:root{--primary: #11C2B6;--primary-dark: color-mix(in srgb, var(--primary), #000 18%);--primary-darker: color-mix(in srgb, var(--primary), #000 33%);--primary-light: color-mix(in srgb, var(--primary), #fff 34%);--primary-tint: color-mix(in srgb, var(--primary) 16%, var(--surface));--gold: #FFC233;--gold-dark: #E9A714;--flame: #FF7A3D;--flame-dark: #F0561C;--again: #FF5B6E;--again-dark: #E23A4E;--hard: #FF9F1C;--hard-dark: #E2820A;--good: #2BC48A;--good-dark: #16A471;--easy: #3FA9F5;--easy-dark: #1E86D6;--success: #2BC48A;--warning: #FF9F1C;--error: #FF5B6E;--st-new: #3FA9F5;--st-learning: #FF9F1C;--st-review: #2BC48A;--bg: #F3F6F8;--bg-2: #E9EFF2;--surface: #FFFFFF;--surface-2: #F7FAFB;--border: #E5ECF0;--border-2: #D6E0E6;--text: #20303D;--text-soft: #46586A;--text-muted: #8294A2;--text-faint: #AEBdC8;--on-primary: #FFFFFF;--shadow-color: 200 25% 55%;--r-xs: 8px;--r-sm: 12px;--r-md: 16px;--r-lg: 22px;--r-xl: 28px;--r-2xl: 36px;--r-pill: 999px;--r-scale: 1;--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 20px;--s-6: 24px;--s-7: 32px;--s-8: 40px;--s-9: 56px;--font: "Nunito", system-ui, -apple-system, sans-serif;--fs-display: 40px;--fs-h1: 30px;--fs-h2: 24px;--fs-h3: 20px;--fs-body: 17px;--fs-sm: 15px;--fs-caption: 13px;--fs-stat: 56px;--shadow-sm: 0 2px 8px -2px hsl(var(--shadow-color) / .25);--shadow-md: 0 8px 24px -8px hsl(var(--shadow-color) / .35);--shadow-lg: 0 18px 44px -16px hsl(var(--shadow-color) / .45);--shadow-card: 0 12px 30px -12px hsl(var(--shadow-color) / .4);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--ease-out: cubic-bezier(.22, 1, .36, 1)}[data-theme=dark]{--bg: #0F1620;--bg-2: #0A1019;--surface: #19222E;--surface-2: #202B38;--border: #2A3744;--border-2: #364554;--text: #EEF3F7;--text-soft: #BFCCD8;--text-muted:#8090A0;--text-faint:#5C6B7A;--on-primary:#06201E;--primary: #19D3C6;--again: #FF6B7C;--again-dark: #C9304380;--hard: #FFAB36;--hard-dark: #B96E0980;--good: #34D29A;--good-dark: #138A5F80;--easy: #54B5F7;--easy-dark: #176FB880;--shadow-color: 210 60% 3%;--shadow-sm: 0 2px 10px -2px hsl(var(--shadow-color) / .55);--shadow-md: 0 10px 28px -8px hsl(var(--shadow-color) / .65);--shadow-lg: 0 20px 48px -16px hsl(var(--shadow-color) / .75);--shadow-card: 0 14px 34px -12px hsl(var(--shadow-color) / .7)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0}body{font-family:var(--font);color:var(--text);background:var(--bg);font-weight:600;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}.t-display{font-size:var(--fs-display);font-weight:800;line-height:1.05;letter-spacing:-.02em}.t-h1{font-size:var(--fs-h1);font-weight:800;line-height:1.1;letter-spacing:-.015em}.t-h2{font-size:var(--fs-h2);font-weight:800;line-height:1.15;letter-spacing:-.01em}.t-h3{font-size:var(--fs-h3);font-weight:700;line-height:1.2}.t-body{font-size:var(--fs-body);font-weight:600;line-height:1.45}.t-sm{font-size:var(--fs-sm);font-weight:600;line-height:1.4}.t-caption{font-size:var(--fs-caption);font-weight:700;letter-spacing:.04em;text-transform:uppercase}.t-stat{font-size:var(--fs-stat);font-weight:800;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}.muted{color:var(--text-muted)}.soft{color:var(--text-soft)}.btn{--btn-bg: var(--primary);--btn-shadow: var(--primary-dark);--btn-fg: var(--on-primary);display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);font-weight:800;font-size:var(--fs-body);padding:16px 24px;border-radius:calc(var(--r-lg) * var(--r-scale));background:var(--btn-bg);color:var(--btn-fg);box-shadow:0 5px 0 0 var(--btn-shadow),var(--shadow-sm);transition:transform .07s var(--ease-out),box-shadow .07s var(--ease-out),filter .15s;user-select:none;line-height:1;white-space:nowrap}.btn:hover{filter:brightness(1.04)}.btn:active{transform:translateY(5px);box-shadow:0 0 0 0 var(--btn-shadow)}.btn--block{display:flex;width:100%}.btn--lg{padding:20px 28px;font-size:19px;border-radius:calc(var(--r-xl) * var(--r-scale))}.btn--secondary{--btn-bg: var(--surface);--btn-shadow: var(--border-2);--btn-fg: var(--primary-dark);border:2px solid var(--border-2)}[data-theme=dark] .btn--secondary{--btn-fg: var(--primary)}.btn--ghost{background:transparent;box-shadow:none;color:var(--text-soft);font-weight:700}.btn--ghost:active{transform:none}.btn--gold{--btn-bg: var(--gold);--btn-shadow: var(--gold-dark);--btn-fg: #5A3D00}.grades{display:grid;grid-template-columns:1fr 1fr;gap:var(--s-3)}.grade{--gb: var(--good);--gs: var(--good-dark);display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 8px 13px;border-radius:calc(var(--r-md) * var(--r-scale));background:var(--gb);color:#fff;box-shadow:0 5px 0 0 var(--gs);transition:transform .07s var(--ease-out),box-shadow .07s var(--ease-out)}.grade:active{transform:translateY(5px);box-shadow:0 0 0 0 var(--gs)}.grade .g-label{font-weight:800;font-size:17px}.grade .g-when{font-weight:700;font-size:12px;opacity:.85}.grade--again{--gb: var(--again);--gs: var(--again-dark)}.grade--hard{--gb: var(--hard);--gs: var(--hard-dark)}.grade--good{--gb: var(--good);--gs: var(--good-dark)}.grade--easy{--gb: var(--easy);--gs: var(--easy-dark)}[data-theme=dark] .grade{color:#fff}.card{background:var(--surface);border-radius:calc(var(--r-lg) * var(--r-scale));box-shadow:var(--shadow-sm);border:1px solid var(--border)}.tile{background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--r-md) * var(--r-scale));padding:var(--s-4)}.chip{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--r-pill);background:var(--surface);border:2px solid var(--border-2);font-weight:700;font-size:var(--fs-sm);color:var(--text-soft);transition:.15s}.chip--active{background:var(--primary-tint);border-color:var(--primary);color:var(--primary-darker)}[data-theme=dark] .chip--active{color:var(--primary-light)}.chip--lg{padding:14px 18px;font-size:var(--fs-body)}.bar{height:12px;background:var(--bg-2);border-radius:var(--r-pill);overflow:hidden}.bar>i{display:block;height:100%;background:var(--primary);border-radius:inherit;transition:width .5s var(--ease-out)}.bar--gold>i{background:var(--gold)}.streak{display:inline-flex;align-items:center;gap:7px;padding:8px 14px 8px 11px;border-radius:var(--r-pill);background:linear-gradient(135deg,var(--flame),var(--gold));color:#fff;font-weight:800;box-shadow:var(--shadow-sm)}.streak .num{font-size:18px}.dot{width:10px;height:10px;border-radius:50%;flex:none}.dot--new{background:var(--st-new)}.dot--learning{background:var(--st-learning)}.dot--review{background:var(--st-review)}.nav{display:grid;grid-template-columns:repeat(4,1fr);background:var(--surface);border-top:1px solid var(--border);padding:8px 6px calc(8px + env(safe-area-inset-bottom))}.nav button{display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 0;color:var(--text-faint);font-weight:700;font-size:11px;border-radius:var(--r-sm);transition:color .15s}.nav button.active{color:var(--primary)}.nav .ic{width:26px;height:26px}.toast{display:flex;align-items:center;gap:10px;padding:14px 18px;border-radius:var(--r-md);background:var(--text);color:var(--bg);font-weight:700;box-shadow:var(--shadow-md)}.toast--success{background:var(--success);color:#06281c}.sheet{background:var(--surface);border-radius:var(--r-2xl) var(--r-2xl) 0 0;box-shadow:var(--shadow-lg);padding:var(--s-6)}.sheet .grab{width:44px;height:5px;border-radius:999px;background:var(--border-2);margin:0 auto var(--s-4)}.audio{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:var(--primary-tint);color:var(--primary-dark);box-shadow:0 4px 0 0 var(--border-2);transition:transform .07s var(--ease-out),box-shadow .07s var(--ease-out)}[data-theme=dark] .audio{color:var(--primary-light);box-shadow:0 4px 0 0 var(--border)}.audio:active{transform:translateY(4px);box-shadow:0 0 0 0 var(--border-2)}.ring-wrap{position:relative;display:grid;place-items:center}.ring{transform:rotate(-90deg)}.ring .track{stroke:var(--bg-2)}.ring .ind{stroke:var(--primary);stroke-linecap:round;transition:stroke-dashoffset .8s var(--ease-out)}body{background:radial-gradient(120% 80% at 50% -10%,color-mix(in srgb,var(--primary) 16%,var(--bg)),var(--bg) 60%)}[data-theme=dark] body{background:radial-gradient(120% 80% at 50% -10%,color-mix(in srgb,var(--primary) 9%,var(--bg-2)),var(--bg-2) 60%)}.app{position:fixed;width:100%;max-width:480px;inset:0 0 0 50%;transform:translate(-50%);background:var(--bg);overflow:hidden;box-shadow:var(--shadow-lg)}.tg-head{position:absolute;top:env(safe-area-inset-top,0);left:0;right:0;height:44px;z-index:35;display:flex;align-items:center;justify-content:center;color:var(--text);font-weight:800;font-size:16px;background:color-mix(in srgb,var(--surface) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.tg-head .tg-close,.tg-head .tg-more{position:absolute;top:50%;transform:translateY(-50%);width:30px;height:30px;display:grid;place-items:center;color:var(--text-soft);border-radius:50%}.tg-head .tg-close{left:16px}.tg-head .tg-more{right:16px}.tg-head .ic{width:20px;height:20px}.screens{position:absolute;inset:0}.screen{position:absolute;inset:0;display:none;flex-direction:column;opacity:0}.screen.active{display:flex;animation:scr-in .32s var(--ease-out);opacity:1}@keyframes scr-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:calc(56px + env(safe-area-inset-top)) 20px 24px}.scroll.no-head{padding-top:calc(16px + env(safe-area-inset-top))}.scroll.has-nav{padding-bottom:16px}.scroll::-webkit-scrollbar{width:0}.screen>.nav{flex:none;border-radius:0}.home-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s-5)}.home-hello{display:flex;align-items:center;gap:12px}.avatar{width:46px;height:46px;border-radius:50%;background:var(--primary-tint);display:grid;place-items:center;overflow:hidden}.ring-card{display:flex;flex-direction:column;align-items:center;gap:var(--s-3);padding:var(--s-6) var(--s-5);margin-bottom:var(--s-4)}.ring-center{position:absolute;inset:0;display:grid;place-content:center;text-align:center}.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s-3);margin-bottom:var(--s-4)}.stat-row .tile{display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;padding:14px 8px}.stat-row .ic{width:24px;height:24px}.rev-head{padding:calc(12px + env(safe-area-inset-top)) 20px 0}.rev-bar-row{display:flex;align-items:center;gap:12px}.flash-area{flex:1;display:grid;place-items:center;padding:16px 20px;perspective:1400px}.flash{position:relative;width:100%;max-width:320px;aspect-ratio:3/4.05;transform-style:preserve-3d;transition:transform .55s var(--ease-spring);cursor:pointer}.flash.flipped{transform:rotateY(180deg)}.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--r-2xl) * var(--r-scale));box-shadow:var(--shadow-card);display:flex;flex-direction:column;padding:28px 24px}.face--back{transform:rotateY(180deg)}.flash-tag{align-self:flex-start}.flash-word{font-size:40px;font-weight:800;letter-spacing:-.02em;line-height:1.05}.flash-ipa{font-size:20px;font-weight:700;color:var(--text-muted);font-family:Nunito}.flash-hint{margin-top:auto;align-self:center;color:var(--text-faint);font-weight:700;font-size:14px;display:flex;align-items:center;gap:6px;white-space:nowrap}.flash-hint .ic{width:15px;height:15px}.g-when{white-space:nowrap}.example{padding:14px 16px;border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--border)}.example b{color:var(--primary-dark);font-weight:800}[data-theme=dark] .example b{color:var(--primary-light)}.rev-foot{padding:12px 20px calc(20px + env(safe-area-inset-bottom))}.complete-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:80px 28px 28px;gap:var(--s-3);position:relative}.reward-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--s-3);width:100%;margin:var(--s-4) 0}.reward{display:flex;flex-direction:column;align-items:center;gap:4px;padding:18px 8px}.reward .ic{width:26px;height:26px}.search{display:flex;align-items:center;gap:10px;padding:13px 16px;background:var(--surface);border:2px solid var(--border-2);border-radius:var(--r-pill);color:var(--text-muted);font-weight:600;margin-bottom:var(--s-3)}.search .ic{width:20px;height:20px;flex:none}.filter-row{display:flex;gap:8px;margin-bottom:var(--s-4);overflow-x:auto;padding-bottom:2px}.filter-row::-webkit-scrollbar{height:0}.filter-row .chip{flex:none;padding:8px 15px;font-size:14px}.deck-list{display:flex;flex-direction:column;gap:10px}.row-card{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md)}.row-card .meta{flex:1;min-width:0}.row-card .w{font-weight:800;font-size:17px}.row-card .tr{color:var(--text-muted);font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.row-card .ipa{color:var(--text-faint);font-weight:600;font-size:13px}.detail-hero{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:var(--s-6);margin-bottom:var(--s-4)}.kv{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-bottom:1px solid var(--border);font-weight:700}.kv:last-child{border-bottom:none}.kv .k{color:var(--text-muted)}.heat{display:grid;grid-template-columns:repeat(13,1fr);gap:5px}.heat i{aspect-ratio:1;border-radius:4px;background:var(--bg-2)}.heat i[data-l="1"]{background:color-mix(in srgb,var(--primary) 30%,var(--bg-2))}.heat i[data-l="2"]{background:color-mix(in srgb,var(--primary) 55%,var(--bg-2))}.heat i[data-l="3"]{background:color-mix(in srgb,var(--primary) 78%,var(--surface))}.heat i[data-l="4"]{background:var(--primary)}.bars{display:flex;align-items:flex-end;gap:8px;height:120px}.bars i{flex:1;background:var(--primary);border-radius:6px 6px 0 0;min-height:6px;transition:height .6s var(--ease-out)}.bars i:nth-child(7n){background:var(--gold)}.empty-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 36px;gap:var(--s-4)}.confetti{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:50}.confetti i{position:absolute;top:-14px;width:10px;height:14px;border-radius:2px;animation:fall linear forwards}@keyframes fall{to{transform:translateY(900px) rotate(720deg);opacity:.9}}.sec-label{display:flex;align-items:center;justify-content:space-between;margin:var(--s-5) 2px var(--s-3)}.no-mascot .mascot,.no-mascot .avatar{display:none}.home-cta{flex:none;padding:10px 20px 12px}.screen[data-screen=home] .scroll{display:flex;flex-direction:column}.home-content{margin:auto 0;display:flex;flex-direction:column;width:100%}@media(max-height:720px){.ring-wrap,.ring-card .ring{width:150px!important;height:150px!important}.ring-center .t-stat{font-size:38px!important}.ring-card{padding:16px 20px 18px;gap:8px;margin-bottom:12px}.home-top{margin-bottom:12px}.stat-row .tile{padding:12px 8px}}.in-telegram .tg-head{display:none}.in-telegram .scroll,.in-telegram .scroll.no-head{padding-top:calc(12px + var(--tg-top, env(safe-area-inset-top, 0px)))}.in-telegram .rev-head{padding-top:calc(8px + var(--tg-top, env(safe-area-inset-top, 0px)))}.in-telegram .complete-wrap,.in-telegram .empty-wrap{padding-top:calc(24px + var(--tg-top, 0px))}.in-telegram .nav{padding-bottom:calc(8px + var(--tg-bottom, env(safe-area-inset-bottom, 0px)))}.tg-switch{position:relative;width:50px;height:30px;flex:none}.tg-switch input{display:none}.tg-switch span{position:absolute;inset:0;background:var(--border-2);border-radius:999px;transition:.2s}.tg-switch span:after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 2px 4px #0003}.tg-switch input:checked+span{background:var(--primary)}.tg-switch input:checked+span:after{transform:translate(20px)}