/* ============================================================
   BENCH2DEX — Editorial Evidence Atlas design system
   Academic editorial restraint × scientific-instrument precision
   ============================================================ */
:root{
  --paper:#F7F6F2;
  --paper-deep:#EEEDE8;
  --surface:#FFFEFB;
  --ink-strong:#181C1B;
  --bg:var(--paper);
  --bg-2:var(--paper-deep);
  --bg-3:var(--surface);
  --panel:var(--surface);
  --panel-2:#F0EFEA;
  --bone:var(--ink-strong);
  --ink:#FFFFFF;
  --metal:#4E5963;
  --metal-dim:#69727A;
  --line:#E1DED5;
  --line-strong:#D2CEC3;
  --cyan:#294F92;          /* primary accent / invariance */
  --copper:#B44827;        /* sparse editorial emphasis */
  --amber:#985807;         /* equivariance data semantics */
  --coral:#C9584A;
  --yellow:#C99A2E;
  --green:#247753;         /* success */
  --brick:#A9473D;         /* failure */
  --violet:#6B53A7;        /* full-channel data semantics only */
  --text:#2D312F;
  --text-dim:#515954;
  --text-faint:#636862;
  --scrim:rgba(24,28,27,.82);
  --on-scrim:#FFFFFF;
  --display:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --body:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  --maxw:1240px;
  --measure:100ch;
  --rail:88px;
  --r-sm:4px; --r:6px; --r-lg:10px; --r-xl:14px;
  --evidence-radius:10px;
  --frame-border:2px solid var(--line-strong);
  --evidence-shadow:0 1px 2px rgba(24,28,27,.06), 0 6px 14px -6px rgba(24,28,27,.10), 0 20px 48px -16px rgba(24,28,27,.22);
  --shadow:var(--evidence-shadow);
  --duration-fast:140ms;
  --duration-medium:220ms;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%; scroll-padding-top:72px; overscroll-behavior-y:none;}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:var(--body); font-size:16px; line-height:1.6;
  font-feature-settings:"ss01","cv11"; -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  text-rendering:optimizeLegibility;
  overscroll-behavior-y:none;
}
img{max-width:100%; display:block;}
::selection{background:rgba(41,79,146,.18); color:var(--bone);}
::-moz-selection{background:rgba(41,79,146,.18); color:var(--bone);}
a{color:var(--metal); text-decoration:none; transition:color var(--duration-fast);}
a:hover{color:var(--bone);}
h1,h2,h3,h4{font-family:var(--display); font-weight:650; color:var(--bone); margin:0 0 .4em; line-height:1.08; letter-spacing:-.025em; text-wrap:balance;}
.mono{font-family:var(--mono); font-feature-settings:"tnum"; font-variant-numeric:tabular-nums;}
.eyebrow{font-family:var(--mono); font-size:11.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--cyan);}
.section{position:relative; padding:clamp(38px,4.2vw,56px) 0; border-top:1px solid var(--line);}
.container{max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,4vw,56px);}
.lead{font-size:clamp(17px,1.45vw,20px); color:var(--text); max-width:var(--measure); line-height:1.62; text-align:justify; text-justify:inter-word;}
.dim{color:var(--text-dim);}
.section-head{
  max-width:none;
  margin:0 0 clamp(16px,2vw,24px);
}
/* The section name (eyebrow) is the big bold title; the h2 tagline is a
   small subtitle that trails it on the same line. */
.section-head > .eyebrow{
  display:inline; margin:0; padding-right:14px;
  font-family:var(--display); font-size:clamp(26px,2.8vw,34px); font-weight:700;
  letter-spacing:-.025em; text-transform:none; color:var(--bone); line-height:1.15;
}
.section-head h2{
  display:inline; margin:0;
  font-family:var(--body); font-size:clamp(15px,1.1vw,17px); font-weight:400;
  letter-spacing:0; color:var(--text-dim); line-height:1.5;
}
.section-head > .lead{margin:10px 0 0; color:var(--text);}

/* ---------- Editorial evidence rhythm ---------- */
.evidence-band::before{
  content:attr(data-section-index);
  position:absolute;
  top:clamp(28px,3vw,44px);
  right:max(20px,calc((100vw - var(--maxw))/2 + 56px));
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.12em;
  color:var(--text-faint);
}
/* Clean white / light-gray section alternation (carries from masthead → proof:
   masthead white, proof gray, then odd sections white, even sections gray). */
#abstract, #why, #data, #tactile, #evaluation, #results{background:var(--paper);}
#overview, #embodiments, #modalities, #tasks, #generalization, #docs{background:var(--paper-deep);}
.video-section{background:var(--paper-deep);}
.video-section .hero-evidence{margin:0;}
.video-section .hero-evidence-frame{box-shadow:var(--evidence-shadow);}

/* Abstract section uses the same eyebrow -> h2 -> paragraph stack
   as every other section (no special two-column layout). */
.evidence-band--paper .abstract-text{
  max-width:var(--measure);
  margin:0;
  font-size:clamp(16.5px,1.25vw,18.5px);
  line-height:1.78;
}

.evidence-caption{
  margin:12px 0 0;
  padding:12px 2px 0;
  border-top:1px solid var(--line);
  color:var(--text-dim);
  font-family:var(--body);
  font-size:13.5px;
  line-height:1.58;
}
.evidence-figure{margin:0;}
.evidence-band--figure .overview-frame{
  border-radius:var(--evidence-radius);
  box-shadow:var(--evidence-shadow);
}
.evidence-band--data .bm-table,
.evidence-band--data .lb-table,
.evidence-band--data .gen-axes,
.evidence-band--results .chart-panel{border-radius:var(--evidence-radius);}
.evidence-band--data .leaderboard{
  margin-top:clamp(38px,5vw,64px);
  padding-top:24px;
  border-top-color:var(--line-strong);
}
.evidence-band--atlas .atlas-grid,
.evidence-band--atlas .task-grid{gap:1px; background:var(--line-strong); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--evidence-shadow);}
.evidence-band--atlas .atlas-card,
.evidence-band--atlas .task-card{border:0; border-radius:0;}
.evidence-band--split .teleop-split,
.evidence-band--split .tactile-wrap{align-items:start;}
.evidence-band--split .teleop-split .ph,
.evidence-band--split .tactile-img,
.evidence-band--split .tactile-render{border-radius:var(--evidence-radius);}
.evidence-band--split .teleop-steps{margin-top:0; border-top:1px solid var(--line-strong);}
.evidence-band--split .teleop-step{border-width:0 0 1px; border-radius:0; padding:18px 2px; background:transparent;}
.evidence-band--media .modalplayer{
  padding:clamp(12px,1.8vw,22px) 0;
  border-top:1px solid var(--line-strong);
  border-bottom:1px solid var(--line-strong);
}
.evidence-band--protocol .eval-tiers{
  gap:0;
  border:var(--frame-border);
  border-radius:var(--evidence-radius);
  overflow:hidden;
  background:var(--line-strong);
  box-shadow:var(--evidence-shadow);
}
.evidence-band--protocol .eval-tier{border:0; border-left:1px solid var(--line-strong); border-radius:0; box-shadow:none;}
.evidence-band--protocol .eval-tier:first-child{border-left:0;}
.evidence-band--results .chart-panel{
  border-color:var(--line-strong);
  border-top:2px solid var(--cyan);
  box-shadow:var(--evidence-shadow);
}
.evidence-band--resources .resource-grid{
  gap:0;
  border:var(--frame-border);
  border-radius:var(--evidence-radius);
  overflow:hidden;
  background:var(--line-strong);
  box-shadow:var(--evidence-shadow);
}
.evidence-band--resources .resource-card{border:0; border-left:1px solid var(--line-strong); border-radius:0; box-shadow:none;}
.evidence-band--resources .resource-card:first-child{border-left:0;}
.evidence-band--resources .resource-card:hover,.evidence-band--resources .resource-card:focus-visible,.evidence-band--resources .resource-card:active{border-color:var(--cyan); background:#f0f5fb; box-shadow:inset 0 0 0 2px var(--cyan); transform:none;}

/* ---------- Navigation ---------- */
.nav{
  position:sticky; top:0; z-index:60; transition:background var(--duration-medium),backdrop-filter var(--duration-medium),border-color var(--duration-medium),box-shadow var(--duration-medium);
  border-bottom:1px solid transparent;
}
.nav.solid{background:rgba(247,246,242,.90); backdrop-filter:blur(14px) saturate(1.08); border-bottom-color:var(--line); box-shadow:0 6px 24px -18px rgba(24,28,27,.26);}
.nav-inner{max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,4vw,56px); height:64px; display:flex; align-items:center; gap:20px;}
.brand{display:flex; align-items:center; gap:10px; flex:none;}
.brand img{height:48px; width:auto; display:block;}
.nav-links{display:flex; gap:2px; margin:0 auto; padding:0 8px; align-items:center;}
.nav-links a{
  font-size:13px; color:var(--text-dim); padding:8px 13px; border-radius:var(--r-sm);
  position:relative; font-family:var(--body); letter-spacing:.01em; transition:color .15s,background .15s;
}
.nav-links a:hover{color:var(--bone); background:rgba(24,28,27,.05);}
.nav-links a.active{color:var(--cyan); background:rgba(41,79,146,.08);}
.nav-links a.active::after{content:""; position:absolute; left:13px; right:13px; bottom:2px; height:2px; background:var(--cyan); border-radius:2px;}
.nav-cta{display:flex; align-items:center; gap:8px; flex:none;}
.nav-cta .btn{font-family:var(--body); letter-spacing:.01em;}
.btn{
  display:inline-flex; align-items:center; gap:8px; font-family:var(--mono); font-size:13px; letter-spacing:.02em;
  padding:9px 16px; border-radius:999px; border:1px solid var(--line-strong); color:var(--text); cursor:pointer;
  transition:color var(--duration-fast),background var(--duration-fast),border-color var(--duration-fast),transform var(--duration-fast); white-space:nowrap; text-decoration:none;
}
.btn svg{width:15px; height:15px;}
.btn:hover{border-color:var(--metal); color:var(--bone); transform:translateY(-1px);}
.btn-primary{background:var(--bone); color:var(--ink); border-color:var(--bone); font-weight:600;}
.btn-primary:hover{background:#28332F; color:var(--ink); transform:translateY(-1px);}
.btn-ghost{border-color:transparent; color:var(--text-dim);}
.btn-ghost:hover{color:var(--cyan); border-color:var(--line-strong);}
.btn:disabled,.btn.is-unavailable{cursor:not-allowed; opacity:.64; transform:none; box-shadow:none;}
.btn:disabled:hover,.btn.is-unavailable:hover{border-color:var(--line); color:inherit; transform:none;}
.chip-coming{font-family:var(--mono); font-size:10px; padding:2px 7px; border-radius:999px; background:rgba(20,32,30,.06); color:var(--text-faint); border:1px solid var(--line); margin-left:4px; vertical-align:middle;}
.icon-btn{width:38px; height:38px; padding:0; justify-content:center; border-color:var(--line-strong);}
.icon-btn svg{width:17px; height:17px;}
.icon-btn[data-soon]{position:relative;}
.icon-btn[data-soon]::after{content:""; position:absolute; top:7px; right:7px; width:6px; height:6px; border-radius:50%; background:var(--text-faint); border:1.5px solid var(--bg);}
.nav-progress{position:absolute; left:0; bottom:0; height:2px; width:0; background:var(--cyan); border-radius:2px; transition:width .1s linear;}
.burger{display:none; width:40px; height:40px; border:1px solid var(--line-strong); background:transparent; border-radius:var(--r-sm); cursor:pointer; color:var(--bone); padding:0; flex-direction:column; align-items:center; justify-content:center; gap:3px;}
.burger span{display:block; width:18px; height:2px; background:currentColor; border-radius:2px;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{position:relative; overflow:hidden; padding:0 0 clamp(16px,2.4vw,32px);}
.hero-grid{display:grid; grid-template-columns:5fr 7fr; gap:clamp(28px,4vw,56px); align-items:end; min-height:54vh; padding:clamp(4px,1vw,12px) 0 clamp(20px,3vw,36px);}
.hero-copy{padding-bottom:8px;}
.hero-copy .eyebrow{margin:0 0 14px;}
.hero h1{font-size:clamp(34px,3.6vw,44px); line-height:1.15; letter-spacing:-.02em; margin-bottom:.2em;}
.hero h1 .grad{background:linear-gradient(110deg,var(--ink-strong) 25%,var(--cyan) 100%); -webkit-background-clip:text; background-clip:text; color:transparent;}
.hero-sub{font-family:var(--display); font-weight:500; font-size:clamp(20px,2.6vw,30px); color:var(--metal); letter-spacing:-.01em; margin-bottom:18px; max-width:18ch;}
.hero-desc{color:var(--text-dim); max-width:46ch; margin-bottom:28px; font-size:clamp(15px,1.4vw,17px);}
.hero-cta{display:flex; flex-wrap:wrap; gap:12px; margin-bottom:28px;}
.hero-meta{display:flex; flex-wrap:wrap; gap:18px 28px; font-family:var(--mono); font-size:12.5px; color:var(--text-faint); letter-spacing:.04em;}
.hero-meta b{color:var(--text-dim); font-weight:500;}
.hero-media{position:relative; border-radius:var(--evidence-radius); overflow:hidden; border:var(--frame-border); background:var(--bg-2); box-shadow:var(--evidence-shadow);}
.hero-media .ph{aspect-ratio:21/9; position:relative; overflow:hidden;}
.hero-media .ph img{width:100%; height:100%; object-fit:cover; filter:saturate(.9) contrast(1.05);}
.hero-video{width:100%; height:100%; object-fit:cover; display:block; background:#000;}
.stagebar{
  position:absolute; left:0; right:0; bottom:0; padding:14px 18px;
  background:linear-gradient(0deg,rgba(12,17,18,.92),rgba(12,17,18,0));
  display:flex; gap:6px; align-items:center; flex-wrap:wrap;
}
.stagebar .seg{font-family:var(--mono); font-size:11px; letter-spacing:.06em; color:var(--on-scrim); padding:4px 8px; border:1px solid rgba(244,241,234,.18); border-radius:4px; transition:color var(--duration-medium),background var(--duration-medium),border-color var(--duration-medium);}
.stagebar .seg.on{color:var(--ink); background:var(--cyan); border-color:var(--cyan);}
.hero-badge{position:absolute; top:14px; left:14px; font-family:var(--mono); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--on-scrim); background:var(--scrim); border:1px solid rgba(244,241,234,.18); padding:5px 10px; border-radius:999px; backdrop-filter:blur(6px);}
.playbadge{position:absolute; top:14px; right:14px; display:flex; align-items:center; gap:6px; font-family:var(--mono); font-size:10.5px; color:var(--text-faint); letter-spacing:.06em;}
.playbadge .dot{width:8px; height:8px; border-radius:50%; background:var(--brick); animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{opacity:.4;}50%{opacity:1;}}

/* ---------- Identity: authors · logos · resource links ---------- */
.identity{padding:clamp(16px,2.4vw,26px) 0 clamp(6px,1.2vw,14px); border-bottom:1px solid var(--line);}
.id-authors{display:flex; flex-wrap:wrap; align-items:baseline; justify-content:center; gap:6px 14px; font-family:var(--body); font-size:15px; color:var(--text); margin-bottom:10px;}
.id-authors .au{font-weight:500;}
.id-authors .au sup{color:var(--cyan); font-size:10px; font-weight:600;}
.id-authors .eq{font-family:var(--mono); font-size:11px; color:var(--text-faint); margin-left:6px;}
.id-affils{display:flex; flex-wrap:wrap; justify-content:center; gap:4px 16px; font-family:var(--mono); font-size:12px; color:var(--text-dim); margin-bottom:18px;}
.id-affils .aff sup{color:var(--cyan);}
.id-affils .id-note{width:100%; text-align:center; color:var(--text-faint); font-size:11px; margin-top:6px; letter-spacing:.01em;}
.id-logos{display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:14px; margin-bottom:clamp(18px,2.4vw,28px);}
.logo-slot{width:120px; height:48px; border:1px dashed var(--line-strong); border-radius:var(--r-sm); display:flex; align-items:center; justify-content:center; font-family:var(--mono); font-size:10px; color:var(--text-faint); letter-spacing:.04em; background:var(--panel-2);}
.rlinks{display:grid; grid-template-columns:repeat(auto-fit,minmax(158px,1fr)); gap:10px; max-width:980px; margin:0 auto;}
.rlink{display:flex; align-items:center; gap:10px; padding:12px 14px; background:var(--panel); border:1px solid var(--line); border-radius:var(--r); text-decoration:none; color:var(--text); transition:border-color .16s,transform .16s,background .16s; position:relative;}
.rlink:hover{border-color:var(--cyan); transform:translateY(-2px); background:var(--panel-2);}
.rlink[data-soon] .rl-sub{color:var(--text-faint);}
.rlink.is-unavailable{cursor:not-allowed; opacity:.72;}
.rlink.is-unavailable:hover{border-color:var(--line); transform:none; background:var(--panel);}
.rlink .ric{width:34px; height:34px; flex:none; border-radius:var(--r-sm); background:rgba(41,79,146,.1); border:1px solid rgba(41,79,146,.22); display:flex; align-items:center; justify-content:center; color:var(--cyan);}
.rlink .ric svg{width:17px; height:17px;}
.rlink[data-soon] .ric{background:rgba(20,32,29,.05); border-color:var(--line); color:var(--text-faint);}
.rlink .rl-text{display:flex; flex-direction:column; line-height:1.2; min-width:0;}
.rlink .rl-name{font-family:var(--display); font-weight:600; font-size:14px; color:var(--bone);}
.rlink .rl-sub{font-family:var(--mono); font-size:10.5px; color:var(--text-faint); margin-top:2px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.footer-unavailable{display:block; color:var(--text-faint); margin:7px 0; font-size:13px;}

/* ---------- Proof strip ---------- */
.proof{background:var(--bg-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.proof-grid{display:grid; grid-template-columns:repeat(6,1fr); max-width:var(--maxw); margin:0 auto;}
.proof-cell{padding:clamp(12px,1.4vw,18px) clamp(12px,1.4vw,20px); border-left:1px solid var(--line); cursor:pointer; transition:background .2s,box-shadow .2s; position:relative; outline:none;}
.proof-cell::before{content:""; position:absolute; left:0; top:0; width:2px; height:100%; background:var(--cyan); transform:scaleY(0); transform-origin:center; transition:transform .25s;}
.proof-cell:hover,.proof-cell.selected,.proof-cell:focus-visible{background:rgba(41,79,146,.09); box-shadow:inset 0 1px 0 rgba(41,79,146,.16),inset 0 -1px 0 rgba(41,79,146,.16);}
.proof-cell:hover::before,.proof-cell.selected::before,.proof-cell:focus-visible::before{transform:scaleY(1);}
.proof-cell .n{font-family:var(--display); font-weight:700; font-size:clamp(22px,2.6vw,30px); color:var(--bone); line-height:1; letter-spacing:-.02em;}
.proof-cell .l{font-family:var(--mono); font-size:11.5px; color:var(--text-dim); margin-top:6px; letter-spacing:.02em; text-transform:none;}
.proof-cell .q{font-family:var(--mono); font-size:11px; color:var(--cyan); margin-top:4px; letter-spacing:.03em;}
.proof-tip{position:absolute; left:14px; right:14px; bottom:calc(100% + 8px); background:var(--bg-3); border:1px solid var(--line-strong); border-radius:var(--r); padding:10px 12px; font-size:12.5px; color:var(--text); line-height:1.5; opacity:0; pointer-events:none; transition:opacity .18s; z-index:30; box-shadow:var(--shadow); max-width:260px;}
.proof-cell:hover .proof-tip,.proof-cell:focus-visible .proof-tip{opacity:1;}

/* ---------- Compare table ---------- */
/* Benchmark feature-comparison matrix */
.bm-table-wrap{overflow-x:auto; margin:0 -4px; padding:0 4px;}
.bm-table{border-collapse:separate; border-spacing:0; width:100%; min-width:780px; font-size:13.5px; background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--evidence-shadow);}
.bm-table th,.bm-table td{padding:11px 12px; text-align:center; border-bottom:1px solid var(--line); white-space:nowrap;}
.bm-table thead th{font-family:var(--mono); font-size:11px; letter-spacing:.04em; text-transform:none; color:var(--text-dim); font-weight:600; background:var(--panel-2); border-bottom:1px solid var(--line-strong); position:sticky; top:0;}
.bm-table th.bm-name,.bm-table td:first-child{text-align:left; font-family:var(--body); color:var(--bone); font-weight:500; position:sticky; left:0; background:var(--panel);}
.bm-table thead th.bm-name{background:var(--panel-2);}
.bm-table tbody tr{cursor:pointer; outline:none;}
.bm-table tbody tr:hover td,.bm-table tbody tr.selected td,.bm-table tbody tr:focus-visible td{background:rgba(41,79,146,.13); box-shadow:inset 0 1px 0 rgba(41,79,146,.16),inset 0 -1px 0 rgba(41,79,146,.16);}
.bm-table tbody tr:hover td:first-child,.bm-table tbody tr.selected td:first-child,.bm-table tbody tr:focus-visible td:first-child{background:#e7edf7; color:var(--cyan);}
.bm-table tbody tr.selected td:first-child::before,.bm-table tbody tr:focus-visible td:first-child::before{content:""; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--cyan);}
.bm-table td:first-child{border-right:1px solid var(--line);}
.bm-table .yk{color:var(--green); font-weight:700; font-size:15px;}
.bm-table .nx{color:var(--brick); opacity:.55; font-size:14px;}
.bm-table tr.us td{background:rgba(41,79,146,.09); border-top:2px solid var(--cyan); border-bottom:2px solid var(--cyan);}
.bm-table tr.us td:first-child{background:rgba(41,79,146,.09); color:var(--bone);}
.bm-table tr.us .yk{color:var(--cyan);}

/* legacy 3-col compare (unused) */
.compare{display:grid; grid-template-columns:1.1fr 1fr 1.1fr; gap:0; border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--evidence-shadow);}

/* abstract & video section */
.abstract-text{font-size:clamp(15px,1.5vw,17px); line-height:1.7; color:var(--text); max-width:78ch; margin:0 0 clamp(18px,2.4vw,28px); text-align:justify; text-justify:inter-word;}
.abstract-text b{color:var(--bone);}

/* ===== Editorial evidence masthead ===== */
.hero.masthead{
  padding:clamp(30px,3.6vw,46px) 0 clamp(8px,1vw,14px);
  background:linear-gradient(180deg,#F7F8F9 0%,#FFFFFF 92%);
  border-top:1px solid rgba(21,32,30,.08);
}
.masthead-grid{
  display:grid;
  grid-template-columns:minmax(320px,.82fr) minmax(0,1.18fr);
  gap:clamp(26px,3.2vw,44px);
  align-items:center;
}
.masthead-copy{min-width:0; text-align:left;}
.hero.masthead .eyebrow{margin:0 0 18px;}
.hero.masthead h1{font-size:clamp(34px,3.6vw,44px); margin:0 0 14px;}
.masthead-accent{color:var(--copper);}
.paper-title{font-family:var(--display); font-weight:600; font-size:clamp(15px,1.45vw,19px); line-height:1.35; color:var(--bone); max-width:32ch; margin:0 0 12px; letter-spacing:-.01em;}
.hero.masthead .hero-sub{
  max-width:19ch;
  margin:0 0 17px;
  color:var(--bone);
  font-size:clamp(22px,2.15vw,31px);
  line-height:1.14;
}
.hero.masthead .hero-desc{max-width:48ch; margin:0 0 15px; line-height:1.6;}
.review-line{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:6px 10px;
  margin-bottom:15px;
  padding-top:12px;
  border-top:1px solid var(--line-strong);
  font-family:var(--mono);
  font-size:13px;
  color:var(--text-dim);
  letter-spacing:.02em;
}
.review-line .au{color:var(--bone); font-weight:600; font-size:14px;}
.review-line .affil{color:var(--text-faint);}
.hero.masthead .rlinks{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  max-width:none;
  margin:0;
  border-top:1px solid var(--line-strong);
  border-bottom:1px solid var(--line-strong);
}
.hero.masthead .rlink{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:2px;
  min-width:0;
  padding:10px 11px;
  border:0;
  border-left:1px solid var(--line);
  border-radius:0;
  background:transparent;
}
.hero.masthead .rlink:first-child{border-left:0;}
.hero.masthead a.rlink:hover{background:rgba(41,79,146,.07); transform:none;}
.hero.masthead .rlink.is-unavailable:hover{background:transparent;}
.hero.masthead .rl-name{font-family:var(--mono); font-size:11px; font-weight:600; letter-spacing:.02em;}
.hero.masthead .rl-sub{font-size:9.5px; text-overflow:ellipsis; overflow:hidden; max-width:100%;}
.hero.masthead .hero-cta{margin:15px 0 0;}
.hero-evidence{margin:0; min-width:0;}
.hero-evidence-frame{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  border:var(--frame-border);
  border-radius:var(--evidence-radius);
  background:#050707;
  box-shadow:0 24px 55px -40px rgba(14,26,24,.42);
}
.hero-evidence-frame .hero-video{width:100%; height:100%; object-fit:cover; display:block;}
/* Project-showcase video placeholder (reserved, not a single-task rollout). */
.hero-video-ph{display:flex; align-items:center; justify-content:center; gap:10px; color:rgba(244,241,234,.62); font-family:var(--mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;}
.hero-video-ph .ph-play{font-size:18px; color:rgba(244,241,234,.72);}
.hero-video-ph .ph-soon{color:rgba(244,241,234,.42); text-transform:none; font-family:var(--body); font-size:11.5px; letter-spacing:0;}
.evidence-index{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:var(--frame-border);
  border-top:0;
  background:var(--surface);
}
.evidence-index span{
  min-width:0;
  padding:9px 11px;
  border-left:1px solid var(--line);
  font-family:var(--mono);
  font-size:10px;
  color:var(--text-dim);
  line-height:1.4;
}
.evidence-index span:first-child{border-left:0;}
.evidence-index b{display:block; color:var(--text-faint); font-size:8.5px; font-weight:500; letter-spacing:.08em; text-transform:uppercase;}
.hero-evidence figcaption{
  max-width:68ch;
  margin:11px 0 0;
  padding:10px 2px 0;
  border-top:1px solid var(--line);
  color:var(--text-dim);
  font-size:13px;
  line-height:1.55;
}

/* leaderboard */
.leaderboard{margin-top:clamp(18px,2.4vw,28px); padding-top:clamp(16px,2vw,24px); border-top:1px solid var(--line);}
.lb-title{font-family:var(--display); font-size:18px; color:var(--bone); margin:0 0 12px; display:flex; align-items:center; gap:10px;}
.lb-prelim{font-family:var(--mono); font-size:10px; padding:2px 8px; border-radius:999px; background:rgba(199,126,26,.12); color:var(--amber); border:1px solid rgba(199,126,26,.3); letter-spacing:.04em; font-weight:600;}
.lb-wrap{overflow-x:auto; margin:0 -4px; padding:0 4px;}
.lb-table{border-collapse:separate; border-spacing:0; width:100%; min-width:520px; font-size:13.5px; background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--evidence-shadow);}
.lb-table th,.lb-table td{padding:10px 14px; text-align:center; border-bottom:1px solid var(--line);}
.lb-table thead th{font-family:var(--mono); font-size:11px; color:var(--text-dim); font-weight:600; background:var(--panel-2); border-bottom:1px solid var(--line-strong);}
.lb-table th.rk,.lb-table td.rk{width:42px; color:var(--text-faint); font-family:var(--mono);}
.lb-table th.pn,.lb-table td.pn{text-align:left; font-family:var(--display); font-weight:600; color:var(--bone);}
.lb-table td.avg{color:var(--cyan); font-family:var(--mono); font-weight:700;}
.lb-table th.avg{color:var(--cyan);}
.lb-table tbody tr.lead td{background:rgba(41,79,146,.09);}
.lb-table tbody tr.lead td.pn::before{content:"★ "; color:var(--copper);}
.lb-table tbody tr:last-child td{border-bottom:0;}
.compare .head{padding:16px 20px; font-family:var(--mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--text-dim); border-bottom:1px solid var(--line);}
.compare .head.us{background:rgba(41,79,146,.08); color:var(--cyan);}
.compare .row{padding:13px 20px; border-bottom:1px solid var(--line); font-size:14.5px; color:var(--text-dim); display:flex; gap:8px;}
.compare .row:last-child{border-bottom:0;}
.compare .col.us .row{color:var(--text);}
.compare .row svg{flex:none; margin-top:1px;}
.compare-tag{display:inline-flex; align-items:center; gap:6px; margin-right:6px;}
.us-pill{font-family:var(--mono); font-size:11px; color:var(--cyan);}

/* ---------- Task cards ---------- */
.task-rail{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:28px;}
.filter-chip{font-family:var(--mono); font-size:12px; padding:7px 13px; border-radius:999px; border:1px solid var(--line-strong); background:transparent; color:var(--text-dim); cursor:pointer; transition:color var(--duration-fast),background var(--duration-fast),border-color var(--duration-fast);}
.filter-chip:hover{color:var(--bone); border-color:var(--metal-dim);}
.filter-chip.active{background:var(--bone); color:var(--ink); border-color:var(--bone); font-weight:600;}
.task-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(12px,1.4vw,18px);}
.task-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden;
  display:flex; flex-direction:column; transition:transform .2s,border-color .2s; cursor:pointer;
}
.task-card:hover{transform:translateY(-4px); border-color:var(--metal-dim); box-shadow:0 10px 24px -18px rgba(20,32,30,.45);}
.task-card .thumb{aspect-ratio:16/9; position:relative; overflow:hidden; background:var(--bg-2);}
.task-card .thumb img{width:100%; height:100%; object-fit:cover; transition:transform .25s ease;}
.task-card:hover .thumb img{transform:scale(1.04);}
.task-card .thumb .ph-ribbon{position:absolute; top:10px; left:10px; font-family:var(--mono); font-size:10px; letter-spacing:.06em; color:var(--on-scrim); background:var(--scrim); border:1px solid rgba(244,241,234,.18); padding:3px 7px; border-radius:4px; backdrop-filter:blur(4px);}
.task-card.featured{border-color:var(--cyan);}
.task-card.featured:hover{border-color:var(--cyan);}
.task-card .thumb .featured-badge{position:absolute; top:10px; right:10px; font-family:var(--mono); font-size:10px; letter-spacing:.06em; color:var(--ink); background:var(--cyan); border:1px solid rgba(41,79,146,.55); padding:3px 7px; border-radius:4px; backdrop-filter:blur(4px); font-weight:600;}
.task-card .body{padding:12px 14px 13px; flex:1; display:flex; flex-direction:column; gap:8px;}
.task-card .tid{display:flex; align-items:center; justify-content:space-between; gap:8px;}
.task-card .tid .id{font-family:var(--mono); font-size:11.5px; color:var(--cyan); letter-spacing:.06em;}
.task-card .tid .emb{font-family:var(--mono); font-size:10.5px; color:var(--text-faint);}
.task-card h3{font-size:15px; line-height:1.25; margin:0; color:var(--bone);}
.task-card .goal{display:none;}
.task-tags{display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;}
.task-tags .t{font-family:var(--mono); font-size:10.5px; padding:3px 8px; border-radius:4px; background:rgba(20,32,30,.05); color:var(--text-dim); border:1px solid var(--line);}
.task-tags .t.tool{color:var(--amber); border-color:rgba(199,126,26,.3);}
.task-tags .t.art{color:var(--cyan); border-color:rgba(41,79,146,.3);}
.task-tags .t.long{color:var(--violet); border-color:rgba(107,79,176,.3);}
.stage-mini{display:flex; gap:4px; margin-top:6px;}
.stage-mini .s{flex:1; height:5px; border-radius:3px; background:var(--line); min-width:6px;}
.featured-only{display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(16px,1.6vw,22px);}

/* ---------- Task modal ---------- */
.modal-overlay{position:fixed; inset:0; background:rgba(20,32,30,.5); backdrop-filter:blur(6px); z-index:100; display:none; padding:clamp(16px,4vw,64px) 0; overflow:auto;}
.modal-overlay.open{display:block;}
.modal{max-width:1080px; margin:auto; background:var(--bg-3); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--shadow);}
.modal--duo{max-width:1180px; background:transparent; border:0; border-radius:0; box-shadow:none; overflow:visible; display:flex; align-items:center; gap:0;}
.modal-clip{position:relative; background:var(--bg-3); border:var(--frame-border); border-radius:var(--evidence-radius); box-shadow:var(--evidence-shadow); overflow:hidden;}
.modal-clip--media{flex:0 0 auto; width:clamp(300px,40vw,500px);}
.modal-clip--media .task-front-video{width:100%; height:auto; aspect-ratio:4/3; object-fit:cover; display:block; background:var(--bg-3); transform:rotate(180deg);}
/* Native WebKit controls are composited separately from the video surface. Keep
   their progress rail in the same 180° task-view orientation. */
.modal-clip--media .task-front-video::-webkit-media-controls-panel{transform:rotate(180deg); transform-origin:center;}
.modal-link{flex:0 0 36px; height:2px; align-self:center; background:linear-gradient(90deg,var(--line-strong),var(--metal-dim) 50%,var(--line-strong)); position:relative;}
.modal-link::before,.modal-link::after{content:""; position:absolute; top:50%; transform:translateY(-50%); width:8px; height:8px; border-radius:50%; background:var(--bg-3); border:2px solid var(--metal-dim); box-sizing:border-box;}
.modal-link::before{left:-4px;} .modal-link::after{right:-4px;}
.modal-clip--body{flex:1 1 auto; min-width:0; padding:clamp(20px,2.2vw,32px); max-height:calc(100vh - 96px); overflow:auto;}
.modal-close{position:absolute; top:14px; right:14px; width:38px; height:38px; border-radius:50%; background:var(--scrim); border:1px solid rgba(244,241,234,.22); color:var(--on-scrim); cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:20px; backdrop-filter:blur(6px);}
.modal-body{padding:clamp(20px,3vw,40px);}
.modal-title{display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; margin-bottom:6px;}
.modal-title .id{font-family:var(--mono); color:var(--cyan); font-size:16px;}
.modal-title h2{font-size:clamp(24px,3vw,34px); margin:0;}
.modal-emb{font-family:var(--mono); font-size:13px; color:var(--text-dim); margin-bottom:22px;}
.modal-section{margin-top:24px;}
.modal-section h4{font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--text-faint); margin-bottom:10px;}
.modal-section p{color:var(--text);}
.modal-stages{display:flex; gap:0; flex-wrap:wrap;}
.modal-stages .st{flex:1; min-width:120px; padding:12px 14px; background:var(--panel); border:1px solid var(--line); border-right:0; font-family:var(--mono); font-size:13px; color:var(--text-dim);}
.modal-stages .st:first-child{border-radius:var(--r-sm) 0 0 var(--r-sm);}
.modal-stages .st:last-child{border-radius:0 var(--r-sm) var(--r-sm) 0; border-right:1px solid var(--line);}
.modal-channels{display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-top:10px;}
.modal-channels .ch{padding:12px; background:var(--panel); border:1px solid var(--line); border-radius:var(--r-sm);}
.modal-channels .ch .lab{font-family:var(--mono); font-size:11px; color:var(--text-faint);}
.modal-channels .ch .v{font-family:var(--display); font-size:22px; color:var(--bone); margin-top:4px;}
.modal-channels .ch .v small{font-size:13px; color:var(--text-dim); font-family:var(--mono);}

/* ---------- Long-horizon rollout ---------- */
.rollout{display:grid; grid-template-columns:1fr 1fr; gap:clamp(16px,2vw,24px);}

/* ---------- Synchronized multi-view video player ---------- */
.syncplayer{margin-top:4px;}
.sync-grid{display:grid; gap:8px;}
.sync-grid.cols-2{grid-template-columns:1fr 1fr;}
.sync-grid.cols-3{grid-template-columns:repeat(3,1fr);}
.sync-tile{position:relative; margin:0; border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; background:#000; aspect-ratio:16/10; box-shadow:var(--evidence-shadow);}
.sync-tile video{width:100%; height:100%; object-fit:cover; display:block;}
.sync-tile figcaption{position:absolute; left:8px; bottom:8px; z-index:2; font-family:var(--mono); font-size:12px; font-weight:600; color:var(--on-scrim); background:var(--scrim); border:1px solid rgba(244,241,234,.22); padding:3px 7px; border-radius:4px; backdrop-filter:blur(4px); letter-spacing:.06em;}
.sync-ctrl{display:flex; align-items:center; gap:14px; margin-top:14px; padding:12px 16px; background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); flex-wrap:wrap; box-shadow:var(--evidence-shadow);}
.sync-play{flex:none; width:42px; height:42px; border-radius:50%; border:1px solid var(--line-strong); background:var(--bone); color:var(--ink); cursor:pointer; font-size:15px; line-height:1; display:flex; align-items:center; justify-content:center; transition:transform .12s;}
.sync-play:hover{transform:scale(1.06);}
.sync-seek{flex:1; min-width:180px; accent-color:var(--cyan); height:4px;}
.sync-time{font-family:var(--mono); font-size:12px; color:var(--text-dim); min-width:84px;}
.sync-ep{font-family:var(--mono); font-size:11px; color:var(--text-faint); margin-left:auto;}
@media (max-width:760px){ .sync-grid.cols-3{grid-template-columns:1fr 1fr;} }

/* ---------- Synchronized 8-modality video player ---------- */
.modal-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:8px;}
.mtile{position:relative; margin:0; border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; background:var(--panel); display:flex; flex-direction:column; box-shadow:var(--evidence-shadow);}
.mtile img{width:100%; aspect-ratio:4/3; object-fit:cover; display:block; background:#fff;}
.mtile video{width:100%; aspect-ratio:4/3; object-fit:cover; display:block; background:#000;}
.mtile figcaption{position:static; min-height:42px; display:flex; align-items:center; padding:9px 11px 10px; border-top:1px solid var(--line); font-family:var(--display); font-size:12px; font-weight:600; color:var(--bone); background:var(--panel); letter-spacing:0; line-height:1.35;}
.mp-ctrl{display:flex; align-items:center; gap:14px; margin-top:16px; padding:12px 16px; background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); flex-wrap:wrap; box-shadow:var(--evidence-shadow);}
.mp-play{flex:none; width:42px; height:42px; border-radius:50%; border:1px solid var(--line-strong); background:var(--bone); color:var(--ink); cursor:pointer; font-size:15px; display:flex; align-items:center; justify-content:center; transition:transform .12s;}
.mp-play:hover{transform:scale(1.06);}
.mp-seek{flex:1; min-width:180px; accent-color:var(--cyan); height:4px;}
.mp-frame{font-family:var(--mono); font-size:12px; color:var(--text-dim); min-width:110px;}
.mp-ep{font-family:var(--mono); font-size:11px; color:var(--text-faint); margin-left:auto;}
@media (max-width:760px){ .modal-grid{grid-template-columns:1fr 1fr;} }
.rollout-panel{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--evidence-shadow);}
.rollout-panel .ph{aspect-ratio:16/9; position:relative; background:var(--bg-2);}
.rollout-panel .ph img{width:100%; height:100%; object-fit:cover;}
.rollout-panel .ph video{width:100%; height:100%; object-fit:cover; display:block; background:#000;}
.rollout-panel .label{position:absolute; left:12px; top:12px; font-family:var(--mono); font-size:11px; letter-spacing:.06em; padding:5px 9px; border-radius:4px; background:var(--scrim); border:1px solid rgba(244,241,234,.22); color:var(--on-scrim);}
.rollout-panel .label.human{color:var(--cyan);}
.rollout-panel .label.policy{color:var(--amber);}
.rollout-panel .meta{padding:14px 16px; display:flex; justify-content:space-between; align-items:center; font-family:var(--mono); font-size:12px; color:var(--text-dim); border-top:1px solid var(--line);}
.rollout-timeline{margin-top:clamp(20px,2.4vw,30px);}
.timeline-track{position:relative; height:42px; background:var(--panel); border:1px solid var(--line); border-radius:var(--r-sm); overflow:hidden;}
.timeline-track .seg{position:absolute; top:0; bottom:0; display:flex; align-items:center; padding:0 10px; font-family:var(--mono); font-size:11px; color:var(--text-dim); border-right:1px solid var(--line); overflow:hidden; white-space:nowrap;}
.timeline-needle{position:absolute; top:-4px; bottom:-4px; width:2px; background:var(--cyan); transition:left .12s linear; box-shadow:0 0 8px var(--cyan);}
.timeline-axis{display:flex; justify-content:space-between; font-family:var(--mono); font-size:10.5px; color:var(--text-faint); margin-top:6px;}

/* ---------- Embodiment atlas ---------- */
.atlas-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(14px,1.6vw,20px);}
.atlas-card{background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; display:flex; flex-direction:column; transition:border-color .2s, transform .2s;}
.atlas-card:hover{border-color:var(--metal-dim); transform:translateY(-3px); box-shadow:0 10px 24px -18px rgba(20,32,30,.45);}
.atlas-card .render{aspect-ratio:4/3; background:linear-gradient(180deg,#1a2326,#11181a); display:flex; align-items:center; justify-content:center; padding:18px;}
.atlas-card .render img{max-height:100%; max-width:100%; object-fit:contain;}
.atlas-card .info{padding:13px 15px 15px; display:flex; flex-direction:column; gap:7px;}
.atlas-card h3{font-size:15px; line-height:1.25; margin:0; color:var(--bone);}
.atlas-card .specs{display:flex; flex-direction:column; gap:3px; font-size:12px; color:var(--text-dim); line-height:1.4;}
.atlas-card .specs .k{font-family:var(--mono); color:var(--text-faint); font-size:10.5px; margin-right:6px;}

/* ---------- Teleop ---------- */
.teleop-split{display:grid; grid-template-columns:1fr 1.1fr; gap:clamp(24px,3vw,44px); align-items:center;}
.teleop-split .ph{position:relative; border-radius:var(--evidence-radius); overflow:hidden; border:var(--frame-border); background:var(--panel); box-shadow:var(--evidence-shadow);}
.teleop-split .ph img{width:100%; display:block;}
.teleop-split .ph > .evidence-caption{margin:0; padding:13px 16px 15px; border-top:1px solid var(--line); background:var(--panel);}
.teleop-split .triad{display:grid; grid-template-columns:repeat(3,1fr); gap:8px; padding:12px;}
.teleop-split .triad .seg{aspect-ratio:1; border-radius:var(--r-sm); border:1px solid var(--line); background:var(--bg-3); display:flex; align-items:center; justify-content:center; position:relative; overflow:hidden;}
.teleop-split .triad .seg .cap{position:absolute; bottom:8px; left:8px; font-family:var(--mono); font-size:10px; color:var(--text-dim);}
.teleop-steps{display:flex; flex-direction:column; gap:8px; margin-top:24px; counter-reset:step;}
.teleop-step{display:flex; gap:16px; padding:16px 18px; background:var(--panel); border:1px solid var(--line); border-radius:var(--r); counter-increment:step;}
.teleop-step::before{content:counter(step,decimal-leading-zero); font-family:var(--mono); color:var(--cyan); font-size:13px; flex:none;}
.teleop-step h4{margin:0 0 2px; font-family:var(--body); font-weight:600; font-size:15px; color:var(--bone);}
.teleop-step p{margin:0; font-size:14px; color:var(--text-dim);}

/* ---------- Modalities wall ---------- */
.modalities{display:grid; grid-template-columns:repeat(4,1fr); gap:10px;}
.modality{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; position:relative; box-shadow:var(--evidence-shadow);}
.modality.sync .panel-tag{background:var(--cyan); color:var(--ink);}
.panel-tag{position:absolute; top:8px; left:8px; z-index:3; font-family:var(--mono); font-size:9.5px; letter-spacing:.06em; padding:3px 6px; border-radius:3px; background:var(--scrim); color:var(--on-scrim); border:1px solid rgba(244,241,234,.22);}
.modality .preview{aspect-ratio:4/3; position:relative; background:var(--bg-2); overflow:hidden;}
.modality .preview .frame{position:absolute; inset:0;}
.modality:hover .preview .scan{opacity:1;}
.modality .caption{padding:10px 12px 12px; display:flex; justify-content:space-between; align-items:baseline; gap:8px;}
.modality .caption .n{font-family:var(--mono); font-size:13px; color:var(--bone);}
.modality .caption .d{font-size:11px; color:var(--text-faint); text-align:right;}
.modality .timeline-mini{position:absolute; left:0; right:0; bottom:42px; height:3px; background:rgba(20,32,30,.1);}
.modality .timeline-mini .fill{height:100%; background:var(--cyan); width:30%; transition:width .1s linear;}
.sync-cntrl{display:flex; align-items:center; gap:16px; margin-top:20px; padding:14px 18px; background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); flex-wrap:wrap; box-shadow:var(--evidence-shadow);}
.sync-cntrl label{font-family:var(--mono); font-size:12px; color:var(--text-dim);}
.sync-cntrl input[type=range]{flex:1; min-width:180px; accent-color:var(--cyan);}
.sync-cntrl .playbtn{width:38px; height:38px; border-radius:50%; border:1px solid var(--line-strong); background:transparent; color:var(--bone); cursor:pointer; display:flex; align-items:center; justify-content:center;}
.sync-cntrl .frame-counter{font-family:var(--mono); font-size:12px; color:var(--cyan); min-width:80px;}

/* ---------- Tactile interface ---------- */
.tactile-wrap{display:grid; grid-template-columns:1fr 1fr; gap:clamp(24px,3vw,44px); align-items:center;}
.tactile-switch{display:grid; grid-template-columns:1fr 1fr; gap:14px;}
.tactile-render{background:linear-gradient(180deg,#FFFFFF,#F4F4F5); border:var(--frame-border); border-radius:var(--evidence-radius); aspect-ratio:1; display:flex; align-items:center; justify-content:center; padding:18px; position:relative; box-shadow:var(--evidence-shadow);}
.tactile-render img{max-height:100%; max-width:100%; object-fit:contain;}
.tactile-img{background:#fff; border:var(--frame-border); border-radius:var(--evidence-radius); aspect-ratio:4/3; overflow:hidden; position:relative; box-shadow:var(--evidence-shadow);}
.tactile-img img{width:100%; height:100%; object-fit:contain;}
.tactile-render{cursor:pointer;}
.tactile-render.active{border-color:var(--cyan); box-shadow:0 0 0 2px var(--cyan), var(--evidence-shadow);}
#tactile-img{transition:opacity .3s ease;}
#tactile-img.swap{opacity:0;}
.tactile-wrap > div:last-child{overflow:hidden; border:var(--frame-border); border-radius:var(--evidence-radius); background:var(--panel); box-shadow:var(--evidence-shadow);}
.tactile-wrap > div:last-child .tactile-img{border:0; border-radius:0; box-shadow:none;}
.tactile-wrap > div:last-child > .evidence-caption{margin:0; padding:13px 16px 15px; border-top:1px solid var(--line); background:var(--panel);}
.tactile-steps{display:flex; gap:8px; margin-top:26px; flex-wrap:wrap; justify-content:center;}
.tactile-step{padding:10px 14px; background:var(--panel); border:1px solid var(--line); border-radius:var(--r); font-family:var(--mono); font-size:12px; color:var(--text-dim);}
.tactile-step .arrow{color:var(--cyan);}
.heat-legend{display:flex; align-items:center; gap:10px; margin-top:14px; font-family:var(--mono); font-size:11px; color:var(--text-faint);}
.heat-legend .bar{width:120px; height:8px; border-radius:4px; background:linear-gradient(90deg,#3a1a14,var(--coral),var(--yellow),#fff);}

/* ---------- Generalization ---------- */
.gen-grid{display:grid; grid-template-columns:1fr 1fr; gap:14px; max-width:760px;}
/* overview figure */
.overview-frame{margin:0; border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; background:var(--panel); box-shadow:var(--evidence-shadow);}
.overview-frame img{width:100%; display:block; border-bottom:1px solid var(--line);}
.overview-frame figcaption{margin:0; padding:14px 18px 16px; border:0; font-family:var(--body); font-size:13.5px; color:var(--text-dim); background:var(--panel); line-height:1.55;}

/* generalization channel preview blocks */
.gen-cell{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; position:relative; display:flex; flex-direction:column; transition:border-color .2s,transform .2s,box-shadow .2s; box-shadow:var(--evidence-shadow);}
.gen-cell:hover{border-color:var(--metal-dim); transform:translateY(-2px); box-shadow:0 8px 22px -10px rgba(24,28,27,.28), 0 20px 48px -16px rgba(24,28,27,.22);}
.gen-cell .gen-ph{aspect-ratio:16/10; position:relative; background:var(--bg-2); overflow:hidden;}
.gen-cell .gen-ph img{width:100%; height:100%; object-fit:cover; transition:transform .5s;}
.gen-cell:hover .gen-ph img{transform:scale(1.03);}
.gen-cell .gen-label{position:absolute; left:12px; top:12px; z-index:2; font-family:var(--mono); font-size:12px; letter-spacing:.06em; font-weight:600; padding:5px 10px; border-radius:4px; background:var(--scrim); color:var(--on-scrim); border:1px solid rgba(244,241,234,.22); backdrop-filter:blur(4px); border-left:3px solid var(--c, var(--metal));}
.gen-cell .gen-badge{position:absolute; right:12px; top:12px; z-index:2; font-family:var(--mono); font-size:9.5px; letter-spacing:.08em; text-transform:uppercase; padding:4px 8px; border-radius:999px; background:rgba(255,255,255,.78); color:var(--text-faint); border:1px solid var(--line-strong);}
.gen-cell .gen-cap{padding:12px 14px 14px;}
.gen-cell .gen-tag{display:inline-block; font-family:var(--mono); font-size:10.5px; padding:2px 8px; border-radius:999px; margin-bottom:7px; background:color-mix(in srgb, var(--c, var(--metal)) 14%, transparent); color:var(--c, var(--metal)); border:1px solid color-mix(in srgb, var(--c, var(--metal)) 30%, transparent);}
.gen-cell .gen-cap p{margin:0; font-size:13px; color:var(--text-dim); line-height:1.5;}
.gen-caption{text-align:center; color:var(--text-faint); font-family:var(--mono); font-size:12px; margin-top:14px;}
.gen-axes{display:grid; grid-template-columns:1fr 1fr; gap:0; margin-top:clamp(16px,2vw,26px); border:1px solid var(--line-strong); border-radius:var(--r-lg); overflow:hidden;}
.gen-axes .group-head{padding:14px 20px; font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; border-bottom:1px solid var(--line); border-right:1px solid var(--line);}
.gen-axes .group-head.inv{color:var(--cyan); background:rgba(41,79,146,.06);}
.gen-axes .group-head.equi{color:var(--amber); background:rgba(199,126,26,.06);}
.gen-axes .axis-row{padding:13px 20px; border-bottom:1px solid var(--line); font-size:14.5px; color:var(--text); display:flex; justify-content:space-between; gap:16px; align-items:baseline;}
.gen-axes .axis-row:last-child{border-bottom:0;}
.gen-axes .axis-row .note{color:var(--text-faint); font-size:12.5px; text-align:right;}
.gen-axes .axis-row.inv-color{border-left:3px solid var(--cyan);}
.gen-axes .axis-row.equi-color{border-left:3px solid var(--amber);}

/* Seven axis video placeholders (replaces the four-channel image grid). */
.gen-axes{display:flex; flex-direction:column; gap:clamp(18px,2.2vw,28px); margin-top:0; border:0; border-radius:0; overflow:visible;}
.gen-axes .gen-group{display:flex; flex-direction:column; gap:10px;}
.gen-axes .group-head{padding:0; font-family:var(--display); font-size:clamp(15px,1.4vw,18px); font-weight:700; letter-spacing:0; text-transform:none; border:0; color:var(--bone);}
.gen-axes .group-head.inv{color:var(--cyan); background:transparent;}
.gen-axes .group-head.equi{color:var(--amber); background:transparent;}
.gen-axes .group-head .muted{font-family:var(--body); font-weight:400; font-size:13px; color:var(--text-faint); letter-spacing:0;}
.axis-grid{display:grid; grid-template-columns:repeat(5,1fr); gap:clamp(12px,1.4vw,18px);}
.axis-grid.two{grid-template-columns:repeat(2,1fr);}
.axis-card{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; display:flex; flex-direction:column; box-shadow:var(--evidence-shadow);}
.axis-video{width:100%; aspect-ratio:16/9; object-fit:cover; display:block; background:#000;}
.axis-meta{padding:10px 12px 12px; display:flex; flex-direction:column; gap:2px; border-top:1px solid var(--line); background:var(--panel);}
.axis-name{font-family:var(--display); font-weight:700; font-size:14px; color:var(--bone);}
.axis-note{font-size:12px; color:var(--text-dim); line-height:1.4;}

/* ---------- Evaluation ---------- */
.eval-tiers{display:grid; grid-template-columns:repeat(4,1fr); gap:14px;}
.eval-tier{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); padding:20px; position:relative; box-shadow:var(--evidence-shadow);}
.eval-tier .num{font-family:var(--display); font-size:32px; color:var(--bone); margin-bottom:6px;}
.eval-tier .n{font-family:var(--display); font-size:18px; color:var(--bone); margin-bottom:8px;}
.eval-tier .d{font-size:13px; color:var(--text-dim); line-height:1.5;}
.eval-tier .top-bar{position:absolute; top:0; left:0; right:0; height:3px; border-radius:var(--evidence-radius) var(--evidence-radius) 0 0;}
.eval-stages{display:flex; gap:0; margin-top:clamp(16px,2vw,26px); border:1px solid var(--line); border-radius:var(--r); overflow:hidden; background:var(--panel);}
.eval-stage{flex:1; padding:16px; border-right:1px solid var(--line); position:relative;}
.eval-stage:last-child{border-right:0;}
.eval-stage .nm{font-family:var(--mono); font-size:12px; color:var(--cyan); margin-bottom:6px;}
.eval-stage .st{font-size:13.5px; color:var(--text-dim);}
.eval-stage.sat{background:rgba(46,139,98,.08);}
.eval-stage .check{position:absolute; top:14px; right:14px; color:var(--green); opacity:0; transition:opacity .3s;}
.eval-stage.sat .check{opacity:1;}

/* ---------- Results ---------- */
.results-controls{display:flex; gap:14px; flex-wrap:wrap; align-items:flex-end; margin-bottom:24px;}
.results-controls .field{display:flex; flex-direction:column; gap:5px;}
.results-controls label{font-family:var(--mono); font-size:11px; color:var(--text-faint); letter-spacing:.06em;}
.results-controls select{background:var(--panel); border:1px solid var(--line-strong); color:var(--text); padding:9px 12px; border-radius:var(--r-sm); font-family:var(--mono); font-size:13px;}
.chart-panel{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); padding:clamp(18px,2vw,28px); margin-bottom:18px; box-shadow:var(--evidence-shadow);}
/* Full results table: break out of the 1180px content column so all 26
   columns fit without horizontal scroll on desktop. Capped at 1650px /
   viewport so it stays centered and readable on large monitors. */
.chart-panel.wide{
  box-sizing:border-box;
  width:min(1650px, 100vw - 32px);
  margin-inline:calc(50% - min(825px, 50vw - 16px));
  overflow-x:auto;
}
.chart-panel.wide .results-table{min-width:0; width:100%; font-size:10.5px;}
.chart-panel.wide .results-table th,
.chart-panel.wide .results-table td{padding:4px 4px;}
.chart-panel.wide .results-table .th-ch{font-size:9.5px;}
.chart-panel.wide .results-table .th-pol{font-size:11px;}
.chart-panel.wide #rtable-cap,
.chart-panel.wide .conclusion{max-width:none;}
.chart-panel h4{font-family:var(--mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--text-faint); margin:0 0 18px;}
.chart-panel .conclusion{margin-top:18px; padding-top:16px; border-top:1px solid var(--line); font-size:14px; color:var(--text-dim);}
.chart-panel .conclusion b{color:var(--cyan);}
.data-note{font-family:var(--mono); font-size:12px; color:var(--text-faint); margin-top:8px; display:flex; gap:8px; align-items:center;}
.heatmap-wrap{overflow-x:auto;}
/* ---------- Results comparison table ---------- */
.table-wrap{overflow-x:auto; margin:0 -4px; padding:0 4px;}
.results-table{border-collapse:separate; border-spacing:0; min-width:1040px; width:100%; font-size:12.5px;}
.results-table th,.results-table td{padding:7px 8px; text-align:center; border-bottom:1px solid var(--line); white-space:nowrap;}
.results-table thead th{font-family:var(--mono); font-size:11px; color:var(--text-dim); font-weight:600; border-bottom:1px solid var(--line-strong); background:var(--panel-2); position:sticky; top:0;}
.results-table .th-task,.results-table .th-emb{text-align:left;}
.results-table .th-pol{font-family:var(--display); font-size:13px; color:var(--bone); font-weight:700; border-bottom:1px solid var(--line); padding-bottom:4px;}
.results-table .th-ch{font-size:10.5px; color:var(--text-faint); letter-spacing:.04em;}
.results-table .task{text-align:left; color:var(--text); font-size:12.5px; position:relative;}
.results-table .tid{color:var(--cyan); margin-right:4px;}
.results-table .emb{text-align:left; color:var(--text-dim); font-family:var(--mono); font-size:11.5px; vertical-align:middle; border-right:1px solid var(--line);}
.results-table td.num{font-family:var(--mono); font-weight:600; cursor:default; border-radius:3px;}
.results-table tr.grp td{border-top:2px solid var(--line-strong);}
.results-table tr.grp .emb{border-top:2px solid var(--line-strong);}
.results-table tbody tr.result-row{cursor:pointer; outline:none;}
.results-table tbody tr.result-row:hover td,.results-table tbody tr.result-row.selected td,.results-table tbody tr.result-row:focus-visible td{background:rgba(41,79,146,.13); box-shadow:inset 0 0 0 999px rgba(41,79,146,.13),inset 0 1px 0 rgba(41,79,146,.16),inset 0 -1px 0 rgba(41,79,146,.16);}
.results-table tbody tr.result-row:hover td.task,.results-table tbody tr.result-row:hover td.emb,.results-table tbody tr.result-row.selected td.task,.results-table tbody tr.result-row.selected td.emb,.results-table tbody tr.result-row:focus-visible td.task,.results-table tbody tr.result-row:focus-visible td.emb{background:#e7edf7; color:var(--cyan);}
.results-table tbody td.emb.selected-emb,.results-table tbody td.emb.hover-emb{background:#e7edf7; color:var(--cyan); box-shadow:inset 0 0 0 999px rgba(41,79,146,.05),inset -1px 0 0 rgba(41,79,146,.2);}
.results-table tbody tr.result-row.selected td.task::before,.results-table tbody tr.result-row:focus-visible td.task::before{content:""; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--cyan);}
.results-table tr.mean{background:var(--panel-2);}
.results-table tr.mean td{border-top:2px solid var(--cyan); border-bottom:0;}
.results-table .mean-label{text-align:left; font-family:var(--mono); font-weight:600; color:var(--bone); font-size:12px;}
.results-table .mean-v{font-family:var(--mono); color:var(--bone); font-weight:700; background:transparent !important;}
.results-table .th-avg{color:var(--cyan);}
.results-table .th-lscr{color:var(--copper); border-right:1px solid var(--line-strong);}
.results-table td.lscr{font-family:var(--mono); font-weight:600; color:var(--copper); background:rgba(181,116,47,.07); border-right:1px solid var(--line-strong); cursor:default;}
.results-table td.lscr.unreported{color:var(--text-faint); background:transparent;}
.results-table td.mean-lscr{font-weight:700; background:rgba(181,116,47,.10) !important;}
.results-table .th-pol:not(:last-child){border-right:1px solid var(--line-strong);}
.results-table td.avg{font-family:var(--mono); font-weight:600; color:var(--cyan); background:rgba(41,79,146,.07); cursor:default;}
.results-table td.avg:hover{background:rgba(41,79,146,.14);}
.results-table td.mean-avg{color:var(--cyan); background:rgba(41,79,146,.10) !important; font-weight:700;}
.heatmap .htooltip{position:fixed; background:var(--bg-3); border:1px solid var(--line-strong); border-radius:var(--r-sm); padding:8px 11px; font-size:12px; color:var(--text); pointer-events:none; z-index:200; box-shadow:var(--shadow); opacity:0; transition:opacity .12s; max-width:240px;}
.retention-chart svg, .bar-chart svg{width:100%; height:auto; display:block;}

/* ---------- Resources ---------- */
.resource-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px;}
.resource-card{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); padding:20px; transition:border-color .2s,transform .2s,box-shadow .2s,background .2s; cursor:pointer; display:flex; flex-direction:column; gap:10px; text-decoration:none; color:inherit; box-shadow:var(--evidence-shadow); position:relative; overflow:hidden;}
.resource-card::before{content:""; position:absolute; inset:0 auto 0 0; width:3px; background:var(--cyan); transform:scaleY(0); transform-origin:center; transition:transform .2s;}
.resource-card:hover,.resource-card:focus-visible,.resource-card:active{border-color:var(--cyan); background:#f4f7fb; transform:translateY(-3px); box-shadow:0 8px 22px -10px rgba(24,28,27,.28), 0 20px 48px -16px rgba(24,28,27,.22); outline:none;}
.resource-card:hover::before,.resource-card:focus-visible::before,.resource-card:active::before{transform:scaleY(1);}
.resource-card .ic{width:34px; height:34px; border-radius:var(--r-sm); background:rgba(41,79,146,.1); border:1px solid rgba(41,79,146,.25); display:flex; align-items:center; justify-content:center; color:var(--cyan);}
.resource-card h4{margin:0; font-size:15.5px; color:var(--bone); font-family:var(--body); font-weight:600;}
.resource-card p{margin:0; font-size:13px; color:var(--text-dim); line-height:1.5; flex:1;}
.resource-card .meta{font-family:var(--mono); font-size:11px; color:var(--text-faint); display:flex; align-items:center; gap:6px; padding-top:8px; border-top:1px solid var(--line);}

/* ---------- Citation / footer ---------- */
.cite-box{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); overflow:hidden; box-shadow:var(--evidence-shadow);}
.cite-box pre{margin:0; padding:20px 24px; font-family:var(--mono); font-size:12.5px; color:var(--text); overflow-x:auto; line-height:1.6;}
.cite-box .actions{display:flex; gap:8px; padding:10px 16px; background:var(--bg-2); border-top:1px solid var(--line);}
.footer{background:var(--bg-2); border-top:1px solid var(--line); padding:clamp(40px,5vw,72px) 0 28px;}
.footer-grid{display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:clamp(24px,3vw,48px); margin-bottom:40px;}
.footer h5{font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--text-faint); margin:0 0 14px;}
.footer a{display:block; padding:4px 0; font-size:14px; color:var(--text-dim);}
.footer a:hover{color:var(--bone);}
.footer-bottom{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px; padding-top:24px; border-top:1px solid var(--line); font-family:var(--mono); font-size:12px; color:var(--text-faint);}
.footer-bottom .ver{color:var(--text-dim);}
.copy-toast{position:fixed; bottom:24px; left:50%; transform:translateX(-50%) translateY(20px); background:var(--green); color:var(--ink); padding:10px 18px; border-radius:999px; font-family:var(--mono); font-size:13px; opacity:0; pointer-events:none; transition:opacity var(--duration-medium),transform var(--duration-medium); z-index:120;}
.copy-toast.show{opacity:1; transform:translateX(-50%) translateY(0);}

/* ---------- Utility ---------- */
.hidden{display:none !important;}
.fade-in{opacity:0; transform:translateY(16px); transition:opacity .6s,transform .6s;}
.fade-in.in{opacity:1; transform:none;}
.checkmark{color:var(--green);}
.crossmark{color:var(--brick);}
.poster-ph{display:flex; align-items:flex-end; justify-content:center; overflow:hidden;}
.poster-ph img{filter:saturate(.92);}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr; min-height:auto; align-items:start;}
  .modalities{grid-template-columns:repeat(2,1fr);}
  .eval-tiers{grid-template-columns:repeat(2,1fr);}
  .resource-grid{grid-template-columns:repeat(2,1fr);}
  .evidence-band--protocol .eval-tier:nth-child(odd),
  .evidence-band--resources .resource-card:nth-child(odd){border-left:0;}
  .evidence-band--protocol .eval-tier:nth-child(n+3),
  .evidence-band--resources .resource-card:nth-child(n+3){border-top:1px solid var(--line-strong);}
  .proof-grid{grid-template-columns:repeat(3,1fr);}
  .proof-cell{border-bottom:1px solid var(--line);}
  .task-grid,.featured-only{grid-template-columns:repeat(3,1fr);}
  .atlas-grid{grid-template-columns:repeat(3,1fr);}
  .compare{grid-template-columns:1fr;}
  .compare .col{border-bottom:1px solid var(--line);}
  .compare .head{border-bottom:1px solid var(--line);}
  .compare .col.us .row{border-left:2px solid var(--cyan);}
  .nav-links{display:none;}
  .burger{display:flex;}
}
@media (max-width:900px){
  .hero.masthead{padding-top:clamp(34px,6vw,50px);}
  .masthead-grid{grid-template-columns:1fr; gap:32px;}
  .masthead-copy{max-width:660px;}
  .hero.masthead .hero-sub{max-width:26ch;}
  .hero.masthead .hero-desc{max-width:62ch;}
  .modal--duo{flex-direction:column; align-items:stretch; gap:14px; max-width:680px;}
  .modal-clip--media{width:100%;}
  .modal-clip--body{max-height:none; overflow:visible;}
  .modal-link{display:none;}
}
@media (max-width:760px){
  .section{padding:clamp(40px,10vw,56px) 0;}
  .evidence-band::before{top:22px; right:20px;}
  .section-head{margin-bottom:18px;}
  .section-head > .eyebrow{font-size:clamp(22px,5.5vw,27px); padding-right:10px;}
  .section-head h2{font-size:14px;}
  .nav-cta .icon-btn{display:none;}
  .hero h1{font-size:36px;}
  .rollout,.teleop-split,.tactile-wrap,.gen-axes{grid-template-columns:1fr;}
  .gen-grid{grid-template-columns:1fr;}
  .axis-grid,.axis-grid.two{grid-template-columns:repeat(2,1fr);}
  .task-grid,.featured-only{grid-template-columns:repeat(2,1fr);}
  .modalities,.eval-tiers,.resource-grid{grid-template-columns:1fr;}
  .evidence-band--protocol .eval-tier,
  .evidence-band--resources .resource-card{border-left:0; border-top:1px solid var(--line-strong);}
  .evidence-band--protocol .eval-tier:first-child,
  .evidence-band--resources .resource-card:first-child{border-top:0;}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
  .modal-stages .st{min-width:auto; flex:1 1 40%;}
  .modal-channels{grid-template-columns:repeat(2,1fr);}
  .atlas-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .nav-cta{gap:6px;}
  .hero.masthead .rlinks{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero.masthead .rlink:nth-child(3){border-left:0;}
  .hero.masthead .rlink:nth-child(n+3){border-top:1px solid var(--line);}
  .hero-evidence figcaption{font-size:12px;}
  .data-note{flex-wrap:wrap; align-items:flex-start;}
}
@media (max-width:440px){
  .proof-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .task-grid,.featured-only{grid-template-columns:1fr;}
  .axis-grid,.axis-grid.two{grid-template-columns:1fr;}
  .hero.masthead{padding:30px 0 36px;}
  .hero.masthead h1{font-size:32px;}
  .hero.masthead .hero-sub{font-size:22px;}
  .hero.masthead .hero-cta{align-items:stretch; flex-direction:column;}
  .hero.masthead .hero-cta .btn{justify-content:center; white-space:normal; text-align:center;}
  .evidence-index{grid-template-columns:repeat(2,minmax(0,1fr));}
  .evidence-index span{padding:8px; font-size:9px; overflow-wrap:anywhere;}
  .evidence-caption{padding-left:12px;}
  .cite-box .actions{flex-wrap:wrap;}
}

/* nav drawer */
.drawer{position:fixed; inset:0; z-index:90; background:rgba(255,255,255,.98); backdrop-filter:blur(10px); display:none; flex-direction:column; padding:20px 24px 24px; gap:2px; overflow:auto;}
.drawer.open{display:flex;}
.drawer-head{display:flex; align-items:center; justify-content:space-between; padding:6px 4px 18px; margin-bottom:6px; border-bottom:1px solid var(--line);}
.drawer-head .brand-name{font-family:var(--display); font-weight:700; font-size:22px; color:var(--bone); letter-spacing:-.02em;}
.drawer-close{width:38px; height:38px; border-radius:50%; border:1px solid var(--line-strong); background:transparent; color:var(--bone); font-size:22px; line-height:1; cursor:pointer;}
.drawer a{font-family:var(--mono); font-size:17px; color:var(--text); padding:14px 6px; border-bottom:1px solid var(--line); letter-spacing:.02em;}
.drawer a:hover{color:var(--cyan);}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important;}
  .hero-media .ph img{animation:none;}
  .timeline-needle{transition:none;}
}

/* ---------- Framed card: table/bar + inline caption note (keeps notes inside the box) ---------- */
.card-frame{background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); box-shadow:var(--evidence-shadow); overflow:hidden;}
.card-frame > .bm-table-wrap,
.card-frame > .lb-wrap{margin:0; padding:0;}
.card-frame .bm-table,
.card-frame .lb-table{border:0; border-radius:0; box-shadow:none;}
.card-frame .eval-stages{border:0; border-radius:0; box-shadow:none;}
.card-frame .evidence-caption{margin:0; padding:14px 16px; border-top:1px solid var(--line); background:var(--panel);}

/* ---------- Four evaluation channels (None / Equi. / Inv. / Full) ---------- */
.channel-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:4px 0 10px;}
.channel-card{position:relative; overflow:hidden; background:var(--panel); border:var(--frame-border); border-radius:var(--evidence-radius); padding:18px 18px 16px; box-shadow:var(--evidence-shadow);}
.channel-card .ch-bar{position:absolute; top:0; left:0; right:0; height:3px; background:var(--ch, var(--metal));}
.channel-card .ch-name{display:block; font-family:var(--display); font-weight:700; font-size:18px; color:var(--ch, var(--bone)); margin:4px 0 6px; letter-spacing:-.01em;}
.channel-card .ch-desc{display:block; font-size:13px; color:var(--text-dim); line-height:1.5;}
.channel-card.ch-none{--ch:#9AA3A0;}
.channel-card.ch-equi{--ch:#C77E1A;}
.channel-card.ch-inv{--ch:#1E94A6;}
.channel-card.ch-full{--ch:#6B4FB0;}
@media (max-width:760px){ .channel-grid{grid-template-columns:repeat(2,1fr);} }

/* ============================================================
   Centered project masthead: an editorial title block,
   a continuous demo surface, and the benchmark proof strip.
   ============================================================ */
.hero.hero-centered{
  isolation:isolate;
  padding:clamp(30px,4vw,58px) 0 0;
  background:
    radial-gradient(68% 86% at 50% 0%,rgba(41,79,146,.14),transparent 72%),
    radial-gradient(42% 62% at 14% 38%,rgba(180,72,39,.08),transparent 74%),
    linear-gradient(155deg,#edf1f3 0%,#f7f6f2 55%,#eeede8 100%);
}
.hero-atmosphere{position:absolute; inset:0; z-index:-1; overflow:hidden; pointer-events:none;}
.hero-atmosphere::before{
  content:""; position:absolute; width:min(82vw,1100px); height:min(52vw,700px); left:50%; top:-46%;
  transform:translateX(-50%); border-radius:50%; border:1px solid rgba(41,79,146,.13);
  box-shadow:0 0 0 55px rgba(41,79,146,.035),0 0 0 110px rgba(41,79,146,.025),0 0 0 165px rgba(41,79,146,.018);
  animation:hero-halo 12s ease-in-out infinite;
}
.hero-atmosphere span{position:absolute; width:6px; height:6px; border-radius:50%; background:var(--copper); opacity:.6; animation:hero-spark 6s ease-in-out infinite;}
.hero-atmosphere span:nth-child(1){left:13%; top:34%; animation-delay:-1s;}
.hero-atmosphere span:nth-child(2){right:16%; top:20%; background:var(--cyan); animation-delay:-3s;}
.hero-atmosphere span:nth-child(3){right:28%; top:44%; width:4px; height:4px; animation-delay:-5s;}
.hero-atmosphere::after{content:""; position:absolute; left:-14%; right:-14%; top:43%; height:1px; background:linear-gradient(90deg,transparent 0%,rgba(41,79,146,.04) 24%,rgba(41,79,146,.28) 50%,rgba(180,72,39,.16) 66%,transparent 100%); transform:rotate(-4deg); animation:hero-scan 10s ease-in-out infinite;}
.hero.hero-centered .hero-content{position:relative; max-width:980px; margin:0 auto; text-align:center;}
.sr-only{position:absolute !important; width:1px !important; height:1px !important; padding:0 !important; margin:-1px !important; overflow:hidden !important; clip:rect(0,0,0,0) !important; white-space:nowrap !important; border:0 !important;}
.hero-centered .hero-logo{display:block; margin:0 auto clamp(6px,1vw,11px); max-width:min(100%,600px); width:100%; height:auto;}
.hero-centered .hero-subtitle{
  font-family:var(--display); font-weight:650; font-size:clamp(21px,2.5vw,31px); line-height:1.22;
  color:var(--bone); max-width:58ch; margin:0 auto clamp(12px,1.5vw,18px);
}
.hero-centered .hero-contributors{max-width:960px; min-height:54px; margin:0 auto clamp(14px,1.8vw,22px); padding:9px 18px 8px; border-top:1px solid var(--line-strong); border-bottom:1px solid var(--line);}
.hero-centered .hero-author-slot{margin:0 0 5px; font-family:var(--body); font-size:clamp(14px,1.35vw,17px); font-weight:600; color:var(--text-dim); letter-spacing:.01em;}
.hero-centered .hero-affiliation-slot{margin:0; font-family:var(--mono); font-size:11px; line-height:1.45; color:var(--text-faint); letter-spacing:.035em;}
.hero-centered .cta{display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:9px;}
.hero-centered .cta .btn{min-height:42px; padding:10px 16px; font-family:var(--body); font-size:13px; font-weight:600; letter-spacing:.01em;}
.hero-centered .cta .btn-resource{background:rgba(255,255,255,.78); border-color:rgba(21,32,30,.2); box-shadow:0 7px 18px -16px rgba(22,35,33,.42);}
.hero-centered .cta .btn-resource:hover{border-color:var(--cyan); background:#fff; transform:translateY(-2px);}
.hero-centered .cta .btn-resource small{font-family:var(--mono); font-size:8px; font-weight:600; letter-spacing:.05em; color:var(--text-faint); text-transform:uppercase;}
.hero-centered .cta .is-unavailable{opacity:.56; cursor:default;}
.hero-centered .cta .is-unavailable:hover{border-color:rgba(21,32,30,.2); background:rgba(255,255,255,.78); transform:none;}
/* The final unavailable resource is the legacy ModelScope placeholder. */
.hero-centered .cta > span.btn-resource.is-unavailable:last-of-type{display:none;}
.hero-centered .btn-mark{position:relative; display:inline-block; flex:0 0 13px; width:13px; height:13px; color:var(--cyan);}
.hero-centered .mark-doc{border:1.5px solid currentColor; border-radius:2px;}
.hero-centered .mark-doc::before,.hero-centered .mark-doc::after{content:""; position:absolute; left:2px; right:2px; height:1px; background:currentColor;}
.hero-centered .mark-doc::before{top:4px;}.hero-centered .mark-doc::after{top:7px; right:4px;}
.hero-centered .btn-mark path{fill:currentColor;}
.hero-centered .mark-arxiv{color:#B31B1B;}
.hero-centered .mark-github{color:#181717;}
.hero-centered .mark-hf{color:#FFD21E;}
.hero-centered .mark-ms{color:#624AFF;}
.hero-centered .mark-code{border:1.5px solid var(--metal); border-radius:3px;}
.hero-centered .mark-code::before,.hero-centered .mark-code::after{content:""; position:absolute; width:3px; height:3px; top:3px; border-color:var(--metal); border-style:solid; transform:rotate(45deg);}
.hero-centered .mark-code::before{left:1px; border-width:0 0 1px 1px;}.hero-centered .mark-code::after{right:1px; border-width:1px 1px 0 0;}
.hero-centered .btn-arrow{display:inline-grid; place-items:center; width:17px; height:17px; margin-left:1px; border-radius:50%; background:rgba(255,255,255,.2); font-size:14px; line-height:1; transition:transform var(--duration-fast),background var(--duration-fast);}
.hero-centered .btn-primary:hover .btn-arrow{transform:translateX(2px); background:rgba(255,255,255,.3);}
.hero.hero-centered .hero-proof{margin-top:clamp(20px,2.8vw,34px); border-top:1px solid var(--line-strong); border-bottom:1px solid var(--line-strong); background:rgba(247,248,249,.86);}
.hero.hero-centered .hero-proof .proof-grid{max-width:var(--maxw);}
.hero.hero-centered .hero-proof .proof-cell{padding-top:clamp(11px,1.25vw,15px); padding-bottom:clamp(11px,1.25vw,15px);}
.hero.hero-centered .hero-banner{margin-top:clamp(28px,3.5vw,46px);}
.hero.hero-centered .hero-evidence{margin:0; max-width:100%;}
.hero-centered .hero-evidence-frame{box-shadow:0 26px 60px -42px rgba(22,35,33,.52);}
.hero-centered .hero-content > :not(.sr-only),.hero-centered .hero-proof,.hero-centered .hero-banner{animation:hero-enter .7s cubic-bezier(.2,.75,.2,1) both;}
.hero-centered .hero-logo{animation-delay:.08s;}
.hero-centered .hero-subtitle{animation-delay:.18s;}
.hero-centered .hero-contributors{animation-delay:.26s;}
.hero-centered .cta{animation-delay:.34s;}
.hero-centered .hero-proof{animation-delay:.42s;}
.hero-centered .hero-banner{animation-delay:.5s;}
@keyframes hero-enter{from{opacity:0; transform:translateY(16px);}to{opacity:1; transform:translateY(0);}}
@keyframes hero-halo{0%,100%{transform:translateX(-50%) scale(1); opacity:.62;}50%{transform:translateX(-50%) scale(1.04); opacity:1;}}
@keyframes hero-spark{0%,100%{transform:translateY(0); opacity:.28;}50%{transform:translateY(-12px); opacity:.82;}}
@keyframes hero-scan{0%,100%{transform:translateX(-4%) rotate(-4deg); opacity:.2;}50%{transform:translateX(4%) rotate(-4deg); opacity:.72;}}