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.turn-hint{color:#667e70}.turn-hint h3{font-size:17px;color:#526f60;margin:0 0 8px}.turn-hint>p{font-size:13px;line-height:1.9;margin:0 0 14px}.turn-steps{display:flex;gap:5px;justify-content:space-between;font-size:11px;color:#b0a28b}.turn-steps span{flex:1;text-align:center;padding:7px 3px;border-radius:7px}.turn-steps .active{background:#f4e0e9;color:#a45b80}.turn-stage{display:block;width:100%;max-width:490px;height:auto;margin:6px auto 0;background:#fffdf8;border:1px solid #efe5d2;border-radius:15px}.turn-hint .turn-caption{font-size:13px;text-align:center;min-height:49px;display:flex;align-items:center;justify-content:center;color:#987087;margin:10px 0}.turn-slider-label{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11px;color:#978b74}.turn-slider-label output{font-variant-numeric:tabular-nums;white-space:nowrap}.turn-slider{width:100%;height:38px;margin:4px 0 9px;accent-color:#b96b94;cursor:pointer;touch-action:pan-y}.turn-controls{display:flex;gap:8px}.turn-controls button{min-height:44px;flex:1;padding:10px 6px;background:#f5ead5;color:#977f58;font-size:12px;border:1px solid #e8dbc2}.turn-controls button:first-child{background:#8e5b7b;color:#fffafc;border-color:#8e5b7b}.turn-controls button:hover{filter:brightness(.97)}
@media(max-width:480px){.turn-hint h3{font-size:15px}.turn-hint>p{font-size:12px}.turn-steps{font-size:9px;gap:3px}.turn-controls{gap:5px}.turn-controls button{font-size:11px;padding:9px 3px}.turn-slider-label{font-size:10px}.turn-hint .turn-caption{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}
.cake-answer{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;font-size:13px;color:#82927b}
.cake-hint h3{font-size:17px;color:#526f60;margin:0 0 8px}
.cake-hint>p{margin:8px 0 14px}
.cake-demo-table{background:#fffaf0;border:1px solid #eadfc8;border-radius:12px;padding:14px}
.cake-demo-row{display:grid;grid-template-columns:1fr auto;gap:5px 8px}
.cake-demo-row+.cake-demo-row{border-top:1px dashed #e4d6bd;margin-top:14px;padding-top:14px}
.cake-demo-row b{font-weight:500;color:#8e7652}
.cake-demo-row strong{color:#6b8164;white-space:nowrap}
.cake-demo-pieces{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:8px}
.cake-demo-pieces span{font-size:32px;line-height:1.5;transition:opacity .25s,transform .25s}
.cake-demo-pieces .is-packed{opacity:.16;transform:scale(.8)}
.cake-demo-row small{grid-column:1/-1;color:#9a805b;font-size:13px}
.cake-demo-controls{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:16px}
.cake-demo-controls button,.cake-demo-reset{min-height:44px;padding:8px 12px;background:#f5ead5;border:1px solid #e8dbc2;color:#826d4b;font-size:12px}
.cake-demo-controls button:last-child{background:#5f8976;border-color:#5f8976;color:#fff}
.cake-demo-controls>span{white-space:nowrap;color:#806849}
.cake-demo-controls b{font-size:22px}
.cake-demo-controls button:disabled,.cake-demo-reset:disabled{opacity:.4;cursor:default}
.cake-hint .cake-demo-status{padding:10px;border-radius:8px;background:#f5ead5;color:#8a714a;line-height:1.7;margin:12px 0}
.cakes-equal .cake-demo-status{background:#e2eddb;color:#4d7253}
.cake-hint .cake-demo-note{font-size:12px;color:#8a816e;margin:10px 0 0}
@media(max-width:480px){.cake-hint h3{font-size:15px}.cake-answer{gap:8px;font-size:12px}.cake-demo-table{padding:10px}.cake-demo-pieces{gap:5px}.cake-demo-pieces span{font-size:28px}.cake-demo-controls{gap:7px}.cake-demo-controls button{padding:8px 7px;font-size:11px}.cake-demo-controls>span{font-size:11px}}
@media(prefers-reduced-motion:reduce){.cake-demo-pieces span{transition:none}}
.select-fields{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:22px}
.select-field{display:flex;align-items:center;justify-content:space-between;gap:10px;color:#74846e;font-size:13px}
.select-field select{font:inherit;min-height:48px;max-width:100%;background:#fffdf6;border:2px solid #bdcdb5;color:#526f60;border-radius:10px;padding:8px 28px 8px 10px}
.select-field select:focus-visible{outline:3px solid #e5a85d;outline-offset:3px}
.static-board .grid-cell:hover{background:transparent}
.static-sharing .share-row{cursor:default}
.static-shapes>div{position:relative;min-width:0;border:1px solid #e0d3b5;background:#fbf0d9;display:flex;flex-direction:column;align-items:center;padding:5px}
.position-label{display:block;font-size:12px;line-height:1.3;color:#7e765e;text-align:center}
.shape-matrix button .position-label{position:absolute;bottom:3px;left:0;right:0;font-size:10px}
.static-pumpkins .pumpkin{display:grid;place-items:center}
.diagram-choices .choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.diagram-choices .choice{min-width:0;width:100%;max-width:none;padding:10px 6px}
.diagram-choices .choice b{font-size:13px}
.equation-answers{display:grid;gap:16px}
.equation-answer{border:1px solid #e7ddc8;background:#faf1df;padding:16px;border-radius:14px}
.picture-groups{display:flex;align-items:center;justify-content:center;gap:12px;font-size:27px;margin-bottom:14px}
.picture-groups>span{display:flex;flex-wrap:wrap;letter-spacing:2px;overflow-wrap:anywhere}
.picture-groups>b{font-size:20px;color:#9b885f}
.study-hint h3{font-size:17px;color:#526f60;margin:0 0 10px}
.study-caption{min-height:48px;margin:0 0 14px;font-size:14px;line-height:1.9;color:#806d50}
.study-visual{background:#fffaf0;border:1px solid #ebdfc6;border-radius:14px;padding:18px;overflow:hidden;min-width:0}
.study-visual>.art{display:block;max-width:440px;max-height:370px;width:100%;margin:auto}
.study-visual .fields{margin-bottom:0}
.study-visual .activity-note{font-size:12px}
.study-visual .matching{gap:10px}
.study-visual .match-left button{padding:12px 8px}
.study-visual .match-left button span{font-size:21px}
.study-feedback{font-size:12px;color:#55775b;margin:10px 0;line-height:1.7}
.study-feedback:empty{display:none}
.study-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:14px 0 0}
.study-controls button{min-height:44px;padding:10px 13px;font-size:12px;background:#f2e7d0;border:1px solid #e2d6bb;color:#826d4b}
.study-controls [data-study-nav="next"]{background:#5f8976;color:white;border-color:#5f8976}
.study-controls [data-study-nav="reset"]{margin-left:auto}
.study-controls>span{font-size:12px;white-space:nowrap;color:#897250}
.study-note{font-size:12px;color:#8c816b;margin:12px 0 0;line-height:1.8}
.study-count{margin:8px 0 14px}
.study-count>b{font-size:12px;font-weight:500;color:#8d7855}
.study-tokens{display:flex;flex-wrap:wrap;gap:7px;margin-top:7px}
.study-token{display:inline-grid;place-items:center;border:1px solid #b7cbb1;color:#78916d;background:#f0f4e7;border-radius:50%;width:32px;height:32px;flex-shrink:0;font-size:14px}
.study-token.filled{background:#7fa38a;color:#fff;border-color:#7fa38a}
.study-equation{text-align:center;color:#5a8068;background:#e8efdc;border-radius:10px;padding:12px;margin:16px 0 0;font-size:19px;font-weight:600}
.study-rope-list{display:grid;gap:8px}
.study-rope-list>div{display:flex;align-items:center;gap:12px;padding:12px;background:#f4ecd9;border-radius:8px}
.study-rope-list b{color:#708969}.study-rope-list strong{margin-left:auto;white-space:nowrap;font-size:12px}
.study-ball-sequence>b{display:block;font-size:13px;margin-bottom:15px}.study-ball-sequence>div{display:flex;flex-wrap:wrap;gap:7px;justify-content:center}
.study-gems{display:flex;justify-content:center;gap:15px}.study-gems>div{text-align:center;min-width:0}.study-gems svg{width:50px;max-width:100%;display:block}.study-gems b{font-size:24px;color:#aa8355}
.study-share-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.study-share-cards>div{background:#f4ecd9;border-radius:10px;padding:12px;text-align:center}.study-share-cards b{font-size:13px;display:block;color:#8b7956}.study-share-cards span{font-size:26px}
.study-pattern{display:grid;gap:10px}.study-pattern>div{display:flex;justify-content:center;gap:8px;border:1px dashed #cebfa4;border-radius:8px;padding:7px}.study-pattern svg{width:42px;max-width:20%}
.study-toys>div{font-size:27px;border:1px dashed #ccbd9e;padding:10px;margin:8px 0;border-radius:10px;text-align:center}.study-toys strong{background:#e5eddb;border-radius:6px;padding:2px}.study-toys .next-toys{text-align:left}
@media(max-width:600px){.diagram-choices .choices{grid-template-columns:1fr}.diagram-choices .choice{flex-direction:row;justify-content:center;gap:14px}.diagram-choices .choice .art{width:70%;max-width:240px}.diagram-choices .choice b{font-size:12px}.study-visual{padding:12px}.study-caption{font-size:13px}.study-hint h3{font-size:15px}.study-controls{gap:6px}.study-controls button{padding:9px;font-size:11px}.study-controls [data-study-nav="reset"]{margin-left:0}.study-visual .matching{grid-template-columns:1fr}.study-visual .match-right{display:flex;gap:6px;flex-wrap:wrap}.study-visual .match-right button{flex:1;font-size:12px;padding:8px}.study-visual .match-left button span{font-size:20px}.study-visual .candy-selector{gap:5px}.study-visual .candy-selector button{padding:5px}.study-visual .children-selector button{padding:6px;font-size:10px}.study-visual .children-selector button>span{font-size:25px}.study-visual .pumpkin-row{gap:2px}.study-visual .pumpkin{font-size:19px}.study-visual .pumpkin-box{padding:2px}.study-visual .shape-matrix{gap:3px}.study-visual .shape-matrix button{min-height:48px}.study-visual .sharing .cake-pile{gap:2px}.study-visual .sharing .cake-pile span{font-size:22px}.study-equation{font-size:16px}.study-rope-list>div{font-size:11px;gap:7px;padding:8px}.study-gems{gap:8px}.study-toys>div{font-size:22px}.picture-groups{font-size:23px;gap:8px}.equation-answer{padding:12px}.select-field{font-size:12px}.static-shapes>div{padding:3px}.position-label{font-size:10px}}
.study-visual .shape-matrix button{padding-bottom:18px}
.study-visual .placed-candies{top:3px;bottom:auto;right:3px;left:auto}
.study-visual .pumpkin-row{flex-wrap:wrap}
.study-visual .pumpkin-field{padding:6px}
@media(max-width:480px){.study-visual .grid-cell{font-size:22px;padding:4px}.study-visual .grid-cell small{font-size:8px;padding:2px}.study-visual .shape-matrix button .position-label{font-size:9px}}
.study-visual .children-selector{gap:6px}
.study-visual .children-selector button{min-width:0;max-width:105px;flex:1}
.study-visual .palette{flex-wrap:wrap;gap:6px}

/* The library keeps original IDs and progress separate from the new practice book. */
.collection-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:22px 0}
.collection-tabs button{display:flex;flex-direction:column;align-items:flex-start;gap:9px;padding:20px 24px;border:1px solid #d9dfd3;background:#fffdf7;text-align:left;border-radius:18px}
.collection-tabs button.active{background:#e6eee1;border-color:#5b8c73;box-shadow:inset 0 0 0 1px #5b8c73}
.collection-tabs b{font-size:17px}.collection-tabs span{font-size:12px;color:#617266}
.directory-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:18px 0 24px}
.directory-bar .journey-meta{margin:0;display:flex;flex-direction:column;gap:5px;font-size:13px}
.directory-redo{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin:0 0 20px;padding:13px 16px;border:1px dashed #cbd8c1;border-radius:12px;background:#f0f3e9}.directory-redo p{margin:0;flex:1;min-width:150px;color:#718267;font-size:12px}.directory-redo button{white-space:nowrap;min-height:44px}
.directory-filters{display:flex;gap:5px;flex-shrink:0}.directory-filters button{background:transparent;padding:10px 14px;font-size:13px;border:1px solid transparent}.directory-filters .active{background:#f4e5c9;border-color:#e8d5ad}
.library-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.library-cards .day-card{display:block;padding:22px;min-width:0}.library-cards .day-card h3{font-size:19px;margin:20px 0 14px}.library-cards .day-card h3 a{display:flex;align-items:center;justify-content:space-between;gap:10px}.library-cards .day-card h3 span{color:#6d8b72}
.directory-questions{list-style:none;margin:0;padding:0}.directory-questions li+li{border-top:1px solid #eee9df}.directory-questions a{display:flex;align-items:center;gap:10px;min-height:71px;padding:9px 0}.directory-questions a:hover b{color:#247866}.directory-questions a>span:nth-child(2){flex:1;min-width:0}.directory-questions b{display:block;font-size:14px;font-weight:500;line-height:1.5}.directory-questions small{display:block;font-size:10px;color:#7f8b7f;margin-top:4px}.directory-questions .directory-star{display:grid;place-items:center;width:27px;height:27px;flex-shrink:0;border:1px solid #d9dfd3;border-radius:50%;font-size:12px;color:#87927f}.directory-questions .solved .directory-star{background:#fff0ca;color:#c19637;border-color:#ead5a4}.directory-questions .solved>span:last-child{color:#638a6f}
.directory-empty{padding:40px;text-align:center;background:#fffaf1;border-radius:16px}.directory-empty button{display:block;margin:20px auto 0}
.station-switch{display:block;margin-top:25px;font-size:12px;color:#788573}.station-switch select{display:block;width:100%;margin-top:9px;padding:11px 8px;border:1px solid #d6dccf;border-radius:9px;background:#fffdf6;color:#3d5e4d;font:inherit}
.practice-count{padding:10px 12px;border:1px solid #deded1;border-radius:12px;background:#fffcf4}.practice-count>b{font-size:13px;display:block;margin-bottom:12px}.practice-count>div{display:flex;gap:7px;justify-content:center;flex-wrap:wrap}.count-dot{border-radius:50%;width:31px;height:31px;display:inline-grid;place-items:center;background:#6b9b7e;color:white;font:16px sans-serif}.count-dot.faded{opacity:.22}.practice-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px auto;max-width:520px}
.new-scene{margin:15px auto;max-width:560px}.new-scene>.art{max-height:340px}.new-scene:empty{display:none}.practice-fields{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:18px;margin:20px 0}.practice-options{border:0;margin:0;padding:0;min-width:0;width:100%}.practice-options legend{text-align:center;width:100%;font-size:13px;color:#758674;margin-bottom:12px}.practice-options .choices{display:flex;flex-wrap:wrap;justify-content:center;margin:0;align-items:stretch}.practice-options .choice{font-size:24px;flex:1;min-width:70px;max-width:250px;padding:12px}.practice-options .choice>.art{width:100%;max-height:150px}.practice-options .choice>b{display:block;font-size:14px;margin-top:8px}.practice-options .choice .checkmark{font-size:14px}.practice-equations{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.practice-equations>.art{width:180px}.practice-pair{display:flex;gap:20px;justify-content:center}.practice-pair>div{width:46%;text-align:center}.practice-pair b{font-size:14px}.practice-pair .art{width:100%;margin-top:14px}.fruit-equations{text-align:center;font-size:31px;line-height:2.2}
.practice-pattern{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;padding:12px 0}.pattern-token{display:flex;align-items:center;justify-content:center;font-size:30px;color:#627c8a}.pattern-bead{display:block;width:28px;height:28px;border-radius:50%;border:2px solid #fff7e5;box-shadow:0 0 0 1px #d1c4b0}.pattern-bead.red{background:#d87979}.pattern-bead.blue{background:#6a9ec1}.practice-pattern .group-start:not(:first-child){margin-left:16px}.practice-options .practice-pattern{gap:5px}.practice-options .pattern-token{font-size:22px}.practice-options .pattern-bead{width:24px;height:24px}
.exercise-p51 .choice{flex-basis:28%;max-width:150px}.exercise-p82 .choices{flex-direction:column;align-items:stretch}.exercise-p82 .choice{display:flex;align-items:center;justify-content:space-between;max-width:100%;flex-direction:row;gap:15px}.exercise-p82 .choice b{margin:0 15px}.exercise-p82 .practice-pattern{flex:1}.exercise-p52 .choice,.exercise-p92 .choice{min-width:130px}.exercise-p63 .new-scene>.art{max-height:260px}.exercise-p63 .choice>.art{max-height:130px}
.slide-rule{display:flex;gap:7px;flex-direction:column;padding:12px 15px;background:#eff3e9;border-radius:12px;text-align:center;font-size:12px}.slide-rule b{font-size:15px}.slide-scene{margin:18px auto 0;max-width:650px}.slide-inputs{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:7px}.slide-inputs .number-field{min-width:0;display:flex;flex-direction:column;font-size:11px;gap:8px}.slide-inputs input{width:100%;max-width:66px;text-align:center;padding:3px;height:50px;font-size:24px}.slide-direction{text-align:center;font-size:12px;color:#796b55;margin:15px 0}.ball-slide-hint .study-visual{padding:5px}.ball-slide-hint .study-visual>.art{max-height:480px}.slide-target{margin:15px 0}.slide-target summary{cursor:pointer;font-size:13px;color:#54775f}.slide-target>.art{max-height:350px}.ball-slide-hint .study-controls{flex-wrap:wrap}
@media(max-width:1000px){.library-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.station-switch{margin-top:12px;max-width:100%}.practice-side .station-switch select{width:100%}}
@media(max-width:600px){.library-hero .hero-art{right:4px;width:115px}.library-hero .hero-art>.art{width:115px}.library-hero .hero-copy{width:78%}.library-hero .hero-note{font-size:10px;max-width:190px}.collection-tabs{gap:7px;margin:16px 0}.collection-tabs button{padding:13px 10px;gap:8px;border-radius:12px}.collection-tabs b{font-size:12px}.collection-tabs span{font-size:10px}.directory-bar{align-items:flex-start;flex-direction:column;gap:12px;margin-bottom:15px}.directory-bar .journey-meta{font-size:11px;flex-direction:row;gap:18px}.directory-filters button{padding:8px 13px;font-size:12px}.library-cards{grid-template-columns:1fr;gap:12px}.library-cards .day-card,.library-cards .day-card:last-child{display:block;grid-column:auto;padding:16px 20px}.library-cards .day-card h3,.library-cards .day-card:last-child h3{font-size:17px;margin:15px 0 6px}.directory-questions a{min-height:60px}.directory-questions b{font-size:14px}.directory-questions small{font-size:10px}.library-hero{min-height:290px}.station-switch{font-size:11px;margin:10px 0 0}.station-switch select{max-width:100%;padding:9px}.practice-count{padding:10px 6px}.practice-count>b{font-size:11px}.practice-count>div{gap:4px}.count-dot{width:24px;height:24px;font-size:13px}.practice-groups{gap:8px}.practice-options .choice{font-size:22px;min-width:60px;padding:9px}.practice-fields{gap:15px}.practice-fields .number-field{flex-direction:column}.practice-fields .number-field input{width:65px}.practice-options legend{font-size:12px}.practice-pattern{gap:5px}.pattern-bead{width:23px;height:23px}.pattern-token{font-size:23px}.practice-options .pattern-bead{width:20px;height:20px}.practice-options .pattern-token{font-size:23px}.practice-equations{gap:2px}.practice-equations>.art{max-width:190px;width:90%}.fruit-equations{font-size:23px}.practice-pair{gap:10px}.exercise-p52 .choices,.exercise-p92 .choices{flex-direction:column;align-items:stretch}.exercise-p52 .choice,.exercise-p92 .choice{max-width:none;width:100%;display:flex;flex-direction:row;gap:12px}.exercise-p52 .choice>.art,.exercise-p92 .choice>.art{max-width:70%;max-height:170px}.exercise-p63 .choice{flex-basis:29%;min-width:0}.slide-inputs{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px 8px}.slide-inputs .number-field{font-size:11px}.slide-inputs input{height:46px}.slide-direction{font-size:10px}.slide-rule{font-size:11px}.slide-rule b{font-size:13px}.ball-slide-hint .study-visual{margin-left:-5px;margin-right:-5px}.ball-slide-hint .study-controls button{font-size:11px;padding:9px}.slide-scene{margin-left:-7px;margin-right:-7px}.slide-target summary{font-size:12px}}

/* Exam pages share the familiar question illustrations and answer controls. */
.exam-home-card{display:flex;align-items:center;flex-wrap:wrap;gap:15px;background:#fff5df;border:1px solid #e7d9b6;border-radius:20px;padding:25px 30px;margin-top:22px}.exam-home-card>div{flex:1;min-width:220px}.exam-home-card .eyebrow{display:block;margin-bottom:8px}.exam-home-card h2{font-size:22px;margin-bottom:8px}.exam-home-card p{font-size:13px;margin:0;color:#817859}
.exam-main{max-width:920px;margin:0 auto;padding:30px 35px 50px}.exam-main>h1{font-size:29px;margin:22px 0}.exam-intro,.exam-score{padding:30px;background:#edf2e5;border:1px solid #dce5d4;border-radius:22px;margin-bottom:30px}.exam-intro h2{margin-top:20px;font-size:25px}.exam-intro p{font-size:14px}.exam-intro .muted,.exam-score .muted{font-size:12px}.exam-resume{border-top:1px solid #cfdcc5;padding-top:20px;margin-top:20px}.exam-resume .plain-btn{margin-left:20px}.exam-history ul{padding:0;list-style:none}.exam-history li{border-bottom:1px solid var(--line)}.exam-history li>a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:20px 8px}.exam-history li small{display:block;font-size:12px;font-weight:400;margin-top:6px;color:#7b8d85}.exam-history li strong{font-size:29px;color:var(--green)}.exam-history li strong small{display:inline}.exam-history .section-top{gap:12px}.exam-history h2{font-size:21px;margin:0}.exam-history>p{margin-top:20px}
.exam-status{display:flex;justify-content:space-between;gap:12px;font-size:13px;margin-bottom:14px}.exam-status a{color:var(--green);text-decoration:underline}.exam-numbers{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px}.exam-numbers a{display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid #d5ddcf;border-radius:12px;min-height:61px;background:#fffdf7;gap:5px}.exam-numbers small{font-size:10px;color:#778772}.exam-numbers .answered{background:#e4eddd;border-color:#95b181}.exam-numbers [aria-current]{outline:2px solid #267965;outline-offset:1px}.exam-note{font-size:12px;color:#73836c;margin:18px 0}.exam-main .question-card{min-width:0}.exam-main .question-card h2{font-size:26px}.exam-message{color:#a25729;font-size:13px;line-height:1.8}.exam-message:empty{display:none}.exam-submit-row{text-align:center;margin-top:16px}.exam-score>strong{font-size:64px;font-weight:800;color:var(--green)}.exam-score strong small{font-size:18px;font-weight:400}.exam-score>p{margin:8px 0}.exam-score .dialog-actions{margin-top:20px}
.exam-result{border:1px solid #d9dfd3;border-radius:16px;background:#fffdf7;margin:12px 0;overflow:hidden}.exam-result>summary{display:flex;align-items:center;gap:12px;cursor:pointer;padding:20px;font-size:15px;list-style:none}.exam-result>summary::-webkit-details-marker{display:none}.exam-result>summary b{flex:1}.exam-result>summary>span:last-child{font-size:12px;color:#508069;white-space:nowrap}.exam-result.incorrect>summary>span:last-child{color:#ab6a32}.result-number{border-radius:50%;background:#e9eddf;min-width:30px;height:30px;display:grid;place-items:center;font-size:13px}.exam-result summary:after{content:'＋';color:#71856a}.exam-result[open] summary:after{content:'−'}.exam-result-body{padding:24px;border-top:1px dashed #dddcc9}.exam-result-body h3{font-size:17px;background:#e8eedf;padding:12px 16px;border-radius:8px}.exam-result-body .exercise{margin:15px auto 28px}.exam-readonly button:disabled,.exam-readonly input:disabled,.exam-readonly select:disabled{opacity:1;color:inherit;-webkit-text-fill-color:currentColor}.exam-readonly button,.exam-readonly input,.exam-readonly select{pointer-events:none}.exam-explanation{background:#f5ecd8;padding:18px;border-radius:12px;margin:20px 0}.exam-explanation p{margin:8px 0 0;font-size:14px}.mistake-list{margin:25px 0}.mistake-list article{padding:24px;background:#fffdf7;border:1px solid #e2e4d8;border-radius:16px;margin:12px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.mistake-list h2{font-size:20px;margin:12px 0 8px}.mistake-list p{font-size:12px;margin:0;color:#7b8d85}.mistake-list .secondary-btn{white-space:nowrap}.directory-filters [aria-pressed=true]{background:#f4e5c9;border-color:#e8d5ad}
@media(max-width:750px){.site-header{height:auto;min-height:85px;flex-wrap:wrap;gap:12px;padding-top:16px;padding-bottom:14px}.site-header nav{flex-wrap:wrap;gap:10px}.exam-main{padding:20px 16px 35px}.exam-main>h1{font-size:25px}.exam-main .question-card{padding:22px 18px}.exam-main .question-card h2{font-size:22px}.exam-intro,.exam-score{padding:24px 20px}.exam-numbers{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.exam-home-card{padding:22px;gap:12px}.exam-home-card>div{flex-basis:100%;min-width:0}.exam-home-card h2{font-size:21px}.exam-home-card p{font-size:12px}.exam-home-card .primary-btn{font-size:13px;padding:12px 15px}.exam-history h2{font-size:18px}.exam-result>summary{gap:8px;padding:15px 12px;font-size:13px}.exam-result>summary>span:last-child{font-size:10px}.exam-result-body{padding:20px 12px}.exam-result-body .exercise{min-height:0}.exam-result .result-number{min-width:24px;height:24px}.exam-result summary:after{display:none}.mistake-list article{padding:20px;align-items:flex-start;flex-direction:column;gap:14px}.mistake-list .skill-badge{font-size:10px}.exam-header{flex-wrap:nowrap}.exam-header>.plain-btn{font-size:11px;white-space:nowrap}.exam-header .brand{gap:7px;font-size:18px}.exam-header .brand small{font-size:8px;letter-spacing:0}.exam-status{font-size:12px}}

/* Recognizable, countable objects in the new practice scenes. */
.picture-groups-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:start;margin:12px auto;max-width:560px}
.picture-group{min-width:0;text-align:center;padding:12px;background:#fffdf7;border:1px solid #e9dfce;border-radius:16px}
.picture-group h4,.bird-scene h4,.picture-truck h4,.packed-plate h4{display:flex;align-items:center;justify-content:center;gap:8px;font-weight:500;font-size:13px;margin:0 0 10px;color:#657b67}
.picture-group>.art{display:block;width:100%;max-width:300px;max-height:none;margin:0 auto}
.picture-animal{display:inline-block;width:48px;height:48px;flex-shrink:0}.picture-animal .art{width:48px;height:48px;display:block}
.flower-rows{max-width:410px;margin:auto}.flower-rows>.picture-group{margin:10px 0;padding:10px 14px;display:grid;grid-template-columns:70px minmax(0,1fr);align-items:center;gap:10px}.flower-rows h4{margin:0}.flower-rows>.picture-group>.art{width:100%;max-width:300px}
.picture-next{margin:14px auto 0;padding:12px;text-align:center;border:2px dashed #b6c8a5;border-radius:12px;font-size:12px;color:#77906a}
.bird-scene{max-width:500px;margin:auto}.bird-scene>.art{display:block;width:100%;max-height:280px}.departed-birds{margin:12px auto 0;border:1px dashed #aec4cc;border-radius:14px;background:#edf6f7;padding:10px;max-width:320px}.departed-birds>.art{width:100%;max-height:130px}.departed-birds h4{margin-bottom:0}
.picnic-scene>.picture-group{max-width:360px;margin:0 auto 18px;background:#f7eee5}.picnic-scene>.picture-group>.art{max-width:300px}.picnic-scene .picture-groups-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.picnic-scene .picture-group h4{flex-direction:column}
.cookie-sharing .picture-groups-grid{grid-template-columns:1fr;max-width:430px}.cookie-sharing .picture-group{display:grid;grid-template-columns:70px minmax(0,1fr);align-items:center;gap:12px}.cookie-sharing .picture-group h4{flex-direction:column;margin:0}.cookie-sharing .picture-group>.art{max-width:300px}
.packed-plates{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.packed-plate{width:180px;max-width:100%}.packed-plate>.art{width:100%}.packed-plate h4{margin:0}
.shipping-scene{max-width:440px;margin:auto}.picture-truck{display:flex;align-items:center;gap:10px}.picture-truck h4{flex-shrink:0;margin:0;width:60px}.picture-truck>.art{width:calc(100% - 70px);max-height:118px}.shipping-scene>.picture-group{margin-top:15px}.shipping-scene>.picture-group>.art{max-width:340px}
.illustrated-equations>div{display:flex;justify-content:center;align-items:center;gap:12px;margin:10px 0}.illustrated-equations .art{width:62px;height:62px}.illustrated-equations b{font-size:27px;font-weight:500;white-space:nowrap}
@media(max-width:600px){.picture-groups-grid{gap:8px}.picture-group{padding:9px 7px;border-radius:12px}.picture-group h4,.bird-scene h4,.picture-truck h4,.packed-plate h4{font-size:11px;gap:5px;margin-bottom:8px}.picture-animal,.picture-animal .art{width:43px;height:43px}.picnic-scene .picture-groups-grid{grid-template-columns:1fr}.picnic-scene .picture-groups-grid .picture-group{display:grid;grid-template-columns:66px minmax(0,1fr);align-items:center;gap:8px}.picnic-scene .picture-groups-grid .picture-group>.art{max-width:200px}.cookie-sharing .picture-group{grid-template-columns:60px minmax(0,1fr);gap:7px}.flower-rows>.picture-group{grid-template-columns:46px minmax(0,1fr);gap:6px;padding:7px}.flower-rows h4{font-size:10px}.picture-next{font-size:11px;padding:9px}.packed-plate{width:155px}.picture-truck{gap:4px}.picture-truck h4{width:43px;margin:0;font-size:10px}.picture-truck>.art{width:calc(100% - 47px)}.illustrated-equations>div{gap:7px}.illustrated-equations .art{width:45px;height:49px}.illustrated-equations b{font-size:23px}.study-visual .picture-group{padding:7px 4px}}

.speech-settings{display:grid;gap:16px}.speech-settings label{display:grid;gap:8px}.speech-settings select{max-width:100%;width:100%;padding:10px;border:1px solid #b9cbbb;border-radius:10px;background:#fff;color:inherit;font:inherit}.question-meta{flex-wrap:wrap}

/* Route matching uses large diagrams that stay legible on a phone. */
.collection-tabs{grid-template-columns:repeat(5,minmax(0,1fr))}
.friends-home-card{background:#f3f0e4;border-color:#dfcfac}
.friend-board{width:100%;max-width:360px;margin:0 auto}.friend-board>.art{display:block;width:100%;max-height:none}
.friend-rule{font-size:14px;text-align:center;color:#6a764f}.friend-options .choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.friend-options .choice{display:flex;flex-direction:column;align-items:center;max-width:none;min-width:0;width:100%;padding:10px}.friend-options .choice .friend-board{max-width:280px}.friend-options .choice>b{font-size:16px;margin:10px 0 0}
@media(max-width:650px){.collection-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.friend-options .choices{grid-template-columns:1fr;gap:14px}.friend-options .choice{padding:14px}.friend-rule{font-size:12px}}

/* Repeating patterns: answer with pictures; exploration belongs in the hint. */
.patterns-home-card{background:#edf1e9;border-color:#cbdcc9}
.pattern-direction{font-size:13px;line-height:1.7;text-align:center;color:#647562;margin:0 0 13px}
.pattern-board{width:100%;max-width:540px;margin:auto}.pattern-board>.art{display:block;width:100%;height:auto;max-height:none}
.pattern-board[data-pattern-layout=ring]{max-width:400px}.pattern-board[data-pattern-layout=bend]{max-width:440px}
.pattern-options .choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:100%;max-width:430px;margin:auto}
.pattern-options .choice{min-width:0;width:100%;max-width:none;padding:12px 6px;display:flex;align-items:center;flex-direction:column;gap:3px;font-size:13px}
.pattern-options .choice>.art{width:60px;height:69px;max-width:100%}.pattern-options .choice>b{font-size:13px}
.pattern-unit{display:flex;flex-direction:column;align-items:center;gap:5px;border:1px dashed #d3b786;background:#fff6e3;border-radius:14px;padding:12px;margin:14px auto 0;max-width:340px}.pattern-unit>span{font-size:13px;color:#7d6946}.pattern-unit>div{display:flex;justify-content:center;max-width:100%}.pattern-unit .art{width:50px;min-width:0}.pattern-unit small{font-size:12px;line-height:1.6;text-align:center;color:#75674b}
.pattern-focus{animation:pattern-focus-in .35s ease-out}.pattern-reveal{animation:pattern-reveal-in .4s ease-out}
@keyframes pattern-focus-in{from{opacity:.25}to{opacity:1}}@keyframes pattern-reveal-in{from{opacity:0}to{opacity:1}}
@media(prefers-reduced-motion:reduce){.pattern-focus,.pattern-reveal{animation:none}}
@media(max-width:650px){.pattern-options .choice{padding:8px 4px}.pattern-options .choices{gap:7px}.pattern-options .choice>b{font-size:12px}.pattern-options .choice>.art{width:48px;height:58px}.pattern-direction{font-size:12px}.pattern-unit{padding:10px 6px}}
/* Original mock papers: retain diagram order, numbered blanks and source artwork. */
.collection-tabs{grid-template-columns:repeat(4,minmax(0,1fr))}
.mock-home-card{background:#fff2d5;border-color:#e4c98e}.mock-home-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;flex-shrink:0}.paper-exams{background:#fff4dc;border:1px solid #e5d1a7;border-radius:20px;padding:28px;margin:25px 0}.paper-exams h2{font-size:24px}.paper-exams p{font-size:14px}
.mock-scene{width:100%;margin:12px auto}.mock-scene>.art{display:block;width:100%;height:auto;max-height:none;margin:auto}.mock-object-row{display:flex;align-items:center;justify-content:center;gap:8px}.mock-object-row>.art{width:45%;min-width:0;height:auto}.mock-object-row>.art:only-child{width:310px;max-width:100%}.mock-object-row>div{width:46%;min-width:0}.mock-object-row>div>.art{width:100%;height:auto}.mock-plus{font-size:26px;color:#9a8857}.mock-equation{text-align:center;font-size:24px;color:#846d40;margin:12px 0}
.mock-options .choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:630px;width:100%;margin:auto}.mock-options .choice{min-width:0;max-width:none;width:100%;padding:12px 10px;display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:20px}.mock-options .choice>.art{display:block;width:100%;height:auto;max-height:180px;min-width:0}.mock-options .choice>b{font-size:14px;margin:9px 0 0}.mock-options-four .choices,.mock-options-location .choices,.mock-options-mirror .choices{grid-template-columns:repeat(4,minmax(0,1fr))}.mock-options-location .choice{padding:10px 5px}.mock-options-location .choice>span:not(.checkmark){font-size:14px;margin:0 0 6px}.mock-options-location .choice>.art{width:46px;height:46px}.mock-options-routes .choice{padding:12px 5px}.mock-options-routes .choice>.art{max-height:none}.mock-options-mirror .choice{padding:8px}.mock-options-mirror .choice>.art{max-height:200px}
.mock-shape-grid{display:grid;gap:15px;align-items:start}.mock-shape-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.mock-shape-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.mock-shape-grid>div{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:15px}.mock-shape-grid .art{width:100%;height:auto}.mock-shape-grid small{font-size:12px;white-space:nowrap}.mock-turn-half{transform-origin:50px 50px;transform:rotate(180deg);animation:mock-half-turn 1.8s ease-in-out}.mock-wheels{display:flex;align-items:center;gap:5px}.mock-wheels>div{width:calc((100% - 26px)/2);min-width:0;text-align:center}.mock-wheels .art{width:100%;height:auto}.mock-wheels>span{font-size:25px;color:#c06446}.mock-wheels b{display:block;font-size:15px;margin:5px}.mock-code-example{display:flex;justify-content:center;gap:30px;align-items:flex-start}.mock-code-example>div{width:42%;max-width:190px;display:flex;flex-direction:column;align-items:center;gap:8px}.mock-code-example .art{width:100%;max-width:150px}.mock-code-example p{font-size:15px;text-align:center}.mock-code-hint .art{display:block;width:240px;max-width:100%;margin:auto}.mock-mirror-lesson>.art{max-width:420px;width:100%;margin:auto;display:block}.mock-mirror-lesson p{text-align:center;font-size:14px}.mock-mirror-match{display:flex;align-items:center;gap:15px;font-size:16px}.mock-mirror-match .art{width:120px;flex-shrink:0}
@keyframes mock-half-turn{from{transform:rotate(0)}to{transform:rotate(180deg)}}
@media(prefers-reduced-motion:reduce){.mock-turn-half{animation:none}}
@media(max-width:650px){.collection-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.mock-home-actions{width:100%;gap:8px}.mock-home-actions .primary-btn,.mock-home-actions .secondary-btn{padding:12px;font-size:12px}.paper-exams{padding:20px}.mock-options .choices{gap:6px}.mock-options .choice{padding:9px 5px;font-size:18px;min-height:52px}.mock-options .choice>b{font-size:12px}.mock-options-routes .choices{grid-template-columns:1fr}.mock-options-routes .choice{padding:14px}.mock-options-mirror .choices{grid-template-columns:repeat(2,minmax(0,1fr))}.mock-shape-grid{gap:8px}.mock-shape-grid small{font-size:10px}.mock-options-location .choice>.art{width:38px;height:38px}.mock-options-location .choice>span:not(.checkmark){font-size:12px}.mock-equation{font-size:18px}.mock-code-example{gap:15px}.mock-mirror-match{font-size:13px}.mock-mirror-match .art{width:95px}.mock-wheels b{font-size:12px}}