:root{
  --bg:#F4F6F9; --surface:#FFFFFF; --ink:#10151D; --muted:#5A6475; --line:#DCE1E9; --soft:#EBEFF5;
  --lane-a:#2A57DD; --lane-b:#BF7309; --race:#C9362F; --good:#1E8A57;
  --display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:"Instrument Sans", "Segoe UI", system-ui, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0C1016; --surface:#131923; --ink:#E6EAF2; --muted:#98A2B4; --line:#252E3D; --soft:#1A2230;
    --lane-a:#7593FF; --lane-b:#EBA640; --race:#F2645B; --good:#4CC38A; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0C1016; --surface:#131923; --ink:#E6EAF2; --muted:#98A2B4; --line:#252E3D; --soft:#1A2230;
  --lane-a:#7593FF; --lane-b:#EBA640; --race:#F2645B; --good:#4CC38A; color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;padding-inline:20px;padding-block:0 48px}
.wrap{max-width:1080px;margin:0 auto}
a{color:inherit}
:focus-visible{outline:2px solid var(--lane-a);outline-offset:2px;border-radius:4px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;line-height:1.1}
h2{font-size:clamp(24px,3.2vw,32px);font-weight:700}
h3{font-size:18px;font-weight:700}
p{margin:0}

/* prototype banner + nav */
.proto{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;justify-content:center;background:var(--soft);border-bottom:1px solid var(--line);margin-inline:-20px;padding:8px 20px;font-size:13px;color:var(--muted);text-align:center}
.proto b{color:var(--ink);font-weight:600}
nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding-block:18px}
.brand{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.brand strong{font-family:var(--display);font-size:20px;font-weight:700}
.brand span{font-size:13px;color:var(--muted)}
.links{display:flex;flex-wrap:wrap;gap:4px 18px;font-size:14px}
.links a{text-decoration:none;color:var(--muted)}
.links a:hover{color:var(--ink)}

/* hero */
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding-block:28px 40px;border-bottom:1px solid var(--line)}
.hero h1{font-size:clamp(34px,5.4vw,58px);font-weight:700;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--race)}
.lede{margin-top:18px;font-size:18px;color:var(--muted);max-width:52ch}
.facts{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:24px}
.fact{display:flex;flex-direction:column}
.fact .num{font-size:22px;font-weight:500}
.fact span:last-child{font-size:13px;color:var(--muted)}
.race-fig{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px 18px 12px}
.race-fig svg{width:100%;height:auto;display:block}
.race-fig figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.lane-a{fill:var(--lane-a)} .lane-b{fill:var(--lane-b)}
.stroke-a{stroke:var(--lane-a)} .stroke-b{stroke:var(--lane-b)}
.svg-ink{fill:var(--ink)} .svg-muted{fill:var(--muted)} .svg-line{stroke:var(--line)} .svg-race{fill:var(--race)} .stroke-race{stroke:var(--race)}
.svg-surface{fill:var(--surface)}

/* leaderboard */
section{padding-block:44px 8px}
.head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px 24px;margin-bottom:18px}
.head p{color:var(--muted);max-width:60ch;margin-top:8px}
.tabs{display:flex;flex-wrap:wrap;gap:6px}
.tab{font:500 14px var(--body);color:var(--muted);background:transparent;border:1px solid var(--line);border-radius:999px;padding:6px 14px;cursor:pointer}
.tab[aria-selected="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.board{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 18px 14px}
.row{display:grid;grid-template-columns:28px minmax(150px,210px) 1fr 132px;gap:14px;align-items:center;padding-block:12px;border-bottom:1px solid var(--line)}
.row:last-of-type{border-bottom:0}
.rank{font-family:var(--mono);color:var(--muted);font-size:14px}
.model b{display:block;font-weight:600}
.model small{color:var(--muted);font-size:12.5px}
.track{position:relative;height:22px;border-radius:3px;background:repeating-linear-gradient(90deg,transparent 0 calc(25% - 1px),var(--line) calc(25% - 1px) 25%)}
.bar{position:absolute;left:0;top:5px;height:12px;border-radius:2px;background:var(--lane-a)}
.bar.b{background:var(--lane-b);top:11px;height:8px}
.bar.a2{top:3px;height:8px}
.ci{position:absolute;top:10px;height:2px;background:var(--ink);opacity:.55}
.ci::before,.ci::after{content:"";position:absolute;top:-4px;width:2px;height:10px;background:var(--ink)}
.ci::before{left:0}.ci::after{right:0}
.score{text-align:right}
.score .num{font-size:18px;font-weight:500}
.score small{display:block;color:var(--muted);font-size:12px}
.pending .track{background:repeating-linear-gradient(135deg,var(--soft) 0 6px,transparent 6px 12px)}
.pending .score .num{font-size:14px;color:var(--muted)}
.axis{display:grid;grid-template-columns:28px minmax(150px,210px) 1fr 132px;gap:14px;padding-top:6px}
.axis .ticks{position:relative;height:16px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.axis .ticks span{position:absolute;transform:translateX(-50%)}
.axis .ticks span:first-child{transform:none}
.axis .ticks span:last-child{transform:translateX(-100%)}
.legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--muted);margin-top:12px}
.sw{display:inline-block;width:12px;height:8px;border-radius:2px;margin-right:6px;vertical-align:middle}
.note{font-size:13px;color:var(--muted);margin-top:12px;max-width:80ch}

/* two-column blocks */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:22px}
.task-meta{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 14px}
.chip{font-family:var(--mono);font-size:12px;border:1px solid var(--line);border-radius:4px;padding:2px 8px;color:var(--muted)}
.chip.hard{color:var(--race);border-color:currentColor}
.prompt{font-size:15px;background:var(--soft);border-radius:6px;padding:14px 16px;display:grid;gap:10px}
.gets{display:grid;gap:8px;margin-top:14px;font-size:14px}
.gets div{display:flex;gap:10px}
.gets .k{font-family:var(--mono);font-size:12px;color:var(--muted);min-width:78px;padding-top:2px}

/* pipeline */
ol.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
ol.steps li{background:var(--surface);padding:18px 18px 20px;display:grid;gap:6px;align-content:start}
ol.steps .n{font-family:var(--mono);font-size:12px;color:var(--lane-a)}
ol.steps p{font-size:14.5px;color:var(--muted)}

/* contamination chart */
.cchart{display:grid;gap:12px;margin-top:16px}
.crow{display:grid;grid-template-columns:86px 1fr;gap:12px;align-items:center}
.crow .lab{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.pair{display:grid;gap:4px}
.pbar{position:relative;height:16px;background:var(--soft);border-radius:2px}
.pbar i{position:absolute;inset:0 auto 0 0;border-radius:2px}
.pbar em{position:absolute;right:6px;top:0;font:500 12px/16px var(--mono);font-style:normal;color:var(--muted)}
.result{margin-top:16px;font-size:14.5px;border-top:1px solid var(--line);padding-top:12px}

/* get it */
.get{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:start}
pre{margin:0;font-family:var(--mono);font-size:13.5px;line-height:1.7;background:var(--ink);color:var(--bg);border-radius:8px;padding:16px 18px;overflow-x:auto}
.copy{margin-top:10px;font:500 13px var(--body);background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:6px 12px;cursor:pointer}
.resources{display:grid;gap:10px}
.res{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:10px;font-size:15px}
.res span:last-child{font-family:var(--mono);font-size:12px;color:var(--muted);align-self:center}
footer{margin-top:56px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px}

@media (max-width:820px){
  .hero,.cols,.get{grid-template-columns:1fr}
  ol.steps{grid-template-columns:1fr}
  .row,.axis{grid-template-columns:22px 1fr 88px;gap:8px 10px}
  .row .track,.axis .ticks{grid-column:2 / 4;grid-row:2}
  .axis .spacer{display:none}
  .score .num{font-size:16px}
}
@media (prefers-reduced-motion:no-preference){ .bar{transition:width .45s ease} }

/* --- site pages beyond the prototype --- */
.brand a{color:var(--ink)}
.res a{text-decoration:none}
.res a:hover{text-decoration:underline}
.tablewrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:10px}
table.tasks{width:100%;border-collapse:collapse;font-size:14px}
table.tasks th{text-align:left;font:500 12px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
table.tasks td{padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.tasks tr:last-child td{border-bottom:0}
table.tasks td.num{font-size:13px;white-space:nowrap}
table.tasks a{color:var(--lane-a);text-decoration:none}
a.card.bench{color:var(--ink);transition:border-color .15s}
a.card.bench:hover{border-color:var(--lane-a)}
@media (prefers-reduced-motion:reduce){a.card.bench{transition:none}}

/* --- navigation: benchmarks menu + per-benchmark section bar --- */
details.menu{position:relative}
details.menu summary{list-style:none;cursor:pointer;color:var(--muted)}
details.menu summary::-webkit-details-marker{display:none}
details.menu summary::after{content:" \25BE"}
details.menu[open] summary,details.menu summary:hover{color:var(--ink)}
.menu-list{position:absolute;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:6px;min-width:250px;z-index:10;box-shadow:0 8px 24px rgba(16,21,29,.10)}
.menu-list a{display:flex;flex-direction:column;gap:2px;padding:8px 10px;border-radius:6px;color:var(--ink);text-decoration:none}
.menu-list a:hover,.menu-list a:focus-visible{background:var(--soft)}
.menu-list small{color:var(--muted);font-size:12px}
.subnav{display:flex;flex-wrap:wrap;gap:6px 20px;align-items:center;border-block:1px solid var(--line);padding-block:10px;font-size:14px}
.subnav strong{font-family:var(--display);font-size:16px;margin-right:4px}
.subnav a{text-decoration:none;color:var(--muted)}
.subnav a:hover{color:var(--ink)}
.subnav a[aria-current="page"]{color:var(--ink);font-weight:600;text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:2px;text-decoration-color:var(--lane-a)}

/* --- about page --- */
.areas{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.areas .card p{color:var(--muted);margin-top:8px;font-size:15px}
.principles{display:grid;gap:14px;margin-top:8px}
.principles div{display:grid;grid-template-columns:200px 1fr;gap:16px;border-top:1px solid var(--line);padding-top:14px}
.principles b{font-weight:600}
.principles span{color:var(--muted)}
.cta{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:22px}
.cta a.btn{background:var(--ink);color:var(--bg);text-decoration:none;border-radius:6px;padding:10px 16px;font-weight:500}
@media (max-width:820px){.areas{grid-template-columns:1fr}.principles div{grid-template-columns:1fr;gap:4px}}
/* On narrow screens the nav links wrap to the left edge, so the menu opens rightwards. */
@media (max-width:820px){.menu-list{left:0;right:auto;min-width:min(250px,calc(100vw - 32px))}}

/* --- leaderboard-first layout --- */
.lbhead{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:18px 32px;padding-block:28px 10px;border-bottom:1px solid var(--line)}
.lbhead h1{font-size:clamp(34px,5vw,52px);letter-spacing:-.02em}
.lbhead .lede{margin-top:12px;font-size:17px;max-width:62ch}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:14px;font-size:13px;color:var(--muted)}
.meta a{color:var(--lane-a)}
.actions{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-block;padding:10px 16px;border-radius:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);text-decoration:none;font-weight:500;font-size:14px}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn:hover{border-color:var(--lane-a)}
table.lb{width:100%;border-collapse:collapse;font-size:14px;min-width:860px}
table.lb th{text-align:left;font:500 12px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding:12px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
table.lb td{padding:12px;border-bottom:1px solid var(--line);vertical-align:middle}
table.lb tr:last-child td{border-bottom:0}
table.lb td small{display:block;color:var(--muted);font-size:12px;font-weight:400}
table.lb td.num{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
table.lb td.rank{font-size:16px}
table.lb td.bar{min-width:220px}
table.lb .track{position:relative;display:block;height:14px;border-radius:3px;background:repeating-linear-gradient(90deg,transparent 0 calc(25% - 1px),var(--line) calc(25% - 1px) 25%)}
table.lb .fill{position:absolute;left:0;top:3px;height:8px;border-radius:2px;background:var(--lane-a)}
table.lb .ci{position:absolute;top:6px;height:2px;background:var(--ink);opacity:.6}
table.lb .ci::before,table.lb .ci::after{content:"";position:absolute;top:-4px;width:2px;height:10px;background:var(--ink)}
table.lb .ci::before{left:0}table.lb .ci::after{right:0}

/* tasks page */
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px}
.filters input[type=search],.filters select{font:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink)}
.filters input[type=search]{flex:1;min-width:220px}
table.tasks{table-layout:auto}
table.sortable th[data-sort]{cursor:pointer;user-select:none}
table.sortable th[aria-sort="ascending"]::after{content:" \25B4"}
table.sortable th[aria-sort="descending"]::after{content:" \25BE"}
.chip.ok{color:var(--good);border-color:currentColor}
.chip.miss{color:var(--race);border-color:currentColor}

/* task page: trajectories */
details.traj{border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:0 16px;margin-bottom:10px}
details.traj>summary{cursor:pointer;padding:14px 0;font-size:15px;list-style:none}
details.traj>summary::-webkit-details-marker{display:none}
details.traj>summary::before{content:"\25B8  ";color:var(--muted)}
details.traj[open]>summary::before{content:"\25BE  "}
.step{border-top:1px solid var(--line);padding:12px 0}
.step .sh{display:flex;gap:12px;align-items:baseline;flex-wrap:wrap}
.step .sh .num{font-size:12px;color:var(--muted)}
.step .thought{font-size:14px;color:var(--muted);margin:0}
pre.cmd,pre.out{font-size:12.5px;line-height:1.55;margin:8px 0 0;padding:10px 12px;border-radius:6px;overflow-x:auto;white-space:pre-wrap;word-break:break-word}
pre.cmd{background:var(--ink);color:var(--bg)}
pre.out{background:var(--soft);color:var(--ink);max-height:360px;overflow:auto}
.step details summary{font-size:12.5px;color:var(--muted);cursor:pointer;margin-top:6px}

/* signup, changelog, footer, exclusions */
.card.signup{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 24px}
#signup-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
#signup-form input{font:inherit;font-size:14px;padding:10px 12px;border:1px solid var(--line);border-radius:6px;min-width:240px;background:var(--surface);color:var(--ink)}
#signup-form button{font:inherit;cursor:pointer}
#signup-msg{font-size:13px;color:var(--muted);flex-basis:100%}
#signup-msg.err{color:var(--race)}
.sr{position:absolute;left:-9999px}
.changelog{display:grid;gap:14px}
.clrow{display:grid;grid-template-columns:110px 60px 1fr;gap:14px;align-items:start;border-top:1px solid var(--line);padding-top:14px;font-size:15px}
.clrow .num{font-size:13px;color:var(--muted)}
ul.excl{color:var(--muted);font-size:14.5px;margin:8px 0 0;padding-left:18px}
ul.excl li{margin-bottom:6px}
footer{flex-direction:column;align-items:flex-start;gap:10px}
.footlinks{display:flex;flex-wrap:wrap;gap:4px 18px}
.footlinks a{color:var(--muted);text-decoration:none}
.footlinks a:hover{color:var(--ink)}
.cchart .pbar em{right:auto;left:calc(100% + 6px);white-space:nowrap}
.cchart .pbar{margin-right:110px}
@media (max-width:820px){.clrow{grid-template-columns:1fr}.cchart .pbar{margin-right:90px}.cchart .pbar em{font-size:12px}}


/* ===================== v3: numbers first, words folded ===================== */
body{font-variant-numeric:tabular-nums}
main{display:block}
section{padding-block:36px 0}
section.docs{padding-top:24px}
.lbhead{padding-block:24px 18px;border-bottom:0}
.lbhead .lede{margin-top:10px;font-size:16px}
.lbhead h1{font-size:clamp(32px,4.6vw,46px)}

/* metric cards */
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:6px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 16px;display:grid;gap:4px;min-width:0}
.kpi .lab{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.kpi .val{font-family:var(--display);font-size:26px;font-weight:700;line-height:1.1;letter-spacing:-.01em}
.kpi .val .num{font-family:var(--display)}
.kpi .sub{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* leaderboard bar: title left, tabs right, never wraps on desktop; description on its own line */
.lbsec{padding-top:28px}
.lbbar{display:flex;align-items:center;justify-content:space-between;gap:12px 24px;flex-wrap:nowrap}
.lbbar h2{white-space:nowrap}
.tabs{flex:0 0 auto;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;max-width:100%;padding:2px}
.tabs::-webkit-scrollbar{display:none}
.tab{white-space:nowrap}
.viewdesc{margin:8px 0 12px;min-height:1.5em;font-size:14px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.lbcard{padding:0;overflow:hidden}
.panetabs{display:flex;gap:2px;padding:10px 12px 0;border-bottom:1px solid var(--line)}
.ptab{font:500 13px var(--body);color:var(--muted);background:transparent;border:0;border-bottom:2px solid transparent;padding:8px 10px 10px;cursor:pointer;margin-bottom:-1px}
.ptab[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--lane-a)}
.tablewrap.flat{border:0;border-radius:0;background:transparent}
.chartbox{position:relative;height:240px;padding:12px 12px 0}
#pane-chart{padding:0 16px 14px}
.cardfoot{display:flex;flex-wrap:wrap;gap:4px 18px;padding:10px 16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.cardfoot a{color:var(--lane-a)}
.mobile-only{display:none}

/* the table: 6 columns, fixed row height, details on demand */
table.lb{min-width:0;font-size:14px}
table.lb th{font-size:12px;padding:10px 12px}
table.lb tr.main td{height:62px;padding:8px 12px}
table.lb tr.main{cursor:pointer}
table.lb tr.main:hover td{background:var(--soft)}
table.lb tr.main.open td{border-bottom-color:transparent}
table.lb td.rank{width:48px}
table.lb td.model a{font-weight:600;color:var(--ink);text-decoration:none}
table.lb td.model a:hover{text-decoration:underline;text-decoration-color:var(--lane-a)}
table.lb td.score{width:34%;min-width:170px}
table.lb td.score b{display:block;font-size:17px;font-weight:500}
table.lb td.score .track{margin-top:4px;height:10px;background:var(--soft)}
table.lb td.score .fill{top:2px;height:6px}
table.lb td.score .ci{top:4px}
table.lb td.score .ci::before,table.lb td.score .ci::after{top:-3px;height:8px}
table.lb td.score small{display:inline;margin-left:0;font-size:12px}
table.lb td.c-cps,table.lb td.c-hard{font-size:15px}
table.lb td.c-more{width:40px;text-align:right}
button.more{font:400 14px var(--mono);color:var(--muted);background:transparent;border:1px solid var(--line);border-radius:6px;width:28px;height:28px;cursor:pointer}
table.lb tr.detail td{padding:0 12px 14px;background:var(--surface)}
.defs{display:grid;gap:10px 24px;margin:0}
.defs>div{display:grid;grid-template-columns:140px 1fr;gap:10px;align-items:baseline;border-top:1px solid var(--line);padding-top:8px}
.defs dt{font-family:var(--mono);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.defs dd{margin:0;font-size:14px}
.defs dd small{color:var(--muted);font-size:12px}
.defs.cols3{grid-template-columns:repeat(3,minmax(0,1fr))}
.defs.cols3>div{grid-template-columns:1fr;gap:2px;border-top:0;padding-top:10px}
.defs.cols3 dd{font-family:var(--mono);font-size:15px}

/* folds */
details.fold{border-top:1px solid var(--line);margin-top:14px}
details.fold>summary{list-style:none;cursor:pointer;display:flex;align-items:baseline;gap:12px;padding:14px 36px 14px 0;font-family:var(--display);font-size:17px;font-weight:700;position:relative}
details.fold>summary::-webkit-details-marker{display:none}
details.fold>summary::after{content:"";position:absolute;right:10px;top:50%;width:8px;height:8px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:transform .15s}
details.fold[open]>summary::after{transform:translateY(-30%) rotate(-135deg)}
details.fold>summary:hover::after{border-color:var(--ink)}
@media (prefers-reduced-motion:reduce){details.fold>summary::after{transition:none}}
details.fold>summary small{font-family:var(--body);font-weight:400;font-size:13px;color:var(--muted)}
details.fold>summary:hover span{text-decoration:underline;text-decoration-color:var(--lane-a);text-underline-offset:4px}
.foldbody{padding:0 0 18px 0}
.codebox{position:relative;min-width:0;max-width:100%}
.codebox pre{padding-right:40px;overflow-x:auto}
.copyico{position:absolute;top:8px;right:8px;width:28px;height:28px;display:grid;place-items:center;background:transparent;border:0;border-radius:6px;color:var(--bg);opacity:.65;cursor:pointer}
.copyico:hover,.copyico:focus-visible{opacity:1;background:rgba(255,255,255,.12)}
.copyico.done{opacity:1;color:#7CE0A6}
.foldbody>p,.foldbody li{font-size:15px;color:var(--ink)}
.foldbody p+p{margin-top:10px}
ul.plain{margin:0;padding-left:18px;display:grid;gap:6px}
ol.numbered{margin:8px 0 0;padding-left:20px;display:grid;gap:8px;font-size:15px}
.dochead{display:flex;align-items:end;justify-content:space-between;gap:12px 24px;margin-bottom:14px;flex-wrap:wrap}
.linkbtn{font:500 13px var(--body);color:var(--lane-a);background:transparent;border:0;padding:4px 0;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.linkbtn:hover{color:var(--ink)}

/* three-card strip */
.strip3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding-top:28px}
.strip3 .card{padding:16px 18px;display:grid;gap:8px;align-content:start;text-decoration:none;color:var(--ink);min-width:0}
.strip3 .card p{font-size:14px;color:var(--muted)}
.strip3 .card .more{font-size:13px;color:var(--lane-a)}
.strip3 a.card:hover{border-color:var(--lane-a)}
.strip3 pre{font-size:12.5px;padding:10px 12px;line-height:1.6}
.rowline{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.strip3 .copy{margin-top:0}

/* signup, compact */
.signupsec{padding-top:20px}
form.signup{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;padding:14px 18px}
form.signup input{flex:1 1 220px}
form.signup .hint{font-size:13px;color:var(--muted)}
#signup-msg{flex-basis:100%;margin:0}
#signup-msg:empty{display:none}

/* chips with meaning, identical on every page */
.chip.clean{color:var(--good);border-color:currentColor}
.chip.split{color:var(--lane-b);border-color:currentColor}
.chip.hard{color:var(--race);border-color:currentColor}
.chip.composite{color:var(--lane-a);border-color:currentColor}
.chip.single{color:var(--muted)}
.chip.mono{font-size:12px}
a.chip{text-decoration:none}
a.chip:hover{color:var(--ink)}

/* mini result bars */
.mini{display:inline-block;width:56px;height:6px;border-radius:3px;background:var(--soft);vertical-align:middle;margin-right:8px;overflow:hidden}
.mini i{display:block;height:100%;background:var(--good);border-radius:3px}
table.tasks th.hl,table.tasks td.hl{background:var(--soft)}
table.tasks td.atts{white-space:nowrap}
table.tasks td.atts a{font-family:var(--mono);font-size:12px;margin-right:8px}
table#tasks th:first-child,table#tasks td:first-child{position:sticky;left:0;background:var(--surface);z-index:1;box-shadow:1px 0 0 var(--line)}
table#tasks th.hl:first-child,table#tasks td.hl:first-child{background:var(--soft)}

/* subnav: two things to do, one place to read */
.subnav details.menu summary{color:var(--muted);font-size:14px}
.subnav details.menu summary.cur{color:var(--ink);font-weight:600;text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:2px;text-decoration-color:var(--lane-a)}
.subnav .menu-list{left:auto;right:auto;min-width:200px}
.subnav .menu-list a[aria-current="page"]{font-weight:600;text-decoration:none;color:var(--lane-a)}
.crumbs{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.crumbs .pn{margin-left:auto;display:flex;gap:14px}
.crumbs .pn a{color:var(--lane-a)}
.taskpage h1{font-size:clamp(22px,3vw,30px);margin-top:8px;word-break:break-word}
table.results td.num{font-size:14px}
.changelog .clrow{grid-template-columns:110px 1fr}

/* task page: clamped prompt, diff first */
.prompt{margin-top:10px}
.prompt.clamp{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;max-height:4.9em}
.prompt.clamp p+p{margin-top:0}
.prompt p+p{margin-top:10px}
details.diff{margin-top:8px}
details.diff>summary,details.rest>summary{font-size:13px;color:var(--lane-a);cursor:pointer}
details.traj>summary{font-size:14px}
.areas.three{grid-template-columns:repeat(3,minmax(0,1fr))}
table.cmp tr.us td{font-weight:600}
.cta{margin-top:24px}

/* dark mode checks for the new pieces */
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .mini{background:#1F2937}}

/* mobile */
@media (max-width:820px){
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kpi .val{font-size:22px}
  .strip3,.areas.three,.defs.cols3{grid-template-columns:1fr}
  .defs.cols3{gap:0}
  .defs.cols3>div{border-top:1px solid var(--line);padding-top:8px;grid-template-columns:120px 1fr}
}
@media (max-width:720px){
  .lbbar{flex-wrap:wrap}
  .lbbar .tabs{flex-basis:100%;flex-wrap:wrap;overflow:visible}
  table.lb th.c-att,table.lb td.c-att,table.lb th.c-more,table.lb td.c-more,table.lb th.c-cps,table.lb td.c-cps{display:none}
  .mobile-only{display:inline}
  table.lb th,table.lb tr.main td{padding-inline:8px}
  table.lb td.score{min-width:120px;width:auto}
  table.lb td.score b{font-size:15px}
  table.lb td.c-cps,table.lb td.c-hard{font-size:13px}
  table.lb td.rank{width:36px}
  table.lb td.model a{font-size:13px}
  table.lb td.model small{font-size:12px}
  .lbhead .actions{width:100%}
  .lbhead .actions .btn{flex:1;text-align:center}
  details.fold>summary{flex-wrap:wrap;gap:4px 12px}
  details.fold>summary small{flex-basis:100%}
  .crumbs .pn{margin-left:0;flex-basis:100%}
  form.signup .btn{flex:1 1 100%;text-align:center}
}
@media (max-width:460px){
  .kpis{grid-template-columns:1fr 1fr;gap:8px}
  .kpi{padding:12px}
  .kpi .val{font-size:20px}
  .kpi .sub{white-space:normal}
}

/* contact form */
.areas .card.go{text-decoration:none;color:var(--ink)}
.areas .card.go:hover{border-color:var(--lane-a)}
form.cform{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px;padding:20px 22px;position:relative}
form.cform label{display:grid;gap:6px;font-size:13px;color:var(--muted);font-weight:500}
form.cform label small{font-weight:400}
form.cform .wide{grid-column:1 / -1}
form.cform input,form.cform select,form.cform textarea{font:inherit;font-size:15px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:9px 11px;width:100%;min-width:0}
form.cform textarea{resize:vertical}
form.cform input:focus,form.cform select:focus,form.cform textarea:focus{outline:2px solid var(--lane-a);outline-offset:1px;border-color:var(--lane-a)}
form.cform .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
form.cform .hint{font-size:13px;color:var(--muted)}
#contact-msg:empty{display:none}
#contact-msg{font-size:14px}
#contact-msg.err{color:var(--race)}
#contact-msg.ok{color:var(--good)}
@media (max-width:720px){form.cform{grid-template-columns:1fr;padding:16px}}