@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&family=Nunito:wght@600;700;800;900&display=swap');
:root{--blue:#175ddd;--ink:#172b50;--muted:#576884;--bg:#f5f8ff;--line:#e1e9f6;--yellow:#ffdc65;--pink:#ffe5ee;--mint:#dff4ea;--radius:26px}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.6 'Be Vietnam Pro',sans-serif}button,input,select{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;min-height:46px}a{color:var(--blue)}button{border:0;background:none}button:disabled{cursor:default;opacity:.5}button,a,input,select{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #b25800}button{transition:transform .18s,background .18s}button:hover:not(:disabled){transform:translateY(-2px)}button:active:not(:disabled){transform:translateY(1px)}h1,h2,h3,.brand,.big-number{font-family:'Nunito','Be Vietnam Pro',sans-serif;line-height:1.18}h1{font-size:clamp(30px,3.5vw,45px);letter-spacing:-1px;margin:0 0 14px;font-weight:900}h2{font-size:28px;margin:0 0 12px;font-weight:900}h3{font-size:21px;margin:0 0 8px}p{margin:0 0 16px}svg.icon{width:24px;height:24px;vertical-align:middle;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.skip{position:fixed;top:-100px;z-index:100;background:white;padding:16px}.skip:focus{top:0}.sidebar{position:fixed;inset:0 auto 0 0;width:238px;background:white;border-right:1px solid var(--line);padding:34px 24px;display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:24px;color:var(--ink);font-weight:900}.brand em{font-style:normal;color:var(--blue)}.brandmark{width:44px;height:44px;background:var(--blue);color:white;border-radius:15px;display:grid;place-items:center;font-size:34px;font-weight:900;box-shadow:0 4px 0 #c7dafd}.brand small{display:block;font-size:11px;letter-spacing:2px;margin-top:5px;font-family:'Be Vietnam Pro',sans-serif}.nav{display:flex;flex-direction:column;gap:9px;margin-top:49px}.nav button{display:flex;align-items:center;gap:14px;text-align:left;padding:14px 16px;border-radius:14px;color:var(--muted);font-size:15px;font-weight:600}.nav button.active{background:#eaf1ff;color:var(--blue)}.nav button:hover{background:#f0f5ff}.side-note{margin-top:auto;padding:18px 16px;background:#fff8df;border-radius:18px;font-size:13px}.side-note strong{display:block;font-family:Nunito,sans-serif;font-size:18px;margin:6px 0}.signature{font-size:11px;line-height:1.8;color:var(--muted);margin-top:22px}.app-shell{margin-left:238px;min-height:100vh}.topbar{height:86px;padding:0 42px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);background:#ffffffc9;gap:16px}.breadcrumb{font-size:14px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:12px}.age-control{display:flex;background:#edf2fb;padding:5px;border-radius:30px;gap:3px}.age-control button{padding:5px 13px;min-height:34px;border-radius:22px;font-size:13px;font-weight:700;white-space:nowrap}.age-control button.selected{background:white;color:var(--blue);box-shadow:0 2px 6px #233d6610}.round{width:44px;height:44px;min-height:44px;border:1px solid var(--line);border-radius:50%;display:inline-grid;place-items:center;background:white}.main{max-width:1420px;margin:auto;padding:30px 42px 44px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:2px;color:var(--blue);display:block;margin-bottom:10px}.heading-row{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.heading-row p{color:var(--muted);font-size:14px;margin:0}.pill{display:inline-flex;align-items:center;gap:7px;border-radius:30px;padding:7px 12px;font-size:12px;font-weight:700;background:white;border:1px solid var(--line)}.welcome-grid{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:22px}.welcome{background:#e7f0ff;min-height:280px;border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:1fr 47%;position:relative}.welcome-copy{padding:29px 0 29px 29px;z-index:1}.welcome h2{font-size:32px;line-height:1.24;margin:13px 0 10px}.welcome p{font-size:14px;color:#405d83;max-width:300px}.welcome-photo{width:100%;height:100%;object-fit:cover;object-position:50% 42%;min-height:290px;mask-image:linear-gradient(90deg,transparent,black 22%)}.primary,.secondary,.yellow-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;padding:13px 21px;min-height:48px;font-size:14px;font-weight:700;text-decoration:none}.primary{background:var(--blue);color:white;box-shadow:0 4px 0 #104aba}.secondary{background:white;border:1px solid var(--line)}.yellow-btn{background:var(--yellow);color:var(--ink)}.day-card{background:var(--yellow);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between}.day-card .eyebrow{color:#755b14}.day-card h3{font-size:25px}.day-card p{font-size:13px}.day-number{font:900 50px Nunito;line-height:1.1;color:#8a5f0b}.section-head{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:29px 0 17px}.section-head h2{font-size:24px;margin:0}.text-btn{font-size:13px;color:var(--blue);font-weight:700;padding:5px;min-height:40px}.activities{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.activity-card{border:1px solid var(--line);border-radius:21px;background:white;text-align:left;padding:20px;min-height:210px;position:relative;overflow:hidden;box-shadow:0 4px 0 #e9eff9;display:flex;flex-direction:column;align-items:flex-start}.activity-card .art-symbol{width:68px;height:68px;border-radius:21px;display:grid;place-items:center;font:900 33px Nunito;margin-bottom:20px;letter-spacing:-3px;background:var(--tint);color:var(--accent)}.activity-card h3{font-size:21px}.activity-card p{font-size:12px;color:var(--muted);margin:0;line-height:1.6}.activity-card .arrow{position:absolute;right:16px;bottom:16px;color:var(--accent)}.bottom-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:22px;margin-top:27px}.journey,.family-card{background:white;border:1px solid var(--line);border-radius:22px;padding:23px}.journey h3,.family-card h3{font-size:21px}.steps{display:flex;align-items:center;gap:10px;margin-top:20px}.step-dot{height:44px;width:44px;border-radius:50%;background:#eef3fc;display:grid;place-items:center;color:#73829a;font-weight:700}.step-dot.done{background:var(--blue);color:white}.step-line{height:2px;background:#e7edf7;flex:1}.subtle{color:var(--muted);font-size:13px}.family-card{background:#e9f6ee;display:flex;align-items:center;gap:22px}.family-card .family-icon{padding:20px;background:white;border-radius:20px;color:#22704d}.footer{font-size:12px;color:var(--muted);margin-top:28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.mobile-logo{display:none}.page-intro{max-width:730px;color:var(--muted);margin-bottom:22px}.filters{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.chip{border:1px solid var(--line);background:white;padding:8px 17px;border-radius:30px;font-size:14px}.chip.selected{background:var(--blue);color:white;border-color:var(--blue)}.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.lesson-card{background:white;border:1px solid var(--line);border-radius:22px;padding:22px;text-align:left;display:flex;gap:20px;align-items:center}.lesson-symbol{font:900 42px Nunito;color:var(--blue);background:#eaf1ff;min-width:74px;height:80px;border-radius:20px;display:grid;place-items:center}.lesson-card h3{font-size:19px}.lesson-card p{font-size:12px;color:var(--muted);margin:0}.done-label{font-size:11px;color:#20754d;display:block;margin-top:7px}.backbar{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:21px}.backbar button{display:flex;align-items:center;gap:8px}.learning-layout{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:24px}.board{background:white;border:1px solid var(--line);border-radius:26px;padding:30px;text-align:center;min-height:440px}.board h2{font-size:28px}.board .instruction{color:var(--muted);font-size:16px}.big-number{font-size:130px;color:var(--blue);line-height:1.2}.objects{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;padding:20px;min-height:100px;align-items:center}.object{width:66px;height:66px;background:var(--yellow);border-radius:50%;border:3px solid #ddb74b;box-shadow:inset 0 -5px #edc23e;font:900 23px Nunito}.object.counted{background:#bfe8d2;border-color:#62ad85;box-shadow:none}.empty-basket{border:3px dashed #b9c9df;min-width:180px;border-radius:20px;padding:20px;color:var(--muted)}.answer-row{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin:24px 0}.answer{min-width:84px;min-height:84px;background:#eaf1ff;border-radius:20px;color:var(--blue);font:900 42px Nunito;border:2px solid #d4e3fd}.feedback{padding:14px;border-radius:15px;min-height:53px;background:#f1f6fe;margin-top:14px;color:#365c92}.feedback.success{background:#e3f5e9;color:#1c6341}.lesson-controls{display:flex;justify-content:space-between;gap:12px;margin-top:24px;flex-wrap:wrap}.host{background:#e9f1ff;border-radius:22px;padding:18px;height:fit-content}.host img{width:100%;height:152px;object-fit:cover;border-radius:15px}.host h3{margin-top:15px}.host p{font-size:13px;color:#4b6182}.host button{width:100%;font-size:13px}.host small{display:block;font-size:11px;color:var(--muted);margin-top:13px}.progress-track{height:7px;border-radius:20px;background:#dce6f8;margin-bottom:23px;overflow:hidden}.progress-track span{display:block;height:100%;background:var(--blue);transition:width .2s}.trace-wrap{position:relative;margin:auto;max-width:600px;width:100%;aspect-ratio:1.65;background:linear-gradient(transparent 49.5%,#ebf0f8 49.5%,#ebf0f8 50%,transparent 50%);border:2px dashed #d5e0f1;border-radius:20px;overflow:hidden}.trace-wrap canvas{width:100%;height:100%;position:absolute;inset:0;touch-action:none}.canvas-toolbar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:15px}.canvas-toolbar button{font-size:13px}.color-stage{width:min(100%,570px);aspect-ratio:1;position:relative;margin:0 auto;background:white;border:1px solid var(--line);border-radius:22px;overflow:hidden}.color-stage img,.color-stage canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.color-stage canvas{touch-action:none}.color-stage img{pointer-events:none;mix-blend-mode:multiply;z-index:2}.palette{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:20px 0}.swatch{width:46px;height:46px;border-radius:50%;border:3px solid white;box-shadow:0 0 0 1px #b9c4d5;background:var(--swatch)}.swatch.selected{box-shadow:0 0 0 3px var(--ink);transform:scale(1.08)}.word-slots{display:flex;gap:12px;justify-content:center;margin:25px 0}.word-slots span{width:80px;height:90px;border-radius:16px;background:#f4f7fc;border:2px dashed #bfcee5;font:900 55px Nunito;display:grid;place-items:center;color:var(--blue)}.parent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:24px}.stat{padding:24px;background:white;border:1px solid var(--line);border-radius:22px}.stat strong{font:900 40px Nunito;color:var(--blue);display:block}.panel{background:white;border:1px solid var(--line);border-radius:24px;padding:26px;margin-bottom:22px}.panel li{margin:10px 0}.panel label{display:block;font-size:14px;margin:18px 0 6px}.panel input,.panel select{padding:12px;border:1px solid #b5c6df;border-radius:12px;max-width:100%;background:white;color:var(--ink)}.settings-row{display:flex;gap:20px;align-items:end;flex-wrap:wrap}.settings-row>div{flex:1;min-width:180px}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.product{padding:26px;background:white;border:1px solid var(--line);border-radius:23px}.product .product-art{background:#edf3ff;border-radius:18px;height:130px;display:grid;place-items:center;font:900 50px Nunito;color:var(--blue);margin-bottom:22px}.product p{font-size:14px;color:var(--muted)}.product small{display:block;margin:15px 0;color:var(--muted)}.product .primary,.product .secondary{width:100%}.parent-tabs{margin-bottom:23px;display:flex;gap:10px;flex-wrap:wrap}.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.gallery figure{margin:0;border:1px solid var(--line);border-radius:20px;padding:14px;background:white}.gallery img{width:100%;border-radius:12px}.gallery figcaption{font-size:13px;color:var(--muted)}.empty-state{padding:50px 25px;text-align:center;background:white;border:1px dashed #b7c9e8;border-radius:24px}.empty-state p{color:var(--muted)}.offline{background:#fff6d9;padding:23px;border-radius:20px;margin-top:20px;text-align:left}.offline h3{font-size:21px}.offline p{font-size:14px}.badge-number{font:900 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#b9c9df;border-radius:10px;margin-bottom:15px}.close{float:right;font-size:28px;width:44px}.close:hover{background:#f1f4fa;border-radius:50%}#gateerror{font-size:13px;color:#a33535}#toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);padding:13px 23px;border-radius:15px;background:#172b50;color:white;z-index:100;max-width:90%;font-size:14px;display:none}#toast.visible{display:block}.printsheet{display:none}.flow-note{font-size:12px;color:var(--muted);margin:16px 0 0}.tag{font-size:11px;border-radius:6px;padding:4px 8px;background:#edf3ff;color:var(--blue);font-weight:700}.low-motion *{animation:none!important;transition:none!important}.two-panels{display:grid;grid-template-columns:1fr 1fr;gap:20px}.paper-num{font:900 90px Nunito;color:#bbc7d7;letter-spacing:22px;line-height:1.8;word-break:break-all}.page-title{margin-bottom:10px}.mood-options{display:flex;gap:15px;flex-wrap:wrap;justify-content:center}.mood-options button{padding:15px;background:#edf4ff;border-radius:15px}.active-host{border:2px solid var(--blue)!important}.host-options{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}.host-options button{border:2px solid var(--line);border-radius:14px;padding:8px 12px;font-size:13px}.numberstrip{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}.numberstrip button{width:47px;border-radius:12px;background:white;border:1px solid var(--line);font-weight:800}.numberstrip button.selected{background:var(--blue);color:white}.save-line{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.content-link{display:inline-block;margin-top:8px}.research-label{font-size:12px;color:var(--muted)}
@media(min-width:1600px){.main{padding-top:40px}.welcome{min-height:320px}.welcome h2{font-size:39px}.activity-card{min-height:225px}}
@media(max-width:1150px){.sidebar{width:200px;padding:30px 16px}.app-shell{margin-left:200px}.topbar{padding:0 25px}.main{padding:25px}.welcome-grid{grid-template-columns:1fr 220px}.welcome-copy{padding:24px 0 24px 23px}.welcome h2{font-size:28px}.activities{gap:12px}.activity-card{padding:17px}.activity-card h3{font-size:18px}.learning-layout{grid-template-columns:minmax(0,1fr) 190px}}
@media(max-width:900px){.welcome-grid{grid-template-columns:1fr}.day-card{display:none}.activities{grid-template-columns:repeat(2,1fr)}.activity-card{min-height:175px}.bottom-grid{grid-template-columns:1fr}.learning-layout{grid-template-columns:1fr}.host{display:grid;grid-template-columns:80px 1fr;gap:12px;align-items:center}.host img{height:80px;grid-row:span 2}.host h3{margin:0}.host p{margin:0}.host button{grid-column:2}.host small{grid-column:1/-1}.lesson-grid,.product-grid{grid-template-columns:repeat(2,1fr)}.two-panels{grid-template-columns:1fr}}
@media(max-width:650px){.sidebar{width:auto;inset:auto 0 0;height:78px;padding:0 6px calc(env(safe-area-inset-bottom,0px) + 3px);border-right:0;border-top:1px solid var(--line);background:#fff;z-index:30}.sidebar>.brand,.side-note,.signature{display:none}.nav{margin:0;flex-direction:row;gap:0;height:100%;justify-content:space-around}.nav button{flex:1;display:flex;flex-direction:column;justify-content:center;gap:3px;padding:8px 2px;font-size:10px;border-radius:0}.nav button.active{background:white;color:var(--blue);border-top:3px solid var(--blue)}.nav button svg{width:23px;height:23px}.app-shell{margin:0;padding-bottom:85px}.topbar{height:auto;min-height:76px;padding:13px 18px;flex-wrap:wrap;gap:12px}.breadcrumb{display:none}.mobile-logo{display:block}.brand{font-size:21px}.brandmark{width:34px;height:36px;font-size:28px;border-radius:12px}.brand small{font-size:8px;letter-spacing:1.7px}.top-actions{gap:7px}.age-control button{font-size:11px;padding:5px 9px}.top-actions .round{width:35px;height:35px;min-height:35px}.main{padding:24px 18px}.heading-row{margin-bottom:19px;gap:8px}.heading-row h1{font-size:30px;letter-spacing:-.8px}.heading-row p{font-size:12px}.heading-row>.pill{display:none}.welcome{grid-template-columns:1fr 43%;min-height:245px;border-radius:22px}.welcome-copy{padding:21px 0 21px 20px}.welcome h2{font-size:25px}.welcome p{font-size:12px;line-height:1.7}.welcome .pill{font-size:10px;padding:5px 8px}.welcome-photo{min-height:245px;object-position:48% center}.primary,.secondary,.yellow-btn{font-size:13px;padding:11px 16px}.welcome .primary{font-size:12px;padding:10px 13px}.activities{gap:13px}.activity-card{padding:18px 15px;min-height:185px}.activity-card .art-symbol{width:57px;height:57px;font-size:30px;margin-bottom:16px;border-radius:17px}.activity-card h3{font-size:20px}.activity-card p{font-size:11px;padding-right:9px}.section-head h2{font-size:23px}.section-head{margin-top:25px}.text-btn{font-size:12px}.family-card{gap:16px;padding:20px}.family-card .family-icon{padding:14px}.footer{font-size:10px;gap:5px}.lesson-grid{grid-template-columns:1fr 1fr;gap:12px}.lesson-card{flex-direction:column;align-items:flex-start;padding:17px;gap:12px}.lesson-symbol{min-width:60px;height:62px;font-size:34px}.lesson-card h3{font-size:17px}.board{padding:23px 15px;min-height:350px}.board h2{font-size:25px}.board .instruction{font-size:14px}.answer{min-width:70px;min-height:70px;font-size:35px}.parent-grid{gap:10px}.stat{padding:15px}.stat strong{font-size:30px}.stat .subtle{font-size:11px}.product-grid{grid-template-columns:1fr}.gallery{grid-template-columns:1fr 1fr}.panel{padding:20px}.parent-tabs .chip{font-size:12px;padding:7px 12px}.eyebrow{font-size:10px}.backbar{font-size:12px}.backbar .pill{font-size:10px;padding:5px 8px}.lesson-controls{justify-content:center}.object{width:55px;height:55px}.objects{gap:12px;padding:15px}.word-slots span{width:68px;height:75px;font-size:43px}.color-stage{border-radius:15px}.canvas-toolbar button{font-size:12px;padding:8px 12px}#toast{bottom:100px}.main h1{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{body{background:white;color:black;font-family:Arial,sans-serif}body>*{display:none!important}body>.printsheet{display:block!important;padding:15mm}.printsheet h1{font-size:26pt}.printsheet h2{font-size:19pt}.printsheet .paper-num{font-size:70pt;color:#a7a7a7;letter-spacing:15pt}.printsheet .print-line{height:60px;border-bottom:1px dashed #aaa}.printsheet footer{font-size:10pt;margin-top:30px}.printsheet .print-shapes{font-size:45pt;letter-spacing:15px}.printsheet img{width:100%;max-height:190mm;object-fit:contain}@page{size:A4;margin:0}}