#instruction-library{border:0;background:transparent;padding:0}.resource-paths{display:grid;grid-template-columns:minmax(180px,1fr) auto;align-items:end;gap:8px 18px;margin:0 0 20px}.resource-paths label{margin:0}.resource-path-actions{display:flex;gap:8px;flex-wrap:wrap}.resource-paths p{grid-column:1/-1;font-size:12px;margin:0;color:#465b72}.resource-action{display:inline-block;min-height:44px;padding:12px 16px;border-radius:6px;background:#24567f;color:#fff;text-decoration:none;font-size:14px;font-weight:650}.resource-action:hover{background:#183c65}.resource-toolbar{margin-bottom:18px}.resource-types{display:flex;flex-wrap:wrap;gap:8px}.resource-types button{display:flex;align-items:center;gap:8px}.resource-types button[aria-pressed=true]{background:#24567f;color:#fff;border-color:#24567f}.resource-icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}.resource-toolbar>label{max-width:460px}.resource-toolbar>p{font-size:13px;margin:8px 0}.resource-grid{display:grid;gap:0;background:white;border:1px solid #cddbe5;border-radius:12px;overflow:hidden}.resource-card{display:grid;grid-template-columns:104px minmax(0,1fr) auto;align-items:center;gap:18px;padding:14px 18px;background:white;color:#183c65;border:0;border-bottom:1px solid #cddbe5;border-radius:0;min-width:0;width:100%;text-align:left}.resource-card:last-child{border-bottom:0}.resource-card:hover{background:#edf4fa;color:#183c65}.resource-preview{display:block;background:#e7eff8;border-radius:6px;padding:5px;min-width:0}.resource-preview .math-model{width:100%;height:64px}.resource-print .resource-preview{background:#edf4f1}.resource-video .resource-preview{background:#eeeaf7}.resource-link .resource-preview{background:#f6eddf}.resource-card-copy{display:grid;gap:5px;min-width:0}.resource-row-title{display:flex;align-items:center;gap:8px}.resource-row-title strong{font-size:17px;line-height:1.3}.resource-meta{font-size:12px;line-height:1.4;color:#465b72;font-weight:400}.resource-open{display:flex;align-items:center;gap:10px;color:#24567f;font-size:13px;white-space:nowrap}.resource-grid>p{padding:16px}.resource-card:focus-visible{outline:3px solid #176b61;outline-offset:-4px}.resource-play{width:46px;height:46px;position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%)}.resource-play circle{fill:#24567f}.resource-play path{fill:#fff}.math-model{display:block;width:100%;max-height:165px}.model-dot{fill:#24567f}.model-green{fill:#16816b}.model-cell{fill:#fff;stroke:#7893a9;stroke-width:1}.model-rod{fill:#d7e7f5;stroke:#24567f;stroke-width:1}.model-split{stroke:#24567f;stroke-width:.7}.model-plus{font:30px system-ui;fill:#183c65}.resource-note{font-size:13px}.resource-detail-head{display:grid;grid-template-columns:minmax(220px,1fr) 2fr;gap:26px;align-items:center;margin:24px 0}.resource-detail-model{background:#e7eff8;padding:22px;border-radius:12px}.resource-detail-head h2{font-size:30px;line-height:1.2}.resource-sequence{padding-left:26px;max-width:75ch}.resource-sequence li{padding:8px 0 14px 10px}.resource-sequence h3{font-size:20px;margin:0 0 8px}.resource-sequence p{margin:0}.teaching-mat{padding:20px;background:#fff;border:1px solid #7893a9;margin:20px 0}.mat-row{display:flex;flex-wrap:wrap;gap:20px;margin:20px 0}.mat-row p{width:100%}.place-columns{display:grid;grid-template-columns:1fr 1fr;min-height:250px}.place-columns>div{border:1px solid #7893a9;padding:16px}.blank-array{display:grid;grid-template-columns:repeat(10,minmax(0,20px));gap:4px}.blank-array span{aspect-ratio:1;border:1px solid #7893a9}.visual-check-page .visual-checks{display:grid;grid-template-columns:1fr 1fr;gap:20px}.visual-checks article{padding:18px;border:1px solid #b2c1ce;break-inside:avoid}.visual-checks h2{font-size:17px}.visual-checks p{font-size:13px}.instruction-badge{font-weight:650;color:#176b61}
@media(max-width:1100px){.resource-paths{grid-template-columns:1fr}.resource-card{grid-template-columns:88px minmax(0,1fr);gap:10px 14px}.resource-open{grid-column:2}.resource-preview{grid-row:1/3}.resource-preview .math-model{height:60px}}
@media(max-width:650px){.resource-detail-head{grid-template-columns:1fr;gap:14px}.resource-card{grid-template-columns:76px minmax(0,1fr);padding:12px;gap:6px 12px}.resource-row-title{gap:6px}.resource-row-title strong{font-size:16px}.resource-row-title .resource-icon{width:17px;height:17px}.resource-meta{font-size:12px}.resource-preview .math-model{height:54px}.resource-detail-head h2{font-size:25px}.resource-types{gap:6px}.resource-types button{padding:8px 10px}.visual-check-page .visual-checks{grid-template-columns:1fr}.teaching-mat{padding:12px}.resource-path-actions>*{flex:1;text-align:center}.resource-toolbar>label{max-width:none}}
@media print{.visual-check-page .visual-checks{grid-template-columns:1fr 1fr;gap:18px}.visual-checks article{min-height:235px;padding:12px}.visual-checks .math-model{height:110px}.visual-checks h2{font-size:10pt}.visual-checks p{font-size:9pt}.instruction-print h1{font-size:19pt}.instruction-print h2{font-size:13pt;margin:14px 0 6px}.instruction-print p{font-size:11pt}.instruction-print .math-model{max-height:120px}.instruction-print .teaching-mat{border:0;padding:0}.instruction-print .mat-row{break-inside:avoid}.instruction-print .blank-array{grid-template-columns:repeat(10,28px)}.model-dot,.model-green{fill:#23354b}.model-rod{fill:#fff}.visual-check-page main{padding:0}.visual-check-page footer{font-size:8pt}}

/* Ten-frame structure: the first five stay black; extras stay orange on screen and paper. */
.math-model .model-dot.model-five{fill:#111111}.math-model .model-dot.model-extra{fill:#c44d00}.math-model{print-color-adjust:exact;-webkit-print-color-adjust:exact}

.math-model .model-moved{fill:none;stroke:#111111;stroke-width:2}

.resource-sequence>li>ul{padding-left:22px}.resource-sequence>li>ul>li{padding:3px 0 5px}.see-five-writing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.see-five-writing-grid article{padding:14px;border:1px solid #9bb9ce;border-radius:8px;break-inside:avoid}.see-five-writing-grid .math-model{height:105px}.see-five-counts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.see-five-counts label,.see-five-quantity{margin:0;font-size:14px}.see-five-counts span,.see-five-quantity span{display:block;width:60px;height:38px;border:1px solid #526e85;border-radius:4px;margin-top:5px}@media(max-width:600px){.see-five-writing-grid{grid-template-columns:1fr}}@media print{.see-five-writing-grid{grid-template-columns:1fr 1fr;gap:12px}.see-five-writing-grid article{padding:10px}.see-five-writing-grid .math-model{height:85px}.see-five-counts label,.see-five-quantity{font-size:10pt}.see-five-counts span,.see-five-quantity span{height:30px}.instruction-print ul{padding-left:20px}.instruction-print li{margin-bottom:6px}}

@media print{#paper:has(.see-five-writing){border:0;border-radius:0;background:white}.see-five-writing-grid article{border-color:#647b8e}}

@media screen{#instruction-library .resource-sequence{font-size:18px;line-height:1.55;max-width:68ch}#instruction-library .resource-sequence h3{font-size:22px;line-height:1.3;margin-bottom:10px}#instruction-library .resource-detail-head p{font-size:17px;line-height:1.55}}

 .resource-detail-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.resource-detail-tools>a{display:inline-flex;align-items:center;min-height:44px;color:#24567f;text-underline-offset:3px}.lesson-flashcards{margin:0 0 20px;padding:0;background:transparent;border:0}.lesson-flashcards p{margin:0 0 8px;font-size:17px;line-height:1.5}.lesson-card-links{display:flex;flex-wrap:wrap;gap:8px}.lesson-card-links a{display:inline-flex;align-items:center;min-height:44px;padding:10px 14px;border:1px solid #8ba1b5;border-radius:6px;background:white;color:#24567f;text-decoration:none;font-size:14px;font-weight:650}.lesson-card-links a:hover{background:#edf4fa}.lesson-card-links a:focus-visible{outline:3px solid #16816b;outline-offset:3px}

.see-five-picture{display:block;margin:8px 0 12px}.see-five-picture .math-model{min-width:0;width:100%}.see-five-quantity{display:block;text-align:center;font-size:16px;font-weight:650}.see-five-quantity span{margin:6px auto 0}.see-five-counts span,.see-five-quantity span{max-width:100%}@media print{.see-five-picture{gap:12px}.see-five-quantity{font-size:10pt}.see-five-quantity span{height:30px}}

.see-five-counts label{display:flex;flex-direction:column;align-items:center;text-align:center}

.math-model .model-dot,.math-model .model-blue{fill:#111111}.math-model .model-green{fill:#c44d00}.math-model .model-rod{fill:#eeeeee;stroke:#111111}.math-model .model-split{stroke:#111111}

.resource-detail-model .math-array{max-height:230px}.teaching-move .math-array{height:200px;max-height:230px}.teaching-move .model-partition-label{font:600 16px/1.5 system-ui;color:#111111;text-align:center;margin:8px 0}.visual-checks .math-array{max-height:190px}@media print{.visual-checks .math-array{height:135px}.instruction-print .math-array{height:145px;max-height:145px}}

/* Compact model sheets: one page for ten frames; two for larger models. */
.compact-visual-sheet main{max-width:900px;color:#111;background:white}
.compact-visual-sheet .model-sheet-page{margin:0;padding:0;border:0;border-radius:0;background:white}
.compact-visual-sheet h1{font:700 24px/1.2 Arial,sans-serif;margin:0 0 12px}
.model-sheet-meta{display:flex;justify-content:space-between;gap:12px;font:14px/1.4 Arial,sans-serif}
.model-sheet-directions{font:16px/1.4 Arial,sans-serif;color:#111;margin:12px 0}
.model-sheet-items{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(13,64px);grid-auto-flow:column;gap:0 28px}
.model-sheet-item{display:flex;align-items:center;gap:8px;min-width:0;break-inside:avoid}
.model-item-number{flex:0 0 24px;font:600 14px/1 Arial,sans-serif;color:#111}
.model-item-prompt{flex:1;min-width:0;display:flex;align-items:center;justify-content:center;gap:6px}
.compact-visual-sheet .math-model{width:100%;height:46px;max-height:46px}
.compact-visual-sheet.small-models .model-item-prompt:has(svg[viewBox="96 30 138 60"]){flex:0 1 145px}
.model-write-line{display:inline-block;flex:0 0 44px;min-height:30px;border-bottom:1.5px solid #111;text-align:center;font:600 20px/1.3 Arial,sans-serif;color:#111}
.model-array-fact{white-space:nowrap;font:600 14px Arial,sans-serif}
.large-models .model-sheet-items{grid-template-rows:repeat(7,110px)}
.compact-visual-sheet.large-models .math-model{height:82px;max-height:82px}
.compact-visual-sheet .model-sheet-page+ .model-sheet-page{margin-top:32px}
.compact-visual-sheet footer{font:12px/1.3 Arial,sans-serif;color:#444;margin-top:12px;padding-top:8px}
@media screen and (max-width:650px){.model-sheet-items{grid-template-columns:1fr;grid-template-rows:none;grid-auto-flow:row;grid-auto-rows:64px}.large-models .model-sheet-items{grid-template-rows:none;grid-auto-rows:110px}.model-sheet-meta{flex-wrap:wrap}.compact-visual-sheet main{padding:20px 14px}}
@media print{
 .compact-visual-sheet main{padding:0;margin:0;max-width:none}
 .compact-visual-sheet .model-sheet-page{break-after:page}
 .compact-visual-sheet .model-sheet-page:last-child{break-after:auto}
 .compact-visual-sheet .model-sheet-page+ .model-sheet-page{margin-top:0}
 .compact-visual-sheet h1{font-size:17pt;margin-bottom:7pt}
 .compact-visual-sheet .model-sheet-meta{font-size:10pt}
 .compact-visual-sheet .model-sheet-directions{font-size:11pt;margin:8pt 0}
 .compact-visual-sheet .model-sheet-items{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(13,42pt);grid-auto-flow:column;gap:0 18pt}
 .compact-visual-sheet.large-models .model-sheet-items{grid-template-rows:repeat(7,76pt)}
 .compact-visual-sheet .model-sheet-item{gap:5pt;padding:0;margin:0;border:0;min-height:0}
 .compact-visual-sheet .model-item-number{flex-basis:18pt;font-size:10pt}
 .compact-visual-sheet .math-model{height:32pt;max-height:32pt;print-color-adjust:exact;-webkit-print-color-adjust:exact}
 .compact-visual-sheet.large-models .math-model{height:60pt;max-height:60pt}
 .compact-visual-sheet .model-write-line{flex-basis:30pt;min-height:22pt;font-size:14pt}
 .compact-visual-sheet .model-array-fact{font-size:10pt}
 .compact-visual-sheet footer{font-size:8pt;margin-top:8pt;padding-top:6pt}
}

@media print{.compact-visual-sheet.large-models .math-array{height:72pt;max-height:72pt}.compact-visual-sheet .model-array-fact{font-size:11pt;}}

.flashcard-teacher-script{margin:12px 0;border:1px solid #9bb9ce;border-radius:8px;overflow:hidden}.flashcard-teacher-script>summary{padding:12px 14px;background:#24567f;color:#fff;font:600 16px/1.4 Arial,sans-serif;cursor:pointer;min-height:44px}.flashcard-script-content{padding:12px 16px;background:white;color:#132b48;font:16px/1.55 Arial,sans-serif}.flashcard-script-content h3{font-size:19px;margin:0 0 16px}.flashcard-script-content h4{font-size:17px;margin:18px 0 6px}.flashcard-script-content ul{padding-left:22px;margin:6px 0}.flashcard-script-content li{margin:6px 0}.flashcard-teacher-script>button{margin:0 16px 14px}.standalone-script-print{display:none}
@media print{.instruction-print .flashcard-script-content{padding:0;font-size:11pt}.instruction-print .flashcard-script-content h4{font-size:12pt;break-after:avoid}.instruction-print .flashcard-script-content li{break-inside:avoid}}