:root{font-family:system-ui,-apple-system,"Malgun Gothic",sans-serif;color:#192b36;background:#f5f7f9;font-synthesis:none}*{box-sizing:border-box}body{margin:0}header{background:#122f3b;color:#fff;padding:26px max(24px,calc((100vw - 1500px)/2));display:flex;justify-content:space-between;align-items:center;gap:24px}h1{margin:6px 0;font-size:28px}header p{margin:0;color:#c9dbe2}.eyebrow{font-size:12px;letter-spacing:.04em}.status{display:grid;gap:8px;text-align:right;font-size:13px}.status strong{font-size:24px;color:#8febc6}.identity{padding:13px 24px;background:#fff;border-bottom:1px solid #d9e2e7;display:flex;gap:20px;align-items:center;flex-wrap:wrap}.identity input{padding:8px;border:1px solid #bdcbd2;border-radius:5px;font:inherit}.identity span{color:#526673;font-size:13px}.identity button{margin-left:auto}main{display:flex;max-width:1550px;margin:auto;min-height:75vh}aside{width:235px;flex-shrink:0;padding:22px 15px;border-right:1px solid #d9e2e7}aside h2{font-size:15px;margin:0 0 14px}nav{display:grid;gap:5px}nav button{text-align:left;width:100%;font-size:12px;line-height:1.6;padding:9px;background:transparent;border:1px solid transparent}nav button.active{background:#fff;border-color:#9dabb6;font-weight:700}nav button.solved{color:#11724e}.aside-note{font-size:12px;color:#607481;line-height:1.8;margin-top:24px}.workspace{padding:25px;min-width:0;flex:1}.heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:15px}.heading h2{font-size:25px;margin:6px 0}#level{font-size:12px;background:#e3ecef;padding:6px 10px;white-space:nowrap}.columns{display:grid;grid-template-columns:minmax(270px,.9fr) minmax(340px,1.15fr);gap:28px}article{font-size:14px;line-height:1.85}article h3{font-size:15px;margin:0 0 8px}#statement{white-space:pre-wrap;margin-top:0}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#eaf0f3;padding:12px;border-radius:4px;font:12px/1.8 Consolas,monospace}details{border-top:1px solid #cdd8df;margin-top:18px;padding-top:12px}summary{cursor:pointer;font-weight:600}.notice{background:#eaf5ee;padding:12px;font-size:12px}.editor-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;margin-bottom:8px}#code{display:block;width:100%;min-height:340px;height:43vh;resize:vertical;background:#102733;color:#e4f1f7;border:1px solid #153e50;border-radius:6px;padding:18px;font:14px/1.8 Consolas,"Courier New",monospace;tab-size:4;outline-offset:2px}button{cursor:pointer;border:1px solid #bfced5;background:#fff;color:#213b47;padding:9px 13px;border-radius:5px;font:inherit;font-size:13px}button:hover:not(:disabled){background:#e8f2f2}button:disabled{opacity:.5;cursor:wait}.primary{background:#087c60;color:#fff;border-color:#087c60;font-weight:700}.primary:hover:not(:disabled){background:#08654f}.actions{display:flex;gap:8px;margin:12px 0}.options{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:11px;color:#526673}.options input{vertical-align:middle}#result{margin-top:16px;padding:14px;background:#e9eef2;border-left:4px solid #91a6b3;white-space:pre-wrap;font-size:13px;line-height:1.7}#result.success{background:#e2f5e9;border-color:#198858}#result.error{background:#fff1eb;border-color:#c7613f}#case-results{font:12px/1.7 Consolas,"Malgun Gothic",monospace;max-height:260px;overflow:auto}#case-results p{padding:8px 10px;margin:4px 0;background:#fff;white-space:pre-wrap;overflow-wrap:anywhere}#next{margin-top:12px}footer{padding:18px 25px;text-align:center;font-size:12px;color:#607481;border-top:1px solid #d9e2e7;line-height:1.8}a{color:inherit}body.busy #code{opacity:.8}@media(max-width:1050px){.columns{grid-template-columns:1fr}#code{height:340px}aside{width:200px}.workspace{padding:18px}}@media(max-width:650px){header{padding:20px;align-items:flex-start}h1{font-size:22px}.status{font-size:11px}.status strong{font-size:18px}.identity{padding:12px;gap:8px}.identity button{margin-left:0}main{display:block}aside{width:auto;padding:12px;border-right:0;border-bottom:1px solid #ddd}nav{grid-template-columns:repeat(3,1fr);gap:2px}nav button{font-size:10px;padding:6px}.aside-note,aside h2{display:none}.heading h2{font-size:22px}.workspace{padding:16px}.columns{gap:18px}.options span{display:none}}

.status strong{white-space:nowrap}nav button{word-break:keep-all}
.identity select{padding:8px 12px;border:1px solid #087c60;border-radius:5px;background:#f0faf5;color:#153c30;font:inherit;font-weight:700}.identity label{display:flex;align-items:center;gap:8px}#instructions{white-space:pre-line}#engine{max-width:280px}#repair-note[hidden]{display:none}
.coding{min-width:0}.indent-toolbar{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:8px}.indent-toolbar button{font-size:11px;padding:6px 8px}.editor-help{display:flex;justify-content:space-between;gap:8px;margin-top:7px;color:#526673;font-size:11px;line-height:1.7}#cursor-position{white-space:nowrap}.CodeMirror{height:43vh;min-height:340px;border:1px solid #153e50;border-radius:6px;font:14px/1.8 Consolas,"Courier New",monospace}.cm-s-dju.CodeMirror{background:#102733;color:#e4f1f7}.cm-s-dju .CodeMirror-gutters{background:#102733;border-right:1px solid #36515f}.cm-s-dju .CodeMirror-linenumber{color:#9ab2bf}.cm-s-dju .CodeMirror-cursor{border-left:2px solid #fff}.cm-s-dju .CodeMirror-selected{background:#365569}.cm-s-dju.CodeMirror-focused .CodeMirror-selected{background:#365569}.cm-s-dju .CodeMirror-activeline-background{background:#173442}.cm-s-dju .cm-keyword{color:#dbacff}.cm-s-dju .cm-def,.cm-s-dju .cm-builtin{color:#80dcff}.cm-s-dju .cm-number{color:#ffd38b}.cm-s-dju .cm-string,.cm-s-dju .cm-string-2{color:#a7e3ac}.cm-s-dju .cm-comment{color:#a1b9c6}.cm-s-dju .cm-meta{color:#ffd38b}.cm-s-dju .cm-error{color:#ffb2ac;text-decoration:underline wavy}.cm-s-dju .CodeMirror-matchingbracket{color:#fff!important;background:#347459}.cm-s-dju .CodeMirror-nonmatchingbracket{color:#ffaaa0!important}body.busy .CodeMirror{opacity:.8}@media(max-width:1050px){.CodeMirror{height:340px}}