:root{--bg:#f4ead7;--paper:#fffdf8;--ink:#2f2924;--muted:#776b61;--line:#816c59;--accent:#e9b95e;--soft:#fff0bd;--green:#dfeee3;--red:#fde4df;--block:#4a4038}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",Meiryo,sans-serif}.app{width:min(920px,100%);margin:auto;padding:12px 10px 30px}.top{display:flex;justify-content:space-between;align-items:center;gap:8px}.back,.btn{border:2px solid var(--line);border-radius:13px;background:#fff;padding:10px 13px;font-weight:900;text-decoration:none;color:inherit;cursor:pointer}.hero,.panel{background:var(--paper);border:2px solid var(--line);border-radius:22px;padding:15px;margin-top:12px;box-shadow:0 6px 0 rgba(77,59,43,.13)}h1{margin:0;font-size:clamp(28px,7vw,43px)}.lead{color:var(--muted);line-height:1.7;margin-bottom:0}.layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.9fr);gap:12px}.panelTitle{display:flex;justify-content:space-between;align-items:center;gap:8px}.panelTitle h2{margin:0;font-size:19px}.progress{font-size:12px;font-weight:900;color:var(--muted)}.boardWrap{display:flex;justify-content:center;padding:14px 0}.board{display:grid;grid-template-columns:repeat(3,clamp(74px,22vw,120px));grid-template-rows:repeat(3,clamp(74px,22vw,120px));gap:3px;background:var(--block);padding:3px;border-radius:8px}.cell{position:relative;border:0;background:#fff;font-size:clamp(28px,8vw,48px);font-weight:900;padding:0;display:grid;place-items:center;cursor:pointer}.cell.active{background:var(--soft)}.cell.correct{background:var(--green)}.cell.wrong{background:var(--red)}.num{position:absolute;top:4px;left:5px;font-size:11px;color:#5d5148}.selected{margin-top:12px;background:#f7efe2;border:1.5px solid #bba991;border-radius:15px;padding:12px}.selectedHead{display:flex;gap:8px;align-items:center}.pill{background:var(--block);color:#fff;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:900}.selected p{color:var(--muted);line-height:1.55}.answerForm{display:grid;grid-template-columns:1fr auto;gap:7px}.answerForm input{min-width:0;border:2px solid #9f8a75;border-radius:12px;padding:11px 12px;font-size:16px;font-weight:800}.actions{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:8px}.btn.primary{background:var(--accent)}.btn.soft{background:#f7efe2}.message{min-height:20px;font-size:12px;font-weight:900}.ok{color:#397249}.ng{color:#aa483d}.clues{display:grid;grid-template-columns:1fr 1fr;gap:10px}.clueGroup h3{margin:0 0 7px}.clue{width:100%;text-align:left;border:1.5px solid #c5b49f;border-radius:12px;background:#fff;padding:9px;margin-bottom:6px;cursor:pointer;font-size:13px;line-height:1.45}.clue.active{background:var(--soft)}.clue.done{background:var(--green)}.notice{background:#fff6d7;border:1.5px solid #d7b85e;border-radius:14px;padding:10px 12px;margin-top:12px;font-size:13px;line-height:1.6}.modal{display:none;position:fixed;inset:0;background:rgba(42,34,28,.55);z-index:20;align-items:center;justify-content:center;padding:15px}.modal.open{display:flex}.modalBox{width:min(470px,100%);background:var(--paper);border:2px solid var(--line);border-radius:22px;padding:20px;text-align:center}.modalBox h2{font-size:30px;margin:0}@media(max-width:760px){.layout{grid-template-columns:1fr}}@media(max-width:480px){.app{padding-inline:6px}.hero,.panel{padding:11px}.clues{grid-template-columns:1fr}.answerForm{grid-template-columns:1fr}.actions{grid-template-columns:1fr 1fr}.actions .btn:last-child{grid-column:1/-1}}