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*{box-sizing:border-box}body{margin:0}header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px max(20px,calc((100vw - 1100px)/2));background:#fff;border-bottom:1px solid #dce5ed;flex-wrap:wrap}a{color:#1558a5}header a{text-decoration:none}.brand{font-size:24px;color:#22394b}.brand strong{color:#2869c6}.back{display:inline-flex;align-items:center;min-height:48px}main{max-width:1100px;margin:auto;padding:36px 24px 90px}h1,h2,h3{line-height:1.2}h1{font-size:clamp(30px,5vw,46px);margin:12px 0}h2{font-size:27px}.eyebrow{font-size:14px;letter-spacing:.12em;font-weight:800;text-transform:uppercase;color:#3a6495}.lead{font-size:21px;color:#52677a;max-width:720px}.hero{display:flex;justify-content:space-between;gap:30px;align-items:center}.mascot{font-size:85px;background:#e4edfc;padding:15px 30px;border-radius:32px;transform:rotate(-5deg)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:24px 0}.tile,.panel{background:white;border:2px solid #dce6f0;border-radius:22px;padding:24px}.tile{text-align:left;color:#22394b;min-height:166px;box-shadow:0 5px 0 #dce6f0}.tile strong,.tile span{display:block}.tile .icon{font-size:36px;margin-bottom:12px}.tile strong{font-size:23px}.tile small{font-size:16px;color:#52677a;display:block;margin-top:7px}button,input,textarea{font:inherit}button{min-height:64px;padding:12px 22px;border:2px solid transparent;border-radius:15px;background:#2869c6;color:white;font-weight:750;cursor:pointer;touch-action:manipulation}button:hover{filter:brightness(.95)}button:disabled{opacity:.6;cursor:default}button.quiet,.secondary{background:#e7effb;color:#244e83}button[aria-pressed=true]{border-color:#2869c6;background:#e0edff;color:#174b94;box-shadow:0 0 0 3px #bcd5f5}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:18px 0}.grades{grid-template-columns:repeat(auto-fit,minmax(125px,1fr))}.grades button{background:white;color:#29455e;border-color:#dce6f0}.pill{display:inline-block;background:#e7effb;color:#244e83;padding:6px 14px;border-radius:50px;font-size:15px;font-weight:700}.muted{color:#52677a}label{display:block;font-weight:750;margin-bottom:8px}input,textarea{display:block;width:100%;border:2px solid #b9cbdc;border-radius:13px;padding:14px;min-height:56px;color:#22394b;background:white}textarea{min-height:160px;resize:vertical}small{font-size:15px}form{margin:20px 0}form .row{margin-top:12px}.section-top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.list{display:grid;gap:12px}.work-item{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:18px;border-radius:16px;background:#f2f6fb}.lesson{max-width:800px;margin:auto}.teach{font-size:23px;background:#edf5ff;border-left:6px solid #2869c6;padding:24px;border-radius:12px}.question{font-size:clamp(23px,4vw,32px)}.choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.choices button{background:white;color:#244e83;border:2px solid #b9cbdc;min-height:80px;text-align:left}.feedback{padding:18px;background:#e6f4ee;color:#184c36;border-radius:14px}.feedback.retry{background:#fff2d7;color:#644a13}progress{width:100%;height:18px;accent-color:#2869c6}.result-mark{font-size:74px;font-weight:850;color:#2869c6}.result{display:grid;grid-template-columns:1fr 1fr;gap:18px;text-align:center}.badge{padding:16px;background:#fff5d6;border-radius:18px;border:2px solid #eed58a}.locked{background:#f2f5f8;color:#637589;border-color:#dce6f0}.badge .icon{font-size:34px}.source{font-size:14px;color:#52677a}details{margin-top:20px}summary{cursor:pointer;min-height:48px;padding:12px}#notice{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#22394b;color:white;border-radius:12px;max-width:90vw;z-index:100;margin:0;padding:0}#notice:not(:empty){padding:12px 20px}footer{text-align:center;font:11px monospace;padding:12px;color:#667c8e}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:4px solid #e7a51e;outline-offset:4px}.word{font-size:40px;letter-spacing:.1em}main:focus{outline:none}@media(max-width:600px){main{padding:24px 16px 90px}header{padding:12px 16px;gap:8px}.brand{font-size:21px}.mascot{display:none}.grid{gap:12px}.result{grid-template-columns:1fr}.tile{min-height:150px}.choices{grid-template-columns:1fr}}
:root .voice-input{align-items:flex-start;margin:12px 0 18px}.voice-input p{flex:1;min-width:200px;font-size:16px;margin:10px 0}.voice-help{font-size:15px;max-width:800px;margin:28px auto 0}.voice-input button[aria-pressed=true]{background:#8b2536;color:#fff;border-color:#8b2536}
