@font-face{font-family:"Newsreader";src:url(../fonts/Newsreader.woff2) format("woff2");font-weight:400 600;font-style:normal;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url(../fonts/IBMPlexSans.woff2) format("woff2");font-weight:400 600;font-style:normal;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url(../fonts/IBMPlexMono.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}

:root{
  --g1:#1B1E23;--g2:#23272E;--g3:#2C313A;
  --paper:#EEF0F1;--sheet:#F8F9FA;--ink:#1A1D21;--ink2:#4A525C;--rule:#CBD0D4;
  --on-dark:#E8EBEE;--on-dark2:#A9B1BB;--rule-dark:rgba(255,255,255,.13);
  --up:#C4573F;--down:#2E6E8E;--ns:#9A938A;
  --up-d:#E0765E;--down-d:#5BA3C4;--ns-d:#8C867D;
  --up-text:#A8432D;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:clip}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.012em;margin:0}
a{color:inherit}
code{font-family:var(--mono);font-size:.9em}
img,svg{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 32px}
.sr{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;padding:0}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--paper);color:var(--ink);padding:10px 16px;border-radius:6px;font-weight:500}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--down-d);outline-offset:3px}
.band-paper :focus-visible{outline-color:var(--down)}

.dark{background:var(--g1);color:var(--on-dark)}
.dark2{background:var(--g2);color:var(--on-dark)}
section{padding:112px 0}
h2{font-size:clamp(32px,3.8vw,48px);line-height:1.08}
.lede{font-size:19px;color:var(--ink2);max-width:36em;margin:18px 0 0}
.dark .lede,.dark2 .lede{color:var(--on-dark2)}

/* buttons and links */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:6px;font:500 16px/1 var(--sans);text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background .2s,border-color .2s}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:#fff}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-ink:hover{background:#000}
.link{text-decoration:underline;text-underline-offset:5px;text-decoration-color:currentColor;text-decoration-thickness:1px}
.dark .link{color:var(--on-dark)}

/* header + hero */
.top{display:flex;align-items:center;justify-content:space-between;padding:26px 0}
.brand{font:500 27px/1 var(--serif);text-decoration:none;letter-spacing:-.01em}
.top nav{display:flex;align-items:center;gap:28px;font-size:15px}
.top nav a{text-decoration:none;color:var(--on-dark2);padding:8px 0}
.top nav a:hover{color:var(--on-dark)}
.top nav .btn{min-height:40px;padding:0 18px;font-size:15px;border-color:var(--rule-dark);color:var(--on-dark)}
.top nav .btn:hover{background:rgba(255,255,255,.07)}
.hero-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:72px;align-items:center;padding:44px 0 112px}
.hero h1{font-size:clamp(40px,4.6vw,64px);line-height:1.03;text-wrap:balance}
.hero .lede{margin-top:24px}
.acts{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;margin-top:34px}
.clients{margin-top:44px;font-size:15px;color:var(--on-dark2);max-width:34em}
.clients b{font-weight:500;color:var(--on-dark)}
.hero-plot{margin:0}
.hero-plot svg{display:block;width:100%;height:auto}
.cap-dark{font-size:13px;color:var(--on-dark2);margin-top:10px}

/* data graphics */
.pt{fill-opacity:.8}
.pt-up{fill:var(--up)}.pt-down{fill:var(--down)}.pt-ns{fill:var(--ns);fill-opacity:.55}
.dark .pt-up,.chat-plot .pt-up{fill:var(--up-d)}
.dark .pt-down,.chat-plot .pt-down{fill:var(--down-d)}
.dark .pt-ns,.chat-plot .pt-ns{fill:var(--ns-d);fill-opacity:.5}
.ax{stroke:var(--ink);stroke-width:1;fill:none}
.grid{stroke:var(--rule);stroke-width:1;fill:none}
.thr{stroke:var(--ink2);stroke-width:1;stroke-dasharray:3 4;fill:none;opacity:.6}
.tick{font:400 11.5px var(--sans);fill:var(--ink2)}
.axl{font:400 12.5px var(--sans);fill:var(--ink2)}
.lbl{font:600 12.5px var(--sans);fill:var(--ink);paint-order:stroke;stroke:var(--sheet);stroke-width:4px;stroke-linejoin:round}
.lead-ln{stroke:var(--ink2);stroke-width:1;fill:none}
.dark .ax,.chat-plot .ax{stroke:var(--on-dark2)}
.dark .grid,.chat-plot .grid{stroke:rgba(255,255,255,.09)}
.dark .thr,.chat-plot .thr{stroke:var(--on-dark2)}
.dark .tick,.dark .axl,.chat-plot .tick,.chat-plot .axl{fill:var(--on-dark2)}
.dark .lbl,.chat-plot .lbl{fill:var(--on-dark);stroke:var(--g1)}
.dark .lead-ln,.chat-plot .lead-ln{stroke:var(--on-dark2)}
.pca-pt{fill-opacity:.9}
.pca-pt.c0{fill:var(--up)}.pca-pt.c1{fill:var(--down)}.pca-pt.c2{fill:var(--ns)}.pca-pt.c3{fill:var(--ink)}
.spot{stroke:var(--sheet);stroke-width:1.2}
/* start states exist only when JS is running; the settled state is the real one */
.js .viz .pt{opacity:0;transform:translate(var(--dx,0),var(--dy,0));transition:transform 1.7s cubic-bezier(.2,.7,.2,1),opacity .9s}
.js .viz.settled .pt{opacity:1;transform:none}
.js .viz .lbl,.js .viz .lead-ln{opacity:0;transition:opacity .9s 1.8s}
.js .viz.settled .lbl,.js .viz.settled .lead-ln{opacity:1}
.js .viz .sample{transform:translate(var(--sx,0),var(--sy,0));opacity:0;transition:transform 2.6s cubic-bezier(.55,0,.2,1),opacity .8s}
.js .viz.settled .sample{transform:translate(var(--fx,0),var(--fy,0));opacity:1}
/* narrow screens: fade the group once, never animate thousands of circles one by one */
.js .viz.viz-lite .pt{opacity:1;transform:none;transition:none}
.js .viz.viz-lite .pt-group{opacity:0;transition:opacity .5s ease}
.js .viz.viz-lite.settled .pt-group{opacity:1}
.legend{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:13px;color:var(--ink2);margin-top:12px}
.legend span{display:inline-flex;align-items:center;gap:7px}
.legend i{display:inline-block;width:9px;height:9px;border-radius:50%}
.fig .legend svg,.legend svg{display:inline-block;width:11px;height:11px;flex:none}
.legend i.up{background:var(--up)}.legend i.down{background:var(--down)}.legend i.ns{background:var(--ns)}
.dark .legend{color:var(--on-dark2)}
.dark .legend i.up{background:var(--up-d)}.dark .legend i.down{background:var(--down-d)}.dark .legend i.ns{background:var(--ns-d)}
.legend svg{width:11px;height:11px}
.fig-fallback{font-size:14px;color:var(--ink2)}

/* figures from a real run */
.fig-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap;margin-bottom:44px}
.ph-note{margin:0;font-size:13px;color:var(--up-text);border:1px solid currentColor;border-radius:4px;padding:5px 10px}
.sheet{background:var(--sheet);border:1px solid var(--rule);border-radius:4px;padding:40px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px 48px}
.fig{margin:0;min-width:0}
.fig svg{display:block;width:100%;height:auto}
.fig figcaption{font-size:14px;line-height:1.55;color:var(--ink2);margin-top:14px;border-top:1px solid var(--rule);padding-top:11px}
.fig figcaption b{color:var(--ink);font-weight:600}
.fig-wide{grid-column:1/-1}
.tbl-wrap{overflow-x:auto}
.tbl{width:100%;min-width:600px;border-collapse:collapse;font-size:15px;font-variant-numeric:tabular-nums}
.tbl th{font-weight:400;font-size:13px;color:var(--ink2);text-align:right;padding:6px 12px 8px;border-bottom:1px solid var(--ink)}
.tbl td{text-align:right;padding:9px 12px;border-bottom:1px solid var(--rule)}
.tbl th:first-child,.tbl td:first-child{text-align:left;padding-left:0}
.tbl td:first-child{font-weight:600}
.tbl td:first-child .gid{display:inline-block;font:400 12px/1.5 var(--mono);color:var(--ink2);font-weight:400}
.lfc{display:flex;align-items:center;justify-content:flex-end;gap:10px}
.lfc-track{display:block;flex:none;width:118px;height:6px}
.lfc-bar{display:block;height:6px;width:var(--w,0%);min-width:2px;border-radius:1px}
.lfc-bar.up{background:var(--up)}.lfc-bar.down{background:var(--down)}

/* chat */
.chat-head{max-width:760px;margin:0 auto 44px;text-align:center}
.chat-head .lede{margin-left:auto;margin-right:auto}
.chat{max-width:820px;margin:0 auto}
.tabs{display:none;align-items:flex-end;gap:30px;border-bottom:1px solid var(--rule-dark)}
.js .tabs{display:flex}
.tab{font:500 15px/1 var(--sans);color:var(--on-dark2);background:none;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;padding:14px 2px;min-height:44px;cursor:pointer}
.tab:hover{color:var(--on-dark)}
.tab[aria-selected="true"]{color:var(--on-dark);border-bottom-color:var(--on-dark)}
.tabs .tag{margin-left:auto;align-self:center;font:12.5px var(--sans);color:var(--on-dark2);border:1px solid var(--rule-dark);border-radius:4px;padding:2px 9px}
.cw{margin-top:22px;border-radius:10px;overflow:hidden;border:1px solid var(--rule-dark);transition:opacity .6s}
.cw[hidden]{display:none}
.cw.fade{opacity:0}
.cw-head{display:flex;align-items:center;gap:10px;min-height:46px;padding:0 18px}
.cw-title{font:500 14px var(--sans)}
.cw-body{padding:6px 22px 22px;min-height:var(--cw-h,0)}
.m{margin-top:18px;transition:opacity .6s,transform .6s}
.js .m.hid{opacity:0;transform:translateY(8px)}
.tl{transition:opacity .5s,transform .5s}
.js .tl.hid{opacity:0;transform:translateY(4px)}
.ut{position:relative;display:inline-block}
.ut-live{display:none;position:absolute;left:0;top:0;right:0;white-space:normal}
.typing .ut-ghost{color:transparent}
.typing .ut-live{display:block}
.caret{display:inline-block;width:2px;height:1.05em;background:currentColor;vertical-align:-2px;margin-left:1px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.chat-plot{margin-top:12px;max-width:380px;border-radius:8px;padding:10px 10px 4px}
.chat-plot svg{display:block;width:100%;height:auto}
.chat-cap{max-width:820px;margin:16px auto 0;font-size:14px;color:var(--on-dark2)}
.cw-input{margin:0 22px 22px;border-radius:14px;padding:13px 18px;min-height:52px;display:flex;align-items:center}
/* Claude style: warm dark surface, rounded user bubble, serif reading text, compact tool rows */
.cw-claude{background:#2A2724;color:#EAE5DC;border-color:rgba(234,229,220,.1)}
.cw-claude .cw-head{background:#2F2B27;border-bottom:1px solid rgba(234,229,220,.08)}
.cl-mark{width:16px;height:16px;border-radius:5px;background:#C8745A}
.cw-claude .cw-title{color:#D8D1C6}
.cl-user{display:flex;justify-content:flex-end}
.cl-bub{max-width:82%;background:#3A3631;color:#F1ECE3;border-radius:16px 16px 4px 16px;padding:11px 16px;font:15.5px/1.5 var(--sans)}
.cl-text{margin:0;font:400 17.5px/1.6 var(--serif);color:#EAE5DC}
.cl-tools{display:grid;gap:6px;margin-top:12px;justify-items:start}
.cl-tool{display:flex;align-items:center;gap:9px;width:100%;max-width:340px;border:1px solid rgba(234,229,220,.14);border-radius:8px;padding:5px 11px;font:13.5px var(--sans);color:#BFB6A9}
.cl-tool svg{width:14px;height:14px;flex:none}
.cl-tool .chev{margin-left:auto;width:12px;height:12px;opacity:.7}
.cw-claude .chat-plot{background:#211F1C;border:1px solid rgba(234,229,220,.1)}
.cw-claude .cw-input{background:#302C28;border:1px solid rgba(234,229,220,.14);color:#A99F92;font:15px var(--sans)}
/* Codex style: terminal panel, monospace, prompt chevron, dim tool-call lines, plain answer */
.cw-codex{background:#0D0F12;color:#D7DDE6;font-family:var(--mono);border-radius:8px;border-color:rgba(255,255,255,.12)}
.cw-codex .cw-head{background:#101318;border-bottom:1px solid rgba(255,255,255,.07);font:12.5px var(--mono);color:#8F9AAB;min-height:42px}
.cx-user{display:flex;gap:10px;background:#171B22;border-radius:5px;padding:10px 14px;font:13.5px/1.55 var(--mono);color:#EEF2F8}
.cx-prompt{color:#7FC8B8;font-weight:400;flex:none}
.cx-text{margin:0;font:13.5px/1.65 var(--mono);color:#D7DDE6}
.cx-tools{margin-top:8px}
.cx-tool{font:13px/1.8 var(--mono);color:#8F9AAB;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cx-dot{display:inline-block;width:1.5em}
.cw-codex .chat-plot{background:#0D0F12;border:1px solid rgba(255,255,255,.12);border-radius:4px}
.cw-codex .cw-input{background:#101318;border:1px solid rgba(255,255,255,.13);border-radius:5px;color:#8F9AAB;font:13.5px var(--mono);gap:10px}

/* promise rows */
.promise h2{margin-bottom:44px}
.rows{border-top:1px solid var(--ink)}
.row{display:grid;grid-template-columns:150px minmax(0,1.15fr) minmax(0,.85fr);gap:36px;padding:38px 0;border-bottom:1px solid var(--rule)}
.row .lab{font-size:15px;color:var(--ink2);padding-top:7px}
.row h3{font-size:clamp(25px,2.7vw,34px);line-height:1.14}
.row p{margin:12px 0 0;color:var(--ink2);max-width:34em}
.facts{display:flex;gap:40px;align-items:flex-start;flex-wrap:wrap}
.fact b{display:block;font:500 clamp(34px,4vw,52px)/1 var(--serif);letter-spacing:-.02em}
.fact span{display:block;font-size:14px;color:var(--ink2);margin-top:6px}
.files{margin:0;padding:0;list-style:none;font:14px/2 var(--mono);color:var(--ink2)}
.receipts{margin:0;padding:0;list-style:none;width:100%;font-size:15.5px}
.receipts li{display:flex;justify-content:space-between;gap:20px;padding:9px 0;border-bottom:1px dashed var(--rule)}
.receipts li:last-child{border-bottom:0}
.receipts b{font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap}

/* CloseQL */
.aql-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:72px;align-items:start}
.aql-text p{color:var(--on-dark2);margin:20px 0 0;max-width:30em}
.aql-text p b{color:var(--on-dark);font-weight:500}
.fn{font-size:13.5px;line-height:1.55}
/* the CloseQL asterisk: a real link to the note, sized to stay tappable */
sup a{color:inherit;text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;padding:3px 5px;margin:-3px -5px}
.bench{margin:0}
.bench h3{font:500 15px var(--sans);color:var(--on-dark);margin-bottom:6px;letter-spacing:0}
.key{display:flex;gap:22px;font-size:13.5px;color:var(--on-dark2);margin-bottom:22px}
.key span{display:inline-flex;align-items:center;gap:8px}
.key i{width:14px;height:8px;border-radius:1px;display:inline-block}
.key .d{background:var(--ns-d)}.key .a{background:var(--up-d)}
.grp{display:grid;grid-template-columns:54px minmax(0,1fr);gap:0 14px;align-items:center;padding:10px 0;border-top:1px solid var(--rule-dark)}
.grp .n{grid-row:1/3;font-size:14px;color:var(--on-dark2)}
.br{display:flex;align-items:center;gap:10px;height:24px}
.track{flex:1;min-width:0}
.bar{display:block;height:12px;border-radius:1px;min-width:0}
.bar.d{background:var(--ns-d)}.bar.a{background:var(--up-d)}
.br .val{font:500 13.5px var(--sans);color:var(--on-dark);min-width:3.2em;font-variant-numeric:tabular-nums}
.w0{width:0}.w3{width:6%}.w10{width:20%}.w12{width:24%}.w27{width:54%}.w29{width:58%}.w40{width:80%}
.js .bench:not(.in) .bar{transform:scaleX(0)}
.bar{transform-origin:left center;transition:transform 1.5s cubic-bezier(.2,.7,.2,1)}
.js .bench .g2 .bar{transition-delay:.12s}
.js .bench .g3 .bar{transition-delay:.24s}
.js .bench .g4 .bar{transition-delay:.36s}
.js .bench .g5 .bar{transition-delay:.48s}
.bench figcaption{font-size:13.5px;color:var(--on-dark2);margin-top:14px;border-top:1px solid var(--rule-dark);padding-top:11px;max-width:40em}
.bench .src{font-size:13px;color:var(--on-dark2);margin-top:10px;max-width:40em}
.bench .src code{font-family:var(--mono);font-size:12.5px;color:var(--on-dark)}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:72px;align-items:start}
.faq-list{border-bottom:1px solid var(--rule)}
details{border-top:1px solid var(--rule)}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:baseline;gap:20px;padding:22px 0;font:500 clamp(19px,2vw,23px)/1.25 var(--serif)}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font:300 26px/1 var(--sans);color:var(--ink2);flex:none}
details[open] summary::after{content:"\2212"}
details p{margin:0 0 24px;max-width:42em;color:var(--ink2)}
details a{color:var(--ink)}

/* final + footer */
.final{text-align:center;padding:120px 0}
.final h2{max-width:14em;margin:0 auto}
.final p{color:var(--on-dark2);font-size:19px;margin:16px 0 34px}
footer{padding:32px 0 44px;font-size:14px;color:var(--on-dark2);border-top:1px solid var(--rule-dark)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
footer a{text-decoration:underline;text-decoration-color:rgba(255,255,255,.3);text-underline-offset:4px;display:inline-block;padding:4px 3px}
footer a:hover{color:var(--on-dark)}

@media (max-width:980px){
  .hero-grid,.aql-grid,.faq-grid{grid-template-columns:minmax(0,1fr);gap:48px}
  .hero-grid{padding-bottom:84px}
  .sheet{grid-template-columns:minmax(0,1fr);padding:26px;gap:36px}
  .row{grid-template-columns:minmax(0,1fr);gap:14px;padding:30px 0}
  .row .lab{padding-top:0}
  section{padding:84px 0}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .top nav a:not(.btn){display:none}
  .cw-body{padding:4px 14px 16px}
  .cw-input{margin:0 14px 14px}
  .cl-bub{max-width:92%}
  .cl-text{font-size:16.5px}
  .cl-tool{padding:3px 10px;font-size:13px}
  .cl-tools{gap:5px}
  .chat-plot{max-width:330px}
  .cw-head{min-height:42px}
  .sheet{padding:20px 16px}
  .tabs{gap:22px}
  .acts{gap:16px 22px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .viz .pt,.js .viz .lbl,.js .viz .lead-ln{opacity:1!important;transform:none!important}
  .js .viz .sample{opacity:1!important;transform:translate(var(--fx,0),var(--fy,0))!important}
  .js .bench:not(.in) .bar{transform:none}
  .js .m.hid,.js .tl.hid{opacity:1;transform:none}
}
/* 404: dark band, no figures */
.nf{padding:44px 0 112px;max-width:36em}

@media (forced-colors:active){
  /* the figures carry their meaning in colour: keep the data marks, let everything else take system colours */
  .pt,.pca-pt,.lfc-bar,.legend i,.key i{forced-color-adjust:none}
}
@media print{
  :root{--paper:#fff}
  .dark,.dark2{background:#fff;color:#111}
  .top nav,.tabs,.cw-input,.skip{display:none!important}
  .js .viz .pt,.js .viz .lbl,.js .viz .lead-ln{opacity:1!important;transform:none!important}
  .js .viz .sample{opacity:1!important;transform:translate(var(--fx,0),var(--fy,0))!important}
  .js .m.hid,.js .tl.hid{opacity:1!important;transform:none!important}
  .js .bench:not(.in) .bar{transform:none!important}
  section{padding:32px 0}
  .cw[hidden]{display:none!important}
}