.reader-page{margin:0;background:#fff;font:16px/1.5 system-ui,sans-serif;overflow-anchor:none}.reader-page [hidden]{display:none!important}
html:has(.reader-page){scroll-behavior:auto;scroll-padding-top:0;overflow-anchor:none}
.reader-brand{padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid #D2F9F6}.reader-brand .portal-logo{font-size:25px}.reader-brand>a:last-child{min-height:44px;display:flex;align-items:center}
.reader-heading{padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px;max-width:1500px;margin:auto}.reader-heading h1{font-size:clamp(23px,2.5vw,32px);line-height:1.18;margin:0;max-width:850px}.reader-eyebrow{font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin:0 0 5px;font-weight:700}
.reader-picker{display:grid;gap:4px;min-width:240px;font-size:13px;font-weight:650}.reader-picker select{max-width:360px;width:100%}
.reader-page button,.reader-page select{font:650 15px/1.3 system-ui,sans-serif;min-height:46px;min-width:46px;padding:9px 14px;box-sizing:border-box;border:2px solid transparent;border-radius:10px;background:white;color:#174A7E;cursor:pointer}.reader-page button:disabled{opacity:.45;cursor:default}.reader-page select{border:1px solid #174A7E!important;padding-right:28px}
.reader-tools{background:#D2F9F6;--brand-ink:#174A7E!important;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 24px}.reader-tool-group{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.reader-tools output{min-width:45px;text-align:center;font-size:14px}
.reader-page #zoom-in,.reader-page #zoom-out{font-size:22px;font-weight:750;line-height:1}
.reader-stage{position:relative;overflow:auto;background:#FFFFFF;margin:14px 24px 0;padding:18px;min-height:280px;box-sizing:border-box;overscroll-behavior:contain;scrollbar-gutter:stable;touch-action:pan-y pinch-zoom;border-radius:18px;outline-offset:2px!important}.reader-stage[data-zoomed=true]{touch-action:pan-x pan-y pinch-zoom;cursor:grab}.reader-stage[data-mode=scroll]{touch-action:pan-x pan-y pinch-zoom}
#reader-sheets{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;min-width:100%;width:max-content}
.reader-sheet{flex:none;position:relative;margin:0;box-sizing:border-box;background:white;box-shadow:0 4px 18px #174A7E24;line-height:0;max-width:none}.reader-sheet img{display:block;width:100%;height:100%;object-fit:contain;user-select:none;-webkit-user-drag:none}.reader-sheet figcaption{position:absolute;left:0;top:100%;width:100%;text-align:center;font:500 12px/20px system-ui,sans-serif;padding-top:2px}.reader-stage[data-mode=pages] figcaption{display:none}
.reader-stage #book-loading,.reader-stage #book-error{line-height:1.5;text-align:center;padding:40px 20px}.reader-page #book-error h2{font-size:26px}.page-load-error{position:absolute;inset:0;background:white;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;line-height:1.5;padding:20px;text-align:center}.page-load-error p{margin:0}.page-load-error button{border:2px solid #174A7E!important;background:#D2F9F6!important;--brand-ink:#174A7E!important}
.page-loading{position:absolute;inset:0;display:grid;place-items:center;background:#fff;font:600 16px/1.5 system-ui,sans-serif;color:#174A7E}
.reader-navigation{display:flex;align-items:center;justify-content:center;gap:16px;padding:12px 24px}.reader-page #previous-page,.reader-page #next-page,.reader-page #read-again{background:#D2F9F6!important;color:#174A7E!important;--brand-ink:#174A7E!important;border:2px solid #174A7E!important;min-width:144px;font-weight:750}
.reader-page-picker{display:flex;align-items:center;gap:8px}.reader-page-picker select{min-width:104px}.reader-page-picker span{font-size:15px;white-space:nowrap}
.reader-meta{max-width:1450px;padding:0 24px;display:flex;justify-content:space-between;gap:8px 24px;flex-wrap:wrap;margin:auto;font-size:13px}.reader-meta p{margin:0}.reader-meta #reader-status{font-weight:600}
.reader-bottom{padding:18px 24px 32px;max-width:1100px;margin:auto;font-size:14px}.reader-bottom>a,.reader-bottom details>a{display:inline-flex;align-items:center;min-height:44px;margin-right:22px;text-underline-offset:3px}.reader-bottom summary{font-weight:700;cursor:pointer;min-height:44px;line-height:44px}.reader-bottom p{max-width:900px}.reader-bottom button{border:1px solid #174A7E!important}
.reader-focus .reader-brand,.reader-focus .reader-heading{display:none}.reader-focus .reader-tools{padding-top:10px}.reader-focus .reader-stage{margin-top:10px}
.reader-page dialog{border:2px solid #174A7E!important;border-radius:20px;background:#fff;padding:24px;box-sizing:border-box;max-height:90dvh;width:calc(100% - 32px);max-width:1050px;overflow:auto}.reader-dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.reader-dialog-heading h2{font-size:24px;margin:0}.reader-dialog-heading button{border:2px solid #174A7E!important;background:#D2F9F6!important;--brand-ink:#174A7E!important;flex-shrink:0}
#page-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px}.reader-page #page-grid button{display:flex;flex-direction:column;align-items:center;gap:8px;padding:8px;border:2px solid #D2F9F6;line-height:1.5}.reader-page #page-grid button[aria-current=page]{outline:3px solid #174A7E!important;outline-offset:1px}.reader-page #page-grid img{max-width:100%;width:200px;height:145px;object-fit:contain}
.reader-page #text-dialog{max-width:800px}#page-text{font:400 21px/1.65 system-ui,sans-serif;white-space:pre-line;padding:4px 4px 20px}.reader-text-nav{display:flex;align-items:center;justify-content:space-between;gap:10px}.reader-text-nav button{background:#D2F9F6!important;--brand-ink:#174A7E!important;border:2px solid #174A7E!important}.reader-text-nav span{white-space:nowrap;font-size:14px}
@media(max-width:800px){.reader-heading{display:block;padding:12px 16px}.reader-heading h1{font-size:24px}.reader-picker{margin-top:12px;display:flex;align-items:center;gap:10px}.reader-picker select{max-width:none;min-width:0;flex:1}.reader-tools{padding:8px 12px;flex-wrap:wrap;gap:8px}.reader-stage{margin:10px 12px 0;padding:12px}.reader-meta{padding:0 14px}.reader-eyebrow{display:none}}
@media(max-width:500px){.reader-brand{padding:8px 12px;gap:8px}.reader-brand .portal-logo{font-size:20px}.reader-brand>a:last-child{font-size:13px}.reader-heading h1{font-size:22px}.reader-picker{font-size:12px}.reader-page button,.reader-page select{font-size:13px;padding:8px;min-height:44px}.reader-tool-group{gap:5px}.reader-tools select{max-width:150px}.reader-tools output{min-width:40px}.reader-stage{padding:8px;margin:8px 8px 0;border-radius:12px}.reader-navigation{gap:7px;padding:10px 8px}.reader-page #previous-page,.reader-page #next-page,.reader-page #read-again{min-width:88px}.reader-page-picker{gap:5px}.reader-page-picker select{min-width:80px}.reader-page-picker span{font-size:13px}.reader-meta{font-size:12px}.reader-meta #reader-hint{display:none}.reader-dialog-heading{align-items:flex-start}.reader-dialog-heading h2{font-size:21px}.reader-page dialog{padding:16px}.reader-page #page-grid{gap:12px}.reader-page #page-grid img{height:110px}#page-text{font-size:19px}.reader-text-nav{gap:6px}.reader-text-nav button{font-size:12px}.reader-text-nav span{font-size:12px}}
@media(prefers-reduced-motion:reduce){.reader-page *{scroll-behavior:auto!important}}

/* Full-page reading uses the same viewport mode as the worksheet editor. */
.reader-page :is(#previous-page,#next-page,#read-again){display:inline-flex;align-items:center;justify-content:center;gap:6px}
.reader-page.reader-focus{height:100vh;height:100dvh;overflow:hidden}
.reader-page.reader-focus #main{height:100%;min-height:0;max-width:none;margin:0;padding:0;display:flex;flex-direction:column}
.reader-page.reader-focus :is(.reader-brand,.reader-heading,.reader-tools,.reader-bottom,.skip-link){display:none}
.reader-page.reader-focus .reader-meta{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);padding:0}
.reader-page.reader-focus .reader-stage{flex:1;min-height:0;margin:0;padding:4px;border-radius:0;scrollbar-gutter:auto;outline-offset:-3px!important}
.reader-page.reader-focus .reader-sheet{box-shadow:none}
.reader-page.reader-focus .reader-navigation{flex:none;box-sizing:border-box;min-height:58px;padding:6px 8px max(6px,env(safe-area-inset-bottom));gap:8px;border-top:1px solid #D2F9F6;background:#fff}
.reader-page.reader-focus :is(#previous-page,#next-page,#read-again){min-width:48px;min-height:44px;font-size:20px;padding:6px 10px}
.reader-page.reader-focus .reader-nav-label{display:none}
.reader-page.reader-focus .reader-page-picker{gap:5px}
.reader-page.reader-focus #page-choice{min-width:80px;min-height:44px;font-size:14px;padding:8px 24px 8px 8px}
.reader-page.reader-focus #page-total{font-size:13px}
.reader-page #exit-fullscreen{min-height:44px;border:2px solid #174A7E!important;background:#D2F9F6!important;color:#174A7E!important;--brand-ink:#174A7E!important;font-size:14px;padding:8px 10px}
@media(max-width:360px){.reader-page.reader-focus .reader-navigation{gap:5px;padding-inline:4px}.reader-page.reader-focus #page-total{display:none}}
/* Reading controls above a full-width page, with no empty stage around it. */
.reader-page:not(.reader-focus) #main{display:flex;flex-direction:column;max-width:none;padding:0;margin:0;gap:0}
.reader-sidebar{background:#EDFCFA;padding:10px 16px;box-sizing:border-box;width:100%}
.reader-sidebar .reader-heading{padding:0;gap:16px;max-width:none;display:flex;align-items:center}
.reader-sidebar .reader-heading h1{font-size:22px;line-height:1.15}
.reader-sidebar .reader-eyebrow{display:none}
.reader-sidebar .reader-picker{margin:0;min-width:180px;max-width:280px;font-size:12px}
.reader-sidebar .reader-tools{padding:8px 0 0;background:transparent;flex-wrap:wrap;justify-content:center}
.reader-sidebar .reader-navigation{padding:8px 0 0;gap:10px;display:flex;justify-content:center}
.reader-page:not(.reader-focus) .reader-stage{margin:0;padding:0;min-width:0;min-height:0;border-radius:0;scrollbar-gutter:auto}
.reader-page:not(.reader-focus) #reader-sheets{min-height:0;gap:12px}
.reader-page:not(.reader-focus) .reader-sheet{box-shadow:none}
.reader-page .reader-sheet img{border-radius:0!important}
.reader-focus .reader-sidebar{display:contents}
.reader-page.reader-focus .reader-navigation{order:-1;display:flex;justify-content:center}
.reader-page.reader-focus .reader-stage{order:0}
.reader-page.reader-focus .reader-page-picker select{width:auto}
@media(max-width:600px){
 .reader-sidebar{padding:8px}
 .reader-sidebar .reader-heading{gap:8px}
 .reader-sidebar .reader-heading h1{font-size:18px}
 .reader-sidebar .reader-picker{min-width:0;width:44%;flex:none;display:block}
 .reader-sidebar .reader-picker select{width:100%;font-size:12px}
 .reader-sidebar .reader-tools{gap:6px}
 .reader-sidebar .reader-navigation{gap:6px}
 .reader-sidebar #page-total{font-size:12px}
}
.reader-page-link:focus-visible{outline:3px solid #174A7E;outline-offset:2px;background:rgba(210,249,246,.3)}


.reader-access-note{padding:14px;border:1px solid #174A7E;border-radius:14px;background:#fff;color:#174A7E;margin-block:12px}.reader-access-note p{font-size:14px;line-height:1.5;margin:0 0 12px}.reader-access-note .button{display:block;white-space:normal;text-align:center}

.parent-reader .reader-sidebar{background:#fff!important}
.parent-reader .reader-access-note .button{border-radius:12px!important;min-width:0;padding:12px!important;font-size:14px!important}
@media(max-width:600px){
 .reader-page.parent-preview:not(.reader-focus) #main{display:flex;flex-direction:column;gap:0}
 .parent-preview .reader-sidebar{display:contents}
 .parent-preview .reader-heading{order:0;margin:12px 16px 0;padding:0}
 .parent-preview .reader-heading h1{font-size:24px;margin:0}
 .parent-preview .reader-picker,.parent-preview .reader-tools,.parent-preview .reader-meta,.parent-preview .reader-bottom{display:none}
 .parent-preview .reader-access-note{order:1;margin:10px 16px;padding:12px}
 .parent-preview .reader-access-note p{font-size:14px;margin-bottom:8px}
 .parent-preview .reader-stage{order:2}
 .parent-preview .reader-navigation{order:3;display:flex;padding:10px 16px;justify-content:center}
 .parent-preview .reader-navigation .reader-nav-label{display:inline}
 .parent-preview .reader-navigation #next-page{font-size:14px;min-width:100px}
}

.reader-transcript{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:pre-wrap;border:0}