/* Learning components. The page frame and theme are in site-shell.css. */
:root{--alert:#b42318}
*{box-sizing:border-box}
body{margin:0;color:var(--ink);background:var(--paper);font:14px/1.65 var(--sans)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button,a,input,select{touch-action:manipulation}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
button:disabled{opacity:.55;cursor:wait}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.skip-link{position:fixed;top:-80px;left:20px;padding:12px;background:var(--surface);z-index:100}
.skip-link:focus{top:12px}
.header-actions{display:flex;align-items:center;gap:18px;white-space:nowrap}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;background:#18181b;border:1px solid #18181b;border-radius:6px;color:white;padding:9px 18px;font-size:13px;gap:8px;white-space:nowrap;transition:background .15s}
.button:hover{background:#27272a;border-color:#27272a}
.button.compact{min-height:34px;padding:6px 13px;font-size:12px}
.button.secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}
.button.secondary:hover{background:var(--soft)}
.quiet,.text-button{background:none;border:0;color:var(--muted);padding:5px 0;font-size:12px}
.quiet:hover,.text-button:hover,.text-link:hover{color:var(--ink)}
.text-link{color:var(--ink);font-size:12px}
.muted{color:var(--muted);font-size:12px}
.eyebrow{font:10px/1.6 var(--mono);letter-spacing:1px;color:var(--muted);margin:0 0 9px}
.learn-main{min-height:calc(100dvh - 72px)}
.library-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:0 0 22px}
.library-heading h1{font-size:28px;font-weight:550;line-height:1.45;letter-spacing:-.6px;margin:0}
.library-heading>p{white-space:nowrap}
.library-heading>p strong{font-weight:500;color:var(--ink)}
.lead{font-size:12px;color:var(--muted);margin:6px 0 0}
.product-panel{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:13px 17px;display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:23px}
.product-panel h2{font-size:14px;font-weight:500;line-height:1.6;margin:0 0 3px}
.product-panel p{color:var(--muted);font-size:12px;margin:0}
.product-panel p:empty{display:none}
.product-purchase{flex-shrink:0}
.product-purchase .button{padding:8px 14px;font-size:12px}
.library-tools{display:flex;align-items:center;gap:18px;margin-bottom:22px}
.search-field{border:1px solid var(--line);border-radius:6px;background:var(--surface);display:flex;align-items:center;gap:10px;padding:10px 13px;width:340px;min-width:0;transition:border-color .15s,box-shadow .15s}
.search-field svg{width:16px;height:16px;flex-shrink:0;color:var(--muted)}
.search-field span{font-size:22px;line-height:1;color:var(--muted)}
.search-field input{background:none;border:0;outline:none;width:100%;min-width:0;font-size:12px;color:var(--ink)}
.search-field input:focus-visible{outline:none}
.search-field:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px #18181b0a}
.filter-group{display:grid;gap:4px}
.filter-group button{width:100%;text-align:left;border:1px solid transparent;border-radius:6px;background:none;padding:9px 12px;font-size:12px;color:var(--muted)}
.filter-group button.active{background:var(--soft);border-color:var(--line);color:var(--ink);font-weight:500}
.filter-group button:hover{background:var(--soft)}
.library-tools>#refresh-library{margin-left:auto;white-space:nowrap}
.sidebar-library-note{font-size:12px;color:var(--muted);line-height:1.8;padding:10px 12px;margin:0}
.library-filters{display:flex;gap:27px;flex-wrap:wrap;margin:0 0 22px;border-bottom:1px solid var(--line)}
.library-filters button{position:relative;width:auto;padding:9px 0 12px;border:0;border-radius:0;font-size:13px;min-height:42px}
.library-filters button.active{background:none;border:0;color:var(--ink);font-weight:500}
.library-filters button.active:after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;border-radius:2px;background:var(--ink)}
.library-filters button:hover{background:none;color:var(--ink)}
.lesson-back-link{display:flex;align-items:center;gap:7px;color:var(--ink);font-size:12px;margin:0 10px 14px}
.sidebar-course-title{font-size:13px;font-weight:500;line-height:1.8;overflow-wrap:anywhere;margin:0 10px 18px}
.lesson-directory-search{width:100%;margin-bottom:8px}
.lesson-directory-tools{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:0 8px 12px}
.lesson-directory-tools span{font-size:11px;color:var(--muted)}
.lesson-group-toggle{display:flex;align-items:center;gap:7px;width:100%;padding:10px 8px;border:0;background:none;color:var(--ink);font-size:12px;text-align:left}
.lesson-group-items{border-left:1px solid var(--line);margin:0 0 10px 7px;padding-left:6px}
.lesson-pagination{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;padding:16px 0;border-top:1px solid var(--line)}
.lesson-pagination .quiet{display:inline-flex;align-items:center;gap:7px}
.notice{font-size:12px;padding:10px 13px;border:1px solid var(--line);background:var(--soft);color:var(--muted);border-radius:6px;overflow-wrap:anywhere}
.notice:empty{display:none}
.notice.error{color:var(--alert);background:#fef3f2;border-color:#fecdca}
.notice.success{background:#f0fdf4;color:#166534;border-color:#bbf7d0}
.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,270px),1fr));gap:16px}
.course-card{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .15s;min-width:0}
.course-card:hover{border-color:#d4d4d8}
.course-art{height:164px;background:var(--soft);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}
.course-art.fallback{height:112px;justify-content:flex-end;align-items:center;padding:16px 24px;background:var(--soft)}
.course-art img{width:100%;height:100%;object-fit:cover}
.course-art.fallback:after{content:none}
.course-art .art-number{position:relative;font:40px/1 var(--sans);font-weight:550;font-variant-numeric:tabular-nums;color:#a1a1aa;letter-spacing:-2px;z-index:1}
.course-card-body{padding:18px;display:flex;flex-direction:column;flex:1}
.course-meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:10px}
.access-badge{display:inline-block;background:var(--soft);color:var(--muted);padding:2px 7px;border-radius:4px;font-size:10px;white-space:nowrap}
.course-card h2{font-size:17px;line-height:1.5;font-weight:550;margin:10px 0 8px;overflow-wrap:anywhere}
.course-card-description{font-size:13px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 16px}
.course-card-bottom{margin-top:auto;padding-top:13px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:11px;color:var(--muted)}
.course-card-bottom b{display:inline-flex;align-items:center;gap:7px;font-weight:500;color:var(--ink)}
.empty-state{text-align:center;border:1px solid var(--line);background:var(--surface);padding:38px 20px;border-radius:8px;margin-top:20px}
.empty-number{font:36px/1.2 var(--sans);font-weight:550;color:#a1a1aa;letter-spacing:-2px}
.empty-state h2{font-size:18px;font-weight:500}
.empty-state p{font-size:12px;color:var(--muted)}
.learn-footer{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted);font-size:11px}
.learn-footer .text-button{font-size:11px}
.course-breadcrumb{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:18px}
.course-breadcrumb>a{display:inline-flex;align-items:center;gap:7px}
.course-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:22px}
.course-heading>div:first-child{min-width:0}
.course-heading h1{font-size:26px;line-height:1.5;margin:0 0 6px;font-weight:550;overflow-wrap:anywhere}
.course-heading #course-summary{color:var(--muted);font-size:12px;margin:0}
#course-summary:empty,#lesson-summary:empty{display:none}
.course-heading-actions{display:flex;gap:16px;align-items:center;flex-shrink:0}
.classroom{border:1px solid var(--line);background:var(--surface);border-radius:8px;overflow:hidden;min-height:500px}
.lesson-row{display:block;text-align:left;width:100%;border:1px solid transparent;background:none;padding:10px;margin-bottom:5px;border-radius:6px;color:var(--muted)}
.lesson-row.selected{background:var(--soft);border-color:transparent;color:var(--ink);box-shadow:inset 2px 0 var(--ink)}
.lesson-row:hover{background:var(--soft)}
.lesson-row strong{font-weight:500;font-size:12px;display:block;line-height:1.8;overflow-wrap:anywhere}
.lesson-row small{font-size:10px;display:block;color:var(--muted);margin-top:3px}
#sidebar-count{font:10px var(--mono);margin-left:5px;color:var(--muted)}
.lesson-workspace{padding:22px 24px;min-width:0}
.lesson-heading h2{font-size:20px;font-weight:500;margin:3px 0 5px;overflow-wrap:anywhere}
.lesson-heading p{margin:0 0 16px}
.content-tabs{display:flex;gap:22px;border-bottom:1px solid var(--line);margin:15px 0 18px}
.content-tabs button{border:0;background:none;color:var(--muted);padding:8px 0 12px;font-size:12px}
.content-tabs button[aria-selected=true]{border-bottom:2px solid var(--ink);color:var(--ink);font-weight:500}
.video-list{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 14px}
.video-choice{border:1px solid var(--line);background:var(--surface);padding:6px 10px;font-size:11px;color:var(--muted);border-radius:4px;text-align:left;overflow-wrap:anywhere;max-width:100%}
.video-choice.selected{background:var(--soft);border-color:#d4d4d8;color:var(--ink)}
#course-player{display:block;width:100%;aspect-ratio:16/9;background:#202020;border-radius:6px}
#course-player::cue{font-family:var(--sans);font-size:20px;background:rgba(0,0,0,.78);color:#fff}
.player-status{font-size:12px;color:var(--muted);margin:12px 0;white-space:pre-line;overflow-wrap:anywhere}
.player-status.error{color:var(--alert)}
.doc-frame{position:relative}
.doc-mount{min-height:560px;width:100%;position:relative}
.doc-mount iframe{border:0;max-width:100%}
.doc-frame.doc-page-scroll .doc-mount{position:sticky;top:0;min-height:0;width:100%}.doc-frame.doc-page-scroll .doc-mount iframe{display:block;width:100%;height:100%}.doc-frame.doc-full-height .doc-mount{position:relative;top:auto}
.doc-watermark{position:absolute;inset:0;pointer-events:none;z-index:3;background-repeat:repeat}
.lesson-gate{background:var(--surface);border:1px solid var(--line);border-radius:8px;text-align:center;padding:32px 20px;margin-top:20px}
.gate-mark{display:inline-flex;align-items:center;justify-content:center;color:var(--muted)}
.gate-mark .site-ui-icon{width:18px;height:18px}
.lesson-gate h3{font-size:19px;font-weight:500;margin:9px 0}
.lesson-gate p{color:var(--muted);font-size:12px}
.action-row{display:flex;align-items:center;justify-content:center;gap:15px;margin-top:23px;flex-wrap:wrap}
.action-row .button{font-size:12px;padding:9px 15px}
dialog{width:min(620px,calc(100vw - 32px));max-height:calc(100dvh - 48px);border:1px solid var(--line);border-radius:8px;color:var(--ink);padding:24px;background:var(--surface);box-shadow:0 12px 32px #18181b12}
dialog::backdrop{background:#18181b52}
.dialog-heading{display:flex;justify-content:space-between;align-items:start;gap:20px}
.dialog-heading h2{font-size:23px;font-weight:500;margin:0 0 16px}
.close-dialog{display:grid;place-items:center;width:32px;height:32px;flex-shrink:0;border:0;border-radius:6px;background:none;color:var(--muted);padding:7px}
.close-dialog:hover{background:var(--soft);color:var(--ink)}
dialog h3{font-size:14px;font-weight:500;margin:0 0 10px}
.account-identity{font-size:12px;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:16px;margin:0 0 15px;overflow-wrap:anywhere}
.entitlement-row,.redemption-row{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--line);font-size:12px;overflow-wrap:anywhere}
.entitlement-row span:last-child,.redemption-row span:last-child{color:var(--muted);font-size:11px}
.entitlement-row.expired{opacity:.65}
.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:80;border-radius:6px;background:#18181b;color:white;padding:11px 18px;font-size:12px;max-width:90vw;text-align:center;box-shadow:none}
.transcript-section{margin-top:20px;border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:16px}
.transcript-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:17px}
.transcript-heading h3{font-size:14px;font-weight:500;margin:0 0 4px}
.transcript-heading p{font-size:11px;margin:0}
.transcript-heading>.quiet{flex-shrink:0;font-size:11px}
.transcript-tools{display:flex;align-items:center;gap:16px;margin-top:18px}
.transcript-tools .search-field{width:300px;padding:7px 10px}
.transcript-tools .search-field input{font-size:11px}
.transcript-tools>.quiet{margin-left:auto;white-space:nowrap;font-size:11px}
.transcript-summary{font-size:11px;color:var(--muted);margin:13px 0 8px}
.transcript-summary:empty{display:none}
.transcript-list{position:relative;padding:0;margin:0;list-style:none;max-height:320px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
.transcript-list:empty{display:none}
.transcript-list>li{margin:0 0 3px}
.transcript-row{display:grid;grid-template-columns:48px minmax(0,1fr);gap:13px;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:6px;padding:10px 12px;color:var(--muted)}
.transcript-row:hover{background:var(--soft)}
.transcript-row:disabled{cursor:default;opacity:1}
.transcript-row.active{background:var(--soft);border-color:var(--line);color:var(--ink)}
.transcript-time{font:11px/1.9 var(--mono);color:var(--muted)}
.transcript-text{font-size:14px;line-height:1.8;overflow-wrap:anywhere;min-width:0}
.transcript-text mark{background:#e4e4e7;color:inherit;padding:0 1px}
.transcript-empty{font-size:12px;color:var(--muted);padding:15px 8px}
#transcript-caption-hint{margin:12px 0 0;font-size:11px}
.course-directory-button{display:none}
@media(max-width:1100px){.lesson-workspace{padding:20px}.course-grid{gap:16px}}
@media(max-width:900px){.course-directory-button{display:inline-block}.course-heading{align-items:flex-start}.course-heading-actions{gap:12px;flex-wrap:wrap;justify-content:flex-end}.course-heading-actions #lesson-count{width:100%;text-align:right}}
@media(max-width:600px){
 .header-actions{gap:12px}.header-actions .quiet{font-size:11px}.button.compact{padding:6px 10px;font-size:11px}
 .library-heading h1{font-size:25px}.library-heading{gap:16px;margin-bottom:22px}.library-heading>p{font-size:11px}
 .library-tools{gap:14px;flex-wrap:wrap}.library-tools .search-field{width:100%}
 .product-panel{align-items:flex-start;flex-direction:column;padding:14px 16px;gap:13px}
 .course-art{height:168px}.course-art.fallback{height:104px}.course-card-body{padding:16px}
 .course-heading{display:block;margin-bottom:20px}.course-heading h1{font-size:23px}.course-heading-actions{justify-content:flex-start;margin-top:14px}.course-heading-actions #lesson-count{width:auto;text-align:left;margin-right:auto}
 .classroom{min-height:380px}.lesson-workspace{padding:18px 14px}.lesson-heading h2{font-size:19px}.doc-mount{min-height:500px}
 .entitlement-row,.redemption-row{gap:13px;font-size:11px}.entitlement-row span:last-child{font-size:10px}
 dialog{padding:24px 20px}
 .transcript-section{padding:15px 12px;margin-top:20px}.transcript-heading{gap:10px}.transcript-heading h3{font-size:13px}.transcript-heading p{font-size:10px}
 .transcript-heading>.quiet{font-size:10px}.transcript-tools{gap:10px}.transcript-tools .search-field{width:auto;flex:1;min-width:0}.transcript-tools>.quiet{font-size:10px}
 .transcript-list{max-height:280px}.transcript-row{grid-template-columns:42px minmax(0,1fr);gap:9px;padding:9px 7px}.transcript-text{font-size:14px;line-height:1.75}.transcript-time{font-size:10px}
 #course-player::cue{font-size:14px}
}
@media(prefers-reduced-motion:reduce){.course-card,.button,.search-field{transition:none}}


/* Community collections share one scope control and a calm reading surface. */
.library-scope{display:flex;gap:24px;flex-wrap:wrap;padding:0 0 18px;margin-bottom:22px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}.library-scope label{display:flex;align-items:center;gap:10px}.library-scope select{border:1px solid var(--line);padding:7px 10px;background:var(--surface);border-radius:6px;color:var(--ink);max-width:180px}.content-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}.content-tags span{padding:2px 7px;background:var(--soft);border-radius:3px;font-size:10px;color:var(--muted)}.claim-history{margin-top:38px;border-top:1px solid var(--line);padding-top:23px}.claim-history h2,.collection-heading{font-size:19px;font-weight:500}.claim-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}.claim-row strong{font-weight:500;font-size:13px}.claim-row p{margin:4px 0 0}.product-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,320px);gap:32px;align-items:start;border-bottom:1px solid var(--line);padding:20px 0 28px;margin-bottom:24px}.product-intro h1{font-size:28px;font-weight:550;line-height:1.5;margin:8px 0 14px}.product-intro img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}.product-price{font:24px/1.4 var(--sans);font-weight:600;color:var(--ink);margin:20px 0}.product-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:25px}.benefit-instructions{white-space:pre-line;overflow-wrap:anywhere}.benefit-conditions,.submission-values{display:grid;grid-template-columns:100px minmax(0,1fr);gap:10px;font-size:12px;padding:18px 0;border-block:1px solid var(--line);margin:20px 0}.benefit-conditions dt,.submission-values dt{color:var(--muted)}.benefit-conditions dd,.submission-values dd{margin:0;overflow-wrap:anywhere}.delivery-value{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--soft);border:1px solid var(--line);padding:18px;border-radius:6px;font:13px/1.8 var(--mono)}.benefit-form{display:grid;gap:17px;margin-top:20px}.benefit-field{display:grid;gap:7px;font-size:12px}.benefit-field input,.benefit-field textarea,.benefit-field select{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:10px 12px;min-width:0}.benefit-field input[type=checkbox]{width:18px;accent-color:var(--ink)}.benefit-form>.button{justify-self:start}.benefit-form textarea{min-height:100px}#benefit-dialog .quiet{margin-left:14px}
@media(max-width:700px){.product-intro{grid-template-columns:1fr;gap:25px;padding-top:15px}.product-intro img{max-width:360px}.product-intro h1{font-size:25px}.product-actions{flex-direction:column;align-items:stretch}.library-scope{gap:14px}.library-scope label{flex:1;min-width:140px}.library-scope select{min-width:0;flex:1}.benefit-conditions,.submission-values{grid-template-columns:80px minmax(0,1fr)}}

/* One course outline, shared by the shell and the reading page. */
.curriculum-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:4px 10px 14px;color:var(--ink);font-size:12px;font-weight:550}.curriculum-heading .quiet{font-size:10px;font-weight:400}.curriculum-search{width:100%;padding:9px 10px;margin-bottom:16px}.curriculum-search input{font-size:11px}.curriculum-status{font-size:11px;color:var(--muted);margin:0 9px 12px}.curriculum-status:empty{display:none}.curriculum-container{margin-bottom:13px}.curriculum-container-toggle{display:flex;align-items:flex-start;gap:8px;width:100%;padding:9px 8px;text-align:left;background:transparent;border:0;border-radius:6px;color:var(--ink);font-size:13px;font-weight:550;line-height:1.7}.curriculum-container-toggle:hover{background:var(--soft)}.curriculum-container-toggle .site-ui-icon{flex:0 0 15px;margin-top:3px;transition:transform .14s}.curriculum-container-toggle[aria-expanded=true]>.site-ui-icon,.curriculum-arrow[aria-expanded=true]>.site-ui-icon{transform:rotate(90deg)}.curriculum-container-toggle span{min-width:0;overflow-wrap:anywhere}.curriculum-row{display:flex;align-items:flex-start;border-radius:6px;padding-left:calc(8px + var(--article-depth,0)*13px);margin:2px 0;min-width:0}.curriculum-row:hover{background:var(--soft)}.curriculum-row.selected{background:var(--soft);box-shadow:inset 2px 0 var(--ink)}.curriculum-arrow{display:grid;place-items:center;flex:0 0 22px;width:22px;height:35px;padding:0;border:0;background:transparent;color:var(--muted)}.curriculum-arrow>.site-ui-icon{width:12px;height:12px;transition:transform .14s}.curriculum-arrow-empty{visibility:hidden;cursor:default}.curriculum-article-link{display:flex;align-items:flex-start;gap:7px;flex:1;min-width:0;padding:8px 7px 8px 1px;color:#52525b;font-size:12px;line-height:1.65}.curriculum-number{flex:0 0 auto;color:var(--muted);font:10px/2 var(--mono);padding-top:1px}.curriculum-title{min-width:0;overflow-wrap:anywhere}.curriculum-row.selected .curriculum-title{color:var(--ink);font-weight:500}.curriculum-locked .curriculum-title{color:var(--muted)}.curriculum-lock{margin-left:auto;color:#a1a1aa;line-height:1.2;font-size:19px}.curriculum-empty{padding:8px 18px;font-size:11px;color:var(--muted)}.curriculum-container-toggle:focus-visible,.curriculum-arrow:focus-visible,.curriculum-article-link:focus-visible{outline:2px solid var(--ink);outline-offset:1px}#curriculum-tree[aria-busy=true]:empty{min-height:180px;background:linear-gradient(#e4e4e7,#e4e4e7) 10px 10px/70% 13px no-repeat,linear-gradient(#eeeeef,#eeeeef) 30px 49px/75% 11px no-repeat,linear-gradient(#eeeeef,#eeeeef) 30px 86px/64% 11px no-repeat,linear-gradient(#e4e4e7,#e4e4e7) 10px 140px/57% 13px no-repeat}.reading-placeholder{padding:16px 0 35px;display:grid;gap:18px;min-height:280px}.reading-placeholder span{display:block;height:12px;max-width:760px;background:#e4e4e7;border-radius:3px}.reading-placeholder span:nth-child(2){width:83%}.reading-placeholder span:nth-child(3){width:92%}.reading-placeholder span:nth-child(4){width:57%}#course-grid[aria-busy=true]:empty:before,#product-detail-view[aria-busy=true] #product-detail-body:empty:before{content:"";display:block;height:260px;border-radius:8px;background:var(--soft);width:100%}#library-status:empty,#course-status:empty{display:none}.account-benefits-link{margin-left:20px}#course-view .course-heading h1{font-size:16px;font-weight:450;color:var(--muted);letter-spacing:0}#course-view .course-heading{margin-bottom:15px}#course-view .lesson-heading h2{font-size:27px;line-height:1.5;font-weight:550}#course-view .course-breadcrumb{display:none}#course-view .lesson-workspace{border:0;padding:0;background:transparent}#course-view .lesson-index{color:var(--ink)}#course-view .lesson-heading{padding:0 0 18px}#course-view .course-heading h1:empty{display:none}
@media(max-width:600px){#course-view .lesson-heading h2{font-size:23px}.curriculum-row{padding-left:calc(7px + var(--article-depth,0)*14px)}.curriculum-container-toggle{padding-top:12px;padding-bottom:12px}.curriculum-article-link{padding-top:10px;padding-bottom:10px}.curriculum-arrow{height:40px}.curriculum-number{font-size:11px}.curriculum-article-link{font-size:13px}.curriculum-search{margin-bottom:13px}#course-view .course-heading h1{font-size:14px}.reading-placeholder{min-height:200px}}
@media(prefers-reduced-motion:reduce){.curriculum-container-toggle .site-ui-icon,.curriculum-arrow .site-ui-icon{transition:none}}
#document-panel[aria-busy=true] .doc-frame:before{content:"";position:absolute;inset:20px 24px auto;height:180px;z-index:2;pointer-events:none;background:linear-gradient(#e4e4e7,#e4e4e7) 0 0/60% 12px no-repeat,linear-gradient(#e4e4e7,#e4e4e7) 0 36px/95% 12px no-repeat,linear-gradient(#e4e4e7,#e4e4e7) 0 72px/84% 12px no-repeat,linear-gradient(#e4e4e7,#e4e4e7) 0 108px/92% 12px no-repeat}
#course-view .classroom{border:0;border-radius:0;background:transparent;overflow:visible}

/* Shared community checkout: the amount is fixed by the displayed order. */
.account-purchase-section{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}.account-purchase-section>p{font-size:12px;color:var(--muted);line-height:1.8}.account-purchase-section .button{margin-top:8px}.purchase-dialog{width:min(480px,calc(100vw - 32px));padding:24px}.purchase-dialog .dialog-heading h2{margin-bottom:8px}.purchase-dialog #purchase-description{font-size:12px;line-height:1.8;margin:0 0 23px}.purchase-total{display:grid;grid-template-columns:1fr auto;align-items:center;gap:5px 18px;border-block:1px solid var(--line);padding:18px 0;margin-bottom:23px}.purchase-total>span{font-size:13px;overflow-wrap:anywhere}.purchase-total>strong{grid-column:2;grid-row:1/3;font:32px/1.2 var(--sans);font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}.purchase-total>small{font-size:11px;color:var(--muted)}.purchase-qr-frame{text-align:center}.purchase-qr-frame img{display:block;width:224px;height:224px;max-width:100%;object-fit:contain;margin:0 auto;border:1px solid var(--line);background:#fff;border-radius:6px}.purchase-qr-frame p{font-size:12px;color:var(--muted);margin:13px 0}.purchase-order{text-align:center;color:var(--muted);font:10px/1.7 var(--mono);overflow-wrap:anywhere;margin:15px 0 5px}.purchase-countdown{text-align:center;color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}.purchase-dialog .notice{line-height:1.8;font-size:12px;text-align:center}.purchase-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:17px}.purchase-actions .button{font-size:12px;padding:10px 15px}.button:disabled,.text-button:disabled{opacity:.55;cursor:not-allowed}.purchase-dialog .notice:empty,.purchase-countdown:empty{display:none}@media(max-width:600px){.purchase-dialog{padding:24px 20px}.purchase-total>strong{font-size:30px}.purchase-actions{flex-direction:column}.purchase-actions .button{width:100%}.lesson-gate .action-row{gap:10px}.lesson-gate .action-row .button{padding:10px 13px}}