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var(--line);color:var(--ink);background:#fffefa;border-radius:22px;padding:26px;text-decoration:none;transition:transform .18s,box-shadow .18s,border-color .18s;display:block}.class-tile:hover,.activity-tile:hover{border-color:var(--teal);transform:translateY(-4px);box-shadow:0 14px 28px #173b4012}.tile-top{justify-content:space-between;align-items:center;gap:10px;margin-bottom:25px;display:flex}.subject-icon{background:#e6edcb;border-radius:16px;place-items:center;width:52px;height:52px;font-family:Georgia,serif;font-size:24px;display:grid}.blue .subject-icon{background:#ddebf7}.violet .subject-icon{background:#eae0f4}.orange .subject-icon{background:#f9e4d1}.pink .subject-icon{background:#f2e0e7}.teal .subject-icon{background:#dceee8}.tile-status{color:var(--muted);font-size:11px}.subject-label{letter-spacing:1px;color:var(--teal);font-size:12px;font-weight:700}.class-tile h2{margin:8px 0;font-family:Georgia,serif;font-size:38px;font-weight:400}.class-tile p,.activity-tile 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0}.empty-state{padding:26px}}:root{--ink:#173b40;--muted:#617174;--paper:#f6f4ed;--accent:#deed82;--line:#d4dcd6;--teal:#17675f}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.6}main{max-width:1240px;margin:auto;padding:0 44px}header{border-bottom:1px solid var(--line);align-items:center;gap:30px;min-height:105px;display:flex}.brand{color:var(--ink);font-size:23px;font-weight:700;text-decoration:none}.brand span{color:var(--teal)}.meta{letter-spacing:1.7px;margin-left:auto;font-size:11px}.landing{grid-template-columns:1.4fr 1fr;align-items:center;gap:75px;padding:100px 0;display:grid}.eyebrow{letter-spacing:2px;color:var(--teal);font-size:11px;font-weight:700}h1{letter-spacing:-2.5px;margin:24px 0;font-family:Georgia,serif;font-size:66px;font-weight:400;line-height:1.1}h1 em{color:var(--teal);font-weight:400}h2{margin:18px 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0;text-decoration:underline}.route{color:var(--teal);flex-direction:column;gap:8px;margin:30px 0;font-size:13px;display:flex}.route b{color:var(--ink);margin-left:20px;font-size:15px}footer{border-top:1px solid var(--line);color:var(--muted);margin-top:40px;padding:28px 0;font-size:12px}.overview,.reflection{padding:60px 0}.cards{grid-template-columns:repeat(3,1fr);gap:20px;margin:35px 0;display:grid}.number{background:var(--accent);border-radius:50%;place-items:center;width:40px;height:40px;font-size:14px;font-weight:700;display:inline-grid}.exercise{padding:35px 0}.stepnav{justify-content:space-between;align-items:center;font-size:13px;display:flex}.progress{background:#dfe5dc;border-radius:5px;height:5px;margin:22px 0 45px;overflow:hidden}.progress>div{background:var(--teal);height:100%;transition:width .3s}.exercisegrid{grid-template-columns:1fr 1.7fr;gap:50px;display:grid}.rule{background:#e9eddf;border-radius:14px;margin:25px 0;padding:20px}.rule p{margin-bottom:0;font-size:15px}.options label{border:1px solid var(--line);cursor:pointer;border-radius:10px;align-items:flex-start;gap:12px;padding:15px;font-size:16px;display:flex}.options .selected{border-color:var(--teal);background:#edf3e5}input[type=radio]{accent-color:var(--teal);flex-shrink:0;margin-top:7px}.feedback{border-radius:12px;margin:22px 0;padding:20px;font-size:16px}.feedback p:last-child{margin-bottom:0}.correct{background:#e8f2dd}.hint{background:#fff0ce}.navigation{border-top:1px solid var(--line);justify-content:space-between;gap:12px;margin-top:30px;display:flex}.summary h2{font-family:Georgia,serif;font-size:40px}.rating{max-width:750px}fieldset{border:0;margin:20px 0;padding:0}.stars{gap:10px;display:flex}.stars button{color:#bac2b3;background:0 0;margin:0;padding:0 5px;font-size:39px}.stars .lit,.stars button:hover{color:#a76b08}legend{color:var(--muted);font-size:13px}textarea{min-height:115px}.revisit{margin:25px 0}.revisit button{text-align:left;display:block}.error{color:#81351f;background:#f8ddd3;border-radius:10px;padding:20px}.saved{color:var(--teal)}:focus-visible{outline-offset:4px;outline:3px solid #a6bc25}@media (width<=800px){main{padding:0 22px}header{flex-wrap:wrap;gap:12px;min-height:85px}.brand{font-size:19px}.meta{font-size:9px}.landing{grid-template-columns:1fr;gap:25px;padding:40px 0}h1{letter-spacing:-1.5px;font-size:49px}.cards{grid-template-columns:1fr}.exercisegrid{grid-template-columns:1fr;gap:16px}.exercisegrid aside h2{margin:8px 0}.rule{margin:12px 0}.card{padding:24px}.exercise{padding-top:20px}.progress{margin-bottom:25px}.overview,.reflection{padding-top:35px}.stars{gap:16px}}