/* 平方根だけの資材。共通ヘッダーや他単元にはスタイルを適用しない。 */
body{margin:0;background:#fffdf7;color:#161616;font-family:"BIZ UDPGothic","Hiragino Sans",Meiryo,sans-serif;font-size:18px;line-height:1.8}body *{box-sizing:border-box}.skip-link{position:absolute;left:16px;top:-100px;background:#fff;padding:10px 18px;color:#1f4e79;z-index:100}.skip-link:focus{top:8px}.breadcrumb{max-width:1060px;margin:20px auto 0;padding:0 24px;font-size:16px}.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}.breadcrumb li+li:before{content:'›';margin-right:8px;color:#555}.breadcrumb a{color:#1f4e79}
.sq-main{max-width:1060px;margin:auto;padding:30px 24px 64px;font-family:"BIZ UDPGothic","Hiragino Sans",Meiryo,sans-serif;font-size:18px;line-height:1.9;color:#161616}
.sq-main *{box-sizing:border-box}.sq-main h1{font-size:clamp(30px,5vw,46px);line-height:1.35;margin:12px 0 24px}.sq-main h2{font-size:25px;line-height:1.5;margin:0 0 16px;color:#1f4e79}.sq-main h3{font-size:20px}.sq-main p{margin:12px 0}.sq-main section{margin:32px 0}.sq-main a{color:#1f4e79;text-underline-offset:4px}.sq-main a:hover{text-decoration-thickness:3px}.sq-main :is(button,a,summary,textarea,select,input):focus-visible{outline:3px solid #1f4e79;outline-offset:4px}.sq-main button,.sq-main select,.sq-main textarea{font:inherit;color:inherit}.sq-main button{min-height:48px;padding:10px 18px;border:2px solid #161616;border-radius:10px;background:white;cursor:pointer}.sq-main button:hover,.sq-main button[aria-pressed="true"]{background:#ffe14d}.sq-main button[aria-pressed="true"]{box-shadow:3px 3px 0 #161616}.sq-main summary{font-weight:700;min-height:48px;padding:14px 18px;cursor:pointer}.sq-main details{border:2px solid #161616;border-radius:12px;overflow:hidden;margin:18px 0;background:white}.sq-main details>p,.sq-solution-content{padding:0 20px 20px}.sq-main details[open]>summary{border-bottom:1px solid #ccc}.sq-kicker,.sq-level{font-size:16px;font-weight:700;color:#1f4e79}.sq-main .sq-hero{display:grid;grid-template-columns:1.45fr 1fr;gap:30px;background:#fff4b8;border:3px solid #161616;border-radius:24px;padding:36px;box-shadow:7px 7px 0 #161616;margin:0 7px 40px 0}.sq-lead{font-size:clamp(24px,3.3vw,34px);font-weight:800;line-height:1.6}.sq-lead-small{font-size:22px}.sq-cover{background:#fffef5;border-radius:18px;padding:28px 16px;align-self:center;text-align:center;border:2px solid #161616}.sq-square{width:150px;height:150px;display:grid;place-items:center;margin:auto;background:#d9eaf4;border:3px solid #1f4e79;transform:rotate(-4deg);font-size:21px}.sq-square span{transform:rotate(4deg)}.sq-cover-note{font-size:16px}.sq-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.sq-main .sq-primary,.sq-main .sq-secondary{display:inline-flex;align-items:center;min-height:48px;padding:12px 18px;border:2px solid #161616;border-radius:10px;text-decoration:none;font-weight:700}.sq-main .sq-primary{background:#1f4e79;color:white}.sq-secondary{background:white}.sq-guide{display:flex;align-items:center;gap:18px;padding:18px 22px;background:#f4f8fc;border-left:5px solid #1f4e79}.sq-guide img{flex:none}.sq-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-left:24px}.sq-steps li{padding:8px}.sq-chapters{padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:20px}.sq-main .sq-chapter-card{height:100%;display:flex;gap:16px;align-items:center;padding:22px 18px;border:2px solid #161616;border-radius:14px;text-decoration:none;background:white;box-shadow:3px 3px 0 #161616}.sq-chapter-card:hover{background:#fff4b8}.sq-number{align-self:flex-start;font-size:22px;font-weight:800;border-bottom:4px solid #ffe14d}.sq-chapter-card strong{display:block;font-size:20px}.sq-chapter-card span span{display:block;font-size:16px;color:#333}.sq-chapter-card b{margin-left:auto}.sq-predict,.sq-lab,.sq-example,.sq-bottom,.sq-reflect{padding:26px;border:2px solid #161616;border-radius:16px;background:#fff9d7}.sq-example{background:#f0f6fb}.sq-caution{padding:22px;border-left:5px solid #9c5e00;background:#fff4df;margin:30px 0}.sq-caution h2{color:#795100}.sq-points li{padding:8px 0}.sq-problem-list{padding-left:28px}.sq-problem-list li{padding:20px 12px;border-bottom:1px solid #b4c2cf}.sq-problem-list a{font-weight:700}.sq-q-preview{display:block;font-size:18px;font-weight:400;color:#222;margin-top:6px}.sq-problem-list [data-status]{display:inline-block;margin-top:8px;font-size:16px;color:#505050}.sq-main .sq-statement{font-size:24px;font-weight:700;padding:26px;background:#fff4b8;border:2px solid #161616;border-radius:14px;line-height:1.8}.sq-answer-label{display:block;font-weight:700;margin:24px 0 10px}.sq-main textarea{width:100%;border:2px solid #8095a6;border-radius:12px;padding:14px;resize:vertical;min-height:140px;background:#fff}.sq-main textarea::placeholder{font-size:16px;color:#555}.sq-hint{background:#f5f7f9!important}.sq-solution>summary{background:#fff4b8}.sq-main .sq-answer{font-size:25px;color:#1f4e79;font-weight:800}.sq-solution li{margin:12px 0}.sq-reflect{background:#f5f8fa}.sq-reflect p{font-size:16px}.sq-saved{min-height:1.8em;font-weight:700}.sq-next{display:flex;gap:20px;justify-content:space-between;flex-wrap:wrap;border-top:2px solid #161616;padding:24px 0;margin-top:30px}.sq-next a{padding:8px 0;min-height:44px}.sq-main select{display:block;padding:12px;border:2px solid #161616;border-radius:8px;background:white;min-height:48px}.sq-check{padding-left:28px}.sq-check li{padding:24px 8px;border-bottom:1px solid #b4c2cf}.sq-sheet article{break-inside:avoid}.sq-writing-space{height:100px;border-bottom:1px dashed #aaa}.sq-print-solutions article{border-bottom:1px solid #ddd;padding:12px 0;break-inside:avoid}.sq-no-print label{display:block;margin:20px 0}.sq-no-print input{width:22px;height:22px;vertical-align:middle}.sq-questions-only .sq-print-solutions{display:none}.sq-main blockquote{border-left:3px solid #1f4e79;padding-left:18px}
@media(max-width:700px){.sq-main{padding:22px 16px 48px}.sq-main .sq-hero{grid-template-columns:1fr;padding:24px 18px;gap:16px}.sq-cover{display:none}.sq-chapters,.sq-steps{grid-template-columns:1fr}.sq-guide{padding:14px;gap:12px}.sq-guide img{width:52px;height:52px}.sq-predict,.sq-lab,.sq-example,.sq-reflect{padding:20px 16px}.sq-main .sq-statement{font-size:22px;padding:20px 16px}.sq-main .sq-answer{font-size:23px;overflow-wrap:anywhere}.sq-main h2{font-size:23px}}
@media print{body[data-page="worksheet"]>header,body[data-page="worksheet"]>nav,body[data-page="worksheet"]>footer,body[data-page="worksheet"]>section,.breadcrumb,.skip-link,.sq-no-print{display:none!important}.sq-main{max-width:none;padding:0;font-size:11pt;line-height:1.6}.sq-main h1{font-size:22pt}.sq-main h2{font-size:16pt}.sq-main h3{font-size:12pt}.sq-main .sq-kicker{font-size:11pt}.sq-sheet{break-before:page;margin:0!important}.sq-sheet h2{margin-bottom:12px}.sq-sheet article{margin:10px 0}.sq-sheet h3{margin-bottom:3px}.sq-sheet p{margin:3px 0}.sq-writing-space{height:45px}.sq-print-solutions{break-before:page}.sq-print-solutions article{padding:5px 0}.sq-main a{color:black}body{background:white!important}@page{size:A4;margin:15mm}}