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.QuickSignInConnections-module__axeJ4G__connections{z-index:14;width:100%;height:100%;color:color-mix(in srgb, var(--brand-default) 70%, var(--text-tertiary));opacity:0;pointer-events:none;transition:opacity .18s;position:fixed;inset:0;overflow:visible}.QuickSignInConnections-module__axeJ4G__connections[data-connected=true]{opacity:.7;transition-delay:.24s}.QuickSignInConnections-module__axeJ4G__connections[data-enabled=false]{opacity:0;transition:none}.QuickSignInConnections-module__axeJ4G__path{fill:none;stroke:currentColor;stroke-width:1.75px;stroke-linecap:round;stroke-dasharray:.1 7}.QuickSignInConnections-module__axeJ4G__dot{fill:currentColor}@media (prefers-reduced-motion:reduce){.QuickSignInConnections-module__axeJ4G__connections,.QuickSignInConnections-module__axeJ4G__connections[data-connected=true]{transition:none}}
.Badge-module__jXvChq__badge{border-radius:var(--radius-pill);letter-spacing:.01em;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;font-weight:500;line-height:1;display:inline-flex}.Badge-module__jXvChq__sm{min-height:1.375rem;padding:.2rem .5rem;font-size:.75rem}.Badge-module__jXvChq__md{min-height:1.625rem;padding:.3rem .625rem;font-size:.8125rem}.Badge-module__jXvChq__neutral{background:var(--surface-secondary);border-color:var(--border-subtle);color:var(--text-secondary)}.Badge-module__jXvChq__brand{background:var(--brand-subtle);color:var(--brand-strong)}.Badge-module__jXvChq__success{background:var(--success-subtle);color:var(--success-text)}.Badge-module__jXvChq__warning{background:var(--warning-subtle);color:var(--warning-text)}.Badge-module__jXvChq__danger{background:var(--danger-subtle);color:var(--danger-text)}.Badge-module__jXvChq__info{background:var(--info-subtle);color:var(--info-text)}
.Box-module__Yddk3G__box{min-width:0}.Box-module__Yddk3G__block{display:block}.Box-module__Yddk3G__flex{display:flex}.Box-module__Yddk3G__grid{display:grid}.Box-module__Yddk3G__direction-row{flex-direction:row}.Box-module__Yddk3G__direction-column{flex-direction:column}.Box-module__Yddk3G__gap-none{gap:0}.Box-module__Yddk3G__gap-xs{gap:var(--space-1)}.Box-module__Yddk3G__gap-sm{gap:var(--space-2)}.Box-module__Yddk3G__gap-md{gap:var(--space-3)}.Box-module__Yddk3G__gap-lg{gap:var(--space-4)}.Box-module__Yddk3G__gap-xl{gap:var(--space-6)}.Box-module__Yddk3G__align-start{align-items:flex-start}.Box-module__Yddk3G__align-center{align-items:center}.Box-module__Yddk3G__align-end{align-items:flex-end}.Box-module__Yddk3G__align-stretch{align-items:stretch}.Box-module__Yddk3G__justify-start{justify-content:flex-start}.Box-module__Yddk3G__justify-center{justify-content:center}.Box-module__Yddk3G__justify-end{justify-content:flex-end}.Box-module__Yddk3G__justify-between{justify-content:space-between}.Box-module__Yddk3G__wrap{flex-wrap:wrap}
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var(--focus-ring);outline-offset:var(--focus-ring-offset)}.Button-module__fANS6W__button:disabled{cursor:not-allowed;opacity:.6}.Button-module__fANS6W__sm{min-height:2rem;padding:.4375rem .6875rem}.Button-module__fANS6W__md{min-height:2.5rem;padding:.625rem .9375rem}.Button-module__fANS6W__lg{min-height:2.875rem;padding:.75rem 1.125rem;font-size:.9375rem}.Button-module__fANS6W__primary{--button-hover-fill:var(--brand-hover);background:var(--brand-default);border-color:var(--brand-default);color:var(--text-inverse)}.Button-module__fANS6W__primary:hover:not(:disabled){background-color:var(--button-hover-fill);border-color:var(--button-hover-fill)}.Button-module__fANS6W__secondary{background:var(--surface-primary);border-color:var(--border-default);color:var(--text-primary)}.Button-module__fANS6W__secondary:hover:not(:disabled){background-color:var(--button-hover-fill);border-color:var(--border-strong)}.Button-module__fANS6W__glass{--button-hover-fill:var(--glass-fill-hover);-webkit-backdrop-filter:blur(1rem)saturate(175%);backdrop-filter:blur(1rem)saturate(175%);background-color:var(--glass-fill);background-image:linear-gradient(115deg, var(--glass-highlight) 0%, transparent 38%, var(--glass-tint) 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.Button-module__fANS6W__content{text-underline-offset:var(--space-1);transition:text-decoration-color var(--duration-fast) var(--ease-standard);text-decoration-line:underline;text-decoration-color:#0000}.Button-module__fANS6W__underline:hover:not(:disabled),.Button-module__fANS6W__underline:active:not(:disabled),.Button-module__fANS6W__underline:focus-visible{color:var(--text-primary)}.Button-module__fANS6W__underline:hover:not(:disabled) .Button-module__fANS6W__content,.Button-module__fANS6W__underline:active:not(:disabled) .Button-module__fANS6W__content,.Button-module__fANS6W__underline:focus-visible .Button-module__fANS6W__content{text-decoration-color:currentColor}.Button-module__fANS6W__writing .Button-module__fANS6W__content{position:relative}.Button-module__fANS6W__writingUnderline{fill:none;pointer-events:none;stroke:currentColor;stroke-width:1px;width:100%;height:9px;position:absolute;top:calc(100% + .1em);left:0;overflow:visible}.Button-module__fANS6W__writingUnderline path{stroke-dasharray:1.01;stroke-dashoffset:1.01px;transition:stroke-dashoffset .6s cubic-bezier(.7,0,.3,1)}.Button-module__fANS6W__writing:is(:hover,:focus-visible):not(:disabled):not([aria-disabled=true]){color:var(--text-primary)}.Button-module__fANS6W__writing:is(:hover,:focus-visible):not(:disabled):not([aria-disabled=true]) .Button-module__fANS6W__writingUnderline path{stroke-dashoffset:0;transition-duration:.3s;transition-timing-function:cubic-bezier(.8,1,.7,1)}.Button-module__fANS6W__fullWidth{width:100%}.Button-module__fANS6W__content{align-items:center;min-width:0;display:inline-flex}.Button-module__fANS6W__spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:.875rem;height:.875rem;animation:.7s linear infinite Button-module__fANS6W__spin}@keyframes Button-module__fANS6W__spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.Button-module__fANS6W__button,.Button-module__fANS6W__underline 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(forced-colors:active){.Button-module__fANS6W__button:not(.Button-module__fANS6W__underline):not(.Button-module__fANS6W__writing):not(.Button-module__fANS6W__ghost),.Button-module__fANS6W__button:not(.Button-module__fANS6W__underline):not(.Button-module__fANS6W__writing):not(.Button-module__fANS6W__ghost):hover:not(:disabled),.Button-module__fANS6W__button:not(.Button-module__fANS6W__underline):not(.Button-module__fANS6W__writing):not(.Button-module__fANS6W__ghost):focus-visible{-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none;color:buttontext;background:buttonface;border-color:buttontext}}
.MorphingDropdownButton-module__bkINLq__root{--dropdown-toggle-width:2.875rem;display:inline-block;position:relative}.MorphingDropdownButton-module__bkINLq__fullWidth{width:100%;display:block}.MorphingDropdownButton-module__bkINLq__actions{display:flex}.MorphingDropdownButton-module__bkINLq__primary{border-start-start-radius:var(--radius-pill);border-start-end-radius:0;border-end-end-radius:0;border-end-start-radius:var(--radius-pill);flex:1;min-width:0}.MorphingDropdownButton-module__bkINLq__toggle{flex:0 0 var(--dropdown-toggle-width);isolation:isolate;border-start-start-radius:0;border-start-end-radius:var(--radius-pill);border-end-end-radius:var(--radius-pill);border-end-start-radius:0;padding-inline:0}.MorphingDropdownButton-module__bkINLq__toggle:after{content:"";opacity:.25;background:currentColor;width:1px;position:absolute;top:25%;bottom:25%;left:0}.MorphingDropdownButton-module__bkINLq__root[data-variant=primary] :is(.MorphingDropdownButton-module__bkINLq__primary,.MorphingDropdownButton-module__bkINLq__toggle){color:var(--text-on-brand)}.MorphingDropdownButton-module__bkINLq__root[data-size=sm]{--dropdown-toggle-width:2.5rem}.MorphingDropdownButton-module__bkINLq__root[data-size=lg]{--dropdown-toggle-width:3rem}.MorphingDropdownButton-module__bkINLq__label{color:inherit;font:inherit;letter-spacing:inherit;line-height:1.25}.MorphingDropdownButton-module__bkINLq__chevron{transition:transform var(--duration-normal) var(--ease-standard)}.MorphingDropdownButton-module__bkINLq__root[data-open=true] .MorphingDropdownButton-module__bkINLq__chevron{transform:rotate(180deg)}.MorphingDropdownButton-module__bkINLq__menu{max-height:min(26rem, var(--dropdown-available-height,calc(100dvh - 9rem)));padding:0 var(--space-1) var(--space-2);pointer-events:none;right:calc(-1 * var(--space-1));scrollbar-width:thin;visibility:hidden;width:min(calc(100% + var(--space-2)), 19rem);z-index:2;transition:visibility 0s .18s;position:absolute;top:100%;overflow:clip auto}.MorphingDropdownButton-module__bkINLq__root[data-open=true] .MorphingDropdownButton-module__bkINLq__menu{pointer-events:auto;visibility:visible;transition-delay:0s}.MorphingDropdownButton-module__bkINLq__optionRow{padding-top:var(--space-3);transform-origin:calc(100% - var(--dropdown-toggle-width) / 2) 0;position:relative}.MorphingDropdownButton-module__bkINLq__optionRow:before{border-left:2px dotted color-mix(in srgb, var(--brand-default) 65%, var(--text-tertiary));content:"";height:var(--space-3);right:calc(var(--dropdown-toggle-width) / 2 - 1px);position:absolute;top:0}.MorphingDropdownButton-module__bkINLq__option{background:var(--background-elevated);border-color:var(--border-default);border-radius:var(--radius-pill);box-shadow:var(--shadow-sm);color:var(--text-primary);min-height:2.75rem;padding-inline:var(--space-3);justify-content:flex-start;width:100%}.MorphingDropdownButton-module__bkINLq__option:hover,.MorphingDropdownButton-module__bkINLq__option:focus-visible{border-color:color-mix(in srgb, var(--brand-default) 55%, var(--border-default))}.MorphingDropdownButton-module__bkINLq__icon{border-radius:var(--radius-pill);justify-content:center;align-items:center;width:1.5rem;height:1.5rem;display:inline-flex}@media (prefers-reduced-motion:reduce){.MorphingDropdownButton-module__bkINLq__chevron,.MorphingDropdownButton-module__bkINLq__menu{transition:none}}@media (forced-colors:active){.MorphingDropdownButton-module__bkINLq__optionRow:before{border-color:buttontext}}
.ProblemCatalog-module__jNw4Ja__page{--catalog-section-inset:clamp(4.5rem, 8vw, 10rem);--catalog-section-space:clamp(4.5rem, 4.5vw, 6.75rem);--eyebrow-gradient-start:var(--brand-default);--eyebrow-gradient-end:color-mix(in srgb, var(--brand-default) 30%, var(--background-elevated));isolation:isolate;min-height:calc(100dvh - var(--header-height));min-width:0;padding-block:var(--catalog-section-space);padding-inline:calc(var(--page-frame-gutter) + var(--catalog-section-inset));width:min(100%, var(--content-max));background:0 0;align-content:start;margin:0 auto;display:grid;position:relative}.ProblemCatalog-module__jNw4Ja__catalogBackdrop{contain:paint;opacity:.15;pointer-events:none;z-index:-1;position:fixed;inset:0;overflow:hidden}[data-theme=dark] .ProblemCatalog-module__jNw4Ja__catalogBackdrop{opacity:1}@media (prefers-color-scheme:dark){:root:not([data-theme]) .ProblemCatalog-module__jNw4Ja__catalogBackdrop{opacity:1}}.ProblemCatalog-module__jNw4Ja__backdropOrb{aspect-ratio:1;transform-origin:50%;border-radius:50%;position:absolute}.ProblemCatalog-module__jNw4Ja__backdropOrbPrimary{inline-size:clamp(34rem,66vmax,72rem);top:-24vmax;transform:scale(.96)}.ProblemCatalog-module__jNw4Ja__backdropOrbSecondary{inline-size:clamp(30rem,58vmax,64rem);bottom:-25vmax;transform:scale(1.06)}.ProblemCatalog-module__jNw4Ja__backdropOrbPrimary[data-position=right],.ProblemCatalog-module__jNw4Ja__backdropOrbSecondary[data-position=right]{right:-20vmax}.ProblemCatalog-module__jNw4Ja__backdropOrbPrimary[data-position=left],.ProblemCatalog-module__jNw4Ja__backdropOrbSecondary[data-position=left]{left:-20vmax}.ProblemCatalog-module__jNw4Ja__backdropOrbPrimary[data-position=right]{background:radial-gradient(circle, color-mix(in srgb, var(--brand-default) 18%, transparent) 0%, color-mix(in srgb, var(--brand-default) 9%, transparent) 42%, transparent 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@keyframes Reveal-module__Sd9imq__reveal{0%{opacity:0;transform:translateY(var(--reveal-distance,12px))}to{opacity:1;transform:none}}@media (prefers-reduced-motion:no-preference){.Reveal-module__Sd9imq__reveal[data-reveal-state=pending]{opacity:0;transform:translateY(var(--reveal-distance,12px))}.Reveal-module__Sd9imq__reveal[data-reveal-state=revealed]{animation:Reveal-module__Sd9imq__reveal var(--reveal-duration,.48s) cubic-bezier(.16, 1, .3, 1) var(--reveal-delay,0s) backwards}}.Reveal-module__Sd9imq__reveal:focus-within{opacity:1!important;transform:none!important}@media print,(forced-colors:active){.Reveal-module__Sd9imq__reveal[data-reveal-state]{opacity:1;animation:none;transform:none}}
.PageErrorOverlay-module__4giCiG__root{background:var(--background-primary);gap:var(--space-2);width:100%;min-height:100dvh;display:grid}.PageErrorOverlay-module__4giCiG__alertFrame{max-width:var(--content-max);padding:0 var(--page-frame-gutter);width:100%;margin:0 auto}.PageErrorOverlay-module__4giCiG__alert{background:var(--danger-subtle);border:1px solid color-mix(in srgb, var(--danger-subtle) 34%, var(--border-subtle));border-radius:var(--radius-xs);color:var(--danger-text);padding:var(--space-1) var(--page-content-padding-inline,var(--global-padding-inline));grid-template-columns:auto minmax(0,1fr) auto;align-items:center;width:100%;display:grid}.PageErrorOverlay-module__4giCiG__icon{color:var(--danger-default)}.PageErrorOverlay-module__4giCiG__copy{min-width:0}.PageErrorOverlay-module__4giCiG__eyebrow{color:var(--danger-text);margin-bottom:var(--space-1);display:block}.PageErrorOverlay-module__4giCiG__title{color:var(--text-primary)}.PageErrorOverlay-module__4giCiG__description{color:var(--text-secondary);margin-top:var(--space-1);max-width:48rem}.PageErrorOverlay-module__4giCiG__actions{gap:var(--space-2);flex-wrap:wrap;justify-content:flex-end;display:flex}.PageErrorOverlay-module__4giCiG__skeleton{min-height:inherit;pointer-events:none;-webkit-user-select:none;user-select:none}@media (max-width:48rem){.PageErrorOverlay-module__4giCiG__alert{grid-template-columns:auto minmax(0,1fr);align-items:start}.PageErrorOverlay-module__4giCiG__icon{margin-top:var(--space-1)}.PageErrorOverlay-module__4giCiG__actions{grid-column:2;justify-content:flex-start}}@media (max-width:32rem){.PageErrorOverlay-module__4giCiG__actions{grid-template-columns:minmax(0,1fr);width:100%;display:grid}.PageErrorOverlay-module__4giCiG__actions>*{width:100%}}
.Toggle-module__AW5jPa__root{border:0;min-inline-size:0;margin:0;padding:0}.Toggle-module__AW5jPa__options{background:var(--background-secondary);border:1px solid var(--border-default);border-radius:var(--radius-pill);gap:var(--space-1);max-width:fit-content;padding:var(--space-1);display:flex}.Toggle-module__AW5jPa__root[data-full-width=true],.Toggle-module__AW5jPa__root[data-full-width=true] .Toggle-module__AW5jPa__options{width:100%}.Toggle-module__AW5jPa__root[data-full-width=true] .Toggle-module__AW5jPa__options{max-width:none}.Toggle-module__AW5jPa__option{border-radius:var(--radius-pill);color:var(--text-secondary);cursor:pointer;font:inherit;isolation:isolate;min-width:0;min-height:2.75rem;padding:var(--space-2) var(--space-4);transition:color var(--duration-fast) var(--ease-standard);justify-content:center;align-items:center;display:inline-flex;position:relative}.Toggle-module__AW5jPa__root[data-full-width=true] .Toggle-module__AW5jPa__option{flex:1 1 0}.Toggle-module__AW5jPa__option[data-has-description=true]{padding:var(--space-4) var(--space-5);text-align:left;justify-content:flex-start;align-items:flex-start}.Toggle-module__AW5jPa__option[data-selected=true]{color:var(--text-primary)}.Toggle-module__AW5jPa__option[data-disabled=true]{cursor:not-allowed;opacity:.64}.Toggle-module__AW5jPa__input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute;inset:50% auto auto 50%}.Toggle-module__AW5jPa__indicator{background:var(--background-primary);border-radius:inherit;z-index:0;position:absolute;inset:0;box-shadow:0 1px 3px #0000001a}.Toggle-module__AW5jPa__content{gap:var(--space-1);z-index:1;min-width:0;display:grid;position:relative}.Toggle-module__AW5jPa__label{align-items:baseline;gap:var(--space-2);justify-content:center;min-width:0;display:inline-flex}.Toggle-module__AW5jPa__option[data-has-description=true] .Toggle-module__AW5jPa__label{justify-content:flex-start}.Toggle-module__AW5jPa__description{color:var(--text-tertiary);font-size:var(--font-size-xs);overflow-wrap:anywhere;line-height:1.45}.Toggle-module__AW5jPa__option:has(.Toggle-module__AW5jPa__input:focus-visible){outline:var(--focus-ring-width) solid var(--focus-ring);outline-offset:3px}.Toggle-module__AW5jPa__root[data-appearance=minimal] .Toggle-module__AW5jPa__options{border-color:var(--border-subtle);background:0 0;flex-wrap:wrap}.Toggle-module__AW5jPa__root[data-appearance=minimal] .Toggle-module__AW5jPa__option{min-height:2.5rem;font-size:.8125rem}.Toggle-module__AW5jPa__root[data-appearance=minimal] .Toggle-module__AW5jPa__indicator{background:var(--surface-secondary);box-shadow:none}@media (max-width:30rem){.Toggle-module__AW5jPa__root[data-full-width=true] .Toggle-module__AW5jPa__options:has(.Toggle-module__AW5jPa__option[data-has-description=true]){flex-direction:column}.Toggle-module__AW5jPa__root[data-full-width=true] .Toggle-module__AW5jPa__option[data-has-description=true]{width:100%}}@media (prefers-reduced-motion:reduce){.Toggle-module__AW5jPa__option{transition:none}}@media (forced-colors:active){.Toggle-module__AW5jPa__indicator{background:canvas;border-color:highlight}}
.PageSkeletons-module__K5NW5W__viewport{width:100%;min-height:100dvh;overflow:hidden}.PageSkeletons-module__K5NW5W__contents{display:contents}.PageSkeletons-module__K5NW5W__bone{background:var(--surface-active);border-radius:var(--radius-sm);width:100%;max-width:100%;height:.75rem;animation:1.5s ease-in-out infinite PageSkeletons-module__K5NW5W__skeleton-pulse;display:block}.PageSkeletons-module__K5NW5W__copyLong{width:min(100%,40rem)}.PageSkeletons-module__K5NW5W__copyMedium{width:min(72%,29rem)}.PageSkeletons-module__K5NW5W__eyebrowBone{width:6rem;height:.625rem}.PageSkeletons-module__K5NW5W__problemsPage{--catalog-skeleton-inset:clamp(4.5rem, 8vw, 10rem);--catalog-skeleton-space:clamp(4.5rem, 4.5vw, 6.75rem);isolation:isolate;max-width:var(--content-max);min-height:calc(100dvh - var(--header-height));min-width:0;padding-block:var(--catalog-skeleton-space);padding-inline:calc(var(--page-frame-gutter) + var(--catalog-skeleton-inset));grid-template-columns:minmax(0,1fr);align-content:start;width:100%;margin:0 auto;display:grid;position:relative}.PageSkeletons-module__K5NW5W__problemsHeader{align-items:flex-end;gap:var(--space-8);margin-bottom:var(--space-16);justify-content:space-between;display:flex}.PageSkeletons-module__K5NW5W__problemsHeading{width:100%;min-width:0;max-width:46rem}.PageSkeletons-module__K5NW5W__problemsEyebrow{border-radius:var(--radius-pill);height:1.75rem;margin-bottom:var(--space-4);width:6.5rem}.PageSkeletons-module__K5NW5W__problemsTitle{width:min(100%,36rem);height:clamp(2.75rem,4.6vw,3.75rem)}.PageSkeletons-module__K5NW5W__problemsIntroLine,.PageSkeletons-module__K5NW5W__problemsIntroShort{height:1rem}.PageSkeletons-module__K5NW5W__problemsIntroLine{margin-top:var(--space-5);width:min(100%,36rem)}.PageSkeletons-module__K5NW5W__problemsIntroShort{width:min(68%,27rem);margin-top:.75rem}.PageSkeletons-module__K5NW5W__problemStats{flex:none;min-width:18.75rem;margin:0;display:flex}.PageSkeletons-module__K5NW5W__problemStats>div{min-width:5.75rem;padding-inline:var(--space-5);flex-direction:column;flex:1;display:flex}.PageSkeletons-module__K5NW5W__problemStats>div:first-child{padding-left:0}.PageSkeletons-module__K5NW5W__problemStats>div:last-child{padding-right:0}.PageSkeletons-module__K5NW5W__problemStats>div+div{border-left:1px solid var(--border-subtle)}.PageSkeletons-module__K5NW5W__statValue{width:2.75rem;height:1.75rem}.PageSkeletons-module__K5NW5W__statLabel{height:.625rem;margin-top:var(--space-2);width:3.75rem}.PageSkeletons-module__K5NW5W__problemAccountNotice{margin-bottom:var(--space-8);display:none}:is([data-account-status=signed-out] .PageSkeletons-module__K5NW5W__problemAccountNotice,[data-account-status=unconfigured] .PageSkeletons-module__K5NW5W__problemAccountNotice,[data-account-status=error] .PageSkeletons-module__K5NW5W__problemAccountNotice){display:block}.PageSkeletons-module__K5NW5W__noticeLine{width:min(80%,41rem);height:.75rem}.PageSkeletons-module__K5NW5W__problemCatalogLayout{border-top:1px solid var(--border-default);align-items:start;gap:var(--space-8);grid-template-areas:"practice results filters""learning results filters";grid-template-columns:11rem minmax(0, 1fr) calc(15rem + var(--space-2));padding-top:var(--space-8);grid-template-rows:auto 1fr;display:grid}.PageSkeletons-module__K5NW5W__catalogRailSection,.PageSkeletons-module__K5NW5W__catalogFilters,.PageSkeletons-module__K5NW5W__catalogResults{min-width:0}.PageSkeletons-module__K5NW5W__catalogRailSection{align-self:start}.PageSkeletons-module__K5NW5W__practiceRail{grid-area:practice}.PageSkeletons-module__K5NW5W__learningRail{grid-area:learning}.PageSkeletons-module__K5NW5W__railHeading{width:5rem;height:.875rem}.PageSkeletons-module__K5NW5W__catalogNavigation{gap:var(--space-2);margin-top:var(--space-4);display:grid}.PageSkeletons-module__K5NW5W__catalogNavigation>div{align-items:center;gap:var(--space-2);min-height:2.5rem;padding:var(--space-2) var(--space-3);grid-template-columns:1rem minmax(0,1fr) 1.5rem;display:grid}.PageSkeletons-module__K5NW5W__navigationIcon{width:1rem;height:1rem}.PageSkeletons-module__K5NW5W__navigationLabel{width:5rem}.PageSkeletons-module__K5NW5W__navigationCount{justify-self:end;width:1.5rem;height:.625rem}.PageSkeletons-module__K5NW5W__learningLinks{gap:var(--space-2);margin-top:var(--space-4);display:grid}.PageSkeletons-module__K5NW5W__learningLinks .PageSkeletons-module__K5NW5W__bone{height:1.75rem}.PageSkeletons-module__K5NW5W__catalogResults{grid-area:results;align-self:stretch;min-width:0;display:grid}.PageSkeletons-module__K5NW5W__catalogResultRow{border-bottom:1px solid var(--border-subtle);align-items:center;gap:var(--space-3);min-width:0;padding:var(--space-6) var(--space-2);grid-template-columns:minmax(0,1fr) 2rem;display:grid}.PageSkeletons-module__K5NW5W__catalogResultRow:first-child{padding-top:0}.PageSkeletons-module__K5NW5W__resultStatus{border-radius:50%;place-self:center end;width:1rem;height:1rem}.PageSkeletons-module__K5NW5W__resultCopy{min-width:0;padding-top:1px}.PageSkeletons-module__K5NW5W__resultTitle{width:min(82%,24rem);height:1rem}.PageSkeletons-module__K5NW5W__resultMeta{gap:var(--space-3);margin-top:var(--space-3);flex-wrap:wrap;display:flex}.PageSkeletons-module__K5NW5W__resultMeta .PageSkeletons-module__K5NW5W__bone{width:4.5rem;height:.625rem}.PageSkeletons-module__K5NW5W__resultMeta .PageSkeletons-module__K5NW5W__bone:last-child{width:6.5rem}.PageSkeletons-module__K5NW5W__catalogFilters{border-left:1px solid var(--border-subtle);gap:var(--space-5);margin-left:var(--space-2);max-height:calc(100dvh - var(--header-height) - var(--space-12));padding:0 var(--space-1) var(--space-1) calc(var(--space-6) + var(--space-1));scrollbar-width:thin;top:calc(var(--header-height) + var(--space-6));grid-area:filters;display:grid;position:sticky;overflow-y:auto}.PageSkeletons-module__K5NW5W__filterHeading{padding-bottom:var(--space-1)}.PageSkeletons-module__K5NW5W__filterTitle{width:4rem;height:1rem}.PageSkeletons-module__K5NW5W__filterSubtitle{width:6.5rem;height:.625rem;margin-top:1px}.PageSkeletons-module__K5NW5W__filterField{min-width:0}.PageSkeletons-module__K5NW5W__filterLabel{height:.625rem;margin-bottom:var(--space-1);width:4rem}.PageSkeletons-module__K5NW5W__filterInput{border-radius:var(--radius-md);height:2.625rem}.PageSkeletons-module__K5NW5W__filterAction{border-radius:var(--radius-button);height:2.625rem}.PageSkeletons-module__K5NW5W__workspace{background:var(--background-primary);border-left:1px solid var(--border-subtle);border-right:1px solid var(--border-subtle);border-top:1px solid var(--border-subtle);color:var(--text-primary);height:100dvh;max-width:var(--content-max);flex-direction:column;width:100%;min-height:32rem;margin:0 auto;display:flex;overflow:hidden}.PageSkeletons-module__K5NW5W__workspaceToolbar{background:var(--background-elevated);border-bottom:1px solid var(--border-default);align-items:center;gap:var(--space-4);min-height:3.25rem;padding:var(--space-2) var(--space-4);flex:none;justify-content:space-between;display:flex}.PageSkeletons-module__K5NW5W__toolbarIdentity,.PageSkeletons-module__K5NW5W__toolbarActions{align-items:center;display:flex}.PageSkeletons-module__K5NW5W__toolbarIdentity{gap:var(--space-3);min-width:0}.PageSkeletons-module__K5NW5W__toolbarActions{gap:var(--space-2);flex:none}.PageSkeletons-module__K5NW5W__toolbarBack{width:5rem;height:.875rem}.PageSkeletons-module__K5NW5W__toolbarDivider{background:var(--border-default);width:1px;height:1rem}.PageSkeletons-module__K5NW5W__toolbarTitle{width:min(20rem,24vw);height:.75rem}.PageSkeletons-module__K5NW5W__toolbarActions .PageSkeletons-module__K5NW5W__bone{height:2rem}.PageSkeletons-module__K5NW5W__toolbarActions .PageSkeletons-module__K5NW5W__bone:first-child{width:4.5rem}.PageSkeletons-module__K5NW5W__toolbarActions .PageSkeletons-module__K5NW5W__bone:nth-child(2){width:4rem}.PageSkeletons-module__K5NW5W__toolbarActions .PageSkeletons-module__K5NW5W__bone:nth-child(3){width:5.25rem}.PageSkeletons-module__K5NW5W__gradingNotice{background:var(--warning-subtle);border-bottom:1px solid var(--border-subtle);padding:var(--space-2) var(--space-4);flex:none}.PageSkeletons-module__K5NW5W__gradingNoticeLine{width:min(70%,38rem);height:.75rem}.PageSkeletons-module__K5NW5W__mobileTabs{display:none}.PageSkeletons-module__K5NW5W__workspaceBody{flex:1;grid-template-columns:minmax(17rem,27%) .5rem minmax(24rem,1fr);min-height:0;display:grid}.PageSkeletons-module__K5NW5W__problemPane{background:var(--background-primary);min-width:0;overflow:hidden}.PageSkeletons-module__K5NW5W__problemContent{padding:var(--space-8) var(--space-6) var(--space-10);width:min(100%,48rem);margin:0 auto}.PageSkeletons-module__K5NW5W__workspaceProblemTitle{width:min(88%,21rem);height:1.25rem}.PageSkeletons-module__K5NW5W__problemContent>.PageSkeletons-module__K5NW5W__copyLong{margin-top:var(--space-3)}.PageSkeletons-module__K5NW5W__problemContent>.PageSkeletons-module__K5NW5W__copyMedium{margin-top:var(--space-2)}.PageSkeletons-module__K5NW5W__problemBadges,.PageSkeletons-module__K5NW5W__problemMeta{flex-wrap:wrap;display:flex}.PageSkeletons-module__K5NW5W__problemBadges{gap:var(--space-2);margin-top:var(--space-4)}.PageSkeletons-module__K5NW5W__problemBadges .PageSkeletons-module__K5NW5W__bone{width:4rem;height:1.5rem}.PageSkeletons-module__K5NW5W__problemMeta{gap:var(--space-4);margin-top:var(--space-4)}.PageSkeletons-module__K5NW5W__problemMeta .PageSkeletons-module__K5NW5W__bone{width:6rem}.PageSkeletons-module__K5NW5W__verticalResizeHandle,.PageSkeletons-module__K5NW5W__horizontalResizeHandle{background:var(--border-subtle)}.PageSkeletons-module__K5NW5W__centerPane{background:var(--background-editor);grid-template-rows:minmax(8rem,1fr) .5rem minmax(8rem,38%);min-width:0;min-height:0;display:grid;overflow:hidden}.PageSkeletons-module__K5NW5W__editorRegion{flex-direction:column;min-width:0;min-height:0;display:flex}.PageSkeletons-module__K5NW5W__editorHeader{background:var(--background-secondary);border-bottom:1px solid var(--border-default);min-height:2.5rem;padding-right:var(--space-4);flex:none;justify-content:space-between;align-items:center;display:flex}.PageSkeletons-module__K5NW5W__editorTab{border-right:1px solid var(--border-default);border-top:2px solid var(--brand-default);border-radius:0;align-self:stretch;width:8rem}.PageSkeletons-module__K5NW5W__editorLanguage{width:7rem}.PageSkeletons-module__K5NW5W__editorCanvas{padding:var(--space-5);flex:1}.PageSkeletons-module__K5NW5W__codeLineLong,.PageSkeletons-module__K5NW5W__codeLineMedium,.PageSkeletons-module__K5NW5W__codeLineShort{height:.625rem;margin-top:var(--space-3)}.PageSkeletons-module__K5NW5W__codeLineLong{width:82%}.PageSkeletons-module__K5NW5W__codeLineMedium{width:63%}.PageSkeletons-module__K5NW5W__codeLineShort{width:41%}.PageSkeletons-module__K5NW5W__bottomPanel{background:var(--background-secondary);border-top:1px solid var(--border-default);min-height:0}.PageSkeletons-module__K5NW5W__bottomPanelHeader{border-bottom:1px solid var(--border-subtle);align-items:center;gap:var(--space-5);min-height:2.625rem;padding:0 var(--space-4);display:flex}.PageSkeletons-module__K5NW5W__bottomPanelHeader .PageSkeletons-module__K5NW5W__bone{width:4.5rem}.PageSkeletons-module__K5NW5W__learningPage,.PageSkeletons-module__K5NW5W__learningDetailPage{--learning-skeleton-inset:clamp(4.5rem, 8vw, 10rem);--learning-skeleton-space:clamp(4.5rem, 4.5vw, 6.75rem);isolation:isolate;max-width:var(--content-max);min-height:calc(100dvh - var(--header-height));min-width:0;padding-block:var(--learning-skeleton-space);padding-inline:calc(var(--page-frame-gutter) + var(--learning-skeleton-inset));grid-template-columns:minmax(0,1fr);align-content:start;width:100%;margin:0 auto;display:grid;position:relative}.PageSkeletons-module__K5NW5W__learningHeader{margin-bottom:var(--space-16);max-width:46rem;display:grid}.PageSkeletons-module__K5NW5W__learningEyebrow{border-radius:var(--radius-pill);height:1.75rem;margin-bottom:var(--space-4);width:7rem}.PageSkeletons-module__K5NW5W__learningTitle{width:min(100%,39rem);height:clamp(2.75rem,4.6vw,3.75rem)}.PageSkeletons-module__K5NW5W__learningSummary{gap:var(--space-2);margin-top:var(--space-5);display:grid}.PageSkeletons-module__K5NW5W__learningSummaryLong{width:min(100%,36rem);height:1rem}.PageSkeletons-module__K5NW5W__learningSummaryShort{width:min(72%,26rem);height:1rem}.PageSkeletons-module__K5NW5W__learningSection{border-top:1px solid 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var(--border-default);flex:none;grid-template-columns:repeat(3,minmax(0,1fr));min-height:2.75rem;display:grid}.PageSkeletons-module__K5NW5W__mobileTabs>div{align-items:center;gap:var(--space-2);justify-content:center;display:flex}.PageSkeletons-module__K5NW5W__mobileTabs>div:first-child{background:var(--brand-subtle);border-bottom:2px solid var(--brand-default)}.PageSkeletons-module__K5NW5W__mobileTabIcon{width:1rem;height:1rem}.PageSkeletons-module__K5NW5W__mobileTabLabel{width:3rem}.PageSkeletons-module__K5NW5W__workspaceBody{display:block}.PageSkeletons-module__K5NW5W__problemPane{height:100%}.PageSkeletons-module__K5NW5W__problemContent{padding:var(--space-6) var(--space-4) var(--space-8)}.PageSkeletons-module__K5NW5W__verticalResizeHandle,.PageSkeletons-module__K5NW5W__centerPane{display:none}}@media 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