/* Allusay website. One dark look taken from the logo; one centered column. Fonts are served from
   this site (fonts/, SIL OFL 1.1) so a visit makes no request to anyone else. */
@font-face{font-family:'Instrument Serif';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/instrument-serif.woff2) format('woff2')}
@font-face{font-family:'Instrument Serif';font-style:italic;font-weight:400;font-display:swap;src:url(fonts/instrument-serif-italic.woff2) format('woff2')}
@font-face{font-family:'Geist';font-style:normal;font-weight:100 900;font-display:swap;src:url(fonts/geist.woff2) format('woff2')}
@font-face{font-family:'Geist Mono';font-style:normal;font-weight:100 900;font-display:swap;src:url(fonts/geist-mono.woff2) format('woff2')}

:root{
  color-scheme:dark;
  --bg:#0B0E14; --bg-2:#11151E; --bg-3:#171C28;
  --line:rgba(214,222,255,.09); --line-2:rgba(214,222,255,.16);
  --fg:#EEF1F8; --muted:#A6ADC2; --dim:#828AA1;
  --ice:#C9D2FF; --accent:#7B8CFF; --deep:#3D63F2;
  --glow:rgba(84,104,245,.45);
  --display:'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans:'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --ease:cubic-bezier(.22,.8,.24,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
/* In-page targets land below the sticky header (84px tall at the top; #hero lands at the top) */
section[id]{scroll-margin-top:84px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:clip}
img{max-width:100%}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{text-wrap:balance}
.serif{font-family:var(--display);font-weight:400;letter-spacing:-.02em}
.it{font-style:italic}
.grad{background:linear-gradient(100deg,#fff 0%,var(--ice) 42%,var(--accent) 100%);-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:.08em}
.lede{color:var(--muted);font-size:clamp(17px,2vw,19px);max-width:58ch}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;font-weight:500;font-size:15px;border:1px solid transparent;transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s}
.btn svg{width:17px;height:17px;flex:none}
.btn-primary{background:var(--fg);color:var(--bg);box-shadow:0 10px 36px -12px rgba(123,140,255,.8)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px -10px rgba(123,140,255,.95)}
.btn-lg{min-height:56px;padding:0 28px;font-size:16px}
/* The alternative to the primary download (the offline edition): same shape, frosted glass */
.btn-glass{background:rgba(238,241,248,.08);color:var(--fg);border-color:rgba(238,241,248,.18);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn-glass:hover{transform:translateY(-2px);background:rgba(238,241,248,.13)}

/* header: the badge shrinks to the mark once you scroll */
header.top{position:sticky;top:0;z-index:50;border-bottom:1px solid transparent;transition:background .4s,border-color .4s}
header.top .bar{display:flex;align-items:center;gap:12px 28px;padding-block:16px;transition:padding .4s var(--ease)}
header.top.scrolled{background:rgba(11,14,20,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line)}
header.top.scrolled .bar{padding-block:10px}
.brand{display:flex;align-items:center;flex-grow:1}
.badge{display:flex;align-items:center;gap:10px;width:160px;height:52px;padding-left:12px;border-radius:26px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.1);overflow:hidden;white-space:nowrap;transition:width .6s var(--ease),background .4s,box-shadow .4s}
.badge .mark{display:block;width:36px;height:27px;flex:none}
.badge .wm{font:500 25px/1 var(--sans);letter-spacing:-.02em;color:#fff;transition:opacity .35s var(--ease)}
.brand:hover .badge{box-shadow:inset 0 0 0 1px rgba(201,210,255,.28)}
header.top.scrolled .badge{width:60px;background:rgba(255,255,255,.035)}
header.top.scrolled .badge .wm{opacity:0}
header.top.scrolled .brand:hover .badge,header.top.scrolled .brand:focus-visible .badge{width:160px}
header.top.scrolled .brand:hover .wm,header.top.scrolled .brand:focus-visible .wm{opacity:1}
.nav{display:flex;flex-wrap:wrap;gap:4px 24px;font-size:15px;color:var(--muted)}
.nav a:hover{color:var(--fg)}

/* hero */
.hero{position:relative;text-align:center;padding-block:40px;overflow-x:clip}
.hero .wrap{display:flex;flex-direction:column;align-items:center}
.aura{position:absolute;left:50%;top:-180px;width:min(1200px,140vw);height:820px;transform:translateX(-50%);pointer-events:none;
  background:radial-gradient(closest-side,rgba(84,104,245,.40),rgba(84,104,245,.10) 55%,transparent 100%);animation:breathe 9s ease-in-out infinite}
.logo-float{position:relative;width:clamp(120px,16vw,180px);animation:float 7s ease-in-out infinite;will-change:transform}
.logo-float img{width:100%;height:auto;filter:drop-shadow(0 24px 50px rgba(61,99,242,.55))}
.hero h1{position:relative;margin:24px 0 0;font-size:clamp(46px,8.2vw,108px);line-height:.96}
.hero .lede{position:relative;margin:24px auto 0}
.cta-row{position:relative;margin-top:32px;display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.fine{position:relative;margin-top:14px;font-size:13px;color:var(--dim);font-family:var(--mono)}
.cta-row + .fine{margin-top:24px}
.intro{animation:rise 1s var(--ease) both;animation-delay:calc(var(--i,0) * 90ms)}

/* demo: a self-playing app window. The pill follows the app design. */
.demo{position:relative;margin-top:56px;width:100%;max-width:960px;text-align:left;
  --app-font:-apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', system-ui, sans-serif;
  --app-pill:#27272A; --app-accent:#7D7BF0; --app-danger:#E5484D}
.window{position:relative;background:var(--bg-2);border:1px solid var(--line-2);border-radius:20px;overflow:hidden;box-shadow:0 50px 120px -40px rgba(61,99,242,.55),0 0 0 1px rgba(255,255,255,.02) inset}
.chrome{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line)}
.dot{width:11px;height:11px;border-radius:50%;background:#2A3042}
.tabs{display:flex;gap:4px;margin-left:12px;flex-wrap:wrap}
.tab{font-size:13px;color:var(--dim);padding:4px 12px;border-radius:8px;transition:background .3s,color .3s}
.tab.on{background:var(--bg-3);color:var(--fg)}
.field{padding:9px 28px;font-size:14px;color:var(--dim);border-bottom:1px solid var(--line)}
.field span{color:var(--fg)}
.doc{position:relative;min-height:220px;padding:26px 28px 140px;font-size:clamp(16px,1.8vw,19px);line-height:1.65;color:#E4E8F3;white-space:pre-wrap}
.caret{display:inline-block;width:2px;height:1.1em;background:var(--accent);vertical-align:-.18em;margin-left:1px;animation:blink 1s steps(1) infinite}
.said{position:absolute;left:50%;bottom:84px;transform:translateX(-50%);width:min(560px,calc(100% - 40px));text-align:center;font-family:var(--mono);font-size:13px;line-height:1.5;color:var(--muted);transition:opacity .4s,color .4s}
.said.done{color:var(--dim);opacity:.6}
.apill{position:absolute;left:50%;bottom:30px;transform:translateX(-50%);width:60px;height:20px;border-radius:999px;background:var(--app-pill);font-family:var(--app-font);box-shadow:0 12px 30px -8px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.07);overflow:hidden;transition:width .45s var(--ease),height .45s var(--ease),bottom .45s var(--ease)}
.apill > div{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .25s}
.p-idle i{display:block;width:28px;height:4px;border-radius:2px;background:#52525B}
.p-listen{gap:10px;padding:0 8px 0 14px;justify-content:flex-start !important}
.p-listen svg{width:16px;height:16px;stroke:#fff;flex:none}
.p-wave{display:flex;align-items:center;gap:3px;height:22px}
.p-wave i{display:block;width:3px;height:20px;border-radius:2px;background:var(--app-accent);transform:scaleY(.2);will-change:transform}
.p-time{font-size:13px;font-weight:510;color:#fff;font-variant-numeric:tabular-nums;margin-left:auto}
.p-stop{width:20px;height:20px;border-radius:50%;background:var(--app-danger);display:grid;place-items:center;flex:none}
.p-stop b{width:7px;height:7px;border-radius:1.5px;background:#fff}
.p-proc{gap:8px;color:#fff;font-size:13px;font-weight:510}
.p-proc i{width:6px;height:6px;border-radius:50%;background:var(--app-accent);animation:dotp 1s ease-in-out infinite}
.p-proc i:nth-child(2){animation-delay:.15s}.p-proc i:nth-child(3){animation-delay:.3s}
.p-proc span{margin-left:4px}
.demo[data-state="idle"] .p-idle,.demo[data-state="typing"] .p-idle{opacity:1}
.demo[data-state="listening"] .apill{width:189px;height:36px;bottom:22px}
.demo[data-state="listening"] .p-listen{opacity:1;transition-delay:.15s}
.demo[data-state="processing"] .apill{width:164px;height:34px;bottom:23px}
.demo[data-state="processing"] .p-proc{opacity:1;transition-delay:.15s}

/* strip */
.strip{padding-block:56px 0;text-align:center;color:var(--dim);font-size:15px}

/* sections */
section.block{padding-block:110px 40px}
.head{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px}
.head h2{margin:0;font-size:clamp(38px,5.6vw,70px);line-height:1.02}

/* steps */
.steps{margin-top:64px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.step{background:var(--bg-2);border:1px solid var(--line);border-radius:20px;padding:28px;display:flex;flex-direction:column;gap:20px}
.stage{height:150px;border-radius:14px;display:grid;place-items:center;background:radial-gradient(closest-side,rgba(84,104,245,.22),transparent),var(--bg)}
.key{width:76px;height:76px;border-radius:14px;background:var(--fg);color:var(--bg);display:flex;align-items:flex-end;padding:10px 12px;font-weight:600;font-size:20px;border-bottom:5px solid #B9C3FF;animation:press 2.4s var(--ease) infinite}
.mini-wave{display:flex;gap:6px;align-items:center;height:56px}
.mini-wave i{width:5px;height:100%;border-radius:3px;background:linear-gradient(180deg,#fff,var(--accent),var(--deep));animation:eq 1.1s ease-in-out infinite;animation-delay:calc(var(--k) * -90ms)}
.mini-field{width:82%;padding:12px 14px;border-radius:10px;background:var(--bg-2);border:1px solid var(--line-2);font-size:15px;white-space:nowrap;overflow:hidden}
.mini-field span{display:inline-block;overflow:hidden;vertical-align:bottom;max-width:0;animation:typein 5s steps(18) infinite}
.step .n{font-family:var(--mono);font-size:12px;color:var(--dim)}
.step h3{margin:6px 0 0;font-size:21px;font-weight:600;letter-spacing:-.01em}
.step p{margin:8px 0 0;color:var(--muted)}

/* privacy */
.privacy{position:relative;border:1px solid var(--line);border-radius:32px;overflow:hidden;background:radial-gradient(120% 90% at 100% 0%,rgba(84,104,245,.30),rgba(84,104,245,.06) 45%,transparent 75%),var(--bg-2);padding:clamp(28px,6vw,80px)}
.privacy-grid{display:flex;flex-wrap:wrap;gap:56px;align-items:center}
.privacy-copy{flex:1 1 400px;min-width:0}
.privacy-copy h2{margin:14px 0 0;font-size:clamp(38px,5.4vw,70px);line-height:1}
.privacy-copy p{margin:20px 0 0;color:var(--muted);font-size:18px;max-width:46ch}
.checks{list-style:none;margin:32px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.checks li{display:flex;gap:14px;align-items:flex-start;color:var(--muted)}
.checks svg{width:22px;height:22px;flex:none;margin-top:1px;stroke:var(--accent)}
.flow{flex:1 1 420px;min-width:0;background:rgba(11,14,20,.72);border:1px solid var(--line-2);border-radius:24px;padding:32px 24px}
/* Equal end columns keep "On your device" centred; the labels hang below the icons, so the
   wires and the box run through the icons' centres. */
.pipe{--node:72px;display:grid;grid-template-columns:var(--node) minmax(0,1fr) auto minmax(0,1fr) var(--node);align-items:center;gap:10px;padding-bottom:22px}
.node{position:relative;display:grid;place-items:center}
.node .lb{position:absolute;top:calc(100% + 6px);left:50%;transform:translateX(-50%);white-space:nowrap;font-size:12px;color:var(--muted)}
.node .ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--bg-3);border:1px solid var(--line-2)}
.node .ic svg{width:22px;height:22px;stroke:var(--fg)}
.mac{padding:18px 16px;border-radius:16px;border:1px solid rgba(123,140,255,.5);background:rgba(123,140,255,.08);box-shadow:0 0 30px -6px var(--glow);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ice);text-align:center;white-space:nowrap}
.wire{position:relative;height:2px;background:var(--line-2)}
.wire i{position:absolute;top:-3px;width:8px;height:8px;border-radius:50%;background:var(--ice);box-shadow:0 0 10px var(--accent);animation:flow 2.4s linear infinite;animation-delay:calc(var(--k) * -.8s)}

/* features */
.features{margin-top:56px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.features.two{grid-template-columns:repeat(2,minmax(0,1fr));max-width:960px;margin-inline:auto}
.feat{--x:50%;--y:50%;position:relative;overflow:hidden;background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:30px 28px;transition:border-color .3s,transform .4s var(--ease)}
.feat::before{content:"";position:absolute;inset:0;background:radial-gradient(260px circle at var(--x) var(--y),rgba(123,140,255,.18),transparent 70%);opacity:0;transition:opacity .3s}
.feat:hover{border-color:rgba(123,140,255,.35);transform:translateY(-3px)}
.feat:hover::before{opacity:1}
.feat svg{position:relative;width:26px;height:26px;stroke:var(--accent)}
.feat h3{position:relative;margin:18px 0 0;font-size:19px;font-weight:600}
.feat p{position:relative;margin:8px 0 0;color:var(--muted)}


/* faq */
.faq{display:flex;flex-wrap:wrap;gap:48px}
.faq-head{flex:1 1 300px;min-width:0}
.faq-head h2{margin:0;font-size:clamp(38px,5vw,64px);line-height:1.02}
.faq-list{flex:2 1 520px;min-width:0}
details{border-top:1px solid var(--line-2)}
details:last-child{border-bottom:1px solid var(--line-2)}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 8px 22px 0;font-size:19px;font-weight:500}
summary::-webkit-details-marker{display:none}
summary::after{content:"";width:16px;height:16px;flex:none;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23A6ADC2' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E") center/contain no-repeat;transition:transform .35s var(--ease)}
details[open] summary::after{transform:rotate(180deg)}
details.closing summary::after{transform:none}
.ans{padding-bottom:22px;color:var(--muted);max-width:62ch}
.ans p{margin:0}

/* nerd mode: the FAQ switch swaps summaries for measured figures */
.switch{display:inline-flex;align-items:center;gap:12px;margin-top:28px;font-size:15px;color:var(--fg);cursor:pointer}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.switch .knob{width:42px;height:24px;border-radius:999px;background:#353B4D;position:relative;transition:background .3s}
.switch .knob::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:left .3s var(--ease)}
.switch input:checked + .knob{background:var(--accent)}
.switch input:checked + .knob::after{left:21px}
.switch input:focus-visible + .knob{outline:2px solid var(--accent);outline-offset:3px}
.nerd{display:none;font-family:var(--mono);font-size:14px;line-height:1.6}
.nerd-on .nerd{display:block}
.nerd-on .plain{display:none}


/* footer */
footer{border-top:1px solid var(--line);margin-top:90px}
footer .wrap{display:flex;flex-wrap:wrap;gap:20px 48px;justify-content:space-between;align-items:center;padding-block:36px 48px}
footer .credits{width:100%;display:flex;flex-direction:column;gap:8px;font-size:13px;line-height:1.6;color:var(--dim)}
footer .credits p{margin:0;max-width:110ch}
footer .credits a{color:var(--muted);border-bottom:1px solid var(--line-2)}
footer .credits a:hover{color:var(--fg)}


/* scroll reveal: elements stay visible unless JS marks them as below the fold */
.reveal{transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:calc(var(--d,0) * 110ms)}
.reveal.pending{opacity:0;transform:translateY(28px)}

@keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-14px) rotate(-2.5deg)}}
@keyframes breathe{0%,100%{opacity:.85;transform:translateX(-50%) scale(1)}50%{opacity:1;transform:translateX(-50%) scale(1.06)}}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes blink{50%{opacity:0}}
@keyframes press{0%,60%,100%{transform:translateY(0);border-bottom-width:5px}20%,45%{transform:translateY(3px);border-bottom-width:2px}}
@keyframes eq{0%,100%{transform:scaleY(.25)}50%{transform:scaleY(1)}}
@keyframes typein{0%,15%{max-width:0}55%,90%{max-width:12em}100%{max-width:0}}
@keyframes flow{from{left:-4px;opacity:0}15%{opacity:1}85%{opacity:1}to{left:calc(100% - 4px);opacity:0}}
@keyframes drift{0%,100%{transform:translate(0,0)}50%{transform:translate(80px,-60px)}}
@keyframes dotp{0%,100%{opacity:.35;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}

@media (max-width:860px){
  .steps,.features,.features.two{grid-template-columns:minmax(0,1fr)}
  .nav{display:none}
}
@media (max-width:600px){
  section.block{padding-block:72px 24px}
  footer{margin-top:32px}
  footer .wrap{padding-block:24px 40px}
  .doc{padding:20px 18px 150px}
  .field{padding:9px 18px}
  .privacy{padding:24px 18px;border-radius:24px}
  .privacy-grid{gap:28px}
  .privacy-copy p{font-size:16px}
  .flow{padding:20px 14px}
  .pipe{--node:60px;gap:6px}
  .node .ic{width:34px;height:34px;border-radius:10px}
  .node .ic svg{width:18px;height:18px}
  .mac{padding:12px 8px;font-size:9.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal.pending{opacity:1;transform:none}
  .mini-field span{max-width:none}
  html{scroll-behavior:auto}
}

/* Changelog and Acknowledgements (scripts/web-pages.mjs) */
.page{max-width:860px}
.page h1{margin:0 0 10px;font-size:clamp(40px,6vw,72px);line-height:1.02}
.page .lede{margin:0 0 28px}
.page .entry{border-top:1px solid var(--line-2);padding:28px 0}
.page .entry h2{margin:0 0 6px;font-size:22px;font-weight:600}
.page .entry .by{font-weight:400;color:var(--muted)}
.page .entry .fine{margin:0 0 10px}
.page .entry p{margin:0;color:var(--muted);max-width:68ch}
.page ul{margin:12px 0 0;padding-left:20px;color:var(--muted)}
.page li+li{margin-top:6px}
.page table{width:100%;margin-top:18px;border-collapse:collapse;font-size:14px}
.page th,.page td{padding:10px 12px 10px 0;border-top:1px solid var(--line-2);text-align:left;vertical-align:top;color:var(--muted)}
.page th{font-family:var(--mono);font-size:12px;font-weight:500;color:var(--dim)}
.page td:first-child{color:var(--fg)}
.page .url{font-family:var(--mono);font-size:12px;overflow-wrap:anywhere}
.nav a[aria-current="page"]{color:var(--fg)}
@media (max-width:640px){
  .page table thead{display:none}
  .page table tr{display:block;border-top:1px solid var(--line-2);padding:10px 0}
  .page table td{display:inline-block;border:0;padding:2px 10px 2px 0}
  .page table td.url{display:block}
}