@layer theme,base,components,utilities;@layer learner-base{.fallback-panel{background-color:var(--fallback-tint,var(--fx-a,var(--color-zinc-400)))}@supports (color:color-mix(in lab, red, red)){.fallback-panel{background-color:color-mix(in oklab, var(--fallback-tint,var(--fx-a,var(--color-zinc-400))) 9%, var(--color-zinc-100))}}.fallback-panel{background-image:radial-gradient(var(--color-border) 1px, transparent 1px);color:var(--color-foreground);background-size:20px 20px}.dark .fallback-panel{background-color:var(--fallback-tint,var(--fx-a,var(--color-zinc-400)))}@supports (color:color-mix(in lab, red, red)){.dark .fallback-panel{background-color:color-mix(in oklab, var(--fallback-tint,var(--fx-a,var(--color-zinc-400))) 12%, var(--color-zinc-900))}}.content-hero-page .content-prose .content-document-header{display:none}.learner-course-player,.learner-course-storefront{min-height:100dvh}.learner-course-player{--learner-lesson-map-width:5rem;--learner-font-family:var(--font-cal-sans,ui-sans-serif), system-ui, sans-serif;--learner-prose-geometry:0;--learner-control-geometry:0;--learner-heading-geometry:0;--learner-reading-measure:var(--learner-measure-prose,46.5rem);--learner-reader-frame:calc(var(--learner-reading-measure) + 4rem);background:var(--background);font-family:var(--learner-font-family);font-variation-settings:"GEOM" var(--learner-prose-geometry)}.learner-course-storefront{background:var(--course-canvas,var(--background))}.course-cover-theme{background:linear-gradient(110deg, var(--foreground), transparent 42%, var(--foreground))}@supports (color:color-mix(in lab, red, red)){.course-cover-theme{background:linear-gradient(110deg, color-mix(in oklab, var(--foreground) 5%, transparent), transparent 42%, color-mix(in oklab, var(--foreground) 3%, transparent))}}.course-cover-fade{background:linear-gradient(to bottom, transparent, var(--course-canvas,var(--background)))}.learner-study-layout{min-height:calc(100dvh - var(--learner-header-height,0px));background:var(--background)}.learner-study-document[hidden]{display:none}.learner-study-actions{justify-content:flex-end;align-items:center;gap:.5rem;min-width:0;display:flex}.learner-study-primary-tool{width:2rem;height:2rem;box-shadow:none;border:0;padding:0;position:relative}.learner-study-primary-tool-count{border-radius:var(--learner-radius-pill);background:var(--foreground);min-width:1rem;height:1rem;color:var(--background);font-variant-numeric:tabular-nums;place-items:center;padding-inline:.2rem;font-size:.5625rem;line-height:1;display:grid;position:absolute;inset-block-start:-.125rem;inset-inline-end:-.125rem}.learner-study-introduction{grid-template-columns:minmax(0, 1fr) minmax(var(--learner-card-min), calc(var(--learner-selection-column) + var(--learner-space-8)));width:min(calc(100% - 2 * var(--learner-page-gutter)), var(--learner-measure-media));margin:var(--learner-space-8) auto var(--learner-space-12);border-radius:var(--learner-radius-surface);background:var(--learner-course-soft);display:grid;position:relative;overflow:hidden}.learner-study-introduction [data-slot=course-context-surface]{padding:var(--learner-space-12);flex-direction:column;grid-area:1/1;justify-content:center;align-items:stretch;display:flex}.learner-study-introduction [data-slot=course-context-copy]{max-inline-size:var(--learner-measure-prose)}.learner-study-position{margin-bottom:var(--learner-space-4);color:var(--muted-foreground);font-size:var(--learner-meta-size);line-height:var(--learner-meta-line)}.learner-course-intro h1{font-size:var(--learner-h1-size);font-weight:680;line-height:var(--learner-h1-line);letter-spacing:-.025em;text-wrap:balance}.learner-study-description{max-width:var(--learner-measure-prose);margin-top:var(--learner-space-4);color:var(--muted-foreground);font-size:var(--learner-description-size);line-height:var(--learner-description-line)}.learner-study-cover{min-height:calc(var(--learner-space-24) * 3);grid-area:1/2;position:relative;overflow:hidden}.learner-study-cover .course-cover-signature{height:100%}.learner-session-overview{width:min(calc(100% - 2 * var(--learner-page-gutter)), var(--learner-measure-wide));padding-bottom:var(--learner-space-16);margin:0 auto}.learner-session-plan-heading{justify-content:space-between;align-items:center;gap:1rem;display:flex}.learner-session-plan-heading h2,.learner-review-mode h2{font-size:var(--learner-h3-size);font-weight:600;line-height:var(--learner-h3-line)}.learner-session-plan-heading>span{color:var(--muted-foreground);font-size:var(--learner-meta-size);line-height:var(--learner-meta-line);font-variant-numeric:tabular-nums}.learner-session-progress{margin-block:var(--learner-space-6);gap:0}.learner-session-progress [data-slot=progress-track]{height:var(--learner-space-1);background:var(--muted)}.learner-session-progress [data-slot=progress-indicator]{background:var(--course-accent,var(--primary));transition:transform var(--learner-motion-trace) var(--learner-motion-ease)}.learner-session-plan ol{flex-direction:column;gap:.375rem;display:flex}.learner-session-plan li{align-items:center;gap:var(--learner-space-3);min-height:var(--learner-control-hit);padding-block:var(--learner-space-4);border-bottom:var(--learner-line-width) solid var(--border);display:flex}.learner-session-plan li[data-state=current]{color:var(--foreground)}.learner-session-step-number{width:var(--learner-space-8);height:var(--learner-space-8);border-radius:var(--learner-radius-pill);background:var(--muted);color:var(--muted-foreground);font-size:var(--learner-meta-size);line-height:var(--learner-meta-line);flex-shrink:0;place-items:center;display:grid}.learner-session-step-number svg,.learner-session-step-state svg{width:1rem;height:1rem}.learner-session-plan li[data-state=completed] .learner-session-step-number{color:var(--success);background:var(--success)}@supports (color:color-mix(in lab, red, red)){.learner-session-plan li[data-state=completed] .learner-session-step-number{background:color-mix(in oklab, var(--success) 10%, transparent)}}.learner-session-plan li[data-state=current] .learner-session-step-number{background:var(--course-accent)}@supports (color:color-mix(in lab, red, red)){.learner-session-plan li[data-state=current] .learner-session-step-number{background:color-mix(in oklab, var(--course-accent) 10%, transparent)}}.learner-session-plan li[data-state=current] .learner-session-step-number{color:var(--course-accent)}.learner-session-step-state{color:var(--muted-foreground);font-size:var(--learner-meta-size);line-height:var(--learner-meta-line);margin-left:auto}.learner-session-resume{align-items:flex-start;gap:var(--learner-space-3);margin-top:var(--learner-space-8);flex-direction:column;display:flex}.learner-session-resume button{min-height:var(--learner-control-hit)}.learner-session-resume-controls{align-items:center;gap:var(--learner-space-2);flex-wrap:wrap;display:flex}.learner-course-player:is([data-study-state=reading],[data-overview-reader=true]) .learner-study-introduction{width:min(100%, var(--learner-reader-frame));padding:var(--learner-space-8) var(--learner-space-8) 0;background:0 0;border-radius:0;flex-direction:column;margin:0 auto;display:flex;overflow:visible}.learner-course-player:is([data-study-state=reading],[data-overview-reader=true]) .learner-study-introduction [data-slot=course-context-surface]{order:2;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:1rem;padding:0;display:grid;position:relative}.learner-course-player:is([data-study-state=reading],[data-overview-reader=true]) .learner-study-introduction [data-slot=course-context-copy],.learner-study-frame{min-width:0}.learner-course-player:is([data-study-state=reading],[data-overview-reader=true]) .learner-study-cover{aspect-ratio:16/9;border-radius:var(--learner-radius-component);min-block-size:0;inline-size:100%;order:1;margin-block-end:var(--learner-feature-gap)}.learner-course-player:is([data-study-state=reading],[data-overview-reader=true]) .learner-course-intro h1{font-size:var(--learner-h1-size);line-height:var(--learner-h1-line);letter-spacing:-.025em}.learner-course-player[data-study-state=reading] .learner-study-description{display:block}.learner-course-player[data-study-state=reading] .learner-study-position{margin-bottom:.5rem;font-size:.75rem}.learner-study-document{min-width:0;min-height:calc(100dvh - var(--learner-header-height,0px));position:relative}.learner-course-player[data-overview-reader=true] .learner-study-document{min-height:auto}.learner-study-document>[data-slot=course-reader],.learner-study-contextual-tool{width:min(100%, var(--learner-reader-frame));max-inline-size:var(--learner-reader-frame);margin-inline:auto;padding-inline:2rem}.learner-study-document>[data-slot=course-reader]{scroll-margin-top:calc(var(--learner-header-height,0px) + 5rem);outline:none;padding-top:1rem;padding-bottom:4rem}.learner-study-document>[data-slot=course-reader]:has(>.learner-study-continuation){padding-bottom:0}.learner-study-continuation{z-index:1;margin-top:var(--learner-space-4);padding-bottom:var(--learner-space-12);background:0 0;border:0;position:relative}.learner-study-continuation>.learner-component{border-top:0;margin-block:0;padding-block:1.25rem}.learner-study-continuation:has([data-testid=learner-milestone]){position:static}.learner-outline-children{border-left:1px solid var(--border);margin-left:.75rem;padding:.375rem 0 .375rem .625rem}.learner-course-player[data-has-lesson-map=true] .learner-lesson-map{top:var(--learner-header-height,0px);z-index:40;width:var(--learner-lesson-map-width);bottom:0;display:block;position:fixed;inset-inline-start:0}.learner-lesson-map-panel{width:var(--learner-lesson-map-width,5rem);height:100%;max-height:100%;color:var(--muted-foreground);background:0 0;flex-direction:column;padding:.75rem .5rem 1rem;display:flex;position:absolute;inset:0 auto auto 0;overflow:visible}.learner-lesson-map-search{flex:none;align-items:center;width:4rem;min-height:2.75rem;padding-inline:.125rem;display:flex;position:relative;overflow:visible}.learner-lesson-map-search [data-slot=input-group]{z-index:2;border-color:var(--border);width:min(18rem,100vw - 1rem);height:2.5rem;position:absolute;inset-block-start:.125rem;inset-inline-start:.5rem}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-search [data-slot=input-group]{border-color:color-mix(in oklab, var(--border) 82%, transparent)}}.learner-lesson-map-search [data-slot=input-group]{background:var(--popover)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-search [data-slot=input-group]{background:color-mix(in oklab, var(--popover) 94%, transparent)}}.learner-lesson-map-search [data-slot=input-group]{box-shadow:none;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.learner-lesson-map-search-trigger[data-slot=button]{border-radius:var(--learner-radius-pill);width:2.75rem;height:2.75rem;box-shadow:none;background:0 0;border:0;position:relative}.learner-lesson-map-search-trigger[data-slot=button]:hover,.learner-lesson-map-search-trigger[data-slot=button]:focus-visible{background:var(--muted);color:var(--foreground)}.learner-lesson-map ol{flex-direction:column;flex:auto;gap:0;min-height:0;margin:.5rem 0 0;padding:0;list-style:none;display:flex;overflow:clip}.learner-lesson-map li{--lesson-map-indent:1rem;--lesson-map-line:.875rem;--lesson-map-weight:.125rem;flex:0 1.5rem;align-items:center;min-width:0;min-height:0;display:flex}.learner-lesson-map li[data-kind=root]{--lesson-map-line:1.625rem}.learner-lesson-map li[data-kind=content]{--lesson-map-line:1.25rem}.learner-lesson-map li[data-kind=content][data-density=medium]{--lesson-map-line:1.375rem}.learner-lesson-map li[data-kind=content][data-density=high]{--lesson-map-line:1.5rem}.learner-lesson-map li[data-state=current]{--lesson-map-line:2.5rem}.learner-lesson-map li:is(:hover,[data-scrubbed=true])+li+li+li{--lesson-map-line:1.125rem}.learner-lesson-map li:has(+li+li+li:is(:hover,[data-scrubbed=true])){--lesson-map-line:1.125rem}.learner-lesson-map li:has(+li+li+li .learner-lesson-map-item:focus-visible){--lesson-map-line:1.125rem}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible)+li+li+li{--lesson-map-line:1.125rem}.learner-lesson-map li:is(:hover,[data-scrubbed=true])+li+li{--lesson-map-line:1.625rem}.learner-lesson-map li:has(+li+li:is(:hover,[data-scrubbed=true])){--lesson-map-line:1.625rem}.learner-lesson-map li:has(+li+li .learner-lesson-map-item:focus-visible){--lesson-map-line:1.625rem}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible)+li+li{--lesson-map-line:1.625rem}.learner-lesson-map li:is(:hover,[data-scrubbed=true])+li{--lesson-map-line:2.25rem}.learner-lesson-map li:has(+li:is(:hover,[data-scrubbed=true])){--lesson-map-line:2.25rem}.learner-lesson-map li:has(+li .learner-lesson-map-item:focus-visible){--lesson-map-line:2.25rem}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible)+li{--lesson-map-line:2.25rem}.learner-lesson-map li:is(:hover,[data-scrubbed=true]){--lesson-map-line:3rem}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible){--lesson-map-line:3rem}.learner-lesson-map .learner-lesson-map-item{justify-content:start;align-items:center;gap:var(--learner-space-2);width:100%;height:100%;min-height:0;max-height:1.5rem;color:inherit;text-align:left;box-shadow:none;background:0 0;border:0;border-radius:.5rem;grid-template-columns:3.5rem;padding:0;display:grid;position:relative}.learner-lesson-map .learner-lesson-map-item:hover{color:var(--foreground)}.learner-lesson-map .learner-lesson-map-item[aria-disabled=true]{cursor:not-allowed}.learner-lesson-map .learner-lesson-map-item:focus-visible{box-shadow:none;background:0 0;outline:none}.learner-lesson-map-trace{--lesson-map-trace-color:var(--muted-foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-trace{--lesson-map-trace-color:color-mix(in oklab, var(--muted-foreground) 48%, transparent)}}.learner-lesson-map-trace{width:var(--lesson-map-line);height:var(--lesson-map-weight);border-radius:var(--learner-radius-pill);background:var(--lesson-map-trace-color);transition:width .16s var(--learner-motion-ease), background-color .16s var(--learner-motion-ease), opacity .16s var(--learner-motion-ease);margin-inline-start:var(--lesson-map-indent);display:block;position:relative}.learner-lesson-map li[data-nested=true] .learner-lesson-map-trace{width:calc(var(--lesson-map-line) - .25rem);margin-inline-start:calc(var(--lesson-map-indent) + .25rem)}.learner-lesson-map li[data-state=completed] .learner-lesson-map-trace{--lesson-map-trace-color:var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map li[data-state=completed] .learner-lesson-map-trace{--lesson-map-trace-color:color-mix(in oklab, var(--foreground) 58%, transparent)}}.learner-lesson-map li[data-next=true] .learner-lesson-map-trace{--lesson-map-trace-color:var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map li[data-next=true] .learner-lesson-map-trace{--lesson-map-trace-color:color-mix(in oklab, var(--foreground) 66%, transparent)}}.learner-lesson-map li[data-needs-review=true] .learner-lesson-map-trace{--lesson-map-trace-color:var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map li[data-needs-review=true] .learner-lesson-map-trace{--lesson-map-trace-color:color-mix(in oklab, var(--foreground) 76%, transparent)}}.learner-lesson-map li[data-state=current] .learner-lesson-map-trace{--lesson-map-trace-color:var(--course-accent,var(--foreground));box-shadow:none}.learner-lesson-map li[data-state=locked] .learner-lesson-map-trace{opacity:.32}.learner-lesson-map li:not([data-state=current]) .learner-lesson-map-item:focus-visible .learner-lesson-map-trace{--lesson-map-trace-color:var(--foreground);box-shadow:none}.learner-lesson-map-note-dot,.learner-lesson-map-lock-mark{border-radius:var(--learner-radius-pill);transition:inset-inline-start .16s var(--learner-motion-ease), opacity .16s var(--learner-motion-ease);position:absolute;inset-block-start:50%;inset-inline-start:calc(var(--lesson-map-indent) + var(--lesson-map-line) + .375rem);transform:translateY(-50%)}.learner-lesson-map-lock-mark{width:.5625rem;height:.5625rem;color:var(--muted-foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-lock-mark{color:color-mix(in oklab, var(--muted-foreground) 64%, transparent)}}.learner-lesson-map li:has(.learner-lesson-map-note-dot) .learner-lesson-map-lock-mark{inset-inline-start:calc(var(--lesson-map-indent) + var(--lesson-map-line) + 1.125rem)}.learner-lesson-map-note-dot{box-sizing:border-box;border:1px solid var(--muted-foreground);width:.375rem;height:.375rem}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-note-dot{border:1px solid color-mix(in oklab, var(--muted-foreground) 76%, transparent)}}.learner-lesson-map-note-dot{opacity:.9;transition:inset-inline-start .16s var(--learner-motion-ease), border-color .16s var(--learner-motion-ease), background-color .16s var(--learner-motion-ease), opacity .16s var(--learner-motion-ease);background:0 0}.learner-lesson-map li[data-state=current] .learner-lesson-map-note-dot{border-color:var(--course-accent,var(--foreground))}.learner-lesson-map li:is(:hover,[data-scrubbed=true]) .learner-lesson-map-note-dot{background:var(--muted-foreground)}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible) .learner-lesson-map-note-dot{background:var(--muted-foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map li:is(:hover,[data-scrubbed=true]) .learner-lesson-map-note-dot{background:color-mix(in oklab, var(--muted-foreground) 72%, transparent)}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible) .learner-lesson-map-note-dot{background:color-mix(in oklab, var(--muted-foreground) 72%, transparent)}}.learner-lesson-map li:is(:hover,[data-scrubbed=true]) .learner-lesson-map-note-dot{opacity:1}.learner-lesson-map li:has(.learner-lesson-map-item:focus-visible) .learner-lesson-map-note-dot{opacity:1}.learner-lesson-map li[data-state=current]:is(:hover,[data-scrubbed=true]) .learner-lesson-map-note-dot{background:var(--course-accent,var(--foreground))}.learner-lesson-map li[data-state=current]:has(.learner-lesson-map-item:focus-visible) .learner-lesson-map-note-dot{background:var(--course-accent,var(--foreground))}.learner-lesson-map-preview[data-slot=preview-card-content]{border-color:var(--foreground);width:min(19rem,100vw - 6.5rem);max-width:19rem}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-preview[data-slot=preview-card-content]{border-color:color-mix(in oklab, var(--foreground) 16%, transparent)}}.learner-lesson-map-preview[data-slot=preview-card-content]{background:var(--popover)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-preview[data-slot=preview-card-content]{background:color-mix(in oklab, var(--popover) 72%, transparent)}}.learner-lesson-map-preview[data-slot=preview-card-content]{box-shadow:none;text-transform:none;-webkit-backdrop-filter:blur(28px)saturate(124%);backdrop-filter:blur(28px)saturate(124%)}.learner-lesson-map-preview-content{flex-direction:column;gap:.625rem;min-width:0;display:flex}.learner-lesson-map-preview-meta{justify-content:space-between;align-items:center;gap:.625rem;min-width:0;display:flex}.learner-lesson-map-preview-meta>span:last-child{color:var(--muted-foreground);white-space:nowrap;align-items:center;gap:.3rem;font-size:.6875rem;line-height:1rem;display:inline-flex}.learner-lesson-map-preview-meta>span:first-child{color:var(--muted-foreground);text-overflow:ellipsis;white-space:nowrap;align-items:center;gap:.375rem;font-size:.625rem;font-weight:600;line-height:.875rem;display:inline-flex;overflow:hidden}.learner-lesson-map-preview-meta>span:first-child>svg{flex:none;width:.8125rem;height:.8125rem}.learner-lesson-map-preview-meta i{border-radius:var(--learner-radius-pill);background:var(--muted-foreground);width:.375rem;height:.375rem}.learner-lesson-map-preview-meta [data-state=completed] i{background:var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-lesson-map-preview-meta [data-state=completed] i{background:color-mix(in oklab, var(--foreground) 58%, transparent)}}.learner-lesson-map-preview-meta [data-state=current] i{background:var(--course-accent,var(--foreground))}.learner-lesson-map-preview-meta [data-state=locked] i{opacity:.45}.learner-lesson-map-preview-content>strong{color:var(--foreground);text-wrap:balance;font-size:.9375rem;font-weight:600;line-height:1.25rem}.learner-lesson-map-preview-parent{color:var(--muted-foreground);text-overflow:ellipsis;white-space:nowrap;font-size:.75rem;line-height:1rem;overflow:hidden}.learner-lesson-map-preview-progress{flex-direction:column;gap:.375rem;padding-top:.125rem;display:flex}.learner-lesson-map-preview-progress [data-slot=progress]{gap:0}.learner-lesson-map-preview-progress [data-slot=progress-track]{height:.1875rem}.learner-lesson-map-preview-progress [data-slot=progress-indicator]{background:var(--course-accent,var(--primary))}.learner-lesson-map-preview-progress>span,.learner-lesson-map-preview-notes,.learner-lesson-map-preview-review{color:var(--muted-foreground);font-size:.6875rem;line-height:1rem}.learner-lesson-map-preview-notes,.learner-lesson-map-preview-review{align-items:center;gap:.375rem;padding-top:.125rem;display:inline-flex}.learner-lesson-map-preview-notes svg,.learner-lesson-map-preview-review svg{width:.75rem;height:.75rem;color:var(--warning,var(--course-accent,var(--primary)))}.learner-lesson-map-preview-review svg{color:var(--muted-foreground)}.learner-lesson-map-scrub-preview{display:none}.learner-lesson-map-empty{z-index:2;width:min(18rem,100vw - 1rem);padding:var(--learner-space-3);border:1px solid 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/ 2))}.learner-course-experience[data-learner-width=wide] .learner-course-player[data-overview-reader=true] .learner-study-introduction{width:min(calc(100% - 2 * var(--learner-page-gutter)), 65rem);grid-template-columns:minmax(0,1fr) minmax(14rem,18rem);margin-inline-start:var(--learner-wide-page-start);margin-inline-end:auto}.learner-course-experience[data-learner-width=wide] .learner-course-player[data-overview-reader=true] .learner-course-content{width:min(65rem, calc(100% - var(--learner-wide-page-start) - var(--learner-space-12) - var(--learner-page-gutter)));margin-inline-start:calc(var(--learner-wide-page-start) + var(--learner-space-12));margin-inline-end:auto}}.learner-course-experience[data-learner-text-scale=large] .learner-course-player :is(button,input,textarea,select,[data-slot=button]){font-size:var(--learner-ui-size);line-height:var(--learner-ui-line)}.learner-course-experience[data-learner-contrast=high]{--muted-foreground:var(--foreground)}@supports 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:before,.learner-course-player[data-study-state] :after{scroll-behavior:auto;transition-duration:.01ms;animation-duration:.01ms}}.learner-course-experience[data-learner-width=wide] :is(.content-editor[data-mode=reader],[data-learner-family]){--learner-reading-measure:var(--learner-measure-wide)}.learner-course-player[data-ambient-cover=true]{isolation:isolate;position:relative}.learner-course-ambience{pointer-events:none;z-index:-1;height:min(62rem,110svh);position:absolute;inset:0 0 auto;overflow:hidden;-webkit-mask-image:linear-gradient(#000 0% 18%,#0000 95%);mask-image:linear-gradient(#000 0% 18%,#0000 95%)}.learner-course-ambience img{object-fit:cover;filter:blur(64px)saturate(1.25);opacity:.22;width:100%;height:100%;transform:scale(1.12)}.dark .learner-course-ambience img{opacity:.38}.learner-course-player[data-ambient-cover=true] .learner-study-layout{background:0 0}.learner-course-experience[data-learner-contrast=high] .learner-course-ambience{display:none}@media (forced-colors:active),print{.learner-course-ambience{display:none}}.learner-course-player[data-player=true]{--learner-reader-frame:58rem;--player-hero-background:linear-gradient(145deg, #ffffffd9, #ffffff8c);--player-hero-shadow:inset 0 0 0 1px #fff9, 0 16px 60px -32px #29252424;--player-cover-shadow:0 12px 32px -20px #29252438;padding-bottom:calc(7rem + env(safe-area-inset-bottom));background:var(--background);min-height:100svh}.learner-course-player[data-player=true] .learner-course-ambience{height:58rem;max-height:110svh}.learner-course-player[data-player=true] .learner-course-ambience img{opacity:.13}.dark .learner-course-player[data-player=true]{--player-hero-background:linear-gradient(155deg, #ffffff20, #ffffff08 48%, transparent 92%);--player-hero-shadow:inset 0 1px 0 #ffffff30;--player-cover-shadow:0 18px 50px -24px #0008}.learner-player-toolbar{inset:auto 1rem calc(1rem + env(safe-area-inset-bottom));z-index:40;border:1px solid var(--foreground);align-items:center;gap:1rem;width:min(100% - 2rem,58rem);margin-inline:auto;padding:.5rem .75rem .5rem 1.25rem;display:flex;position:fixed}@supports (color:color-mix(in lab, red, red)){.learner-player-toolbar{border:1px solid color-mix(in oklab, var(--foreground) 10%, transparent)}}.learner-player-toolbar{background:var(--background);border-radius:999px}@supports (color:color-mix(in lab, red, red)){.learner-player-toolbar{background:color-mix(in oklab, var(--background) 55%, transparent)}}.learner-player-toolbar{-webkit-backdrop-filter:blur(24px)saturate(1.35);backdrop-filter:blur(24px)saturate(1.35);box-shadow:inset 0 1px 0 var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-player-toolbar{box-shadow:inset 0 1px 0 color-mix(in oklab, var(--foreground) 8%, transparent)}}.learner-player-toolbar{color:var(--muted-foreground)}.learner-player-progress{font-variant-numeric:tabular-nums;flex:1;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;min-width:0;font-size:.8125rem;display:grid}.learner-player-progress>span:first-child{white-space:nowrap}.learner-player-progress>span:last-child{text-align:right;min-width:3ch;color:var(--foreground);grid-area:1/3;font-weight:500}.learner-player-progress-segments{grid-area:1/2;align-items:center;gap:3px;min-width:0;display:flex}.learner-player-progress-segment{cursor:pointer;background:0 0;border:0;border-radius:5px;flex:1;min-width:0;height:2rem;padding:0}.learner-player-progress-segment>span{background:var(--foreground);border-radius:999px;width:100%;height:4px;display:block}@supports (color:color-mix(in lab, red, red)){.learner-player-progress-segment>span{background:color-mix(in oklab, var(--foreground) 12%, transparent)}}.learner-player-progress-segment>span{overflow:hidden}.learner-player-progress-segment>span>span{border-radius:inherit;background:var(--foreground);transform-origin:0;width:100%;height:100%;transition:transform .65s cubic-bezier(.22,1,.36,1);display:block}.learner-player-progress-segment:is(:hover,:focus-visible)>span{background:var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-player-progress-segment:is(:hover,:focus-visible)>span{background:color-mix(in oklab, var(--foreground) 65%, transparent)}}.learner-player-progress-segment:focus-visible{outline:2px solid var(--foreground);outline-offset:2px}.learner-player-step-preview{border-color:var(--foreground);border-radius:1rem;flex-direction:column;gap:.75rem;width:min(19rem,100vw - 2rem);padding:1.125rem;display:flex}@supports (color:color-mix(in lab, red, red)){.learner-player-step-preview{border-color:color-mix(in oklab, var(--foreground) 10%, transparent)}}.learner-player-step-preview{background:var(--background)}@supports (color:color-mix(in lab, red, red)){.learner-player-step-preview{background:color-mix(in oklab, var(--background) 85%, transparent)}}.learner-player-step-preview{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);color:var(--foreground);box-shadow:0 12px 36px -12px #0006}.learner-player-step-preview-meta{color:var(--muted-foreground);justify-content:space-between;gap:1rem;font-size:.75rem;display:flex}.learner-player-step-preview-meta>span:last-child{align-items:center;gap:.375rem;display:inline-flex}.learner-player-step-preview-meta svg{width:.875rem;height:.875rem}.learner-player-step-preview strong{font-size:1rem;line-height:1.4}.learner-player-step-preview p{color:var(--muted-foreground);font-size:.875rem}@media print{.learner-player-toolbar{display:none}}.learner-course-player[data-player=true] .learner-study-layout{margin-inline:0}.learner-course-player[data-player=true]:is([data-study-state=overview],[data-study-state=reading]) .learner-study-introduction{background:var(--player-hero-background);width:min(100% - 4rem,64rem);box-shadow:var(--player-hero-shadow);border-radius:2rem;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:center;gap:clamp(2rem,4vw,4rem);margin:0 auto 3rem;padding:clamp(1.5rem,3.5vw,3rem);display:grid;overflow:hidden}.learner-course-player[data-player=true]:is([data-study-state=overview],[data-study-state=reading]) .learner-study-cover{aspect-ratio:1;min-height:0;box-shadow:var(--player-cover-shadow);border-radius:1.25rem;grid-area:1/1;margin:0;overflow:hidden}.learner-course-player[data-player=true]:is([data-study-state=overview],[data-study-state=reading]) [data-slot=course-context-surface]{flex-direction:column;grid-area:1/2;gap:1.75rem;padding:0;display:flex}.learner-course-player[data-player=true] .learner-study-introduction h1{letter-spacing:-.04em;text-wrap:balance;font-size:clamp(2rem,3.8vw,3.5rem);line-height:1.06}.learner-course-player[data-player=true] .learner-session-resume-controls>button,.learner-course-player[data-player=true] .learner-session-resume-controls>a{border-radius:999px;min-height:3rem;padding-inline:1.5rem}.learner-course-player[data-player=true] .learner-session-overview{width:min(100% - 4rem,58rem);margin:0 auto 4rem}.learner-course-player[data-player=true][data-study-state=reading] .learner-study-document{width:min(100% - 4rem,58rem);box-shadow:none;background:0 0;border-radius:0;margin:0 auto 3rem;padding:0}.learner-course-player[data-player=true] .learner-session-plan-heading{margin-bottom:.5rem}.learner-course-player[data-player=true] .learner-session-plan-heading h2{color:var(--muted-foreground);font-size:.875rem;font-weight:500}.learner-course-player[data-player=true] .learner-session-progress{display:none}.learner-course-player[data-player=true] .learner-session-plan ol{flex-direction:column;gap:0;display:flex}.learner-course-player[data-player=true] .learner-session-plan li{border-bottom:0;align-items:center;gap:clamp(1rem,3vw,2rem);padding:1.125rem 0;position:relative}.learner-course-player[data-player=true] .learner-session-plan li .learner-session-step-number{width:2rem;height:2rem;color:var(--muted-foreground);font-variant-numeric:tabular-nums;background:0 0;align-self:flex-start;margin-top:.25rem;font-size:1rem}.learner-course-player[data-player=true] .learner-session-step-link[data-slot=button]{letter-spacing:-.025em;background:0 0;font-size:clamp(1.25rem,2.3vw,1.625rem);font-weight:500;line-height:1.3;position:static}.learner-course-player[data-player=true] .learner-session-step-link:after{content:"";position:absolute;inset:0}.learner-course-player[data-player=true] .learner-session-step-copy small{max-width:58ch;margin-top:.5rem;font-size:.9375rem;line-height:1.65}.learner-course-player[data-player=true] .learner-session-step-state{flex-shrink:0;font-size:.75rem}.learner-session-step-enter{width:2.75rem;height:2.75rem;color:var(--muted-foreground);border:1px solid var(--foreground);border-radius:50%;flex-shrink:0;place-items:center;display:grid}@supports (color:color-mix(in lab, red, red)){.learner-session-step-enter{border:1px solid color-mix(in oklab, var(--foreground) 12%, transparent)}}.learner-session-step-enter{transition:background .18s,color .18s,transform .18s}.learner-session-step-enter svg{width:1.125rem;height:1.125rem}li[data-state=current] .learner-session-step-enter{background:var(--foreground);color:var(--background);border-color:#0000}.learner-session-plan li:has(a:hover,button:hover) .learner-session-step-enter{background:var(--foreground);color:var(--background);transform:translate(3px)}.learner-course-player[data-player=true] .learner-session-plan li:focus-within{outline:2px solid var(--foreground);outline-offset:4px}@media (max-width:640px){.learner-course-player[data-player=true] .learner-session-plan li{gap:.75rem}.learner-course-player[data-player=true] .learner-session-step-state{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}}@media (prefers-reduced-motion:reduce){.learner-session-step-enter{transition:none}}@media (max-width:640px){.learner-player-toolbar{gap:.5rem;padding-left:1rem}.learner-player-progress{grid-template-columns:minmax(0,1fr) auto;gap:.75rem}.learner-player-progress-segments{grid-column:1}.learner-player-progress>span:last-child{grid-column:2}.learner-player-progress>span:first-child{display:none}.learner-course-player[data-player=true]:is([data-study-state=overview],[data-study-state=reading]) .learner-study-introduction{border-radius:1.5rem;grid-template-columns:1fr;gap:1.5rem;width:calc(100% - 2rem);padding:1.25rem}.learner-course-player[data-player=true]:is([data-study-state=overview],[data-study-state=reading]) .learner-study-cover{aspect-ratio:16/10}.learner-course-player[data-player=true]:is([data-study-state=overview],[data-study-state=reading]) [data-slot=course-context-surface]{grid-area:2/1}.learner-course-player[data-player=true] .learner-session-overview{width:calc(100% - 2rem)}.learner-course-player[data-player=true][data-study-state=reading] .learner-study-document{width:100%}}.dark .learner-course-player[data-player=true] .learner-course-ambience img{opacity:.34}.learner-course-player[data-player=true] .learner-study-introduction{--muted-foreground:var(--foreground)}@supports (color:color-mix(in lab, red, red)){.learner-course-player[data-player=true] .learner-study-introduction{--muted-foreground:color-mix(in oklab, var(--foreground) 75%, var(--background))}}.learner-course-experience[data-learner-contrast=high] .learner-player-toolbar,.learner-course-experience[data-learner-contrast=high] .learner-course-player[data-player=true] .learner-study-document{background:var(--background);-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none}@media (prefers-reduced-transparency:reduce),(forced-colors:active){.learner-player-toolbar,.learner-course-player[data-player=true] .learner-study-document{background:var(--background);-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none}}.learner-course-experience[data-learner-motion=reduced] .learner-player-progress-segment>span>span{transition:none}@media (prefers-reduced-motion:reduce){.learner-player-progress-segment>span>span{transition:none}}}@layer learner-foundation,learner-prose,learner-surfaces,learner-motion,learner-flow,learner-aside,learner-technical,learner-media,learner-deck,learner-practice,learner-navigation,learner-enrollment,learner-engagement,learner-journey;
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