:root{--coral: #D85A30;--coral-d: #993C1D;--coral-l: #FAECE7;--mint: #1D9E75;--mint-d: #0F6E56;--mint-l: #E1F5EE;--purple: #7F77DD;--purple-d: #534AB7;--purple-l: #EEEDFE;--amber: #BA7517;--amber-l: #FAEEDA;--amber-d: #633806;--bg: #FBFAF7;--surface: #FFFFFF;--surface-soft: #F5F3EE;--border: #ECE9E1;--text: #22201C;--text-sub: #6B6862;--text-muted: #A5A199}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:Nunito,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:clip;max-width:100%;overscroll-behavior-y:none}@supports not (overflow: clip){body{overflow-x:hidden}}.loading-screen,.quiz-loading{display:flex;align-items:center;justify-content:center;min-height:60vh;color:var(--text-sub);font-weight:600}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem;padding-top:max(1rem,env(safe-area-inset-top));padding-bottom:max(1rem,env(safe-area-inset-bottom))}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:2.25rem 2rem;width:100%;max-width:380px;text-align:center}.auth-logo{font-size:30px;font-weight:800;color:var(--coral);margin-bottom:4px;letter-spacing:-.5px}.auth-logo span{color:var(--mint)}.auth-tagline{font-size:15px;color:var(--text-sub);margin-bottom:1.75rem;font-weight:600}.auth-card form{display:flex;flex-direction:column;gap:10px}.auth-card input{padding:13px 16px;border:2px solid var(--border);border-radius:14px;font-size:15px;font-family:inherit;font-weight:600;background:var(--bg);transition:border-color .15s}.auth-card input::placeholder{color:var(--text-muted);font-weight:500}.auth-card input:focus{outline:none;border-color:var(--mint)}.btn-primary{padding:14px;background:var(--mint);color:#fff;border:none;border-radius:14px;font-size:16px;font-weight:700;font-family:inherit;cursor:pointer;box-shadow:0 4px 0 var(--mint-d);transition:transform .1s,box-shadow .1s}.btn-primary:hover{transform:translateY(1px);box-shadow:0 3px 0 var(--mint-d)}.btn-primary:active{transform:translateY(4px);box-shadow:0 0 0 var(--mint-d)}.btn-primary:disabled{opacity:.5;cursor:default;box-shadow:0 4px 0 var(--mint-d)}.btn-google{width:100%;padding:13px;margin-top:10px;background:var(--surface);border:2px solid var(--border);border-radius:14px;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;transition:background .15s}.btn-google:hover{background:var(--surface-soft)}.auth-message{margin-top:1rem;font-size:13px;font-weight:600;color:var(--coral-d);background:var(--coral-l);padding:12px;border-radius:12px}.auth-switch{margin-top:1.5rem;font-size:14px;color:var(--text-sub);font-weight:600}.auth-switch button{background:none;border:none;color:var(--mint);font-weight:700;cursor:pointer;font-size:14px;font-family:inherit}.shell{max-width:440px;width:100%;margin:0 auto;padding:1rem;min-height:100vh;padding-top:max(1rem,env(safe-area-inset-top));padding-left:max(1rem,env(safe-area-inset-left));padding-right:max(1rem,env(safe-area-inset-right));padding-bottom:max(1rem,env(safe-area-inset-bottom))}.top{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem}.brand{display:flex;align-items:center;gap:9px}.brand-mark{width:34px;height:34px;border-radius:11px;overflow:hidden;display:flex;align-items:center;justify-content:center;flex-shrink:0}.brand-mark svg{border-radius:11px}.auth-mark{display:flex;justify-content:center;margin-bottom:14px}.auth-mark svg{border-radius:20px;box-shadow:0 6px 18px #d85a3047}.brand-name{font-size:20px;font-weight:800;letter-spacing:-.5px}.top-stats{display:flex;gap:7px}.stat-pill{display:flex;align-items:center;gap:5px;padding:6px 12px;border-radius:20px;font-size:15px;font-weight:800;border:none;font-family:inherit;cursor:default}.stat-pill i{font-size:17px}.stat-fire{background:#fac775;color:var(--amber-d)}.stat-xp{background:#cecbf6;color:var(--purple-d)}.stat-out{background:var(--surface-soft);color:var(--text-sub);cursor:pointer;padding:6px 10px}.stat-out:hover{background:var(--border)}.streak-card{background:var(--coral);border-radius:22px;padding:1.25rem;margin-bottom:1rem;position:relative;overflow:hidden}.streak-glow{position:absolute;right:-24px;top:-24px;opacity:.15;pointer-events:none}.streak-glow i{font-size:140px;color:#fff}.streak-inner{position:relative}.streak-label{font-size:14px;color:var(--coral-l);font-weight:700;margin-bottom:2px}.streak-count{display:flex;align-items:baseline;gap:9px;margin-bottom:14px}.streak-num{font-size:42px;font-weight:800;color:#fff;line-height:1}.streak-unit{font-size:16px;color:#f5c4b3;font-weight:700}.streak-week{display:flex;gap:6px}.streak-day{flex:1;text-align:center}.streak-box{width:100%;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:4px;font-size:17px}.streak-box.done{background:#fff;color:var(--coral)}.streak-box.today{background:#fff;color:var(--coral);border:2px solid white;box-shadow:0 0 0 3px #ffffff59}.streak-box.future{background:#ffffff38;color:#f5c4b3}.streak-day span{font-size:12px;color:#f5c4b3;font-weight:700}.streak-day .day-today{color:#fff}.goal-card{background:var(--purple-l);border:none;border-radius:18px;padding:1rem 1.1rem;margin-bottom:1rem}.goal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:11px}.goal-title{font-size:15px;font-weight:800;color:var(--purple-d)}.goal-count{font-size:13px;color:var(--purple);font-weight:700}.goal-bar{display:flex;gap:6px}.goal-seg{flex:1;height:10px;border-radius:6px;background:#7f77dd40}.goal-seg.filled{background:var(--purple)}.continue-btn{width:100%;background:var(--mint);border:none;border-radius:18px;padding:1rem 1.1rem;display:flex;align-items:center;justify-content:space-between;cursor:pointer;margin-bottom:1.5rem;font-family:inherit;box-shadow:0 4px 0 var(--mint-d);transition:transform .1s,box-shadow .1s}.continue-btn:hover{transform:translateY(1px);box-shadow:0 3px 0 var(--mint-d)}.continue-btn:active{transform:translateY(4px);box-shadow:0 0 0 var(--mint-d)}.continue-left{display:flex;align-items:center;gap:13px}.continue-icon{width:46px;height:46px;border-radius:13px;background:#ffffff38;display:flex;align-items:center;justify-content:center;color:#fff;font-size:25px}.continue-text{text-align:left}.continue-title{font-size:16px;font-weight:800;color:#fff}.continue-sub{font-size:12px;color:var(--mint-l);font-weight:600;margin-top:1px}.continue-play{color:#fff;font-size:24px}.path-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.path-title{font-size:17px;font-weight:800}.year-switch{display:flex;gap:4px;background:var(--surface-soft);padding:4px;border-radius:12px}.year-btn{padding:6px 12px;font-size:13px;font-weight:700;border:none;background:transparent;border-radius:9px;cursor:pointer;color:var(--text-sub);font-family:inherit;transition:all .12s}.year-btn.active{background:var(--surface);color:var(--mint);box-shadow:0 1px 3px #0000000f}.module-list{display:flex;flex-direction:column;gap:9px;margin-bottom:1.5rem}.module-row{display:flex;align-items:center;gap:13px;padding:12px;border-radius:16px;background:var(--surface);border:2px solid var(--border);cursor:pointer;font-family:inherit;text-align:left;transition:transform .1s,box-shadow .12s}.module-row:hover{transform:translateY(-2px)}.module-row.locked{cursor:default;opacity:.6}.module-row.locked:hover{transform:none;border-color:var(--border)}.module-icon{width:42px;height:42px;border-radius:13px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:22px;color:var(--text-muted)}.module-info{flex:1;min-width:0}.module-name{font-size:14px;font-weight:800;margin-bottom:5px}.module-locked-hint{font-size:12px;color:var(--text-muted);font-weight:600}.module-track{height:7px;border-radius:5px;background:var(--surface-soft);overflow:hidden}.module-fill{height:100%;border-radius:5px;transition:width .5s}.module-pct{font-size:13px;font-weight:800;color:var(--text-sub);min-width:34px;text-align:right}.level-foot{display:flex;align-items:center;gap:13px;background:var(--purple-l);border-radius:18px;padding:1rem 1.1rem}.level-badge{width:44px;height:44px;border-radius:14px;background:var(--purple);color:#fff;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:800;flex-shrink:0}.level-info{flex:1}.level-name{font-size:14px;font-weight:800;color:var(--purple-d);margin-bottom:5px}.level-track{height:7px;border-radius:5px;background:#7f77dd40;overflow:hidden}.level-fill{height:100%;background:var(--purple);border-radius:5px;transition:width .5s}.level-xp{font-size:13px;font-weight:800;color:var(--purple-d)}.quiz-header{display:flex;align-items:center;gap:12px;margin-bottom:1.5rem}.btn-back{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:8px 14px;cursor:pointer;font-size:14px;font-weight:700;font-family:inherit;color:var(--text-sub)}.btn-back:hover{background:var(--surface-soft)}.quiz-progress{flex:1}.q-count{font-size:13px;color:var(--text-sub);font-weight:700}.q-bar{height:10px;background:var(--surface-soft);border-radius:8px;overflow:hidden;margin-top:5px}.q-fill{height:100%;background:var(--mint);border-radius:8px;transition:width .4s}.hearts{font-size:18px;letter-spacing:1px}.q-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:1.35rem;margin-bottom:1rem}.q-cat{font-size:11px;font-weight:800;color:var(--mint);text-transform:uppercase;letter-spacing:.7px}.q-text{font-size:17px;font-weight:700;line-height:1.5;margin-top:9px}.q-options{display:flex;flex-direction:column;gap:9px;margin-bottom:1rem}.q-option{display:flex;align-items:center;gap:11px;text-align:left;padding:13px 15px;background:var(--surface);border:2px solid var(--border);border-radius:15px;cursor:pointer;font-size:15px;font-weight:700;font-family:inherit;transition:all .12s}.q-option:hover:not(:disabled){border-color:var(--purple);background:var(--purple-l)}.q-option.correct{border-color:var(--mint);background:var(--mint-l);color:var(--mint-d)}.q-option.wrong{border-color:var(--coral);background:var(--coral-l);color:var(--coral-d)}.opt-letter{width:26px;height:26px;border-radius:9px;background:var(--surface-soft);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;flex-shrink:0}.feedback{padding:13px 15px;border-radius:15px;margin-bottom:1rem;font-size:14px;font-weight:600;line-height:1.55}.feedback.correct{background:var(--mint-l);color:var(--mint-d)}.feedback.wrong{background:var(--coral-l);color:var(--coral-d)}.quiz-result{text-align:center;padding:2rem 1rem}.result-emoji{font-size:60px;margin-bottom:1rem}.quiz-result h2{font-size:24px;font-weight:800;margin-bottom:.5rem}.result-sub{font-size:15px;color:var(--text-sub);margin-bottom:1.5rem;font-weight:700}.result-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:1.5rem}.rstat{background:var(--surface-soft);border-radius:16px;padding:.9rem .5rem;display:flex;flex-direction:column}.rval{font-size:22px;font-weight:800}.rlbl{font-size:11px;color:var(--text-sub);margin-top:3px;font-weight:700}.quiz-empty{text-align:center;padding:2rem}.quiz-empty p{margin-bottom:1rem;color:var(--text-sub);font-weight:600}@keyframes ppConfetti{0%{transform:translateY(0) rotate(0);opacity:1}to{transform:translateY(-170px) rotate(var(--r));opacity:0}}@keyframes ppPop{0%{transform:scale(1)}40%{transform:scale(1.06)}to{transform:scale(1)}}@keyframes ppShake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}@keyframes ppRise{0%{opacity:0;transform:translateY(14px) scale(.85)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes ppBounce{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.15)}70%{transform:scale(.95)}to{transform:scale(1);opacity:1}}.q-option.pop{animation:ppPop .4s ease}.q-option.shake{animation:ppShake .4s ease}.rise{animation:ppRise .35s ease}.rise-delay{animation:ppRise .4s ease .1s both}.result-bounce{animation:ppBounce .6s cubic-bezier(.34,1.56,.64,1)}.answer-block{margin-top:1rem}.feedback-card{border-radius:16px;padding:14px 16px;display:flex;align-items:center;gap:11px;margin-bottom:12px}.feedback-card.correct{background:var(--mint);justify-content:space-between}.feedback-card.wrong{background:var(--coral)}.feedback-left{display:flex;align-items:center;gap:11px}.feedback-emoji{font-size:26px;flex-shrink:0}.feedback-title{font-size:16px;font-weight:800;color:#fff}.feedback-sub{font-size:13px;font-weight:700;line-height:1.4;margin-top:2px}.feedback-card.correct .feedback-sub{color:#c6eedf}.feedback-card.wrong .feedback-sub{color:#f5c4b3}.feedback-xp{font-size:22px;font-weight:800;color:#fff;flex-shrink:0}.streak-box.missed{background:#ffffff26;color:#f5c4b3b3}.goal-done{margin-top:10px;display:flex;align-items:center;gap:6px;font-size:13px;font-weight:800;color:var(--purple-d)}.goal-done i{font-size:17px}.badge-counter{font-size:13px;font-weight:800;color:var(--text-sub)}.badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:1.5rem}.badge-cell{display:flex;flex-direction:column;align-items:center;text-align:center;padding:12px 6px;border-radius:16px;background:var(--surface);border:2px solid var(--border)}.badge-cell.locked{opacity:.55}.badge-cell-icon{width:40px;height:40px;border-radius:13px;background:var(--surface-soft);color:var(--text-muted);display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:6px}.badge-cell.owned .badge-cell-icon{color:#fff}.badge-cell-name{font-size:10px;font-weight:800;line-height:1.2;color:var(--text-sub)}.badge-cell.owned .badge-cell-name{color:var(--text)}.badge-reveal{margin:0 0 1.25rem;padding:1rem;border-radius:18px;background:var(--amber-l)}.badge-reveal-title{font-size:15px;font-weight:800;color:var(--amber-d);margin-bottom:12px}.badge-reveal-list{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}.badge-reveal-item{display:flex;flex-direction:column;align-items:center;animation:ppBounce .6s cubic-bezier(.34,1.56,.64,1)}.badge-reveal-icon{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;margin-bottom:6px;box-shadow:0 4px 12px color-mix(in srgb,var(--bc) 40%,transparent)}.badge-reveal-name{font-size:13px;font-weight:800;color:var(--text)}.badge-reveal-desc{font-size:11px;font-weight:600;color:var(--text-sub);margin-top:1px}.q-tags{display:flex;align-items:center;gap:8px;margin-bottom:4px;flex-wrap:wrap}.q-complex{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:800;color:var(--amber-d);background:var(--amber-l);padding:3px 9px;border-radius:20px}.q-complex i{font-size:13px}.exam-cta{width:100%;display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,#534ab7,#7f77dd);border:none;border-radius:18px;padding:1rem 1.1rem;margin-bottom:1.5rem;cursor:pointer;font-family:inherit;box-shadow:0 4px #3c3489;transition:transform .1s,box-shadow .1s}.exam-cta:hover{transform:translateY(1px);box-shadow:0 3px #3c3489}.exam-cta:active{transform:translateY(4px);box-shadow:0 0 #3c3489}.exam-cta-left{display:flex;align-items:center;gap:13px}.exam-cta-icon{width:46px;height:46px;border-radius:13px;background:#ffffff38;display:flex;align-items:center;justify-content:center;color:#fff;font-size:25px}.exam-cta-title{font-size:16px;font-weight:800;color:#fff;text-align:left}.exam-cta-sub{font-size:12px;color:#d6d3f5;font-weight:600;text-align:left;margin-top:1px}.exam-cta-arrow{color:#fff;font-size:22px}.exam-setup,.exam-run,.exam-result{max-width:440px;margin:0 auto}.exam-header-row{margin-bottom:1rem}.exam-hero{text-align:center;margin-bottom:1.5rem}.exam-hero-icon{width:64px;height:64px;border-radius:20px;background:var(--purple-l);color:var(--purple-d);display:flex;align-items:center;justify-content:center;font-size:34px;margin:0 auto 1rem}.exam-hero h2{font-size:22px;font-weight:800;margin-bottom:8px}.exam-hero p{font-size:14px;color:var(--text-sub);line-height:1.6;font-weight:600}.exam-presets{display:flex;flex-direction:column;gap:10px;margin-bottom:1.5rem}.exam-preset{display:flex;flex-direction:column;align-items:flex-start;padding:14px 16px;border-radius:16px;background:var(--surface);border:2px solid var(--border);cursor:pointer;font-family:inherit;transition:all .12s}.exam-preset.selected{border-color:var(--purple);background:var(--purple-l)}.exam-preset-label{font-size:15px;font-weight:800}.exam-preset-desc{font-size:13px;color:var(--text-sub);font-weight:600;margin-top:2px}.exam-start{width:100%}.exam-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.exam-progress-text{font-size:13px;font-weight:800;color:var(--text-sub)}.exam-timer{display:flex;align-items:center;gap:5px;font-size:16px;font-weight:800;color:var(--purple-d);background:var(--purple-l);padding:5px 12px;border-radius:20px}.exam-timer.low{color:var(--coral-d);background:var(--coral-l);animation:ppPop .6s ease infinite}.exam-progress-bar{height:8px;background:var(--surface-soft);border-radius:8px;overflow:hidden;margin-bottom:1.25rem}.exam-progress-fill{height:100%;background:var(--purple);border-radius:8px;transition:width .3s}.q-option.chosen{border-color:var(--purple);background:var(--purple-l);color:var(--purple-d)}.exam-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:4px}.exam-answered{font-size:12px;color:var(--text-sub);font-weight:700}.exam-next{padding:12px 20px}.exam-finish-early{display:block;margin:1.25rem auto 0;background:none;border:none;color:var(--text-muted);font-size:13px;font-weight:700;font-family:inherit;cursor:pointer;text-decoration:underline}.exam-result-head{text-align:center;padding:1.5rem 1rem;border-radius:20px;margin-bottom:1.25rem}.exam-result-head.pass{background:var(--mint-l)}.exam-result-head.fail{background:var(--coral-l)}.exam-result-emoji{font-size:52px;margin-bottom:8px;animation:ppBounce .6s cubic-bezier(.34,1.56,.64,1)}.exam-result-head h2{font-size:22px;font-weight:800}.exam-result-head.pass h2{color:var(--mint-d)}.exam-result-head.fail h2{color:var(--coral-d)}.exam-result-grade{font-size:16px;font-weight:800;margin-top:4px;color:var(--text)}.exam-result-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:1.5rem}.exam-review-title{font-size:15px;font-weight:800;margin-bottom:12px}.exam-review-list{display:flex;flex-direction:column;gap:10px;margin-bottom:1.5rem}.exam-review-item{border-radius:14px;padding:12px 14px;background:var(--surface);border:1.5px solid var(--border)}.exam-review-item.ng{border-color:var(--coral);background:var(--coral-l)}.exam-review-item.ok{opacity:.7}.exam-review-head{display:flex;gap:9px;align-items:flex-start}.exam-review-icon{width:22px;height:22px;border-radius:7px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px;color:#fff}.exam-review-icon.ok{background:var(--mint)}.exam-review-icon.ng{background:var(--coral)}.exam-review-q{font-size:13px;font-weight:700;line-height:1.4}.exam-review-answer{margin-top:8px;padding-left:31px}.exam-review-line{font-size:12px;font-weight:700;margin-bottom:3px}.exam-review-line.wrong{color:var(--coral-d)}.exam-review-line.right{color:var(--mint-d)}.exam-review-expl{font-size:12px;color:var(--text-sub);font-weight:600;line-height:1.5;margin-top:4px}.premium-screen{max-width:440px;margin:0 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