/* ProWAM project page.
   Palette follows the paper: sky blue = imagination, red = action. */
:root{
  --bg:#07080c;
  --bg-soft:#0d0f16;
  --panel:#12141d;
  --line:#22262f;
  --fg:#e9ecf2;
  --muted:#9aa3b2;
  --dim:#6b7484;
  --blue:#00a2e8;
  --blue-soft:#61bdde;
  --red:#dc1e1e;
  --red-soft:#f1a29f;
  --radius:16px;
  --maxw:1440px;
  --narrow:1200px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:21.5px; line-height:1.68; -webkit-font-smoothing:antialiased;
}
img{max-width:100%; height:auto; display:block}
a{color:var(--blue-soft); text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px}
.wrap.narrow{max-width:var(--narrow)}
.lead{max-width:1180px}

/* ---------- scroll progress ---------- */
.progress-rail{position:fixed; top:0; left:0; right:0; height:3px; z-index:100; background:transparent}
.progress-fill{height:100%; width:0;
  background:linear-gradient(90deg,var(--blue),var(--red));
  transition:width .08s linear}

/* ---------- hero ---------- */
.hero{position:relative; padding:104px 0 72px; overflow:hidden; text-align:center}
/* Percentage offsets here left a flat band above the glow; pin it in pixels
   and let it start well above the viewport instead. */
.hero-bg{position:absolute; top:-320px; left:-10%; right:-10%; height:calc(100% + 420px);
  background:
    radial-gradient(46% 34% at 24% 42%, rgba(0,162,232,.22), transparent 62%),
    radial-gradient(42% 32% at 78% 48%, rgba(220,30,30,.16), transparent 62%);
  filter:blur(18px); pointer-events:none}
.hero .wrap{position:relative}

.venue{font-size:15px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--dim); margin-bottom:22px}
.title{font-size:clamp(60px,11vw,116px); font-weight:800; letter-spacing:-.045em;
  line-height:.95; margin:0 0 14px}
.grad{background:linear-gradient(100deg,var(--blue) 0%,var(--blue-soft) 38%,var(--red-soft) 72%,var(--red) 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent}
.subtitle{font-size:clamp(21px,2.8vw,34px); font-weight:300; color:var(--muted);
  margin:0 auto 34px; max-width:1000px; letter-spacing:-.01em}

.authors{display:flex; flex-direction:column; align-items:center; gap:8px;
  font-size:25px; color:var(--fg); margin-bottom:12px}
.authors-row{display:flex; flex-wrap:wrap; justify-content:center; gap:8px 26px}
.authors a{color:inherit; text-decoration:none; border-bottom:1px solid transparent;
  transition:border-color .2s ease, color .2s ease}
.authors a:hover{color:#fff; border-bottom-color:var(--blue-soft); text-decoration:none}
.authors sup{color:var(--blue-soft); font-size:15.5px}
.affil{font-size:20px; color:var(--dim); line-height:1.8}
.affil sup{color:var(--blue-soft)}
.affil .note{font-size:15px; margin-top:4px}

.links{display:flex; flex-wrap:wrap; justify-content:center; gap:11px; margin-top:34px}
.btn{display:inline-flex; align-items:center; gap:7px; padding:11px 24px;
  border-radius:100px; border:1px solid var(--line); background:var(--panel);
  color:var(--fg); font-size:18.5px; font-weight:500;
  transition:transform .16s ease, border-color .16s ease, background .16s ease}
.btn:hover{transform:translateY(-2px); text-decoration:none}
/* The three buttons read as one blue -> red sweep: each takes a third of it. */
.links .btn{border-color:transparent; color:#fff}
.links .btn:nth-child(1){background:linear-gradient(100deg,#00a2e8,#4976a5)}
.links .btn:nth-child(2){background:linear-gradient(100deg,#4976a5,#934a61)}
.links .btn:nth-child(3){background:linear-gradient(100deg,#934a61,#dc1e1e)}
.links .btn:hover{filter:brightness(1.12); box-shadow:0 8px 24px rgba(0,0,0,.35)}
.btn.ghost{background:transparent}

/* ---------- teaser ---------- */
.teaser-band{padding:8px 0 56px}
.teaser-frame{border-radius:var(--radius); background:transparent}
.teaser{width:100%; height:auto; display:block; border-radius:9px}
.cap{text-align:center; color:var(--muted); font-size:20.5px; margin:22px auto 0; max-width:820px}
.cap b{color:var(--fg); font-weight:600}

/* ---------- stats ---------- */
.stats{padding:26px 0 68px}
.grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
.stats-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
.stat{background:rgba(18,20,29,.86); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 22px; text-align:center}
.stat .num{font-size:42px; font-weight:800; letter-spacing:-.03em;
  background:linear-gradient(100deg,var(--blue),var(--red-soft));
  -webkit-background-clip:text; background-clip:text; color:transparent;
  font-variant-numeric:tabular-nums}
.stat .lab{font-size:18px; color:var(--fg); margin-top:6px; font-weight:500}
.stat .lab span{display:block; font-size:16px; color:var(--dim); font-weight:400; margin-top:2px}

/* ---------- sections ---------- */
.sec{padding:86px 0; background:transparent}
main > section:last-child{padding-bottom:96px}
.sec.alt{background:rgba(13,15,22,.72); border-block:1px solid var(--line)}
.eyebrow{font-size:16px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--blue); font-weight:600; margin-bottom:14px}
h2{font-size:clamp(28px,4.2vw,42px); font-weight:700; letter-spacing:-.035em;
  line-height:1.16; margin:0 0 20px}
h2 em{font-style:normal; color:var(--blue-soft)}
h3{font-size:24px; font-weight:600; letter-spacing:-.02em; margin:0 0 10px}
h4{font-size:18px; font-weight:600; color:var(--muted); margin:0 0 14px;
  letter-spacing:.02em; text-transform:uppercase}
.lead{font-size:24px; color:var(--muted); margin:0 0 8px}
.lead b{color:var(--fg); font-weight:600}
p{margin:0 0 14px; color:var(--muted)}

.k{font-family:"JetBrains Mono",monospace; font-size:.9em; color:var(--blue-soft);
  background:rgba(0,162,232,.09); padding:1px 6px; border-radius:5px}

/* ---------- cards / grids ---------- */
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:34px}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:34px}
.card{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); padding:30px}
.tag{display:inline-block; font-size:14px; font-weight:600; letter-spacing:.09em;
  text-transform:uppercase; padding:5px 12px; border-radius:100px; margin-bottom:14px}
.tag.blue{background:rgba(0,162,232,.14); color:var(--blue-soft); border:1px solid rgba(0,162,232,.3)}
.tag.red{background:rgba(220,30,30,.13); color:var(--red-soft); border:1px solid rgba(220,30,30,.3)}

/* ---------- figures ---------- */
.fig{margin:34px 0 0; background:transparent; border:0; padding:0; overflow:hidden}
.fig.small{margin-top:0; padding:14px}
.fig img{border-radius:8px; margin:0 auto}
.fig figcaption{color:#4a5260; font-size:16px; margin-top:14px; line-height:1.6;
  padding:0 6px}
.fig figcaption b{color:#11141a}

/* ---------- tables ---------- */
.tbl{background:rgba(18,20,29,.88); border:1px solid var(--line); border-radius:var(--radius); padding:26px}
table{width:100%; border-collapse:collapse; font-size:19px}
thead th{text-align:right; font-weight:600; color:var(--dim); font-size:16px;
  text-transform:uppercase; letter-spacing:.06em; padding:0 0 12px;
  border-bottom:1px solid var(--line)}
thead th:first-child{text-align:left}
tbody td{padding:9px 0; border-bottom:1px solid rgba(34,38,47,.55);
  text-align:right; color:var(--muted); font-variant-numeric:tabular-nums}
tbody td:first-child{text-align:left; color:var(--fg)}
tbody tr:last-child td{border-bottom:none}
tbody tr.base td{color:var(--blue-soft)}
tbody tr.base td:first-child{color:var(--blue-soft)}
tbody tr.ours td{background:rgba(0,162,232,.07); color:var(--fg); font-weight:600}
tbody tr.ours td:first-child{color:#fff; border-left:2px solid var(--blue); padding-left:10px}
tbody tr.ours td b{color:var(--blue-soft)}

.tbl-note{font-size:16px; color:var(--dim); margin:14px 0 0; text-align:right}

.todo{list-style:none; padding:0; margin:22px 0 0; display:flex; flex-direction:column; gap:11px}
.todo li{position:relative; padding-left:34px; color:var(--muted); font-size:19px}
.todo li::before{content:"○"; position:absolute; left:6px; top:-1px; color:var(--dim); font-size:18px}
.todo li.done{color:var(--fg)}
.todo li.done::before{content:"✓"; color:var(--blue); font-weight:700}

/* ---------- emergence gallery ---------- */
.emerge-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:34px}
.emerge{margin:0; background:rgba(18,20,29,.84); border:1px solid var(--line);
  border-radius:var(--radius); padding:18px}
.emerge-head{display:flex; align-items:center; gap:9px; margin-bottom:12px}
.emerge-head .dom{font-size:15.5px; font-weight:600; color:var(--fg); letter-spacing:.02em}
.emerge-head .split{font-size:12.5px; font-weight:600; letter-spacing:.09em;
  text-transform:uppercase; padding:3px 9px; border-radius:100px}
.split.unseen{background:rgba(220,30,30,.14); color:var(--red-soft); border:1px solid rgba(220,30,30,.32)}
.split.seen{background:rgba(0,162,232,.13); color:var(--blue-soft); border:1px solid rgba(0,162,232,.3)}
.emerge-pair{display:grid; grid-template-columns:1fr 1fr; gap:10px}
.emerge-pair img{width:100%; border-radius:9px; background:#0d0f16}
.emerge-pair span{display:block; text-align:center; font-size:14px; color:var(--dim);
  margin-top:6px; letter-spacing:.04em}
.emerge-pair > div:first-child span{color:var(--blue-soft)}
.emerge figcaption{color:var(--muted); font-size:16px; margin-top:13px; line-height:1.55;
  font-style:italic}

.sp{display:inline-block; font-size:14px; font-weight:600; letter-spacing:.08em;
  text-transform:uppercase; padding:2px 8px; border-radius:100px; margin-right:6px}
.sp.seen{background:rgba(0,162,232,.13); color:var(--blue-soft); border:1px solid rgba(0,162,232,.28)}
.sp.unseen{background:rgba(220,30,30,.14); color:var(--red-soft); border:1px solid rgba(220,30,30,.32)}

/* ---------- closed-loop rollouts ---------- */
.roll-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:30px}
.roll{background:rgba(18,20,29,.84); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px 18px 14px}
.roll-hd{display:flex; align-items:center; gap:8px}
.roll-hd .dom{font-size:15.5px; font-weight:600; color:var(--fg); letter-spacing:.02em}
.roll-hd .kbadge{margin-left:auto}
.roll-task{font-size:17px; font-style:italic; color:var(--muted); margin:8px 0 12px; line-height:1.45;
  min-height:36px}
.roll-stage{display:grid; grid-template-columns:repeat(3,1fr); gap:8px}
.roll-stage figure{margin:0; text-align:center}
.roll-stage img{width:100%; aspect-ratio:var(--ar,1); object-fit:cover; display:block; border-radius:8px;
  border:2px solid #5a6474; background:#0d0f16}
.roll-stage .img img{border-color:var(--blue); box-shadow:0 0 16px rgba(0,162,232,.34);
  transition:opacity .18s ease}
.roll-stage .exec img{border-color:var(--red); box-shadow:0 0 14px rgba(220,30,30,.26)}
.roll-stage figcaption{font-size:12.5px; color:var(--dim); margin-top:6px; letter-spacing:.06em;
  text-transform:uppercase}
.roll-stage .img figcaption{color:var(--blue-soft)}
.roll-stage .img figcaption b{font-family:"JetBrains Mono",monospace; font-weight:500; text-transform:none;
  letter-spacing:0; margin-left:3px}
.roll-stage .exec figcaption{color:var(--red-soft)}
.roll-ctl{display:flex; align-items:center; gap:12px; margin-top:12px}
.roll-play{width:28px; height:28px; flex:0 0 auto; border-radius:50%; cursor:pointer; background:transparent;
  border:1px solid var(--line); color:var(--muted); font-size:11px; line-height:1; font-family:inherit}
.roll-play.paused{color:var(--blue-soft); border-color:rgba(0,162,232,.5)}
.roll-range{flex:1; -webkit-appearance:none; appearance:none; height:4px; border-radius:100px;
  background:linear-gradient(90deg,var(--blue),var(--red)); outline:none}
.roll-range:disabled{opacity:.3}
.roll-range::-webkit-slider-thumb{-webkit-appearance:none; width:15px; height:15px; border-radius:50%;
  background:var(--fg); cursor:pointer; border:3px solid var(--bg)}
.roll-range::-moz-range-thumb{width:15px; height:15px; border-radius:50%; background:var(--fg);
  cursor:pointer; border:3px solid var(--bg)}
.roll-reps{display:flex; align-items:center; gap:4px}
.roll-reps em{font-style:normal; font-size:12.5px; letter-spacing:.07em; text-transform:uppercase;
  color:var(--dim); margin-right:3px}
.roll-reps button{width:22px; height:22px; border-radius:6px; border:1px solid var(--line); background:transparent;
  color:var(--dim); font:500 12.5px "JetBrains Mono",monospace; cursor:pointer; padding:0; transition:all .2s ease}
.roll-reps button.on{color:var(--fg); border-color:var(--blue); background:rgba(0,162,232,.16)}
.kbadge{font-style:normal; font-family:"JetBrains Mono",monospace; font-size:14.5px;
  color:var(--blue-soft); border:1px solid rgba(0,162,232,.35); border-radius:100px; padding:2px 9px}
@media (max-width:900px){ .roll-grid{grid-template-columns:1fr} }
.cl-legend{display:flex; align-items:center; justify-content:center; gap:7px;
  font-size:15px; color:var(--dim); margin-top:34px}
.cl-legend .d{width:9px; height:9px; border-radius:50%; display:inline-block; margin-left:14px}
.cl-legend .d:first-child{margin-left:0}
.cl-legend .d.obs{background:#5a6474}
.cl-legend .d.imagine{background:var(--blue)}
.cl-legend .d.exec{background:var(--red)}

/* ---------- real-robot rollouts ---------- */
.real-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:30px}
.real-c{margin:0; background:rgba(18,20,29,.84); border:1px solid var(--line); border-radius:var(--radius);
  padding:10px 10px 12px}
.real-v{display:grid; grid-template-columns:1fr 1fr; gap:8px}
.real-cam{position:relative}
.real-cam video{width:100%; aspect-ratio:16/9; object-fit:cover; display:block; border-radius:8px;
  border:2px solid var(--red); background:#0d0f16}
.real-cam span{position:absolute; left:7px; top:7px; font-size:12.5px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--fg); background:rgba(7,8,12,.7); padding:2px 7px; border-radius:100px}
.real-c figcaption{display:flex; align-items:center; gap:10px; margin-top:10px; padding:0 4px}
.real-task{font-size:17.5px; font-style:italic; color:var(--muted)}
.real-x{margin-left:auto; font-style:normal; font:500 14.5px "JetBrains Mono",monospace; color:var(--dim);
  border:1px solid var(--line); border-radius:100px; padding:2px 8px}
@media (max-width:900px){ .real-grid{grid-template-columns:1fr} }

/* ---------- OOD imagination wall ---------- */
.ood-wall{display:grid; grid-template-columns:repeat(8,1fr); gap:10px; margin-top:30px}
.ood-t{margin:0; background:rgba(18,20,29,.84); border:1px solid var(--line); border-radius:12px;
  padding:6px 6px 8px; transition:border-color .3s ease, transform .3s ease}
.ood-t:hover{border-color:rgba(0,162,232,.55); transform:translateY(-2px)}
.ood-im{position:relative; border-radius:8px; overflow:hidden}
.ood-im img{width:100%; aspect-ratio:1; object-fit:cover; display:block; transition:opacity .2s ease}
.ood-im::after{content:""; position:absolute; inset:0; border-radius:8px; pointer-events:none;
  border:2px solid #5a6474; transition:border-color .3s ease, box-shadow .3s ease}
.ood-t.gen .ood-im::after{border-color:var(--blue); box-shadow:inset 0 0 18px rgba(0,162,232,.35)}
.ood-r{position:absolute; left:6px; top:6px; font:500 12.5px "JetBrains Mono",monospace; color:var(--fg);
  background:rgba(7,8,12,.72); padding:2px 7px; border-radius:100px}
.ood-t.gen .ood-r{color:var(--blue-soft)}
.ood-bar{position:absolute; left:0; right:0; bottom:0; height:3px; background:rgba(7,8,12,.6)}
.ood-bar b{display:block; height:100%; width:0; background:linear-gradient(90deg,var(--blue),var(--red));
  transition:width .35s ease}
.ood-t figcaption{display:flex; flex-direction:column; gap:3px; margin-top:8px; padding:0 2px}
.ood-t .dom{font-size:12px; letter-spacing:.09em; text-transform:uppercase; color:var(--dim); font-weight:600}
.ood-p{font-size:14.5px; color:var(--muted); line-height:1.35; display:-webkit-box; -webkit-line-clamp:2; line-clamp:2;
  -webkit-box-orient:vertical; overflow:hidden}
.ood-t:hover .ood-p{-webkit-line-clamp:unset; line-clamp:unset; color:var(--fg)}
.ood-note{text-align:center; font-size:15.5px; color:var(--dim); margin-top:20px}
@media (max-width:1100px){ .ood-wall{grid-template-columns:repeat(4,1fr)} }
@media (max-width:640px){ .ood-wall{grid-template-columns:repeat(2,1fr)} }

.num.up{color:var(--blue-soft)}
.lab b{color:var(--fg); font-weight:600}

.btn.disabled{cursor:default}
.btn i{font-style:normal; font-size:12.5px; letter-spacing:.07em; text-transform:uppercase;
  opacity:.7; margin-left:5px}


/* Fixed behind every section; bands go translucent so it reads through. */
.page-fx{position:fixed; inset:0; width:100%; height:100%; pointer-events:none; z-index:0}
header, main, footer, section{position:relative; z-index:1}



/* ---------- imagination spectrum ---------- */
.spec{display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:34px}
.spec-it{border:1px solid var(--line); border-radius:12px; padding:14px 14px 12px;
  background:rgba(18,20,29,.7); opacity:.62; transition:opacity .3s ease}
.spec-it:hover{opacity:1}
.spec-it.me{opacity:1; border-color:rgba(0,162,232,.55); background:rgba(0,162,232,.07);
  box-shadow:0 0 26px rgba(0,162,232,.13)}
.spec-fr{display:flex; gap:5px; height:52px; margin-bottom:11px}
.spec-fr img{width:52px; height:52px; object-fit:cover; border-radius:7px; border:1.5px solid #3c4552}
.spec-it.me .spec-fr img{border-color:var(--blue)}
.spec-fr.dense{gap:0}
.spec-fr.dense img{width:44px; height:52px; border-radius:4px; margin-right:-6px; border-color:#2c333d}
.spec-fr .ph{width:52px; height:52px; border:1.5px dashed #39414f; border-radius:7px; display:flex;
  align-items:center; justify-content:center; color:var(--dim); font-style:normal; font-size:21.5px}
.spec-it b{display:block; font-size:17px; color:var(--fg); font-weight:600}
.spec-it span{font-size:15px; color:var(--dim)}

/* ---------- stage switcher ---------- */
.stagebar{display:flex; gap:9px; flex-wrap:wrap; margin-top:30px}
.stagebar button{background:transparent; border:1px solid var(--line); color:var(--dim);
  font:inherit; font-size:16px; padding:9px 17px; border-radius:100px; cursor:pointer;
  transition:all .22s ease}
.stagebar button:hover{color:var(--muted); border-color:#39414f}
.stagebar button.on{color:var(--fg); border-color:var(--blue); background:rgba(0,162,232,.12)}
.stagebar button[data-stage="3"].on{border-color:var(--red); background:rgba(220,30,30,.1)}

/* ---------- architecture (mirrors the paper figure) ---------- */
.arch2-scroll{overflow-x:auto; margin-top:16px; border:1px solid var(--line); border-radius:var(--radius);
  background:rgba(18,20,29,.84)}
.arch2{display:grid; grid-template-columns:9fr 3fr; gap:14px; padding:26px 26px 20px; min-width:900px}
.a2-cols{display:grid; grid-template-columns:repeat(9,1fr); gap:10px; justify-items:center}
.a2-cols3{display:grid; grid-template-columns:repeat(3,1fr); gap:10px; justify-items:center}
.slot{position:relative; display:flex; flex-direction:column; align-items:center; width:100%;
  --c:var(--blue-soft)}
.slot[data-role="g"]{--c:var(--blue)} .slot[data-role="a"]{--c:var(--red)}
.slot[data-role="t"]{--c:#8fa37a} .slot[data-role="i"]{--c:#8b95a5}
.slot.up{padding-bottom:22px} .slot.dn{padding-top:22px}
.slot::before,.slot::after{content:""; position:absolute; left:50%; width:2px; height:22px;
  transform:translateX(-50%)}
.slot.up::before,.slot.up::after{bottom:0} .slot.dn::before,.slot.dn::after{top:0}
.slot::before{background:#2a313c}
.slot::after{background:linear-gradient(to top,transparent 0 30%,var(--c) 50%,transparent 70%);
  background-size:100% 300%; animation:flowUp 1.5s linear infinite}
@keyframes flowUp{from{background-position:0 0} to{background-position:0 100%}}
.tok{display:flex; align-items:center; justify-content:center; width:46px; height:46px;
  border-radius:9px; border:1.5px solid; font-family:"JetBrains Mono",monospace; font-size:17px}
.tok sub{font-size:11px; margin-left:1px}
.tok.x{color:#a9d8ee; border-color:rgba(97,189,222,.5); background:rgba(0,162,232,.09)}
.tok.g{color:#fff; border-color:var(--blue); background:rgba(0,162,232,.24); box-shadow:0 0 14px rgba(0,162,232,.35)}
.tok.a{color:var(--red-soft); border-color:rgba(220,30,30,.65); background:rgba(220,30,30,.13)}
.tok.t{color:#c3d1b2; border-color:#5f704f; background:rgba(120,150,90,.13)}
.tok.i{color:var(--fg); border-color:#5a6474; background:#181c25}
.tok.n{background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.13) 0 2px,transparent 2px 7px);
  box-shadow:none}
.a2-bar{position:relative; height:66px; border-radius:14px; border:1px solid; display:flex;
  align-items:center; justify-content:center; gap:12px}
.a2-bar.vid{border-color:rgba(0,162,232,.45);
  background:linear-gradient(90deg,rgba(0,162,232,.2),rgba(0,162,232,.08))}
.a2-bar.act{border-color:rgba(220,30,30,.45);
  background:linear-gradient(90deg,rgba(220,30,30,.16),rgba(220,30,30,.08))}
.a2-name{font-size:21.5px; font-weight:600; letter-spacing:-.01em; color:var(--fg)}
.badge{font-family:"JetBrains Mono",monospace; font-size:13px; color:var(--muted);
  border:1px solid rgba(255,255,255,.14); border-radius:100px; padding:3px 10px}
.badge sub{font-size:9.5px}
.kv{position:absolute; right:-44px; top:50%; transform:translateY(-50%); z-index:3;
  font-size:12.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--fg);
  padding:5px 12px; border-radius:100px; background:var(--bg);
  border:1px solid transparent; background-clip:padding-box; box-shadow:0 0 0 1px rgba(0,162,232,.6),
  0 0 18px rgba(0,162,232,.35); animation:kvPulse 1.6s ease-in-out infinite}
.kv::after{content:"\2192"; margin-left:6px; color:var(--red-soft)}
@keyframes kvPulse{50%{box-shadow:0 0 0 1px rgba(220,30,30,.7),0 0 22px rgba(220,30,30,.35)}}
.lbls{margin-top:6px}
.lbls span{font-size:14px; color:var(--dim); letter-spacing:.04em; text-align:center;
  white-space:nowrap; transition:opacity .4s ease}
.lbls .s3{grid-column:span 3; justify-self:stretch; border-top:1px solid #2a313c; padding-top:5px}
.arch2[data-stage="1"] [data-lr="a"], .arch2[data-stage="3"] [data-lr="x"]{opacity:.35}
.arch2[data-stage="3"] [data-lr="x"]::after{content:" \00b7  skipped at inference"; color:var(--red-soft)}
.arch2[data-stage="1"] [data-lr="a"]::after{content:" \00b7  not trained"; color:var(--dim)}

.frames{margin-top:22px; align-items:end}
.frames figure{margin:0; width:100%; text-align:center}
.frames img{width:100%; aspect-ratio:1; object-fit:cover; border-radius:8px; display:block;
  border:2px solid #3c4552}
.frames figure[data-role="i"] img{border-color:#5a6474}
.frames figure[data-role="x"] img{border-color:rgba(97,189,222,.5)}
.frames figure.g img{border-color:var(--blue); box-shadow:0 0 16px rgba(0,162,232,.32)}
.frames figcaption{font-family:"JetBrains Mono",monospace; font-size:12.5px; color:var(--dim); margin-top:5px}
.frames figure.g figcaption{color:var(--blue-soft)}
.frames q{align-self:center; font-size:13px; font-style:italic; color:var(--muted); line-height:1.35;
  text-align:center; quotes:"\201C" "\201D"}
.a2-axis{position:relative; height:2px; margin-top:12px; background:linear-gradient(90deg,var(--blue),var(--red))}
.a2-axis::after{content:""; position:absolute; right:-1px; top:-4px; border-left:8px solid var(--red);
  border-top:5px solid transparent; border-bottom:5px solid transparent}
.a2-axis span{position:absolute; right:0; top:8px; font-size:12px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--dim)}
.a2-key{font-size:15px; color:var(--dim); margin:24px 0 0}

/* parts a stage does not touch fade back */
.arch2 [data-role], .amask i{transition:opacity .4s ease, filter .4s ease}
.arch2 .off{opacity:.13; filter:grayscale(1)}
.arch2 .off::after{animation:none}

.amask{display:grid; grid-template-columns:24px repeat(4,1fr); gap:5px; margin:30px auto 0;
  max-width:200px; align-items:center}
.amask .h{font-family:"JetBrains Mono",monospace; font-size:13px; color:var(--muted); text-align:center}
.amask .h sub{font-size:9.5px}
.amask i{aspect-ratio:1; border-radius:5px; background:#141821; border:1px solid #232934}
.amask i.y.i{background:#4a5260; border-color:#5a6474}
.amask i.y.x{background:rgba(97,189,222,.45); border-color:rgba(97,189,222,.7)}
.amask i.y.g{background:rgba(0,162,232,.75); border-color:var(--blue); box-shadow:0 0 10px rgba(0,162,232,.35)}
.amask i.y.a{background:rgba(220,30,30,.6); border-color:var(--red)}
.amask i.cut{background:linear-gradient(to top right,transparent 45%,rgba(220,30,30,.85) 46% 54%,transparent 55%),#141821;
  border-color:rgba(220,30,30,.35)}
.amask-cap{font-size:13px; letter-spacing:.08em; text-transform:uppercase; color:var(--dim);
  text-align:center; margin:9px 0 0}

.stage-note{margin-top:18px; min-height:64px; max-width:1180px}
.stage-note h3{font-size:20.5px; margin:0 0 6px; color:var(--fg)}
.stage-note p{font-size:18px; margin:0}

@media (max-width:860px){ .spec{grid-template-columns:repeat(2,1fr)} }

/* ---------- citation ---------- */
.bib{position:relative; margin-top:18px; background:rgba(18,20,29,.84); border:1px solid var(--line);
  border-radius:var(--radius); padding:22px 24px; overflow-x:auto}
.bib pre{margin:0}
.bib code{font-family:"JetBrains Mono",monospace; font-size:15px; color:var(--muted); line-height:1.75; white-space:pre}
.bib-copy{position:absolute; top:12px; right:12px; background:transparent; border:1px solid var(--line);
  color:var(--dim); font:500 12.5px "JetBrains Mono",monospace; padding:4px 11px; border-radius:100px; cursor:pointer;
  transition:all .2s ease}
.bib-copy:hover{color:var(--fg); border-color:var(--blue-soft)}
.bib-copy.done{color:var(--blue-soft); border-color:var(--blue-soft)}

.foot{position:relative; z-index:1; border-top:1px solid var(--line); padding:26px 24px 40px;
  text-align:center}
.foot p{margin:0; font-size:13.5px; color:var(--dim)}
.foot a{color:var(--muted); text-decoration:none; border-bottom:1px solid var(--line)}
.foot a:hover{color:var(--fg); border-bottom-color:var(--blue-soft)}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0; transform:translateY(20px);
  transition:opacity .62s cubic-bezier(.22,1,.36,1), transform .62s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1; transform:none}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1; transform:none; transition:none}
  html{scroll-behavior:auto}
  }

/* ---------- responsive ---------- */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats-3{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .emerge-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{font-size:19px}
  .hero{padding:72px 0 52px}
  .grid-2{grid-template-columns:1fr}
        .sec{padding:62px 0}
  .tbl{padding:20px 16px}
  table{font-size:16px}
}