:root{font-family:Segoe UI,system-ui,sans-serif;color:#16324f;background:#dff3ff;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 15% 10%,#fff 0 4%,transparent 5%),linear-gradient(180deg,#ccecff 0,#ccecff 46%,#f5d98b 46%,#f5d98b 52%,#8fc66d 52%)}button,input{font:inherit}button{min-height:48px}button:focus-visible,input:focus-visible{outline:4px solid #ffbf47;outline-offset:3px}main{width:min(900px,calc(100% - 28px));margin:auto;min-height:100vh;display:flex;flex-direction:column;font-size:19px}main.large{font-size:23px}header{display:flex;align-items:center;justify-content:space-between;padding:20px 2px 12px}.brand{font-weight:900;font-size:1.35rem}.card{background:#fffdf6;border:3px solid #16324f;border-radius:28px;box-shadow:0 10px #16324f22;padding:clamp(24px,6vw,58px);margin:22px auto;width:100%;min-height:620px;display:flex;flex-direction:column;align-items:center;text-align:center;justify-content:center;gap:20px}h1{font-size:clamp(2rem,6vw,4rem);line-height:1.05;margin:0;max-width:760px}h2{margin:.25rem 0}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78em;font-weight:800;color:#ad3f28;margin:0}.scene{width:100%;min-height:170px;border-radius:24px;background:linear-gradient(#bce5fa 70%,#69a84f 70%);display:flex;justify-content:space-around;align-items:center;font-size:4rem}.scene .train{font-size:7rem}.lesson,.passage{font-size:1.2em;line-height:1.65;max-width:700px}.passage{text-align:left;background:#fff;border:2px solid #b8c8d3;border-radius:18px;padding:18px 28px}.passage p{margin:.3em}.blend{display:flex;align-items:center;gap:8px;font-size:2.4rem;font-weight:800}.blend span{padding:10px 14px;background:#eaf2f7;border-radius:12px}.blend .target,mark{background:#ffe27a;color:#16324f}.blend b{font-size:.65em;margin-left:18px}.choices{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}.choices button{font-size:1.12em;padding:10px 24px;border:2px solid #16324f}.feedback{min-height:52px;background:#eaf7e6;border-left:6px solid #4f8b3a;border-radius:8px;padding:13px 18px;max-width:650px}.reward{font-size:5rem}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;width:100%}.stats div{background:#eaf2f7;border-radius:16px;padding:20px;display:flex;flex-direction:column}.stats b{font-size:2rem}.stats span{font-size:.8em}label{display:grid;gap:8px;font-weight:700;max-width:360px;width:100%}footer{text-align:center;padding:14px 4px 24px;font-size:.75em;color:#29475f}@media(max-width:600px){main{width:min(100% - 16px,900px)}header{padding-inline:4px}.card{min-height:calc(100vh - 140px);padding:25px 18px;border-radius:20px}.scene{min-height:130px}.scene .train{font-size:4.5rem}.stats{grid-template-columns:1fr}.blend{font-size:1.7rem}.blend b{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}