/* =========================================================
   MathsPlay — kid-friendly animated maths portal
   ========================================================= */
:root{
  --purple:#6c4cf5; --purple-d:#4b2fd1; --purple-l:#efeaff;
  --yellow:#ffcf3f; --yellow-l:#fff6d6;
  --orange:#ff7a45; --orange-l:#ffe9df;
  --green:#1fb96b; --green-l:#dcf8e9;
  --red:#f0445a; --red-l:#ffe2e6;
  --pink:#ff5fa2; --pink-l:#ffe6f1;
  --blue:#2f8cff; --blue-l:#e2f0ff;
  --ink:#27224a; --ink-2:#5b5680; --line:#e4e0f5;
  --bg:#f3f7ff; --card:#ffffff;
  --r:22px; --r-sm:14px;
  --shadow:0 10px 30px rgba(76,55,190,.12);
  --shadow-sm:0 4px 12px rgba(76,55,190,.10);
  --font:'Baloo 2','Nirmala UI','Mangal',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:linear-gradient(180deg,#dff0ff 0%,var(--bg) 320px);min-height:100vh;font-size:19px;line-height:1.5;overflow-x:hidden}
img.emoji{height:1.1em;width:1.1em;margin:0 .05em 0 .1em;vertical-align:-0.15em;display:inline-block}
a{color:var(--purple)}
button{font-family:inherit}
.l-hi{display:none}
body.lang-hi .l-en{display:none!important}
body.lang-hi .l-hi{display:inline}
body.lang-hi div.l-hi,body.lang-hi p.l-hi,body.lang-hi li.l-hi,body.lang-hi h1.l-hi,body.lang-hi h2.l-hi,body.lang-hi h3.l-hi{display:block}
.hidden{display:none!important}
.small{font-size:.85em;color:var(--ink-2)}
.center{text-align:center}

/* ---------- sky / clouds ---------- */
.sky{position:fixed;inset:0 0 auto 0;height:260px;pointer-events:none;z-index:-1;overflow:hidden}
.cloud{position:absolute;background:#fff;border-radius:60px;opacity:.85;width:140px;height:44px;animation:drift 60s linear infinite}
.cloud:before,.cloud:after{content:"";position:absolute;background:#fff;border-radius:50%}
.cloud:before{width:60px;height:60px;top:-28px;left:22px}
.cloud:after{width:44px;height:44px;top:-18px;left:72px}
.c1{top:70px;left:-160px}
.c2{top:150px;left:-160px;transform:scale(.7);animation-duration:85s;animation-delay:-30s}
.c3{top:40px;left:-160px;transform:scale(.55);animation-duration:110s;animation-delay:-70s}
@keyframes drift{from{margin-left:0}to{margin-left:calc(100vw + 320px)}}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 16px;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink)}
.brand-logo svg{display:block;animation:wobble 4s ease-in-out infinite}
@keyframes wobble{0%,100%{transform:rotate(0)}50%{transform:rotate(-10deg)}}
.brand-text{font-size:26px;font-weight:800;letter-spacing:.3px}
.brand-text b{color:var(--purple)}
.top-actions{display:flex;gap:8px;align-items:center}
.pill-btn{border:0;background:var(--purple);color:#fff;font-weight:700;font-size:16px;padding:8px 16px;border-radius:999px;cursor:pointer;box-shadow:0 4px 0 var(--purple-d);transition:transform .1s}
.pill-btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--purple-d)}
.icon-btn{border:0;background:#fff;width:42px;height:42px;border-radius:50%;font-size:20px;cursor:pointer;box-shadow:var(--shadow-sm);display:grid;place-items:center}
.icon-btn.off{opacity:.45;filter:grayscale(1)}

main{max-width:1100px;margin:0 auto;padding:18px 16px 40px}

/* ---------- generic buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:16px;padding:12px 22px;font-size:19px;font-weight:700;cursor:pointer;color:#fff;background:var(--purple);box-shadow:0 5px 0 var(--purple-d);text-decoration:none;transition:transform .1s,box-shadow .1s;min-height:52px;-webkit-tap-highlight-color:transparent}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--purple-d)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.green{background:var(--green);box-shadow:0 5px 0 #138a4e}
.btn.orange{background:var(--orange);box-shadow:0 5px 0 #d4531f}
.btn.pink{background:var(--pink);box-shadow:0 5px 0 #d23b7c}
.btn.blue{background:var(--blue);box-shadow:0 5px 0 #1a64c2}
.btn.ghost{background:#fff;color:var(--purple);box-shadow:0 5px 0 var(--line)}
.btn.small{padding:8px 14px;font-size:16px;min-height:42px;border-radius:12px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:14px 0}

/* ---------- home ---------- */
.hero{position:relative;text-align:center;padding:26px 10px 10px}
.hero h1{font-size:clamp(34px,7vw,58px);line-height:1.1;margin:.2em 0;color:var(--ink)}
.hero h1 .hl{color:var(--purple);display:inline-block}
.hero p{font-size:clamp(18px,3vw,22px);color:var(--ink-2);margin:.3em auto 1em;max-width:640px}
.float-nums{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:-1}
.float-nums span{position:absolute;font-weight:800;font-size:40px;opacity:.18;color:var(--purple)}
.mascots{display:flex;justify-content:center;gap:18px;margin:6px 0 14px;font-size:64px}
.mascots span{display:inline-block}
.feature-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:22px 0}
.feature{background:#fff;border-radius:var(--r);padding:16px;box-shadow:var(--shadow-sm);text-align:center}
.feature .fi{font-size:40px}
.feature h3{margin:.2em 0;font-size:21px}
.feature p{margin:0;color:var(--ink-2);font-size:16px}
.section-title{font-size:28px;margin:26px 0 12px;text-align:center}
.chapter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.chapter-card{position:relative;display:block;background:#fff;border-radius:var(--r);padding:22px;box-shadow:var(--shadow);text-decoration:none;color:var(--ink);overflow:hidden;border:3px solid transparent;transition:transform .2s,border-color .2s}
.chapter-card:hover{transform:translateY(-4px) rotate(-.5deg);border-color:var(--purple)}
.chapter-card .ch-no{display:inline-block;background:var(--orange);color:#fff;border-radius:999px;padding:2px 14px;font-weight:700;font-size:16px}
.chapter-card .ch-icon{position:absolute;right:16px;top:12px;font-size:58px;animation:bob 3s ease-in-out infinite}
.chapter-card h3{font-size:26px;margin:.4em 0 .2em}
.chapter-card p{margin:0 0 12px;color:var(--ink-2);font-size:17px}
.progress-bar{height:14px;background:var(--purple-l);border-radius:99px;overflow:hidden}
.progress-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--green),#7be495);border-radius:99px;transition:width .8s}
.stat-strip{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin:18px 0}
.stat{background:#fff;border-radius:16px;padding:10px 18px;box-shadow:var(--shadow-sm);font-weight:700}
.stat b{color:var(--purple);font-size:24px}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* ---------- chapter header + tabs ---------- */
.ch-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.ch-head h1{font-size:clamp(26px,5vw,38px);margin:0;line-height:1.15}
.ch-head .ch-badge{background:var(--orange);color:#fff;border-radius:14px;padding:4px 14px;font-weight:800}
.tabs{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;border:0;background:#fff;color:var(--ink);border-radius:14px;padding:8px 16px;font-size:17px;font-weight:700;cursor:pointer;box-shadow:var(--shadow-sm);text-decoration:none}
.tab.active{background:var(--purple);color:#fff}

/* ---------- lesson map ---------- */
.map{position:relative;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:6px}
.stop{position:relative;background:#fff;border-radius:var(--r);padding:18px 16px 16px;box-shadow:var(--shadow);cursor:pointer;border:3px solid transparent;transition:transform .2s,border-color .2s;text-align:left;font-size:inherit;color:inherit;width:100%}
.stop:hover{transform:translateY(-4px);border-color:var(--yellow)}
.stop .s-num{position:absolute;top:-12px;left:-8px;width:44px;height:44px;border-radius:50%;background:var(--purple);color:#fff;display:grid;place-items:center;font-weight:800;font-size:22px;box-shadow:0 4px 0 var(--purple-d)}
.stop .s-icon{font-size:48px;line-height:1}
.stop h3{margin:.3em 0 .1em;font-size:22px}
.stop p{margin:0;color:var(--ink-2);font-size:16px}
.stop .s-done{position:absolute;top:10px;right:12px;font-size:28px}
.stop.special{background:linear-gradient(135deg,#fff 0%,var(--yellow-l) 100%)}

/* ---------- lesson player ---------- */
.player{background:#fff;border-radius:28px;box-shadow:var(--shadow);overflow:hidden}
.player-top{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--purple-l)}
.player-top .p-title{font-weight:800;font-size:20px;flex:1;min-width:0}
.dots{display:flex;gap:6px;flex-wrap:wrap}
.dots i{width:14px;height:14px;border-radius:50%;background:#d6cffa;display:block;cursor:pointer;transition:transform .2s,background .2s}
.dots i.on{background:var(--purple);transform:scale(1.25)}
.dots i.done{background:var(--green)}
.step{padding:20px 20px 10px}
.step h2{font-size:clamp(24px,4.5vw,32px);margin:0 0 6px;line-height:1.2;display:flex;align-items:center;gap:10px}
.say-btn{border:0;background:var(--yellow);border-radius:50%;width:44px;height:44px;font-size:22px;cursor:pointer;flex:0 0 auto;box-shadow:0 3px 0 #e2a900}
.say-btn.speaking{animation:pulse 1s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,207,63,.8)}100%{box-shadow:0 0 0 16px rgba(255,207,63,0)}}
.step .txt{font-size:clamp(19px,3.2vw,22px);color:var(--ink)}
.step .txt p{margin:.4em 0}
.tip{background:var(--yellow-l);border-left:6px solid var(--yellow);border-radius:12px;padding:10px 14px;margin:12px 0;font-size:18px}
.tip.green{background:var(--green-l);border-color:var(--green)}
.tip.pink{background:var(--pink-l);border-color:var(--pink)}
.tip.blue{background:var(--blue-l);border-color:var(--blue)}
.widget{margin:14px 0 6px}
.player-nav{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 20px 20px}
.player-nav .count{font-weight:700;color:var(--ink-2)}
.key{display:inline-block;background:var(--purple-l);color:var(--purple-d);border-radius:10px;padding:0 10px;font-weight:800}

/* ---------- stage (animated scene) ---------- */
.stage{position:relative;border-radius:22px;overflow:hidden;background:linear-gradient(180deg,#bfe6ff 0%,#e8f7ff 55%,#9fd97a 55%,#7cc95a 100%);min-height:250px;border:3px solid #fff;box-shadow:var(--shadow-sm)}
.stage .sun{position:absolute;right:20px;top:14px;font-size:44px;animation:spin 20s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.stage .house{position:absolute;left:12px;bottom:32%;font-size:64px}
.stage .gate{position:absolute;left:40%;bottom:26%;width:14px;height:90px;background:#8b5a2b;border-radius:4px}
.stage .gate:after{content:"";position:absolute;left:0;top:0;width:60px;height:12px;background:#a0692f;border-radius:4px;transform-origin:left;transform:rotate(-30deg)}
.stage .field{position:absolute;right:10px;bottom:10%;font-size:34px}
.slate{position:absolute;left:12px;top:12px;min-width:120px;max-width:44%;min-height:70px;background:#2e3d3a;border:6px solid #b07a45;border-radius:10px;padding:8px 10px;box-shadow:0 4px 0 rgba(0,0,0,.15);display:flex;flex-wrap:wrap;gap:6px;align-content:flex-start}
.cow{position:absolute;font-size:40px;bottom:14%;left:30%;will-change:transform;line-height:1}
@media (max-width:640px){.cow{font-size:30px}.stage .house{font-size:48px}}
.scene-caption{text-align:center;font-weight:800;color:var(--purple-d);font-size:21px;min-height:34px;margin-top:8px}

/* ---------- tally marks ---------- */
.tally{display:inline-flex;flex-wrap:wrap;gap:10px 16px;align-items:center}
.tally-group{position:relative;display:inline-flex;gap:5px;height:48px;align-items:center;padding:0 3px}
.tally-group .mk{width:5px;height:44px;background:#2d2146;border-radius:3px;display:block;transform-origin:bottom}
.tally .tally-group .mk.struck{background:#d9d2e6;position:relative;overflow:visible}
.tally .tally-group .mk.struck:after{content:"";position:absolute;left:0;top:8%;width:3px;height:84%;background:var(--red);border-radius:2px;transform:rotate(28deg)}
.tally-group.five:after{content:"";position:absolute;left:-4px;right:-4px;top:50%;height:5px;background:var(--red);border-radius:3px;transform:rotate(-24deg)}
.tally.book .tally-group.five:after{display:none}
.tally.small .tally-group{height:30px;gap:4px}
.tally.small .tally-group .mk{height:28px;width:4px}
.slate .tally-group{height:34px}
.slate .tally-group .mk{height:30px;width:4px;background:#f4f1e6;box-shadow:0 0 2px rgba(255,255,255,.5)}
.slate .tally-group.five:after{background:#ffd54a}
.slate .tally .tally-group .mk.struck{background:#6c7a77;box-shadow:none}
.slate .tally .tally-group .mk.struck:after{background:#ff5a6e}
.mark-strike{position:relative}
.mark-strike:after{content:"";position:absolute;left:-6px;right:-6px;top:45%;height:4px;background:var(--red);transform:rotate(-60deg)}
.tally-box{background:#fffdf5;border:3px dashed #e9d9a5;border-radius:18px;padding:14px;min-height:90px}
.counter-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:10px 0}
.counter-row .lbl{font-weight:800;font-size:22px;min-width:120px}
.big-num{font-size:44px;font-weight:800;color:var(--purple);line-height:1}
.skip-count{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.skip-count span{background:var(--purple-l);color:var(--purple-d);border-radius:10px;padding:2px 12px;font-weight:800}

/* ---------- letters ---------- */
.letters{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin:10px 0}
.lt{position:relative;width:48px;height:56px;border-radius:12px;background:var(--yellow);color:var(--ink);display:grid;place-items:center;font-size:30px;font-weight:800;box-shadow:0 4px 0 #e2a900;text-transform:uppercase}
.lt small{position:absolute;top:-10px;right:-6px;background:var(--purple);color:#fff;border-radius:50%;width:24px;height:24px;font-size:14px;display:grid;place-items:center}
.lt.b{background:var(--blue-l);box-shadow:0 4px 0 #a7cdf7}
.lt.gap{background:transparent;box-shadow:none;width:18px}
.lt.odd{background:var(--red-l);box-shadow:0 4px 0 #f5a5b1}
.input-big{font-family:inherit;font-size:24px;padding:10px 16px;border-radius:14px;border:3px solid var(--line);outline:none;width:100%;max-width:340px;font-weight:700;color:var(--ink)}
.input-big:focus{border-color:var(--purple)}
.input-num{max-width:130px;text-align:center}

/* ---------- cards (animals etc.) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.pcard{position:relative;background:#fff;border-radius:18px;border:4px solid var(--c,#ffb86b);padding:10px 6px 8px;text-align:center;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform .15s;user-select:none;-webkit-user-select:none;font-size:inherit;color:inherit;font-family:inherit}
.pcard:hover{transform:translateY(-3px) rotate(-1deg)}
.pcard .pe{font-size:52px;line-height:1.1;display:block}
.pcard .pn{display:block;font-weight:800;font-size:20px}
.pcard .pc{position:absolute;top:-12px;right:-10px;background:var(--purple);color:#fff;border-radius:50%;width:36px;height:36px;display:grid;place-items:center;font-weight:800;font-size:18px;box-shadow:0 3px 0 var(--purple-d)}
.pcard.win{border-color:var(--green);background:var(--green-l)}
.pcard.lose{border-color:var(--orange);background:var(--orange-l)}
.pcard svg{display:block;margin:0 auto}

/* ---------- number cards ---------- */
.ncards{display:flex;flex-wrap:wrap;gap:8px}
.nc{border:0;border-radius:16px;padding:6px 14px;font-weight:700;font-size:19px;cursor:pointer;color:var(--ink);font-family:inherit;box-shadow:0 3px 0 rgba(0,0,0,.08);transform:rotate(var(--rot,0deg))}
.nc.ones{background:#ffe7c7}.nc.teens{background:#cfe9ff}.nc.tens{background:#c9f2a8}
.nc.pop{animation:pop .5s}
@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.25)}100%{transform:scale(1)}}
.ngroup-title{font-weight:800;margin:10px 0 4px;color:var(--ink-2);font-size:17px}
.builder{display:flex;flex-direction:column;align-items:center;gap:10px;background:var(--purple-l);border-radius:22px;padding:16px}
.builder .num-display{font-size:72px;font-weight:800;color:var(--purple);line-height:1}
.builder input[type=range]{width:100%;max-width:420px;accent-color:var(--purple);height:30px}
.builder .cards-out{display:flex;gap:10px;min-height:52px;flex-wrap:wrap;justify-content:center}
.builder .name-out{font-size:28px;font-weight:800}
.hindi-name{font-size:20px;color:var(--ink-2)}

/* ---------- 1..99 grid ---------- */
.grid99{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;max-width:560px;margin:10px auto}
.grid99 button{aspect-ratio:1;border:0;border-radius:9px;background:#fff;font-weight:800;font-size:clamp(12px,2.6vw,18px);color:var(--ink);cursor:pointer;box-shadow:0 2px 0 var(--line);font-family:inherit;padding:0;transition:background .3s,transform .3s,opacity .3s}
.grid99 button.empty{visibility:hidden}
.grid99 button.ok{background:var(--green);color:#fff}
.grid99 button.bad{background:var(--red-l);color:var(--red)}
.grid99 button.out{opacity:.15;transform:scale(.8)}
.grid99 button.hot{background:var(--yellow)}
.grid99 button.found{background:var(--purple);color:#fff}
.clue{display:flex;align-items:center;gap:10px;background:#fff;border:3px solid var(--line);border-radius:16px;padding:8px 12px;margin:6px 0;font-weight:600}
.clue.on{border-color:var(--purple);background:var(--purple-l)}
.clue .cn{width:34px;height:34px;border-radius:50%;background:var(--purple);color:#fff;display:grid;place-items:center;font-weight:800;flex:0 0 auto}

/* ---------- bars ---------- */
.bars{display:flex;align-items:flex-end;gap:6px;height:220px;padding:10px;background:#fff;border-radius:16px;border:2px solid var(--line);overflow-x:auto}
.bar{flex:1 0 34px;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.bar i{display:block;width:100%;background:var(--blue);border-radius:8px 8px 0 0;height:0;transition:height .8s}
.bar b{font-size:14px}
.bar span{font-size:13px;color:var(--ink-2);font-weight:700}
.bar.win i{background:var(--green)}
.bar.lose i{background:var(--orange)}

/* ---------- sorting bins ---------- */
.pool{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;min-height:90px;padding:12px;border-radius:18px;background:#fff;border:3px dashed var(--line)}
.bins{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.bin{border-radius:20px;padding:10px;min-height:170px;background:var(--pink-l);border:3px solid #ffc2dc}
.bin.b2{background:var(--blue-l);border-color:#b7d8ff}
.bin h4{margin:0 0 8px;text-align:center;font-size:18px;background:rgba(255,255,255,.7);border-radius:12px;padding:4px}
.bin .drop{display:flex;flex-wrap:wrap;gap:8px;min-height:110px;align-content:flex-start;justify-content:center}
.chip{display:inline-flex;align-items:center;gap:6px;background:#fff;border-radius:14px;padding:6px 12px;font-weight:700;box-shadow:0 3px 0 var(--line);cursor:grab;user-select:none;-webkit-user-select:none;font-size:18px;touch-action:none}
.chip .ce{font-size:28px}
.chip.sel{outline:4px solid var(--yellow)}
.chip.ok{box-shadow:0 0 0 3px var(--green)}
.chip.bad{box-shadow:0 0 0 3px var(--red);animation:shake .4s}
.sortable-ghost{opacity:.4}
.bin input{width:100%;font-family:inherit;font-size:17px;font-weight:700;border:2px solid #fff;border-radius:10px;padding:4px 8px;text-align:center;margin-bottom:6px}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}

/* ---------- kids / survey ---------- */
.kids{display:grid;grid-template-columns:repeat(auto-fill,minmax(74px,1fr));gap:8px}
.kid{border:0;background:#fff;border-radius:16px;padding:4px;cursor:pointer;box-shadow:var(--shadow-sm);position:relative;transition:transform .15s}
.kid.sel{outline:4px solid var(--yellow);transform:scale(1.07)}
.kid.done{opacity:.35}
.kid.done:after{content:"✔";position:absolute;right:4px;top:0;color:var(--green);font-weight:800;font-size:22px}
.survey-table{width:100%;border-collapse:separate;border-spacing:4px;margin-top:10px}
.survey-table th,.survey-table td{background:var(--purple-l);border-radius:12px;padding:6px;text-align:center}
.survey-table th{background:#e7f7ec}
.survey-table td.lbl{background:var(--pink-l);font-weight:800;text-align:left;font-size:16px}
.survey-table button{border:0;background:transparent;cursor:pointer;padding:0}
.survey-table .cnt{font-size:24px;font-weight:800;color:var(--purple)}
.pic-graph{display:flex;gap:8px;align-items:flex-end;justify-content:center;flex-wrap:wrap;margin:12px 0;min-height:120px}
.pic-col{display:flex;flex-direction:column-reverse;align-items:center;gap:2px;background:#fff;border-radius:14px;padding:6px;min-width:64px;box-shadow:var(--shadow-sm)}
.pic-col .u{font-size:22px;line-height:1}
.pic-col .hd{margin-top:4px;font-weight:800;font-size:15px;text-align:center}

/* ---------- MCQ / quiz ---------- */
.q-card{background:#fff;border-radius:26px;box-shadow:var(--shadow);padding:18px 18px 22px;position:relative}
.q-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px;font-weight:700;color:var(--ink-2)}
.q-meta .streak{color:var(--orange)}
.q-text{font-size:clamp(21px,3.8vw,27px);font-weight:700;margin:6px 0 10px;display:flex;gap:10px;align-items:flex-start}
.q-visual{margin:10px 0;display:flex;justify-content:center;flex-wrap:wrap;gap:10px}
.opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:10px}
.opt{border:3px solid var(--line);background:#fff;border-radius:18px;padding:12px;font-size:22px;overflow-wrap:anywhere;font-weight:700;cursor:pointer;color:var(--ink);font-family:inherit;min-height:62px;transition:transform .1s,border-color .2s,background .2s}
.opt:hover{border-color:var(--purple)}
.opt:active{transform:scale(.97)}
.opt.ok{background:var(--green);border-color:var(--green);color:#fff}
.opt.bad{background:var(--red-l);border-color:var(--red);color:var(--red);animation:shake .4s}
.opt[disabled]{cursor:default}
.feedback{margin-top:14px;border-radius:16px;padding:12px 14px;font-size:19px;font-weight:600;display:none}
.feedback.show{display:block}
.feedback.ok{background:var(--green-l);color:#0d6d3d}
.feedback.bad{background:var(--orange-l);color:#9a3412}
.answer-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.level-pick{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.level{background:#fff;border-radius:22px;padding:18px;box-shadow:var(--shadow);text-align:center;cursor:pointer;border:3px solid transparent;font-family:inherit;font-size:inherit;color:inherit}
.level:hover{border-color:var(--purple)}
.level .lv-ico{font-size:48px}
.level h3{margin:.2em 0;font-size:24px}
.stars{font-size:26px;letter-spacing:2px}
.stars .off{filter:grayscale(1);opacity:.3}
.result{text-align:center;padding:20px}
.result .big{font-size:64px;font-weight:800;color:var(--purple);line-height:1}
.hint-btn{border:0;background:var(--yellow-l);color:#8a6100;border-radius:12px;padding:6px 12px;font-weight:700;cursor:pointer;font-family:inherit;font-size:16px}
.timer{font-variant-numeric:tabular-nums}

/* ---------- certificate ---------- */
.cert-wrap{background:#fff;border-radius:24px;padding:16px;box-shadow:var(--shadow);text-align:center}
.cert-wrap canvas{width:100%;max-width:800px;height:auto;border-radius:12px;box-shadow:var(--shadow-sm)}

/* ---------- answers ---------- */
.acc{background:#fff;border-radius:18px;box-shadow:var(--shadow-sm);margin:10px 0;overflow:hidden}
.acc summary{cursor:pointer;padding:14px 18px;font-weight:800;font-size:20px;list-style:none;display:flex;justify-content:space-between;gap:10px}
.acc summary::-webkit-details-marker{display:none}
.acc summary:after{content:"＋";color:var(--purple)}
.acc[open] summary:after{content:"－"}
.acc .acc-body{padding:0 18px 16px;font-size:18px}
.acc .acc-body li{margin:4px 0}
.ans{background:var(--green-l);color:#0d6d3d;border-radius:8px;padding:0 8px;font-weight:800}

/* ---------- misc ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bubble{position:relative;background:#fff;border:3px solid var(--line);border-radius:18px;padding:10px 14px;font-weight:600}
.char-row{display:flex;align-items:flex-start;gap:10px;margin:8px 0}
.char-row .av{font-size:46px;line-height:1}
.fact{display:flex;gap:12px;align-items:center;background:linear-gradient(135deg,#fff7d1,#ffe6f1);border-radius:20px;padding:14px;margin:10px 0}
.fact .fi{font-size:44px}
.signboard{display:inline-block;background:#ffd400;border:4px solid #222;border-radius:8px;padding:6px 14px;font-weight:800;letter-spacing:1px;font-size:clamp(14px,3.4vw,22px);color:#222;word-break:break-all}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(140%);opacity:0;visibility:hidden;background:var(--ink);color:#fff;padding:12px 20px;border-radius:16px;font-weight:700;z-index:99;transition:transform .35s,opacity .35s,visibility .35s;max-width:92vw;text-align:center}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1;visibility:visible}
.site-footer{text-align:center;padding:24px 16px 40px;color:var(--ink-2)}
.site-footer p{margin:.2em 0}
.loader{text-align:center;padding:60px 0;font-size:46px}
.loader span{display:inline-block;animation:bob 1s infinite}
.loader span:nth-child(2){animation-delay:.15s}.loader span:nth-child(3){animation-delay:.3s}
.mini-q{background:var(--blue-l);border-radius:18px;padding:12px 14px;margin:12px 0}
.mini-q .mq-text{font-weight:700;margin-bottom:8px}
.pill{display:inline-block;border-radius:999px;padding:2px 12px;font-weight:700;background:var(--purple-l);color:var(--purple-d);margin:2px}
.pill.g{background:var(--green-l);color:#0d6d3d}
.pill.o{background:var(--orange-l);color:#9a3412}
.list-clean{list-style:none;padding:0;margin:6px 0}
.list-clean li{padding:4px 0}

@media (max-width:640px){
  body{font-size:18px}
  .brand-text{font-size:22px}
  .step{padding:16px 14px 6px}
  .player-nav{padding:10px 14px 16px}
  .bins,.two-col{grid-template-columns:1fr}
  .pill-btn{padding:6px 12px;font-size:15px}
  .icon-btn{width:38px;height:38px;font-size:18px}
  .lt{width:40px;height:48px;font-size:26px}
  .card-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}
  .pcard .pe{font-size:44px}
  .mascots{font-size:50px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media print{.topbar,.site-footer,.player-nav,.tabs{display:none}}
.mini-q .opt{font-size:19px}