:root{--paper:#f4efdf;--ink:#254d40;--muted:#6a7563;--accent:#d36b49;--line:#ccd0b8;--panel:#fff8e9;--unit:#1e493d;font-family:'Trebuchet MS',sans-serif;color:var(--ink);background:var(--paper);color-scheme:light}
*{box-sizing:border-box}body{margin:0;min-height:100dvh;background:radial-gradient(ellipse at 80% 5%,#ffeac6,transparent 55%),repeating-linear-gradient(120deg,#51614a04 0 1px,transparent 1px 8px);padding-inline:env(safe-area-inset-left) env(safe-area-inset-right)}body[data-theme=tidal]{--paper:#e8f1ec;--ink:#234d61;--accent:#ce7254;--muted:#52717a;--line:#aecbc9;--panel:#f4fcf3;--unit:#255f70;background:radial-gradient(ellipse at 75% 0%,#c9edf0,transparent 65%),var(--paper)}body[data-theme=star]{--paper:#f0e9e2;--ink:#393f60;--accent:#ba6c43;--muted:#77707b;--line:#c7bbbf;--panel:#fff3e5;--unit:#393e60;background:radial-gradient(ellipse at 60% 0%,#e4d4db,transparent 60%),var(--paper)}[hidden]{display:none!important}button{font:700 13px 'Trebuchet MS',sans-serif;min-height:44px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);cursor:pointer;touch-action:manipulation}button:hover:enabled{filter:brightness(.96)}button:active:enabled{transform:translateY(1px)}button:disabled{opacity:.48;cursor:default}button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button.primary{background:var(--ink);border-color:var(--ink);color:#fff4db;box-shadow:0 4px 0 #14251f;min-height:48px}button.quiet{border:0;background:transparent;text-decoration:underline;text-underline-offset:5px}h1,h2,p{margin:0}h1,h2{font-family:Georgia,serif;font-weight:500;letter-spacing:-.8px}h1{font-size:clamp(38px,5vw,68px);line-height:1.08}h2{font-size:29px;line-height:1.12}.eyebrow{font-size:10px;letter-spacing:1.8px;line-height:1.6;font-weight:800;text-transform:uppercase}header{max-width:1150px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:18px 28px;gap:12px}.brand{border:0;padding:0;background:none;display:flex;align-items:center;gap:10px;text-align:left;min-width:110px}.brand>span{width:44px;height:51px;display:grid;place-items:center;border:2px solid var(--ink);border-radius:9px 9px 20px 20px;font:22px Georgia,serif;background:#e4dfbf}.brand strong{font:500 21px/1 Georgia,serif;letter-spacing:-.5px}header nav{display:flex;gap:7px}main{max-width:1100px;padding:18px 28px 30px;margin:auto}.hero{display:grid;grid-template-columns:1.2fr 1fr;min-height:440px;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:32px}.hero .eyebrow{margin-bottom:18px}.hero h1{margin-bottom:24px}.hero p:not(.eyebrow){max-width:410px;font-size:16px;line-height:1.7;margin-bottom:26px;color:var(--muted)}.hero button{margin:0 9px 10px 0}.hero-illustration{height:350px;position:relative;display:grid;place-items:center;overflow:hidden;border-radius:50% 50% 24px 24px;background:radial-gradient(ellipse at center,#fff4ce 5%,#d7e2ba 67%,#b6c89d)}.orbit{position:absolute;width:390px;height:150px;border:1px solid #8aa47a;border-radius:50%;transform:rotate(-34deg)}.orbit-b{transform:rotate(34deg)}.lantern{position:relative;display:grid;place-items:center;width:140px;height:190px;padding:17px;background:repeating-linear-gradient(90deg,#f0c276 0 18px,#ffe0a0 18px 32px);border:7px solid #bd8950;border-radius:35px 35px 30px 30px;box-shadow:0 18px 15px #334d2825,inset 0 0 22px #fff6b4;transform:rotate(-8deg);animation:sway 5s ease-in-out infinite}.lantern::before{content:'';position:absolute;top:-28px;border:4px solid #6a7050;border-bottom:0;width:47px;height:27px;border-radius:20px 20px 0 0}.lantern::after{content:'';position:absolute;bottom:-48px;height:38px;width:12px;border-inline:4px solid #c07c45;background:#efb775}.lantern span{font:64px Georgia,serif;color:#745429;line-height:1}.lantern small{font:800 9px 'Trebuchet MS';letter-spacing:1.4px;text-align:center;color:#694a26}.petal{position:absolute;display:block;width:37px;height:66px;background:linear-gradient(30deg,#dc7052,#f5af8d);border-radius:80% 15% 70% 15%;box-shadow:3px 5px 8px #33502c20}.p1{left:14%;top:25%;transform:rotate(-22deg)}.p2{right:10%;top:55%;transform:rotate(33deg);background:linear-gradient(30deg,#64966c,#b6cb81)}.p3{left:18%;bottom:13%;transform:rotate(78deg);width:26px;height:42px}.section-title{display:flex;justify-content:space-between;align-items:end;gap:18px;margin:34px 0 24px}.section-title h2{margin-top:8px}.section-title>p{white-space:nowrap;font-size:13px;font-weight:800}.chapter{border:1px solid var(--line);border-radius:18px;margin-bottom:18px;overflow:hidden;background:#fffaed}.chapter-heading{padding:19px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(120deg,#dfe6c8,#edf0d9)}.chapter:nth-child(2) .chapter-heading{background:linear-gradient(120deg,#c9e5e5,#e2eee5);color:#255d6a}.chapter:nth-child(3) .chapter-heading{background:linear-gradient(120deg,#3a415f,#657084);color:#fff0d2}.chapter-heading h3{font:500 28px Georgia,serif;margin:3px 0 6px}.chapter-heading p{font-size:12px;line-height:1.5}.chapter-heading>strong{font-size:11px;white-space:nowrap}.level-list{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding:16px}.level-button{min-height:80px;text-align:left;padding:12px;display:flex;flex-direction:column;gap:6px}.level-button:disabled{opacity:1;background:#ebe9da;color:#7b7e70;border-style:dashed}.level-button strong{font:500 25px Georgia,serif}.level-button span{font-size:11px;line-height:1.25}.promise{font-size:12px;color:var(--muted);text-align:center;margin:22px auto;line-height:1.7}.play-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}.play-title h1{font-size:32px;margin-top:4px}#cabinet{background:var(--unit);border:1px solid #ffffff36;border-radius:24px;padding:20px;color:#fff3d9;box-shadow:0 9px 0 #172d2a33,0 25px 50px #30453416;position:relative}.cabinet-top{display:flex;justify-content:space-between;gap:12px;padding:2px 4px 16px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#f4dbae}.cabinet-top b{margin:0 8px;font-weight:400}.cabinet-body{display:grid;grid-template-columns:minmax(0,1fr) 225px;align-items:center;gap:22px}.board-side{min-width:0}#board-wrap{position:relative;width:100%;aspect-ratio:1;max-width:620px;margin:auto}canvas{display:block;width:100%;height:100%;border-radius:15px}#grid{position:absolute;inset:3.333333%;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-template-rows:repeat(6,minmax(0,1fr));touch-action:none}#grid button{background:transparent;border:0;box-shadow:none;border-radius:15px;padding:0;min-width:0;min-height:0;touch-action:none;transform:none}#grid button:focus-visible{outline:3px solid #fff9bd;outline-offset:-5px;background:#ffffff12}#grid button:disabled{opacity:1}#feedback{font-size:13px;font-weight:700;min-height:36px;text-align:center;line-height:1.5;padding:7px 4px 0}aside{display:grid;gap:15px}.moves{display:flex;align-items:center;gap:13px;border-bottom:1px solid #d2d9ae50;padding-bottom:17px}.moves strong{font:56px/1 Georgia,serif;color:#ffe2a1}.moves span{font-size:11px;letter-spacing:1.2px;font-weight:800;max-width:55px;line-height:1.6}.goal-title{font-size:26px;line-height:1.15;letter-spacing:-.3px}#goals{display:grid;gap:10px}.goal{display:grid;grid-template-columns:34px 1fr auto;gap:7px;align-items:center;font-size:12px;line-height:1.4}.goal .symbol{font:25px Georgia,serif;color:#ffe4a0}.goal strong{font-size:13px;white-space:nowrap;color:#ffe4a0}.goal.done{opacity:.65}.goal.done strong{color:#b4ddb9}#tools{display:grid;grid-template-columns:1fr 1fr;gap:8px}#tools button{background:#fff8e4;color:var(--ink);border-color:#f2e2b7}#lesson{font-size:12px;line-height:1.6;color:#e3e1c4;border-top:1px solid #d2d9ae40;padding-top:12px}.score-line{display:flex;justify-content:space-between;font-size:10px;color:#d4d9be}.cabinet-foot{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 20px;font-size:10px;font-weight:700;color:#d4d6b7;padding-top:13px}footer{text-align:center;font-size:11px;color:var(--muted);padding:8px 20px 24px}footer span{margin:0 10px}#save-warning{display:flex;gap:12px;justify-content:center;align-items:center;padding:8px 20px;background:#ffe5ad;color:#543e26;font-size:12px;line-height:1.5}#save-warning button{flex-shrink:0}dialog{background:var(--panel);color:var(--ink);width:min(460px,calc(100% - 24px));max-height:calc(100dvh - 24px);overflow:auto;border:1px solid var(--line);padding:25px;border-radius:22px;box-shadow:0 25px 100px #10271d90}dialog::backdrop{background:#17362ab3;backdrop-filter:blur(6px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.dialog-top button{font-size:11px}dialog h2{font-size:33px;margin-bottom:16px}#dialog-text{font-size:15px;line-height:1.7}#dialog-text p+p{margin-top:10px}#dialog-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}#dialog-actions button{flex:1 1 auto}.immersive #app{min-height:100dvh}.immersive header{padding-top:max(10px,env(safe-area-inset-top))}.immersive footer{padding-bottom:max(18px,env(safe-area-inset-bottom))}
@keyframes sway{0%,100%{transform:rotate(-7deg) translateY(0)}50%{transform:rotate(-3deg) translateY(-7px)}}
@media(min-width:1050px){#cabinet{aspect-ratio:4/3;display:flex;flex-direction:column;justify-content:center}.cabinet-body{grid-template-columns:minmax(0,1fr) 230px}.cabinet-top{margin-bottom:8px}.cabinet-foot{padding-top:20px}}
@media(max-width:720px){header{padding:12px 14px;gap:8px}.brand>span{display:none}.brand strong{font-size:21px}.brand{min-width:80px}header nav{gap:5px}header nav button{padding:8px;font-size:11px}main{padding:12px 14px 24px}.hero{grid-template-columns:1fr;gap:12px;min-height:0}.hero h1{font-size:47px}.hero>div:first-child{padding:15px 8px 0}.hero-illustration{height:230px;border-radius:18px}.lantern{height:145px;width:115px;border-width:6px}.lantern span{font-size:47px}.lantern small{font-size:8px}.orbit{width:320px}.p1{left:13%;top:20%}.section-title h2{font-size:25px}.section-title .eyebrow{font-size:9px}.section-title>p{font-size:11px}.chapter-heading{padding:15px;gap:10px}.chapter-heading h3{font-size:24px}.level-list{grid-template-columns:repeat(2,1fr);padding:12px}.level-button{min-height:75px}.play-title h1{font-size:25px}.play-title .eyebrow{font-size:9px}.play-title>button{font-size:12px;padding-inline:10px}.play-title{margin-bottom:12px}#cabinet{padding:10px 0 14px;border-radius:17px}.cabinet-top{padding:2px 12px 8px;font-size:8px;letter-spacing:.7px}.cabinet-top b{margin:0 3px}.cabinet-body{display:flex;flex-direction:column;gap:10px;align-items:stretch}.board-side{order:1}.cabinet-body aside{display:contents}.moves{order:0;border:0;display:flex;justify-content:center;align-items:center;gap:8px;padding:0}.moves strong{font-size:33px}.moves span{max-width:none;font-size:9px}.goal-title{display:none}#goals{order:0;display:flex;justify-content:center;flex-wrap:wrap;gap:6px;padding-inline:10px}.goal{grid-template-columns:auto auto auto;gap:4px;font-size:10px;padding:5px 7px;border-radius:8px;background:#ffffff10}.goal .symbol{font-size:19px}.goal strong{font-size:11px}#board-wrap{width:100%}#feedback{font-size:11px;min-height:30px;padding-top:4px}#tools{order:2;grid-template-columns:repeat(4,1fr);padding-inline:10px;gap:7px}#tools button{padding:8px 4px;font-size:12px}.score-line{order:3;padding-inline:13px}#lesson{order:4;padding:10px 13px 0;font-size:11px}.cabinet-foot{font-size:9px;gap:8px;padding-inline:10px}#save-warning{flex-wrap:wrap;padding:8px 10px;gap:6px}}
@media(max-width:360px){header{padding:10px}.brand strong{font-size:19px}header nav button{font-size:10px;padding:7px}.brand{min-width:73px}main{padding:9px 10px 20px}.play-title h1{font-size:23px}.play-title .eyebrow{font-size:8px}.hero h1{font-size:42px}.section-title h2{font-size:23px}.chapter-heading{align-items:start}.chapter-heading h3{font-size:22px}.chapter-heading>strong{font-size:9px}#grid button{border-radius:9px}}
@media(orientation:landscape) and (max-height:530px){header{padding:6px 16px}.brand>span{display:none}.brand strong{font-size:18px}.brand strong br{display:none}main{padding:6px 16px 20px}.play-title{margin-bottom:8px}.play-title h1{font-size:24px}.play-title .eyebrow{font-size:8px}#cabinet{padding:10px 12px;max-width:850px;margin:auto}.cabinet-top{padding-bottom:6px;font-size:8px}.cabinet-body{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:18px;align-items:start}#board-wrap{max-width:288px}.moves{padding:0 0 6px}.moves strong{font-size:30px}.moves span{font-size:9px;max-width:none}.goal-title{display:none}aside{display:grid!important;gap:8px}#goals{display:grid;padding:0;gap:6px}.goal{font-size:10px}.goal .symbol{font-size:18px}.goal strong{font-size:11px}#tools{grid-template-columns:1fr 1fr;padding:0;gap:6px}#tools button{font-size:11px}.score-line{padding:0;font-size:9px}#lesson{font-size:10px;padding:6px 0 0}#feedback{font-size:10px;min-height:23px}.cabinet-foot{display:none}.hero{grid-template-columns:1fr 1fr}.hero-illustration{height:300px}.hero h1{font-size:40px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.chapter-heading{background:linear-gradient(90deg,#e6eccff7 0%,#e6eccfd9 48%,#e6eccf00 80%),url('scene-garden.svg') center/cover}
.chapter:nth-child(2) .chapter-heading{background:linear-gradient(90deg,#dceeedf7 0%,#dceeeddd 48%,#dceeed00 80%),url('scene-tidal.svg') center/cover}
.chapter:nth-child(3) .chapter-heading{background:linear-gradient(90deg,#393f60f7 0%,#393f60d9 48%,#393f6000 80%),url('scene-star.svg') center/cover}
.cabinet-top{min-height:79px;align-items:end;border-radius:11px;margin-bottom:14px;padding:12px;background:url('scene-garden.svg') center/cover;color:#18392f;text-shadow:0 1px #fff7}
.cabinet-top>span{background:#fff0d9df;border-radius:7px;padding:5px 7px}
body[data-theme=tidal] .cabinet-top{background-image:url('scene-tidal.svg')}
body[data-theme=star] .cabinet-top{background-image:url('scene-star.svg')}
@media(min-width:1050px){#board-wrap{max-width:520px}}
@media(max-width:720px){.cabinet-top{min-height:61px;margin:0 10px 9px;font-size:8px;padding:7px}.chapter-heading{background-position:60% center}.cabinet-top>span{padding:4px}}
@media(orientation:landscape) and (max-height:530px){.cabinet-top{min-height:37px;margin:0 0 7px;padding:3px 6px;background-position:center 48%}.cabinet-top>span{padding:3px 5px}#board-wrap{max-width:288px}}
@media(orientation:landscape) and (max-height:430px){
 header{padding:3px 16px}main{padding:0 16px 16px;position:relative}.play-title{position:absolute;top:13px;right:29px;width:280px;z-index:1;align-items:start;color:#fff3d9}.play-title h1{font-size:19px;letter-spacing:-.2px}.play-title .eyebrow{font-size:8px;max-width:180px}.play-title>button{min-height:44px;font-size:10px;padding:7px}.cabinet-top{display:none}#cabinet{padding:6px 12px}.cabinet-body{grid-template-columns:minmax(0,1fr) 280px}.cabinet-body aside{padding-top:64px;gap:6px}#lesson{display:none}#feedback{min-height:20px;padding-top:3px;font-size:9px}.moves strong{font-size:28px}#goals{gap:5px}footer{padding-top:12px}
}
@media(orientation:portrait) and (max-height:650px) and (max-width:480px){
 header{padding-block:5px}main{padding-top:3px}.play-title{margin-bottom:7px}.play-title h1{font-size:22px}#cabinet{padding-top:6px}.cabinet-top{min-height:31px;margin-bottom:6px;padding:3px 5px}.cabinet-top>span{font-size:7px;padding:3px}.cabinet-body{display:grid;grid-template-columns:64px minmax(0,1fr);gap:6px 0}.cabinet-body aside{display:contents}.moves{grid-column:1;grid-row:1;display:flex;flex-direction:column;gap:0;padding:0}.moves strong{font-size:25px}.moves span{font-size:7px}#goals{grid-column:2;grid-row:1;padding:0 6px 0 0;gap:4px}.goal{font-size:9px;padding:4px}.goal strong{font-size:10px}.goal .symbol{font-size:15px}.board-side,#tools,.score-line,#lesson{grid-column:1/-1}#feedback{min-height:22px;font-size:10px;padding-top:2px}#tools{gap:5px;padding-inline:7px}#tools button{font-size:11px}.score-line{font-size:9px}#lesson{margin-top:2px}
}
@media(orientation:landscape) and (min-width:721px) and (min-height:531px) and (max-height:850px){#board-wrap{max-width:410px}}