:root{color-scheme:light;--ink:#171e28;--muted:#586575;--line:#dce2e9;--blue:#2456ce;--surface:#f3f6fa;--green:#17633d}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font:16px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer;border:1px solid transparent;border-radius:6px;padding:12px 20px;background:var(--blue);color:#fff;font-weight:650;min-height:46px}button:hover{filter:brightness(.94)}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #719cfa;outline-offset:4px}a{color:var(--blue)}header{padding:22px max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{font-size:30px;font-weight:800;letter-spacing:-1.5px;text-decoration:none;color:var(--ink)}.brand span{font-size:12px;font-weight:500;letter-spacing:0;display:block;color:var(--muted)}.header-right,.session{display:flex;gap:20px;align-items:center}.environment{font-size:13px;color:var(--muted)}.quiet{color:var(--ink);background:transparent;border-color:var(--line);font-size:13px;padding:9px 14px}.skip{position:absolute;top:-100px;left:20px;padding:10px;background:white;z-index:4}.skip:focus{top:10px}main{max-width:1240px;margin:auto;padding:0 24px}.intro{padding:58px 0 38px;max-width:800px}.eyebrow,.small-title{font-size:12px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}.eyebrow{margin:0 0 12px;color:var(--blue)}h1{font-size:clamp(32px,4.4vw,55px);line-height:1.12;letter-spacing:-.045em;font-weight:650;margin:0 0 22px}h1 span{color:var(--muted)}h2{font-size:28px;line-height:1.2;letter-spacing:-.025em;margin:0 0 12px}h3{font-size:21px;line-height:1.3;letter-spacing:-.02em;margin:0 0 12px}h4{font-size:14px;margin:0 0 12px}p{margin:0 0 12px}.lede{font-size:18px;max-width:650px;color:var(--muted)}.access{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding:32px;background:var(--surface);border:1px solid var(--line);margin-bottom:30px}.access p{color:var(--muted);max-width:470px}.access label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}.access input{width:100%;padding:13px;border:1px solid #a7b2c0;border-radius:4px;background:white;margin-bottom:12px}.access button{width:100%}.hint{font-size:12px;margin-top:10px}#message:empty{display:none}#message{padding:14px 18px;background:#fff5de;color:#694600;border:1px solid #ddc595;margin-bottom:24px}.workspace-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:8px 0 20px}.workspace-heading h2,.workspace-heading h3{margin:0}.session,#visitor{font-size:13px;color:var(--muted)}.lab{display:grid;grid-template-columns:285px minmax(0,1fr);border:1px solid var(--line);border-radius:8px;overflow:hidden}aside{background:var(--surface);padding:24px 16px;border-right:1px solid var(--line)}aside>.small-title{margin-left:12px}#scenarios{display:grid;gap:5px;margin-top:14px}.scenario{color:var(--ink);background:transparent;text-align:left;padding:12px;border:1px solid transparent;font-size:14px;font-weight:550;display:flex;gap:14px;align-items:center}.scenario span{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.scenario[aria-pressed=true]{background:white;border-color:#b9caed;color:var(--blue);box-shadow:0 2px 3px #203c6620}.experiment{padding:30px}.experiment-heading{display:flex;justify-content:space-between;align-items:start;gap:24px;border-bottom:1px solid var(--line);padding-bottom:24px}.experiment-heading p:last-child{font-size:14px;color:var(--muted);max-width:450px;margin-bottom:0}.experiment-heading button{white-space:nowrap}.empty{padding:44px 10px;color:var(--muted);max-width:460px}.empty h3{color:var(--ink);font-size:19px}.ledger-symbol{font-size:40px;color:var(--blue);margin-bottom:18px}.result-heading{display:flex;justify-content:space-between;align-items:center;margin:24px 0 6px;gap:12px}.result-heading h3{margin:0}.verified{font-size:12px;color:var(--green);font-weight:700;white-space:nowrap}.evidence-flow{list-style:none;margin:0;padding:0}.evidence-flow>li{display:flex;gap:20px;border-bottom:1px solid var(--line);padding:22px 0}.step{color:#8492a4;font-size:12px;padding-top:3px}.evidence-flow .small-title{display:block;margin-bottom:8px}.evidence-flow strong{display:block;font-size:20px;font-weight:600}.evidence-flow p{font-size:13px;color:var(--muted);margin:8px 0 0}.counts{display:flex;align-items:center;gap:30px;margin:12px 0}.counts div{display:flex;flex-direction:column}.counts span{font-size:12px;color:var(--muted)}.counts strong{font-size:40px;line-height:1.2;font-weight:500;font-variant-numeric:tabular-nums}.attempt{font-size:14px;display:flex;gap:16px;margin:7px 0}.attempt b{font-weight:600}.executed{color:var(--green)}.rejected{color:#8b4a13}.ledger{background:var(--surface);padding:18px;margin:22px 0}.record{display:flex;justify-content:space-between;gap:16px;font-size:13px}.record code{font-size:12px;overflow-wrap:anywhere}#records:empty::after{content:"No records created.";font-size:14px;color:var(--muted)}.evidence-footer{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:12px;color:var(--muted)}details{font-size:12px;color:var(--muted);margin-top:20px}summary{cursor:pointer;padding:10px 0}dl{margin:10px 0}dt{font-weight:600;margin-top:10px}dd{margin:3px 0;overflow-wrap:anywhere;font-family:ui-monospace,monospace}.history-section{margin:36px 0}.history-section .workspace-heading span{font-size:12px;color:var(--muted)}.history{border-top:1px solid var(--line)}.history button{display:flex;justify-content:space-between;gap:20px;align-items:center;width:100%;color:var(--ink);background:white;border:0;border-bottom:1px solid var(--line);border-radius:0;text-align:left;font-size:14px;padding:15px 4px}.history button span{font-size:12px;font-weight:400;color:var(--muted)}.history>p{padding:18px 0;color:var(--muted);font-size:14px}footer{border-top:1px solid var(--line);padding:26px 0 40px;font-size:12px;color:var(--muted);margin-top:40px;max-width:100%;line-height:1.7}footer a{display:block;margin-top:12px;text-decoration:none;font-weight:600}[hidden]{display:none!important}@media(max-width:900px){.lab{grid-template-columns:235px minmax(0,1fr)}.experiment{padding:22px}.experiment-heading{display:block}.experiment-heading button{margin-top:20px}.access{gap:30px}}@media(max-width:650px){header{padding:16px 20px}.brand{font-size:26px}.environment{max-width:110px;font-size:12px;text-align:right}.header-right{gap:10px}main{padding:0 20px}.intro{padding:36px 0 24px}.lede{font-size:16px}.access{grid-template-columns:1fr;padding:24px;gap:18px}.lab{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid var(--line);padding:16px}#scenarios{grid-template-columns:1fr 1fr;gap:4px}.scenario{font-size:12px;padding:10px;gap:7px;min-height:48px}.workspace-heading{align-items:start}.workspace-heading h2{font-size:24px}.session{flex-direction:column;gap:8px;align-items:end}.experiment{padding:20px}.result-heading h3{font-size:18px}.result-heading{align-items:start}.verified{font-size:12px}.evidence-flow>li{gap:12px}.record,.evidence-footer{flex-wrap:wrap}.history button{align-items:start}.history button span{max-width:105px;text-align:right}.history-section .workspace-heading{flex-direction:column;gap:4px}.counts strong{font-size:36px}}
/* Owner-supplied LEEU universal ecosystem standard, applied 2026-10-31. */
:root{color-scheme:dark;--ink:#FFFFFF;--muted:#AAB5C6;--line:#364251;--blue:#285DE0;--surface:#141A22;--green:#AFC8FF;--canvas:#0A0D12;--raised:#202833;--gold:#D7BB76}
body{background:var(--canvas);color:var(--ink);font-size:15px;scrollbar-color:var(--line) var(--canvas)}
::selection{background:#285DE0;color:white}input{caret-color:var(--gold)}
header{background:var(--canvas);padding-top:24px;padding-bottom:24px}
.brand{display:flex;align-items:center;gap:20px;letter-spacing:0;color:var(--gold)}
.brand img{width:80px;height:80px;object-fit:contain;flex-shrink:0}
.brand .brand-copy{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:14px}
.brand-copy strong{font-family:Georgia,'Times New Roman',serif;font-size:30px;font-weight:400;letter-spacing:3px;color:var(--gold)}
.brand-copy span{font-size:13px;color:var(--muted)}
.environment{background:#302916;color:var(--gold);border-radius:6px;padding:7px 10px;font-size:12px}
.intro{padding-top:40px;padding-bottom:32px;max-width:850px}
h1,h2,h3,h4{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:0}
h1{font-size:40px;line-height:1.2;margin-bottom:20px}h1 span{color:var(--gold)}h2{font-size:26px}h3{font-size:24px}h4{font-size:20px}
.lede{font-size:16px;line-height:1.65;color:var(--muted);max-width:680px}
button{border-radius:8px;background:var(--blue);min-height:44px;font-size:14px}
button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.quiet{background:transparent;color:var(--gold);border-color:var(--gold);border-radius:8px;font-size:13px}
.quiet:hover{background:#262316;filter:none}.quiet:disabled,button:disabled{background:var(--raised);border-color:var(--line);color:var(--muted);opacity:.7}
.access{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:32px;gap:56px}
.access h2{font-size:28px}.access input{background:var(--canvas);border:1px solid var(--line);border-radius:8px;color:white;min-height:48px}
.access input::placeholder{color:var(--muted)}.access p{font-size:14px}.access .hint{font-size:12px}.access label{font-size:13px;color:var(--muted)}
#message{background:#302916;color:#F3D991;border:1px solid #6b562a;border-radius:8px}
.lab{border-color:var(--line);border-radius:16px;background:var(--surface)}
aside{background:var(--canvas);border-color:var(--line)}
.small-title{color:var(--muted);font-size:12px;letter-spacing:.08em;font-weight:500}
.scenario{color:var(--muted);background:transparent;border-radius:8px;font-size:14px;line-height:1.4}
.scenario:hover{background:var(--raised);filter:none;color:white}
.scenario[aria-pressed=true]{background:#182A4C;border:1px solid #263D65;box-shadow:inset 2px 0 var(--gold);color:white}
.scenario span{color:#B9D0FF;font-size:12px}
.experiment{background:var(--surface)}.experiment-heading h3{font-size:26px}.experiment-heading p:last-child{font-size:14px}
.empty h3{font-size:24px}.empty p{font-size:14px}.ledger-symbol{color:var(--gold)}
.result-heading h3{font-size:24px}.verified{color:#B9D0FF;background:#1B2C49;border-radius:5px;padding:5px 8px;font-size:12px;font-weight:600}
.evidence-flow .step{color:var(--gold)}.evidence-flow p{font-size:14px}
.evidence-flow strong{font-size:20px}.executed{color:#B9D0FF}.rejected{color:var(--gold)}
.attempt{flex-wrap:wrap;column-gap:14px;row-gap:2px;font-size:14px}.attempt>span:last-child{color:var(--muted)}
.counts strong{font-family:Georgia,'Times New Roman',serif;font-size:40px;font-weight:400}.counts span{font-size:13px}
.ledger{background:var(--canvas);border:1px solid var(--line);border-radius:12px}.record{font-size:14px}.record code{font-size:12px}
details{font-size:13px}summary{color:var(--gold)}.evidence-footer{font-size:12px}
.history button{background:transparent;color:white;border-bottom-color:var(--line)}.history button:hover{background:var(--surface);filter:none}.history button span{color:var(--muted)}
footer{font-size:12px;color:var(--muted)}footer strong,footer a{color:var(--gold)}.skip{background:var(--raised);color:white}
@media(max-width:900px){.access{gap:32px}}
@media(max-width:650px){header{padding:16px 20px;align-items:flex-start}.brand{gap:12px}.brand img{width:56px;height:56px}.brand-copy strong{font-size:24px;letter-spacing:2px}.brand-copy span{font-size:12px;max-width:140px}.environment{max-width:106px;font-size:12px;padding:6px 8px}.header-right{flex-direction:column;align-items:flex-end;gap:8px}h1{font-size:32px;line-height:1.25}.intro{padding-top:28px}.access{padding:24px;gap:20px}.access h2{font-size:26px}.scenario{font-size:13px;min-height:54px}.workspace-heading h2{font-size:26px}.experiment-heading h3{font-size:24px}.result-heading{flex-wrap:wrap;gap:8px}.result-heading h3{font-size:24px}.verified{font-size:12px}.history-section .workspace-heading h3{font-size:24px}.evidence-flow strong{font-size:19px}.counts strong{font-size:36px}}