.gk-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid transparent;border-radius:14px;padding:13px 18px;font-size:16px;font-weight:800;line-height:1;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:filter .12s ease,background .12s ease,opacity .12s ease;-webkit-user-select:none;user-select:none}.gk-btn:disabled{opacity:.5;pointer-events:none}.gk-btn--primary{background:var(--brand);color:var(--brand-ink)}.gk-btn--primary:active{filter:brightness(.92)}.gk-btn--ok{background:var(--ok);color:#fff}.gk-btn--danger{background:var(--err);color:#fff}.gk-btn--ghost{background:var(--t-fill);color:var(--t-text);border-color:var(--t-border)}.gk-btn--quiet{background:transparent;color:var(--t-muted)}.gk-btn--block{width:100%}.gk-btn--lg{padding:16px 20px;font-size:17px}.gk-iconbtn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;color:var(--t-text2);width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center}.gk-iconbtn:active{background:var(--t-fill)}.gk-chip{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text);border-radius:12px;padding:10px 14px;font-size:17px;font-weight:700;line-height:1;box-shadow:0 2px 0 var(--t-border);transition:transform .08s ease}.gk-chip:active{transform:translateY(1px)}.gk-chip--placed{opacity:.25;pointer-events:none}.gk-chip--ghost{border-style:dashed;color:var(--t-muted);box-shadow:none}.gk-chip--ok{border-color:var(--ok);background:var(--t-okbg)}.gk-chip--err{border-color:var(--err);background:var(--t-errbg)}.gk-tile{min-width:40px;height:46px;padding:0 10px;border-radius:10px;border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text);font-size:20px;font-weight:800;display:inline-flex;align-items:center;justify-content:center}.gk-tile--empty{border-style:dashed;background:transparent;color:transparent}.gk-card{background:var(--t-surface);border:1px solid var(--t-border);border-radius:var(--radius-lg);padding:16px}.gk-spinner{width:26px;height:26px;border-radius:50%;border:3px solid var(--t-border);border-top-color:var(--brand);animation:gk-spin .7s linear infinite}@keyframes gk-spin{to{transform:rotate(360deg)}}.gk-center{flex:1;display:flex;align-items:center;justify-content:center}.gk-field{width:100%;border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text);border-radius:12px;padding:13px 14px;font-size:16px;outline:none}.gk-field:focus{border-color:var(--brand)}.gk-label{font-size:13px;font-weight:700;color:var(--t-muted);margin-bottom:6px;display:block}.gk-error{color:var(--err);font-size:13px;margin-top:6px}.gk-scrim{position:absolute;top:0;right:0;bottom:0;left:0;background:#080a128c;display:flex;flex-direction:column;justify-content:flex-end;z-index:40;animation:gk-fade .15s ease}.gk-sheet{background:var(--t-bg);border-top-left-radius:24px;border-top-right-radius:24px;border-top:1px solid var(--t-border);display:flex;flex-direction:column;min-height:20%;animation:gk-rise .22s cubic-bezier(.2,.8,.3,1);touch-action:none}.gk-sheet-grab-zone{padding:10px 0 6px;display:flex;justify-content:center;cursor:grab}.gk-sheet-grab{width:44px;height:5px;border-radius:3px;background:var(--t-border2)}.gk-sheet-title{font-family:var(--font-disp);font-size:20px;font-weight:800;padding:4px 20px 10px}.gk-sheet-body{padding:6px 18px calc(20px + env(safe-area-inset-bottom));overflow-y:auto}.gk-card-wrap{flex:1;display:flex;flex-direction:column;gap:18px;padding:8px 4px;min-height:0}.gk-prompt{text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}.gk-prompt-el{font-size:30px;font-weight:800;color:var(--t-text)}.gk-prompt-ru{font-size:22px;font-weight:700;color:var(--t-text2)}.gk-prompt-hint{font-size:13px;color:var(--t-muted);font-weight:700;text-transform:uppercase;letter-spacing:.04em}.gk-tr{font-size:15px;color:var(--t-muted)}.gk-speaker{width:68px;height:68px;border-radius:20px;background:var(--brand);color:#fff;border:none;display:inline-flex;align-items:center;justify-content:center}.gk-speaker--big{width:96px;height:96px}.gk-options{display:grid;gap:10px}.gk-option{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text);border-radius:14px;padding:15px 16px;font-size:17px;font-weight:700;text-align:left;display:flex;align-items:center;gap:12px}.gk-option--ok{border-color:var(--ok);background:var(--t-okbg);color:var(--t-text)}.gk-option--err{border-color:var(--err);background:var(--t-errbg)}.gk-answer-area{min-height:56px;border-bottom:2px solid var(--t-border);display:flex;flex-wrap:wrap;gap:8px;padding:8px 2px;align-content:flex-start}.gk-bank{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.gk-flip{min-height:150px;border-radius:var(--radius-lg);border:1.5px solid var(--t-border);background:var(--t-surface);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:20px;cursor:pointer}.gk-rate{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.gk-match{display:grid;grid-template-columns:1fr 1fr;gap:10px}.gk-match-col{display:flex;flex-direction:column;gap:10px}.gk-match-cell{border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text);border-radius:12px;padding:14px 10px;font-size:17px;font-weight:700;text-align:center;display:flex;align-items:center;justify-content:center;gap:8px}.gk-match-cell--sel{border-color:var(--brand);background:var(--t-accenttint)}.gk-match-cell--ok{border-color:var(--ok);background:var(--t-okbg);opacity:.6;pointer-events:none}.gk-match-cell--err{border-color:var(--err);background:var(--t-errbg)}.gk-grammar-line{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;font-size:24px;font-weight:800}.gk-grammar-blank{min-width:60px;border-bottom:3px solid var(--brand);color:var(--brand);text-align:center}.gk-mic{width:96px;height:96px;border-radius:50%;border:none;background:var(--err);color:#fff;display:inline-flex;align-items:center;justify-content:center;align-self:center}.gk-mic--idle{background:var(--brand)}.gk-wavebar{display:inline-flex;gap:3px;height:20px;align-items:center}.gk-wavebar span{width:3px;height:100%;background:currentColor;border-radius:2px;animation:gk-wave .8s ease-in-out infinite}.gk-run{position:absolute;top:0;right:0;bottom:0;left:0;z-index:50;background:var(--t-bg);display:flex;flex-direction:column;padding:calc(10px + env(safe-area-inset-top)) 16px calc(14px + env(safe-area-inset-bottom));animation:gk-fade .15s ease}.gk-run-head{display:flex;align-items:center;gap:10px;padding-bottom:8px}.gk-run-label{text-align:center;font-size:13px;font-weight:800;color:var(--t-muted);text-transform:uppercase;letter-spacing:.05em;padding:4px 0 2px}.gk-run-body{flex:1;display:flex;flex-direction:column;min-height:0;overflow-y:auto}.gk-fb{position:absolute;left:0;right:0;bottom:0;z-index:12;background:var(--t-surface);border-top:1px solid var(--t-border);border-top-left-radius:20px;border-top-right-radius:20px;padding:16px 18px calc(18px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px;animation:gk-rise .2s ease}.gk-fb--ok{background:var(--t-okbg)}.gk-fb--warn{background:var(--t-warnbg)}.gk-fb--err{background:var(--t-errbg)}.gk-fb-row{display:flex;align-items:center;justify-content:space-between;font-size:18px}.gk-fb-report{border:none;background:transparent;color:var(--t-muted);font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:4px}.gk-fb-answer{font-size:18px;font-weight:700;color:var(--t-text2)}.gk-result{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:24px}.gk-result-badge{margin-bottom:6px}.gk-result-title{font-size:28px;font-weight:800;margin:0}.gk-result-sub{color:var(--t-muted);margin:0 0 8px;max-width:280px}.gk-result-stats{display:flex;gap:18px;margin:8px 0 18px}.gk-stat{min-width:84px;background:var(--t-surface);border:1px solid var(--t-border);border-radius:16px;padding:14px}.gk-stat-num{font-size:30px;font-weight:900}.gk-stat-label{font-size:12px;color:var(--t-muted);font-weight:700;text-transform:uppercase}.gk-result-actions{width:100%;max-width:320px;display:flex;flex-direction:column;gap:10px}.gk-shake{animation:gk-shake .4s ease}@keyframes gk-shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.gk-tab-content{flex:1;min-height:0;overflow-y:auto;padding-bottom:8px}.gk-tabbar{display:flex;border-top:1px solid var(--t-border);background:var(--t-surface);padding-bottom:env(safe-area-inset-bottom);flex-shrink:0}.gk-tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 0 7px;color:var(--t-muted);text-decoration:none;font-size:11px;font-weight:800}.gk-tab--active{color:var(--brand)}.gk-page{display:flex;flex-direction:column}.gk-page-head{position:sticky;top:0;z-index:5;background:var(--t-bg);padding:calc(14px + env(safe-area-inset-top)) 18px 10px}.gk-page-title{font-family:var(--font-disp);font-size:26px;font-weight:800;margin:0}.gk-page-body{padding:6px 18px 20px;display:flex;flex-direction:column;gap:12px}.gk-muted{color:var(--t-muted)}.gk-empty{text-align:center;color:var(--t-muted);padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:10px}.gk-auth{justify-content:flex-start;padding:0 24px calc(24px + env(safe-area-inset-bottom));overflow-y:auto}.gk-auth-hero{text-align:center;padding:48px 0 24px}.gk-auth-omega{font-size:64px;font-weight:800;color:var(--brand);line-height:1}.gk-auth-hero h1{font-size:34px;margin:12px 0 4px}.gk-auth-form{display:flex;flex-direction:column;gap:14px}.gk-auth-or{display:flex;align-items:center;text-align:center;color:var(--t-muted);font-size:13px;font-weight:700;gap:10px}.gk-auth-or:before,.gk-auth-or:after{content:"";flex:1;height:1px;background:var(--t-border)}.gk-auth-switch{text-align:center;color:var(--t-muted);font-size:14px}.gk-auth-switch button{border:none;background:none;color:var(--brand);font-weight:800;font-size:14px}.gk-learn-head{display:flex;flex-direction:column;gap:12px}.gk-learn-greet{display:flex;align-items:center;justify-content:space-between}.gk-learn-hi{font-family:var(--font-disp);font-size:22px;font-weight:800}.gk-streak{display:inline-flex;align-items:center;gap:5px;background:var(--t-goldbg);color:var(--gold-strong);border-radius:999px;padding:5px 11px;font-weight:800;font-size:13px}.gk-lesson-block{display:flex;align-items:center;gap:14px;background:var(--t-surface);border:1px solid var(--t-border);border-radius:var(--radius-lg);padding:14px}.gk-lesson-block .meta{flex:1}.gk-lesson-block .lvl{font-size:12px;font-weight:800;color:var(--brand);text-transform:uppercase}.gk-lesson-block .ttl{font-family:var(--font-disp);font-size:18px;font-weight:800}.gk-lesson-block .sub{font-size:13px;color:var(--t-muted)}.gk-unit{border:1px solid var(--t-border);border-radius:var(--radius-lg);overflow:hidden;background:var(--t-surface)}.gk-unit-head{display:flex;align-items:center;gap:10px;padding:14px 16px}.gk-unit-name{flex:1;font-weight:800;font-size:16px}.gk-unit-sub{font-size:12px;color:var(--t-muted);font-weight:700}.gk-step{display:flex;align-items:center;gap:12px;padding:12px 16px;border-top:1px solid var(--t-border);width:100%;background:transparent;border-left:none;border-right:none;border-bottom:none;text-align:left;color:var(--t-text)}.gk-step:disabled{opacity:.55}.gk-step-num{width:30px;height:30px;border-radius:9px;background:var(--t-fill);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;color:var(--t-text2);flex-shrink:0}.gk-step-num--current{background:var(--brand);color:#fff}.gk-step-main{flex:1}.gk-step-kind{font-weight:800;font-size:15px;text-transform:capitalize}.gk-step-status{font-size:12px;color:var(--t-muted)}.gk-hub-actions{display:flex;flex-direction:column;gap:10px}.gk-hub-opt{text-align:left}.gk-hub-opt .t{font-weight:800;font-size:16px}.gk-hub-opt .d{font-size:13px;opacity:.85}.gk-lesson-row{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--t-border);border-radius:14px;background:var(--t-surface);width:100%;color:var(--t-text);text-align:left}.gk-lesson-row:disabled{opacity:.5}.gk-badge-current{background:var(--brand);color:#fff;font-size:11px;font-weight:800;padding:3px 8px;border-radius:999px}.gk-word{position:relative;overflow:hidden;border-radius:14px}.gk-word-inner{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--t-surface);border:1px solid var(--t-border);border-radius:14px;touch-action:pan-y}.gk-word-el{font-weight:800;font-size:17px}.gk-word-tr{font-size:12px;color:var(--t-muted)}.gk-word-lg{flex:1;font-size:14px;color:var(--t-text2)}.gk-word-swipehint{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:space-between;padding:0 18px;font-weight:800;font-size:13px;z-index:0}.gk-word-swipehint .learned{color:var(--ok)}.gk-word-swipehint .reset{color:var(--err)}.gk-words-tools{display:flex;gap:10px;align-items:center}.gk-search{flex:1;position:relative}.gk-search input{padding-left:38px}.gk-search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--t-muted)}.gk-tool-btn{position:relative;width:46px;height:46px;border-radius:12px;border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text2);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.gk-tool-dot{position:absolute;top:8px;right:8px;width:8px;height:8px;border-radius:50%;background:var(--err)}.gk-sticky-cta{position:sticky;bottom:0;padding:10px 0 0;background:linear-gradient(transparent,var(--t-bg) 30%)}.gk-seg-choice{display:flex;gap:8px}.gk-seg-choice button{flex:1;border:1.5px solid var(--t-border);background:var(--t-surface);color:var(--t-text);border-radius:10px;padding:10px;font-weight:800}.gk-seg-choice button.on{border-color:var(--brand);background:var(--t-accenttint);color:var(--brand)}.gk-dual{position:relative;height:44px;padding-top:8px}.gk-dual-track{position:absolute;top:16px;left:0;right:0;height:5px;border-radius:3px;background:var(--t-fill)}.gk-dual-fill{position:absolute;top:16px;height:5px;border-radius:3px;background:var(--brand)}.gk-dual input[type=range]{position:absolute;top:6px;left:0;width:100%;margin:0;background:transparent;pointer-events:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.gk-dual input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:var(--brand);border:3px solid var(--t-surface);pointer-events:auto;cursor:pointer}.gk-dual input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--brand);border:3px solid var(--t-surface);pointer-events:auto;cursor:pointer}.gk-dual-labels{position:absolute;top:26px;left:0;right:0;display:flex;justify-content:space-between;font-size:12px;font-weight:800;color:var(--t-muted)}.gk-profile-id{display:flex;align-items:center;gap:14px}.gk-avatar{width:64px;height:64px;border-radius:50%;background:var(--brand);color:#fff;font-family:var(--font-disp);font-size:28px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}.gk-profile-name{font-family:var(--font-disp);font-size:20px;font-weight:800}.gk-profile-badges{display:flex;align-items:center;gap:8px;margin-top:4px}.gk-stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.gk-stat-grid .gk-stat{min-width:0;padding:12px 6px;text-align:center}.gk-settings{background:var(--t-surface);border:1px solid var(--t-border);border-radius:var(--radius-lg);overflow:hidden}.gk-set-row{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-top:1px solid var(--t-border);font-weight:700;font-size:15px}.gk-set-row:first-child{border-top:none}.gk-set-row--btn{width:100%;background:transparent;border-left:none;border-right:none;color:var(--t-text);text-align:left}.gk-switch{width:46px;height:28px;border-radius:999px;background:var(--t-border2);border:none;position:relative;transition:background .15s ease;flex-shrink:0}.gk-switch--on{background:var(--brand)}.gk-switch-dot{position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .15s ease}.gk-switch--on .gk-switch-dot{transform:translate(18px)}.gk-confirm{background:var(--t-surface);border-top-left-radius:24px;border-top-right-radius:24px;padding:22px 20px calc(22px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px;animation:gk-rise .2s ease}.gk-confirm h3{margin:0;font-size:20px}:root{--t-bg: #f4f5fb;--t-surface: #ffffff;--t-fill: #eef0fe;--t-border: #e2e5f0;--t-border2: #d2d6e4;--t-text: #262a36;--t-text2: #3c4152;--t-muted: #8b91a4;--t-faint: #b3b8c7;--t-accenttint: #eef0fe;--t-okbg: #e6f7f0;--t-errbg: #fdeceb;--t-warnbg: #fdf3e3;--t-goldbg: #fdf3d6;--t-infobg: #eef4ff;--brand: #5b6cf0;--brand-ink: #ffffff;--ok: #24b47e;--ok-strong: #1a9d6b;--err: #f0655f;--err-strong: #e0433c;--gold: #f0a83a;--gold-strong: #e0a400;--warn-ink: #c07d17;--frame-w: min(440px, 100vw);--frame-h: min(940px, 100vh);--radius: 16px;--radius-lg: 22px;--tabbar-h: 64px;--font-body: "Nunito", system-ui, -apple-system, sans-serif;--font-disp: "Baloo 2", "Nunito", sans-serif}[data-gk-theme=dark]{--t-bg: #13151c;--t-surface: #1d212a;--t-fill: #262b35;--t-border: #30353f;--t-border2: #3a4048;--t-text: #eceef4;--t-text2: #c3c8d4;--t-muted: #8a91a2;--t-faint: #565c6b;--t-accenttint: #242a44;--t-okbg: #14312a;--t-errbg: #3a1f1e;--t-warnbg: #332a17;--t-goldbg: #33290f;--t-infobg: #122b3f}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:var(--font-body);color:var(--t-text);background:radial-gradient(120% 100% at 50% 0%,var(--t-accenttint),var(--t-bg));-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}#root{min-height:100vh;display:flex;align-items:center;justify-content:center}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit}.gk-frame{position:relative;width:var(--frame-w);height:var(--frame-h);background:var(--t-bg);color:var(--t-text);overflow:hidden;box-shadow:0 30px 80px #14182d73;border-radius:34px;display:flex;flex-direction:column}@media (max-width: 480px){.gk-frame{border-radius:0;box-shadow:none}}.gk-disp{font-family:var(--font-disp)}.gk-scroll{overflow-y:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin}.gk-scroll::-webkit-scrollbar{width:6px}.gk-scroll::-webkit-scrollbar-thumb{background:var(--t-border2);border-radius:3px}@keyframes gk-rise{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes gk-fade{0%{opacity:0}to{opacity:1}}@keyframes gk-pop{0%{transform:scale(.85);opacity:0}60%{transform:scale(1.04)}to{transform:scale(1);opacity:1}}@keyframes gk-bob{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes gk-wave{0%,to{transform:scaleY(.4)}50%{transform:scaleY(1)}}.gk-anim{will-change:transform}