:root{color-scheme:dark;--bg:#0b1015;--card:#121a21;--ink:#eef2f5;--muted:#9aaab6;--line:#28343e;--soft:#1a252d;--up:#baf766;--down:#ff929c;--accent:#c4fa73;--accent-ink:#16210c;--warn:#e9c47b;--shadow:none}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:30px}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.65 Inter,system-ui,-apple-system,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-underline-offset:4px}
button,input{font:inherit}
button,a,input,summary{-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
a:hover{color:var(--accent)}
main{max-width:1220px;margin:0 auto;padding:0 36px 72px}
.disclaimer{margin:0;background:#152019;color:#b4c6b1;border-bottom:1px solid #283c2a;text-align:center;font-size:11px;letter-spacing:.03em;padding:8px 16px}
.note-dot,.live-dot{display:inline-block;width:6px;height:6px;background:var(--accent);border-radius:50%;margin-right:8px}
.loading{padding:100px 0;color:var(--muted);text-align:center}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:27px 0;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:.04em;text-decoration:none}
.brand-icon{display:grid;place-items:center;background:var(--accent);color:var(--accent-ink);height:32px;width:32px;border-radius:8px;font-size:24px}
.brand-sub{font-size:9px;letter-spacing:.14em;color:var(--muted);font-weight:500;margin-left:7px;padding-left:17px;border-left:1px solid var(--line)}
.nav-links{display:flex;gap:27px}
.nav-links a,.nav-code{font-size:12px;text-decoration:none;color:#bac5cd}
.nav-code{border:1px solid var(--line);border-radius:7px;padding:7px 13px}
h1{font-size:clamp(44px,5.3vw,72px);line-height:1.06;margin:17px 0 23px;letter-spacing:-.055em;font-weight:800}
h1 span{color:var(--accent)}
h2{font-size:26px;line-height:1.3;margin:0 0 9px;letter-spacing:-.035em;font-weight:700}
h3{font-size:16px;line-height:1.4;margin:0 0 5px}
.eyebrow{font-size:10px;letter-spacing:.13em;font-weight:600;color:var(--muted);margin:0 0 10px}
.hero{display:grid;grid-template-columns:1.35fr 1fr;align-items:center;gap:80px;padding:65px 0 40px}
.hero .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:57ch;margin:0 0 25px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;gap:22px;align-items:center;padding:11px 17px;border-radius:7px;background:transparent;border:1px solid var(--line);font-size:12px;font-weight:600;text-decoration:none;color:var(--ink);cursor:pointer}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn:hover{border-color:var(--accent)}
.updated{font-size:10px;color:var(--muted);margin:18px 0 0}
.experiment-card{background:radial-gradient(ellipse at 100% 0%,#243625 0,transparent 65%),var(--card);border:1px solid #344538;border-radius:16px;padding:27px;position:relative;overflow:hidden}
.experiment-top{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:10px;letter-spacing:.12em;color:var(--muted)}
.experiment-top .pill{background:#263a22;color:var(--accent);letter-spacing:0;font-size:10px}
.experiment-card h2{font-size:35px;line-height:1.15;letter-spacing:-.04em;margin:30px 0 12px}
.experiment-card>p{font-size:13px;color:var(--muted);margin:0 0 30px}
.experiment-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding-bottom:23px;border-bottom:1px solid var(--line)}
.experiment-stats b{display:block;font-size:25px;font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.experiment-stats span{display:block;color:var(--muted);font-size:10px}
.next-session{display:grid;grid-template-columns:1fr auto;gap:3px;padding-top:20px;font-size:11px}
.next-session>span,.next-session small{color:var(--muted)}
.next-session small{grid-column:1/-1;font-size:10px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;border-bottom:1px solid var(--line);padding:10px 0 30px;margin:0}
.step{display:flex;gap:14px}
.step .n{font-size:11px;font-weight:500;color:var(--accent);padding-top:2px}
.step h3{font-size:12px}
.step p{font-size:11px;color:var(--muted);margin:0;line-height:1.7}
section{margin-top:53px}
.sub{color:var(--muted);font-size:13px;max-width:85ch;margin:0 0 22px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}
.text-link{font-size:11px;text-decoration:none;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:21px}
.grid{display:grid;gap:12px}
.cols5{grid-template-columns:repeat(auto-fit,minmax(175px,1fr))}
.who{border-top:2px solid var(--c)}
.who .tag{display:block;font-size:9px;letter-spacing:.02em;color:var(--muted);margin-bottom:15px;min-height:29px;line-height:1.6}
.who p{font-size:12px;color:var(--muted);line-height:1.8;margin:10px 0 0}
.who .when{margin-top:17px;font-size:10px}
.dot{display:inline-block;flex-shrink:0;width:7px;height:7px;border-radius:50%;background:var(--c);margin-right:7px}
.pill{display:inline-block;border-radius:5px;background:var(--soft);padding:3px 7px;font-size:10px;font-weight:500;color:var(--muted)}
.pill.in{background:#21351d;color:var(--up)}
.pill.waiting{color:var(--warn);background:#332b1f}
.pill.missed,.pill.rejected,.pill.late,.pill.partial{background:#37232b;color:var(--down)}
.tabs{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:17px}
.seg{display:inline-flex;flex-wrap:wrap;gap:2px;border:1px solid var(--line);background:var(--card);border-radius:8px;padding:4px}
.seg button{border:0;background:none;color:var(--muted);font-size:11px;font-weight:500;border-radius:5px;padding:7px 12px;cursor:pointer}
.seg button[aria-pressed=true]{background:#2c3e25;color:var(--accent)}
.seg button:hover{color:var(--ink)}
.amt{margin-left:auto;font-size:11px;color:var(--muted)}
.amt input{width:78px;padding:7px 8px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--ink)}
.podium{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:16px}
.pod{border-top:2px solid var(--c)}
.pod .rank{font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.pod .big{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.04em;margin-top:8px;font-variant-numeric:tabular-nums}
.kv{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;font-size:10px;margin-top:20px}
.kv div{display:flex;justify-content:space-between;gap:7px}
.kv span{color:var(--muted)}
.kv b{font-weight:500}
.up{color:var(--up)}
.down{color:var(--down)}
.mut{color:var(--muted)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--card)}
table{border-collapse:collapse;width:100%;font-size:12px;min-width:620px}
th,td{padding:14px 16px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap;font-variant-numeric:tabular-nums}
th:first-child,td:first-child,th.l,td.l{text-align:left}
th{font-weight:500;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.06em;background:#172129}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#172129}
.chartbox{padding:24px 20px 16px;background:linear-gradient(180deg,#152029,var(--card));border-color:#34424d}
.chartwrap{position:relative}
.chartbox svg{width:100%;height:auto;display:block;touch-action:pan-y;max-height:380px}
.legend{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;padding:20px 0 8px}
.legend-item{display:flex;align-items:center;border:1px solid var(--line);border-radius:7px;background:#172129;padding:9px 10px;cursor:pointer;font-size:10px;color:var(--ink)}
.legend-item[aria-pressed=false]{opacity:.5;text-decoration:line-through}
.legend .v{font-size:9px;color:var(--muted);margin-left:10px}
.chart-note{font-size:10px;text-align:center;color:var(--muted);margin:10px 0 3px}
.chart-empty{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);max-width:440px;width:80%;padding:16px;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:10px;font-size:12px}
.chart-empty b{display:block;margin-bottom:5px}
.tip{position:absolute;pointer-events:none;background:#eaf0e7;color:#142012;border:1px solid #b2c1ae;font-size:11px;line-height:1.7;padding:10px 12px;border-radius:8px;white-space:nowrap;transform:translate(-50%,0);z-index:3}
.chart-data{margin-top:14px}
.chart-data summary{font-size:10px}
.chart-data .tablewrap{margin-top:12px}
.note{border-left:2px solid #405d34;background:#121d18;color:var(--muted);padding:13px 17px;font-size:11px;border-radius:0 7px 7px 0;margin-top:16px}
.note b{color:#c4d4bc}
.pick{border-top:1px solid var(--line);padding:18px 0}
.pick:first-child{border-top:0}
.pick .top{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.pick .tk{font-size:17px;font-weight:700}
.pick .lv{margin-left:auto;font-size:11px;color:var(--muted)}
.pick p{font-size:12px;line-height:1.8;color:var(--muted);margin:8px 0 0}
.pick small{font-size:10px;color:var(--muted)}
details>summary{font-size:12px;font-weight:500;color:var(--muted);cursor:pointer;margin-top:10px}
details>summary:hover{color:var(--accent)}
.bar{display:grid;grid-template-columns:180px 1fr 75px;gap:14px;align-items:center;font-size:11px;padding:10px 0;border-bottom:1px solid var(--line)}
.bar .track{position:relative;height:9px;background:var(--soft);border-radius:5px}
.bar .mid{position:absolute;left:50%;top:-3px;bottom:-3px;width:1px;background:var(--muted);opacity:.5}
.bar .band{position:absolute;top:2px;bottom:2px;border-radius:4px;opacity:.28;background:var(--c)}
.bar .fill{position:absolute;top:0;bottom:0;border-radius:5px;background:var(--c)}
.bar .val{text-align:right}
.faq details{background:var(--card);border:1px solid var(--line);padding:17px 21px;border-radius:8px;margin-top:9px}
.faq summary{color:var(--ink);margin:0;font-size:13px}
.faq p{color:var(--muted);font-size:12px;margin:12px 0 0}
.ideas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.ideas ul{padding-left:17px;font-size:12px;color:var(--muted);line-height:1.8}
.foot{max-width:1220px;margin:auto;padding:30px 36px 35px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:40px;color:var(--muted);font-size:11px}
.foot p{max-width:62ch;margin:0;font-size:10px}
.footer-brand{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.03em}
.footer-brand span{display:block;font-size:10px;font-weight:400;color:var(--muted);letter-spacing:0;margin-top:5px}
.empty{padding:30px;text-align:center;color:var(--muted)}

@media(min-width:1000px){#tonight .who{padding:15px}
#tonight .who h3{font-size:13px}
}

@media(max-width:1000px){.hero{gap:35px;grid-template-columns:1.25fr 1fr}
.cols5{grid-template-columns:repeat(3,minmax(0,1fr))}
.nav-links{gap:16px}
.brand-sub{display:none}
.podium{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.ideas{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(max-width:640px){main{padding:0 19px 45px}
.disclaimer{font-size:9px}
.nav{padding:19px 0;gap:12px;flex-wrap:wrap}
.brand{font-size:16px}
.nav-code{margin-left:auto}
.nav-links{order:3;justify-content:space-between;width:100%;padding-top:7px}
.nav-links a{font-size:11px}
.hero{grid-template-columns:1fr;gap:26px;padding:34px 0 25px}
h1{font-size:53px}
.hero .lead{font-size:14px}
.experiment-card{padding:23px}
.experiment-card h2{font-size:28px;margin-top:20px}
.experiment-card>p{margin-bottom:20px}
.steps{grid-template-columns:1fr;gap:17px;padding:0 0 25px}
.step p{font-size:12px}
.step h3{font-size:13px}
.cols5{grid-template-columns:1fr 1fr}
.who{padding:15px}
.who .tag{font-size:9px}
.who p{font-size:11px}
.who h3{font-size:14px}
section{margin-top:36px}
h2{font-size:23px}
.sub{font-size:12px}
.section-heading{align-items:flex-end}
.text-link{font-size:10px;white-space:nowrap;margin-bottom:12px}
.chartbox{padding:15px 8px}
.chartbox svg{min-height:180px}
.legend{gap:7px;padding-top:10px;justify-content:flex-start}
.legend-item{font-size:10px;padding:8px}
.legend .v{font-size:8px;margin-left:6px}
.chart-note{padding:0 9px}
.seg button{padding:7px 9px;font-size:10px}
.amt{margin-left:0;width:100%}
.podium{grid-template-columns:1fr}
.bar{grid-template-columns:1fr 75px}
.bar .track{grid-column:1/-1;order:3}
.ideas{grid-template-columns:1fr}
.foot{padding:25px 19px;flex-direction:column;gap:20px}
.pick .lv{margin-left:0;width:100%}
.chart-empty{font-size:10px;padding:10px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
}


/* Arena research transparency panels */
.health-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.health-card{display:flex;flex-direction:column;gap:6px;min-height:130px}
.health-card strong{font-size:22px;letter-spacing:-.025em}
.health-label{font-size:12px;font-weight:650;color:var(--muted)}
.health-card small,.health-details small{color:var(--muted);font-size:12px}
.health-ok{color:var(--up)}.health-warning{color:var(--warn)}
.health-details{margin-top:12px}.health-details p{margin:12px 0}
#research .cols3{grid-template-columns:repeat(3,minmax(0,1fr))}
#research .card{padding:21px}#research h3{margin:0 0 9px;font-size:15px}#research p{font-size:13px;line-height:1.7}
@media(max-width:760px){.health-grid,#research .cols3{grid-template-columns:1fr}}

/* Arena 2.0 fixed-capital and learning views */
.portfolio-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.portfolio-card{border-top:2px solid var(--c)}
.portfolio-title{display:flex;align-items:center;gap:2px}.portfolio-title h3{margin:0}.portfolio-title .rank{margin-left:auto;color:var(--muted);font-size:10px}
.portfolio-return{font-size:34px;line-height:1.15;font-weight:750;letter-spacing:-.045em;margin-top:18px;font-variant-numeric:tabular-nums}
.portfolio-card>small{display:block;color:var(--muted);font-size:10px;margin-top:4px}
.sample-warning{color:var(--warn);font-size:10px;line-height:1.5;margin:16px 0 0}
.learning-grid{display:grid;grid-template-columns:2fr 1fr;gap:14px}
.evaluation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.learning-kpis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px}
.learning-kpis span{display:block;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.05em}.learning-kpis b{display:block;font-size:13px;margin-top:4px;overflow-wrap:anywhere}
.reward-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:12px}.reward-row small{display:block;color:var(--muted);font-size:9px;margin-top:2px}
.trade-search{margin-left:auto;display:flex;align-items:center;gap:9px;color:var(--muted);font-size:10px}.trade-search input{min-width:235px;padding:8px 10px;border:1px solid var(--line);border-radius:7px;background:var(--card);color:var(--ink)}
@media(max-width:900px){.portfolio-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learning-grid{grid-template-columns:1fr}}
@media(max-width:640px){.portfolio-grid,.evaluation-grid{grid-template-columns:1fr}.learning-kpis{grid-template-columns:1fr 1fr}.trade-search{width:100%;margin-left:0;align-items:flex-start;flex-direction:column}.trade-search input{width:100%;min-width:0}}