@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--ink:#172333;--muted:#566373;--paper:#f5f7fb;--blue:#196b5c;--line:#dce2ec;--lime:#d3f36b;--water:#047780;--pink:#f4d2dd;--orange:#f4a351}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',sans-serif;font-size:16px;line-height:1.55}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #ff981f;outline-offset:4px}button{color:inherit}h1,h2,h3,.brand,.number{font-family:'Space Grotesk',sans-serif}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2rem,4vw,3.2rem);line-height:1.13;letter-spacing:-1.5px;margin-bottom:16px}h2{font-size:1.6rem;letter-spacing:-.6px}h3{font-size:1.3rem;margin-bottom:8px}.skip{position:absolute;top:-80px;left:20px;background:white;padding:15px;z-index:99}.skip:focus{top:10px}.topbar{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:white;padding:0 5vw;gap:20px}.brand{display:flex;gap:12px;align-items:center;font-weight:700;font-size:25px;letter-spacing:-1px;background:none;border:0;padding:0}.brandmark{display:grid;place-items:center;background:var(--blue);color:white;border-radius:11px;width:40px;height:40px;font-size:28px}.toplinks{display:flex;align-items:center;gap:28px}.navbtn{border:0;background:none;font-weight:600;color:var(--muted);padding:10px 0}.navbtn.active{color:var(--blue);box-shadow:0 3px var(--blue)}.profile{width:39px;height:39px;display:grid;place-items:center;border-radius:50%;background:var(--lime);font-weight:700}.shell{max-width:1240px;margin:auto;padding:40px 36px 24px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1.9px;text-transform:uppercase;margin-bottom:14px}.welcome{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:28px}.welcome p{color:var(--muted);margin:0}.badge{font-size:13px;border:1px solid var(--line);border-radius:30px;padding:7px 13px;background:white;white-space:nowrap}.feature{display:grid;grid-template-columns:1.2fr 1fr;background:var(--blue);color:white;border-radius:22px;overflow:hidden;margin-bottom:36px}.featurecopy{padding:32px 36px}.feature h2{font-size:2rem;line-height:1.15;max-width:370px;margin-bottom:14px}.feature p{max-width:400px;color:#dbe2ff;margin-bottom:24px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:46px;padding:11px 20px;border:1px solid var(--line);border-radius:10px;background:white;font-weight:700;text-decoration:none}.btn.primary{background:var(--blue);color:white;border-color:var(--blue)}.btn.lime{background:var(--lime);border-color:var(--lime);color:#233709}.btn.ghost{background:transparent;color:inherit}.featureart{display:flex;align-items:center;justify-content:center;background:linear-gradient(0deg,#ffffff08,#ffffff08),repeating-linear-gradient(0deg,transparent 0 31px,#ffffff12 32px),repeating-linear-gradient(90deg,transparent 0 31px,#ffffff12 32px);padding:30px}.fraction-demo{width:100%;max-width:330px;transform:rotate(-5deg);border:1px solid #ffffff50;background:#2449e4;box-shadow:12px 15px 0 #0c2eaf;border-radius:18px;padding:24px}.mathline{display:flex;align-items:center;justify-content:center;gap:20px;font-size:36px;font-family:'Space Grotesk',sans-serif}.frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;line-height:1.2;min-width:28px}.frac span:first-child{border-bottom:2px solid;padding:0 5px 4px}.frac span:last-child{padding:4px 5px 0}.strip{display:flex;height:30px;border:2px solid currentColor;border-radius:5px;overflow:hidden;margin-top:20px}.strip i{flex:1;border-right:1px solid currentColor}.strip i:last-child{border:0}.strip i.fill{background:var(--lime)}.sectionline{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.sectionline p{font-size:14px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{background:white;border:1px solid var(--line);border-radius:17px;overflow:hidden;display:flex;flex-direction:column}.cardart{height:140px;display:flex;align-items:center;justify-content:center;position:relative}.cardart.water{background:#d9f3f4;color:#07636b}.cardart.market{background:#ecf5cd;color:#405b05}.cardart.engine{background:#f5e2ed;color:#963458}.cardbody{padding:22px;flex:1;display:flex;flex-direction:column}.cardbody p{color:var(--muted);font-size:14px;margin-bottom:18px}.cardbody .btn{width:100%;margin-top:auto}.cardmeta{display:flex;justify-content:space-between;font-size:12px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);margin-bottom:13px}.mini-fraction{font-family:'Space Grotesk',sans-serif;font-size:27px;display:flex;gap:20px;align-items:center}.mini-bars{display:grid;grid-template-columns:repeat(4,25px);gap:4px;transform:rotate(-8deg)}.mini-bars i{height:50px;background:#16858d;border-radius:4px}.mini-bars i:last-child{background:#fff;border:1px dashed #16858d}.percent{font-size:64px;line-height:1;font-family:'Space Grotesk',sans-serif;letter-spacing:-3px}.equation{font-family:'Space Grotesk',sans-serif;font-size:34px;letter-spacing:-1px}.underbar{display:flex;gap:12px;align-items:center;border-top:1px solid var(--line);margin-top:32px;padding-top:20px;color:var(--muted);font-size:14px}.underbar strong{color:var(--ink)}footer{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;padding:26px 0 0;gap:16px}.back{border:0;background:none;padding:0;margin-bottom:24px;color:var(--muted)}.hidden{display:none!important}@media(max-width:760px){.topbar{padding:0 20px;height:74px}.toplinks{gap:18px}.brand{font-size:21px}.shell{padding:28px 20px}.welcome{display:block}.welcome .badge{display:inline-block;margin-top:16px}.feature{grid-template-columns:1fr}.featurecopy{padding:26px}.featureart{display:none}.cards{grid-template-columns:1fr}.card{display:grid;grid-template-columns:110px 1fr}.cardart{height:100%}.cardbody{padding:20px}.mini-fraction{flex-direction:column;gap:10px}.mini-bars{grid-template-columns:repeat(4,14px)}.mini-bars i{height:35px}.percent{font-size:36px}.equation{font-size:22px;writing-mode:vertical-rl}.sectionline{display:block}.profile{display:none}footer{flex-direction:column;gap:5px}.toplinks .navbtn{font-size:14px}.underbar{align-items:flex-start}.feature h2{font-size:1.8rem}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.navcount{display:inline-block;background:#e8edff;border-radius:12px;padding:0 7px;font-size:12px}.small{font-size:14px;color:var(--muted);line-height:1.6}.muted{color:var(--muted)}.overview-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;margin-bottom:38px}.lessoncard,.checkcard{padding:30px;background:white;border:1px solid var(--line);border-radius:18px}.checkcard{background:#e9edfc}.worked{background:var(--paper);border-left:3px solid var(--blue);padding:18px;margin:24px 0}.worked>span{font-size:12px;letter-spacing:1px;font-weight:700}.worked p{margin:8px 0 0}.checkcard .small{margin:20px 0 0}.missionlist{display:grid;gap:10px}.missionrow{display:flex;align-items:center;gap:20px;text-align:left;border:1px solid var(--line);border-radius:13px;background:white;padding:18px 20px;width:100%}.missionrow:hover{border-color:var(--blue);background:#fafbff}.missionnum{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:var(--paper);font-family:'Space Grotesk',sans-serif;font-weight:700;flex-shrink:0}.missionnum.done{background:var(--lime)}.missionname{display:flex;flex-direction:column;flex:1}.missionname span{font-size:14px;color:var(--muted)}.missionstatus{font-size:13px;color:var(--muted)}.play-shell{max-width:1200px}.playhead{display:flex;justify-content:space-between;gap:20px}.playhead .back{margin-bottom:0}.steps{display:flex;gap:7px;margin:24px 0 26px}.steps span{height:5px;flex:1;border-radius:3px;background:var(--line)}.steps .now{background:var(--blue)}.steps .past{background:#8197f3}.mission-heading{margin-bottom:24px}.mission-heading h1{font-size:clamp(1.8rem,3vw,2.6rem)}.mission-heading .eyebrow{margin-bottom:8px}.play-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:start}.gameboard{border:1px solid var(--line);border-radius:20px;min-height:455px;padding:26px;display:flex;align-items:center;justify-content:center;background-color:white;background-image:radial-gradient(#b8c3d233 1px,transparent 1px);background-size:16px 16px}.gameboard.water{background-color:#e6f5f6}.gameboard.market{background-color:#f1f6e4}.gameboard.engine{background-color:#f8eaf1}.brief{padding:10px 4px}.brief .prompt{line-height:1.75;font-size:17px}.brief h2{line-height:1.25}.full{width:100%}.hintbtn{width:100%;border:0;background:none;padding:15px;color:var(--blue);font-weight:600}.hintbox{background:#fff5d7;border:1px solid #e5d492;border-radius:12px;padding:16px;margin:12px 0}.hintbox p{margin:7px 0;font-size:15px}.hintbox small{font-size:12px;color:#665217}.concept-toggle{border:0;border-top:1px solid var(--line);width:100%;padding:18px 0 8px;text-align:left;background:none;font-weight:600;font-size:14px}.concept{font-size:14px;color:var(--muted)}.concept p{margin:12px 0}.quiet{font-size:13px;color:var(--muted);margin-top:22px}.feedback{border-radius:12px;padding:17px;margin-bottom:20px}.feedback p{font-size:15px;margin:6px 0 0}.feedback.success{background:#e3f4d4;border:1px solid #b1d496;color:#264317}.feedback.notice{background:#fff1d8;border:1px solid #e4c590;color:#634309}.feedback-slot{min-height:6px}.water-stage,.grid-stage,.money-stage,.balance-stage{width:100%}.tank-label{display:flex;justify-content:space-between;max-width:275px;margin:0 auto 10px;font-size:12px;letter-spacing:1px;font-weight:700;color:#08636d}.tank-label span{font-weight:400;letter-spacing:0}.tank{border:3px solid #14818d;border-top:0;border-radius:0 0 18px 18px;overflow:hidden;max-width:275px;margin:auto;display:flex;flex-direction:column;height:260px;background:#ffffffa0}.tankpart{flex:1;min-height:29px;border:0;border-top:1px dashed #6daeb6;background:transparent;padding:0 12px;text-align:right;color:#21606a;font-size:12px;position:relative}.tankpart.filled{background:#228fbc;color:white;border-top-color:#9bcbdc}.tankpart:hover:not(:disabled){background:#b9deea}.tankpart.filled:hover:not(:disabled){background:#137caa}.tankpart:disabled{opacity:1}.tankpart:focus-visible{outline-offset:-4px;z-index:1}.quantity{display:flex;align-items:center;justify-content:center;gap:26px;text-align:center;margin-top:24px}.quantity strong{font-family:'Space Grotesk',sans-serif;font-size:32px;line-height:1.1}.quantity strong span{font-size:24px;color:var(--muted)}.quantity small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.roundbtn{width:46px;height:46px;border-radius:50%;border:1px solid #bacdd2;background:white;font-size:20px;display:grid;place-items:center}.boardnote{font-size:12px;color:var(--muted);text-align:center;margin:20px 0 0}.hundred{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;width:100%;max-width:280px;margin:auto;aspect-ratio:1}.hundred i{border:1px solid #a3b879;background:#fff;border-radius:2px}.hundred i.shaded{background:#739a22;border-color:#5b8113}.range-label{display:block;text-align:center;font-size:14px;margin-top:20px}input[type=range]{width:100%;accent-color:var(--blue);margin:14px 0 4px;min-height:28px}.rangeends{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.receipt{background:white;max-width:320px;padding:26px;margin:0 auto;box-shadow:0 7px 0 #d4ddbb,0 13px 26px #23350010;border-top:5px solid #6f9621}.receipt .eyebrow{font-size:10px;text-align:center;letter-spacing:1.5px}.receipt h3{text-align:center}.receiptrow{display:flex;justify-content:space-between;gap:18px;font-size:14px;padding:10px 0}.receipt-total{border-top:2px dashed var(--line);display:flex;flex-direction:column;padding-top:18px;margin-top:8px}.receipt-total>span{font-size:14px;color:var(--muted)}.receipt-total>strong{font-family:'Space Grotesk',sans-serif;font-size:42px}.receipt-foot{font-size:12px;color:var(--muted)}.coins{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:26px}.coin{min-width:56px;height:48px;border:1px solid #aabf7d;border-radius:24px;background:white;font-weight:700}.coin.clear{border:0;background:transparent;font-size:14px}.live-equation{text-align:center;font-family:'Space Grotesk',sans-serif;font-size:34px;margin-bottom:28px}.balance-pans{display:grid;grid-template-columns:1fr 28px 1fr;gap:10px;align-items:center}.pan{display:flex;flex-wrap:wrap;justify-content:center;align-content:center;gap:5px;padding:14px 4px;min-height:150px;border-bottom:4px solid #b35e88;background:#ffffff80;border-radius:12px}.xblock{background:#9a3d71;color:white;border-radius:5px;font-size:22px;font-weight:700;display:grid;place-items:center;width:34px;height:42px}.unitblock{background:#e7b2cf;border:1px solid #c988ae;display:grid;place-items:center;width:24px;height:27px;border-radius:4px;font-size:13px}.equal-sign{font-size:28px;text-align:center}.movecontrols{display:flex;flex-direction:column;gap:10px;margin-top:25px}.movecontrols>span{font-size:13px;color:var(--muted)}.movecontrols>div{display:flex;gap:7px;flex-wrap:wrap}.move{min-width:45px;min-height:42px;border:1px solid #c999b3;background:white;border-radius:8px;font-weight:700}.move.reset{font-size:13px;padding:5px 10px;margin-left:auto;font-weight:400}.move:disabled{opacity:.35}.history{font-size:13px;border-top:1px solid #d9b7cd;margin-top:16px;padding-top:14px;text-align:center;overflow-wrap:anywhere}.text-stage{width:100%;padding:15px}.pencil-label{font-size:12px;letter-spacing:1px;color:var(--muted);margin-bottom:26px}.text-stage label{font-weight:700;display:block;margin-bottom:8px}.answerrow{display:flex;gap:12px;align-items:center}.answerrow input{min-width:0;width:100%;background:white;border:2px solid #b8c4d5;border-radius:10px;padding:14px;font-family:'Space Grotesk',sans-serif;font-size:22px}.answerrow>span{font-size:14px;color:var(--muted)}.text-stage .small{margin-top:16px}.independence{font-size:14px;border-top:1px solid #b9cad5;margin-top:30px;padding-top:20px;display:flex;gap:12px}.independence>span{font-size:24px}.result{max-width:720px;margin:35px auto 80px;text-align:center;background:white;border:1px solid var(--line);border-radius:24px;padding:48px}.result-symbol{width:76px;height:76px;display:grid;place-items:center;margin:0 auto 25px;background:var(--lime);border-radius:22px;font-size:40px}.result p{color:var(--muted)}.result .small{margin:25px 0 0}.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.statgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0}.statgrid>div{background:white;border:1px solid var(--line);border-radius:16px;padding:24px}.statgrid strong{font-family:'Space Grotesk',sans-serif;font-size:36px}.statgrid strong span{font-size:22px;color:var(--muted)}.statgrid p{font-size:14px;margin:4px 0 0;color:var(--muted)}.progresswork{padding:25px 0;border-bottom:1px solid var(--line)}.textlink{background:none;border:0;color:var(--blue);font-weight:600}.progress-track{height:7px;background:var(--line);border-radius:7px;overflow:hidden}.progress-track>span{height:100%;background:var(--blue);display:block}.progressrows>div{display:flex;justify-content:space-between;gap:16px;padding:14px 0;font-size:14px}.status{color:var(--muted);text-align:right}.status.complete{color:#347414}.localnote{max-width:700px;margin-top:30px;font-size:14px}.localnote p{color:var(--muted);margin-top:7px}@media(max-width:760px){.overview-grid,.play-grid{grid-template-columns:1fr}.lessoncard,.checkcard{padding:23px}.missionrow{gap:12px;padding:15px}.missionstatus{display:none}.missionname strong{font-size:15px}.missionname span{font-size:12px}.gameboard{min-height:340px;padding:23px}.brief{padding:6px 0}.playhead .back{font-size:14px}.playhead .small{font-size:12px;white-space:nowrap}.tank{height:240px}.text-stage{padding:5px}.result{padding:30px 20px;margin-top:20px}.result h1{font-size:2rem}.statgrid{gap:8px}.statgrid>div{padding:14px}.statgrid strong{font-size:28px}.statgrid p{font-size:12px}.progressrows>div{font-size:13px}.progressrows>div>span{max-width:55%}.progresswork .sectionline{display:flex}.progresswork h2{font-size:1.2rem}.textlink{font-size:13px}.balance-pans{grid-template-columns:1fr 23px 1fr;gap:6px}.live-equation{font-size:30px}.pan{min-height:160px}.tank-label{font-size:12px}}
.mobile-prompt{display:none}@media(max-width:760px){.mobile-prompt{display:block;color:var(--ink);font-size:16px;line-height:1.65;margin:18px 0 0}.brief .prompt{display:none}.tank{height:220px}.gameboard{min-height:320px}.gameboard:has(.text-stage){min-height:260px}.text-stage .independence{margin-top:18px;padding-top:15px}}@media(max-width:480px){.topbar{gap:10px;padding:0 16px}.brand{font-size:19px;gap:8px}.brandmark{width:34px;height:34px;font-size:25px}.toplinks{gap:12px}.toplinks .navbtn{font-size:13px;white-space:nowrap}.navcount{display:none}}
.walkthrough{background:white;border:1px solid var(--line);border-radius:22px;overflow:hidden}.walk-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 26px;border-bottom:1px solid var(--line);font-size:14px}.walk-top .textlink{font-size:13px}.walk-layout{display:grid;grid-template-columns:1fr 1fr;min-height:420px}.walk-visual{padding:36px;display:flex;justify-content:center;align-items:center;background:#e6f5f6}.market .walk-visual{background:#ecf3da}.engine .walk-visual{background:#f5e6ef}.walk-coach{padding:42px 34px}.walk-coach h1{font-size:2rem;letter-spacing:-.7px}.walk-coach p{line-height:1.8}.walk-coach .btn{margin-top:12px}.walk-back{margin-top:20px}.walk-back button{border:0;background:none;color:var(--muted);padding:8px 0}.whole-square,.quarter-picker{width:260px;aspect-ratio:1}.whole-square{display:grid;place-items:center;background:var(--blue);color:white;font-size:24px;border-radius:8px}.quarter-picker{display:grid;grid-template-columns:1fr 1fr;gap:8px}.quarter-picker button{background:var(--blue);color:white;border:2px solid #001dac;border-radius:8px;padding:15px;font-size:16px}.quarter-picker button:hover{background:#3155f6;transform:translateY(-2px)}.proof-grid{width:260px;gap:3px}.names{display:flex;align-items:center;justify-content:center;gap:13px;margin-top:24px;font-size:29px;font-family:'Space Grotesk',sans-serif}.names span{color:#254302}.names b{font-weight:400;color:var(--muted)}.quarter-proof>p{text-align:center;font-size:14px;margin:10px 0 0}.price-demo{width:100%;text-align:center}.demo-price{font-size:22px;margin-bottom:24px;font-weight:700}.price-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.price-groups>div{border:2px solid #6e9424;background:white;border-radius:8px;padding:12px 4px}.price-groups span{display:block;font-weight:700}.price-groups small{display:block;font-size:12px;margin-top:8px}.price-groups .taken-off{border-style:dashed;opacity:.6}.taken-off>span{text-decoration:line-through}.price-equation{font-size:22px;margin-top:22px}.demo-caption{font-size:12px;letter-spacing:1.5px;font-weight:700;text-align:center;margin-bottom:28px}.water-demo{width:100%;text-align:center}.demo-supply{height:120px;background:#117fac;display:grid;place-items:center;color:white;font-size:24px;border-radius:10px}.demo-halves{display:grid;grid-template-columns:1fr 1fr;gap:12px}.demo-half{height:120px;background:#117fac;display:flex;flex-direction:column;align-items:center;justify-content:center;color:white;border-radius:10px;font-size:20px}.demo-half.delivered{background:#267743}.demo-half strong{font-size:30px}.water-demo>p{font-size:14px;margin:24px 0 0}.energy-units{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.energy-units>span{display:grid;place-items:center;width:44px;height:54px;background:#883865;color:white;border-radius:7px;font-size:22px}.energy-units>.extra{background:#d48db8}.energy-units>.removed{background:transparent;color:#875875;border:2px dashed #b3819d;text-decoration:line-through}.demo-equation{font-family:'Space Grotesk',sans-serif;font-size:25px;text-align:center;margin-top:28px}.return-route{text-align:center;margin-top:25px;font-weight:700;color:#7b345a}.return-route span{display:block;font-weight:400;font-size:14px}.tap-cue{font-weight:700;color:var(--blue)}@media(max-width:760px){.walk-top{padding:16px;align-items:flex-start}.walk-top>span{max-width:130px}.walk-top .textlink{max-width:150px;text-align:right}.walk-layout{display:flex;flex-direction:column}.walk-visual{padding:24px;min-height:230px;order:2}.walk-coach{padding:24px;order:1}.walk-coach h1{font-size:1.65rem}.walk-coach .btn{width:100%}.walk-coach p{margin-bottom:12px}.walk-back{margin-top:10px}.whole-square,.quarter-picker,.proof-grid{width:220px}.tap-cue{font-size:0}.tap-cue:after{content:'Tap a piece below to continue ↓';font-size:16px}.names{font-size:26px}.price-groups{gap:5px}.price-groups small{font-size:12px}.demo-halves{gap:10px}.demo-half{font-size:17px}}
.puzzle-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,1fr);gap:28px;align-items:start}.puzzle-surface{border:1px solid var(--line);border-radius:20px;padding:25px;background:white}.puzzle-surface.water{background:#edf8fa}.puzzle-surface.market{background:#f4f8e9}.puzzle-surface.engine{background:#f8edf4}.puzzle-brief{padding:8px 0}.puzzle-brief .goal{font-size:17px;line-height:1.75}.puzzle-brief h2{font-size:24px}.puzzle-brief .hintbox{font-size:15px}.game-tools{display:flex;gap:30px;border-bottom:1px solid #b9d5dc;padding-bottom:18px;margin-bottom:24px}.game-tools>div{display:flex;align-items:center;gap:12px}.tool-label{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--muted)}.game-tools strong{font-family:'Space Grotesk',sans-serif;font-size:25px}.game-tools strong>span{font-size:16px;color:var(--muted)}.garden-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.garden-destination{padding:15px;background:#ffffffb0;border:2px solid #b6d4dc;border-radius:13px;text-align:left}.garden-destination:hover:not(:disabled){border-color:#086779;box-shadow:0 3px 0 #086779}.garden-destination:disabled{opacity:1}.garden-destination.ready{border-color:#63a271;background:#e1f4df}.garden-title{display:flex;justify-content:space-between;gap:10px;font-size:14px;margin-bottom:25px}.garden-title>span{font-size:12px;color:#195d40}.garden-meter{position:relative;height:160px;border:2px solid #8badb7;border-radius:0 0 8px 8px;background:white;overflow:visible}.garden-fill{position:absolute;bottom:0;left:0;right:0;background:#2294bf;border-radius:0 0 5px 5px;transition:height .3s ease}.garden-meter>i{position:absolute;left:0;right:0;border-top:1px solid #15333c15}.target-line{position:absolute;left:-5px;right:-5px;border-top:3px dashed #204753;z-index:1}.target-line>span{position:absolute;right:0;bottom:4px;font-size:12px;font-weight:700;background:#ffffffd9;padding:0 5px;border-radius:4px;color:#204753}.garden-readout{display:flex;align-items:baseline;gap:8px;margin-top:12px;font-size:22px;font-weight:700}.garden-readout>span{font-size:11px;font-weight:400;color:var(--muted)}.bench-heading{margin:24px 0 14px;display:flex;flex-direction:column;gap:4px}.bench-heading>strong{font-size:16px}.bench-heading>span{font-size:14px;color:var(--muted)}.packet-bench{display:flex;flex-wrap:wrap;gap:10px;min-height:92px}.packet{flex:1;min-width:92px;max-width:180px;border:2px solid #bad7de;background:white;border-radius:10px;padding:12px;color:#075a6d}.packet.selected{border-color:#125ce1;box-shadow:0 0 0 2px #125ce11f}.packet-scale{height:14px;border:1px solid #8bb6c5;background:#edf6fa;margin-bottom:8px;border-radius:3px;overflow:hidden}.packet-scale>i{display:block;height:100%;background:#1a89b4}.packet>strong{font-family:'Space Grotesk',sans-serif;font-size:23px}.packet>span{display:block;font-size:12px}.bench-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}.bench-actions .btn{font-size:14px}.bench-empty{font-weight:700;color:#38733c;align-self:center;flex:1;text-align:center;padding:20px;border:2px dashed #9fcea4;border-radius:12px}.basket-budget{display:grid;grid-template-columns:1fr 1fr;background:white;border:1px solid #bacb96;border-radius:12px;overflow:hidden}.basket-budget>div:not(.budget-gap){display:flex;flex-direction:column;padding:16px 20px;gap:3px}.basket-budget>div:nth-child(2){border-left:1px solid #d9e1c7}.basket-budget span{font-size:13px;color:var(--muted)}.basket-budget strong{font-size:30px;font-family:'Space Grotesk',sans-serif}.budget-gap{grid-column:1/-1;background:#ffefcf;padding:9px 18px;font-size:14px;color:#775012}.basket-budget.within .budget-gap{background:#deefc5;color:#31541b}.coupon-wallet{display:flex;gap:10px}.coupon{flex:1;min-width:0;background:white;border:2px dashed #91a96b;border-radius:10px;padding:12px 8px;text-align:center}.coupon strong{display:block;font-family:'Space Grotesk',sans-serif;font-size:23px;color:#344d16}.coupon span{font-size:12px;display:block}.coupon small{font-size:11px;display:block;color:var(--muted);margin-top:6px}.coupon.selected{background:#e5f3bd;border:2px solid #4e6c0e;box-shadow:0 3px 0 #4e6c0e}.shop-items{display:grid;gap:13px;margin-top:25px}.shop-item{border:1px solid #d2dcbf;border-radius:12px;padding:18px;background:white}.item-top{display:flex;justify-content:space-between;gap:10px;align-items:baseline}.item-top h3{font-size:17px}.item-top>strong{font-family:'Space Grotesk',sans-serif;font-size:23px}.price-partition{display:flex;height:32px;gap:4px;margin:12px 0}.price-partition i{flex:1;min-width:0;background:#d6e7bc;border:1px solid #aabd8b;display:grid;place-items:center;font-style:normal;font-size:12px;overflow:hidden}.price-partition .discount-part{background:repeating-linear-gradient(135deg,#fff 0 4px,#e3e7dc 4px 8px);text-decoration:line-through;border-style:dashed;color:#596550}.item-cost{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:12px;font-size:14px}.item-cost>span{color:var(--muted)}.item-cost>strong{color:#3c6118}.item-actions{display:flex;align-items:center;gap:12px;margin-top:16px}.item-actions .btn{font-size:13px;min-height:39px;padding:7px 12px;border-color:#b9c99a}.remove-coupon{font-size:12px;color:var(--muted);background:none;border:0;padding:8px}.calibration{background:white;border:1px solid #dbc0d1;border-radius:11px;padding:17px}.calibration>div{display:flex;gap:16px;flex-wrap:wrap;margin-top:9px;font-size:15px}.machine-route{display:flex;align-items:center;gap:9px;padding:20px 15px;background:#edd9e6;border:1px solid #d5acc5;border-radius:14px}.route-cell{flex:1;min-width:0}.route-number{font-size:11px;letter-spacing:1px;color:#71385a;display:block;margin-bottom:8px;font-weight:700}.installed-part,.empty-part{border:2px solid #9f5582;border-radius:10px;min-height:84px;width:100%;padding:12px;background:white;display:flex;flex-direction:column;align-items:center;justify-content:center}.installed-part>strong{font-size:17px}.installed-part>span{font-size:12px;color:var(--muted);margin-top:8px}.empty-part{border-style:dashed;background:#f9eff5;font-size:14px;color:#886477}.route-arrow{font-size:25px;color:#8c4870;padding-top:18px}.parts-tray{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}.machine-part{background:white;border:2px solid #d2a9c1;border-radius:10px;padding:15px;display:flex;align-items:center;gap:14px;text-align:left}.machine-part>strong{font-family:'Space Grotesk',sans-serif;font-size:27px;color:#853860;min-width:42px}.machine-part>span{font-size:14px}.machine-part:hover:not(:disabled){border-color:#81395f;box-shadow:0 3px 0 #81395f}.test-results{display:grid;gap:10px;margin-top:22px}.trial{display:flex;align-items:center;justify-content:space-between;gap:10px;background:white;border:1px solid #d7bbc9;border-radius:10px;padding:13px;font-size:12px}.trial>div{display:flex;align-items:center;gap:8px}.trial.passed{border-color:#7faa62;background:#f0fae8}.trial.missed{border-color:#daba81;background:#fff5e7}.charge{font-family:'Space Grotesk',sans-serif;font-size:22px;animation:charge-arrive .3s both;animation-delay:var(--arrival)}@keyframes charge-arrive{from{opacity:0;transform:translateX(-12px)}to{opacity:1;transform:translateX(0)}}.new-tool{max-width:720px;margin:0 auto;background:white;border:1px solid var(--line);border-radius:20px;padding:36px}.new-tool>h2{font-size:28px}.new-tool>p{font-size:17px;line-height:1.7;margin-top:25px}.preflight-maths{padding:28px;border-radius:12px;background:#f1f4f9;display:flex;flex-direction:column;gap:15px;text-align:center}.preflight-maths .names{margin:0;font-size:25px}.preflight-maths .price-partition{margin:8px 0;height:40px}.preflight-maths>span{font-size:15px;color:var(--muted)}.new-tool .btn{width:100%}.game-message{font-size:14px;border:1px solid #bbccd8;border-radius:10px;background:#ffffffbb;padding:14px;margin-top:20px;line-height:1.65}.puzzle-goal-mobile{display:none}.badge-new{background:#d3f36b;border-color:#b5d94b}.walk-replay{background:none;border:0;padding:13px 0;color:var(--blue);font-size:14px;text-align:left}.old-progress{padding:18px;border:1px solid var(--line);border-radius:10px;margin:20px 0;color:var(--muted);font-size:14px}@media(max-width:850px){.puzzle-layout{grid-template-columns:1fr}.puzzle-surface{padding:20px}.puzzle-goal-mobile{display:block;font-size:16px;line-height:1.7;margin-bottom:22px}.puzzle-brief>.goal{display:none}.puzzle-brief{padding-top:0}.puzzle-brief h2{font-size:21px}.puzzle-brief>.eyebrow{display:none}}@media(max-width:480px){.garden-grid{gap:10px}.garden-destination{padding:12px}.garden-title{display:block}.garden-title>span{display:block;margin-top:4px}.garden-meter{height:140px}.garden-readout{display:block;font-size:20px}.garden-readout>span{display:block;font-size:11px}.game-tools{gap:20px}.game-tools>div{display:block}.tool-label{font-size:11px}.game-tools strong{display:block;font-size:23px}.packet{min-width:75px;padding:10px}.packet>span{font-size:11px}.bench-actions .btn.primary{flex:1}.coupon-wallet{gap:6px}.coupon{padding:10px 4px}.coupon strong{font-size:19px}.coupon small{font-size:11px;line-height:1.3}.coupon span{font-size:11px}.shop-item{padding:14px}.item-top h3{font-size:16px}.item-top>strong{font-size:20px}.item-cost{align-items:flex-start}.item-cost>span{max-width:60%;font-size:12px}.item-actions{gap:6px}.item-actions .btn{font-size:12px;padding:7px}.trial{flex-wrap:wrap}.trial-name{width:100%}.new-tool{padding:24px}.preflight-maths{padding:20px 12px}.preflight-maths .names{font-size:21px}.machine-part{padding:12px;gap:8px}.machine-part>strong{font-size:25px;min-width:35px}.machine-part>span{font-size:12px}.installed-part>strong{font-size:15px}.route-arrow{font-size:18px}.machine-route{padding:15px 10px}.installed-part,.empty-part{padding:10px}.installed-part>span{font-size:11px}}

/* One workbench: instruction, choices and outcome stay together. */
.market-shell{max-width:1000px}.market-shell .mission-heading{margin:10px 0 22px}.market-shell .mission-heading h1{font-size:clamp(1.7rem,4vw,2.5rem)}.market-cue{display:flex;align-items:center;justify-content:space-between;gap:24px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px}.market-cue h2{font-size:20px;margin:6px 0}.market-cue p{font-size:16px;margin:5px 0 0;line-height:1.5;color:var(--muted)}.market-cue .tool-label{font-size:12px}.active-coupon{flex:0 0 230px;border:2px dashed #61821d;background:#edfacb;border-radius:12px;text-align:center;padding:15px}.active-coupon strong{display:block;font-size:24px;color:#345018}.active-coupon span{display:block;font-size:14px;line-height:1.4;margin-top:4px}.market-won{background:#e8f5d8;border-color:#8fac65}.market-won .btn{flex-shrink:0}.simple-budget{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 8px;font-size:16px}.simple-budget strong{font-size:22px;margin-left:8px}.budget-status{color:#795016;background:#fff0cf;padding:6px 12px;border-radius:8px;white-space:nowrap}.budget-status.budget-ok{background:#e0efca;color:#345319}.market-items{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:10px}.market-items.single-item{grid-template-columns:minmax(0,540px);justify-content:center;margin-top:24px}.market-item{background:white;border:1px solid #c9d7b4;border-radius:16px;padding:22px}.market-item.has-discount{border:2px solid #739333;padding:21px}.market-item h3{margin:0;font-size:20px}.market-item .item-top>span{white-space:nowrap;font-size:16px}.market-item .item-top strong{font-size:23px}.partition-caption{font-size:14px;color:var(--muted);margin:15px 0 0}.cost-groups{display:grid;grid-template-columns:repeat(var(--groups),minmax(0,1fr));gap:6px;padding-top:30px;margin-bottom:16px}.cost-group{background:#e0efc8;border:1px solid #a4bb7b;border-radius:8px;text-align:center;padding:12px 2px}.cost-group strong{display:block;font-size:24px}.cost-group span{display:block;font-size:13px}.cost-group.saved-group{background:#fff4d8;border:1px dashed #9b7322;transform:translateY(-22px)}.saved-group strong{text-decoration:line-through}.new-price{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0 14px}.new-price>span{font-size:16px;color:var(--muted)}.new-price strong{font-size:26px;color:#355b19}.market-item .btn{justify-content:center;font-size:15px}.market-support{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:20px}.market-support .walk-replay{font-size:15px}.market-item .btn:disabled{opacity:1;background:#f1f5e9;color:#506332;border-color:#c5d2b0}.animate-discount .cost-group{animation:price-divide 1.4s ease both}.animate-discount .saved-group{animation:price-save 2.4s ease both}.animate-discount+.new-price{animation:price-result 2.4s ease both}@keyframes price-divide{0%,25%{transform:translateX(calc((1.5 - var(--group))*6px));border-radius:0}100%{transform:translateX(0);border-radius:8px}}@keyframes price-save{0%,45%{transform:translateY(0);background:#e0efc8}100%{transform:translateY(-22px);background:#fff4d8}}@keyframes price-result{0%,65%{opacity:.3}100%{opacity:1}}
@media(max-width:640px){.market-cue{flex-direction:column;align-items:stretch;padding:18px;gap:16px}.active-coupon{flex-basis:auto;padding:10px}.active-coupon strong{font-size:21px}.active-coupon span{font-size:14px}.market-items{grid-template-columns:1fr}.market-items.single-item{margin-top:16px}.market-item{padding:18px}.market-item.has-discount{padding:17px}.market-cue .btn{justify-content:center}.simple-budget{flex-wrap:wrap;gap:8px 18px;padding:16px 2px}.simple-budget>span{font-size:14px}.simple-budget strong{font-size:20px;margin-left:4px}.budget-status{padding:6px 10px}.market-support{gap:8px 16px}.cost-groups{padding-top:26px}.market-shell .mission-heading{margin:5px 0 16px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* The teaching scene precedes its next action at every screen size. */
.lesson-player{max-width:900px;margin:0 auto;background:white;border:1px solid var(--line);border-radius:22px;overflow:hidden}.lesson-head{text-align:center;padding:26px 36px 20px}.lesson-head h1{font-size:clamp(1.55rem,3.5vw,2rem);margin:0 0 10px;letter-spacing:-.6px}.lesson-head p{font-size:17px;line-height:1.65;margin:0 auto;max-width:600px;color:#42536a}.lesson-head .eyebrow{margin-bottom:12px}.lesson-stage{min-height:300px;background:#e7f4f7;padding:26px 36px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;overflow:hidden}.lesson-player.market .lesson-stage{background:#eff6df}.lesson-player.engine .lesson-stage{background:#f6eaf2}.lesson-whole{width:224px;aspect-ratio:1;background:#234de3;border-radius:10px;display:grid;place-items:center;color:white;font-size:28px}.lesson-quarters{display:grid;width:224px;aspect-ratio:1;grid-template-columns:1fr 1fr;gap:12px}.lesson-quarters button,.lesson-quarters>div{border:0;border-radius:8px;background:#234de3;color:white;display:grid;place-items:center;font-size:16px;padding:10px;text-align:center}.lesson-quarters button:hover{background:#1539b2}.lesson-quarters button:focus-visible{outline:4px solid #162b60;outline-offset:4px}.picked-quarter{width:210px;margin:14px}.lesson-quarters .unchosen{background:#d2dbed;border:2px dashed #879ab8}.lesson-quarters .chosen{font-size:32px;font-weight:700;transform:translate(var(--pick-x),var(--pick-y));box-shadow:0 6px 0 #1134a3}.visual-caption{margin:24px 0 0;font-size:16px;text-align:center;line-height:1.5}.lesson-hundred{width:208px;gap:3px;max-width:100%;margin:0}.lesson-hundred i{background:#fff;border:1px solid #bdcbaa}.lesson-hundred i.lit{background:#3357d4;border-color:#2949b8}.lesson-hundred+.visual-caption{margin-top:16px}.lesson-names{display:flex;justify-content:center;align-items:center;gap:14px;margin-top:12px;font-family:'Space Grotesk',sans-serif;font-size:28px}.lesson-names strong{padding:4px 10px;border-radius:9px;background:#fff;color:#2345bf}.lesson-price{width:100%;max-width:530px;text-align:center}.visual-label{font-size:14px;letter-spacing:1px;font-weight:600;margin:0 0 22px;text-align:center}.visual-label strong{font-size:25px;margin-left:12px;letter-spacing:0}.lesson-price-parts{display:grid;grid-template-columns:repeat(var(--parts),minmax(0,1fr));gap:12px;padding-top:30px}.lesson-price-part{border:2px solid #759137;background:white;border-radius:10px;padding:16px 4px}.lesson-price-part strong{font-size:32px;display:block}.lesson-price-part span{font-size:14px;display:block;margin-top:3px}.lesson-price-part.price-away{transform:translateY(-28px);background:#fff1cd;border-style:dashed;border-color:#9f7c34}.price-away strong{text-decoration:line-through}.lesson-price-result{font-size:23px;line-height:1.5;margin-top:30px}.lesson-price-result strong{color:#355717}.lesson-water-whole{height:104px;max-width:500px;width:100%;background:#157da7;color:white;display:grid;place-items:center;font-size:26px;border-radius:12px}.water-lanes{width:100%;max-width:500px;display:grid;grid-template-columns:1fr 1fr;gap:16px}.water-lane{height:220px;position:relative}.lane-top{position:absolute;top:0;left:0;right:0;text-align:center;font-size:14px;color:#536a76}.share-piece{position:absolute;top:30px;left:0;right:0;height:74px;background:#157da7;color:white;display:grid;place-items:center;border-radius:8px;font-size:23px;z-index:1}.share-piece.share-delivered{transform:translateY(100px);background:#267b51}.share-destination{position:absolute;bottom:0;left:-4px;right:-4px;border:2px dashed #8baca7;border-radius:10px;background:#f4fbf9;padding-top:82px;text-align:center;font-size:15px;font-weight:700;color:#315b4c}.lesson-engine{width:100%;max-width:520px}.lesson-units{display:flex;gap:12px;justify-content:center;padding:40px 0 20px}.lesson-unit{position:relative;width:64px;height:70px;background:#893e70;border-radius:8px;display:grid;place-items:center;color:white;font-size:28px}.lesson-unit.added-unit{background:#e4b9d3;color:#613254;border:2px solid #b684a3}.lesson-unit>span{position:absolute;top:-30px;left:0;right:0;text-align:center;font-size:14px;color:#663c56}.lesson-unit.unit-away{transform:translateY(-34px);background:transparent;border:2px dashed #a58096;color:#88677c;text-decoration:line-through}.lesson-engine-result{font-size:30px;font-family:'Space Grotesk',sans-serif;text-align:center;margin-top:20px}.lesson-engine-result strong{display:block;font-size:32px;color:#7c315f;margin-top:10px}.motion-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 26px;border-bottom:1px solid var(--line);min-height:58px}.motion-controls>span{font-size:13px;color:var(--muted)}.motion-controls>div{display:flex;gap:6px}.motion-controls button{border:0;background:#eff2f7;border-radius:7px;padding:8px 12px;min-height:36px;font-size:14px;color:#34465f;white-space:nowrap}.motion-controls button:disabled{opacity:.45;cursor:default}.motion-controls [hidden]{display:none}.lesson-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 26px}.lesson-footer .btn{text-align:center;justify-content:center;font-size:16px}.lesson-back{background:none;border:0;padding:10px 0;font-size:15px;color:var(--muted)}.lesson-back:disabled{visibility:hidden}.lesson-tap{color:#2144bd;font-size:16px;font-weight:600}.is-playing .motion-split{animation:lesson-split 2s ease both}.is-playing .motion-quarter{animation:quarter-away 2s ease both}.is-playing .motion-light{animation:square-light .4s ease both;animation-delay:var(--delay)}.is-playing .motion-name{animation:name-arrive .8s ease 1s both}.is-playing .motion-price-split{animation:price-split 2s ease both}.is-playing .motion-price-away{animation:lesson-price-away 2.8s ease both}.is-playing .motion-result{animation:result-arrive 3s ease both}.is-playing .motion-water-split{animation:water-split 2s ease both}.is-playing .motion-water-send{animation:water-send 2.5s ease both}.is-playing .motion-unit-in{animation:unit-in 1.8s ease both;animation-delay:var(--delay)}.is-playing .motion-unit-out{animation:unit-out 2.2s ease both;animation-delay:var(--delay)}
@keyframes lesson-split{0%,20%{gap:0}100%{gap:12px}}@keyframes quarter-away{0%,20%{transform:translate(0,0);box-shadow:none}100%{transform:translate(var(--pick-x),var(--pick-y));box-shadow:0 6px 0 #1134a3}}@keyframes square-light{from{background:#fff;border-color:#bdcbaa}to{background:#3357d4;border-color:#2949b8}}@keyframes name-arrive{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes price-split{0%,20%{gap:0}100%{gap:12px}}@keyframes lesson-price-away{0%,45%{transform:translateY(0);background:white}100%{transform:translateY(-28px);background:#fff1cd}}@keyframes result-arrive{0%,65%{opacity:.2;transform:translateY(8px)}100%{opacity:1;transform:translateY(0)}}@keyframes water-split{0%,20%{gap:0}100%{gap:16px}}@keyframes water-send{0%,15%{transform:translateY(0);background:#157da7}100%{transform:translateY(100px);background:#267b51}}@keyframes unit-in{0%{transform:translate(60px,-48px);opacity:0}35%{opacity:1}100%{transform:translate(0,0);opacity:1}}@keyframes unit-out{0%,20%{transform:translateY(0);background:#e4b9d3;color:#613254}100%{transform:translateY(-34px);background:transparent;color:#88677c}}
@media(max-width:600px){.lesson-head{padding:22px 20px 18px}.lesson-head p{font-size:16px}.lesson-stage{padding:25px 22px;min-height:280px}.lesson-player .walk-top{padding:14px 18px}.lesson-player .walk-top>span{max-width:none;font-size:13px}.lesson-player .walk-top .textlink{max-width:120px}.lesson-footer{padding:18px;gap:12px;flex-wrap:wrap}.lesson-footer .btn{width:100%;order:-1;font-size:15px}.lesson-back:disabled{display:none}.lesson-tap{flex:1;text-align:center}.motion-controls{padding:10px 18px;gap:8px;flex-wrap:wrap}.motion-controls>span{font-size:12px}.motion-controls button{padding:8px 10px}.lesson-price-part strong{font-size:27px}.lesson-price-part span{font-size:13px}.lesson-price-result{font-size:19px}.lesson-price-parts{gap:8px}.lesson-units{gap:8px}.lesson-unit{width:45px;height:58px;font-size:24px}.lesson-engine-result{font-size:25px}.lesson-names{font-size:24px;gap:9px}.share-piece{font-size:20px}}
@media(prefers-reduced-motion:reduce){.lesson-stage *, .market-table *{animation:none!important;transition:none!important}}