:root{color-scheme:light;font:16px/1.5 system-ui,-apple-system,sans-serif;color:#20252a;background:#fff}
*{box-sizing:border-box}body{margin:0;padding:16px}main{max-width:600px;margin:auto}h1{font-size:22px;line-height:1.25;margin:0 0 8px}p{margin:0 0 12px}.intro,.hint,.note{color:#59616a}button,select{font:inherit;color:inherit;min-height:44px;border:1px solid #9ba5ad;background:white;border-radius:6px;padding:10px 12px}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}button:hover:not(:disabled){border-color:#be1237}button[aria-pressed=true]{border-color:#be1237;background:#fff1f4;color:#9f1030}:focus-visible{outline:3px solid #245bba;outline-offset:3px}input{accent-color:#be1237}
.mode{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;border:0;padding:0;margin:16px 0}.mode label{display:flex;align-items:center;gap:8px;min-height:48px;padding:9px 12px;border:1px solid #9ba5ad;border-radius:6px;cursor:pointer;font-weight:600;font-size:14px}.mode label:has(:checked){border-color:#be1237;background:#fff1f4}.mode input{margin:0;width:16px;height:16px;flex-shrink:0}
.readout{display:flex;justify-content:space-between;align-items:center;padding:4px 2px 14px;gap:12px}.eyebrow{display:block;text-transform:uppercase;letter-spacing:.1em;font-size:11px;color:#59616a}#selected{display:block;font-size:26px;line-height:1.25;color:#9f1030}.indicator{width:180px;height:74px;flex-shrink:0}.indicator text{font-size:17px;font-weight:600;fill:#59616a}.indicator text.active{fill:#be1237;font-weight:800}
.scene{position:relative}.scene>svg{display:block;width:100%;height:auto}.gate-labels{font-size:24px;font-weight:600;fill:#d4dbe0}.knob-numbers{font:600 13px system-ui,sans-serif}.console-caption{font:500 11px system-ui,sans-serif;letter-spacing:3px;fill:#a9b4bc}#lever{position:absolute;left:55%;top:54.444%;width:18.667%;height:24.889%;min-height:0;min-width:48px;aspect-ratio:1;border-radius:50%;transform:translate(-50%,-50%);padding:0;border:0;background:transparent;touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab}#lever.dragging{cursor:grabbing}#lever:disabled{opacity:1}.scene:has(#lever:focus-visible){isolation:isolate}
.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}.actions button{font-size:14px;font-weight:600}.hint{font-size:13px;min-height:3em;margin:8px 0 0}details{font-size:13px;color:#59616a}summary{min-height:44px;padding:12px 0;cursor:pointer;color:#9f1030}a{color:#9f1030;text-underline-offset:2px}.note{font-size:12px;margin:10px 0 0;border-top:1px solid #dfe3e7;padding-top:12px}.directions{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:360px;margin:8px auto 16px}.directions button{font-size:13px;padding:10px 4px}.directions [data-direction=up]{grid-column:2}.directions [data-direction=left]{grid-row:2;grid-column:1}.directions [data-direction=right]{grid-row:2;grid-column:3}.directions [data-direction=down]{grid-row:3;grid-column:2}
#challenge{border-left:3px solid #be1237;background:#f7f8fa;padding:12px;margin-bottom:14px}.exercise-label{font-size:12px;font-weight:600;display:block}select{width:100%;font-size:14px;padding:8px}.question{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-top:12px}#request{font-size:18px}#progress{white-space:nowrap;font-size:12px;color:#59616a}#answer{font-size:14px;margin:5px 0 0;min-height:3em}.scene-actions{position:absolute;left:50%;top:42%;transform:translate(-50%,-50%);z-index:2;pointer-events:none}#next,#restart{pointer-events:auto;min-width:140px;min-height:48px;padding:12px 20px;font-size:16px;font-weight:700;background:#be1237;border:2px solid #fff;border-radius:8px;color:#fff;box-shadow:0 4px 18px #0006;white-space:nowrap}#next:hover,#restart:hover{background:#9f1030;border-color:#fff}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}[hidden]{display:none!important}
@media(max-width:420px){body{padding:12px}h1{font-size:20px}.mode label{padding:9px 8px;font-size:13px}.indicator{width:155px;height:66px}#selected{font-size:23px}.actions button{padding:10px 6px;font-size:13px}}

#dashboard{background:#202d37;border-radius:12px;padding:10px 8px 8px;margin-bottom:8px;color:#eef3f6}#dashboard svg{display:block;width:100%;height:auto;max-height:180px}.dashboard-caption{text-align:center;color:#c9d4dd;font-size:12px;margin:0 0 4px}.dial-value{font:700 28px system-ui,sans-serif;fill:#fff}.dial-unit{font:12px system-ui,sans-serif;fill:#ced9e2}.dial-label{font:600 12px system-ui,sans-serif;fill:#ced9e2;letter-spacing:1px}.dial-tick{font:11px system-ui,sans-serif;fill:#ced9e2;text-anchor:middle}#engine-state{text-align:center;font-size:13px;line-height:1.4;margin:4px 0 0;min-height:2.8em}
@media(max-width:420px){.mode label{gap:5px;padding:8px 5px;font-size:12px}.dashboard-caption{font-size:11px}#engine-state{font-size:12px}}

.scene-actions.show-result{width:calc(100% - 32px);max-width:320px;top:50%;padding:20px 16px;text-align:center;background:#fff;border:1px solid #dfe3e7;border-radius:12px;box-shadow:0 8px 30px #0008;pointer-events:auto}#result{margin-bottom:12px}#result-score{display:block;font-size:clamp(28px,8vw,40px);line-height:1.25;color:#9f1030;margin:4px 0}#result>span:last-child{font-size:14px}.show-result #restart{max-width:100%;min-width:0;white-space:normal}

#scenario{font-size:14px;line-height:1.5;margin:8px 0}#scenario:not([hidden])+#answer{font-size:13px;color:#59616a;min-height:0}