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;--lightningcss-dark:initial;color-scheme:dark}[data-theme=light]{--bg:#f4f4f1;--text:#0b0d12;--text-muted:#45474d;--accent:#5b54d6;--accent-hover:#4038b8;--on-accent:#fff;--card:#fff;--card-hover:#fafaf7;--border:#0b0d121a;--border-strong:#0b0d122e;--page-outer:var(--bg);--score-excellent:#426600;--score-good:#875000;--score-poor:#ad370b;--recording:#d11f17;--go:#0b0d12;--on-go:#f4f4f1;--voice-ink:#426600;--voice-glow:#7aaa0073;--ref-ink:#2e288f;--seg-on:#fff;--glow-a:#7896ff33;--glow-b:#aaa0ff29;--grain-opacity:.22;--grain-blend:multiply;--vocab-saved:#9a5b00;--vocab-saved-ink:#6b3e00;--vocab-saved-tint:#f59e0b38;--surface-raised:#fff;--text-faint:#595b61;--elev-1:0 .01rem .03rem #0b0d1214;--elev-2:0 .01rem .03rem #0b0d1212, 0 .12rem .28rem -.2rem #0b0d1266;--elev-3:0 .02rem .05rem #0b0d120f, 0 .24rem .5rem -.18rem #0b0d1247;--elev-accent:0 .12rem .3rem -.18rem color-mix(in srgb, var(--go) 40%, transparent);--elev-up-1:0 -.06rem .3rem -.1rem #0b0d1224;--rim:inset 0 .01rem 0 #ffffffe6;--glass-fill:linear-gradient(180deg, #ffffffeb, #ffffffc7);--glass-bg:#ffffffbd;--glass-border:#ffffffa6;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}html{--app-shell-max:5.4rem;--app-fixed-max:5.4rem;--learning-sidebar-width:0rem;--learning-sidebar-offset:0rem;--shelf-card-width:2rem;background-color:var(--bg);color:var(--text);font-size:clamp(85.33px,26.6667vw,100px);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overscroll-behavior-y:none;-webkit-tap-highlight-color:transparent}body{background-color:var(--bg);overscroll-behavior-y:none;min-height:100svh;margin:0;font-size:.14rem}@media (pointer:coarse){input,select,textarea{font-size:max(16px,1em)!important}}#app{background-color:var(--bg);width:100%;min-height:100svh;padding-top:var(--safe-area-top);padding-bottom:var(--safe-area-bottom);flex-direction:column;display:flex;overflow-x:clip}html[data-app-layout=compact] #app,html[data-app-layout=wide] #app{background:radial-gradient(120% 5.4rem at 15% -.8rem, var(--glow-a), transparent 72%) no-repeat, radial-gradient(90% 4.6rem at 95% -1rem, var(--glow-b), transparent 70%) no-repeat, var(--bg)}@media (max-width:768px){html[data-app-layout=compact] .page-nav,html[data-app-layout=wide] .page-nav{padding-inline-end:1.3rem}}html[data-app-layout=workspace]{--app-shell-max:100vw;--app-fixed-max:100vw}html[data-app-layout=wide]{--app-shell-max:10.8rem;--app-fixed-max:10.8rem}html[data-app-layout=reader]{--app-shell-max:100vw;--app-fixed-max:100vw}@media (min-width:769px){html{--shelf-card-width:2.2rem}body{background:var(--page-outer);justify-content:center;display:flex}#app{width:min(100%, var(--app-shell-max));min-height:100svh;box-shadow:0 0 .4rem #00000080}[data-theme=light] #app{box-shadow:none}}button{cursor:pointer;font-family:inherit}:where(button,a,summary,label,[role=button],[role=tab]){touch-action:manipulation;-webkit-touch-callout:none}body:after{content:"";z-index:45;pointer-events:none;opacity:var(--grain-opacity);mix-blend-mode:var(--grain-blend);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");position:fixed;top:0;bottom:0;left:0;right:0}select{min-height:var(--ctl-h-xs);color:var(--text);font:inherit;background-color:var(--surface-sunken);border-radius:var(--r-md);-webkit-appearance:none;appearance:none;cursor:pointer;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a7b0bd' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='m6 9 6 6 6-6'/></svg>");background-position:right .09rem center;background-repeat:no-repeat;background-size:.12rem;border:0;padding-inline-start:.1rem;padding-inline-end:.26rem;font-size:.125rem}[data-theme=light] select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23414b59' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='m6 9 6 6 6-6'/></svg>")}select option,select optgroup{color:var(--text);background-color:var(--surface-raised)}[dir=rtl] select{background-position:.09rem;padding-inline-start:.26rem;padding-inline-end:.1rem}:where(button,a,summary,[tabindex]):focus-visible{outline:var(--focus-ring);outline-offset:var(--focus-offset)}:where(input,textarea,select):focus-visible{box-shadow:var(--focus-ring-soft);outline:0}input,textarea{color:inherit;font-family:inherit}a{color:inherit;text-decoration:none}input,textarea,select{font-size:.16rem}html{--page-dir:1}html[data-page-transition] .learning-mobile-rail{view-transition-name:app-rail}html[data-page-transition] .learning-mobile-tabs{view-transition-name:app-tabs}html[data-page-transition] .standalone-locale{view-transition-name:app-locale}html:-webkit-any(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)){--page-dir:-1}html:is(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)){--page-dir:-1}@keyframes page-enter-from-end{0%{transform:translateX(calc(100% * var(--page-dir)))}}@keyframes page-leave-to-start{to{transform:translateX(calc(-30% * var(--page-dir)))}}@keyframes page-leave-to-end{to{transform:translateX(calc(100% * var(--page-dir)))}}@keyframes page-enter-from-start{0%{transform:translateX(calc(-30% * var(--page-dir)))}}::view-transition-old(root){animation-duration:var(--motion-base);animation-timing-function:var(--ease-out)}::view-transition-new(root){animation-duration:var(--motion-base);animation-timing-function:var(--ease-out)}html[data-page-transition=forward]::view-transition-old(root){animation-name:page-leave-to-start}html[data-page-transition=forward]::view-transition-new(root){animation-name:page-enter-from-end}html[data-page-transition=back]::view-transition-old(root){z-index:1;animation-name:page-leave-to-end}html[data-page-transition=back]::view-transition-new(root){animation-name:page-enter-from-start}html[data-page-transition=fade]::view-transition-old(root){animation-duration:var(--motion-fast)}html[data-page-transition=fade]::view-transition-new(root){animation-duration:var(--motion-fast)}.search-handoff-proxy{opacity:0;pointer-events:none;border:0;width:1px;height:1px;padding:0;font-size:16px;position:fixed;top:0;left:0}[data-modal=backdrop]{animation:modal-fade-in var(--motion-base) var(--ease-out)}[data-modal=sheet]{animation:modal-sheet-in var(--motion-base) var(--ease-out)}[data-modal=pop],[data-modal=auto]{animation:modal-pop-in var(--motion-base) var(--ease-out)}[data-modal-ghost]:not([data-modal]),[data-modal-ghost] :not([data-modal]){transition:none!important;animation:none!important}[data-modal-ghost][data-modal=backdrop],[data-modal-ghost] [data-modal=backdrop]{animation:modal-fade-out var(--motion-fast) var(--ease-out) forwards!important}[data-modal-ghost][data-modal=sheet],[data-modal-ghost] [data-modal=sheet]{animation:modal-sheet-out var(--motion-fast) var(--ease-out) forwards!important}[data-modal-ghost][data-modal=pop],[data-modal-ghost] [data-modal=pop],[data-modal-ghost][data-modal=auto],[data-modal-ghost] [data-modal=auto]{animation:modal-pop-out var(--motion-fast) var(--ease-out) forwards!important}@media (max-width:768px){[data-modal=auto]{animation-name:modal-sheet-in}[data-modal-ghost][data-modal=auto],[data-modal-ghost] [data-modal=auto]{animation-name:modal-sheet-out!important}}@keyframes modal-fade-in{0%{opacity:0}}@keyframes modal-fade-out{to{opacity:0}}@keyframes modal-sheet-in{0%{translate:0 100%}}@keyframes modal-sheet-out{to{translate:0 100%}}@keyframes modal-pop-in{0%{opacity:0;scale:.96}}@keyframes modal-pop-out{to{opacity:0;scale:.96}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}[data-modal-ghost][data-modal],[data-modal-ghost] [data-modal]{animation:none!important}}input::placeholder,textarea::placeholder{color:var(--text-faint);opacity:1}