:root{--ink:#14353b;--teal:#126b62;--paper:#f8f5ec;--orange:#ef733e;--gold:#f6d46c;--mint:#d9eee1}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px Arial,Helvetica,sans-serif}button,a,input,select{font:inherit}button{cursor:pointer;min-height:48px;border:1px solid #c2cfc3;border-radius:12px;padding:12px 18px;color:var(--ink);background:#fffdf7;font-weight:700;box-shadow:0 3px 0 #14353b16}button:hover{background:var(--mint)}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #dc652e;outline-offset:4px}header{max-width:1300px;margin:auto;padding:24px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink);font-size:19px;font-weight:900}.brand small{display:block;font-size:10px;letter-spacing:2px;margin-top:5px;color:var(--teal)}nav{display:flex;gap:8px}nav button{background:transparent;box-shadow:none;border-color:transparent}nav button[aria-current]{background:var(--mint);border-color:#b3cbb8}main{max-width:1300px;margin:auto;padding:8px 32px 32px}.intro{display:flex;justify-content:space-between;align-items:end;margin:15px 0 24px;gap:20px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:800;color:var(--teal)}h1{font-size:clamp(28px,4vw,44px);letter-spacing:-1.5px;margin:8px 0}p{line-height:1.6}.intro p{margin:0;color:#506a65}.pill{border:1px solid #d0d9c9;border-radius:30px;padding:12px 18px;white-space:nowrap;background:#fffdf7;font-weight:bold}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.world{position:relative;aspect-ratio:1000/660;overflow:hidden;border-radius:22px;background:#cbdcc0;border:6px solid #fffdf7;box-shadow:0 0 0 1px #dbe1d6}.terrain{position:absolute;width:100%;height:100%}.node{position:absolute;transform:translate(-50%,-50%);width:12%;padding:0;border:0;background:transparent;box-shadow:none;min-height:48px;isolation:isolate}.node:hover{background:transparent;filter:brightness(1.04)}.node svg{width:100%;display:block;filter:drop-shadow(0 5px 0 #14353b15)}.node .badge{display:inline-grid;place-items:center;width:30px;height:30px;background:var(--paper);border:2px solid var(--ink);border-radius:50%;font-size:13px;position:absolute;bottom:4%;left:39%}.node.current .badge{background:var(--orange)}.node.done .badge{background:var(--gold)}.node.locked{opacity:.65}.node span.label{position:absolute;left:50%;bottom:-20px;transform:translateX(-50%);white-space:nowrap;background:#fffdf7ed;border-radius:12px;padding:4px 9px;font-size:11px}.map-hero{position:absolute;width:9%;left:5%;top:71%;pointer-events:none;transition:left .5s,top .5s}.treasure{position:absolute;padding:0;min-height:44px;width:44px;background:transparent;border:0;box-shadow:none;color:#735421;font-size:29px;transform:translate(-50%,-50%)}.treasure:hover{background:#fff5c480}.side{display:flex;flex-direction:column;gap:16px}.card{border:1px solid #dbe1d6;background:#fffdf7;border-radius:20px;padding:24px}.quest-card{background:var(--ink);color:var(--paper)}.quest-card .eyebrow{color:#a7d2bc}.quest-card h2{font-size:25px;line-height:1.15;margin:12px 0}.quest-card p{font-size:14px;color:#cbded5}.quest-art{height:110px;display:flex;justify-content:center;gap:14px;background:#ffffff09;border-radius:14px;padding:8px}.quest-art svg{height:100%;width:100px}.primary{background:var(--orange);border-color:var(--orange);width:100%;margin-top:16px}.primary:hover{background:#f3946a}.bar{height:8px;border-radius:12px;background:#dce7d8;overflow:hidden}.bar i{display:block;height:100%;background:var(--teal)}.quest-card .bar i{background:var(--gold)}.small{font-size:13px;color:#506a65}.legend{display:flex;gap:16px;margin:18px 0;font-size:12px;flex-wrap:wrap}.legend span{display:flex;gap:7px;align-items:center}.dot{width:10px;height:10px;border-radius:50%;background:var(--orange)}.dot.gold{background:var(--gold)}.dot.green{background:var(--teal)}.bottom{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}.island{padding:18px;border:1px solid #dbe1d6;border-radius:16px;background:#fffdf7}.island strong{display:block;margin:8px 0}.island small{color:#506a65}.island.active{border:2px solid var(--teal)}.number{font-size:24px;font-weight:800;color:var(--teal)}dialog{width:min(780px,95vw);max-height:92dvh;border:0;border-radius:24px;background:var(--paper);color:var(--ink);padding:24px}dialog::backdrop{background:#102b31aa}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.dialog-head h2{margin:0;font-size:24px}.stage{background:#dceadd;border-radius:16px;text-align:center;padding:18px;margin:16px 0;min-height:160px}.stage svg{height:110px;max-width:100%}.equation{font-size:clamp(36px,7vw,56px);font-weight:800;text-align:center;margin:24px 0}.answers{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.answers button{font-size:28px;min-height:70px;border-width:2px}.tools{display:flex;justify-content:space-between;gap:12px;margin-top:20px;flex-wrap:wrap}.feedback{min-height:36px;text-align:center;font-weight:bold;padding:12px}.help{padding:16px;background:#fbe fcd;background:#fbefcd;border-radius:12px;margin:16px 0;line-height:1.7}.tokens{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-top:12px}.token{display:inline-block;width:16px;height:16px;border-radius:50%;background:var(--teal)}.token.removed{background:transparent;border:2px dashed var(--ink)}.trail{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;max-width:380px;margin:auto}.trail button{aspect-ratio:1;padding:4px;font-size:22px}.trail .rock{background:#bdc5b7}.trail .walker{background:var(--gold)}.hero-display{max-width:220px;margin:auto}.swatches{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.swatches button[aria-pressed=true]{outline:3px solid var(--teal);outline-offset:3px}label{display:block;margin:18px 0 8px}select,input{min-height:48px;max-width:100%;padding:10px;border:1px solid #80998c;border-radius:8px;background:white;color:var(--ink)}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;border-bottom:1px solid #dbe1d6;padding:12px 6px}#status{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--paper);border-radius:12px;padding:12px 20px;max-width:90%;z-index:5}#status:empty{display:none}.footer{text-align:center;font-size:12px;margin-top:24px;color:#526b64}.reduce *{transition:none!important;animation:none!important}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}@media(max-width:900px){.layout{grid-template-columns:1fr}.side{display:grid;grid-template-columns:1.3fr 1fr}.quest-card{grid-row:span 2}.intro{align-items:start}.world{min-height:380px}.node{width:13%}}@media(max-width:600px){header{padding:16px;flex-wrap:wrap}nav{width:100%;justify-content:space-between}nav button{padding:8px 12px}.brand{font-size:17px}main{padding:0 12px 24px}.intro{margin-top:8px;flex-wrap:wrap;gap:12px}h1{font-size:32px}.intro p{font-size:14px}.pill{padding:8px 12px;font-size:13px}.world{min-height:350px;border-width:3px}.node{width:16%}.node span.label{font-size:9px;bottom:-18px;padding:3px 5px}.node .badge{width:25px;height:25px;font-size:11px}.side{display:flex}.card{padding:20px}.quest-art{float:right;width:110px;height:100px}.quest-art svg:first-child{display:none}.bottom{gap:8px}.island{padding:12px 8px}.island strong{font-size:13px}.island small{font-size:11px}.answers{grid-template-columns:repeat(2,1fr)}dialog{padding:18px}.legend{gap:12px}.treasure{width:44px;font-size:24px}}
#player-hud{display:flex;gap:12px;align-items:center;flex-wrap:wrap}#points{padding:12px;background:var(--gold);border-radius:12px;white-space:nowrap}.bottom{grid-template-columns:repeat(4,1fr)}.memory{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.memory button{height:90px;font-size:32px}.memory svg{width:48px;height:48px}.profile-list{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}#live-points{font-size:14px;white-space:nowrap}canvas{width:100%;height:auto;border-radius:16px;border:2px solid var(--teal);touch-action:manipulation;display:block}#easy-step{margin-top:16px;font-size:14px}.dialog-head{flex-wrap:wrap}header{flex-wrap:wrap}.node span.label{font-size:10px}body{font-size:1rem}button{font-size:1rem}@media(max-width:600px){.bottom{grid-template-columns:repeat(2,1fr)}#player-hud{width:100%;justify-content:space-between}.memory{gap:8px}.memory button{height:70px}.node span.label{font-size:9px}.node .badge{left:35%}.node{width:14%}}
button,#catcher-track{touch-action:manipulation}.game-controls{display:flex;justify-content:center;align-items:center;gap:24px;margin-top:16px;flex-wrap:wrap}.direction-controls{display:flex;gap:8px}.direction-controls button{min-width:88px;min-height:56px;touch-action:none;user-select:none;-webkit-user-select:none}#catcher-track{position:relative;height:56px;margin:8px 0;border:1px solid #8eaa98;border-radius:16px;background:#d9eee1;cursor:pointer;touch-action:none;user-select:none;-webkit-user-select:none}.track-line{position:absolute;left:4%;right:4%;top:26px;height:4px;border-radius:4px;background:#126b62}.track-knob{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:40px;height:40px;border-radius:12px;background:#ef733e;text-align:center;line-height:40px;font-size:24px;font-weight:bold;pointer-events:none}#catcher-track:focus-visible{outline:3px solid #dc652e;outline-offset:4px}
.flight-layout{display:grid;grid-template-columns:56px minmax(0,1fr);gap:12px;align-items:stretch}#glider-track{position:relative;border:1px solid #8eaa98;border-radius:16px;background:#d9eee1;cursor:pointer;touch-action:none;user-select:none;-webkit-user-select:none}#glider-track .track-line{left:26px;top:6.667%;bottom:8.333%;width:4px;height:auto;right:auto}#glider-track .track-knob{left:50%;top:50%;transform:translate(-50%,-50%);width:44px;height:44px;line-height:44px}#glider-track:focus-visible{outline:3px solid #dc652e;outline-offset:4px}@media(max-width:600px){.flight-layout{grid-template-columns:48px minmax(0,1fr);gap:8px}#glider-track .track-line{left:22px}#glider-track .track-knob{width:40px;height:40px;line-height:40px}}
.number-models{display:flex;gap:12px;align-items:flex-start;justify-content:center;margin:16px 0 24px;flex-wrap:wrap}.number-model{background:#fffdf7;border:1px solid #b9cdbd;border-radius:14px;padding:12px;width:calc(50% - 6px);max-width:220px;text-align:center}.number-model>span{display:block;font-size:14px}.number-model>strong{display:block;font-size:26px;margin:6px 0}.number-model svg{display:block;width:100%;height:auto;max-height:150px}.number-model small{display:block;font-size:12px;line-height:1.4;margin-top:8px}@media(max-width:400px){.number-model{padding:8px}.number-model>span{font-size:12px}}

.chapter-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.chapter-nav button{min-width:64px;padding:10px}.chapter-nav button[aria-pressed=true]{background:var(--mint);border:2px solid var(--teal)}#challenge-pick{width:100%;margin-bottom:8px}.story-question{padding:16px;background:var(--mint);border-radius:12px;font-size:1.15rem;line-height:1.6}.equation{overflow-wrap:anywhere}.number-models{align-items:stretch}
.chore-connection{margin-bottom:24px}.chore-connection p{overflow-wrap:anywhere}#chore-code-form{display:flex;flex-direction:column;gap:12px;margin-top:20px}#chore-code{font-size:22px;letter-spacing:2px;text-transform:uppercase}#disconnect-chore{margin-left:12px}