:root{
  --bg:#0c0e11; --panel:rgba(19,22,27,.78); --panel-2:rgba(19,22,27,.94);
  --line:rgba(255,255,255,.10); --line-2:rgba(255,255,255,.18);
  --ink:#f4f6f7; --ink-2:#cbd2d6; --muted:#717b85;
  --accent:#c6ff3a; --accent-ink:#d9ff78; --accent-dk:#5f8a00; --accent-2:#e8edf0; --link:#d9ff78;
  --radius:8px; --max:1080px; --font:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
@media (prefers-reduced-motion: no-preference){html{scroll-behavior:smooth}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0}
body{position:relative;isolation:isolate;margin:0;min-height:100vh;overflow-x:hidden;
  background:linear-gradient(155deg,#0c0e11 0%,#101511 45%,#151713 100%);
  color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    repeating-linear-gradient(115deg,rgba(198,255,58,.048) 0 1px,transparent 1px 92px),
    repeating-linear-gradient(25deg,rgba(232,237,240,.026) 0 1px,transparent 1px 118px),
    linear-gradient(180deg,rgba(198,255,58,.070),transparent 34%,rgba(198,255,58,.024));
  background-size:220px 220px,260px 260px,100% 100%;
  opacity:.72}
body::after{content:"";position:fixed;inset:-20% 0;z-index:-1;pointer-events:none;
  background:linear-gradient(100deg,transparent 0%,transparent 43%,rgba(198,255,58,.060) 49%,
    rgba(232,237,240,.030) 52%,transparent 61%,transparent 100%);
  transform:translateX(-120%);opacity:.46}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;margin:0;font-weight:600;letter-spacing:0}
.muted{color:var(--muted)}
em{font-style:normal;color:var(--accent-ink)}
code{font-family:var(--mono);font-size:.85em;color:var(--ink-2);
  background:var(--panel);padding:1px 6px;border-radius:6px;word-break:break-all}

/* nav */
.nav{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;background:rgba(12,14,17,.82);backdrop-filter:blur(14px);border-bottom:1px solid #1b1f24}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:600;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;place-items:center;width:32px;height:32px;filter:drop-shadow(0 0 14px rgba(198,255,58,.22))}
.brand-mark svg{width:100%;height:100%;display:block}
.logo-accent{stroke:var(--accent)}
.logo-ring{stroke:var(--accent-2)}
.logo-dot{fill:var(--accent)}
.brand-name{display:flex;align-items:baseline;gap:6px;font-size:21px;line-height:1;color:var(--ink);font-weight:700}
.brand-name em{font-style:normal;color:var(--accent);font-weight:400}
.nav-links{display:flex;align-items:center;gap:26px;font-family:var(--mono);font-size:13px;font-weight:500}
.nav-links a{color:#8b939b}
.nav-links a:hover{color:var(--ink);text-decoration:none}
.nav-links .nav-cta{font-family:var(--font);font-weight:600;color:#0c0e11;background:var(--accent);padding:8px 16px;border-radius:8px}
.nav-links .nav-cta:hover{color:#0c0e11;background:#d7ff65}

/* hero */
.hero{position:relative;isolation:isolate;max-width:1280px;margin:0 auto;padding:78px 24px 36px;text-align:center}
.hero>*{position:relative;z-index:1}
.hero::before{content:"";position:absolute;left:50%;top:22px;z-index:0;width:min(880px,calc(100% - 48px));height:340px;
  transform:translateX(-50%);border:1px solid rgba(198,255,58,.10);border-radius:8px;
  background:
    linear-gradient(90deg,transparent 0%,transparent 48%,rgba(198,255,58,.075) 50%,transparent 52%,transparent 100%),
    repeating-linear-gradient(90deg,rgba(198,255,58,.036) 0 1px,transparent 1px 72px),
    repeating-linear-gradient(0deg,rgba(232,237,240,.022) 0 1px,transparent 1px 72px);
  mask-image:linear-gradient(180deg,#000 0%,#000 62%,transparent 100%);
  opacity:.56}
.hero::after{content:"";position:absolute;left:50%;top:60px;z-index:0;width:min(710px,calc(100% - 76px));height:215px;
  transform:translateX(-50%) rotate(-2deg);border:1px solid rgba(198,255,58,.12);border-radius:8px;
  box-shadow:0 0 70px rgba(198,255,58,.050),inset 0 0 70px rgba(198,255,58,.024);opacity:.30}
.eyebrow{margin:0 0 24px;text-transform:uppercase;letter-spacing:.32em;font-family:var(--mono);font-size:15px;color:var(--accent);font-weight:700}
.hero h1{max-width:1120px;margin:0 auto;font-size:clamp(40px,5.2vw,72px);font-weight:730;letter-spacing:0}
.lede{max-width:820px;margin:22px auto 0;font-size:clamp(17px,2.1vw,21px);color:var(--ink-2)}
.hero-cta{display:flex;gap:12px;justify-content:center;margin:26px 0 6px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 20px;border-radius:8px;border:1px solid var(--line-2);
  color:var(--ink);font-size:15px;font-weight:560;transition:border-color .15s,background .15s,transform .15s}
.btn:hover{border-color:rgba(255,255,255,.30);text-decoration:none;background:rgba(255,255,255,.06);transform:translateY(-1px)}
.btn-primary{background:var(--accent);border-color:rgba(198,255,58,.70);color:#0c0e11}
.btn-primary:hover{background:#d7ff65;border-color:#d7ff65}
.hero-stats{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.stat{background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.025));border:1px solid var(--line);
  border-radius:var(--radius);padding:13px 18px;min-width:150px;box-shadow:0 18px 70px rgba(0,0,0,.18)}
.stat .v{font-size:28px;font-weight:750;letter-spacing:0;font-variant-numeric:tabular-nums}
.stat .k{font-size:12.5px;color:var(--muted);margin-top:2px}
.stat .v.accent{color:var(--accent-ink)}

/* sections */
.section{max-width:var(--max);margin:0 auto;padding:46px 24px}
.section-head{margin-bottom:24px}
.section-head h2{font-size:clamp(24px,4vw,32px)}
.section-sub{margin:8px 0 0;color:var(--ink-2);max-width:840px}

/* chart + table */
.vtabs{display:inline-flex;gap:4px;background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:8px;padding:4px;margin-bottom:14px}
.vtab{appearance:none;background:transparent;border:0;color:var(--ink-2);font:inherit;font-size:14px;padding:7px 16px;border-radius:7px;cursor:pointer;transition:.15s}
.vtab:hover{color:var(--ink)}
.vtab.active{background:var(--accent);color:#0c0e11;font-weight:700}
.vtab:focus-visible{outline:2px solid var(--accent-ink);outline-offset:2px}
#variant-summary{margin:0 0 14px;max-width:700px}
#variant-summary:empty{display:none}
.legend{display:flex;flex-wrap:wrap;gap:18px;margin-bottom:12px;font-size:13px;color:var(--ink-2)}
.leg{display:flex;align-items:center;gap:7px}
.chart{width:100%;height:500px;background:linear-gradient(180deg,rgba(19,22,27,.90),rgba(12,14,17,.86));
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 30px 110px rgba(0,0,0,.28),inset 0 1px 0 rgba(255,255,255,.035)}
.table-wrap{margin-top:22px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(8,11,12,.56);box-shadow:0 22px 90px rgba(0,0,0,.16)}
table{border-collapse:collapse;width:100%;font-size:14px}
thead th{position:sticky;top:0;background:var(--panel-2);color:var(--muted);font-weight:560;
  text-align:left;padding:11px 16px;border-bottom:1px solid var(--line);white-space:nowrap;user-select:none}
thead th.num{text-align:right}
thead th[data-sort]{cursor:pointer}
thead th[data-sort]:hover{color:var(--ink)}
thead th[data-sort]:focus-visible{outline:2px solid var(--accent-ink);outline-offset:-2px;color:var(--ink)}
thead th.sorted::after{content:" ↓";color:var(--accent-ink)}
thead th.sorted.asc::after{content:" ↑"}
tbody td{padding:11px 16px;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(255,255,255,.045)}
td.num{text-align:right}
td.model{font-weight:500;color:var(--ink)}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:9px;vertical-align:1px}
.score{color:var(--accent-ink);font-weight:600}
.tag{font-size:11px;color:var(--muted);border:1px solid var(--line-2);border-radius:5px;padding:1px 6px;margin-left:8px}
.updated{margin-top:16px;font-size:12.5px}

/* why ari */
.why-section{max-width:1180px}
.cards{display:grid;gap:18px}
.card{position:relative;display:grid;grid-template-columns:minmax(0,420px) minmax(360px,1fr);align-items:center;gap:28px;overflow:hidden;
  min-height:280px;background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--accent),transparent);opacity:.75}
.card:nth-child(even){grid-template-columns:minmax(360px,1fr) minmax(0,420px)}
.card:nth-child(even) .card-copy{order:2}
.card:nth-child(even) .why-graphic{order:1}
.card-copy{position:relative;z-index:1}
.card-ic{font-family:var(--mono);font-size:13px;color:var(--accent);margin-bottom:12px;font-weight:800}
.card h3{font-size:clamp(22px,3vw,34px);margin-bottom:10px}
.card p{margin:0;color:var(--ink-2);font-size:15.5px;max-width:470px}
.why-graphic{position:relative;z-index:1;min-height:220px;border:1px solid rgba(255,255,255,.08);border-radius:8px;
  background:
    linear-gradient(135deg,rgba(198,255,58,.08),rgba(232,237,240,.025) 48%,rgba(12,14,17,.24)),
    radial-gradient(circle at 50% 45%,rgba(198,255,58,.08),transparent 46%);
  overflow:hidden;user-select:none;-webkit-user-select:none}
.why-graphic::before{content:"";position:absolute;inset:0;background:
  repeating-linear-gradient(90deg,rgba(255,255,255,.025) 0 1px,transparent 1px 64px),
  repeating-linear-gradient(0deg,rgba(255,255,255,.020) 0 1px,transparent 1px 64px);opacity:.75}
.why-graphic svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.grid-line,.scan{fill:none;stroke:rgba(232,237,240,.10);stroke-width:1}
.muted-path,.accent-path{fill:none;stroke-width:7;stroke-linecap:round;stroke-linejoin:round}
.muted-path{stroke:rgba(232,237,240,.36)}
.accent-path{stroke:var(--accent);filter:drop-shadow(0 0 10px rgba(198,255,58,.18))}
.threshold{fill:none;stroke:rgba(198,255,58,.28);stroke-width:2;stroke-dasharray:7 9}
.human-label{font-family:var(--mono);font-size:18px;font-weight:700;letter-spacing:.08em;fill:var(--accent);
  filter:drop-shadow(0 0 10px rgba(198,255,58,.22))}
.model-label{font-family:var(--mono);font-size:15px;font-weight:700;letter-spacing:.08em;fill:#e8edf0;opacity:.76}
.node{filter:drop-shadow(0 0 10px rgba(198,255,58,.18))}
.accent-node{fill:var(--accent)}
.muted-node{fill:#e8edf0;opacity:.7}
.dim-node{opacity:.42}
.small-node{opacity:.85}
.parity-graphic{min-height:0;aspect-ratio:520/320;background:
  radial-gradient(120% 120% at 70% 0%,rgba(198,255,58,.065),rgba(13,17,11,.52) 55%,rgba(11,13,10,.72) 100%)}
.parity-graphic svg{position:relative;display:block;height:auto;aspect-ratio:520/320}
.parity-graphic .muted-path{stroke:#7f8a93;stroke-width:3;opacity:1}
.parity-graphic .accent-path{stroke:var(--accent);stroke-width:3.5;filter:drop-shadow(0 0 6px rgba(198,255,58,.40))}
.parity-graphic .threshold{stroke:#6f7a84;stroke-width:1.5;stroke-dasharray:4 5}
.parity-graphic .model-label{font-size:12px;letter-spacing:0;fill:#8b949c;opacity:1}
.parity-graphic .human-label{font-size:11px;letter-spacing:.14em;fill:#aeb6bd;filter:none}
.parity-graphic .muted-node{fill:#9aa3aa;opacity:1;filter:none}
.parity-graphic .dim-node{fill:#7f8a93;opacity:.6}
.parity-graphic .accent-node{fill:var(--accent);filter:drop-shadow(0 0 8px rgba(198,255,58,.53))}
.parity-graphic .small-node{filter:none}
.loop-graphic{display:grid;place-items:center}
.loop-asset{position:relative;z-index:1;width:min(210px,64%);height:auto;display:block;filter:drop-shadow(0 0 18px rgba(198,255,58,.18))}
.frame,.hidden{fill:rgba(12,14,17,.50);stroke:rgba(232,237,240,.22);stroke-width:2}
.hidden{fill:rgba(198,255,58,.10);stroke:rgba(198,255,58,.32)}
.bracket{fill:none;stroke:#e8edf0;stroke-width:8;stroke-linecap:round;stroke-linejoin:round;opacity:.82}
.frontier-block{position:relative;overflow:hidden;margin:28px 0 0;border:1px solid var(--line);
  border-radius:var(--radius);background:linear-gradient(180deg,rgba(198,255,58,.045),rgba(255,255,255,.020) 54%,rgba(198,255,58,.055));
  box-shadow:0 30px 110px rgba(0,0,0,.20)}
.frontier-block::before{content:"";position:absolute;inset:0;pointer-events:none;background:
  repeating-linear-gradient(90deg,rgba(255,255,255,.020) 0 1px,transparent 1px 80px),
  repeating-linear-gradient(0deg,rgba(255,255,255,.016) 0 1px,transparent 1px 80px);
  opacity:.72}
.frontier-separator{position:relative;overflow:hidden;margin:0;padding:54px 22px 44px;text-align:center}
.frontier-separator::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(90deg,transparent,rgba(198,255,58,.13),transparent),
    repeating-linear-gradient(90deg,rgba(255,255,255,.018) 0 1px,transparent 1px 80px);
  opacity:.58}
.frontier-separator h3{position:relative;z-index:1;max-width:900px;margin:0 auto;font-size:clamp(38px,7vw,78px);
  line-height:1.02;font-weight:760}
.method-band{position:relative;z-index:1;margin:0;padding:28px 32px 30px;
  background:linear-gradient(135deg,rgba(198,255,58,.11),rgba(232,237,240,.048) 60%,rgba(95,138,0,.09))}
.method-band h3{font-size:20px}
.method-band p{max-width:780px;margin:8px 0 0;color:var(--ink-2)}
.method-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;list-style:none;margin:18px 0 0;padding:0}
.method-list li{border-top:1px solid var(--line-2);padding-top:12px;color:var(--ink);font-size:14px}
.how-foot{margin-top:22px;font-size:13px}

/* footer */
.footer{max-width:var(--max);margin:40px auto 56px;padding:24px;border-top:1px solid var(--line);
  color:var(--muted);font-size:14px;text-align:center}
.footer a{color:var(--ink-2)}
.footer a:hover{color:var(--accent);text-decoration:none}
.footer .sep{margin:0 10px;color:var(--line-2)}

/* legal pages */
.legal-main{max-width:var(--max);margin:0 auto;padding:72px 24px 24px}
.legal-hero{max-width:780px;margin-bottom:32px}
.legal-hero .eyebrow{margin-bottom:14px;font-size:12px}
.legal-hero h1{font-size:clamp(34px,6vw,58px)}
.legal-updated{margin:14px 0 0;color:var(--muted);font-size:14px}
.legal-content{display:grid;gap:22px;max-width:850px}
.legal-section{border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.018));padding:24px}
.legal-section h2{font-size:22px;margin-bottom:8px}
.legal-section p{margin:0;color:var(--ink-2)}
.legal-section p+p{margin-top:12px}
.legal-section ul{margin:12px 0 0;padding-left:20px;color:var(--ink-2)}
.legal-section li+li{margin-top:8px}

/* cookie notice */
.cookie-notice{position:fixed;left:50%;bottom:18px;z-index:50;display:flex;align-items:center;gap:16px;
  width:min(760px,calc(100% - 32px));padding:14px 14px 14px 16px;border:1px solid rgba(255,255,255,.16);
  border-radius:8px;background:rgba(12,14,17,.94);box-shadow:0 22px 80px rgba(0,0,0,.34);
  backdrop-filter:blur(14px);transform:translateX(-50%);transition:opacity .18s ease,transform .18s ease}
.cookie-notice.is-hiding{opacity:0;transform:translateX(-50%) translateY(10px)}
.cookie-notice p{margin:0;color:var(--ink-2);font-size:13px;line-height:1.45}
.cookie-notice a{color:var(--accent-ink)}
.cookie-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.cookie-notice button{appearance:none;border:1px solid rgba(198,255,58,.72);border-radius:8px;
  background:var(--accent);color:#0c0e11;font:600 13px var(--font);padding:9px 14px;cursor:pointer}
.cookie-notice button:hover{background:#d7ff65}
.cookie-notice button:focus-visible{outline:2px solid var(--accent-ink);outline-offset:2px}
.cookie-notice .cookie-secondary{background:transparent;border-color:var(--line-2);color:var(--ink-2)}
.cookie-notice .cookie-secondary:hover{background:rgba(255,255,255,.06);color:var(--ink)}

@media (prefers-reduced-motion: no-preference){
  body::before{animation:fieldDrift 34s linear infinite}
  body::after{animation:scanField 18s ease-in-out infinite}
  .hero::after{animation:loopPulse 12s ease-in-out infinite}
  .eyebrow,.hero h1,.lede,.hero-cta,.hero-stats,.section-head,.vtabs,#variant-summary,.legend,.chart,.table-wrap,.cards,.frontier-block,.how-foot{
    animation:fadeUp .65s ease both}
  .hero h1{animation-delay:.05s}
  .lede{animation-delay:.1s}
  .hero-cta{animation-delay:.14s}
  .hero-stats{animation-delay:.18s}
  .chart{animation-delay:.08s}
}

@keyframes fieldDrift{
  from{background-position:0 0,0 0,0 0}
  to{background-position:220px 160px,-260px 130px,0 0}
}
@keyframes scanField{
  0%,34%{transform:translateX(-120%)}
  68%,100%{transform:translateX(120%)}
}
@keyframes loopPulse{
  0%,100%{opacity:.32;transform:translateX(-50%) rotate(-2deg) scale(.98)}
  50%{opacity:.56;transform:translateX(-50%) rotate(-2deg) scale(1.02)}
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:translateY(0)}
}

@media (max-width:880px){
  .card,.card:nth-child(even){grid-template-columns:1fr;gap:20px}
  .card:nth-child(even) .card-copy,.card:nth-child(even) .why-graphic{order:initial}
}

@media (max-width:560px){
  .nav{padding:12px 18px}
  .brand-name{display:none}
  .nav-links{gap:16px}
  .nav-links .nav-cta{display:none}
  .hero{padding:42px 16px 24px}
  .hero::before{width:calc(100% - 28px);height:360px}
  .hero::after{width:calc(100% - 56px)}
  .eyebrow{margin-bottom:14px;font-size:11px;letter-spacing:.24em}
  .hero h1{font-size:clamp(36px,10vw,48px)}
  .lede{margin-top:14px;font-size:16px}
  .hero-cta{margin-top:20px}
  .btn{padding:10px 14px}
  .hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:18px}
  .stat{min-width:0;padding:10px 8px}
  .stat .v{font-size:21px}
  .stat .k{font-size:10.5px;line-height:1.25}
  .section{padding:34px 18px}
  .chart{height:410px}
  .cards{gap:14px}
  .card,.card:nth-child(even){grid-template-columns:1fr;gap:18px;min-height:auto;padding:22px}
  .card:nth-child(even) .card-copy,.card:nth-child(even) .why-graphic{order:initial}
  .why-graphic{min-height:180px}
  .frontier-block{margin-top:18px}
  .frontier-separator{padding:40px 14px 34px}
  .frontier-separator h3{font-size:clamp(34px,11vw,52px)}
  .method-band{padding:22px}
  .method-list{grid-template-columns:1fr}
  .legal-main{padding:46px 18px 18px}
  .legal-section{padding:20px}
  .cookie-notice{align-items:stretch;flex-direction:column;gap:12px;bottom:12px;width:calc(100% - 24px)}
  .cookie-actions{width:100%;display:grid;grid-template-columns:1fr 1fr}
  .cookie-notice button{width:100%}
}