body{margin:0;font:16px system-ui;background:#f5f8fc;color:#17243a}header{background:white;border-bottom:1px solid #dce5ef;padding:18px 5%;display:flex;justify-content:space-between;align-items:center}main{max-width:1000px;margin:30px auto;padding:0 18px}.card{background:white;border:1px solid #dae5ef;border-radius:18px;padding:25px;margin-bottom:18px;box-shadow:0 8px 30px #15345a09}h1{margin:0;font-size:26px}h2{margin-top:0}label{display:block;margin:12px 0 5px;font-weight:600}select,button{font:inherit;border-radius:10px;padding:12px;border:1px solid #b8c9db}select{width:100%;background:white}button{cursor:pointer;background:#155fc0;color:white;border:0;margin:5px 6px 5px 0}button:disabled{opacity:.5;cursor:default}.secondary{background:#eaf1fb;color:#164679}.answer{display:block;width:100%;text-align:left;background:#f3f7fc;color:#17243a;border:1px solid #cddbeb;margin:10px 0}.answer.correct{background:#dff6e8;border-color:#4caf76}.answer.wrong{background:#ffebeb;border-color:#df7272}.muted{color:#52667f}.stats{display:flex;gap:20px;flex-wrap:wrap;font-weight:600}.hidden{display:none}.passage{padding:16px;background:#f3f7fc;border-left:4px solid #2779ce;border-radius:6px;line-height:1.6}.feedback{padding:14px;background:#f1f6fc;border-radius:10px;margin-top:12px}a{color:#155fc0}footer{font-size:12px;color:#66788e;text-align:center;margin:30px}
*{box-sizing:border-box}header{gap:16px;flex-wrap:wrap}header a{font-size:14px}h2{line-height:1.5}.answer{line-height:1.5}.feedback{line-height:1.6}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #7eace8;outline-offset:3px}#roundinfo{font-size:14px}#history p{padding:16px 0;border-bottom:1px solid #e3eaf3;line-height:1.6}@media(max-width:600px){main{margin:20px auto;padding:0 12px}.card{padding:18px}h1{font-size:24px}h2{font-size:21px}.stats{gap:12px;font-size:14px}header{padding:16px}}