@charset "UTF-8";
:root{font-family:Inter,"Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;color:#18343d;background:#f5f8f8;font-synthesis:none;line-height:1.7;--mint:#a3ebc9;--ink:#18343d;--muted:#61767c;--line:#dbe5e5}
*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid #25836d;outline-offset:5px}h1:focus{outline:none}button{color:inherit}a{color:inherit;text-decoration:none}.header{max-width:1200px;margin:auto;min-height:100px;display:flex;align-items:center;justify-content:space-between;padding:20px 32px;border-bottom:1px solid var(--line)}.brand{font-size:20px;font-weight:800;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.brand-icon{display:grid;place-items:center;background:var(--ink);color:var(--mint);width:38px;height:38px;border-radius:12px;font-size:27px}.brand-en{font-size:10px;letter-spacing:1.8px;margin-left:8px;color:var(--muted)}.header-note{font-size:13px;color:var(--muted)}main{max-width:1100px;margin:0 auto;padding:0 32px}.intro{padding:64px 0 48px;position:relative}.eyebrow{font-size:12px;font-weight:800;letter-spacing:2px;color:#39806e}.intro h1{font-size:clamp(32px,4.5vw,54px);line-height:1.5;letter-spacing:.04em;margin:17px 0 20px}.intro p{color:var(--muted);font-size:16px;line-height:1.9}.intro-tags{display:flex;gap:12px;margin-top:24px}.intro-tags span{font-size:12px;border:1px solid var(--line);border-radius:30px;padding:5px 14px;background:white}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.section-heading h2{font-size:18px;margin:0}.section-heading>span{font-size:10px;letter-spacing:2px;color:var(--muted)}.level-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.level-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px 24px 0;transition:transform .18s,border-color .18s,box-shadow .18s;overflow:hidden}.level-card:hover{transform:translateY(-5px);border-color:#4b9b84;box-shadow:0 12px 30px #18343d0c}.card-top{display:flex;align-items:center;justify-content:space-between}.level-symbol{font-size:30px;line-height:1;background:#e8f6ef;border-radius:12px;width:49px;height:49px;display:grid;place-items:center}.level-card:nth-child(2) .level-symbol{background:#edf2fb}.level-card:nth-child(3) .level-symbol{background:#fcf3df}.level-card h3{font-size:18px;margin:25px 0 10px}.level-card p{font-size:14px;color:var(--muted);min-height:48px;margin:0 0 19px}.level-hint{font-size:12px;color:#477668;display:block;margin-bottom:24px}.card-bottom{border-top:1px solid var(--line);padding:17px 0;display:flex;justify-content:space-between;font-size:14px;font-weight:bold}.card-bottom>span{font-size:20px}.guide{display:flex;gap:20px;background:#eaf0f0;padding:24px 28px;border-radius:14px;margin:30px 0 50px}.guide-icon{font-family:Georgia,serif;font-style:italic;font-size:28px;width:40px;flex-shrink:0}.guide h2{font-size:14px;margin:0 0 5px}.guide p{font-size:13px;color:var(--muted);margin:0}footer{max-width:1136px;border-top:1px solid var(--line);margin:0 auto;padding:25px 18px;display:flex;justify-content:space-between;color:var(--muted);font-size:11px;letter-spacing:1px}.quest-top{max-width:760px;margin:26px auto 20px;display:flex;justify-content:space-between;align-items:center}.text-button{background:none;border:none;padding:10px 0;font-size:14px;color:var(--muted);min-height:44px}.level-pill{font-size:12px;letter-spacing:1.5px;background:#e3eee9;color:#326c59;padding:5px 13px;border-radius:30px;font-weight:bold}.quest{max-width:760px;margin:auto;background:white;border:1px solid var(--line);border-radius:24px;padding:28px 36px 32px;box-shadow:0 8px 32px #18343d04}.quest-status{display:flex;align-items:center;justify-content:space-between}.quest-status strong{font-size:26px;margin-left:10px}.muted,.score{color:var(--muted);font-size:13px}.score strong{font-size:23px;color:var(--ink)}.score span{font-size:12px}.progress{display:flex;gap:6px;margin:17px 0 27px}.progress span{height:5px;flex:1;background:#eaf0ef;border-radius:3px}.progress .done{background:#418e77}.progress .current{background:#a3ebc9}.question-heading{text-align:center}.question-heading h1{font-size:22px;margin:0 0 7px;line-height:1.6}.question-heading p{font-size:13px;color:var(--muted);margin:0 0 20px}.plot{background:#fafcfc;border:1px solid #eaf0ef;border-radius:14px;padding:10px 15px}.plot svg{width:100%;height:auto;display:block}.answer-label{display:flex;justify-content:space-between;margin:24px 0 12px;font-size:14px;font-weight:bold}.answer-label span+span{font-size:12px;font-weight:normal;color:var(--muted)}.answers{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.answer{min-height:67px;border:1.5px solid var(--line);background:white;border-radius:12px;display:flex;align-items:center;justify-content:center;gap:9px;font-size:19px;font-weight:600;position:relative}.answer-letter{font-size:11px;color:#7a8a8e;font-weight:normal}.answer:hover:not(:disabled){border-color:#388a71;background:#f1faf6}.answer:disabled{cursor:default;opacity:1}.answer.correct{background:#e2f6ea;border-color:#389671;color:#236d50}.answer.incorrect{background:#fff1eb;border-color:#d9987e}.answer-mark:not(:empty){position:absolute;bottom:-9px;right:8px;background:#fff;padding:0 4px;font-size:11px}.feedback{border:1px solid #c9e9d6;background:#f0faf4;border-radius:12px;padding:20px;margin-top:24px}.feedback.miss{background:#f8f9fb;border-color:#dce3eb}.feedback-top{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap}.feedback-top strong{font-size:15px;color:#276d51}.feedback-top span{font-size:12px;color:var(--muted)}.feedback p{font-size:14px;margin:10px 0 0}.feedback .actual{font-size:15px}.actual strong{font-size:22px}.primary{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;background:var(--ink);border:none;border-radius:12px;padding:17px 23px;color:white;font-weight:bold;margin-top:18px;min-height:58px}.primary:hover{background:#26505a}.primary span{color:var(--mint);font-size:22px}.quest-note{text-align:center;color:var(--muted);font-size:12px;margin:22px 0 35px}.mobile{display:none}.result{max-width:650px;margin:45px auto;text-align:center;background:white;border:1px solid var(--line);border-radius:24px;padding:35px 48px}.result-star{display:block;font-size:62px;line-height:1.3;color:#3e9679}.result h1{font-size:30px;margin:16px 0 8px}.result>p{color:var(--muted);font-size:14px}.result-score{margin-top:20px}.result-score strong{font-size:86px;line-height:1.3;letter-spacing:-4px}.result-score span{font-size:16px;color:var(--muted)}.accuracy{font-size:14px}.accuracy strong{margin-left:10px;font-size:20px;color:#338565}.rank{background:#edf7f1;border-radius:12px;margin:25px 0;padding:22px}.rank>span{font-size:12px;color:#568071}.rank h2{font-size:22px;margin:5px 0}.rank p{font-size:14px;margin:0;color:var(--muted)}.result>.text-button{margin-top:13px}.causality{border-top:1px solid var(--line);padding-top:22px;margin-top:25px;font-size:13px;color:var(--muted)}.causality p{margin:7px 0 0}
@media(min-width:1000px){.intro:after{content:'r';position:absolute;right:70px;top:45px;font-family:Georgia,serif;font-style:italic;font-size:210px;line-height:1;color:#d6e9e2;transform:rotate(-12deg)}}
@media(max-width:800px){.header-note,.brand-en{display:none}.header{min-height:78px;padding:16px 24px}.level-grid{gap:12px}.level-card{padding:20px 17px 0}.level-card h3{font-size:16px}.level-card p{min-height:70px}.section-heading>span{display:none}.quest{padding:25px}.answers{grid-template-columns:repeat(2,1fr)}.intro{padding-top:40px}}
@media(max-width:560px){main{padding:0 18px}.header{padding:16px 18px}.brand{font-size:17px;gap:9px}.brand-icon{width:33px;height:33px;font-size:23px}.intro{padding:34px 0}.intro h1{font-size:34px}.intro p{font-size:14px}.desktop{display:none}.level-grid{grid-template-columns:1fr}.level-card{padding:20px 22px 0}.level-card h3{margin:10px 0;font-size:18px}.level-card p{min-height:0}.level-hint{margin-bottom:18px}.level-symbol{width:42px;height:42px}.guide{padding:20px;gap:12px}.guide p br{display:none}footer{margin:0 18px;padding:20px 0;font-size:10px}footer span{display:none}.quest-top{margin:15px 0 12px}.quest{padding:21px 15px;border-radius:18px}.quest-status .eyebrow{font-size:10px}.quest-status strong{font-size:23px}.question-heading h1{font-size:19px}.mobile{display:initial}.plot{padding:6px 0}.plot svg{min-height:205px}.answer{min-height:65px;font-size:21px}.feedback{padding:16px}.feedback-top{gap:5px}.actual strong{font-size:20px}.quest-note{font-size:11px}.result{margin:25px 0;padding:28px 20px}.result h1{font-size:27px}.result-score strong{font-size:76px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}