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var(--line);border-radius:10px;max-width:100%;background:white;color:var(--ink)}footer{max-width:1120px;margin:auto;padding:25px;border-top:1px solid var(--line);font-size:12px;line-height:1.8}footer a{float:right}footer p{color:#6b786b;margin:6px 0}.score{font:64px Georgia,serif}.badge{font-size:12px;background:#eee7d6;border-radius:20px;padding:6px 10px}.empty{text-align:center;padding:50px 20px}.print-question{break-inside:avoid;margin:22px 0}.print-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.print-only{display:none}table{width:100%;border-collapse:collapse;font-size:15px}td,th{text-align:left;padding:12px;border-bottom:1px solid var(--line)}@media(max-width:720px){header{padding:18px;display:block}nav{margin-top:20px;gap:16px;font-size:12px;flex-wrap:wrap}.hero{grid-template-columns:1fr}.hero-art{height:200px}.cards,.grid2{grid-template-columns:1fr}.subject{min-height:190px}.options{grid-template-columns:1fr}main{padding:28px 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.option-content{display:block;flex:1}.option-visual{display:block;margin-top:8px}.option-visual svg{width:100%;max-width:180px;max-height:180px;display:block;margin:auto}.skill-cards{margin-bottom:30px}.skill-cards .card{display:flex;flex-direction:column;align-items:flex-start}.skill-cards button{margin-top:auto}.skill-cards h3{margin-top:20px} @media print{.option-visual svg{max-width:120px;max-height:130px}.print-options>span{break-inside:avoid}}

.question-keyword{font-weight:900;text-decoration:underline;text-underline-offset:3px}.question{white-space:pre-line}.paper h3{max-width:100%;line-height:1.4}

/* Generous child-facing controls; existing colours and typography are retained. */
button,.button{min-height:56px}header{gap:20px}header nav{gap:8px;flex-wrap:wrap;justify-content:flex-end}header nav a{min-height:56px;display:flex;align-items:center;padding:10px 12px;border-radius:10px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline-color:#8a421b}
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@media(max-width:720px){header nav{justify-content:flex-start;margin-top:12px;gap:6px}header nav a{font-size:15px;padding:10px}.audio-tools .row{justify-content:flex-start}.option .answer-state{padding-left:0}.answer-confirm{align-items:stretch;flex-direction:column}.model-workbench{padding:14px}.navigator{gap:10px}.quiz>.card{padding:20px}.quiz h1{font-size:39px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.subject:hover{transform:none}}

.option{flex-wrap:nowrap}.option .answer-state{width:auto;padding-left:0;flex:0 1 auto;min-height:0;font-size:13px}.option-content{min-width:0}.option .answer-state:empty{display:none}

.parent-gate{max-width:570px;margin:24px auto}.parent-gate h1{font-size:45px}.parent-gate input[type=password]{display:block;font-size:25px;letter-spacing:5px;max-width:100%;width:280px}.parent-gate #recovery-code{letter-spacing:2px;width:100%;font-size:19px}.parent-gate button{max-width:100%}.parent-hero{display:flex;align-items:center;justify-content:space-between;gap:32px}.parent-hero p{max-width:600px}.parent-hero>button{flex-shrink:0}.parent-nav{gap:12px;display:flex;flex-wrap:wrap;margin:25px 0}.parent-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0 50px}.parent-stats>div{padding:24px;background:#e3ecdb;border-radius:18px}.parent-stats span,.parent-stats strong,.parent-stats small{display:block}.parent-stats strong{font:30px Georgia,serif;margin:14px 0;overflow-wrap:anywhere}.parent-stats small{line-height:1.6}.parent-skill-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.parent-skill-grid article{display:flex;flex-direction:column;align-items:flex-start}.parent-skill-grid h3{margin:22px 0 12px}.parent-skill-grid article>button{margin-top:auto}#parent-settings fieldset{margin:25px 0;padding:20px;border:1px solid var(--line);border-radius:14px}legend{padding:0 10px;font-weight:bold}.subject-setting{display:grid;grid-template-columns:minmax(150px,1fr) auto 190px;align-items:center;gap:15px;margin:10px 0}.subject-setting label{margin:0}.subject-setting .date-label{font-size:14px}.subject-setting input[type=date]{width:100%}#parent-reset{display:flex;flex-wrap:wrap;align-items:center;gap:15px}#parent-reset label{flex-basis:100%;margin-bottom:0}#reset-confirm,#restore-confirm{max-width:210px}#parent-message,#settings-message,#backup-message,#restore-message,#reset-message,#pin-change-message,#extra-message{font-weight:bold;white-space:pre-line}.recovery-code{font:23px monospace;overflow-wrap:anywhere;padding:24px;border:2px dashed #8b9b7b;border-radius:12px;background:#edf1e5}.recent-sessions{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.recent-sessions a{display:flex;flex-direction:column;gap:12px}.recent-sessions small{font-size:14px}#parent-access summary{min-height:56px;cursor:pointer;font-weight:bold}.break-card{margin-top:45px;text-align:center}.break-card h1{font-size:44px}.break-card .button,.break-card button{margin:7px}.parent-stats+section h2{max-width:700px}#parent-auth input{margin-bottom:16px}.parent-nav button{font-size:16px}.subject-setting label:first-child{min-height:48px;display:flex;align-items:center}#change-pin input[type=password]{width:220px;display:block}section[id^=parent-]{scroll-margin-top:25px}
@media(max-width:720px){.parent-hero{display:block}.parent-hero h1{font-size:44px}.parent-hero>button{margin-bottom:20px}.parent-stats{grid-template-columns:1fr}.parent-skill-grid,.recent-sessions{grid-template-columns:1fr}.subject-setting{grid-template-columns:1fr;gap:7px;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:16px}.subject-setting input[type=date]{max-width:240px}.parent-gate{padding:22px}.parent-gate h1{font-size:38px}#parent-settings{padding:18px}#parent-settings fieldset{padding:15px}.parent-stats strong{font-size:27px}.parent-nav{margin-top:15px}.recovery-code{font-size:19px}.parent-gate input[type=password]{width:100%}}

#backup-json{width:100%;max-width:100%;min-height:240px;font:14px/1.6 monospace;border:1px solid var(--line);border-radius:12px;padding:16px;resize:vertical;background:#fff;color:var(--ink)}textarea:focus-visible{outline:3px solid #8a421b;outline-offset:3px}

/* Keep navigation within reach even when diagrams or hints extend the question. */
html:has(.quiz-dock){scroll-padding-bottom:calc(96px + env(safe-area-inset-bottom,0px))}
body:has(.quiz-dock) footer{padding-bottom:calc(100px + env(safe-area-inset-bottom,0px))}
.quiz-dock{position:fixed;inset:auto 0 0;z-index:10;display:block;margin:0;padding:8px 18px calc(8px + env(safe-area-inset-bottom,0px));border-top:1px solid #bec9b9;background:var(--paper);box-shadow:0 -5px 18px #254c3e16}
.quiz-dock-inner{max-width:790px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.quiz-dock button{font-size:17px;min-height:56px;padding:10px 18px}.quiz-dock [data-next]{min-width:118px}
body:has(.parent-gate) main{padding-top:18px}.parent-gate{margin:0 auto;max-width:530px}.parent-gate h1{font-size:clamp(30px,5vw,41px);letter-spacing:-1px;margin:8px 0 10px}.parent-gate .pin-intro{margin:0 0 12px;line-height:1.45}.parent-gate label{margin:8px 0 5px;font-weight:bold}.parent-gate #parent-auth input{margin:0 0 5px;min-height:50px;border-color:#698073}.parent-gate #parent-message:empty,.parent-gate #parent-wait:empty{display:none}.pin-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.pin-actions .button{display:inline-flex;align-items:center}.pin-note,.pin-recovery{margin:12px 0 0}
@media(max-width:390px){.parent-gate{padding:16px}.pin-actions{gap:8px}.pin-actions button,.pin-actions .button{padding-inline:14px;font-size:16px}}
.parent-gate h1:focus{outline:none}
@media(max-width:720px){body:has(.parent-gate) header nav{display:none}}