:root{--ink:#183629;--green:#285f42;--lime:#d8f38c;--bg:#f6f8f3;--paper:#fff;--line:#dce5d9;--muted:#647367;--gold:#a96a10;--red:#a53728;--soft:#edf4e8;--radius:20px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-size:16px;line-height:1.55}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.65}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid 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p{font-size:14px;color:#c5d5c8;max-width:420px;margin-top:12px}.hero-progress{display:flex;justify-content:space-between;font-size:12px;margin:22px 0 8px}.progress{height:7px;border-radius:12px;background:#dfe7db;overflow:hidden}.progress>span{display:block;height:100%;background:var(--green);border-radius:12px}.journey-hero .progress{background:#42604d}.journey-hero .progress>span{background:var(--lime)}.mission{padding:23px;background:#fff;border:1px solid var(--line);border-radius:17px;margin-top:16px;display:flex;gap:17px;align-items:center}.mission-badge{width:46px;height:46px;flex:0 0 46px;border-radius:13px;background:var(--lime);display:grid;place-items:center;font-size:25px}.mission-text{flex:1}.mission .eyebrow{font-size:10px;color:var(--green);margin-bottom:5px}.mission p{margin-top:4px;font-size:13px}.primary,.secondary,.lime-button{border-radius:10px;padding:11px 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span{font-size:12px;color:var(--muted)}.results .button-row{justify-content:center}.unlock-banner{background:var(--ink);color:#fff;border-radius:13px;padding:18px;margin:20px 0;font-size:15px}.unlock-banner strong{color:var(--lime)}.review-list{text-align:left;margin-top:27px}.review-list details{border-top:1px solid var(--line);padding:15px 0}.review-list summary{cursor:pointer;font-size:14px;font-weight:650;line-height:1.6}.review-list p{font-size:14px;margin-top:9px}.game-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:24px}.play-card{background:white;border:1px solid var(--line);border-radius:18px;padding:24px;display:flex;flex-direction:column;align-items:start}.play-icon{background:var(--lime);width:50px;height:50px;display:grid;place-items:center;font-size:28px;border-radius:13px;margin-bottom:22px}.play-card h2{font-size:23px}.play-card p{font-size:14px;color:var(--muted);margin:12px 0 22px}.play-card .primary{margin-top:auto}.select-label{display:block;font-size:14px;margin-top:25px}.select-label select{margin-left:10px;padding:8px;border:1px solid var(--line);border-radius:8px;max-width:100%;background:white;color:var(--ink)}.library-search{width:100%;border:1px solid var(--line);border-radius:11px;padding:13px 16px;background:#fff;margin-bottom:23px}.library-module{background:white;border:1px solid var(--line);border-radius:15px;margin-bottom:15px}.library-module>summary{cursor:pointer;padding:18px;font-weight:700;display:flex;justify-content:space-between;gap:12px;font-size:17px}.library-module>summary span{font-size:13px;color:var(--muted);font-weight:400}.library-lessons{padding:0 18px 16px}.library-lesson{padding:14px 0;border-top:1px solid var(--line);display:flex;gap:15px;justify-content:space-between;align-items:center}.library-lesson h3{font-size:15px}.library-lesson p{font-size:12px;color:var(--muted);margin-top:5px}.resume-banner{padding:15px 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24px;color:var(--muted)}.skip-link{position:fixed;top:-100px;left:15px;padding:10px;background:var(--lime);z-index:50}.skip-link:focus{top:15px}.noscript{padding:30px}.celebrate .medal{animation:pop .5s ease both}@keyframes pop{0%{transform:scale(.5) rotate(-15deg)}70%{transform:scale(1.08)}100%{transform:scale(1)}}
@media(min-width:1550px){.topbar{padding-left:max(32px,calc((100vw - 1536px)/2));padding-right:max(32px,calc((100vw - 1536px)/2))}}
@media(max-width:1200px){.app-layout{grid-template-columns:225px minmax(0,1fr)}#main{padding:28px 24px}.overview,.lesson-layout{grid-template-columns:minmax(0,1fr) 230px;gap:16px}.topbar{padding:0 22px;gap:15px}.topnav button{padding:9px 10px}.header-stats{gap:12px}.header-stats .streak-stat{display:none}.mission{flex-wrap:wrap}.mission .primary{margin-left:63px}.side-card{padding:18px}.game-grid{grid-template-columns:1fr 1fr}}
@media(max-width:1000px){.overview,.lesson-layout{grid-template-columns:1fr}.right-side{display:grid;grid-template-columns:1fr 1fr;gap:16px}.right-side .side-card{margin-bottom:0}.right-side .side-card:last-child:nth-child(odd){grid-column:1/-1}.topnav{gap:1px}.brand{font-size:20px}.brand small{font-size:8px}.header-stats{display:none}.hero-heading .big-number{font-size:67px}.mission{flex-wrap:nowrap}.mission .primary{margin-left:0}.game-grid{grid-template-columns:1fr}}
@media(max-width:760px){.topbar{height:auto;min-height:85px;flex-wrap:wrap;padding:17px 18px 10px;gap:14px}.brand small{font-size:8px}.brand-icon{width:35px;height:38px;font-size:28px}.topnav{width:100%;justify-content:space-between}.topnav button{font-size:13px;padding:8px 10px}.app-layout{display:block}.rail{min-height:0;border-right:0;border-bottom:1px solid var(--line);padding:13px 18px}.rail-heading{padding:0}.mobile-toggle{display:inline-block}.rail #module-nav,.rail .rail-footer{display:none}.rail.open #module-nav{display:grid;grid-template-columns:1fr 1fr;margin-top:15px}.rail.open .rail-footer{display:block;margin-top:15px}.module-link{padding:8px 6px;font-size:12px}.module-link:after{display:none}.module-label small{display:none}.module-number{width:27px;height:27px;flex-basis:27px}.module-link .lock{display:none}#main{padding:24px 17px 35px}.page-head{margin-bottom:22px;align-items:start}.page-head p{font-size:14px}.level-pill{font-size:11px;padding:6px 10px}.journey-hero{padding:23px}.journey-hero h2{font-size:26px}.hero-heading .big-number{font-size:59px}.mission{padding:17px;gap:12px;flex-wrap:wrap}.mission .primary{width:100%;margin:5px 0 0}.lesson-node{width:38px;height:38px;flex-basis:38px}.lesson-path:before{left:24px}.lesson-row{gap:11px}.lesson-card{padding:14px 12px;gap:10px;flex-wrap:wrap}.lesson-card h3{font-size:15px}.lesson-info{min-width:150px!important}.lesson-card p{font-size:12px}.lesson-card .primary,.lesson-card .secondary{font-size:12px;min-height:35px;padding:7px 11px}.module-bridge{margin-left:50px}.path-heading{gap:10px}.path-heading span{text-align:right}.right-side{grid-template-columns:1fr 1fr}.content-card,.game-card-body{padding:21px}.lesson-layout>.right-side{grid-template-columns:1fr}.question{font-size:23px}.answers{grid-template-columns:1fr}.game-card-header{padding:15px 20px;font-size:12px}.round-footer{flex-wrap:wrap}.result-stats{gap:8px}.result-stats strong{font-size:24px}.result-stats>div{padding:13px 7px}.results h1{font-size:29px}.library-module>summary{font-size:15px}.library-module>summary span{font-size:11px}.library-lesson{flex-wrap:wrap}.page-footer{display:block}.page-footer span{display:block;margin-top:6px}.select-label select{display:block;margin:7px 0 0}.game-topline{gap:10px}.timer{font-size:16px;padding:8px 10px}.input-row{flex-wrap:wrap}.number-input{flex-basis:75%}}
@media(max-width:390px){.right-side{grid-template-columns:1fr}.level-pill{display:none}.hero-heading .big-number{font-size:48px}.lesson-card p{font-size:12px}.module-label{font-size:11px}.module-link{gap:7px}.topnav button{font-size:12px;padding:8px}.result-stats span{font-size:11px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}