:root{
  --bg:#f7f6f2; --surface:#fff; --ink:#1b1d22; --muted:#5b6070; --line:#d9d7cf;
  --accent:#2c4bd8; --accent-ink:#fff; --ok:#1f7a4d; --warn:#9a5b00; --bad:#b3261e;
  --human:#1b1d22; --agent:#2c4bd8; --synth:#7a6f5a; --radius:10px; --focus:#ff9d00;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --bg:#12141a; --surface:#1b1e26; --ink:#eceef3; --muted:#a3a9b8; --line:#333846;
  --accent:#8ea2ff; --accent-ink:#10131c; --ok:#5fcf96; --warn:#f0b04a; --bad:#ff8a80;
  --human:#eceef3; --agent:#8ea2ff; --synth:#c2b79c;}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--surface);padding:8px;z-index:9}
.top{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-bottom:1px solid var(--line);background:var(--surface)}
.brand{font-weight:700;letter-spacing:.08em;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px}
.mark{width:18px;height:18px;border:2.5px solid var(--ink);border-radius:50%;position:relative}
.mark::after{content:"";position:absolute;inset:3px;background:var(--accent);border-radius:50%}
nav{display:flex;gap:18px;align-items:center}nav a{text-decoration:none;color:var(--ink)}
nav a[aria-current=page]{text-decoration:underline;text-underline-offset:4px}
main{max-width:1040px;margin:0 auto;padding:28px 20px 60px;outline:none}
.foot{max-width:1040px;margin:0 auto;padding:18px 20px 40px;color:var(--muted);font-size:13px}
h1{font-size:clamp(28px,5vw,42px);line-height:1.1;margin:0 0 12px}
h2{font-size:22px;margin:0 0 8px}
p.lead{font-size:18px;color:var(--muted);max-width:60ch;margin:0 0 20px}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);border:0;border-radius:var(--radius);padding:12px 20px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.btn.small{padding:7px 14px;font-size:14px}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.grid2{display:grid;grid-template-columns:2fr 1fr;gap:20px}@media(max-width:800px){.grid2{grid-template-columns:1fr}}
.badge{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--muted);background:var(--bg);white-space:nowrap}
.badge.ok{color:var(--ok);border-color:var(--ok)}.badge.warn{color:var(--warn);border-color:var(--warn)}
.counts{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}
.count{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:8px 12px}
.count b{font-size:20px}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:10px}
.legend span{display:flex;align-items:center;gap:6px}
svg.net{width:100%;height:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
svg .human{fill:var(--human);stroke:var(--human)}svg .agent{fill:none;stroke:var(--agent);stroke-width:2.5}
svg .synth{fill:none;stroke:var(--synth);stroke-width:2;opacity:.75}
svg .ring{fill:none;stroke:var(--muted);stroke-dasharray:3 3}
svg text{fill:var(--muted);font-size:11px}
/* wizard */
.steps{display:flex;gap:6px;list-style:none;padding:0;margin:0 0 22px;flex-wrap:wrap}
.steps li{font-size:13px;padding:5px 11px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--surface)}
.steps li[aria-current=step]{color:var(--accent-ink);background:var(--accent);border-color:var(--accent)}
.steps li.done::before{content:"✓ "}
label{display:block;font-weight:600;margin:14px 0 4px}
input[type=text],textarea,select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit}
textarea{min-height:130px;resize:vertical}
.hint{color:var(--muted);font-size:14px;margin:4px 0 0}
.claim{display:flex;gap:10px;align-items:center;margin-top:6px}.claim input{flex:1}
.draft{border-left:4px solid var(--warn);padding-left:12px}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.tag{border:1px solid var(--line);border-radius:6px;padding:3px 8px;font-size:14px;background:var(--bg)}
.tag button{border:0;background:none;color:var(--muted);cursor:pointer;font-size:16px}
.opt{display:flex;gap:12px;padding:12px;border:1px solid var(--line);border-radius:8px;margin-top:8px;cursor:pointer;align-items:flex-start}
.opt input{margin-top:5px}.opt.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--surface))}
.opt small{display:block;color:var(--muted)}
.err{color:var(--bad);margin-top:10px;font-weight:600}
.scen{margin-top:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.scen output{font-variant-numeric:tabular-nums;font-weight:700;margin-left:8px}
input[type=range]{width:100%}
.gate{display:flex;gap:10px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}
.gate .s{font-weight:700;width:96px;flex:none;white-space:nowrap}.gate .s.p{color:var(--ok)}.gate .s.f{color:var(--warn)}
.actions{display:flex;justify-content:space-between;margin-top:24px;gap:12px}
.mono{font-family:ui-monospace,Menlo,monospace;font-size:12px;word-break:break-all;color:var(--muted)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:14px 0 20px}
.tabs a{padding:8px 14px;text-decoration:none;color:var(--muted);border-bottom:3px solid transparent;margin-bottom:-1px}
.tabs a[aria-current=page]{color:var(--ink);border-bottom-color:var(--accent);font-weight:600}
nav a[aria-current=page].btn{outline:2px solid var(--ink);outline-offset:2px}
.linklike{background:none;border:0;padding:0;font:inherit;color:var(--ink);cursor:pointer;text-decoration:underline;text-underline-offset:4px}

.banner{border:2px dashed var(--line);padding:10px 14px;border-radius:8px;margin:0 0 16px}
.cmp{width:100%;border-collapse:collapse;font-size:14px}.cmp th,.cmp td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}
.exp-claim{margin-top:12px}.story{margin:8px 0}.story dt{font-weight:600;font-size:13px;color:var(--muted)}.story dd{margin:0 0 6px}.ev{gap:6px;margin-bottom:6px}.ev select,.ev input{min-width:0}.wrap{flex-wrap:wrap;gap:6px}
.btn.danger{background:var(--bad);border-color:var(--bad);color:var(--accent-ink)}details summary{cursor:pointer}
.legal{max-height:340px;overflow:auto;padding:12px 16px;border:1px solid var(--line);border-radius:8px;margin-top:8px}.legal h1{font-size:20px}.legal h2{font-size:16px;margin-top:18px}.legal-page{max-width:46rem}.legal-page h2{font-size:18px;margin-top:22px}blockquote{margin:12px 0;padding:8px 14px;border-left:3px solid var(--line);color:var(--muted)}.banner{border:2px dashed var(--line);padding:10px 14px;border-radius:8px}ul.plain{padding-left:20px}.help{white-space:nowrap}
.bubbles{width:100%;height:auto;margin:8px 0}.bubble{cursor:pointer}.bubble circle{fill:none;stroke:currentColor;stroke-width:1.5;stroke-dasharray:4 3}.bubble circle.on{stroke-width:3.5;stroke-dasharray:none}.bubble:hover circle,.bubble:focus circle{stroke-width:3;outline:none}.bubble:focus-visible circle{stroke:var(--accent,currentColor);stroke-width:4}.bubble .bn{font-weight:700;font-size:16px;fill:currentColor}.bubble .bl{font-size:10px;fill:currentColor}
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:end;margin:12px 0}.filters label{display:flex;flex-direction:column;font-size:13px;gap:3px}
.node-row{display:grid;grid-template-columns:90px 1fr auto;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);align-items:start}.node-row .k{display:flex;flex-direction:column;align-items:center;font-size:12px}.glyph{color:currentColor;vertical-align:middle}.chips{margin-top:4px}.attr{white-space:pre-wrap;font-size:12px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:700px){.node-row{grid-template-columns:70px 1fr}.node-row .st{grid-column:2}.grid2{grid-template-columns:1fr}}