:root{
  /* Neutrals tinted toward the AiCare teal-ink hue (~205) — dark "instrument" surface */
  --bg:oklch(0.16 0.012 210); --bg-2:oklch(0.19 0.013 209); --surface:oklch(0.22 0.014 208); --surface-2:oklch(0.25 0.015 207);
  --line:oklch(0.30 0.015 206); --line-strong:oklch(0.38 0.018 205);
  --text:oklch(0.93 0.008 200); --muted:oklch(0.68 0.016 204); --muted-2:oklch(0.51 0.016 205);
  /* Brand teal carries the identity; green/red/amber are reserved for status only */
  --green:oklch(0.77 0.14 158); --cyan:oklch(0.75 0.095 198); --teal:oklch(0.83 0.06 194); --amber:oklch(0.80 0.12 78); --red:oklch(0.62 0.20 27);
  --radius:14px; --radius-sm:10px; --maxw:1080px;
  --s1:6px; --s2:12px; --s3:20px; --s4:32px; --s5:52px; --s6:84px;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Geist",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --disp:"Newsreader",Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text); font-family:var(--sans);
  font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--cyan); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 var(--s3)}

.eyebrow{
  font-family:var(--mono); font-size:12px; font-weight:500;
  letter-spacing:.22em; text-transform:uppercase; color:var(--muted);
}

/* ---------- HERO ---------- */
.hero{position:relative; padding:var(--s6) 0 var(--s5); overflow:hidden}
.hero-grid{
  position:absolute; inset:0; z-index:0; opacity:.5;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0/100% 38px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/38px 100%;
  -webkit-mask-image:radial-gradient(120% 80% at 72% 18%, #000 0%, transparent 72%);
          mask-image:radial-gradient(120% 80% at 72% 18%, #000 0%, transparent 72%);
}
.hero .wrap{position:relative; z-index:1}
.hero h1{
  font-family:var(--disp); font-weight:700; line-height:1.04;
  font-size:clamp(34px,6vw,62px); letter-spacing:-.02em; margin:var(--s3) 0 var(--s2);
}
.hero h1 .x{color:var(--muted-2); font-weight:500; padding:0 .12em}
.lede{font-size:clamp(16px,2.2vw,19px); color:var(--muted); max-width:44ch}
.meta-row{display:flex; gap:var(--s3); flex-wrap:wrap; align-items:center; margin-top:var(--s3)}
.pill{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.08em; text-transform:uppercase;
  padding:5px 11px; border-radius:999px; border:1px solid var(--line-strong); color:var(--muted);
  display:inline-flex; gap:7px; align-items:center;
}
.pill .dot{width:7px; height:7px; border-radius:50%; background:var(--amber); box-shadow:0 0 8px var(--amber)}

/* ---------- READOUT ---------- */
.readout{
  margin-top:var(--s5); border:1px solid var(--line); border-radius:var(--radius);
  background:linear-gradient(180deg,var(--surface),var(--bg-2));
  display:grid; grid-template-columns:1.5fr 1fr 1fr; overflow:hidden;
}
.ro-cell{padding:var(--s3) var(--s3); border-right:1px solid var(--line)}
.ro-cell:last-child{border-right:none}
.ro-label{font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted-2)}
.ro-big{font-family:var(--disp); font-weight:700; font-size:clamp(28px,4vw,40px); letter-spacing:-.01em; margin-top:8px}
.ro-big.green{color:var(--green)}
.ro-sub{font-family:var(--mono); font-size:12.5px; color:var(--muted); margin-top:6px}
.chain{display:flex; align-items:baseline; gap:9px; flex-wrap:wrap; margin-top:10px; font-family:var(--mono)}
.chain .step{font-size:13px; color:var(--muted-2)}
.chain .step b{color:var(--muted); font-weight:500}
.chain .arrow{color:var(--line-strong)}
.chain .final{font-size:clamp(26px,3.6vw,34px); font-family:var(--disp); font-weight:700; color:var(--cyan); letter-spacing:-.01em}

/* ---------- SECTION SHELL ---------- */
section.block{padding:var(--s5) 0; border-top:1px solid var(--line)}
.sec-head{display:flex; align-items:baseline; justify-content:space-between; gap:var(--s3); margin-bottom:var(--s4); flex-wrap:wrap}
.sec-head h2{font-family:var(--disp); font-weight:600; font-size:clamp(22px,3vw,30px); letter-spacing:-.01em}
.sec-head .count{font-family:var(--mono); font-size:12px; color:var(--muted-2); letter-spacing:.1em}

/* ---------- VIDEO CARDS ---------- */
.cards{display:flex; flex-direction:column; gap:var(--s4)}
.card{
  display:grid; grid-template-columns:minmax(0,1.45fr) minmax(0,1fr); gap:var(--s4);
  align-items:start; opacity:0; transform:translateY(14px);
  transition:opacity .6s ease, transform .6s ease;
}
.card.in{opacity:1; transform:none}
.player{
  position:relative; aspect-ratio:16/9; border-radius:var(--radius); overflow:hidden;
  background:var(--bg-2); border:1px solid var(--line);
}
.player video, .player iframe{width:100%; height:100%; display:block; border:0; background:#000}
.player img{width:100%; height:100%; display:block; object-fit:cover}
.player-fallback{
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:10px; text-align:center; padding:var(--s3);
  background:
    radial-gradient(60% 60% at 50% 42%, color-mix(in srgb,var(--cyan) 9%,transparent), transparent 70%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0/100% 26px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/26px 100%;
}
.player-fallback svg{opacity:.8}
.player-fallback .fb-t{font-family:var(--mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted)}
.player-fallback .fb-s{font-family:var(--mono); font-size:11px; color:var(--muted-2); word-break:break-all; max-width:90%}

.card-body{padding-top:2px}
.card-meta{font-family:var(--mono); font-size:12px; color:var(--muted-2); letter-spacing:.08em; display:flex; align-items:center; gap:10px; margin-bottom:10px}
.latest{
  font-family:var(--mono); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--green); border:1px solid color-mix(in srgb, var(--green) 45%, transparent);
  background:color-mix(in srgb, var(--green) 12%, transparent); padding:3px 8px; border-radius:999px;
}
.card-body h3{font-family:var(--disp); font-weight:600; font-size:21px; letter-spacing:-.01em; margin-bottom:10px; line-height:1.25}
.card-body p{color:var(--muted); font-size:15px}
.concepts{margin-top:16px; border-top:1px solid var(--line); padding-top:14px; display:flex; flex-direction:column; gap:8px; list-style:none}
.concept{display:grid; grid-template-columns:max-content 1fr; gap:0 12px; align-items:baseline}
.concept dt{font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--cyan); white-space:nowrap}
.concept dd{font-size:13px; line-height:1.5; color:var(--muted-2)}

/* ---------- METHOD + TABLE ---------- */
.prose{max-width:68ch; color:var(--muted)}
.prose p{margin-bottom:var(--s2)}
.prose strong{color:var(--text); font-weight:600}
.table-scroll{margin-top:var(--s4); overflow-x:auto}
.table-scroll table{margin-top:0}
table{width:100%; border-collapse:collapse; margin-top:var(--s4); font-size:14.5px; min-width:480px}
caption{caption-side:bottom; text-align:left; font-family:var(--mono); font-size:11.5px; color:var(--muted-2); padding-top:12px; letter-spacing:.04em}
th,td{padding:13px 14px; text-align:left; border-bottom:1px solid var(--line)}
thead th{font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:.12em; color:var(--muted-2); font-weight:500}
tbody td{font-family:var(--mono); color:var(--muted)}
tbody td:first-child{color:var(--text); font-family:var(--sans)}
tbody tr:last-child td{border-bottom:none; background:color-mix(in srgb,var(--surface) 60%,transparent); color:var(--text)}
tbody tr:last-child td:first-child{font-weight:600}

/* ---------- BLOCKERS ---------- */
.blocker-list{list-style:none; display:flex; flex-direction:column; gap:var(--s4)}
.blocker{position:relative; padding-left:var(--s3)}
.blocker::before{content:""; position:absolute; left:0; top:7px; width:8px; height:8px; border-radius:2px; background:var(--red)}
.blocker-title{font-family:var(--disp); font-weight:600; font-size:17px; color:var(--text); margin-bottom:8px}
.blocker-body{font-size:15px; line-height:1.6; color:var(--muted); max-width:68ch}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line); padding:var(--s4) 0; color:var(--muted-2); font-family:var(--mono); font-size:12px; letter-spacing:.04em}
footer .wrap{display:flex; justify-content:space-between; gap:var(--s3); flex-wrap:wrap}

/* ---------- EXPERIMENT LOG (timeline) ---------- */
#experiments-list{position:relative; display:flex; flex-direction:column; gap:var(--s5)}
#experiments-list::before{content:""; position:absolute; left:6px; top:10px; bottom:10px; width:1px; background:var(--line)}
.exp{position:relative; display:grid; grid-template-columns:13px 1fr; gap:var(--s4); align-items:start;
     opacity:0; transform:translateY(14px); transition:opacity .6s ease, transform .6s ease}
.exp.in{opacity:1; transform:none}
.exp-content{min-width:0}
.exp-rail{position:relative; padding-top:5px}
.exp-node{display:block; width:13px; height:13px; border-radius:50%; background:var(--bg); border:2px solid var(--muted-2); position:relative; z-index:1}
.exp-node.st-win{border-color:var(--green); background:var(--green); box-shadow:0 0 0 4px color-mix(in srgb,var(--green) 16%,transparent)}
.exp-node.st-fail{border-color:var(--red); background:var(--red); box-shadow:0 0 0 4px color-mix(in srgb,var(--red) 16%,transparent)}
.exp-node.st-pivot{border-color:var(--cyan); background:var(--cyan); box-shadow:0 0 0 4px color-mix(in srgb,var(--cyan) 16%,transparent)}
.exp-head{display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:10px}
.exp-n{font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted-2)}
.exp-head h3{font-family:var(--disp); font-weight:600; font-size:20px; letter-spacing:-.01em; line-height:1.2}
.chip{font-family:var(--mono); font-size:11px; letter-spacing:.03em; padding:3px 10px; border-radius:999px; white-space:nowrap; margin-left:auto}
.chip.st-win{color:var(--green); border:1px solid color-mix(in srgb,var(--green) 42%,transparent); background:color-mix(in srgb,var(--green) 12%,transparent)}
.chip.st-fail{color:var(--red); border:1px solid color-mix(in srgb,var(--red) 42%,transparent); background:color-mix(in srgb,var(--red) 12%,transparent)}
.chip.st-pivot{color:var(--cyan); border:1px solid color-mix(in srgb,var(--cyan) 42%,transparent); background:color-mix(in srgb,var(--cyan) 12%,transparent)}
.exp-content > p{color:var(--muted); font-size:15px; max-width:68ch}
.shots{display:grid; grid-template-columns:repeat(auto-fill,minmax(210px,1fr)); gap:var(--s3); margin-top:var(--s3)}
.shot{margin:0}
.shot-frame{position:relative; aspect-ratio:16/10; border:1px solid var(--line); border-radius:var(--radius-sm); overflow:hidden; background:var(--bg-2)}
.shot-frame img{width:100%; height:100%; object-fit:cover; display:block}
.shot figcaption{font-family:var(--mono); font-size:11.5px; color:var(--muted-2); line-height:1.45; margin-top:9px}
.img-fallback{position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:9px; text-align:center; padding:14px;
  background:
    radial-gradient(60% 60% at 50% 40%, color-mix(in srgb,var(--cyan) 8%,transparent), transparent 70%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0/100% 22px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/22px 100%;}
.img-fallback .fb-t{font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted)}
.img-fallback .fb-s{font-family:var(--mono); font-size:10.5px; color:var(--muted-2); word-break:break-all; max-width:92%}

/* ---------- DEMO TABS ---------- */
.demo-tabs {
  display: flex; gap: 2px; margin-bottom: var(--s4);
  border-bottom: 1px solid var(--line);
}
.demo-tab {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted-2); background: none; border: none;
  padding: 10px 20px; cursor: pointer; position: relative;
  transition: color 180ms;
}
.demo-tab::after {
  content: ""; position: absolute; bottom: -1px; left: 0; right: 0; height: 2px;
  background: transparent; transition: background 180ms;
}
.demo-tab:hover { color: var(--muted); }
.demo-tab.active { color: var(--teal); }
.demo-tab.active::after { background: var(--teal); }

/* ---------- LIGHTBOX ---------- */
img.zoomable { cursor: zoom-in; }
#lightbox {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: rgba(0,0,0,.88); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  align-items: center; justify-content: center; flex-direction: column;
  padding: var(--s4);
}
#lightbox.open { display: flex; }
.lb-img {
  max-width: min(92vw, 1200px); max-height: 80vh;
  object-fit: contain; border-radius: var(--radius-sm);
  box-shadow: 0 32px 80px rgba(0,0,0,.6);
}
.lb-cap {
  margin-top: var(--s2); font-family: var(--mono); font-size: 12px;
  color: var(--muted); text-align: center; max-width: 72ch; line-height: 1.5;
}
.lb-close {
  position: fixed; top: var(--s3); right: var(--s3);
  background: none; border: 1px solid var(--line-strong); color: var(--muted);
  font-size: 22px; line-height: 1; width: 38px; height: 38px;
  border-radius: var(--radius-sm); cursor: pointer;
  transition: border-color 150ms, color 150ms;
}
.lb-close:hover { border-color: var(--text); color: var(--text); }

@media (max-width:760px){
  .readout{grid-template-columns:1fr; }
  .ro-cell{border-right:none; border-bottom:1px solid var(--line)}
  .ro-cell:last-child{border-bottom:none}
  .card{grid-template-columns:1fr; gap:var(--s3)}
  .hero{padding-top:var(--s5)}
  .exp{grid-template-columns:1fr; gap:var(--s2)}
  .exp-rail{display:none}
  #experiments-list::before{display:none}
  .chip{margin-left:0; white-space:normal}
}
@media (prefers-reduced-motion:reduce){
  .card, .exp{opacity:1; transform:none; transition:none}
  html{scroll-behavior:auto}
}