:root{color-scheme:dark;--bg:#0b1922;--panel:#12252f;--panel2:#18303a;--ink:#edf0e9;--muted:#acbec3;--gold:#d5ad70;--line:#30464e;--good:#89d5ae;--bad:#ffaba0;font-family:Arial,Helvetica,sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,input,select,textarea{font:inherit}button,select,input,textarea{border:1px solid var(--line);border-radius:5px;color:var(--ink);background:var(--panel)}button{padding:.7rem 1rem;cursor:pointer;min-height:44px}button:hover{border-color:var(--gold);background:var(--panel2)}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--gold);border-color:var(--gold);color:#17232b;font-weight:700}button.primary:hover{background:#e7c695}button[aria-pressed=true],button.selected{border-color:var(--gold);box-shadow:inset 0 0 0 1px var(--gold)}:focus-visible{outline:3px solid #f2c57c;outline-offset:3px}a{color:var(--gold)}header{height:94px;padding:1.25rem 4vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:1rem}.brand{display:flex;gap:1rem;color:var(--ink);text-decoration:none;font-size:.85rem;letter-spacing:.15em}.brand small{display:block;font-family:Georgia,serif;letter-spacing:.02em;color:var(--muted);font-size:.85rem;margin-top:.5rem}.rail-mark{border:1px solid var(--gold);padding:.35rem .6rem;color:var(--gold);font-size:1.6rem}nav{display:flex;gap:.5rem}nav button{border-color:transparent;background:transparent;color:var(--muted)}h1,h2,h3{font-family:Georgia,'Times New Roman',serif;font-weight:400}h1{font-size:clamp(2.5rem,5.5vw,5rem);line-height:1.07;margin:1rem 0}h2{font-size:2rem;margin:.6rem 0 1rem}h3{font-size:1.45rem}p{line-height:1.65}.eyebrow{text-transform:uppercase;letter-spacing:.17em;font-size:.8rem;color:var(--gold);font-weight:600}.muted{color:var(--muted)}.landing{max-width:1500px;margin:auto;display:grid;grid-template-columns:1fr 1.05fr;min-height:calc(100svh - 94px)}.landing-copy{padding:clamp(2rem,5vw,5rem);align-self:center}.landing-copy p{max-width:36rem}.landing-image{position:relative;min-height:540px;overflow:hidden}.landing-image img{width:100%;height:100%;object-fit:cover;position:absolute}.landing-image:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,var(--bg),transparent 22%),linear-gradient(0deg,#07131bb3,transparent 60%)}.image-caption{position:absolute;bottom:2rem;left:2rem;right:2rem;z-index:1;color:#e0e5df;font-family:Georgia,serif;font-style:italic}.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;margin:1.6rem 0 .7rem}.level-note{min-height:3.5rem;font-size:.9rem;color:var(--muted)}.actions{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center;margin:1rem 0}.fine{font-size:.85rem;color:var(--muted)}.journey-bar{max-width:1400px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:1.25rem 2rem;gap:1rem;font-size:.9rem}.journey-bar span{display:block}.journey-bar strong{font-weight:400;color:var(--gold)}.game{max-width:1400px;margin:auto;padding:0 2rem 3rem}.story-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:2.5rem;align-items:start}.scene-visual{position:sticky;top:1.5rem;margin:0}.scene-visual img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:3px;background:var(--panel)}figcaption{font-size:.8rem;color:var(--muted);padding:.7rem 0;font-family:Georgia,serif}.narrative{font-family:Georgia,'Times New Roman',serif;font-size:1.13rem}.narrative p{margin:.8rem 0 1.1rem;line-height:1.8}.narrative h1{font-size:2.8rem}.puzzle-section{border-top:1px solid var(--line);margin-top:2rem;padding-top:1.5rem;scroll-margin-top:1rem}.puzzle-heading{display:flex;gap:1rem;justify-content:space-between;align-items:center}.puzzle-tabs{display:flex;gap:.5rem}.puzzle-shell{border:1px solid var(--line);border-radius:7px;padding:clamp(1rem,3vw,2rem);background:var(--panel);min-height:400px}.puzzle-shell h2{font-size:1.8rem}.prompt{white-space:pre-line;max-width:66rem;line-height:1.7}.answer-row{display:flex;gap:.6rem;flex-wrap:wrap;align-items:end;margin:1rem 0}.answer-row label{display:grid;gap:.5rem;flex:1;max-width:30rem}input,select{padding:.8rem;min-width:0}input[type=number]{max-width:18rem}.choices{display:grid;gap:.65rem;max-width:62rem;margin:1.5rem 0}.choice{text-align:left;background:var(--bg);padding:1rem;line-height:1.5}.feedback{min-height:3rem;padding:.5rem 0;line-height:1.6}.feedback.good{color:var(--good)}.feedback.bad{color:var(--bad)}.explanation{padding:1rem 1.3rem;border-left:3px solid var(--good);background:#102c2b;line-height:1.7;margin:1rem 0}.hint{border-left:2px solid var(--gold);padding:.5rem 1rem;line-height:1.6}.next-row{display:flex;justify-content:flex-end;margin-top:1.5rem}.lab{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.lab 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var(--line);padding:1rem;border-radius:5px;overflow:hidden}.sim-title{color:var(--gold);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:.8rem}.lift-shaft{height:180px;width:100%;display:flex;flex-direction:column-reverse;position:relative}.floor{border-bottom:1px dashed #314a55;height:25%;display:flex;align-items:center;color:var(--muted);font:14px monospace;padding-left:.5rem}.lift-car{position:absolute;left:35%;width:35%;height:22%;background:#b4c4c9;color:#0b1922;border:3px solid #e4e9e8;display:grid;place-items:center;transition:bottom .22s ease}.signal-lamps{display:flex;gap:1rem;flex-wrap:wrap;align-items:center;justify-content:center;min-height:100px}.signal-lamp{width:45px;height:45px;border-radius:50%;border:3px solid #405665;background:#1f333e}.signal-lamp.on{background:var(--gold);box-shadow:0 0 20px #d5ad7055}.trolley-track{height:75px;border-bottom:3px solid var(--gold);display:flex;align-items:flex-end;position:relative;margin:1rem}.trolley{background:#d5ad70;color:#0b1922;padding:.5rem;position:absolute;transition:left .2s;max-width:4rem}.output-strip{display:flex;gap:.4rem;flex-wrap:wrap;min-height:3rem;margin-top:1rem}.output-strip span{padding:.4rem .6rem;background:var(--panel2);border:1px solid var(--line);font-family:monospace}.trace{max-height:180px;overflow:auto;white-space:pre-wrap;background:var(--bg);padding:.7rem;font-family:monospace;font-size:.85rem;line-height:1.5}.lab-status{min-height:2.7rem;color:var(--muted);line-height:1.5}.port-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem}.port-table td,.port-table th{border-bottom:1px solid var(--line);padding:.65rem;text-align:left;line-height:1.5}.reference details{border-top:1px solid var(--line);padding:.8rem 0}.reference summary{cursor:pointer;color:var(--gold);line-height:1.5}.reference pre{white-space:pre-wrap;line-height:1.6}dialog{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:8px;width:min(780px,94vw);max-height:90svh;padding:1.5rem}dialog::backdrop{background:#000b;backdrop-filter:blur(4px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:1rem}.dialog-head h2{font-size:1.8rem}.chapter-list{display:grid;gap:.5rem}.chapter-list button{text-align:left;display:flex;justify-content:space-between;gap:1rem}.settings-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--line)}.settings-row input[type=checkbox]{width:22px;height:22px}.skip{position:absolute;left:1rem;top:-100px;background:var(--gold);color:var(--bg);padding:1rem;z-index:100}.skip:focus{top:1rem}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.save-error{background:#572e28;color:white;padding:1rem}.ending{max-width:780px;margin:3rem auto;padding:1rem}progress{width:100%;height:5px;accent-color:var(--gold)}@media(max-width:850px){header{height:auto;padding:1rem;flex-wrap:wrap}.brand{font-size:.75rem}nav{gap:0}nav button{padding:.5rem;font-size:.85rem}.landing{grid-template-columns:1fr}.landing-copy{padding:2rem 1.5rem;order:2}.landing-image{min-height:300px;order:1}.landing-image:after{background:linear-gradient(0deg,var(--bg),transparent 55%)}.story-grid{grid-template-columns:1fr;gap:.5rem}.scene-visual{position:static}.scene-visual img{aspect-ratio:16/9}.game{padding:0 1rem 2rem}.journey-bar{padding:1rem}.narrative{font-size:1.08rem}.narrative h1{font-size:2.2rem}.lab{grid-template-columns:1fr}.puzzle-heading{align-items:start;flex-wrap:wrap}.puzzle-tabs{margin-bottom:1rem}.landing h1{font-size:3.5rem}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}body.large-text{font-size:1.15rem}body.reduce-motion *{transition:none!important;animation:none!important}

.puzzle-section{overflow-anchor:none}.active-instruction{border-color:var(--gold);background:#3b3527}.reference pre,.explanation pre{overflow-wrap:anywhere;white-space:pre-wrap}.lab>div{min-width:0}.simulation .signal-lamps{gap:.5rem}.simulation .signal-lamp{width:32px;height:32px}

.tile button{min-height:44px;min-width:44px}


/* Memory & Mind hint-token trials */
#token-bank{border-color:#6f6852;color:var(--gold)}
.hint-bank{line-height:1.65}.token-total{display:flex;align-items:center;gap:1rem;padding:1rem 1.2rem;margin:.5rem 0 1rem;background:#0e272e;border:1px solid #6f6852;border-radius:7px}.token-total span{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;border:2px solid var(--gold);font:2rem/1 Georgia,serif;color:var(--gold)}.token-total strong{font:1.2rem/1.2 Georgia,serif;font-weight:400}.trial-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:.55rem;margin:1rem 0}.trial-stats span{padding:.7rem;background:var(--panel2);border:1px solid var(--line);border-radius:5px;font-size:.82rem}.trial-stats strong{display:block;color:var(--gold);font-size:1.05rem;margin-top:.15rem}.trial-progress{height:8px;background:#07131b;border:1px solid var(--line);border-radius:999px;overflow:hidden;margin:.3rem 0 .5rem}.trial-progress i{display:block;height:100%;background:var(--gold);transition:width .25s ease}.trial-streak{font-size:.85rem;color:var(--muted);margin:0 0 1.4rem}.trial-streak strong{color:var(--ink)}.trial-instruction{text-align:center;color:var(--muted);margin:.5rem 0 1rem}.trial-question{max-width:430px;margin:1rem auto 1.3rem;text-align:center}.trial-question>span{display:block;font:clamp(2.2rem,7vw,4rem)/1.1 Georgia,serif;color:var(--gold);margin:.6rem 0 1.4rem}.trial-number{display:block;width:min(280px,100%);margin:.4rem auto 0;text-align:center;font-size:1.35rem}.trial-grid{display:grid;grid-template-columns:repeat(3,74px);gap:.55rem;justify-content:center;margin:1rem auto 1.2rem}.trial-grid button{width:74px;height:74px;padding:0}.trial-grid button:disabled{opacity:1}.trial-grid button.flash{background:var(--gold);border-color:#f5deb7;color:#10252b;box-shadow:0 0 24px #ddb78088}.trial-display{display:grid;place-items:center;min-height:110px;max-width:420px;margin:1rem auto;border:1px solid var(--line);border-radius:8px;background:#07131b;font:1.7rem/1 Georgia,serif;letter-spacing:.04em}.trial-display.trial-shape{font-size:4rem;color:var(--gold)}.trial-display.trial-digits{font-size:3.3rem;color:var(--gold);font-variant-numeric:tabular-nums}.trial-display.trial-red{background:#7b2929;color:#fff}.trial-display.trial-blue{background:#274d79;color:#fff}.trial-display.trial-green{background:#2d6548;color:#fff}.trial-display.trial-yellow{background:#b18a27;color:#111}.trial-display.trial-purple{background:#654379;color:#fff}.trial-display.trial-orange{background:#a65425;color:#fff}.trial-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;margin:1rem 0}.trial-choices button{min-height:58px;display:flex;align-items:center;justify-content:center;gap:.45rem}.trial-choices button b{font-size:1.65rem;color:var(--gold)}.trial-swatch{width:18px;height:18px;border-radius:50%;border:1px solid #ffffff66}.trial-swatch.trial-red{background:#c44}.trial-swatch.trial-blue{background:#4c78b8}.trial-swatch.trial-green{background:#4a986c}.trial-swatch.trial-yellow{background:#e0b63b}.trial-swatch.trial-purple{background:#9461a8}.trial-swatch.trial-orange{background:#dd783a}.trial-response{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap;margin:1rem 0}.trial-response>span{flex:1;min-width:180px;padding:.7rem;background:#10282f;border-radius:4px}.trial-hidden{display:none}.token-award{text-align:center;padding:1rem}.token-award h3{margin:.7rem 0}.token-medallion{display:grid;place-items:center;width:92px;height:92px;margin:.5rem auto 1rem;border:3px double var(--gold);border-radius:50%;font-size:3rem;color:var(--gold);box-shadow:0 0 34px #ddb78033}.trial-result-flash{position:fixed;inset:0;display:grid;place-items:center;pointer-events:none;z-index:10000;font-family:Arial,Helvetica,sans-serif;font-weight:800;font-size:clamp(6rem,20vw,12rem);opacity:0;transform:scale(.65);transition:opacity .12s ease,transform .16s ease;text-shadow:0 5px 25px #0004}.trial-result-flash.visible{opacity:.96;transform:scale(1)}.trial-result-flash.correct{color:#2f9c54}.trial-result-flash.incorrect{color:#bb3d35}
@media(max-width:720px){.trial-stats{grid-template-columns:1fr}.trial-grid{grid-template-columns:repeat(3,minmax(0,72px));gap:.4rem}.trial-grid button{width:auto;height:auto;aspect-ratio:1}.trial-choices{grid-template-columns:repeat(2,1fr)}.token-total span{width:50px;height:50px}#token-bank{font-size:.72rem}}