hidden;transform:translate(-50%,-50%) scale(.97);transition:opacity .3s var(--ease),transform .4s var(--ease),visibility 0s .4s}
html:not(.js) .card{display:none}
.cd-pick{flex:1.15 1 0;min-width:0;display:flex;flex-direction:column;padding:22px 22px 20px}
.cd-pool{flex:1 1 0;min-width:0;display:flex;flex-direction:column;background:var(--bg-2);border-left:1px solid var(--rule-2)}
.cd-h{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.cd-h b{font:400 var(--d-md)/1.1 var(--display);letter-spacing:-.025em}
.cd-h span{font-size:var(--t-md);color:var(--ink-3)}
.rungs{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.rungs li{display:grid;grid-template-columns:16px minmax(0,1fr) auto;align-items:center;gap:10px;height:52px;padding:0 14px 0 12px;border:1px solid var(--rule-2);border-radius:var(--r-md);background:var(--white);font-size:var(--t-base);color:var(--ink-3);transition:background .2s,border-color .2s,box-shadow .2s,opacity .3s,color .3s}
.rungs li::before{content:"";width:14px;height:14px;border-radius:50%;box-shadow:inset 0 0 0 1.5px var(--rule-3);background:var(--white);transition:box-shadow .15s}
.rungs li.ok{color:var(--ink)}
.rungs li:not(.ok):not(.sel){opacity:.6}
.rungs li.hov{background:var(--bg-2);border-color:var(--rule-3)}
.rungs li.sel{border-color:var(--blue);background:var(--blue-soft);box-shadow:0 0 0 3px color-mix(in srgb,var(--blue-soft) 60%,transparent);color:var(--ink)}
.rungs li.sel::before{box-shadow:inset 0 0 0 4.5px var(--blue)}
.rn{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fig{display:inline-flex;align-items:center;gap:8px;justify-self:end;white-space:nowrap}
.fig .nd{font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3)}
.fig b{font:500 var(--t-xs)/1 var(--mono);color:var(--blue-text);padding:4px 6px;border-radius:var(--r-xs);background:var(--blue-soft)}
.fig .more{font:400 var(--t-xs)/1 var(--mono);color:var(--ink-2);padding:4px 6px;border-radius:var(--r-xs);background:var(--bg-3);box-shadow:inset 0 0 0 1px var(--rule-2)}
.fig .more:empty{display:none}
.rungs li.ok .more,.rungs li:not(.ok) .fig b,.rungs li:not(.ok) .nd{display:none}
.rungs li.unlock{animation:unlock .7s var(--ease)}
@keyframes unlock{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--blue) 35%,transparent)}100%{box-shadow:0 0 0 10px transparent}}
.cd-pick .mbtn{height:44px;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 6px 16px -8px rgba(42,69,224,.7);transition:background .25s,opacity .3s,box-shadow .25s,transform .14s var(--ease)}
.cd-pick .mbtn.off{background:var(--bg-3);color:var(--ink-4);box-shadow:none}
.cd-pick .mbtn.hover{background:var(--blue-600);box-shadow:0 0 0 4px var(--blue-soft)}
.cd-sec{padding:18px 20px}
.cd-sec+.cd-sec{border-top:1px solid var(--rule-2)}
.ap-k{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-size:var(--t-md);color:var(--ink-3)}
.ap-k b{font:500 var(--d-sm)/1 var(--mono);letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums}
.ap-k b.bump{display:inline-block;animation:enter .45s var(--ease)}
/* the pool: one segment per device, a tick where each model starts to fit */
.meter{position:relative;height:10px;margin:14px 0 10px;border-radius:5px;background:var(--bg-3);box-shadow:inset 0 0 0 1px var(--rule-2)}
.mt-fill{position:absolute;inset:0;display:flex;gap:2px;border-radius:5px;overflow:hidden}
.mt-fill i{flex:none;height:100%;background:var(--sw);transition:width .6s var(--ease)}
.mt-ticks span{position:absolute;top:-3px;bottom:-3px;width:2px;margin-left:-1px;border-radius:1px;background:var(--rule-3);transition:background-color .3s}
.mt-ticks span.ok{background:var(--ink)}
.mt-ticks span b{position:absolute;top:calc(100% + 5px);right:-2px;font:400 var(--t-xs)/1 var(--mono);color:var(--ink-3);white-space:nowrap;transition:color .3s}
.mt-ticks span.ok b{color:var(--ink-2)}
.mt-ticks span.sel{width:3px;margin-left:-1.5px;background:var(--blue)}
.mt-ticks span.sel b{color:var(--blue-text);font-weight:500}
/* under the meter, as in the room (#ap-need): the model's need, and whether it fits */
.need{display:flex;align-items:baseline;gap:6px;margin:0 0 14px;font-size:var(--t-sm);color:var(--ink-3);white-space:nowrap}
.need b{font:500 var(--t-sm)/1 var(--mono);color:var(--ink)}
.need>span:last-child{margin-left:auto;font:400 var(--t-sm)/1 var(--mono);color:var(--ink-2)}
.need.ok>span:last-child{color:var(--blue-text)}
.cd-note{margin-top:auto;padding:0 2px 10px;font-size:var(--t-sm);line-height:1.5;color:var(--ink-3)}
.devs{display:flex;flex-direction:column;gap:6px}
.devs li{display:flex;align-items:center;gap:8px;min-width:0;height:19px;font-size:var(--t-md);color:var(--ink)}
.devs li>i{flex:none;width:8px;height:8px;border-radius:50%;background:var(--sw)}
.devs li svg{flex:none;color:var(--ink-3)}
.devs li>span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.devs small{font-size:var(--t-sm);color:var(--ink-3)}
.devs b{font:400 var(--t-sm)/1 var(--mono);color:var(--ink-2);font-variant-numeric:tabular-nums}
.devs b:empty::after{content:"-";color:var(--rule-3)}
.devs b.join{font:500 var(--t-sm)/1 var(--sans);color:var(--blue-text)}
.devs b.bump{animation:enter .4s var(--ease)}
.devs li.out{display:none}
.devs li.in{animation:devin .5s var(--ease)}
@keyframes devin{from{opacity:0;transform:translateY(-4px)}}
.cd-me{display:flex;align-items:center;justify-content:space-between;gap:12px}
.ap-step{display:inline-flex;align-items:center;gap:4px;padding:3px;border:1px solid var(--rule-3);border-radius:var(--r-md);background:var(--white)}
.ap-step .step{display:grid;place-items:center;width:34px;height:34px;border-radius:var(--r-sm);font:400 17px/1 var(--sans);color:var(--ink-2);transition:background .15s,transform .14s var(--ease)}
.ap-step .step.press{background:var(--bg-3);color:var(--ink)}
.ap-step b{min-width:36px;text-align:right;font:500 17px/1 var(--mono);color:var(--ink);font-variant-numeric:tabular-nums}
.ap-step .u{margin-right:4px;font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3)}

/* ---------- 4, 5: the layers, one row per device (as in the room's band: p2p.html #swarm-map) ---------- */
.band{position:relative;display:flex;flex-direction:column;padding:0 56px;transition:opacity .5s var(--ease) .1s,transform .7s var(--glide),padding .9s var(--glide)}
.js .model:not(.dl) .band{opacity:0;transform:translateY(8px);pointer-events:none}
/* downloading: the room's load card (p2p.html #load-card) stands in for the band until the chat opens */
/* while downloading, the band waits unseen at the top at its chat size, so the chat can fade it in where it stays */
.demo[data-scene="split"] .model{justify-content:flex-start}
.js .demo[data-scene="split"] .band{opacity:0;transform:none;pointer-events:none;transition:none}
.ldc{position:absolute;left:50%;top:calc(var(--body-h) / 2);width:min(560px,calc(100% - 32px));padding:24px 24px 20px;background:var(--white);border:1px solid var(--rule);border-radius:16px;
  box-shadow:0 1px 2px rgba(20,22,29,.04),0 12px 24px -12px rgba(20,22,29,.10),0 40px 80px -40px rgba(20,22,29,.22);transform:translate(-50%,-50%);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility 0s .3s}
.js .demo[data-scene="split"] .ldc{opacity:1;visibility:visible;transition:opacity .35s var(--ease) .15s,visibility 0s}
.js .demo[data-scene="split"] .model.dl .ldc{animation:ldcin .45s var(--ease) .15s backwards}
@keyframes ldcin{from{opacity:0;transform:translate(-50%,calc(-50% + 8px))}}
.demo[data-scene="chat"] .ldc{transform:translate(-50%,-50%)}
html:not(.js) .ldc{display:none}
.lc-head{display:flex;align-items:center;gap:16px}
.lc-head .dl{flex:none;width:40px;height:40px}
.dl{display:block;overflow:visible}
.dl circle{fill:var(--ink);transform-box:fill-box;transform-origin:center;animation:dlwave 1.9s var(--ease) infinite;animation-delay:calc(var(--rc) * .14s)}
.dl circle:last-child{fill:var(--blue)}
@keyframes dlwave{0%,100%{opacity:.22;transform:scale(.72)}38%{opacity:1;transform:none}70%{opacity:.9;transform:none}}
.lc-h{flex:1;min-width:0}
.lc-t{font:400 22px/1.15 var(--display);letter-spacing:-.02em;color:var(--ink)}
.lc-note{margin-top:5px;font-size:var(--t-md);line-height:1.55;color:var(--ink-3)}
.lc-rows{margin:20px 0 16px;border-top:1px solid var(--rule-2)}
.lc-row{display:grid;grid-template-columns:8px minmax(0,170px) minmax(0,1fr) 64px;align-items:center;gap:12px;min-height:52px;padding:6px 0;border-bottom:1px solid var(--rule-2);font-size:var(--t-base)}
.lc-row .sw{width:8px;height:8px;border-radius:50%;background:var(--sw)}
.lc-row .n{display:flex;flex-direction:column;gap:3px;min-width:0;color:var(--ink)}
.lc-row .n .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-transform:lowercase;letter-spacing:.005em}
.lc-row .n .lr{font:400 11.5px/1.2 var(--mono);color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lc-row.done .n .lr{color:var(--blue-text)}
.lc-row .n small{color:var(--ink-3);font-size:var(--t-sm)}
.lc-row .bar{height:6px;background:var(--bg-3);border-radius:3px;overflow:hidden}
.lc-row .fill{height:100%;width:0%;background:var(--sw);border-radius:3px;transition:width .6s var(--ease)}
.lc-row .pct{text-align:right;color:var(--ink-3);font:400 var(--t-sm)/1 var(--mono);white-space:nowrap}
.lc-row.done .pct{color:var(--blue-text)}
.lc-strip{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:2px;height:22px}
.lc-strip i{border-radius:2px;background:var(--bg-3);transition:background-color .3s}
.lc-strip i.f{background:var(--sw)}
.lc-status{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin-top:16px;font-size:var(--t-md);line-height:1.55;color:var(--ink-2);min-height:20px}
.lc-status .src{display:inline-flex;align-items:center;gap:7px;padding:6px 10px 6px 8px;border-radius:var(--r-pill);background:var(--blue-soft);color:var(--blue-text);font:500 var(--t-sm)/1 var(--mono)}
.lc-status .src::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;animation:ldblink 1.6s infinite}
@keyframes ldblink{0%,100%{opacity:1}50%{opacity:.25}}
.lc-status .src.gpu{background:var(--bg-3);color:var(--ink-2)}
.lc-status .b{font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3);font-variant-numeric:tabular-nums}
.lc-status .eta{margin-left:auto;color:var(--ink);font-weight:500}
.lc-status .eta.wait{color:var(--ink-3);font-weight:400}
@media (max-width:640px){
  .ldc{width:calc(100% - 20px);padding:16px}
  .lc-row{grid-template-columns:8px minmax(0,150px) minmax(0,1fr) 52px;gap:8px;font-size:var(--t-md)}
  .lc-head{gap:12px 14px}
  .lc-head .dl{width:34px;height:34px}
  .lc-row .lw{display:none}
  .lc-t{font-size:20px}
  .lc-rows{margin:14px 0 12px}
  .lc-row{height:40px}
  .lc-strip{height:18px}
  .lc-status{margin-top:12px}
}
/* a short phone: the download card in fewer lines */
@media (max-width:640px) and (max-height:820px){
  .ldc{padding:14px 14px 12px}
  .lc-head .dl{width:28px;height:28px}
  .lc-t{font-size:18px}
  .lc-note{font-size:var(--t-sm);margin-top:3px}
  .lc-rows{margin:10px 0 10px}
  .lc-row{height:34px}
  .lc-strip{height:16px}
  .lc-status{margin-top:10px}
}
/* a short phone: a tighter hero, so the demo keeps room for its cards */
.need .nn2{display:none}
@media (max-width:400px),(min-width:641px) and (max-width:960px){.need .nn{display:none}.need .nn2{display:inline}}   /* a tablet's pool card is as narrow as a small phone's */
@media (max-width:640px) and (max-height:820px){
  .hero{padding:6px 0 10px}
  .hero h1{font-size:clamp(29px,8.4vw,36px)}
  .hero .sub{font-size:14px;line-height:1.45;margin-top:8px}
}
@media (prefers-reduced-motion:reduce){.dl circle,.lc-status .src::before{animation:none}.dl circle{opacity:1;transform:none}}
.bd-h{display:flex;flex-direction:column;align-items:center;gap:7px;margin-bottom:26px;text-align:center;min-width:0;transition:margin .9s var(--glide)}
.bd-n{font:400 var(--d-md)/1.1 var(--display);letter-spacing:-.02em;white-space:nowrap}
.bd-s{font:400 var(--t-sm)/1.2 var(--mono);color:var(--ink-3);font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.bd-s .eta{color:var(--blue-text)}
.bd-s .sl{display:none}
.bd-s .eta.in{display:inline-block;animation:enter .45s var(--ease)}
.bd-live{display:none;flex:none;align-items:center;gap:6px;height:22px;padding:0 10px 0 8px;border-radius:var(--r-pill);background:var(--bg-3);font:500 var(--t-sm)/1 var(--sans);color:var(--ink-2)}
.bd-live i{width:6px;height:6px;border-radius:50%;background:var(--ok);opacity:.75}
.band.writing .bd-live{background:var(--blue-soft);color:var(--blue-text)}
#bdLive{display:inline-block}
.band.writing .bd-live{min-width:104px}   /* the words change every two seconds; the pill keeps its size */
.band.writing .bd-live i{background:var(--blue);opacity:1;animation:livebeat 1.1s var(--ease) infinite}
@keyframes livebeat{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--blue) 45%,transparent)}60%{box-shadow:0 0 0 5px transparent}}
.rows{position:relative;display:flex;flex-direction:column;gap:14px}
.row{display:grid;grid-template-columns:minmax(0,250px) minmax(0,1fr);align-items:center;column-gap:18px;min-width:0}
.hl{display:flex;flex-wrap:wrap;align-items:center;gap:5px 7px;min-width:0;font-size:var(--t-md);line-height:1.1;color:var(--ink-3);white-space:nowrap}
.hl .act{flex:none;width:7px;height:7px;border-radius:50%;background:var(--sw);transition:box-shadow .2s}
.hl svg{flex:none;color:var(--ink-2)}
.hl b{flex:0 1 auto;min-width:3ch;font-weight:500;color:var(--ink);overflow:hidden;text-overflow:ellipsis}
.hs{flex-basis:100%;display:flex;gap:6px;min-width:0;padding-left:14px;font:400 var(--t-xs)/1.2 var(--mono);color:var(--ink-3);font-variant-numeric:tabular-nums}
.hs .hg{overflow:hidden;text-overflow:ellipsis}
.hs .hg::before{content:"· "}
.hg.ok,.hg .cache{color:var(--blue-text)}
.hg .sl{display:none}
.row.tok .hl .act{box-shadow:0 0 0 4px color-mix(in srgb,var(--sw) 25%,transparent)}
/* the rail is the whole model; each device's cells sit at its own layers */
.cells{display:grid;grid-template-columns:repeat(40,minmax(0,1fr));gap:3px;height:30px;border-radius:3px;background:linear-gradient(var(--rule-2),var(--rule-2)) center/100% 2px no-repeat;transition:height .9s var(--glide)}
.cells i{border-radius:var(--r-xs);background:var(--bg-3);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--sw) 45%,var(--rule-3));transition:background-color .25s,box-shadow .25s,transform .35s var(--ease),filter .35s}
.js .rows:not(.dealt) .cells i{opacity:0;transform:scaleY(.4)}
.rows.dealt .cells i{animation:deal .45s var(--ease) both;animation-delay:calc(var(--k,0) * 16ms)}
@keyframes deal{from{opacity:0;transform:scaleY(.4)}}
.cells i.f{background:var(--sw);box-shadow:none;animation:cell .35s var(--ease)}
@keyframes cell{from{transform:scaleY(.4)}}
/* the room's token sweep (cellhot / actflash / cardtok / minihot), by --h from 0 to 1 (demo.js sweep) */
.demo:is([data-scene="chat"],[data-scene="code"]) .cells i{--h:0;transition:none;transform:scaleY(calc(1 + .3 * var(--h)));filter:brightness(calc(1 + .45 * var(--h))) saturate(calc(1 + .2 * var(--h)));box-shadow:0 0 10px rgba(42,69,224,calc(.5 * var(--h)))}
.hl .act{--h:0;box-shadow:0 0 0 4px color-mix(in srgb,var(--sw) calc(25% * var(--h)),transparent)}
.chip{--h:0;--chip-bd:var(--rule);transition:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--blue-soft) calc(100% * var(--h)),transparent);border-color:color-mix(in srgb,var(--sw) calc(100% * var(--h)),var(--chip-bd))}
.bd-mini i{--h:0;filter:brightness(calc(1 + .5 * var(--h))) saturate(calc(1 + .2 * var(--h)))}
.cells i.hot{transform:scaleY(1.25);background:var(--blue-400);filter:brightness(1.1);box-shadow:0 0 10px rgba(42,69,224,.55);transition:transform 0s,background-color 0s,box-shadow 0s}
.c2 .cells i.hot{background:var(--blue-500)}
.lk-l{margin-top:16px;text-align:center;font:400 var(--t-xs)/1 var(--mono);color:var(--ink-3);white-space:nowrap;transition:opacity .4s,color .2s}
.lk-l b{font-weight:500;color:var(--ink-2)}
.band.hop .lk-l,.band.hop .lk-l b{color:var(--blue-text)}
.pkt{position:absolute;left:0;top:0;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;background:#fff;opacity:0;pointer-events:none;transition:opacity .15s;
  box-shadow:0 0 0 2px var(--blue),0 0 12px 4px rgba(42,69,224,.55),0 0 26px 10px rgba(42,69,224,.22)}
.pkt.on{opacity:1}
.c0{--sw:var(--d0)}.c1{--sw:var(--d1)}.c2{--sw:var(--d2)}

/* chat: the layers become the band across the top, the way the room shows them */
.demo:is([data-scene="chat"],[data-scene="code"]) .model{bottom:auto;height:var(--band);justify-content:flex-start;background:var(--bg-2);border-bottom-color:var(--rule-2)}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .band{padding:12px 40px 0}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-h{flex-direction:row;gap:10px;height:24px;margin-bottom:8px;text-align:left}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-n{font:500 var(--t-base)/1.2 var(--sans);letter-spacing:-.01em}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-live{display:inline-flex}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-s{display:none}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .rows{gap:5px}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .row{grid-template-columns:minmax(0,230px) minmax(0,1fr)}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .hl{flex-wrap:nowrap;font-size:var(--t-sm)}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .hs{flex:none;width:18ch;margin-left:auto;padding-left:6px;justify-content:flex-start}   /* one column: "layers" starts at the same place on every row */
.demo:is([data-scene="split"],[data-scene="chat"]) .hg{display:none}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .cells{height:12px;gap:2px}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .cells i{border-radius:2px}
.lk-l{display:none}
/* the room's numbers over the band (p2p.html .sm-stats) and its fold toggle */
.lms,.bd-stats,.bd-tog,.bd-mini{display:none}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .lms{display:inline;min-width:5ch;text-align:right;color:var(--blue-text)}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-stats{display:flex;gap:4px;margin-left:auto;min-width:0;white-space:nowrap}
.bd-stats>span{display:flex;align-items:baseline;gap:5px;height:26px;padding:0 9px;font:400 var(--t-sm)/26px var(--sans);color:var(--ink-3)}
.bd-stats>span+span{box-shadow:-1px 0 0 var(--rule-2)}
.bd-stats b{font:500 var(--t-md)/26px var(--mono);color:var(--ink);font-variant-numeric:tabular-nums}
.demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-tog{display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:var(--r-sm);color:var(--ink-3)}
.s-code{top:var(--band)!important}   /* Code keeps the chat band: nothing changes size on the switch */

/* ---------- 5: chat, under the band ---------- */
.s-chat{top:var(--band)!important;display:flex;flex-direction:column}
/* the conversation sits in the middle of the stage, not at the bottom of a tall empty one */
.msgs{flex:1;min-height:0;overflow:hidden;padding:max(24px,8%) 48px 6px;display:flex;flex-direction:column;justify-content:flex-start;gap:14px}   /* top first, like the room: nothing re-centres as messages arrive */
/* scrolled: the top edge fades like the Code log's, so a message scrolled almost out never shows as a cut-off sliver */
.msgs.scrolled{-webkit-mask-image:linear-gradient(transparent 12px,#000 32px);mask-image:linear-gradient(transparent 12px,#000 32px)}
.msgs>*{flex:none}
.who{display:block;margin-bottom:4px;font-size:var(--t-sm);font-weight:500;color:var(--ink-3)}
.q,.a{display:flex;flex-direction:column;align-items:flex-start;max-width:min(80%,680px)}
.q{align-self:flex-end;align-items:flex-end}
.q p,.a p{padding:9px 14px;border-radius:var(--r-lg);font-size:var(--t-lg);line-height:1.55}
/* as the room's chat (p2p.html .m, .sys, .working, .m-acts): the bot's label and dots, the working line, the numbers */
.sys{align-self:center;display:flex;align-items:center;gap:7px;width:fit-content;font-size:var(--t-md);line-height:1.2;color:var(--blue-text);padding:6px 13px 6px 11px;border-radius:var(--r-pill);background:var(--blue-soft)}
.sys svg{flex:none;fill:currentColor}
.a .who{display:flex;align-items:center;gap:8px;white-space:nowrap}
.wd{display:inline-flex;gap:3px}
.wd i{width:6px;height:6px;border-radius:50%;background:var(--blue)}
.wd i:nth-child(2){background:var(--blue-400)}.wd i:nth-child(3){background:var(--blue-200)}
.a.streaming .wd i{animation:wdpulse 1s infinite}
.a.streaming .wd i:nth-child(2){animation-delay:.33s}.a.streaming .wd i:nth-child(3){animation-delay:.66s}
@keyframes wdpulse{0%,60%,100%{transform:none;opacity:.55}25%{transform:scale(1.5);opacity:1}}
.a .wkb{display:none}
.a.wait .wkb{display:block}
.a.wait .say{display:none}
.working{display:inline-flex;align-items:center;gap:8px;min-height:24px;font:400 var(--t-md)/1.3 var(--sans);color:var(--ink-2);white-space:nowrap;vertical-align:middle}
.wk-mk{flex:none;fill:var(--ink-2);overflow:visible}
.wk-mk circle{transform-box:fill-box;transform-origin:center;animation:dlwave 1.6s var(--ease) infinite;animation-delay:calc(var(--rc) * .12s)}
.wk-mk .lit{fill:var(--blue)}
/* the numbers' line keeps its room from the start, so it appears without moving anything */
.m-acts{display:flex;visibility:hidden;align-items:center;gap:8px;margin-top:6px;min-height:28px}
.a.done .m-acts{visibility:visible}
.icon-act{display:grid;place-items:center;width:28px;height:28px;border-radius:var(--r-sm);color:var(--ink-3)}
.m-acts .stats{font:400 var(--t-xs)/1 var(--mono);color:var(--ink-3)}
.ctools{flex:none;display:flex;align-items:center;gap:4px;margin:8px 36px 0}
.ct-b{font:500 var(--t-sm)/1 var(--sans);padding:6px 10px;color:var(--ink-3)}
.ctx{display:inline-flex;align-items:center;gap:7px;margin-left:auto;padding:0 6px;font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3)}
.ctx i{flex:none;width:14px;height:14px;border-radius:50%;background:conic-gradient(var(--blue) calc(var(--p) * 1%),var(--rule) 0);-webkit-mask:radial-gradient(circle,transparent 3.6px,#000 4.2px);mask:radial-gradient(circle,transparent 3.6px,#000 4.2px)}
.q p{background:var(--ink);color:#fff;border-bottom-right-radius:var(--r-xs)}
.a p{background:var(--white);border:1px solid var(--rule);border-bottom-left-radius:var(--r-xs)}
.say.cursor::after{content:"";display:inline-block;width:7px;height:14px;margin-left:3px;vertical-align:-2px;background:var(--blue);border-radius:1px}
#a1.cursor::after{content:none}
#a1 .ghost{visibility:hidden}
#a1 .cur{display:none;width:7px;height:14px;margin:0 -7px 0 0;vertical-align:-2px;background:var(--blue);border-radius:1px}
#a1.cursor .cur{display:inline-block}
.composer{display:flex;align-items:center;gap:10px;flex:none;height:46px;margin:6px 36px 16px;padding:0 5px 0 14px;border:1px solid var(--rule-3);border-radius:var(--r-md);background:var(--white);transition:border-color .2s,box-shadow .2s}
.composer.hot{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.field{flex:1;min-width:0;font-size:var(--t-base);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ph{color:var(--ink-4)}
.typed:not(:empty)+.ph{display:none}
.typed:not(:empty)::after{content:"";display:inline-block;width:1.5px;height:16px;margin-left:1px;vertical-align:-3px;background:var(--ink)}
.send{display:grid;place-items:center;height:34px;padding:0 14px;border-radius:var(--r-sm);background:var(--bg-3);color:var(--ink-3);font-size:var(--t-md);font-weight:500;transition:background .2s,color .2s,transform .14s}
.composer.hot .send{background:var(--blue);color:#fff}

/* ---------- 6 to 8: Code ---------- */
.s-code{display:flex}
.files{flex:none;width:188px;display:flex;flex-direction:column;padding:12px 8px;background:var(--bg-2);border-right:1px solid var(--rule-2);transition:width .9s var(--glide),padding .9s var(--glide)}
.fh{display:flex;align-items:center;gap:7px;height:28px;padding:0 8px;font:500 var(--t-sm)/1 var(--mono);color:var(--ink);white-space:nowrap}
.fh svg{flex:none;color:var(--ink-3)}
.ftree li{position:relative;display:flex;align-items:center;gap:7px;height:30px;padding:0 8px;border-radius:var(--r-sm);font:400 var(--t-sm)/1 var(--mono);color:var(--ink-2);transition:background .3s,color .3s}
.ftree li svg{flex:none;color:var(--ink-3)}
.ftree .fn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ftree .fm{display:none}
.cf-proj{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:0 4px 10px;margin-bottom:6px;border-bottom:1px solid var(--rule-2)}
.cf-sel{flex:1 1 100%;display:flex;align-items:center;justify-content:space-between;height:30px;padding:0 10px;border:1px solid var(--rule-3);border-radius:var(--r-sm);background:var(--white);font:500 var(--t-md)/1 var(--sans);color:var(--ink)}
.cf-sel svg{color:var(--ink-3)}
.cf-btn{padding:7px 11px;border:1px solid var(--rule);border-radius:var(--r-sm);background:var(--white);font:500 var(--t-sm)/1 var(--sans);color:var(--ink-2);white-space:nowrap}
.cf-kind{flex-basis:100%;font:400 var(--t-xs)/1.3 var(--mono);color:var(--ink-3)}
.ftree li.w{background:var(--white);color:var(--ink);box-shadow:inset 0 0 0 1px var(--rule)}
.ftree li.w::after{content:"";position:absolute;right:10px;top:50%;width:5px;height:5px;margin-top:-2.5px;border-radius:50%;background:var(--blue);animation:blink .9s ease-in-out infinite}
.ftree li.mod .fm::after{content:" M";color:var(--blue-text);font-weight:500}
.ftree li.new{animation:enter .4s var(--ease)}
.fempty{display:none;padding:6px 8px 0 22px;font-size:var(--t-sm);color:var(--ink-4)}
.files.none .fempty{display:block}
@keyframes blink{50%{opacity:.25}}

.agent{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg)}
.ag-h{flex:none;display:flex;align-items:center;gap:10px;height:48px;padding:0 18px;border-bottom:1px solid var(--rule-2);font-size:var(--t-base);font-weight:500}
.ag-h::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.ag-m{margin-left:auto;font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.log{flex:1;min-height:0;overflow:hidden;padding:16px 18px 8px;display:flex;flex-direction:column;gap:10px;-webkit-mask-image:linear-gradient(transparent,#000 28px);mask-image:linear-gradient(transparent,#000 28px)}
.log>:first-child{margin-top:auto}
.log>*{flex:none}
.cu{align-self:flex-end;max-width:86%;display:flex;flex-direction:column;align-items:flex-end}
.cu .who{margin-bottom:5px}
.cu p{padding:9px 14px;border-radius:var(--r-lg) var(--r-lg) var(--r-xs) var(--r-lg);background:var(--ink);color:#fff;font-size:var(--t-base);line-height:1.45}
.cstats p{text-align:center;font:400 var(--t-xs)/1.4 var(--mono);color:var(--ink-3)}
.ct p{font-size:var(--t-base);line-height:1.55}
.tool,.wlive{border:1px solid var(--rule);border-radius:var(--r-md);background:var(--white);font:400 var(--t-sm)/1.2 var(--mono);overflow:hidden}
.tl{display:flex;align-items:center;gap:8px;height:46px;padding:0 10px}
.tl .ms{flex:none;font-size:var(--t-xs);color:var(--ink-3)}
.tl .nm{flex:none;color:var(--blue-text)}
.tl .br{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink)}
.tl .dn{display:inline-flex;gap:6px}
.dn .add{color:var(--ok)}.dn .del{color:var(--del)}
.tl .st{flex:none;padding:3px 8px;border-radius:var(--r-xs);font-size:var(--t-xs);color:var(--ok);box-shadow:inset 0 0 0 1px #B7D9C1}
.tl .st.run{color:var(--blue-text);box-shadow:inset 0 0 0 1px var(--blue-200)}
.lh{display:flex;align-items:center;gap:8px;height:32px;padding:0 10px;background:var(--bg-3);color:var(--ink-3)}
.lh .nm::before{content:"";display:inline-block;width:6px;height:6px;margin-right:6px;border-radius:50%;background:var(--blue);vertical-align:1px;animation:blink .9s ease-in-out infinite}
.lh b{font-weight:500;color:var(--ink)}
.lh .n{margin-left:auto;font-variant-numeric:tabular-nums}
/* the live card, as the room's .cm-live: code never wraps (a soft fade at the right edge), pinned to the latest
   lines; its height is set once for what it will show (at most 6 lines, 3 on a short screen) so it never grows */
.wlive pre{--lvn:6;--lvmax:6;height:calc(min(var(--lvn),var(--lvmax)) * 1.55em + 16px);overflow:hidden;margin:0;padding:8px 10px;font:400 var(--t-sm)/1.55 var(--mono);color:var(--ink);white-space:pre;display:flex;flex-direction:column;justify-content:flex-end;
  -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 24px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 24px),transparent)}
@media (max-height:820px){.wlive pre{--lvmax:3}.diff .rs .r:nth-child(n+4){display:none}}
.demo.editing .app{transition:none}
.wlive pre>span{display:block;flex:none;min-height:1.55em;overflow:hidden;animation:ln .2s var(--ease)}
@keyframes ln{from{opacity:0}}
.wlive pre>span:last-child::after{content:"";display:inline-block;width:6px;height:11px;margin-left:2px;vertical-align:-1px;background:var(--blue)}
.diff{border-top:1px solid var(--rule-2);font-size:var(--t-sm);line-height:1.5;-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 20px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 20px),transparent)}
.diff .dh{display:flex;align-items:center;gap:10px;padding:6px 24px 6px 10px;background:var(--bg-3);color:var(--ink-3)}
.diff .dh b{font-weight:500;color:var(--ink)}
.diff .dh .dn{margin-left:auto}
.diff .rs{padding:4px 0}
.diff .r{display:block;position:relative;padding:0 10px 0 24px;white-space:pre;overflow:hidden;color:var(--ink)}
.diff .r::before{position:absolute;left:10px}
/* the code's colours, as the room's editor (p2p.html #ed-hl .t-*); no orange: numbers are indigo */
:is(.wlive pre,.diff) :is(.t-k,.t-t){color:var(--blue-600)}
:is(.wlive pre,.diff) .t-s{color:#1F7A45}
:is(.wlive pre,.diff) .t-c{color:#8A8D96;font-style:italic}
:is(.wlive pre,.diff) .t-n{color:#5B4BD6}
:is(.wlive pre,.diff) :is(.t-f,.t-p){color:#0E6E8C}
:is(.wlive pre,.diff) .t-a{color:#7446B8}
.diff .r.add{background:var(--diff-add)}.diff .r.add::before{content:"+";color:var(--ok)}
.diff .r.del{background:var(--diff-del)}.diff .r.del::before{content:"-";color:var(--del)}
.agent .composer{margin:8px 18px 14px}
.cbar{flex:none;display:flex;align-items:center;gap:8px;padding:6px 18px 0;font-size:var(--t-sm);color:var(--ink-3)}
.cb-auto{display:inline-flex;align-items:center;gap:6px}
.cb-auto i{width:13px;height:13px;border-radius:3px;background:var(--blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M3 6.2l2 2 4-4.4' fill='none' stroke='%23fff' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat}
.cb-b{padding:5px 9px;font-weight:500}
.composer .stop{display:none;place-items:center;height:34px;padding:0 14px;border-radius:var(--r-sm);background:var(--ink);color:#fff;font-size:var(--t-md);font-weight:500}
.composer.run .stop{display:grid}.composer.run .send{display:none}

.pvcol{flex:none;width:0;overflow:hidden;transition:width .9s var(--glide)}
.demo.served .pvcol{width:var(--pvw)}
.pv{width:var(--pvw);height:100%;display:flex;flex-direction:column;border-left:1px solid var(--rule-2);background:var(--game);transition:width .9s var(--glide)}
.pv-bar{position:relative;justify-content:flex-start;gap:6px;height:40px;padding:0 8px;background:var(--bg-2)}
.pv-rl{flex:none;width:30px;color:var(--ink-3);padding:0 9px}
.pv-addr{flex:1;min-width:0;height:28px;padding:0 12px;overflow:hidden;white-space:nowrap;font-size:var(--t-sm);gap:0}
.pv-addr svg{flex:none;margin-right:7px}
.pv-addr .host{color:var(--ink)}
/* the room's preview (p2p.html .out-h, #pv-bar, #pv-console): Preview | Editor, the address with its rev and sandbox, Open; the console */
.pv-h{flex:none;display:flex;align-items:center;height:44px;padding:0 10px;background:var(--bg-2);border-bottom:1px solid var(--rule-2)}
.pv-tabs{display:inline-flex;gap:2px;padding:3px;border-radius:var(--r-md);background:var(--bg-3);box-shadow:inset 0 0 0 1px var(--rule-2)}
.pv-tabs span{display:grid;place-items:center;height:28px;padding:0 12px;border-radius:var(--r-sm);font:500 var(--t-md)/1 var(--sans);color:var(--ink-3)}
.pv-tabs .on{background:var(--white);color:var(--ink);box-shadow:0 1px 2px rgba(20,22,29,.08),0 0 0 1px rgba(20,22,29,.05)}
.pv-rev{flex:none;font:400 var(--t-xs)/1 var(--mono);color:var(--ok)}
.pv-sb{flex:none;padding:4px 6px;border-radius:var(--r-xs);box-shadow:inset 0 0 0 1px var(--rule-3);font:400 var(--t-xs)/1 var(--mono);color:var(--ink-3)}
.pv-open{flex:none;display:inline-flex;align-items:center;gap:6px;padding:5px 9px;font:500 var(--t-sm)/1 var(--sans);color:var(--ink-3)}
.demo.playing :is(.pv-rev,.pv-sb,.pv-open){display:none}
.pv-con{flex:none;display:flex;align-items:center;gap:6px;height:32px;padding:0 10px;border-top:1px solid var(--rule-2);background:var(--white);font:400 var(--t-sm)/1 var(--mono);color:var(--ink-3)}
.pv-con svg{flex:none;margin:0 4px}
.pv-con .k{font:500 var(--t-sm)/1 var(--sans);color:var(--ink-2)}
.pv-con .n{flex:1}
.pv-con .c{font:500 var(--t-sm)/1 var(--sans);color:var(--ink-3)}
@media (max-height:860px){.pv-con{display:none}}
/* the edit overlay: the preview frosts over while the agent edits the app (p2p.html .ew) */
.ew{position:absolute;inset:0;z-index:2;display:grid;place-items:center;background:rgba(250,250,247,.55);-webkit-backdrop-filter:blur(3px) saturate(.9);backdrop-filter:blur(3px) saturate(.9);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility 0s .25s}
.demo.editing .ew{opacity:1;visibility:visible;transition:opacity .25s var(--ease),visibility 0s}
.ew-box{display:flex;flex-direction:column;align-items:center;gap:12px;max-width:calc(100% - 32px)}
.ew-t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%;font:500 var(--t-md)/1.2 var(--sans);color:var(--ink-2)}
/* take the game over: offered for a moment during the story (.ask), and whenever the story is over (.done) */
.pv-back{display:none;flex:none;height:26px;padding:0 10px;border-radius:var(--r-sm);background:var(--white);box-shadow:inset 0 0 0 1px var(--rule-3);font:500 var(--t-sm)/1 var(--sans);color:var(--ink);white-space:nowrap}
.pv-back:hover{background:var(--bg-3)}
.demo.playing .pv-back{display:block}
@keyframes offer{0%{box-shadow:0 0 0 0 rgba(124,143,255,.55),0 8px 20px -8px rgba(42,69,224,.8)}70%{box-shadow:0 0 0 14px rgba(124,143,255,0),0 8px 20px -8px rgba(42,69,224,.8)}}
html:not(.js) .pad{display:none}
/* touch: a pad of arrow keys and space, only while the visitor plays */
.pad{position:absolute;left:0;right:0;bottom:0;z-index:3;display:none;justify-content:space-between;align-items:flex-end;padding:10px;pointer-events:none}
.demo.playing.touch .pad{display:flex}
.demo.playing.touch .app{bottom:68px}
.pad span{display:flex;gap:8px;pointer-events:auto}
.pad button{display:grid;place-items:center;width:48px;height:48px;border-radius:var(--r-md);background:rgba(238,240,246,.12);box-shadow:inset 0 0 0 1px rgba(238,240,246,.18);color:var(--on-game);font:500 var(--t-sm)/1 var(--mono);touch-action:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}
.pad button.on{background:rgba(124,143,255,.4)}
.pad .pad-a{width:64px}
.br-load{position:absolute;left:0;right:0;bottom:-1px;height:2px}
.br-load i{display:block;height:100%;width:0;background:var(--blue)}
.br-load i.go{animation:ld .5s var(--ease) forwards}
@keyframes ld{0%{width:0;opacity:1}80%{width:100%;opacity:1}100%{width:100%;opacity:0}}
.pv-frame{position:relative;flex:1;min-height:0}
.app{position:absolute;inset:0;transition:opacity .3s var(--ease)}
.app.blank{opacity:0}
.game{position:absolute;inset:0;outline:none;cursor:pointer}
.game:focus-visible{box-shadow:inset 0 0 0 2px var(--blue-400)}
.game canvas{position:absolute;inset:0;display:block;width:100%;height:100%}
.board-static{position:absolute;left:50%;top:50%;height:calc(100% - 40px);width:auto;aspect-ratio:1/2;transform:translate(-50%,-50%);border-radius:6px}
.js .board-static{display:none}
html:not(.js) .game canvas{display:none}


/* ---------- the step bar under the window ---------- */
.stepbar{display:flex;align-items:center;gap:14px;min-height:58px;margin-top:12px;padding:6px 8px 6px 10px;background:var(--white);border:1px solid var(--rule);border-radius:var(--r-lg);box-shadow:0 1px 2px rgba(20,22,29,.04),0 10px 24px -18px rgba(20,22,29,.16)}
.sb-now{display:none;flex:1;min-width:0;align-items:center;gap:12px;white-space:nowrap}
.js .sb-now{display:flex}
.sb-n{flex:none;display:grid;place-items:center;min-width:42px;height:28px;padding:0 8px;border-radius:var(--r-sm);background:var(--blue-soft);font:500 var(--t-sm)/1 var(--mono);color:var(--blue-text);font-variant-numeric:tabular-nums}
.sb-t{min-width:0;overflow:hidden;text-overflow:ellipsis;font-size:16px;font-weight:500;letter-spacing:-.01em;color:var(--ink)}
.sb-t.in{animation:capin .45s var(--ease)}
@keyframes capin{from{opacity:0;transform:translateY(5px)}}
.sb-dots{display:flex;align-items:center}
.sb-dots li.gap{margin-left:10px}
.sb-dots button{position:relative;display:grid;place-items:center;height:34px;padding:0 4px;border-radius:var(--r-sm)}
.sb-dots button:hover{background:var(--bg-3)}
.sb-dots i{display:block;width:7px;height:7px;border-radius:4px;background:var(--rule-3);transition:width .4s var(--ease),background-color .3s}
.sb-dots .done i{background:var(--ink-3)}
.sb-dots .cur i{width:24px;background:linear-gradient(90deg,var(--blue) var(--p,0%),var(--blue-200) var(--p,0%))}
.js .sb-dots .lbl{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.replay{position:relative;display:none;place-items:center;flex:none;width:34px;height:34px;border-radius:var(--r-sm);color:var(--ink-3)}
.js .replay{display:grid}
.replay:hover{background:var(--bg-3);color:var(--ink)}

/* ---------- closer + footer ---------- */
.closer{position:relative;overflow:hidden;padding:clamp(80px,11vw,140px) 0 clamp(80px,10vw,128px);text-align:center}
.closer .swarm{-webkit-mask-image:radial-gradient(ellipse 60% 78% at 50% 48%,#000 35%,transparent 100%);mask-image:radial-gradient(ellipse 60% 78% at 50% 48%,#000 35%,transparent 100%)}
.closer-in{position:relative}
.logo-slot{display:grid;place-items:center;width:96px;height:96px;margin:0 auto 34px}
.logo-slot svg{color:var(--ink)}
.js .logo-slot svg{visibility:hidden}
.closer h2{max-width:15em;margin:0 auto;font:400 clamp(34px,4.8vw,60px)/1.05 var(--display);letter-spacing:-.035em;text-wrap:balance;text-shadow:0 0 24px var(--bg),0 0 6px var(--bg)}
.closer h2 span{color:var(--blue)}
.ctas{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:34px}
.footer{border-top:1px solid var(--rule)}
.foot-in{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px 24px;padding-top:22px;padding-bottom:26px;font-size:var(--t-md);color:var(--ink-3)}


/* ---------- no JS: every scene, finished, one under the other ---------- */
html:not(.js) .modes{display:none}   /* a switch nothing drives: both scenes show below */
html:not(.js) .body{height:auto}
html:not(.js) .s-tabs{height:400px}
html:not(.js) #tabA .mpre,html:not(.js) #tabA .mwait,html:not(.js) #tabB .mbtn{display:none}
html:not(.js) #tabA .mpost,html:not(.js) #tabA .mjoined,html:not(.js) #tabB .mok{display:flex}
html:not(.js) .model{position:static;padding:30px 0;border-top:1px solid var(--rule-2)}
html:not(.js) .cells i{background:var(--sw);box-shadow:none}
html:not(.js) .pkt{display:none}
html:not(.js) .s-chat{border-top:1px solid var(--rule-2)}
html:not(.js) .msgs{padding-top:24px}
html:not(.js) .composer,html:not(.js) .wlive{display:none}
html:not(.js) .a .m-acts{visibility:visible}
html:not(.js) :is(.diff.new,.ctools,.cbar){display:none}
html:not(.js) .log{-webkit-mask-image:none;mask-image:none;overflow:auto}
html:not(.js) .s-code{height:600px;border-top:1px solid var(--rule-2)}
html:not(.js) .pvcol{width:var(--pvw)}
html:not(.js) .stepbar{display:block;padding:14px 18px}
html:not(.js) .sb-dots{display:block;counter-reset:st}
html:not(.js) .sb-dots li{counter-increment:st;font-size:var(--t-lg);line-height:1.9;color:var(--ink-2)}
html:not(.js) .sb-dots li.gap{margin-left:0}
html:not(.js) .sb-dots li::before{content:counter(st) ". ";font:500 var(--t-sm)/1 var(--mono);color:var(--ink-3)}
html:not(.js) .sb-dots button{display:inline;height:auto;padding:0;cursor:default;pointer-events:none}
html:not(.js) .sb-dots i{display:none}

/* ---------- the stage fits the screen (demo.js sets --body-h so the hero and the demo share the first
   screen); the scenes tighten by the stage's own size, not the window's ---------- */
.js .body{container:stage/size}
@container stage (max-height:430px){
  .s-tabs{padding:12px 18px 14px;gap:18px}
  .tab-dev{height:24px}
  .tab-bar{height:28px}
  .url{height:19px}
  .tab-body{padding:10px}
  .mpre,.mpost,.mjoin{padding:14px 16px}
  .mpre>p:not(.nm-k){display:none}
  .mpre .nm-k{margin-top:12px}
  .mjoin .nm-k{display:none}
  .mjoin .devname{margin-top:12px}
  .devname{height:34px;margin-bottom:12px}
  .slots{margin-bottom:12px}
  .slots i{height:44px}
  .mbtn,.mok{height:36px}
  .mcode{font-size:32px}
  .mwait,.mjoined{margin-top:10px;padding-top:10px}
  .cd-pick{padding:16px 18px 16px}
  .cd-h{margin-bottom:12px}
  .cd-h b{font-size:var(--d-sm)}
  .rungs{gap:5px;margin-bottom:12px}
  .rungs li{height:42px}
  .cd-pick .mbtn{height:40px}
  .cd-sec{padding:14px 18px}
  .meter{margin:12px 0 26px}
  .bd-h{margin-bottom:18px}
  .rows{gap:10px}
  .cells{height:24px}
  .lk-l{margin-top:12px}
  .msgs{padding-top:16px;gap:10px}
  .ctools{display:none}   /* the chat keeps room for the question and the whole answer */
}
@container stage (max-height:350px){
  .cd-h span{display:none}
  .rungs li{height:38px}
  .cd-sec{padding:12px 16px}
  .cd-me .ap-step .step{width:28px;height:28px}
}
/* a narrow stage: two tabs side by side as two small screens; the model card shows one side at a time */
@container stage (max-width:600px){
  /* one device's screen at a time: the laptop starts the room, then the desktop takes the stage to join it */
  .s-tabs{grid-template-columns:minmax(0,1fr);grid-template-areas:"t";gap:0;padding:12px 14px 14px}
  .tab{grid-area:t;transition:transform .55s var(--ease),opacity .4s var(--ease)}
  .js #tabB.idle{opacity:0;transform:translateX(28px);pointer-events:none}
  .js .s-tabs:has(#tabB:not(.idle)) #tabA{opacity:0;transform:translateX(-28px);pointer-events:none}
  .js .demo.merge #tabA{transform:translateX(-28px)}
  .js .demo.merge #tabB{transform:scale(.96);opacity:0}
  .tab-dev{height:30px;gap:7px;font-size:var(--t-md)}
  .tab-body{padding:14px}
  html:not(.js) .tab{grid-area:auto}
  html:not(.js) .s-tabs{grid-template-areas:none;gap:14px;height:auto}

  .card{width:calc(100% - 24px)}
  .card[data-face="pool"] .cd-pick,.card[data-face="pick"] .cd-pool{display:none}
  .card .cd-pick,.card .cd-pool{animation:enter .4s var(--ease)}
  .cd-pool{border-left:0}
  .cd-pick{padding:14px 14px 14px}
  .cd-h{margin-bottom:12px}
  .cd-h b{font-size:var(--d-sm)}
  .cd-h span{display:none}
  .rungs li{height:42px;padding:0 12px 0 10px;gap:8px;font-size:var(--t-md)}
  .fig{gap:6px}
  .cd-pick .mbtn{height:40px}
  .cd-sec{padding:14px 14px}

  .band{padding:0 12px}
  .bd-n{font-size:var(--d-sm)}
  .bd-s{font-size:var(--t-xs)}
  .bd-s .hx,.bd-s .of{display:none}
  .bd-s .sl{display:inline}
  .row{grid-template-columns:minmax(0,40%) minmax(0,1fr);column-gap:10px}
  .hl{font-size:var(--t-sm)}
  .hl svg{display:none}
  .hs{padding-left:14px;font-size:10px}
  .hs .lr{display:none}
  .hs .hg::before{content:none}
  .hg .hx,.hg .of{display:none}
  .hg .sl{display:inline}
  .cells{gap:1.5px;height:24px}
  .cells i{border-radius:2px}
  /* a phone folds the band, as the room does: the name, Writing, the strip of layers */
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .band{padding:8px 8px 0 12px}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-h{height:28px;margin:0}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) :is(.bd-s,.rows){display:none}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-mini{display:flex;flex:1 1 0;min-width:40px;height:16px;gap:1.5px}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-stats{display:none}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-tog svg{transform:rotate(180deg)}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .bd-n{font-size:var(--t-base)}
  .msgs{padding:12px 12px 6px}
  .q,.a{max-width:92%}
  .q p,.a p{font-size:var(--t-base);padding:8px 12px}
  .composer{margin:6px 12px 12px}
  .ctools{margin:6px 12px 0}
}

/* ---------- wide: the headline on one line ---------- */
@media (min-width:1100px){
  .hero h1{max-width:none}
  .hero h1 span{display:inline}
}
/* ---------- shorter windows: a tighter hero ---------- */
@media (min-width:641px) and (max-height:860px){
  .hero{padding:12px 0 14px}
  .hero .sub{margin-top:10px}
  .modes{margin-bottom:10px}
  .hd{height:46px}
  .stepbar{min-height:52px;margin-top:10px;padding-top:4px;padding-bottom:4px}
}

/* ---------- tablet ---------- */
@media (max-width:1000px){
  :root{--pvw:360px}
  .files{width:156px}
  .ag-m{display:none}
  .band{padding:0 28px}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .band{padding:12px 22px 0}
  .demo:is([data-scene="split"],[data-scene="chat"],[data-scene="code"]) .lk-l{right:22px}
  .msgs{padding:14px 24px 6px}
  .composer{margin:6px 22px 14px}
  .ctools{margin:8px 22px 0}
}
@media (max-width:820px){
  .files{display:none}
}
/* tablet: the room bar's three chips and the band's stats need the room their GB labels and 'context' took */
@media (min-width:641px) and (max-width:900px){
  .chip .cg{display:none}
  .bd-stats>span:last-child{display:none}
}
/* tablet: the phone's two-row step bar (the whole caption above the dots) instead of an ellipsised one */
@media (min-width:641px) and (max-width:900px){
  .stepbar{flex-wrap:wrap;gap:0 6px;padding:8px 6px 2px 12px}
  .sb-now{flex-basis:100%;padding-right:8px;align-items:flex-start;gap:10px}
  .sb-n{margin-top:2px}
  .sb-t{white-space:normal;line-height:1.35;min-height:calc(2.7em + 4px);padding-top:4px}
  .sb-dots{margin-left:-4px}
  .replay{margin-left:auto}
}
@media (min-width:641px) and (max-width:720px){
  .hd-k,.hd-sum .pw{display:none}   /* "Room" and "pooled" too, as on a phone */
}

/* ---------- phone ---------- */
@media (max-width:640px){
  :root{--band:44px;--fold:44px}
  .hero{padding:12px 0 12px}
  .hero h1{font-size:clamp(31px,9.2vw,40px)}
  .hero h1 span{display:block}
  .hero .sub{font-size:15px;line-height:1.5;margin-top:10px}
  .hero .swarm{-webkit-mask-image:radial-gradient(ellipse 85% 70% at 50% 50%,#000 30%,transparent 100%);mask-image:radial-gradient(ellipse 85% 70% at 50% 50%,#000 30%,transparent 100%)}
  .modes{margin-bottom:10px}
  .modes button,.modes .pill{height:30px}

  .hd{gap:8px;height:44px;padding:0 10px 0 12px}
  .hd-room{gap:6px;font-size:var(--t-sm)}
  .hd-room .mark{display:none}
  .chips{gap:4px;justify-content:flex-end}
  .chip{height:26px;padding:0 7px;gap:0}
  .chip .cn,.chip .cg,.demo .chip .cst{display:none!important}
  .chip svg{display:block;margin-left:5px}
  .chip::before{margin-right:0}
  .hd-sum{margin-left:0;font-size:var(--t-xs)}
  .hd-k{display:none}
  /* a phone: the notice drops into the room bar itself, at its right end (where Invite and this device's
     button sit for a moment), so it never covers a card; the new device's chip slides in beside it */
  .toasts{top:7px;right:8px;bottom:auto;left:auto;align-items:flex-end}
  .toast{padding:7px 12px 7px 11px;border-radius:10px;font-size:var(--t-sm);box-shadow:0 0 0 1px var(--rule),0 6px 18px -8px rgba(20,22,29,.3)}
  .toast.on{animation-name:toastdown}
  .toast.out{animation-name:toastup}
  .toasts:has(#toastC:is(.on,.out)) #toastB{display:none}   /* one notice at a time: the newest */
  .win:has(.toast:is(.on,.out)) :is(.hd-sum,.hd-inv,.hd-me){opacity:0;transition:opacity .2s}
  .hd-sum,.hd-inv,.hd-me{transition:opacity .3s .1s}
  .hd-code{margin-right:0}
  .hd-inv{width:30px;height:30px;padding:0}
  .hd-inv .lbl,.hd-sum .pw{display:none}
  .hd-me{width:30px;height:30px}
  .pv-addr .pth,.pv-open{display:none}
  html:not(.js) .s-tabs{height:auto;grid-template-columns:minmax(0,1fr);gap:14px}
  html:not(.js) .tab-body{min-height:220px}

  .agent .composer{margin:6px 12px 12px}
  .log{padding:10px 12px 6px}
  .pvcol{position:absolute;inset:0;width:auto!important;opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility 0s .45s}
  .demo.served.app-on .pvcol{opacity:1;visibility:visible;transition:opacity .45s var(--ease),visibility 0s}
  .pv{width:auto!important;border-left:0}
  html:not(.js) .pvcol{position:static;height:480px}
  html:not(.js) .s-code{flex-direction:column;height:auto}

  .stepbar{flex-wrap:wrap;gap:0 6px;margin-top:10px;padding:8px 6px 2px 12px}
  .sb-now{flex-basis:100%;padding-right:8px;align-items:flex-start;gap:10px}
  .sb-n{min-width:36px;height:24px;margin-top:2px}
  .sb-t{font-size:var(--t-base);white-space:normal;line-height:1.35;min-height:calc(2.7em + 4px);padding-top:4px}
  .sb-dots{margin-left:-4px}
  .sb-dots li.gap{margin-left:6px}
  .sb-dots button{height:32px}
  .replay{margin-left:auto;height:32px}

  .logo-slot{width:80px;height:80px;margin-bottom:26px}
  .closer h2{font-size:clamp(32px,9.4vw,40px)}
  .ctas{margin-top:28px}
}

/* ---------- touch: at least 44px to hit ---------- */
@media (pointer:coarse){
  .nav .btn,.modes button,.sb-dots button,.replay{position:relative}
  .nav .btn::before,.modes button::before,.sb-dots button::before,.replay::before{content:"";position:absolute;inset:-8px}
  .modes button::before{inset:-6px 0}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0s!important;scroll-behavior:auto!important}
}
/* with JS, the demo stays hidden until demo.js has reset it to step 1 (the static markup is the finished Code scene) */
.js .demo:not([data-ready]) :is(.modes,.win,.stepbar){visibility:hidden}
/* the room bar's Invite: always there once there is a room, as in the room (not over the two tabs, before anyone is in one) */
.js .demo[data-scene="tabs"] .hd-inv{opacity:0;visibility:hidden}
.hd-inv{transition:opacity .3s var(--ease),visibility 0s}