:root{--ink:#18313b;--muted:#66777b;--paper:#f6f8f3;--line:#d8e2dc;--green:#1fa66a;--green2:#087449;--blue:#2d83d4;--blue2:#185c98;--coral:#f26452;--coral2:#b93e32;--yellow:#ffd052;--cell:calc(100% / 6);font-family:"Avenir Next","Trebuchet MS",system-ui,sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}html,body{width:100%;height:100%;min-width:1050px;min-height:700px;overflow:hidden}body{margin:0;color:var(--ink);background:var(--paper)}button{font:inherit;color:inherit;cursor:pointer}:focus-visible{outline:4px solid #005fcc;outline-offset:3px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.lesson{position:relative;width:100%;height:100%;display:grid;grid-template-rows:78px minmax(0,1fr);gap:12px;padding:12px 18px 16px}.mission{position:relative;display:grid;grid-template-columns:56px minmax(340px,1fr) minmax(300px,430px);align-items:center;gap:17px;padding:10px 82px 10px 20px;border:1px solid #c8dfd0;border-radius:16px;background:#edf8f0}.mission span,.controls header span,.predict span,.evidence span,.overlay>span{color:var(--green2);font-size:10px;font-weight:950;letter-spacing:.1em;text-transform:uppercase}.mission h1{margin:2px 0 0;font-size:22px;line-height:1.1}.mission p{margin:0;padding-left:20px;border-left:1px solid #b9d8c5;color:#4e6668;font-size:13px;line-height:1.4}.bot{position:relative;width:50px;height:45px;border:3px solid var(--ink);border-radius:15px;background:#fff;box-shadow:inset 0 -8px #ddecf0}.bot i{position:absolute;left:21px;top:-12px;width:3px;height:10px;background:var(--ink)}.bot i:after{position:absolute;left:-4px;top:-5px;width:8px;height:8px;content:"";border:2px solid var(--ink);border-radius:50%;background:var(--yellow)}.bot b{position:absolute;top:15px;width:8px;height:10px;border-radius:50%;background:var(--blue)}.bot b:nth-of-type(1){left:10px}.bot 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14px;background:#fff}.robot .antenna{position:absolute;left:49%;top:8px;width:3px;height:15px;background:var(--ink)}.robot .antenna:after{position:absolute;left:-4px;top:-6px;width:9px;height:9px;content:"";border:2px solid var(--ink);border-radius:50%;background:var(--coral)}.robot.bump{animation:bump .32s ease-out}.trail{position:absolute;inset:0;z-index:3;pointer-events:none}.trail i{position:absolute;width:11px;height:11px;transform:translate(-50%,-50%);border:2px solid #fff;border-radius:50%;background:var(--blue)}.legend{height:28px;display:flex;align-items:end;justify-content:center;gap:28px;color:var(--muted);font-size:11px;font-weight:800}.controls{display:flex;flex-direction:column;padding:20px}.controls header h2{margin:4px 0 5px;font-size:23px;line-height:1.08}.controls header p{margin:0;color:var(--muted);font-size:13px}.palette{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:16px}.palette button{min-height:86px;display:grid;place-items:center;align-content:center;gap:2px;padding:8px;border:2px solid transparent;border-radius:12px;color:#fff;box-shadow:inset 0 -6px #0000001f,0 4px 0 #20363029}.palette button:hover{transform:translateY(-3px)}.palette .forward{background:var(--green)}.palette .turn{background:var(--blue)}.palette b{font-size:32px;line-height:.85}.palette strong{font-size:13px}.palette small{font-size:9px;opacity:.85}.program-wrap{margin-top:16px}.program-wrap>div{display:flex;justify-content:space-between;font-size:13px}.program-wrap>div span{color:var(--muted);font-size:11px;font-weight:800}.program{min-height:104px;display:flex;align-content:flex-start;flex-wrap:wrap;gap:7px;margin:8px 0 0;padding:12px;border:2px dashed #c8d7d2;border-radius:12px;background:#fafcf9;list-style:none}.program:empty:after{width:100%;align-self:center;content:"Your steps appear here";color:#94a29f;text-align:center;font-size:12px;font-weight:800}.program 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