:root{color-scheme:light;--ink:#153638;--teal:#087d75;--mint:#e8f5ed;--line:#d9e5df;--paper:#f6f8f3;--muted:#526a66;--gold:#e7ad45}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.75 system-ui,-apple-system,"Noto Sans JP",sans-serif}header,main,footer,.dev,#notice{max-width:1140px;margin:auto}header{display:flex;justify-content:space-between;align-items:center;padding:24px 28px;gap:20px}.brand{display:flex;align-items:center;gap:12px;font-weight:750;font-size:18px}.brand small{display:block;font-size:11px;letter-spacing:.12em;font-weight:500}.brandmark{background:var(--teal);color:white;border-radius:14px;padding:5px 14px;font-size:26px}nav{display:flex;gap:8px;flex-wrap:wrap}button,.btn{font:inherit;cursor:pointer;border:1px solid var(--line);border-radius:10px;padding:10px 20px;min-height:46px;background:white;color:var(--ink);text-decoration:none;display:inline-block}button:hover,.btn:hover{border-color:var(--teal);background:var(--mint)}button:disabled{opacity:.55;cursor:not-allowed}button.primary,.primary{background:var(--teal);color:white;border-color:var(--teal)}button[aria-pressed=true],.chosen{border:2px solid var(--teal);background:var(--mint)}:focus-visible{outline:3px solid #d18700;outline-offset:4px}main{padding:20px 28px 60px;min-height:60vh}h1{font-size:clamp(27px,3.5vw,43px);line-height:1.4;letter-spacing:.02em;margin:12px 0 20px}h2{font-size:23px;line-height:1.45}h3{font-size:18px}p{margin:.5em 0 1em}.eyebrow{color:var(--teal);font-size:13px;font-weight:750;letter-spacing:.13em}.hero{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;background:#e9f1e7;border-radius:24px;padding:36px;margin-bottom:30px}.hero p{color:var(--muted)}.daily{border-radius:18px;padding:26px;background:white;border:1px solid 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10px;border-radius:20px;font-size:12px;background:var(--mint);color:#255e51;margin-right:5px}.warn,.dev{background:#fff3d7;color:#66470a;border:1px solid #e9c777;padding:12px 20px;border-radius:10px;font-size:14px}.dev{margin:0 auto 10px}.warn{margin:16px 0}.question{max-width:880px;margin:auto}.question img{display:block;width:100%;height:auto;background:white}.question figure{margin:12px 0;padding:4px;background:white;border:1px solid var(--line);border-radius:8px;overflow:auto}.question figure a{display:block}.question figcaption{padding:8px;font-size:13px;color:var(--muted)}details{margin:12px 0;border:1px solid var(--line);padding:12px;border-radius:10px}summary{cursor:pointer;min-height:44px}pre.transcript{white-space:pre-wrap;overflow-wrap:anywhere;font:16px/1.8 system-ui,sans-serif}.answers{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:20px 0}.answers button{font-size:22px;font-weight:bold}.progress{height:8px;background:#dfebe5;border-radius:5px;overflow:hidden}.progress span{display:block;height:100%;background:var(--teal)}.correct{color:#17694a}.incorrect{color:#a12c27}.result{border-left:5px solid var(--teal);padding:12px 20px;background:var(--mint);margin:18px 0}.archive-list{display:grid;gap:8px}.archive-list button{text-align:left}a{color:#076d67;text-underline-offset:3px}footer{border-top:1px solid var(--line);padding:30px 28px;font-size:13px;color:var(--muted)}#notice:empty{display:none}#notice{padding:10px 28px;color:#824a00}.skip{position:absolute;top:-100px;background:white;padding:10px}.skip:focus{top:0}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:9px;text-align:left;border-bottom:1px solid var(--line)}.tablewrap{overflow:auto}.check{display:flex;align-items:flex-start;gap:9px}.check input{width:22px;height:22px;flex-shrink:0}.fileactions{margin:20px 0}.quiet{border:0;background:transparent;padding:8px 12px}.separator{border:0;border-top:1px solid var(--line);margin:28px 0}.small{font-size:14px}.wide{width:100%} @media(max-width:760px){header{align-items:flex-start;padding:16px;flex-direction:column;gap:12px}nav{width:100%;gap:5px}nav button{flex:1;padding:8px;font-size:14px}main{padding:12px 16px 35px}.hero{grid-template-columns:1fr;padding:24px;gap:20px;border-radius:16px}.grid{grid-template-columns:1fr}.fields{grid-template-columns:1fr}.dev{border-radius:0}.card,.panel{padding:18px}.answers{gap:7px}.answers button{padding:8px}.daily{padding:20px}.row>button{max-width:100%}h1{font-size:29px}.brand{font-size:16px}}@media(prefers-reduced-motion:no-preference){button{transition:background .12s,border .12s}}@media print{header,nav,footer,.dev,button{display:none}}

@media(max-width:400px){.hero{padding:18px}.daily{padding:16px}.daily .big{font-size:30px}h1{font-size:27px}}

.answers.hastext{grid-template-columns:1fr}.answers.hastext button{font-size:17px;font-weight:400;text-align:left;line-height:1.7}.official-text{margin:24px 0}.official-text .transcript{font-size:18px;line-height:1.9}

textarea{font:16px/1.6 ui-monospace,monospace;width:100%;max-width:100%;min-height:140px;border:1px solid #b3c7bd;border-radius:8px;padding:12px;margin:8px 0 12px;resize:vertical}

.explain{white-space:pre-line}