@font-face{font-family:Nunito;font-weight:400;font-display:swap;src:url(/fonts/nunito-regular.woff) format("woff")}@font-face{font-family:Nunito;font-weight:500 600;font-display:swap;src:url(/fonts/nunito-semibold.woff) format("woff")}@font-face{font-family:Nunito;font-weight:700 900;font-display:swap;src:url(/fonts/nunito-bold.woff) format("woff")}:root{color-scheme:light;--paper: #F7F8FA;--surface: #FFFFFF;--ink: #111827;--ink-muted: #4B5563;--ink-faint: #6B7280;--line: #E4E7EC;--locked: #EEF0F3;--done: #1E7F4F;--sun: #FFB81F;--primary: #2F55D4;--primary-soft: #EEF2FC;--primary-container: #F3F6FD;--coin: #C2620A;--coin-soft: #FBF3EA;--coin-text: #B45F06;--green: #1E7F4F;--green-soft: #EAF4EE;--red: #C53030;--red-soft: #FBEDED;--amber: #C2620A;--amber-soft: #FBF3EA;--amber-line: #F3DDC2;--amber-dot: #E8952E;--amber-ink: #B45F06;--parent: #1B2440;--dot: #E5484D;--r-large: 28px;--r-card: 20px;--r-fcard: 18px;--r-small: 14px;--shadow-1: 0 1px 2px rgba(17, 24, 39, .06);--shadow-2: 0 6px 18px rgba(17, 24, 39, .1);--safe-b: env(safe-area-inset-bottom, 0px);--nav-h: 68px;--side-w: 264px;--d-deep: #3E4A6B;--d-mid: #8D99BA;--d-tint: #E8EBF3;--d-text: #37415E;--d-dark: #282F45}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}html,body{margin:0;padding:0}body{background:var(--paper);color:var(--ink);font-family:Nunito,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;padding:0;text-align:inherit}button:disabled{cursor:default}input,select,textarea{font:inherit;color:inherit}a{color:var(--primary)}:focus-visible{outline:3px solid color-mix(in srgb,var(--primary) 50%,transparent);outline-offset:2px}.svg{display:inline-flex;line-height:0;flex:none}.icon svg{width:1em;height:1em;display:block}.svg.icon{font-size:inherit;color:inherit;font-weight:inherit}.coin-ic{display:block;flex:none}img{max-width:100%}[hidden]{display:none!important}#app{min-height:100dvh}.grow{flex:1;min-width:0}.row{display:flex;align-items:center;gap:10px}.col{display:flex;flex-direction:column;gap:12px}.muted{color:var(--ink-faint)}.center{text-align:center}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.screen{min-height:100dvh;display:flex;flex-direction:column;background:var(--paper)}.wrap{width:100%;max-width:640px;margin:0 auto;padding:0 20px}@media (max-width: 359px){.wrap{padding:0 16px}}.shell{min-height:100dvh}.shell-main{padding-bottom:calc(var(--nav-h) + var(--safe-b));min-width:0}.side-nav{display:none}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--line);padding:0 8px var(--safe-b);display:flex;height:calc(var(--nav-h) + var(--safe-b))}.nav-tab{flex:1;height:60px;margin-top:4px;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ink-faint)}.nav-tab .pill{position:relative;width:40px;height:32px;border-radius:99px;display:grid;place-items:center;font-size:24px;transition:width .25s cubic-bezier(.3,1.4,.5,1),background .18s}.nav-tab .label{margin-top:4px;font-size:12px;font-weight:600;line-height:1.2}.nav-tab.on{color:var(--primary)}.nav-tab.on .pill{width:60px;background:var(--primary-soft)}.nav-tab.on .label{font-weight:800}.nav-tab .dot{position:absolute;top:3px;left:calc(50% + 6px);width:10px;height:10px;border-radius:50%;background:var(--dot);border:2px solid #fff}@media (min-width: 960px){.shell{display:grid;grid-template-columns:var(--side-w) 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25px;background-size:6px 6px;background-repeat:no-repeat;padding-right:40px}.toggle{width:52px;height:32px;border-radius:99px;background:var(--line);position:relative;flex:none;transition:background .2s}.toggle:after{content:"";position:absolute;left:4px;top:4px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0003;transition:left .2s}.toggle.on{background:var(--primary)}.toggle.on:after{left:24px}.avatar{display:block;object-fit:contain}.picker{width:100%;max-width:520px;margin:0 auto;padding:20px;display:flex;flex-direction:column;gap:20px}.picker .logo{width:84px;height:84px;border-radius:24px;margin:12px auto 0;display:block;box-shadow:var(--shadow-1)}.picker h1{font-size:28px;font-weight:800;text-align:center;margin:0;letter-spacing:-.3px;line-height:1.25}.picker .lead{font-size:15px;color:var(--ink-faint);text-align:center;margin:-12px 0 0}.child-grid{display:grid;grid-template-columns:1fr 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.lock-ic{width:64px;height:64px;border-radius:50%;background:var(--parent);color:#fff;display:grid;place-items:center;font-size:30px}.gate h2{margin:0;font-size:22px;font-weight:800;text-align:center}.gate .sub{font-size:14px;color:var(--ink-faint);text-align:center;line-height:1.45;margin:0}.pin-dots{display:flex;gap:16px;padding:8px 0}.pin-dots i{width:18px;height:18px;border-radius:50%;border:2px solid var(--line);background:#fff;transition:background .12s,border-color .12s}.pin-dots i.on{background:var(--ink);border-color:var(--ink)}.pin-err{min-height:20px;font-size:14px;font-weight:700;color:var(--red);text-align:center;margin:0}.keypad{display:grid;grid-template-columns:repeat(3,84px);gap:16px}.keypad button{height:64px;border-radius:16px;background:#fff;border:1px solid var(--line);font-size:26px;font-weight:700;display:grid;place-items:center}.keypad button:hover:not(:disabled){border-color:var(--ink-faint)}.keypad button:active:not(:disabled){background:var(--paper)}.keypad button.flat{background:transparent;border-color:transparent;font-size:24px}.keypad button.flat.txt{font-size:13px;font-weight:700;color:var(--primary)}.keypad button:disabled{color:var(--line)}.kbd-hint{font-size:12px;color:var(--ink-faint);display:none;align-items:center;gap:6px}@media (min-width: 960px){.gate-page{display:grid;place-items:center;flex:1;padding-bottom:64px}.gate{background:#fff;border:1px solid var(--line);border-radius:var(--r-large);padding:36px 40px 28px;max-width:460px;box-shadow:var(--shadow-1)}.kbd-hint{display:inline-flex}}.editor-body{width:100%;max-width:520px;margin:0 auto;padding:0 20px 20px;display:flex;flex-direction:column;gap:16px}.editor-body .fcard>b,.fcard .lbl{font-size:16px;font-weight:800}.gender-pick{display:grid;grid-template-columns:1fr 1fr;gap:12px}.gender-pick button{border:2px solid var(--line);border-radius:18px;padding:10px;display:flex;flex-direction:column;align-items:center;gap:6px;font-weight:800;font-size:15px}.gender-pick button img{height:170px;width:100px;object-fit:contain}.gender-pick button.on{border-color:var(--primary);color:var(--primary)}.year-step{display:flex;align-items:center;gap:16px}.year-step .mid{flex:1;text-align:center}.year-step .mid b{display:block;font-size:28px;font-weight:800;line-height:1.2}.year-step .mid span:where(:not(.svg)){font-size:13px;color:var(--ink-faint)}.step-btn{width:52px;height:52px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:24px;display:grid;place-items:center;flex:none}.step-btn:disabled{background:var(--paper);color:var(--line)}.grade-seg{display:flex;gap:4px;padding:4px;border-radius:16px;background:var(--paper);border:1px solid var(--line)}.grade-seg button{flex:1;height:72px;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center}.grade-seg small{font-size:10px;font-weight:800;color:var(--ink-faint);letter-spacing:.3px}.grade-seg b{font-size:26px;font-weight:800;line-height:1.1}.grade-seg i{width:5px;height:5px;border-radius:50%;margin-top:2px}.grade-seg i.age{background:var(--green)}.grade-seg button.on{background:var(--primary);color:#fff}.grade-seg button.on small{color:#ffffffbf}.grade-seg button.on i.age{background:#fff}.grade-hint{display:flex;align-items:center;gap:10px;padding:12px;border-radius:12px;background:var(--primary-soft);font-size:13px;width:100%}.grade-hint b{color:var(--primary);font-weight:800;white-space:nowrap}.save-bar{background:#fff;padding:12px 20px calc(12px + var(--safe-b));position:sticky;bottom:0;z-index:5;border-top:1px solid var(--line)}.save-bar .inner{max-width:520px;margin:0 auto}@media (min-width: 960px){.editor-body{max-width:1040px;display:grid;grid-template-columns:380px minmax(0,1fr);align-items:start;gap:20px;padding:8px 32px 24px}.editor-body .side{position:sticky;top:20px;display:flex;flex-direction:column;gap:16px}.editor-body .main{display:flex;flex-direction:column;gap:16px}.save-bar .inner{max-width:1040px;padding:0 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var(--L-line);padding:10px 14px;font-size:20px;font-weight:900;text-align:center;color:var(--L-ink);line-height:1.3}.quiz-opt:hover:not(:disabled){border-color:var(--L-blue-line)}.quiz-opt.right{background:var(--L-green-soft);border-color:var(--L-green);color:var(--L-green)}.quiz-opt.wrong{background:var(--L-red-soft);border-color:#f2b8b8;color:var(--L-red);animation:shake .3s}.outro-scene{padding:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center}.outro-scene .kids{height:42%}.outro-scene h2{margin:0;font-size:26px;font-weight:900}.outro-cta{width:100%;max-width:420px;height:56px;border-radius:18px;background:var(--L-blue);color:#fff;font-size:18px;font-weight:900;display:flex;align-items:center;justify-content:center;gap:8px}.outro-cta:hover{filter:brightness(1.08)}.outro-again{border-radius:99px;padding:8px 14px;font-size:15px;font-weight:800;color:var(--L-blue)}@media (min-width: 960px){.scroll-scene{padding:28px 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.t{flex:1;min-width:0}.td-top small{display:block;font-size:11px;font-weight:800;color:var(--td-cyan);letter-spacing:1.2px}.td-top b{display:block;font-size:16px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.streak-chip{display:inline-flex;align-items:center;gap:4px;border-radius:99px;background:#ffc24b29;border:1px solid rgba(255,194,75,.5);padding:5px 10px;color:var(--td-amber);font-size:13px;font-weight:900;animation:pulse .7s ease-in-out infinite alternate;flex:none}.streak-chip .icon{font-size:16px}@keyframes pulse{to{transform:scale(1.08)}}.chain{display:flex;gap:5px;align-items:center}.chain i{flex:1;height:8px;border-radius:99px;background:var(--td-line)}.chain i.c{background:var(--td-green)}.chain i.f{background:var(--td-amber)}.chain i.m{background:var(--td-coral)}.chain i.now{background:var(--td-cyan);height:10px;animation:glow .8s ease-in-out infinite alternate}@keyframes glow{0%{opacity:.45}}.td-body{flex:1;width:100%;max-width:640px;margin:0 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1fr;gap:12px}.td-opts.one{grid-template-columns:1fr}.td-opt{display:flex;align-items:center;min-height:68px;border-radius:18px;background:var(--td-card);border:1.5px solid var(--td-line);padding:10px 12px;color:var(--td-ink);transition:background .22s}.td-opt:hover:not(:disabled){background:var(--td-card-hi)}.td-opt .lt{width:28px;height:28px;border-radius:9px;background:var(--td-card-hi);display:grid;place-items:center;font-size:13px;font-weight:900;color:var(--td-muted);flex:none}.td-opt .v{flex:1;text-align:center;font-weight:900;font-size:var(--fs, 18px);line-height:1.3;padding-right:28px}.td-opt.right{background:var(--td-green);border-color:var(--td-green);color:var(--td-green-deep)}.td-opt.right .lt{background:#ffffff40;color:var(--td-green-deep);font-size:18px}.td-opt.wrong{background:var(--td-coral-deep);border-color:var(--td-coral);color:var(--td-coral)}.td-opt.wrong .lt{background:#ffffff40;color:var(--td-coral);font-size:18px}.td-bottom{position:sticky;bottom:0;background:var(--td-bottom);padding:12px 16px calc(12px + var(--safe-b));z-index:5}.td-bottom .inner{max-width:640px;margin:0 auto;min-height:52px;display:flex;align-items:center;justify-content:center}.ghost-btn{width:100%;min-height:52px;border-radius:16px;border:1px solid var(--td-line);display:flex;align-items:center;justify-content:center;gap:8px;color:var(--td-muted);font-size:15px;font-weight:800}.ghost-btn:hover{background:#ffffff0a}.ghost-btn .icon{font-size:20px}.td-correct{display:flex;align-items:center;gap:10px;color:var(--td-green);font-size:19px;font-weight:900}.td-correct .ic{width:30px;height:30px;border-radius:50%;background:var(--td-green);color:var(--td-green-deep);display:grid;place-items:center;font-size:20px}.amber-btn{width:100%;min-height:54px;border-radius:16px;background:var(--td-amber);color:var(--td-amber-ink);display:flex;align-items:center;justify-content:center;gap:8px;font-size:17px;font-weight:900;padding:0 16px}.amber-btn:hover{filter:brightness(1.05)}.amber-btn .icon{font-size:20px}.an-back{position:fixed;inset:0;z-index:30;display:flex;flex-direction:row;align-items:flex-end;justify-content:center;background:#050a1e59;animation:fade .2s}.an-sheet{width:100%;max-width:720px;max-height:88dvh;overflow-y:auto;background:var(--td-panel);color:var(--td-panel-ink);border-radius:28px 28px 0 0;padding:10px 18px calc(18px + var(--safe-b));display:flex;flex-direction:column;gap:12px;animation:up .28s cubic-bezier(.2,.9,.3,1)}.an-sheet 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