:root{
  --y:#FFD100;--y2:#FFB800;--b:#0A2A6B;--b2:#123C97;--r:#E4262E;--g:#12B76A;--bg:#F4F6FB;--card:#fff;--ink:#0F172A;--mut:#64748B;--line:#E2E8F0;--soft:#EEF2FF;
  --sh:0 10px 30px rgba(10,42,107,.10);--rad:20px;
}
[data-theme=dark]{--bg:#0B1220;--card:#131C31;--ink:#E8EEFB;--mut:#93A3C1;--line:#24304A;--soft:#18233D;--sh:0 10px 30px rgba(0,0,0,.4)}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{font-size:calc(16px * var(--fs,1))}
body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);min-height:100vh;line-height:1.45}
button{font:inherit;cursor:pointer;border:0;color:inherit}
h1,h2,h3{line-height:1.15;letter-spacing:-.01em}
a{color:var(--b2)}
#app{max-width:1040px;margin:0 auto;padding:0 16px 96px}
.top{display:flex;align-items:center;gap:12px;padding:14px 0;position:sticky;top:0;z-index:20;background:linear-gradient(var(--bg) 80%,transparent)}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.15rem}
.logo i{width:34px;height:34px;border-radius:10px;background:linear-gradient(180deg,var(--y) 50%,var(--b) 50% 75%,var(--r) 75%);display:inline-block;box-shadow:0 4px 12px rgba(0,0,0,.2)}
.sp{flex:1}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:99px;background:var(--card);box-shadow:var(--sh);font-weight:800;font-size:.9rem;white-space:nowrap}
.chip.fire{color:#F97316}.chip.xp{color:var(--b2)}
.nav{position:fixed;bottom:0;left:0;right:0;z-index:30;display:flex;justify-content:center;background:var(--card);border-top:1px solid var(--line);box-shadow:0 -6px 24px rgba(0,0,0,.08)}
.nav div{display:flex;max-width:1040px;width:100%}
.nav button{flex:1;padding:9px 2px 8px;background:none;font-size:.7rem;font-weight:700;color:var(--mut);display:flex;flex-direction:column;align-items:center;gap:2px}
.nav button span{font-size:1.35rem;filter:grayscale(1);opacity:.7}
.nav button.on{color:var(--b2)}.nav button.on span{filter:none;opacity:1;transform:translateY(-2px)}
[data-theme=dark] .nav button.on{color:var(--y)}
.card{background:var(--card);border-radius:var(--rad);box-shadow:var(--sh);padding:18px;margin-bottom:16px}
.hero{background:linear-gradient(135deg,var(--b) 0%,var(--b2) 60%,#1E56C9 100%);color:#fff;border-radius:26px;padding:22px;position:relative;overflow:hidden;margin-bottom:16px;box-shadow:0 18px 40px rgba(10,42,107,.35)}
.hero:before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(var(--y),transparent 70%);opacity:.35}
.hero h1{font-size:1.5rem;margin-bottom:4px}
.hero p{opacity:.9}
.grid{display:grid;gap:14px}.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:700px){.g3{grid-template-columns:1fr 1fr}.g4{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.g2{grid-template-columns:1fr}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:14px;font-weight:800;background:var(--y);color:#1b1500;box-shadow:0 6px 0 var(--y2);transition:.1s;text-decoration:none}
.btn:active{transform:translateY(4px);box-shadow:0 2px 0 var(--y2)}
.btn.blue{background:var(--b2);color:#fff;box-shadow:0 6px 0 var(--b)}
.btn.ghost{background:var(--card);color:var(--ink);box-shadow:0 4px 0 var(--line);border:1px solid var(--line)}
.btn.green{background:var(--g);color:#fff;box-shadow:0 6px 0 #0c8a50}
.btn.red{background:var(--r);color:#fff;box-shadow:0 6px 0 #a91a21}
.btn.sm{padding:8px 14px;font-size:.85rem;border-radius:11px;box-shadow:0 4px 0 var(--y2)}
.btn[disabled]{opacity:.5;pointer-events:none}
.btn.wide{width:100%}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.mut{color:var(--mut);font-size:.9rem}
h2.sec{font-size:1.2rem;margin:22px 2px 10px;display:flex;align-items:center;gap:8px}
.tile{display:flex;gap:12px;align-items:center;text-align:left;width:100%;background:var(--card);border-radius:18px;padding:14px;box-shadow:var(--sh);border:2px solid transparent;transition:.12s}
.tile:hover{border-color:var(--y)}.tile:active{transform:scale(.98)}
.tile .ic{font-size:1.8rem;width:50px;height:50px;border-radius:14px;background:var(--soft);display:grid;place-items:center;flex:none}
.tile b{display:block;font-size:1rem}.tile small{color:var(--mut)}
.bar{height:10px;border-radius:99px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--y),var(--y2));border-radius:99px;transition:width .6s}
.bar.g i{background:linear-gradient(90deg,#34D399,var(--g))}.bar.b i{background:linear-gradient(90deg,#60A5FA,var(--b2))}
.ring{--p:0;width:96px;height:96px;border-radius:50%;background:conic-gradient(var(--y) calc(var(--p)*1%),rgba(255,255,255,.2) 0);display:grid;place-items:center;flex:none}
.ring div{width:78px;height:78px;border-radius:50%;background:var(--b);display:grid;place-items:center;text-align:center;font-weight:900;font-size:1.25rem;color:#fff;line-height:1}
.ring small{display:block;font-size:.6rem;font-weight:700;opacity:.8}
.card .ring div{background:var(--card);color:var(--ink)}
.pill{display:inline-block;padding:3px 10px;border-radius:99px;font-size:.75rem;font-weight:800;background:var(--soft);color:var(--b2)}
.pill.y{background:#FFF3B0;color:#6b5200}.pill.g{background:#D1FADF;color:#05603A}.pill.r{background:#FEE4E2;color:#B42318}
/* quiz */
.quiz{max-width:720px;margin:0 auto}
.qhead{display:flex;align-items:center;gap:12px;margin:6px 0 14px}
.qhead .bar{flex:1;height:14px}
.x{background:none;font-size:1.5rem;color:var(--mut);padding:4px 8px}
.qcard{background:var(--card);border-radius:24px;padding:22px;box-shadow:var(--sh)}
.qmeta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.qtext{font-size:1.2rem;font-weight:800;margin-bottom:16px}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;background:var(--card);border:2px solid var(--line);border-radius:16px;padding:14px;margin-bottom:10px;font-weight:600;transition:.1s;box-shadow:0 3px 0 var(--line)}
.opt:hover{border-color:var(--b2)}
.opt .k{width:30px;height:30px;border-radius:9px;background:var(--soft);display:grid;place-items:center;font-weight:900;flex:none;color:var(--b2)}
.opt.sel{border-color:var(--b2);background:var(--soft)}
.opt.ok{border-color:var(--g);background:#E8FBF0;color:#05603A;box-shadow:0 3px 0 #86e0ad}
.opt.bad{border-color:var(--r);background:#FEF0EF;color:#B42318;box-shadow:0 3px 0 #f5a3a0;animation:shake .35s}
[data-theme=dark] .opt.ok{background:#0e3a26;color:#a6f4c5}[data-theme=dark] .opt.bad{background:#42191a;color:#fecdca}
.opt.dim{opacity:.55}
@keyframes shake{25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.fb{border-radius:18px;padding:14px 16px;margin-top:12px;animation:pop .25s}
.fb.ok{background:#E8FBF0;color:#05603A}.fb.bad{background:#FEF0EF;color:#B42318}
[data-theme=dark] .fb.ok{background:#0e3a26;color:#a6f4c5}[data-theme=dark] .fb.bad{background:#42191a;color:#fecdca}
.fb b{display:block;margin-bottom:4px}.fb small{display:block;opacity:.75;margin-top:6px}
@keyframes pop{from{transform:scale(.96);opacity:0}}
.foot{position:sticky;bottom:0;padding:14px 0;background:linear-gradient(transparent,var(--bg) 35%)}
.timer{font-weight:900;font-variant-numeric:tabular-nums;padding:6px 12px;border-radius:99px;background:var(--card);box-shadow:var(--sh)}.timer.low{color:var(--r);animation:blink 1s infinite}
@keyframes blink{50%{opacity:.5}}
.combo{position:fixed;top:70px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,#F97316,#EF4444);color:#fff;font-weight:900;padding:8px 18px;border-radius:99px;z-index:50;animation:pop .3s;box-shadow:0 10px 24px rgba(239,68,68,.4)}
.xpfloat{position:fixed;z-index:60;font-weight:900;color:var(--b2);font-size:1.4rem;pointer-events:none;animation:up 1s forwards}
@keyframes up{to{transform:translateY(-60px);opacity:0}}
.qnav{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.qnav button{width:34px;height:34px;border-radius:9px;background:var(--soft);font-weight:800;font-size:.8rem;color:var(--b2)}
.qnav button.done{background:var(--b2);color:#fff}.qnav button.cur{outline:3px solid var(--y)}.qnav button.flag{background:var(--r);color:#fff}
.flash{perspective:1000px;height:300px;margin-bottom:14px}
.flash>div{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d;cursor:pointer}
.flash.flip>div{transform:rotateY(180deg)}
.flash .f{position:absolute;inset:0;backface-visibility:hidden;border-radius:24px;padding:24px;display:flex;align-items:center;justify-content:center;text-align:center;font-weight:800;font-size:1.25rem;box-shadow:var(--sh);background:var(--card)}
.flash .b{transform:rotateY(180deg);background:linear-gradient(135deg,var(--b),var(--b2));color:#fff}
/* results */
.score{font-size:4rem;font-weight:900;line-height:1}
.big{font-size:2rem;font-weight:900}
.pass{background:linear-gradient(135deg,#059669,#10B981);color:#fff}.fail{background:linear-gradient(135deg,#B42318,#EF4444);color:#fff}
/* passport */
.stamps{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:12px}
.stamp{aspect-ratio:1;border-radius:18px;background:var(--soft);display:grid;place-items:center;text-align:center;padding:8px;position:relative;font-weight:800;font-size:.78rem;color:var(--mut);border:2px dashed var(--line)}
.stamp .em{font-size:1.9rem;filter:grayscale(1);opacity:.35;display:block}
.stamp.on{background:var(--card);border:3px solid var(--sc,var(--r));color:var(--sc,var(--r));transform:rotate(var(--rot,-3deg));box-shadow:var(--sh)}
.stamp.on .em{filter:none;opacity:1}
.stamp small{display:block;font-size:.65rem;font-weight:700;opacity:.8}
.badge{display:flex;gap:10px;align-items:center;padding:10px;border-radius:14px;background:var(--soft)}
.badge.off{opacity:.45;filter:grayscale(1)}
.badge .em{font-size:1.7rem}.badge b{display:block;font-size:.9rem}.badge small{color:var(--mut);font-size:.75rem}
.cal{display:grid;grid-template-columns:repeat(15,1fr);gap:4px}
.cal i{aspect-ratio:1;border-radius:6px;background:var(--line);display:block;position:relative}
.cal i.l1{background:#FDE68A}.cal i.l2{background:#FBBF24}.cal i.l3{background:#F59E0B}.cal i.today{outline:3px solid var(--b2)}.cal i.fut{opacity:.35}
.lesson h3{margin:16px 0 6px}.lesson li{margin:6px 0 6px 20px}
.lesson .mn{background:#FFF8D6;border-left:6px solid var(--y);padding:12px 14px;border-radius:12px;margin-top:14px;color:#4a3b00;font-weight:600}
.modal{position:fixed;inset:0;background:rgba(5,12,32,.7);z-index:80;display:grid;place-items:center;padding:20px;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.modal>div{background:var(--card);border-radius:26px;padding:26px;max-width:460px;width:100%;text-align:center;max-height:90vh;overflow:auto}
.modal .em{font-size:4rem}
input,select{font:inherit;padding:12px 14px;border-radius:12px;border:2px solid var(--line);background:var(--card);color:var(--ink);width:100%}
input:focus{outline:0;border-color:var(--b2)}
label{display:block;font-weight:700;margin:12px 0 6px}
.seg{display:flex;gap:6px;flex-wrap:wrap}.seg button{padding:8px 14px;border-radius:99px;background:var(--soft);font-weight:700;color:var(--b2)}.seg button.on{background:var(--b2);color:#fff}
.lock{position:relative}.lock:after{content:"🔒";position:absolute;right:12px;top:10px}
.plan{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:14px;background:var(--soft);margin-bottom:8px}
.plan.now{background:#FFF3B0;color:#4a3b00}.plan.done{opacity:.6}
canvas#fx{position:fixed;inset:0;pointer-events:none;z-index:90}
.hide{display:none!important}
.paywall{background:linear-gradient(135deg,#0A2A6B,#7C3AED);color:#fff;border-radius:24px;padding:22px;text-align:center}
.paywall .price{font-size:2.6rem;font-weight:900;color:var(--y)}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}