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820px){:root{--topbar:76px;}body{padding-bottom:calc(80px + env(safe-area-inset-bottom));}.sidebar{display:none;}.app-shell{margin-left:0;}.topbar{padding:10px 15px;}.brand-copy strong{font-size:21px;}.brand-copy span{font-size:12px;}.child-chip{padding:9px 12px;}.donate-button{padding:9px 11px;}.donate-button span:last-child{display:none;}.support-card{flex-direction:column;align-items:stretch;}.support-button{width:100%;}.child-chip span:last-child{max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}main#app{padding:20px 15px 34px;}.mobile-nav{position:fixed;display:grid;grid-template-columns:repeat(5, 1fr);left:0;right:0;bottom:0;z-index:60;padding:8px 7px calc(7px + env(safe-area-inset-bottom));background:rgba(255,255,255,.95);border-top:1px solid var(--line);backdrop-filter:blur(16px);}.mobile-nav .nav-item{width:auto;min-height:59px;border-radius:18px;gap:2px;}.mobile-nav .nav-item span{font-size:21px;}.mobile-nav .nav-item 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.topbar.topbar-compact #donateQuick{width:44px;height:44px;padding:0;justify-content:center;}.topbar.topbar-compact .topbar-actions{gap:7px;}.topbar.topbar-ultra-compact .brand-copy span{display:none;}.topbar.topbar-ultra-compact .brand-copy strong{font-size:clamp(24px,2.05vw,30px);}.topbar.topbar-ultra-compact .session-chip{width:44px;height:44px;min-width:44px;padding:0;justify-content:center;}.topbar.topbar-ultra-compact .session-copy{display:none;}.topbar.topbar-ultra-compact .points-chip small{display:none;}.topbar.topbar-ultra-compact .points-chip span{grid-row:auto;}.topbar.topbar-ultra-compact .child-chip{max-width:118px;padding-inline:10px;}.topbar.topbar-ultra-compact .child-chip-copy strong{max-width:70px;}.topbar.topbar-emergency{padding-inline:14px;gap:8px;}.topbar.topbar-emergency .brand-copy strong{font-size:clamp(22px,2vw,27px);}.topbar.topbar-emergency #sessionChip,
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24px);max-height:calc(100dvh - 24px);overflow:hidden;margin:auto;}.dialog>form,.dialog>.onboarding-shell{max-height:calc(100dvh - 24px);overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;}.dialog h2,.dialog p,.dialog .eyebrow{overflow-wrap:anywhere;}.dialog .form-grid label{text-align:left;}.dialog .dialog-header{min-width:0;}@media (max-width:640px){.dialog{width:calc(100vw - 18px)!important;max-width:calc(100vw - 18px)!important;max-height:calc(100dvh - 18px)!important;border-radius:24px!important;}.dialog>form,.dialog>.onboarding-shell{max-height:calc(100dvh - 18px)!important;padding:20px 16px calc(22px + env(safe-area-inset-bottom))!important;}.dialog .dialog-header,.dialog>form>.eyebrow,.dialog>form>h2,.dialog>form>p{text-align:center;margin-inline:auto;}.dialog h2{font-size:clamp(25px,7.4vw,32px)!important;line-height:1.08!important;letter-spacing:-.025em;}.dialog p{font-size:14px;line-height:1.5;}.dialog .form-grid{width:100%;grid-template-columns:1fr!important;gap:13px;}.dialog input,.dialog select,.dialog textarea{width:100%;min-width:0;font-size:16px;}.dialog-actions{justify-content:stretch;flex-direction:column-reverse;gap:9px;}.dialog-actions>*{width:100%;min-height:48px;}.dialog .button-wide{min-height:52px;}.dialog .button-ghost{white-space:normal;text-align:center;}.onboarding-heading{text-align:center;}.onboarding-heading p{max-width:36ch;margin-inline:auto;}.onboarding-mode-switch{width:100%;align-items:stretch;}.onboarding-mode{text-align:center;grid-template-columns:1fr;justify-items:center;gap:3px;min-width:0;}.onboarding-mode>span{grid-row:auto;}.onboarding-mode strong,.onboarding-mode small{width:100%;overflow-wrap:anywhere;}.onboarding-message{text-align:center;}.onboarding-cloud-intro{display:grid;grid-template-columns:auto 1fr;text-align:left;}.onboarding-cloud-intro p{text-align:left;}.onboarding-back-link{max-width:100%;white-space:normal;line-height:1.35;}.legal-dialog-heading{justify-content:center;text-align:center;}.legal-dialog-heading>div{min-width:0;}.donate-options{grid-template-columns:1fr!important;}.support-dialog .button-row{display:grid;grid-template-columns:1fr;}}@media (max-width:390px){.dialog>form,.dialog>.onboarding-shell{padding-inline:13px!important;}.onboarding-heading h2{font-size:27px!important;}.onboarding-mode-switch{grid-template-columns:1fr 1fr;}.onboarding-mode{padding:9px 6px;}.onboarding-mode strong{font-size:11.5px;}}@media (max-width:820px){.page{padding-bottom:calc(118px + env(safe-area-inset-bottom));}.subject-page .subject-overview-card{overflow:hidden;}.subject-progress{min-width:78px;min-height:78px;align-self:center;}.subject-progress .mastery-ring{margin-inline:auto;}.lesson-list,.subject-lessons{padding-bottom:24px;}}.modal-overlay,.dialog-backdrop{display:grid!important;place-items:center!important;padding:max(16px,env(safe-area-inset-top)) 16px max(16px,env(safe-area-inset-bottom))!important;overflow:auto!important;}.modal,.dialog,.onboarding-modal,.auth-modal{margin:auto!important;max-height:calc(100dvh - 32px)!important;overflow:auto!important;text-align:left!important;box-sizing:border-box!important;}.modal h1,.modal h2,.dialog h1,.dialog h2,.onboarding-modal h1,.onboarding-modal h2{text-align:center!important;line-height:1.14!important;margin-left:auto!important;margin-right:auto!important;}.modal .lead,.modal .subtitle,.dialog .lead,.dialog .subtitle,.onboarding-modal>p{text-align:center!important;max-width:42rem;margin-left:auto!important;margin-right:auto!important;}@media (max-width:700px){.modal,.dialog,.onboarding-modal,.auth-modal{width:min(100%,calc(100vw - 24px))!important;border-radius:24px!important;padding:24px 18px!important;}.modal-grid,.onboarding-grid,.auth-grid{grid-template-columns:1fr!important;}.modal label,.dialog label,.onboarding-modal label{text-align:left!important;}.modal input,.modal select,.dialog input,.dialog select,.onboarding-modal input,.onboarding-modal select{width:100%!important;min-height:52px!important;}.modal-actions,.dialog-actions,.onboarding-actions{display:grid!important;grid-template-columns:1fr!important;gap:10px!important;}.modal-actions button,.dialog-actions button,.onboarding-actions button{width:100%!important;min-height:50px!important;}.modal p,.dialog p,.onboarding-modal p{overflow-wrap:anywhere;}}.story-card{cursor:pointer;}.story-card .button,.story-card .button-soft,.story-card .button-ghost,.story-card .story-favourite{position:relative;z-index:2;}.subject-progress{display:flex;align-items:center;gap:14px;padding:12px 14px;border:1px solid #eadff8;border-radius:18px;background:#fff;max-width:340px;}.subject-progress .mastery-ring{flex:0 0 auto;}.subject-progress-copy{display:grid;gap:4px;min-width:0;}.subject-progress-copy strong{font-size:1rem;line-height:1.15;}.subject-progress-copy span{color:var(--ink-soft);font-size:.92rem;line-height:1.38;}.mastery-ring{width:82px;height:82px;}.mastery-ring:before{inset:9px;}.mastery-ring strong{position:relative;z-index:1;display:block;font-size:1.1rem;line-height:1.05;text-align:center;}.mastery-ring small{position:relative;z-index:1;display:block;font-size:.72rem;line-height:1.15;text-align:center;color:var(--ink-soft);margin-top:1px;}.reader-stage{display:flex;flex-direction:column;}.reader-primary-actions{position:relative;left:auto;right:auto;bottom:auto;z-index:10;margin:0 clamp(16px,3vw,34px) 18px;padding:10px;backdrop-filter:none;-webkit-backdrop-filter:none;}.reader-text{padding-top:0;}.reader-visual[hidden]{display:none!important;}@media (max-width:700px){.reader-page{padding-bottom:28px;}.reader-primary-actions{position:relative;left:auto;right:auto;bottom:auto;z-index:10;margin:0 14px 14px;padding:8px;border-radius:18px;}.subject-actions{justify-items:stretch;}.subject-progress{max-width:none;}}@media (max-width:820px){html,body{max-width:100%;overflow-x:clip;}main#app{padding:16px 12px calc(104px + env(safe-area-inset-bottom));}.page{padding-bottom:12px;}.card{border-radius:20px;}.page-heading h1,.reading-club-heading h1{font-size:clamp(34px,10vw,46px);line-height:1.03;overflow-wrap:anywhere;}.page-heading p,.reading-club-heading p{font-size:15px;line-height:1.5;}.subject-header{padding:20px 16px;gap:16px;}.subject-header h1{font-size:clamp(34px,10vw,48px);overflow-wrap:anywhere;}.subject-actions{width:100%;display:grid;gap:12px;}.subject-actions>a{width:100%;white-space:normal;text-align:center;}.lesson-row{padding:16px 14px;gap:12px;}.lesson-row>div:nth-child(2){min-width:0;}.lesson-row h3,.lesson-row p,.lesson-status{overflow-wrap:anywhere;}.lesson-status{display:flex;white-space:normal;line-height:1.35;}.story-card-body{padding:16px;}.story-card h3{font-size:20px;line-height:1.2;}.story-card-footer{align-items:stretch;flex-direction:column;}.story-card-footer .button{width:100%;}.reader-top{align-items:stretch;flex-wrap:wrap;}.reader-progress{order:3;flex-basis:100%;}.reader-visual,.reader-visual img{height:auto;min-height:0;aspect-ratio:4/3;object-fit:contain;}.reader-page-number{right:10px;top:10px;padding:7px 10px;font-size:12px;}.reader-primary-actions{grid-template-columns:1fr 1.15fr 1fr;margin:0 8px 12px;padding:7px;gap:7px;}.reader-primary-actions button{min-width:0;padding:9px 6px;font-size:14px;}.reader-text{padding:20px 16px 26px;font-size:clamp(22px,6.4vw,29px);line-height:1.6;overflow-wrap:anywhere;}.reader-secondary-actions{grid-template-columns:1fr 1fr;}.reader-secondary-actions>*{min-width:0;}.mobile-options-grid{grid-template-columns:1fr;}.mobile-option{min-width:0;padding:14px;}.toast-stack{left:10px;right:10px;bottom:calc(94px + env(safe-area-inset-bottom));max-width:none;}}@media (max-width:640px){.dialog{padding:0!important;overflow:hidden!important;width:calc(100vw - 18px)!important;max-height:calc(100dvh - 18px)!important;}.dialog>form,.dialog>.onboarding-shell{width:100%;max-height:calc(100dvh - 18px)!important;overflow-y:auto!important;padding:20px 15px calc(22px + env(safe-area-inset-bottom))!important;}.dialog h2{max-width:100%;font-size:clamp(25px,7vw,31px)!important;}.theme-grid{grid-template-columns:1fr;}.legal-info-grid{grid-template-columns:1fr;}}@media (max-width:390px){.topbar-actions .child-chip{display:none;}.reader-primary-actions button span{display:inline;}.reader-primary-actions button{font-size:12.5px;}}@media (max-width:820px){body{height:100dvh;min-height:100dvh;overflow:hidden;padding-bottom:0!important;}.app-shell{height:calc(100dvh - 82px - env(safe-area-inset-bottom));min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;}main#app{padding-bottom:34px!important;min-height:calc(100% - var(--topbar));}.mobile-nav{min-height:74px;max-height:82px;}body:has(dialog[open]) .mobile-nav,
  body:has(.dialog[open]) .mobile-nav{display:none!important;}body:has(dialog[open]) .app-shell,
  body:has(.dialog[open]) .app-shell{pointer-events:none;}dialog[open],.dialog[open]{position:fixed!important;inset:0!important;margin:auto!important;max-height:calc(100dvh - 18px)!important;}.reader-primary-actions{position:relative!important;inset:auto!important;}}.activity-exercise-card{overflow:hidden;}.activity-visual{min-height:170px;margin:1rem 0;padding:1rem;border:1px solid rgba(108,59,184,.18);border-radius:18px;background:linear-gradient(145deg,#fff,#faf6ff);display:grid;place-items:center;}.activity-visual svg{width:100%;max-width:520px;height:180px;fill:none;stroke:#4b356e;stroke-width:2;}.activity-visual svg text{stroke:none;fill:#4b356e;font:13px system-ui,sans-serif;}.activity-pattern,.activity-sequence,.activity-safe,.activity-count,.activity-trace{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:1rem;width:100%;}.shape-circle,.shape-square,.shape-missing,.colour-shape{width:58px;height:58px;border:3px solid #6c3bb8;background:#fff;display:inline-grid;place-items:center;transition:.18s ease;}.shape-circle,.shape-circle.colour-shape{border-radius:50%;}.shape-square,.shape-square.colour-shape{border-radius:10px;}.shape-missing{border-style:dashed;border-radius:12px;font-weight:800;font-size:1.5rem;}.colour-shape{cursor:pointer;}.colour-shape.is-coloured{background:#f39ac7;transform:scale(.96);box-shadow:0 0 0 5px rgba(243,154,199,.2);}.activity-match-grid{width:min(100%,520px);display:grid;grid-template-columns:1fr 1fr;gap:.7rem 3rem;}.activity-match-grid span,.activity-sequence span,.activity-safe span,.activity-classify span{padding:.75rem 1rem;border:2px solid rgba(108,59,184,.3);border-radius:12px;background:#fff;text-align:center;font-weight:700;}.activity-classify{width:min(100%,620px);display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:1rem;align-items:stretch;}.activity-classify > div:first-child{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;}.activity-classify strong{grid-column:1/-1;text-align:center;}.activity-bin{min-height:125px;border:3px dashed #9c78cc;border-radius:18px;display:grid;place-items:center;font-weight:800;color:#5a3f84;}.activity-safe span:nth-child(1){border-color:#e58a4b;}.activity-safe span:nth-child(2){border-color:#6c3bb8;}.activity-safe span:nth-child(3){border-color:#4f9b72;}.activity-trace span{font-size:4rem;font-weight:800;color:transparent;-webkit-text-stroke:2px #c7b8da;text-stroke:2px #c7b8da;border-bottom:2px solid #ded5e9;padding:0 1rem .4rem;}.activity-drawing-area{min-height:150px;width:100%;border:3px dashed #c8b6dd;border-radius:18px;display:flex;align-items:center;justify-content:center;gap:1rem;color:#6b5d78;}.symmetry-axis{stroke:#6c3bb8!important;stroke-width:4!important;stroke-dasharray:7 6;}.route-guide{stroke:#c6b2df!important;stroke-dasharray:9 7;}.route-start{fill:#4f9b72!important;stroke:none!important;}.route-end{fill:#e58a4b!important;stroke:none!important;}@media (max-width:640px){.activity-classify{grid-template-columns:1fr;}.activity-match-grid{gap:.6rem;}.activity-visual{padding:.65rem;min-height:150px;}.activity-visual svg{height:150px;}.shape-circle,.shape-square,.shape-missing,.colour-shape{width:46px;height:46px;}}.auth-recovery-complete{display:grid;justify-items:center;gap:12px;max-width:520px;padding:10px 4px 2px;text-align:center;}.auth-recovery-complete[hidden]{display:none;}.auth-recovery-success-icon{display:grid;width:64px;height:64px;place-items:center;border-radius:50%;background:color-mix(in srgb, var(--success, #178f5c) 15%, white);color:var(--success, #178f5c);font-size:2rem;font-weight:900;}.auth-recovery-dialog #recoveryMessage{min-height:1.5em;}@media (max-width: 820px){.mobile-nav{grid-template-columns:repeat(5, minmax(0, 1fr));gap:4px;min-height:76px;max-height:none;padding:7px 6px calc(7px + env(safe-area-inset-bottom));}.mobile-nav .nav-item,
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