:root{
  --ink:#0d1017;
  --text:#14181f;
  --muted:#5b616e;
  --line:#e4e6ea;
  --paper:#ffffff;
  --paper2:#f5f6f8;
  --accent:#2540e6;
  --accent-2:#1a2fb0;
  --on-dark:#f4f5f7;
  --on-dark-muted:#a9afbd;
  --max:1080px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;color:var(--text);background:var(--paper);
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:18px;line-height:1.62;-webkit-font-smoothing:antialiased;
}
a{color:var(--accent);}
h1,h2,h3{line-height:1.12;letter-spacing:-0.02em;font-weight:750;margin:0 0 .5em;}
h1{font-size:clamp(2.2rem,5.4vw,3.6rem);}
h2{font-size:clamp(1.6rem,3.4vw,2.3rem);}
h3{font-size:1.3rem;letter-spacing:-0.01em;}
p{margin:0 0 1em;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;}
.narrow{max-width:64ch;}
.muted{color:var(--muted);}

/* header */
header.site{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.bar{display:flex;align-items:center;justify-content:space-between;height:66px;}
.brand{font-weight:800;letter-spacing:-.02em;font-size:1.1rem;text-decoration:none;color:var(--ink);}

.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;
  padding:.72em 1.2em;border-radius:7px;font-weight:600;font-size:.98rem;
  border:1px solid var(--accent);transition:background .15s;}
.btn:hover{background:var(--accent-2);color:#fff;}
.btn.small{padding:.5em .95em;font-size:.9rem;}
.btn.ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn.ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.textlink{color:#fff;text-decoration:none;font-weight:600;border-bottom:1px solid rgba(255,255,255,.4);
  padding-bottom:2px;}
.textlink:hover{border-color:#fff;}

section{padding:84px 0;}
section + section{border-top:1px solid var(--line);}

/* hero (dark) */
.hero{background:var(--ink);color:var(--on-dark);padding:104px 0 92px;border:0;}
.hero h1{color:#fff;max-width:none;}
.hero h1 .hl-light{font-weight:400;}
.hero .lede{font-size:clamp(1.1rem,1.7vw,1.3rem);color:var(--on-dark-muted);max-width:54ch;margin-top:6px;}
.actions{display:flex;gap:22px;flex-wrap:wrap;margin-top:34px;align-items:center;}

/* body type */
.lede{font-size:clamp(1.05rem,1.6vw,1.2rem);color:var(--muted);}

/* shared two-column layout (method + demos header + demo rows share one gutter) */
.method-cols,.demos-head,.demo{grid-template-columns:1.02fr 1fr;gap:48px;}

/* method two columns */
.method-cols{display:grid;align-items:center;}
.method-copy p:last-child{margin-bottom:0;}

/* roomier 1/3 copy, 2/3 graphic (automation section) */
.auto-cols{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:center;}

/* click-to-expand */
.zoomable{cursor:zoom-in;}

/* diagrams */
figure{margin:0;}
figure.diagram{margin-top:40px;}
figure.diagram.method-fig{margin-top:0;}
figure.diagram img{display:block;width:100%;max-width:600px;margin:0 auto;height:auto;}
figure.diagram.method-fig img{max-width:100%;}
figure.diagram.wide img{max-width:900px;}
figcaption{font-size:.9rem;color:var(--muted);text-align:center;margin-top:16px;max-width:60ch;
  margin-left:auto;margin-right:auto;}

/* demos as editorial rows */
.demos-head{display:grid;align-items:start;margin-bottom:40px;}
.demos-head h2{margin:0;}
.demos-intro{margin:0;font-size:1.05rem;}
.demo{display:grid;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);}
.demo:first-of-type{border-top:2px solid var(--ink);}
.demo .media{order:1;}
.demo .content{order:2;}
.demo:nth-child(even) .media{order:2;}
.demo:nth-child(even) .content{order:1;}
.slot{aspect-ratio:4/3;background:var(--paper2);border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:var(--muted);gap:12px;border-radius:4px;}
.slot .play{width:54px;height:54px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;}
.slot .play::after{content:"";border-left:16px solid var(--accent);
  border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px;}
.slot small{font-weight:600;letter-spacing:.02em;font-size:.78rem;}
.slot.video{padding:0;background:#000;overflow:hidden;}
.slot.video video{width:100%;height:100%;object-fit:cover;display:block;}
.slot.soon{border-style:dashed;}
.slot.soon small{text-transform:none;letter-spacing:0;font-size:.9rem;color:var(--muted);font-weight:500;}
.demo h3{margin-bottom:.35em;}
.demo .role{color:var(--muted);font-weight:600;}
.hood{margin-top:14px;font-size:.94rem;color:var(--muted);}
.hood b{color:var(--text);font-weight:600;}

/* try-it-yourself panel */
.trydemo{margin-top:44px;background:var(--paper2);border:1px solid var(--line);border-radius:8px;
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;}
.trydemo .t{max-width:56ch;}
.trydemo h3{margin:0 0 .3em;}
.trydemo p{margin:0;color:var(--muted);font-size:.98rem;}
.trydemo .note{margin-top:.55em;font-size:.85rem;}
.trydemo-actions{display:flex;gap:12px;flex-wrap:wrap;}
.trydemo-actions .btn{white-space:nowrap;}
.btn.secondary{background:transparent;color:var(--accent);border-color:var(--accent);}
.btn.secondary:hover{background:var(--accent);color:#fff;}

/* result */
.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:8px 0 34px;}
.stat{padding:0 24px;}
.stat + .stat{border-left:1px solid var(--line);}
.stat:first-child{padding-left:0;}
.stat:last-child{padding-right:0;}
.stat .n{font-size:2.1rem;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1;}
.stat .l{font-size:.9rem;color:var(--muted);margin-top:8px;max-width:16ch;}
.pull{font-size:clamp(1.3rem,2.3vw,1.65rem);line-height:1.4;font-weight:600;letter-spacing:-.01em;
  color:var(--ink);margin:30px 3rem 14px 3rem;}
.pull-cite{color:var(--muted);font-size:.95rem;margin-left:3rem;}

/* CTA (dark) */
.cta-band{background:var(--ink);color:var(--on-dark);text-align:center;}
.cta-band h2{color:#fff;}
.cta-band p{color:var(--on-dark-muted);max-width:54ch;margin-left:auto;margin-right:auto;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:24px;}

footer.site{background:var(--paper2);padding:52px 0;color:var(--muted);font-size:.94rem;
  border-top:1px solid var(--line);}
footer.site a{color:var(--accent);text-decoration:none;}
footer.site a:hover{text-decoration:underline;}
.foot-row{display:flex;gap:10px 24px;flex-wrap:wrap;margin-top:12px;}

/* lightbox */
#lightbox{position:fixed;inset:0;background:rgba(13,16,23,.9);display:none;
  align-items:center;justify-content:center;padding:24px;z-index:100;cursor:zoom-out;}
#lightbox.open{display:flex;}
#lightbox img{max-width:min(1200px,96vw);max-height:92vh;width:100%;height:auto;
  background:#fff;border-radius:8px;padding:24px;}
#lightbox .close{position:fixed;top:18px;right:22px;color:#fff;font-size:2rem;line-height:1;
  background:none;border:0;cursor:pointer;font-weight:300;}

/* ---- case study article ---- */
.article-hero h1{font-size:clamp(1.9rem,4.2vw,3rem);max-width:24ch;}
.backlink{display:inline-block;margin-bottom:20px;font-size:.95rem;}
.article-hero .lede{color:var(--on-dark-muted);max-width:60ch;}
.prose{padding:72px 0;}
.prose .lead{font-size:clamp(1.1rem,1.6vw,1.28rem);color:var(--text);}
.prose h2{margin-top:1.9em;}
.prose h2:first-of-type{margin-top:0;}
.prose figure.diagram{margin:44px auto;}
.callout{background:var(--paper2);border:1px solid var(--line);border-radius:8px;
  padding:26px 30px;margin:8px 0 1em;}
.callout h2{margin-top:0;}
.callout p:last-child{margin-bottom:0;}

@media (max-width:760px){
  body{font-size:17px;}
  section{padding:60px 0;}
  .hero{padding:76px 0 64px;}
  .method-cols,.auto-cols{grid-template-columns:1fr;gap:26px;}
  .method-copy{order:2;}
  .method-fig{order:1;}
  .demos-head{grid-template-columns:1fr;gap:16px;margin-bottom:24px;}
  .demo{grid-template-columns:1fr;gap:24px;padding:40px 0;}
  .pull{margin-left:1.25rem;margin-right:1.25rem;}
  .pull-cite{margin-left:1.25rem;}
  .demo .media,.demo .content,
  .demo:nth-child(even) .media,.demo:nth-child(even) .content{order:0;}
  .stat{padding:0 12px;}
  .bar .btn{display:none;}
  .prose{padding:52px 0;}
  .callout{padding:22px 22px;}
}