.learn-kit{min-width:0;color:var(--ui-text);font-family:var(--ui-font)}.learn-retained-files{flex-wrap:wrap;gap:8px;display:flex}.learn-retained-files>div{align-items:center;gap:4px;min-width:0;display:flex}.learn-kit h2,.learn-kit h3,.learn-kit h4,.learn-activity h3,.learn-discussion h3{font-family:var(--galeth-font-head,var(--ui-font))}.learn-kit-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.learn-kit-stack{gap:24px;min-width:0;display:grid}.learn-kit-intro{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:24px;display:flex}.learn-kit-intro p{color:var(--ui-muted);max-width:58ch;font-size:var(--ui-type-body);margin-top:8px;line-height:1.65}.learn-kit-intro h2{font-size:24px;font-weight:650}.learn-eyebrow{color:var(--ui-accent);letter-spacing:.08em;text-transform:uppercase;font-size:11px;font-weight:650}.learn-course-card,.learn-course-hero,.learn-activity-panel,.learn-activity,.learn-discussion{border:1px solid var(--ui-border);border-radius:var(--ui-radius-card);background:var(--ui-surface);box-shadow:var(--ui-shadow);min-width:0;overflow:hidden}.learn-course-cover{isolation:isolate;background:linear-gradient(125deg, color-mix(in oklab, var(--ui-primary) 75%, var(--ui-dark)), var(--ui-tertiary));min-height:230px;color:var(--ui-on-primary);justify-content:space-between;align-items:center;padding:36px;display:flex;position:relative;overflow:hidden}.learn-course-cover>div:not(.learn-cover-orbits){z-index:1;gap:12px;max-width:70%;display:grid;position:relative}.learn-course-cover strong{font:650 clamp(24px, 3vw, 36px)/1.2 var(--galeth-font-head,var(--ui-font));overflow-wrap:anywhere}.learn-course-cover span{text-transform:uppercase;letter-spacing:.12em;opacity:.85;font-size:10px}.learn-course-cover small{opacity:.85;font-size:12px}.learn-course-cover img{aspect-ratio:1;object-fit:contain;width:min(25%,140px);filter:drop-shadow(0 14px 22px color-mix(in oklab, var(--ui-dark) 20%, transparent));position:relative}.learn-course-cover--compact{min-height:175px;padding:24px}.learn-course-cover--compact strong{font-size:21px}.learn-cover-orbits{pointer-events:none;z-index:0;position:absolute;top:0;bottom:0;left:0;right:0}.learn-cover-orbits span{aspect-ratio:1;border:1px solid color-mix(in oklab, var(--ui-on-primary) 15%, transparent);border-radius:50%;width:300px;position:absolute;top:-100px;right:-50px}.learn-cover-orbits span:nth-child(2){width:420px;top:-160px;right:-110px}.learn-cover-orbits span:nth-child(3){width:540px;top:-220px;right:-170px}.learn-course-card-body{gap:16px;padding:22px;display:grid}.learn-course-teacher{flex-wrap:wrap;align-items:center;gap:9px;min-width:0;font-size:12px;display:flex}.learn-course-teacher>.ui-badge{margin-left:auto}.learn-course-progress{color:var(--ui-muted);flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:11px;display:flex}.learn-course-next{border-radius:var(--ui-radius);background:var(--ui-soft);gap:5px;padding:12px 14px;display:grid}.learn-course-next small{color:var(--ui-muted);font-size:11px}.learn-course-next strong{font-size:13px;font-weight:550}.learn-course-actions{flex-wrap:wrap;justify-content:space-between;gap:8px;display:flex}.learn-course-hero-bottom{grid-template-columns:1fr minmax(220px,32%);gap:32px;padding:26px 32px;display:grid}.learn-course-hero-bottom p{color:var(--ui-muted);max-width:60ch;margin-top:14px;font-size:13px;line-height:1.7}.learn-course-hero-progress{color:var(--ui-muted);gap:12px;font-size:11px;display:grid}.learn-course-hero-progress .ui-button{justify-self:start}.learn-activity-card{border:1px solid var(--ui-border);border-radius:var(--ui-radius);background:var(--ui-surface);min-width:0;transition:border-color var(--ui-duration), box-shadow var(--ui-duration);align-items:center;gap:14px;padding:20px;display:flex}.learn-activity-card:hover{border-color:color-mix(in oklab, var(--ui-accent) 40%, var(--ui-border));box-shadow:var(--ui-shadow)}.learn-activity-card h4{overflow-wrap:anywhere;margin:6px 0;font-size:14px;font-weight:600}.learn-activity-card p{color:var(--ui-muted);margin-bottom:10px;font-size:12px;line-height:1.6}.learn-activity-symbol{border-radius:var(--ui-radius);background:color-mix(in oklab, var(--ui-accent) 9%, var(--ui-surface));width:44px;height:48px;color:var(--ui-accent);flex-shrink:0;place-items:center;font-size:22px;font-weight:550;display:grid}.learn-activity-card-main{flex:1;min-width:0}.learn-activity-card-meta{color:var(--ui-muted);flex-wrap:wrap;align-items:center;gap:10px;font-size:11px;display:flex}.learn-assignment-card{border-radius:var(--ui-radius-card);border:1px solid var(--ui-border);overflow:hidden}.learn-assignment-date{background:var(--ui-soft);align-items:center;gap:10px;padding:14px 20px;font-size:12px;display:flex}.learn-assignment-date span{color:var(--ui-muted)}.learn-assignment-card .learn-activity-card{border:0;border-radius:0}.learn-course-content .ui-accordion{background:var(--ui-surface)}.learn-unit-content{gap:10px;display:grid}.learn-unit-content>p{color:var(--ui-muted);font-size:13px;line-height:1.6}.learn-activity-panel{padding:24px}.learn-activity-panel>header{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}.learn-activity-panel>header h3{font-size:18px;font-weight:600}.learn-panel-filters{grid-template-columns:1fr 1fr auto;align-items:end;gap:14px;margin:20px 0;display:grid}.learn-panel-items{gap:12px;display:grid}.learn-panel-items--grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-panel-items--grid .learn-activity-card{flex-wrap:wrap;align-items:flex-start}.learn-panel-empty,.learn-discussion-empty{text-align:center;justify-items:center;gap:14px;padding:40px 24px;display:grid}.learn-panel-empty>span,.learn-discussion-empty>span{color:var(--ui-accent);font-size:32px}.learn-panel-empty h4,.learn-discussion-empty h4{font-size:16px;font-weight:600}.learn-activity-head{justify-content:space-between;align-items:flex-start;gap:18px;padding:26px 28px 20px;display:flex}.learn-activity-head h3{margin:8px 0;font-size:21px;font-weight:600}.learn-activity-head p{color:var(--ui-muted);max-width:70ch;font-size:13px;line-height:1.7}.learn-activity>.ui-progress{margin:0 28px}.learn-activity-body{min-width:0;padding:24px 28px}.learn-activity-foot{border-top:1px solid var(--ui-border);background:color-mix(in oklab, var(--ui-soft) 55%, var(--ui-surface));justify-content:space-between;align-items:center;gap:16px;padding:18px 28px;display:flex}.learn-activity-foot>span{color:var(--ui-muted);font-size:12px}.learn-feedback{padding:0 28px 22px}.learn-activity>.ui-alert{margin:0 28px 18px}.learn-question-list{gap:28px;display:grid}.learn-question{border:0;min-width:0;margin:0;padding:0}.learn-question legend{align-items:flex-start;gap:12px;margin-bottom:14px;font-size:14px;font-weight:550;line-height:1.7;display:flex}.learn-question legend>span{color:var(--ui-accent);font-variant-numeric:tabular-nums;padding-top:2px;font-size:12px}.learn-choices{gap:10px;display:grid}.learn-choices>.ui-button{text-align:left;justify-content:flex-start;width:100%;height:auto;min-height:50px;padding:14px 16px}.learn-choices .ui-button-label{white-space:normal;align-items:center;gap:12px;width:100%;line-height:1.65;display:flex}.learn-option-index{border:1px solid var(--ui-border);min-width:26px;height:26px;color:var(--ui-muted);border-radius:8px;place-items:center;font-size:11px;display:inline-grid}.learn-choice-check{margin-left:auto;font-weight:600}.learn-choices--binary{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-explanation,.learn-help{color:var(--ui-muted);margin-top:14px;font-size:12px;line-height:1.7}.learn-question[data-result=false]{border-radius:var(--ui-radius);background:color-mix(in oklab, var(--ui-warning) 5%, var(--ui-surface));padding:12px}.learn-cloze{font-size:17px;line-height:2.8}.learn-cloze-gap{vertical-align:middle;width:min(180px,100%);margin:5px 8px;line-height:1.5;display:inline-flex}.learn-cloze-gap .ui-field{width:100%}.learn-cloze-gap[data-result=true] input{border-color:var(--ui-success)}.learn-cloze-gap[data-result=false] input{border-color:var(--ui-warning)}.learn-match{grid-template-columns:1fr 30px 1fr;align-items:center;gap:12px;display:grid}.learn-match>div{gap:14px;display:grid}.learn-match>div>.ui-button{text-align:left;justify-content:flex-start;height:auto;min-height:60px;padding:12px}.learn-match .ui-button-label{white-space:normal;align-items:center;gap:10px;line-height:1.6;display:flex}.learn-match-connector{color:var(--ui-accent);text-align:center;font-size:24px}.learn-order{gap:12px;margin:0;padding:0;list-style:none;display:grid}.learn-order-item{border:1px solid var(--ui-border);border-radius:var(--ui-radius);background:var(--ui-surface);align-items:center;gap:12px;padding:12px;display:flex}.learn-order-item>div:not(.ui-action-group){flex:1;gap:4px;min-width:0;display:grid}.learn-order-item strong{font-size:13px;font-weight:550}.learn-order-item small{color:var(--ui-muted);font-size:12px}.learn-order-item[data-dragging=true]{box-shadow:var(--ui-shadow-overlay);border-color:var(--ui-accent);z-index:2}.learn-drag-handle{touch-action:none;cursor:grab;font-size:21px}.learn-order-number{background:var(--ui-soft);min-width:28px;height:28px;color:var(--ui-accent);border-radius:50%;place-items:center;font-size:12px;display:grid}.learn-categories{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.learn-category{border:1px dashed var(--ui-border);border-radius:var(--ui-radius);background:var(--ui-soft);min-height:190px;transition:background var(--ui-duration), border-color var(--ui-duration);flex-direction:column;gap:16px;padding:18px;display:flex}.learn-category h4{font-size:13px;font-weight:600}.learn-category-items{flex-direction:column;flex:1;gap:8px;display:flex}.learn-category-items>div>.ui-button{width:100%;height:auto;padding:10px}.learn-category-items .ui-button-label{white-space:normal}.learn-category[data-over=true]{border-color:var(--ui-accent);background:color-mix(in oklab, var(--ui-accent) 10%, var(--ui-surface))}.learn-wordsearch{grid-template-columns:minmax(0,1fr) 190px;align-items:start;gap:28px;display:grid}.learn-wordsearch-scroll{min-width:0;overflow-x:auto}.learn-letter-grid{touch-action:none;border-radius:var(--ui-radius-card);background:var(--ui-soft);gap:5px;min-width:min-content;padding:8px;display:grid}.learn-letter{aspect-ratio:1;min-width:24px;font:550 clamp(12px, 1.5vw, 16px) var(--galeth-font-head,var(--ui-font));color:var(--ui-text);background:var(--ui-surface);cursor:crosshair;-webkit-user-select:none;user-select:none;transition:color var(--ui-duration), background var(--ui-duration), transform var(--ui-duration);border:1px solid #0000;border-radius:8px}.learn-letter[data-selected=true]{background:var(--ui-primary);color:var(--ui-on-primary);transform:scale(.94)}.learn-letter[data-found=true]{background:color-mix(in oklab, var(--ui-success) 18%, var(--ui-surface));color:var(--ui-text);border-color:color-mix(in oklab, var(--ui-success) 50%, var(--ui-border))}.learn-word-list{gap:12px;font-size:13px;display:grid}.learn-word-list>span[data-found=true]{color:var(--ui-success);text-decoration:line-through}.learn-word-list p{color:var(--ui-muted);font-size:11px;line-height:1.7}.learn-crossword-layout{grid-template-columns:minmax(0,1fr) 1fr;gap:28px;display:grid}.learn-crossword{align-self:start;gap:4px;display:grid}.learn-crossword-block{background:var(--ui-soft);aspect-ratio:1;border-radius:7px}.learn-crossword-cell{aspect-ratio:1;min-width:0;position:relative}.learn-crossword-cell>span{z-index:1;color:var(--ui-accent);font-size:10px;position:absolute;top:3px;left:5px}.learn-crossword-cell .ui-field,.learn-crossword-cell .ui-input-wrap{height:100%}.learn-crossword-cell .ui-field>label{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.learn-crossword-cell input{text-align:center;width:100%;min-width:0;height:100%;font:600 18px var(--galeth-font-head,var(--ui-font));border-radius:7px;padding:10px 2px 2px}.learn-clues{gap:16px;display:grid}.learn-clues h4{margin-bottom:8px;font-size:13px;font-weight:600}.learn-clues .ui-button{text-align:left;width:100%;height:auto;padding:10px 0}.learn-clues .ui-button-label{white-space:normal;line-height:1.7}.learn-flashcard-meta{color:var(--ui-muted);justify-content:space-between;align-items:center;margin-bottom:16px;font-size:12px;display:flex}.learn-flashcard{border-radius:var(--ui-radius-card);border:1px solid color-mix(in oklab, var(--ui-secondary) 30%, var(--ui-border));background:linear-gradient(135deg, var(--ui-soft), var(--ui-surface));width:100%;min-height:260px;color:var(--ui-text);text-align:center;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:22px;padding:28px;display:flex}.learn-flashcard-face{perspective:900px;gap:22px;display:grid}.learn-flashcard-face>span{color:var(--ui-accent);font-size:12px}.learn-flashcard strong{font:600 clamp(21px, 3vw, 30px)/1.5 var(--galeth-font-head,var(--ui-font))}.learn-flashcard p,.learn-flashcard small{color:var(--ui-muted);font-size:12px}.learn-flashcard-actions{flex-wrap:wrap;justify-content:center;gap:14px;margin-top:20px;display:flex}.learn-hotspot{border-radius:var(--ui-radius-card);background:var(--ui-soft);position:relative;overflow:hidden}.learn-hotspot>img{width:100%;height:auto;display:block}.learn-hotspot .learn-hotspot-marker{z-index:1;width:42px;height:42px;box-shadow:var(--ui-shadow);border-radius:50%;position:absolute;transform:translate(-50%,-50%)}.learn-hotspot-legend{color:var(--ui-muted);flex-wrap:wrap;gap:18px;margin-top:16px;font-size:12px;display:flex}.learn-scenario-trail{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.learn-scenario{background:var(--ui-soft);border-radius:var(--ui-radius-card);padding:28px}.learn-scenario-icon{color:var(--ui-accent);font-size:35px}.learn-scenario h4{margin:16px 0 10px;font-size:20px;font-weight:600}.learn-scenario p{color:var(--ui-muted);margin-bottom:22px;font-size:14px;line-height:1.8}.learn-assignment-summary{color:var(--ui-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;font-size:12px;display:flex}.learn-rubric{border:1px solid var(--ui-border);background:var(--ui-soft);border-radius:var(--ui-radius);margin:22px 0;padding:22px}.learn-rubric h4{margin-bottom:14px;font-size:13px;font-weight:600}.learn-rubric ol{gap:12px;margin:0;padding:0;list-style:none;display:grid}.learn-rubric li{color:var(--ui-muted);gap:10px;font-size:13px;line-height:1.6;display:flex}.learn-rubric li span{color:var(--ui-accent);font-weight:600}.learn-attachment-picker{margin-top:12px}.learn-attachment-list{flex-wrap:wrap;gap:10px;margin:10px 0;display:flex}.learn-attachment-chip,.learn-attachment-link{border:1px solid var(--ui-border);border-radius:var(--ui-radius-sm);background:var(--ui-surface);min-width:0;max-width:100%;color:var(--ui-text);align-items:center;gap:10px;padding:8px 10px;font-size:12px;text-decoration:none;display:flex}.learn-attachment-chip>span:not(:first-child),.learn-attachment-link>span:not(:first-child){overflow-wrap:anywhere;min-width:0}.learn-attachment-chip img,.learn-attachment-link img{object-fit:cover;border-radius:7px;width:46px;height:46px}.learn-attachment-chip small,.learn-attachment-link small{color:var(--ui-muted);margin-top:4px;font-size:10px;display:block}.learn-field-error{color:var(--ui-error);margin-top:8px;font-size:12px}.learn-discussion-head{border-bottom:1px solid var(--ui-border);justify-content:space-between;align-items:flex-start;gap:16px;padding:26px;display:flex}.learn-discussion-head h3{margin-top:8px;font-size:20px;font-weight:600}.learn-discussion-head p{color:var(--ui-muted);max-width:70ch;margin-top:10px;font-size:13px;line-height:1.7}.learn-discussion>.learn-comment-composer{margin:24px}.learn-comment-composer{border:1px solid var(--ui-border);border-radius:var(--ui-radius);background:var(--ui-surface);margin-top:14px;padding:16px}.learn-comment-composer .ui-textarea{resize:vertical}.learn-reply-context{color:var(--ui-muted);margin-bottom:12px;font-size:12px}.learn-composer-tools{justify-content:space-between;align-items:center;gap:10px;margin-top:8px;display:flex}.learn-composer-tools>span,.learn-composer-actions>small{color:var(--ui-muted);font-size:10px}.learn-composer-actions{border-top:1px solid var(--ui-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:12px;padding-top:12px;display:flex}.learn-comment-list{padding:0 24px 24px}.learn-comment{min-width:0;padding-top:24px}.learn-comment+.learn-comment{border-top:1px solid var(--ui-border);margin-top:20px}.learn-comment-main{align-items:flex-start;gap:12px;min-width:0;display:flex}.learn-comment-content{flex:1;min-width:0}.learn-comment-content>header{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.learn-comment-content>header strong{font-size:13px;font-weight:600}.learn-comment-content>header time,.learn-comment-content>header>span:not(.ui-avatar):not(.ui-badge){color:var(--ui-muted);font-size:10px}.learn-comment-content>header>.ui-button:last-child{margin-left:auto}.learn-comment-text{white-space:pre-wrap;overflow-wrap:anywhere;margin:10px 0;font-size:13px;line-height:1.85}.learn-comment-text code{background:var(--ui-soft);border-radius:5px;padding:2px 6px;font-size:12px}.learn-comment-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;display:flex}.learn-reactions{flex-wrap:wrap;gap:5px;display:flex}.learn-emoji-grid{grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.learn-emoji-grid .ui-button{font-size:20px}.learn-comment-children{padding-left:min(24px, calc(24px - var(--comment-depth,0) * 10px));border-left:1px solid var(--ui-border);margin-left:15px}.learn-comment[style*="--comment-depth: 2"] .learn-comment-children{border-left:0;margin-left:0;padding-left:0}.learn-comment-deleted{color:var(--ui-muted);font-size:12px;font-style:italic;line-height:1.7}.learn-comment-skeleton{gap:12px;padding:22px 0;display:flex}.learn-comment-skeleton>div{flex:1}.learn-discussion>.ui-alert{margin:0 24px 16px}.learn-video-player{border:1px solid var(--ui-border);border-radius:var(--ui-radius-card);background:var(--ui-surface);min-width:0;overflow:hidden}.learn-video-stage{aspect-ratio:16/9;background:var(--ui-dark);position:relative;overflow:hidden}.learn-video-stage video{object-fit:contain;width:100%;height:100%}.learn-video-play{pointer-events:none;place-items:center;display:grid;position:absolute;top:0;bottom:0;left:0;right:0}.learn-video-play .ui-button{pointer-events:auto;width:68px;height:68px;box-shadow:var(--ui-shadow-overlay);border-radius:50%}.learn-video-stage-label{pointer-events:none;justify-content:space-between;align-items:center;gap:12px;display:flex;position:absolute;top:16px;left:16px;right:16px}.learn-video-stage-label>span:not(.ui-badge){background:color-mix(in oklab, var(--ui-dark) 70%, transparent);color:#fff;border-radius:99px;padding:6px 10px;font-size:11px}.learn-video-loading{color:#fff;background:color-mix(in oklab, var(--ui-dark) 75%, transparent);border-radius:9px;padding:7px 12px;font-size:12px;position:absolute;bottom:16px;left:16px}.learn-video-timeline{padding:16px 22px 20px;position:relative}.learn-video-timeline .ui-slider-field>div:first-child{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.learn-video-markers{margin:0 8px;position:relative}.learn-video-marker{background:var(--ui-primary);width:22px;height:22px;color:var(--ui-on-primary);cursor:pointer;border:2px solid var(--ui-surface);border-radius:50%;font-size:10px;font-weight:600;position:absolute;top:-8px;transform:translate(-50%)}.learn-video-marker[data-answered=true]{background:var(--ui-success);color:var(--ui-on-success)}.learn-video-controls{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:8px 18px 18px;display:flex}.learn-video-time{font-variant-numeric:tabular-nums;color:var(--ui-muted);font-size:11px}.learn-video-volume{width:70px}.learn-video-volume .ui-slider-field>div:first-child{display:none}.learn-video-controls .ui-field{flex:none;width:auto;max-width:100%}.learn-video-controls .ui-field>label{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.learn-video-controls .ui-field .ui-select-trigger{flex-shrink:0;width:80px}.learn-video-lower{border-top:1px solid var(--ui-border);grid-template-columns:minmax(0,1fr) minmax(0,1fr);display:grid}.learn-video-lower>div{min-width:0;padding:22px}.learn-video-lower>div+div{border-left:1px solid var(--ui-border)}.learn-video-lower h4{margin-bottom:14px;font-size:13px;font-weight:600}.learn-checkpoint-list{gap:8px;display:grid}.learn-checkpoint-list .ui-button{text-align:left;justify-content:flex-start;height:auto;padding:10px}.learn-checkpoint-list .ui-button-label{white-space:normal;align-items:center;gap:12px;line-height:1.6;display:flex}.learn-checkpoint-list small{color:var(--ui-muted);margin-top:4px;font-size:10px;display:block}.learn-note-list{gap:10px;max-height:220px;margin-bottom:16px;display:grid;overflow-y:auto}.learn-note{background:var(--ui-soft);border-radius:var(--ui-radius-sm);text-align:left;color:var(--ui-text);align-items:flex-start;gap:10px;padding:10px;font-size:12px;display:flex}.learn-note time{color:var(--ui-accent);font-variant-numeric:tabular-nums;font-size:11px;font-weight:550}.learn-note span{overflow-wrap:anywhere;line-height:1.6}.learn-note small{color:var(--ui-muted);margin-top:5px;font-size:10px;display:block}.learn-video-notes>.ui-button{margin-top:10px}.learn-video-question h3{margin:18px 0;font-size:19px;font-weight:600;line-height:1.6}.learn-activity-selector{grid-template-columns:1fr auto;align-items:end;gap:16px;margin:24px 0;display:grid}.learn-activity-palette{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-bottom:24px;display:grid}.learn-activity-palette>.ui-button{height:auto;min-height:72px;padding:10px}.learn-activity-palette .ui-button-label{white-space:normal;text-align:center;flex-direction:column;gap:6px;line-height:1.5;display:flex}.learn-activity-palette .ui-button-label>span:first-child{font-size:21px}.learn-integration-contract{border:1px solid var(--ui-border);border-radius:var(--ui-radius);color:var(--ui-muted);margin-top:18px;padding:16px;font-size:12px}.learn-integration-contract summary{cursor:pointer}.learn-integration-contract p{margin-top:12px;line-height:1.7}.learn-integration-contract pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:220px;margin-top:12px;font-size:11px;overflow:auto}.learn-kit button:not(:disabled){transition:color var(--ui-duration), border-color var(--ui-duration), background var(--ui-duration), box-shadow var(--ui-duration), transform calc(var(--ui-duration) * .6)}.learn-kit button:not(:disabled):active{scale:.985}.learn-kit [data-rac][data-disabled],.ui-slider[data-disabled]{opacity:.55;cursor:not-allowed}@media (max-width:1100px){.learn-kit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-panel-filters{grid-template-columns:1fr 1fr}.learn-panel-filters>.ui-toggle-group{grid-column:1/-1}.learn-activity-palette{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (max-width:767px){.learn-kit-grid,.learn-course-hero-bottom,.learn-panel-items--grid,.learn-wordsearch,.learn-crossword-layout,.learn-video-lower{grid-template-columns:minmax(0,1fr)}.learn-kit-intro{flex-wrap:wrap}.learn-kit-intro h2{font-size:21px}.learn-course-cover{min-height:200px;padding:24px}.learn-course-cover--compact{min-height:160px}.learn-course-hero-bottom{gap:20px;padding:22px}.learn-course-hero-progress{max-width:none}.learn-activity-panel{padding:18px}.learn-activity-head,.learn-discussion-head,.learn-activity-body{padding:20px}.learn-activity>.ui-progress{margin:0 20px}.learn-activity-foot{flex-wrap:wrap;padding:16px 20px}.learn-feedback{padding:0 20px 20px}.learn-activity-card{flex-wrap:wrap;gap:12px;padding:16px}.learn-activity-card--compact{flex-wrap:nowrap}.learn-activity-card--compact .learn-activity-symbol{width:34px;height:38px;font-size:18px}.learn-activity-card--compact>.ui-button{padding:0 9px}.learn-panel-filters,.learn-categories{grid-template-columns:minmax(0,1fr)}.learn-category{min-height:140px}.learn-category-items{flex-flow:wrap}.learn-word-list{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-word-list>strong,.learn-word-list>p{grid-column:1/-1}.learn-crossword{justify-self:center;width:100%;max-width:320px}.learn-video-lower>div+div{border-left:0;border-top:1px solid var(--ui-border)}.learn-video-stage-label{top:10px;left:10px;right:10px}.learn-video-stage-label>span:not(.ui-badge){display:none}.learn-video-controls{padding:8px 12px 16px}.learn-video-volume{width:55px}.learn-video-lower>div{padding:18px}.learn-discussion>.learn-comment-composer{margin:16px}.learn-comment-list{padding:0 16px 16px}.learn-comment-main{gap:8px}.learn-comment-main>.ui-avatar{width:28px;height:28px}.learn-comment-children{margin-left:4px;padding-left:8px}.learn-comment-composer{padding:12px}.learn-activity-palette{grid-template-columns:repeat(3,minmax(0,1fr))}.learn-activity-selector{grid-template-columns:minmax(0,1fr)}}@media (max-width:390px){.learn-activity-head,.learn-activity-body,.learn-discussion-head{padding:16px}.learn-activity-head h3{font-size:18px}.learn-activity-palette{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-match{grid-template-columns:1fr 1fr;gap:8px}.learn-match-connector{display:none}.learn-match>div>.ui-button{padding:9px}.learn-match .ui-button-label{flex-wrap:wrap;gap:5px}.learn-order-item{flex-wrap:wrap;gap:7px;padding:8px}.learn-order-item>.ui-action-group{margin-left:auto}.learn-choices--binary{grid-template-columns:minmax(0,1fr)}.learn-activity-card--compact,.learn-composer-actions>.ui-action-group,.learn-video-controls>.ui-action-group{flex-wrap:wrap}}@media (prefers-reduced-motion:reduce){.learn-kit *,.learn-activity *,.learn-discussion *{scroll-behavior:auto!important;transition-duration:0s!important;animation-duration:0s!important}}