/* ── operation_order_nested2_3（四そくと二重かっこの計算じゅんじょ、単元仕様書 v1.2）── */
/* 画面：問題文（文のあとに改行して式）の下に答えの欄、回答案内、テンキー、「こたえる！」ボタン（§5-1・§7 画面表示）。図は使わない。 */
.oon-main{display:none}
.oon-fields{display:flex;justify-content:center;align-items:center;gap:8px;margin:6px auto 2px}
.oon-input{width:6em;max-width:70vw;min-height:44px;font-size:1.4rem;padding:4px 8px;border:3px solid #1d4ed8;background:#eff6ff;border-radius:10px;text-align:center;font-family:inherit;box-sizing:border-box}
.oon-input:focus-visible{outline:3px solid #1d4ed8;outline-offset:2px}
.oon-input:disabled{background:#f8fafc;color:#111827;opacity:1;border-color:#94a3b8}
.oon-input.oon-input-ok{border:3px solid #15803d;background:#dcfce7}
.oon-input.oon-input-ng{border:3px dashed #b91c1c;background:#fff1f2}
.oon-guide{margin:6px auto 4px;font-weight:700;text-align:center;max-width:32em}
.oon-msg{margin:2px auto 0;color:#b91c1c;font-weight:700;font-size:.95rem;text-align:center;max-width:32em}
.oon-msg:empty{display:none}
.feedback.has-text.oon-feedback{height:auto;min-height:40px;padding:4px 0;text-align:center;line-height:1.45}
.oon-correct{margin:2px 0 6px;font-weight:700}
.oon-expl-text{margin:4px 0 6px;overflow-wrap:anywhere}
.oon-lesson-ex{display:inline-block;margin-top:4px;font-weight:700;overflow-wrap:anywhere}
.oon-lesson-ref{margin:4px 0 0;font-size:.9em;color:#475569}
/* 式の中の数・記号・かっこは同じ行に保ち、途中で改行しない（§7 画面表示。320×568で横スクロール0）。 */
#page-quiz.active:has(.oon-main) #question-text{word-break:keep-all;overflow-wrap:normal;line-break:strict}
#page-quiz.active:has(.oon-main) #hint-area .kp-card{display:flex;align-items:flex-start;gap:8px}
#page-quiz.active:has(.oon-main) #hint-area .kp-head{margin-bottom:0;flex:none}
#page-quiz.active:has(.oon-main) #hint-area .kp-title:empty{display:none}
#page-quiz.active:has(.oon-main) #hint-area .kp-body{flex:1;min-width:0;padding-left:0;white-space:pre-line;overflow-wrap:anywhere}

/* 印刷：A4縦・2列×5段・1ページ（§7。用紙の余白10mm、本文190×277mm、列92mm・列の間6mm、各問の領域37mm：
   番号と式の行9mm、計算欄14mm（幅89mm）、答えを書く行9mm（（　）の中は幅24mm）、下の余り5mm。答えの行は10pt・2行まで8mm）。 */
.oon-pr-page{width:190mm;height:277mm;box-sizing:border-box;display:flex;flex-direction:column;padding:0;margin:0 auto 8mm;overflow:hidden;background:#fff;color:#000;font-family:'Atkinson Hyperlegible','BIZ UDPGothic','Yu Gothic','Meiryo',sans-serif}
.oon-pr-head{display:flex;flex-direction:column;flex:none;box-sizing:border-box;width:190mm;height:23.5mm}
.oon-pr-title{box-sizing:border-box;margin:0;height:9mm;font-size:14.3pt;font-weight:700;line-height:7.8mm;text-align:center;white-space:nowrap;padding:0;border:1.5pt solid #666;background:#ffffcc;print-color-adjust:exact;-webkit-print-color-adjust:exact}
.oon-pr-inst{flex:none;box-sizing:border-box;margin:0;height:11mm;font-size:12.5pt;line-height:5.5mm;overflow:hidden}
.oon-pr-problems{display:grid;grid-template-columns:92mm 92mm;column-gap:6mm;flex:none;height:185mm;margin-top:2mm}
.oon-pr-col{display:flex;flex-direction:column}
.oon-pr-cell{box-sizing:border-box;height:37mm;overflow:hidden;display:flex;flex-direction:column;padding-bottom:5mm}
.oon-pr-q{margin:0;height:9mm;font-size:12.5pt;line-height:9mm;white-space:nowrap;font-weight:700;overflow:hidden}
.oon-pr-work{box-sizing:border-box;height:14mm;width:89mm;border:0.35mm solid #888;border-radius:1mm;padding:0.5mm 1mm;flex:none}
.oon-pr-work-label{font-size:10pt;line-height:4mm;color:#333}
.oon-pr-ansline{margin:0;height:9mm;font-size:12.5pt;line-height:9mm;white-space:nowrap;display:flex;align-items:center;justify-content:flex-end;padding-right:3mm}
.oon-pr-anslabel{white-space:pre}
.oon-pr-paren{display:inline-flex;align-items:center;white-space:pre}
.oon-pr-box{display:inline-block;box-sizing:border-box;width:24mm;height:8mm}
.oon-pr-answers{flex:none;box-sizing:border-box;margin-top:2mm}
.oon-pr-dashed{box-sizing:content-box;display:block;height:0;margin:0 0 0.5mm;padding:0;border:0;border-top:2pt dashed #aaa}
.oon-pr-answers-title{font-weight:700;font-size:12.5pt;height:6mm;line-height:6mm}
.oon-pr-ans-grid{display:grid;grid-template-columns:92mm 92mm;column-gap:6mm}
.oon-pr-ans{box-sizing:border-box;margin:0;height:8mm;padding-right:3mm;font-size:10.2pt;line-height:4mm;overflow:hidden;overflow-wrap:anywhere}
.oon-app-pdf-page .oon-pr-page{box-shadow:none;margin:0}

#pr-sheet[data-unit="operation_order_nested2_3"]{width:190mm;max-width:none;padding:0;margin:calc(12px + 10mm) auto;background:transparent;box-shadow:none}
#pr-sheet[data-unit="operation_order_nested2_3"]>:not(#pr-problems){display:none!important}
#pr-sheet[data-unit="operation_order_nested2_3"]>#pr-problems{display:block}
/* 画面のプレビューでは、用紙の余白10mmを白い縁で見せる（印刷の寸法は変えない）。 */
#pr-sheet[data-unit="operation_order_nested2_3"] .oon-pr-page{box-shadow:0 0 0 10mm #fff,0 0 4px 10mm rgba(0,0,0,.12);margin-bottom:calc(8mm + 10mm)}
@media print{
  #page-print #pr-sheet[data-unit="operation_order_nested2_3"]{width:auto!important;max-width:none!important;margin:0!important;padding:0!important;transform:none!important;box-shadow:none!important}
  #page-print #pr-sheet[data-unit="operation_order_nested2_3"]>:not(#pr-problems){display:none!important}
  #page-print #pr-sheet[data-unit="operation_order_nested2_3"]>#pr-problems{display:block!important}
  #page-print #pr-sheet[data-unit="operation_order_nested2_3"] .oon-pr-page{display:flex!important;margin:0!important;box-shadow:none!important;break-after:auto;page-break-after:auto}
}