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[data-testid=notifications-menu]{border-color:color-mix(in oklab, var(--color-border-strong) 55%, var(--color-border))}}html.dark .app-shell [data-testid=notifications-menu]{background:#fff}@supports (color:color-mix(in lab, red, red)){html.dark .app-shell [data-testid=notifications-menu]{background:color-mix(in oklab, var(--color-surface) 92%, #fff 8%)}}html.dark .app-shell [data-testid=notifications-menu]{box-shadow:0 0 0 1px #2a9a8f2e, var(--shadow-overlay)}@supports (color:color-mix(in lab, red, red)){html.dark .app-shell [data-testid=notifications-menu]{box-shadow:0 0 0 1px color-mix(in oklab, var(--color-accent) 18%, transparent), var(--shadow-overlay)}}.app-rail-expand{z-index:30;border:1px solid var(--color-border);background:var(--color-surface);box-shadow:var(--shadow-overlay);animation:motion-page-in .28s var(--ease-entrance) both;margin:0;position:absolute;top:50%;right:.65rem;transform:translateY(-50%)}.app-progress-rail-slot{z-index:1;width:18rem;min-width:0;transition:width .34s var(--ease-entrance), opacity .3s var(--ease-entrance), border-color .3s var(--ease-entrance);flex:none;position:relative;overflow:hidden}.app-progress-rail-slot--collapsed{opacity:0;pointer-events:none;width:0}.app-progress-rail-slot .app-progress-rail{width:18rem;min-width:18rem}@media (prefers-reduced-motion:reduce){.app-progress-rail-slot{transition-duration:.01ms}.app-rail-expand{animation:none}}html.locale-animating .app-shell main,html.locale-animating .app-shell .app-sidebar,html.locale-animating .app-shell .app-crumbs,html.locale-animating .app-shell .app-bottom-nav,html.locale-animating .app-shell .app-progress-rail,html.locale-animating .app-shell .app-top-chrome{animation:locale-soft-cross .36s var(--ease-entrance) both}@keyframes 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.app-bottom-nav{z-index:30;margin:.35rem .5rem calc(.35rem + env(safe-area-inset-bottom,0px));border:1px solid var(--color-border);background:#fffffff0;border-radius:9999px;flex-shrink:0;grid-template-columns:repeat(4,1fr);gap:.25rem;display:none}@supports (color:color-mix(in lab, red, red)){.app-shell .app-bottom-nav{background:color-mix(in oklab, var(--color-surface) 94%, transparent)}}.app-shell .app-bottom-nav{box-shadow:var(--shadow-overlay);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:.35rem}.app-shell .app-bottom-nav a,.app-shell .app-bottom-nav button{min-height:2.75rem;color:var(--color-on-surface-muted);-webkit-tap-highlight-color:transparent;transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance);border-radius:9999px;flex-direction:column;justify-content:center;align-items:center;gap:.15rem;font-size:.65rem;font-weight:600;display:flex;box-shadow:none!important;outline:none!important}.app-shell .app-bottom-nav 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main{padding-bottom:1rem}.app-shell:not(.app-shell--focus) main>.app-stage{padding-bottom:.5rem}.app-shell main:has([data-testid=player-root]){padding-bottom:0}.app-shell:not(.app-shell--focus) main:has([data-testid=player-root])>.app-stage{padding-bottom:0}.app-shell main:has([data-testid=player-root])~.app-bottom-nav{margin-top:.75rem}}@media (width<=1023.98px) and (orientation:landscape){.app-shell .app-bottom-nav{margin:.2rem .4rem calc(.2rem + env(safe-area-inset-bottom,0px));gap:.15rem;padding:.2rem}.app-shell .app-bottom-nav a,.app-shell .app-bottom-nav button{gap:0;min-height:2.35rem;font-size:.58rem}.app-shell .app-crumbs{min-height:2.35rem;font-size:.9375rem}.app-shell main{padding-top:.35rem;padding-bottom:.5rem}[data-testid=player-root] [data-testid=player-actions]{gap:.35rem;padding-top:.35rem}}@media (width<=1023.98px) and (height<=480px){[data-testid=player-root] [data-testid=player-header]{min-height:0}[data-testid=player-root] 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[data-testid=player-nav]>.player-nav-prev{width:9rem;min-width:9rem;max-width:9rem}[data-testid=player-root] [data-testid=player-nav]>.player-nav-next{width:7.5rem;min-width:7.5rem;max-width:7.5rem}[data-testid=player-root] [data-testid=player-lesson-complete]{justify-content:flex-start;gap:0;padding-top:.35rem;padding-bottom:.25rem}[data-testid=player-root] .player-lesson-complete-badge{width:2.5rem;height:2.5rem;font-size:1.125rem}[data-testid=player-root] .player-lesson-complete-ducks{display:none}[data-testid=player-root] [data-testid=player-lesson-complete-stats]{gap:.35rem}[data-testid=player-root] [data-testid=player-lesson-complete-cta]{min-height:2.5rem;margin-top:.5rem}}[data-testid=player-root] [data-testid=player-nav]{justify-content:center;align-items:stretch;gap:.5rem;display:flex}[data-testid=player-root] [data-testid=player-nav]>.player-nav-prev{flex:none!important;width:10rem!important;min-width:10rem!important;max-width:10rem!important}[data-testid=player-root] 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var(--ease-exit)}.app-focus-exit-enter-from,.app-focus-exit-leave-to{opacity:0;transform:translateY(.5rem)scale(.96)}.app-focus-exit-enter-to,.app-focus-exit-leave-from{opacity:1;transform:none}.app-stage--centered{width:100%;max-width:56rem;margin-inline:auto}.app-stage--wide.app-stage--centered{max-width:min(92rem,100%)}.app-shell--focus .app-stage--centered:not(.app-stage--wide){max-width:48rem}@media (prefers-reduced-motion:reduce){.app-focus-veil,.app-focus-exit-enter-active,.app-focus-exit-leave-active{transition-duration:.01ms!important}}@media (width>=1024px){.app-shell-main>main.app-shell-scroll{scrollbar-gutter:stable;padding-inline:1rem}.app-shell-main>main.app-shell-scroll.overflow-hidden{scrollbar-gutter:auto}}.app-sidebar{width:16rem;transition:width .32s var(--ease-entrance);flex:none}.app-shell--sidebar-collapsed .app-sidebar,.app-sidebar--collapsed{width:4.5rem}@media 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player-audio-enter{0%{opacity:0;transform:translateY(.2rem)}to{opacity:1;transform:translateY(0)}}.app-audio-player.player-audio-enter{animation:player-audio-enter .32s var(--ease-entrance) both}@media (prefers-reduced-motion:reduce){.app-audio-player.player-audio-enter{opacity:1;animation:none;transform:none}}@media (width<=1023.98px){html,body,#app,.app-shell,.app-shell *{scrollbar-width:none}html::-webkit-scrollbar{width:0;height:0;display:none}body::-webkit-scrollbar{width:0;height:0;display:none}#app::-webkit-scrollbar{width:0;height:0;display:none}.app-shell::-webkit-scrollbar{width:0;height:0;display:none}.app-shell ::-webkit-scrollbar{width:0;height:0;display:none}}.app-dialog-center{padding:1rem;padding-bottom:max(1rem, env(safe-area-inset-bottom,0px));justify-content:center;align-items:center;display:flex}.app-dialog-center>.motion-overlay-panel,.app-dialog-center>[data-testid=app-search-panel]{width:100%;max-width:28rem;margin-inline:auto}[data-testid=player-root] .player-choice{box-sizing:border-box;box-shadow:none;transition:color .2s var(--ease-entrance), background-color .2s var(--ease-entrance), border-color .2s var(--ease-entrance), box-shadow .2s var(--ease-entrance);border-style:solid;border-width:1px}[data-testid=player-root] .player-choice-idle{border-color:var(--color-border);background:var(--color-surface);color:var(--color-on-surface);box-shadow:none}[data-testid=player-root] .player-choice-selected{border-color:var(--color-border);background:var(--color-surface);color:var(--color-on-surface);box-shadow:inset 3px 0 0 var(--color-accent)}[data-testid=player-root] .player-choice-correct{background:#d2ece4;border-color:#059669}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-choice-correct{background:color-mix(in oklab, var(--color-correct) 18%, var(--color-surface))}}[data-testid=player-root] .player-choice-correct{color:var(--color-on-correct);box-shadow:inset 3px 0 0 var(--color-correct)}[data-testid=player-root] .player-choice-soft{background:#fdefd8;border-color:#d97706}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-choice-soft{background:color-mix(in oklab, #f59e0b 16%, var(--color-surface))}}[data-testid=player-root] .player-choice-soft{color:#78350f;box-shadow:inset 3px 0 #d97706}html.dark [data-testid=player-root] .player-choice-soft{background:#fdeed3;border-color:#fbbf24}@supports (color:color-mix(in lab, red, red)){html.dark [data-testid=player-root] .player-choice-soft{background:color-mix(in oklab, #f59e0b 18%, var(--color-surface))}}html.dark [data-testid=player-root] .player-choice-soft{color:#fef3c7;box-shadow:inset 3px 0 #fbbf24}[data-testid=player-root] .player-blank{transition:background-color .2s var(--ease-entrance), border-color .2s var(--ease-entrance), color .2s var(--ease-entrance);box-shadow:none!important;filter:none!important}[data-testid=player-root] .player-blank-idle{border-color:var(--color-border);background:var(--color-surface);color:var(--color-on-surface)}[data-testid=player-root] .player-blank-correct{background:#d7eee7;border-color:#059669}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-blank-correct{background:color-mix(in oklab, var(--color-correct) 16%, var(--color-surface))}}[data-testid=player-root] .player-blank-correct{color:var(--color-on-correct)}[data-testid=player-root] .player-blank-soft{background:#fef1dd;border-color:#d97706}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-blank-soft{background:color-mix(in oklab, #f59e0b 14%, var(--color-surface))}}[data-testid=player-root] .player-blank-soft{color:#78350f}html.dark [data-testid=player-root] .player-blank-soft{background:#fdefd8;border-color:#fbbf24}@supports (color:color-mix(in lab, red, red)){html.dark [data-testid=player-root] .player-blank-soft{background:color-mix(in oklab, #f59e0b 16%, var(--color-surface))}}html.dark [data-testid=player-root] .player-blank-soft{color:#fef3c7}[data-testid=player-root] .player-blank-wrong{background:#fde9e9!important;border-color:#ef4444!important}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-blank-wrong{background:color-mix(in oklab, #ef4444 12%, var(--color-surface))!important}}[data-testid=player-root] .player-blank-wrong{color:#7f1d1d!important;box-shadow:none!important}[data-testid=player-root] .player-blank-sentence{width:100%;min-width:0}[data-testid=player-root] .player-blank-footer-note{transform-origin:top}.player-blank-note-enter-active,.player-blank-note-leave-active{transition:opacity .22s var(--ease-entrance), transform .22s var(--ease-entrance)}.player-blank-note-enter-from,.player-blank-note-leave-to{opacity:0;transform:translateY(.4rem)}html.dark [data-testid=player-root] .player-blank-footer-note--soft{color:#fcd34d}[data-testid=player-root] .player-choice-wrong{background:#fae1e1;border-width:1px;border-color:#dc2626}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-choice-wrong{background:color-mix(in oklab, var(--color-incorrect) 14%, var(--color-surface))}}[data-testid=player-root] .player-choice-wrong{color:var(--color-on-incorrect);box-shadow:inset 2px 0 #dc2626}[data-testid=player-root] .player-blank-line-hint--soft{color:#92400e}html.dark [data-testid=player-root] .player-blank-line-hint--soft{color:#fcd34d}[data-testid=player-root] .player-blank-line-hint--fix{color:var(--color-on-incorrect)}[data-testid=player-root] .player-mark-slot{flex-shrink:0;place-items:center;width:1.35rem;height:1.35rem;display:inline-grid}[data-testid=player-root] .player-practice-block+.player-practice-block{border-top:1px solid #d0ddd8cc;margin-top:.35rem;padding-top:1rem}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-practice-block+.player-practice-block{border-top:1px solid color-mix(in oklab, var(--color-border) 80%, transparent)}}.progress-scale{width:100%;min-width:0;display:block}.progress-scale-track{background:#dee8e4;border-radius:9999px;width:100%;height:.85rem;position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.progress-scale-track{background:color-mix(in oklab, var(--color-border) 55%, var(--color-surface-muted))}}.progress-scale-fill{border-radius:inherit;background:linear-gradient(90deg, #2a9a8fbf, var(--color-accent));min-width:0;height:100%}@supports (color:color-mix(in lab, red, red)){.progress-scale-fill{background:linear-gradient(90deg, color-mix(in oklab, var(--color-accent) 75%, transparent), var(--color-accent))}}.progress-scale-fill{transition:width .42s var(--ease-entrance)}.progress-scale-meta{color:var(--color-on-surface-muted);justify-content:space-between;align-items:baseline;gap:.5rem;margin-top:.4rem;font-size:.75rem;font-weight:600;display:flex}.progress-scale-meta strong{color:var(--color-on-surface);font-size:.875rem}[data-testid=player-root] .player-mark-ok,[data-testid=player-root] .player-mark-bad,[data-testid=player-root] .player-mark-pick{border-radius:9999px;place-items:center;width:1.35rem;height:1.35rem;font-size:.75rem;font-weight:700;display:inline-grid}[data-testid=player-root] .player-mark-ok{background:var(--color-correct);color:#fff}[data-testid=player-root] .player-mark-bad{background:var(--color-incorrect);color:#fff}[data-testid=player-root] .player-mark-pick{box-sizing:border-box;opacity:0;background:0 0;border:0}[data-testid=player-root] .player-example-block{border:1px solid #d0ddd8cc;border-radius:.65rem;margin-top:.5rem;margin-bottom:.75rem;padding:.65rem .85rem}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-example-block{border:1px solid color-mix(in oklab, var(--color-border) 80%, transparent)}}[data-testid=player-root] .player-example-block{background:#f3f9f7}@supports (color:color-mix(in lab, red, red)){[data-testid=player-root] .player-example-block{background:color-mix(in oklab, var(--color-surface-muted) 70%, var(--color-surface))}}[data-testid=player-root] .player-example-block{color:var(--color-on-surface)}[data-testid=player-root] .player-example-block>p{margin-bottom:.35rem}[data-testid=player-root] .player-example-block>p:last-child{margin-bottom:0}[data-testid=player-root] .player-example-label{letter-spacing:.04em;text-transform:uppercase;color:var(--color-on-surface-muted);font-size:.75rem;font-weight:650;margin-bottom:.45rem!important}[data-testid=player-root] .player-example-hint{color:var(--color-on-surface-muted);font-size:.875rem;font-weight:550;margin-top:.55rem!important;margin-bottom:0!important}.player-feedback-aura{--halo-correct:oklab(70.3753% -.122901 -.00537139/.52);--halo-incorrect:oklab(63.6834% .187864 .0889286/.42);--halo-ink:var(--halo-correct)}@supports (color:color-mix(in lab, red, red)){.player-feedback-aura{--halo-ink:color-mix(in oklab, var(--halo-correct) calc(var(--halo-share,1) * 100%), var(--halo-incorrect))}}.player-feedback-aura{z-index:80;pointer-events:none;opacity:0;animation:1.05s ease-in-out both player-aura-life;position:fixed;inset:0;overflow:hidden}.player-feedback-aura:before{content:"";pointer-events:none;background:linear-gradient(to bottom, var(--halo-ink) 0%, transparent 100%) top / 100% 7% no-repeat, linear-gradient(to top, var(--halo-ink) 0%, transparent 100%) bottom / 100% 7% no-repeat, linear-gradient(to right, var(--halo-ink) 0%, transparent 100%) left / 4.5% 100% no-repeat, linear-gradient(to left, var(--halo-ink) 0%, transparent 100%) right / 4.5% 100% no-repeat;box-shadow:inset 0 0 16px 4px var(--halo-ink), inset 0 0 32px 8px var(--halo-ink);position:absolute;inset:0}@supports (color:color-mix(in lab, red, red)){.player-feedback-aura:before{box-shadow:inset 0 0 16px 4px color-mix(in oklab, var(--halo-ink) 42%, transparent), inset 0 0 32px 8px color-mix(in oklab, var(--halo-ink) 18%, transparent)}}.player-feedback-aura:before{animation:1.05s ease-in-out both player-aura-pulse}.player-feedback-aura[data-tone=incorrect]{animation-duration:1s}.player-feedback-aura[data-tone=incorrect]:before{--halo-ink:var(--halo-incorrect);background:linear-gradient(to bottom, var(--halo-ink) 0%, transparent 100%) top / 100% 6% no-repeat, linear-gradient(to top, var(--halo-ink) 0%, transparent 100%) bottom / 100% 6% no-repeat, linear-gradient(to right, var(--halo-ink) 0%, transparent 100%) left / 4% 100% no-repeat, linear-gradient(to left, var(--halo-ink) 0%, transparent 100%) right / 4% 100% no-repeat;box-shadow:inset 0 0 14px 3px var(--halo-ink), inset 0 0 26px 6px var(--halo-ink);animation-duration:1s}@supports (color:color-mix(in lab, red, red)){.player-feedback-aura[data-tone=incorrect]:before{box-shadow:inset 0 0 14px 3px color-mix(in oklab, var(--halo-ink) 38%, transparent), inset 0 0 26px 6px color-mix(in oklab, var(--halo-ink) 16%, transparent)}}.player-html .player-theory-sheet{text-align:left;margin-top:.25rem}.player-html .player-theory-sheet .player-theory-ex{color:var(--color-on-surface);margin:0 0 .65rem;font-size:1.05rem;line-height:1.5;display:block}@media (width>=640px){.player-html .player-theory-sheet .player-theory-ex{font-size:1.125rem;line-height:1.5}}.player-html .player-theory-sheet .player-theory-ex em{font-style:italic;font-weight:500}.player-html .player-theory-sheet .player-theory-rule{color:var(--color-on-surface);margin:.85rem 0 .55rem;font-size:1rem;line-height:1.5}.player-html .player-theory-sheet .player-theory-rule-lead{margin:.75rem 0 .4rem;font-size:1rem;line-height:1.45}.player-html .player-theory-sheet .player-theory-list{margin:.35rem 0 0;padding-left:1.35rem}.player-html .player-theory-sheet .player-theory-list li{margin-bottom:.55rem;font-size:1rem;line-height:1.5}.player-html .player-theory-sheet .player-theory-list em{font-style:italic}.player-html .player-theory-table-wrap{overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;scrollbar-width:none;width:100%;max-width:100%;margin-top:.65rem;overflow-x:auto}.player-html .player-theory-table-wrap::-webkit-scrollbar{height:0;display:none}.player-html .player-theory-table{border-collapse:collapse;text-align:left;width:100%;min-width:18rem;font-size:.92rem;line-height:1.4}.player-html .player-theory-table th,.player-html .player-theory-table td{border-bottom:1px solid #d0ddd8d9;padding:.4rem .55rem}@supports (color:color-mix(in lab, red, red)){.player-html .player-theory-table th,.player-html .player-theory-table td{border-bottom:1px solid color-mix(in oklab, var(--color-border) 85%, transparent)}}.player-html .player-theory-table th,.player-html .player-theory-table td{vertical-align:top;word-break:break-word}.player-html .player-theory-table th{color:var(--color-on-surface);background:#eef6f3cc;font-weight:650}@supports (color:color-mix(in lab, red, red)){.player-html .player-theory-table th{background:color-mix(in oklab, var(--color-surface-muted) 80%, transparent)}}.player-html .player-theory-table td{color:var(--color-on-surface)}@media (width<=639px){.player-html .player-theory-table{min-width:0;font-size:.82rem;line-height:1.35}.player-html .player-theory-table th,.player-html .player-theory-table td{padding:.35rem .4rem}}.player-html .player-theory-examples{margin-bottom:.75rem;line-height:1.55}.player-html .player-theory-fr{color:var(--color-on-surface-muted);font-size:.92em}.player-html ul{margin:.5rem 0 0;padding-left:1.15rem}.player-html li{margin-bottom:.35rem}@keyframes player-aura-life{0%{opacity:0}14%{opacity:1}68%{opacity:1}to{opacity:0}}@keyframes player-aura-pulse{0%,to{opacity:.5}45%{opacity:.72}}@keyframes player-audio-nudge{0%,to{box-shadow:0 0 0 0 color-mix(in srgb, var(--color-accent) 0%, transparent);background-color:#0000}30%{background-color:color-mix(in srgb, var(--color-accent) 14%, transparent);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-accent) 45%, transparent)}60%{background-color:color-mix(in srgb, var(--color-accent) 8%, transparent);box-shadow:0 0 0 6px color-mix(in srgb, var(--color-accent) 0%, transparent)}}.app-audio-player.player-audio-nudge{animation:player-audio-nudge .65s var(--ease-entrance) 2;border-radius:.5rem}@media (prefers-reduced-motion:reduce){.app-audio-player.player-audio-nudge{background-color:#2a9a8f1f;animation:none}@supports (color:color-mix(in lab, red, red)){.app-audio-player.player-audio-nudge{background-color:color-mix(in srgb, var(--color-accent) 12%, transparent)}}.app-audio-player.player-audio-nudge{box-shadow:0 0 0 2px #2a9a8f8c}@supports (color:color-mix(in lab, red, red)){.app-audio-player.player-audio-nudge{box-shadow:0 0 0 2px color-mix(in srgb, var(--color-accent) 55%, transparent)}}}.player-lesson-complete{isolation:isolate;position:relative}[data-testid=player-scroll]:has(.player-dialogue-chat)>[data-testid=player-current-slot]{flex:1 0 auto;min-height:100%}[data-testid=player-current-slot]:has(.player-dialogue-chat)>div{flex:auto;min-height:0}[data-testid=player-current-slot]:has(.player-dialogue-chat)>div>div:has(.player-dialogue-chat){flex-direction:column;flex:auto;min-height:0;display:flex}[data-testid=player-current-slot]:has(.player-dialogue-chat)>div>div:has(.player-dialogue-chat)>div{flex-direction:column;flex:auto;min-height:0;display:flex}[data-testid=player-exercise-rich_text]:has(.player-dialogue-chat){flex-direction:column;flex:auto;min-height:0;display:flex}[data-testid=player-exercise-drag_text]:has(.player-dialogue-chat){flex-direction:column;flex:auto;min-height:0;display:flex}.player-dialogue-chat{flex:auto;min-height:12rem}.player-lesson-complete-edge{pointer-events:none;z-index:25;border-radius:0;animation:2.4s ease-in-out infinite alternate player-complete-edge;position:fixed;box-shadow:inset 0 0 0 3px oklab(84.5186% -.125508 .0336809/.7),inset 0 0 42px 12px oklab(87.1163% -.122941 .0587736/.55)}@keyframes player-complete-edge{0%{opacity:.72}to{opacity:1}}.player-lesson-complete-badge{--complete-glow:oklab(84.5186% -.125508 .0336809/.75);isolation:isolate;color:#fff;box-shadow:0 0 0 3px oklab(90.4941% -.0860852 .0244407/.8), 0 0 22px 6px var(--complete-glow);animation:player-complete-badge 2.2s var(--ease-entrance) infinite alternate;background:linear-gradient(145deg,#6ee7b7,#34d399 55%,#10b981);position:relative;overflow:visible}.player-lesson-complete-badge:before{content:"";opacity:.85;animation:player-complete-halo-breathe 2.4s var(--ease-entrance) infinite alternate;z-index:-1;pointer-events:none;background:radial-gradient(circle,oklab(87.1163% -.122941 .0587736/.55) 0%,#0000 70%);border-radius:9999px;position:absolute;inset:-10%}.player-lesson-complete-badge:after{content:"";border-radius:inherit;opacity:.55;z-index:0;pointer-events:none;background:linear-gradient(125deg,#0000 30%,oklab(100% 0 5.96046e-8/.4) 48%,#0000 66%) 0 0/220% 220%;animation:6s ease-in-out infinite player-complete-flow;position:absolute;inset:0}@keyframes player-complete-badge{0%{transform:scale(1);box-shadow:0 0 0 3px oklab(90.4941% -.0860852 .0244407/.7),0 0 16px 4px oklab(84.5186% -.125508 .0336809/.65)}to{transform:scale(1.04);box-shadow:0 0 0 3px oklab(95.0457% -.0485366 .014792/.85),0 0 28px 8px oklab(87.1163% -.122941 .0587736/.7)}}@keyframes player-complete-halo-breathe{0%{opacity:.55;transform:scale(.96)}to{opacity:.95;transform:scale(1.06)}}@keyframes player-complete-flow{0%{background-position:0 40%}50%{background-position:100% 60%}to{background-position:0 40%}}@media (prefers-reduced-motion:reduce){.player-lesson-complete-badge,.player-lesson-complete-badge:before,.player-lesson-complete-badge:after,.player-lesson-complete-edge{animation:none}.player-lesson-complete-badge{transform:none}.player-feedback-aura,.player-feedback-aura:before,.player-feedback-aura:after{animation:none}.player-feedback-aura{opacity:.65}.player-feedback-aura:before{opacity:.6}.player-blank-note-enter-active,.player-blank-note-leave-active{transition:none}}[data-testid=player-root] .player-tick-enter-active,[data-testid=player-root] .player-tick-leave-active{transition:opacity .32s var(--ease-entrance), transform .32s var(--ease-entrance)}[data-testid=player-root] .player-tick-enter-from{opacity:0;transform:translateY(.25rem)scale(.92)}[data-testid=player-root] .player-tick-leave-to{opacity:0;transform:translateY(-.25rem)scale(.92)}@media (prefers-reduced-motion:reduce){[data-testid=player-root] .player-tick-enter-active,[data-testid=player-root] .player-tick-leave-active{transition-duration:1ms}[data-testid=player-root] .player-tick-enter-from,[data-testid=player-root] .player-tick-leave-to{transform:none}}@media (width<=1023.98px){.app-shell .app-bottom-nav{display:grid}.app-shell:not(.app-shell--focus) .app-shell-main{padding-bottom:0}}.app-menu-panel.app-search-shake{animation:vl-search-shake .42s var(--ease-entrance)}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.motion-page{animation:none!important}}@property --vl-surface{syntax:"<color>";inherits:true;initial-value:#fff}@property --vl-surface-muted{syntax:"<color>";inherits:true;initial-value:#eef8f4}@property --vl-on-surface{syntax:"<color>";inherits:true;initial-value:#0c2f2b}@property --vl-on-surface-muted{syntax:"<color>";inherits:true;initial-value:#4a6b62}@property --vl-border{syntax:"<color>";inherits:true;initial-value:#c5ddd4}@property --vl-accent{syntax:"<color>";inherits:true;initial-value:#2a9a8f}.visual-lab{--color-surface:var(--vl-surface);--color-surface-muted:var(--vl-surface-muted);--color-on-surface:var(--vl-on-surface);--color-on-surface-muted:var(--vl-on-surface-muted);--color-border:var(--vl-border);--color-accent:var(--vl-accent);--color-brand:var(--vl-accent);--font-lab:"Inter", ui-sans-serif, system-ui, sans-serif, "Segoe UI", "Noto Sans";isolation:isolate;color:var(--color-on-surface);background-color:var(--vl-surface-muted);border-radius:var(--radius-card);font-family:var(--font-lab);transition:--vl-surface .32s var(--ease-entrance), --vl-surface-muted .32s var(--ease-entrance), --vl-on-surface .32s var(--ease-entrance), --vl-on-surface-muted .32s var(--ease-entrance), --vl-border .32s var(--ease-entrance), --vl-accent .32s var(--ease-entrance), background-color .32s var(--ease-entrance), color .32s var(--ease-entrance), box-shadow .32s var(--ease-entrance);padding:1rem;position:relative;overflow:hidden}.visual-lab:before{content:"";z-index:0;pointer-events:none;background-image:var(--vl-wash-image);opacity:1;will-change:background-position;background-position:40% 20%;background-repeat:no-repeat;background-size:120% 120%;animation:36s ease-in-out infinite alternate vl-wash-drift;position:absolute;inset:-12%}.visual-lab>*{z-index:1;position:relative}@keyframes vl-wash-drift{0%{background-position:22% 18%}to{background-position:78% 42%}}@media (prefers-reduced-motion:reduce){.visual-lab:before{background-position:40% 25%;animation:none}}.visual-lab :where(.ui-card,.btn-primary,.btn-secondary,.chrome-icon,.badge-demo,.badge-open,.badge-locked,.vl-chip,.vl-tab,.vl-inset,.vl-ghost,.vl-score,.vl-segment,.vl-segment>button,.vl-filter,.vl-step-dot,.vl-tip,.vl-bottom-nav,.vl-bottom-nav button,.vl-course-media,.vl-drawer-panel,.vl-field,.vl-select,.vl-check,.vl-radio,.vl-dialog,.vl-nav-item,.vl-tree-row,button,a,input,textarea,select,label,p,h1,h2,h3,h4,span,li,article,section,nav,aside,header,div){transition-property:color,background-color,border-color,box-shadow,fill,stroke,opacity;transition-duration:.28s;transition-timing-function:var(--ease-entrance)}@media (prefers-reduced-motion:reduce){.visual-lab,.visual-lab :where(*){transition-duration:.01ms!important}}.visual-lab :is(button,a,input,textarea,select):focus,.visual-lab :is(button,a,input,textarea,select):focus-visible{outline:none}.visual-lab--phone{overscroll-behavior:contain;scrollbar-width:none;flex-direction:column;min-height:40rem;max-height:min(70dvh,44rem);display:flex;position:relative;overflow:hidden;box-shadow:0 0 0 1px #0f172a14,0 24px 48px -24px #0f172a59}.visual-lab--phone::-webkit-scrollbar{width:0;height:0;display:none}.visual-lab--phone ::-webkit-scrollbar{width:0;height:0;display:none}.visual-lab--phone,.visual-lab--phone *{scrollbar-width:none}.visual-lab .vl-ex-card{border:1px solid #d0ddd8d9}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-ex-card{border:1px solid color-mix(in oklab, var(--color-border) 85%, transparent)}}.visual-lab[data-visual-theme=dark] .vl-ex-card{border-color:#2a9a8f8c}@supports (color:color-mix(in lab, red, red)){.visual-lab[data-visual-theme=dark] .vl-ex-card{border-color:color-mix(in oklab, var(--color-border-strong) 55%, transparent)}}.visual-lab .vl-content{max-width:28rem;margin-inline:auto}.visual-lab[data-visual-viewport=desktop] .vl-content{max-width:36rem}.visual-lab[data-visual-viewport=desktop] .vl-wide{max-width:48rem;margin-inline:auto}.visual-lab .vl-display{font-family:var(--font-lab);letter-spacing:-.025em;font-synthesis:none;font-weight:600;line-height:1.25}.visual-lab .vl-prose{font-family:var(--font-lab);font-synthesis:none;line-height:1.7}.visual-lab .vl-prose-grammar{line-height:1.85}.visual-lab .vl-active-word{background:#05966938;border-radius:.25rem}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-active-word{background:color-mix(in oklab, var(--color-correct) 22%, transparent)}}.visual-lab .vl-active-word{-webkit-box-decoration-break:clone;box-decoration-break:clone;padding:.05rem .15rem}.visual-lab .vl-audio-hit{min-width:2.75rem;min-height:2.75rem;color:var(--color-accent);background:#2a9a8f1a;border-radius:9999px;justify-content:center;align-items:center;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-audio-hit{background:color-mix(in oklab, var(--color-accent) 10%, transparent)}}.visual-lab-sandbox{flex-direction:column;gap:1.5rem;display:flex}.visual-lab .vl-section{flex-direction:column;gap:.85rem;display:flex}.visual-lab .vl-section-title{margin:0}.visual-lab .vl-chrome-bar{align-items:center;gap:.15rem;height:3.5rem;padding-inline:.5rem;display:flex}.visual-lab .vl-chrome-end{align-items:center;gap:.1rem;display:flex}.visual-lab[data-visual-viewport=mobile] .vl-chrome-bar{gap:0;padding-inline:.2rem .1rem}.visual-lab[data-visual-viewport=mobile] .vl-chrome-end{gap:0;margin-inline-end:-.1rem}.visual-lab[data-visual-viewport=mobile] .vl-chrome-end .chrome-icon{width:2.5rem;height:2.5rem}.visual-lab[data-visual-viewport=mobile] .vl-chrome-end .chrome-icon span.h-9{width:2rem;height:2rem}@keyframes vl-search-shake{0%,to{transform:translate(0);box-shadow:0 18px 40px -18px #0f172a47}20%{transform:translate(-3px)}40%{box-shadow:0 0 0 2px color-mix(in oklab, var(--color-incorrect) 45%, transparent);transform:translate(3px)}60%{transform:translate(-2px)}80%{transform:translate(2px)}}.visual-lab .vl-search-panel.vl-shake{animation:vl-search-shake .42s var(--ease-entrance)}.visual-lab .vl-focus-on .vl-bottom-nav,.visual-lab.vl-focus-mode .vl-bottom-nav{display:none}.visual-lab .vl-chip{min-height:2rem;transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance);border-radius:9999px;align-items:center;gap:.35rem;padding:.25rem .75rem;font-size:.75rem;font-weight:600;display:inline-flex}.visual-lab .vl-chip-accent{background:#2a9a8f24}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-chip-accent{background:color-mix(in oklab, var(--color-accent) 14%, transparent)}}.visual-lab .vl-chip-accent{color:var(--color-accent)}.visual-lab .vl-chip-solid{background:var(--color-accent);color:var(--color-on-accent)}.visual-lab .vl-tab{min-height:2.75rem;color:var(--color-on-surface-muted);transition:color .2s var(--ease-entrance);padding:.5rem .85rem;font-size:.875rem;font-weight:500;position:relative}.visual-lab .vl-tab-active{color:var(--color-accent);font-weight:600}.visual-lab .vl-tab-active:after{content:"";background:var(--color-accent);border-radius:9999px;height:.2rem;position:absolute;bottom:0;left:.5rem;right:.5rem}.visual-lab .vl-inset{border-radius:var(--radius-control);background:#e8f1ee}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-inset{background:color-mix(in oklab, var(--color-surface-muted) 80%, var(--color-border))}}.visual-lab .vl-inset{box-shadow:inset 2px 2px 6px #0f172a14,inset -2px -2px 6px #ffffff8c}.visual-lab[data-visual-theme=dark] .vl-inset{box-shadow:inset 2px 2px 8px #00000073,inset -1px -1px 4px #ffffff0a}.visual-lab .vl-ring{flex-shrink:0;width:3.25rem;height:3.25rem;position:relative}.visual-lab .vl-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.visual-lab .vl-ring-track,.visual-lab .vl-ring-value{fill:none;stroke-width:2.5px}.visual-lab .vl-ring-track{stroke:#d0ddd8d9}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-ring-track{stroke:color-mix(in oklab, var(--color-border) 85%, transparent)}}.visual-lab .vl-ring-value{stroke:var(--color-accent);stroke-linecap:round;transition:stroke-dasharray .28s var(--ease-entrance)}.visual-lab .vl-ring>span{color:var(--color-on-surface);place-items:center;font-size:.7rem;font-weight:700;display:grid;position:absolute;inset:0}.visual-lab .vl-bar{background:#d0ddd8cc;border-radius:9999px;height:.35rem;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-bar{background:color-mix(in oklab, var(--color-border) 80%, transparent)}}.visual-lab .vl-bar>span{border-radius:inherit;background:var(--color-accent);height:100%;transition:width .28s var(--ease-entrance);display:block}.visual-lab .vl-ghost{border-radius:var(--radius-control);min-height:2.75rem;color:var(--color-accent);transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance);justify-content:center;align-items:center;padding:0 .9rem;font-size:.875rem;font-weight:500;display:inline-flex}.visual-lab .vl-ghost:hover{background:#2a9a8f1a}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-ghost:hover{background:color-mix(in oklab, var(--color-accent) 10%, transparent)}}.visual-lab .vl-score{border-radius:var(--radius-control);letter-spacing:.02em;min-height:2rem;color:var(--color-on-surface);background:#b3dad5;align-items:center;padding:.2rem .55rem;font-size:.7rem;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-score{background:color-mix(in oklab, var(--color-surface-muted) 70%, var(--color-accent))}}.visual-lab .vl-segment{border-radius:var(--radius-control);background:#eaf2ef;grid-template-columns:1fr 1fr;gap:.2rem;max-width:16rem;padding:.2rem;display:grid}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-segment{background:color-mix(in oklab, var(--color-surface-muted) 85%, var(--color-border))}}.visual-lab .vl-segment>button{border-radius:calc(var(--radius-control) - .1rem);min-height:2.25rem;color:var(--color-on-surface-muted);transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance), box-shadow .2s var(--ease-entrance);font-size:.8rem;font-weight:500}.visual-lab .vl-segment-active{background:var(--color-surface);color:var(--color-on-surface);font-weight:600;box-shadow:0 1px 2px #0f172a14}.visual-lab .vl-filter{min-height:2.25rem;color:var(--color-on-surface-muted);background:0 0;border-radius:9999px;align-items:center;padding:.25rem .85rem;font-size:.75rem;font-weight:600;display:inline-flex;box-shadow:inset 0 0 0 1px #d0ddd8e6}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-filter{box-shadow:inset 0 0 0 1px color-mix(in oklab, var(--color-border) 90%, transparent)}}.visual-lab .vl-filter{transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance), box-shadow .2s var(--ease-entrance)}.visual-lab .vl-filter-active{color:var(--color-on-accent);background:var(--color-accent);box-shadow:none}.visual-lab .vl-steps{align-items:center;gap:.35rem;margin:0;padding:0;list-style:none;display:flex}.visual-lab .vl-steps>li{align-items:center;gap:.35rem;display:flex}.visual-lab .vl-steps>li:not(:last-child):after{content:"";background:#d0ddd8e6;border-radius:9999px;width:1.25rem;height:2px}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-steps>li:not(:last-child):after{background:color-mix(in oklab, var(--color-border) 90%, transparent)}}.visual-lab .vl-steps>li.vl-step-done:after{background:var(--color-accent)}.visual-lab .vl-step-dot{width:1.75rem;height:1.75rem;color:var(--color-on-surface-muted);background:#e8f1ee;border-radius:9999px;place-items:center;font-size:.7rem;font-weight:700;display:grid}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-step-dot{background:color-mix(in oklab, var(--color-surface-muted) 80%, var(--color-border))}}.visual-lab .vl-step-dot{transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance)}.visual-lab .vl-step-done .vl-step-dot{color:var(--color-on-accent);background:var(--color-accent)}.visual-lab .vl-step-current .vl-step-dot{color:var(--color-accent);background:#2a9a8f29}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-step-current .vl-step-dot{background:color-mix(in oklab, var(--color-accent) 16%, transparent)}}.visual-lab .vl-step-current .vl-step-dot{box-shadow:0 0 0 2px #2a9a8f59}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-step-current .vl-step-dot{box-shadow:0 0 0 2px color-mix(in oklab, var(--color-accent) 35%, transparent)}}.visual-lab .vl-tip{border-radius:var(--radius-control);color:var(--color-on-surface);background:#eef7f6;margin:0;padding:.65rem .85rem;font-size:.8rem;line-height:1.4}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-tip{background:color-mix(in oklab, var(--color-accent) 8%, var(--color-surface))}}.visual-lab .vl-tip{border-left:3px solid var(--color-accent)}.visual-lab .vl-field{border-radius:var(--radius-control);border:1px solid var(--color-border);background:var(--color-surface);width:100%;min-height:2.75rem;color:var(--color-on-surface);padding:.5rem .75rem;font-size:.875rem;display:block}.visual-lab .vl-field::placeholder{color:var(--color-on-surface-muted)}.visual-lab .vl-select{appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--color-on-surface-muted) 50%), linear-gradient(135deg, var(--color-on-surface-muted) 50%, transparent 50%);background-position:calc(100% - 1.1rem) 1.15rem,calc(100% - .75rem) 1.15rem;background-repeat:no-repeat;background-size:.35rem .35rem,.35rem .35rem;padding-right:2.25rem}.visual-lab .vl-check,.visual-lab .vl-radio{min-height:2.75rem;color:var(--color-on-surface);align-items:center;gap:.65rem;font-size:.875rem;display:flex}.visual-lab .vl-dialog{border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-overlay);padding:1rem}.visual-lab .vl-nav-item{border-radius:var(--radius-control);min-height:2.75rem;color:var(--color-on-surface-muted);border-left:2px solid #0000;align-items:center;gap:.5rem;padding:0 .75rem;font-size:.875rem;font-weight:500;display:flex}.visual-lab .vl-nav-item-active{border-left-color:var(--color-accent);background:#2a9a8f1f}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-nav-item-active{background:color-mix(in oklab, var(--color-accent) 12%, transparent)}}.visual-lab .vl-nav-item-active{color:var(--color-accent);font-weight:600}.visual-lab .vl-tree-row{border-radius:var(--radius-control);min-height:2.75rem;color:var(--color-on-surface);align-items:center;gap:.5rem;padding:.35rem .65rem;font-size:.875rem;display:flex}.visual-lab .vl-tree-row:hover{background:#2a9a8f14}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-tree-row:hover{background:color-mix(in oklab, var(--color-accent) 8%, transparent)}}.visual-lab .vl-choice{box-sizing:border-box;border:1px solid var(--color-border);box-shadow:none;transition:color .2s var(--ease-entrance), background-color .2s var(--ease-entrance), border-color .2s var(--ease-entrance), box-shadow .2s var(--ease-entrance)}.visual-lab .vl-choice--compact{vertical-align:baseline;min-height:0;padding:.25rem .5rem;display:inline-flex}.visual-lab .vl-choice-idle{border-color:var(--color-border);background:var(--color-surface);color:var(--color-on-surface);box-shadow:none}.visual-lab .vl-choice-selected{border-color:var(--color-border);background:var(--color-surface);color:var(--color-on-surface);box-shadow:inset 3px 0 0 var(--color-accent)}.visual-lab .vl-choice-selected:focus-visible,.visual-lab .vl-choice-idle:focus-visible{box-shadow:inset 3px 0 0 var(--color-accent)}.visual-lab .vl-choice-correct{border-color:var(--color-correct);background:#d7eee7}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-choice-correct{background:color-mix(in oklab, var(--color-correct) 16%, var(--color-surface))}}.visual-lab .vl-choice-correct{color:var(--color-on-correct);box-shadow:inset 3px 0 0 var(--color-correct)}.visual-lab .vl-choice-wrong{border-color:var(--color-incorrect);background:#fbe5e5}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-choice-wrong{background:color-mix(in oklab, var(--color-incorrect) 12%, var(--color-surface))}}.visual-lab .vl-choice-wrong{color:var(--color-on-incorrect);box-shadow:inset 3px 0 0 var(--color-incorrect)}.visual-lab .vl-mark-slot{flex-shrink:0;place-items:center;width:1.35rem;height:1.35rem;display:inline-grid}.visual-lab .vl-mark-ok,.visual-lab .vl-mark-bad,.visual-lab .vl-mark-pick{border-radius:9999px;place-items:center;width:1.35rem;height:1.35rem;font-size:.75rem;font-weight:700;display:inline-grid}.visual-lab .vl-mark-ok{background:var(--color-correct);color:#fff}.visual-lab .vl-mark-bad{background:var(--color-incorrect);color:#fff}.visual-lab .vl-mark-pick{box-sizing:border-box;opacity:0;background:0 0;border:0}.visual-lab .vl-celebrate{color:var(--color-on-correct);background:#05966924}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-celebrate{background:color-mix(in oklab, var(--color-correct) 14%, transparent)}}.visual-lab .vl-celebrate{border-radius:var(--radius-control);padding:.5rem .75rem}.visual-lab .vl-chip-xp{color:#5b21b6;background:oklab(54.1337% .0963843 -.226968/.16)}.visual-lab[data-visual-kit=night] .vl-chip-xp{color:#ddd6fe;background:oklab(70.8969% .0635732 -.145921/.22)}.visual-lab .vl-chip-streak{color:#b45309;background:oklab(76.8591% .0560995 .154808/.2)}.visual-lab[data-visual-kit=night] .vl-chip-streak{color:#fde68a;background:oklab(83.6861% .0159629 .163645/.22)}.visual-lab .vl-search-panel--float{width:min(22rem,100% - 1rem);position:absolute;top:4.25rem;left:auto;right:.5rem}.visual-lab .vl-search-panel--sheet,.visual-lab .vl-profile-sheet{width:auto;position:absolute;bottom:4.75rem;left:.5rem;right:.5rem}.visual-lab .vl-menu-panel{background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-overlay);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.visual-lab[data-visual-kit=night] .vl-menu-panel{background:#1c2640;border-color:#b5c3ca}@supports (color:color-mix(in lab, red, red)){.visual-lab[data-visual-kit=night] .vl-menu-panel{border-color:color-mix(in oklab, var(--color-border) 55%, #94a3b8 45%)}}.visual-lab .vl-crumbs{min-height:2.75rem;color:var(--color-on-surface-muted);align-items:center;gap:.35rem;padding:.35rem .15rem;font-size:.75rem;font-weight:500;display:flex}.visual-lab .vl-crumbs-current{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--color-on-surface);font-weight:600;overflow:hidden}.visual-lab .vl-crumbs-sep{opacity:.55;flex-shrink:0}.visual-lab .vl-bottom-nav{z-index:36;border:1px solid var(--color-border);background:#fffffff0;border-radius:9999px;grid-template-columns:repeat(4,1fr);gap:.25rem;display:grid;position:sticky;bottom:.25rem}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-bottom-nav{background:color-mix(in oklab, var(--color-surface) 94%, transparent)}}.visual-lab .vl-bottom-nav{box-shadow:var(--shadow-overlay);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:.35rem}.visual-lab[data-visual-kit=night] .vl-bottom-nav{background:#1c2640;border-color:#b5c3ca}@supports (color:color-mix(in lab, red, red)){.visual-lab[data-visual-kit=night] .vl-bottom-nav{border-color:color-mix(in oklab, var(--color-border) 55%, #94a3b8 45%)}}.visual-lab .vl-bottom-nav button{min-height:2.75rem;color:var(--color-on-surface-muted);transition:background-color .2s var(--ease-entrance), color .2s var(--ease-entrance);border-radius:9999px;flex-direction:column;justify-content:center;align-items:center;gap:.15rem;font-size:.65rem;font-weight:600;display:flex}.visual-lab--phone .visual-lab-sandbox{flex-direction:column;flex:1;min-height:0;padding-bottom:0;display:flex;position:relative}.visual-lab--phone .vl-scroll-region{overscroll-behavior:contain;scrollbar-width:none;flex:1;min-height:0;overflow:hidden auto}.visual-lab--phone .vl-scroll-region::-webkit-scrollbar{width:0;height:0;display:none}.visual-lab--phone .vl-search-panel--sheet,.visual-lab--phone .vl-profile-sheet{width:auto;position:absolute;bottom:4.75rem;left:.5rem;right:.5rem}.visual-lab--phone [data-testid=visual-lab-search-dismiss]{position:absolute;inset:0}.visual-lab--phone .vl-bottom-nav{z-index:36;flex-shrink:0;margin:.35rem .25rem .25rem;position:relative;bottom:auto}.visual-lab[data-visual-viewport=mobile] .vl-wide{padding-bottom:.25rem}.visual-lab .vl-course-media{border-radius:calc(var(--radius-card) - .15rem);background:linear-gradient(135deg,#196a63,#1ab1a0);height:6.5rem}@supports (color:color-mix(in lab, red, red)){.visual-lab .vl-course-media{background:linear-gradient(135deg, color-mix(in oklab, var(--color-accent) 55%, #042f2e), color-mix(in oklab, var(--color-accent) 25%, #14b8a6))}}.visual-lab[data-visual-kit=mint-fuse-haze]{--vl-surface:#fff;--vl-surface-muted:#eef6f3;--vl-on-surface:#0c2f2b;--vl-on-surface-muted:#4a6b62;--vl-border:#d0ddd8;--vl-accent:#2a9a8f;--color-surface:var(--vl-surface);--color-surface-muted:var(--vl-surface-muted);--color-on-surface:var(--vl-on-surface);--color-on-surface-muted:var(--vl-on-surface-muted);--color-border:var(--vl-border);--color-border-strong:#2a9a8f;--color-accent:var(--vl-accent);--color-accent-emphasis:#1f7a72;--color-on-accent:#fff;--color-ring:#5ecfc3;--color-correct:#059669;--color-on-correct:#064e3b;--color-incorrect:#dc2626;--color-on-incorrect:#7f1d1d;--color-brand:var(--vl-accent);--color-brand-700:#1f7a72;--color-badge-demo:#ccfbf1;--color-on-badge-demo:#115e59;--color-badge-open:#d1fae5;--color-on-badge-open:#065f46;--color-badge-locked:#dbe3ea;--color-on-badge-locked:#334155;--color-overlay:#0c2f2b66;--radius-control:.5rem;--radius-card:.9rem;--radius-sheet:1.15rem;--shadow-card:0 1px 2px #0f172a08, 0 14px 28px -16px #2a9a8f38;--vl-wash-image:radial-gradient(ellipse 78% 56% at 0% -8%, #2dd4bfad, transparent 58%), radial-gradient(ellipse 66% 50% at 100% -2%, #6ee7b794, transparent 54%), radial-gradient(ellipse 60% 44% at 48% 110%, #2a9a8f47, transparent 56%), linear-gradient(180deg, #2a9a8f33, transparent 12.5rem)}.visual-lab[data-visual-kit=mint-fuse-mist]{--color-surface:#fbfffd;--color-surface-muted:#f2faf7;--color-on-surface:#163532;--color-on-surface-muted:#56756d;--color-border:#d3e6df;--color-border-strong:#3aafa3;--color-accent:#3aafa3;--color-accent-emphasis:#2a9a8f;--color-on-accent:#fff;--color-ring:#7dd8ce;--color-correct:#14b8a6;--color-on-correct:#115e59;--color-incorrect:#d45a5a;--color-on-incorrect:#7f1d1d;--color-brand:#3aafa3;--color-brand-700:#2a9a8f;--color-badge-demo:#e6fffa;--color-on-badge-demo:#0f766e;--color-badge-open:#ecfdf5;--color-on-badge-open:#065f46;--color-badge-locked:#e8eef4;--color-on-badge-locked:#475569;--radius-control:.7rem;--radius-card:1.1rem;--radius-sheet:1.4rem;--shadow-card:0 1px 2px #0f172a08, 0 16px 32px -18px #3aafa338;background:radial-gradient(ellipse 90% 55% at 0% 0%, #7dd8ce61, transparent 54%), radial-gradient(ellipse 70% 48% at 100% 0%, #bbf7d066, transparent 50%), radial-gradient(ellipse 50% 38% at 50% 100%, #2a9a8f1f, transparent 55%), var(--color-surface-muted)}.visual-lab[data-visual-kit=mint-fuse-edge]{--color-surface:#fff;--color-surface-muted:#eef7f3;--color-on-surface:#0a2c28;--color-on-surface-muted:#45665e;--color-border:#bfd8cf;--color-border-strong:#1f7a72;--color-accent:#1f7a72;--color-accent-emphasis:#155e57;--color-on-accent:#fff;--color-ring:#4dbdb2;--color-correct:#0f766e;--color-on-correct:#115e59;--color-incorrect:#b91c1c;--color-on-incorrect:#7f1d1d;--color-brand:#1f7a72;--color-brand-700:#155e57;--color-badge-demo:#b2f5ea;--color-on-badge-demo:#134e4a;--color-badge-open:#a7f3d0;--color-on-badge-open:#064e3b;--color-badge-locked:#cbd5e1;--color-on-badge-locked:#1e293b;--radius-control:.4rem;--radius-card:.8rem;--radius-sheet:1.05rem;--shadow-card:0 10px 26px -14px #1f7a724d, 0 2px 5px #0f172a0a;background:radial-gradient(ellipse 58% 42% at 100% -6%, #4dbdb25c, transparent 52%), linear-gradient(155deg, #1f7a7229 0%, transparent 40%), radial-gradient(ellipse 42% 32% at 0% 40%, #a7f3d038, transparent 50%), var(--color-surface-muted)}.visual-lab[data-visual-kit=night]{--vl-surface:#141b2d;--vl-surface-muted:#0a101c;--vl-on-surface:#f1f5f9;--vl-on-surface-muted:#94a3b8;--vl-border:#243044;--vl-accent:#7b9cff;--color-surface:var(--vl-surface);--color-surface-muted:var(--vl-surface-muted);--color-on-surface:var(--vl-on-surface);--color-on-surface-muted:var(--vl-on-surface-muted);--color-border:var(--vl-border);--color-border-strong:#64748b;--color-accent:var(--vl-accent);--color-accent-emphasis:#a5b8ff;--color-on-accent:#0a101c;--color-ring:#93c5fd;--color-correct:#34d399;--color-on-correct:#ecfdf5;--color-incorrect:#f87171;--color-on-incorrect:#fecaca;--color-brand:var(--vl-accent);--color-brand-700:#a5b8ff;--color-badge-demo:#0c4a6e;--color-on-badge-demo:#e0f2fe;--color-badge-open:#064e3b;--color-on-badge-open:#d1fae5;--color-badge-locked:#334155;--color-on-badge-locked:#e2e8f0;--color-overlay:#02061799;--radius-control:.5rem;--radius-card:.9rem;--radius-sheet:1.15rem;--shadow-card:0 0 0 1px #ffffff12, 0 18px 40px -20px #678af466;--shadow-overlay:0 24px 48px -20px #000000a6;--vl-wash-image:radial-gradient(ellipse 80% 56% at 50% -10%, #7b9cffa3, transparent 56%), radial-gradient(ellipse 56% 46% at 100% 6%, #2dd4bf57, transparent 52%), radial-gradient(ellipse 54% 44% at 0% 26%, #1e466b94, transparent 54%), linear-gradient(180deg, #7b9cff3d, transparent 13rem)}.visual-lab[data-visual-theme=dark][data-visual-variant=mint-fuse-mist]{--radius-control:.7rem;--radius-card:1.1rem;--radius-sheet:1.4rem}.visual-lab[data-visual-theme=dark][data-visual-variant=mint-fuse-edge]{--radius-control:.4rem;--radius-card:.8rem;--radius-sheet:1.05rem}.visual-lab .vl-drawer-enter-active,.visual-lab .vl-drawer-leave-active{transition:opacity .24s var(--ease-entrance)}.visual-lab .vl-drawer-enter-active .vl-drawer-panel,.visual-lab .vl-drawer-leave-active .vl-drawer-panel{transition:transform .28s var(--ease-entrance)}.visual-lab .vl-drawer-leave-active,.visual-lab .vl-drawer-leave-active .vl-drawer-panel{transition-timing-function:var(--ease-exit);transition-duration:.2s}.visual-lab .vl-drawer-enter-from,.visual-lab .vl-drawer-leave-to{opacity:0}.visual-lab .vl-drawer-enter-from .vl-drawer-panel,.visual-lab .vl-drawer-leave-to .vl-drawer-panel{transform:translate(-.75rem)}.visual-lab .vl-float-enter-active,.visual-lab .vl-float-leave-active{transition:opacity .22s var(--ease-entrance), transform .22s var(--ease-entrance)}.visual-lab .vl-float-leave-active{transition-duration:.18s;transition-timing-function:var(--ease-exit)}.visual-lab .vl-float-enter-from,.visual-lab .vl-float-leave-to{opacity:0;transform:translateY(-.35rem)scale(.98)}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-scroll-snap-strictness{syntax:"*";inherits:false;initial-value:proximity}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-divide-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-leading{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@keyframes ping{75%,to{opacity:0;transform:scale(2)}}