.learning-path{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px;padding:0;list-style:none}.learning-path a{display:block;color:var(--muted);text-decoration:none;padding:7px 12px;background:#f2f6f7;border-radius:4px;font-size:13px}.learning-path a:hover{color:var(--accent);background:#e3edef}.lesson-section{margin-top:32px;scroll-margin-top:24px}.lesson-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:16px}.lesson-heading h2{font-size:20px;margin:0}.lesson-heading span{font-size:12px;color:var(--muted)}.lesson-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.reading{max-width:72ch}.reading p{line-height:1.85}.reading h3{font-size:16px;margin:24px 0 8px}.reading h3:first-child{margin-top:0}.learning-note{color:var(--muted);font-size:13px}.review-table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}.review-table th{font-size:12px;font-weight:400;color:var(--muted);text-align:right;padding:12px 8px;border-bottom:1px solid var(--line)}.review-table td{text-align:right;padding:12px 8px;border-bottom:1px solid var(--line)}.review-table th:first-child,.review-table td:first-child{text-align:left}.review-empty{padding:18px 0;color:var(--muted)}details{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}summary{cursor:pointer;min-height:44px;font-weight:500}details p{font-size:14px;color:var(--muted)}.tutor{background:#f2f6f7;padding:22px;border-radius:8px}.tutor h3{font-size:17px;margin:0 0 6px}.tutor .demo-label{font-size:12px;color:var(--muted);margin:0 0 16px}.tutor-actions{display:flex;flex-direction:column;gap:8px}.tutor-actions button{text-align:left;background:white}.tutor-response{font-size:14px;margin-top:18px;white-space:pre-line;line-height:1.8}.tutor-source{font-size:12px;color:var(--muted);margin-top:12px}.quiz-options{display:grid;gap:10px;margin:18px 0}.quiz-options button{text-align:left;white-space:normal}.quiz-options button[aria-pressed=true]{border-color:var(--accent);background:#e4eef0}.quiz-feedback{padding:16px;background:#f2f6f7;line-height:1.8;font-size:14px}.quiz-feedback:empty{display:none}.study-status{font-size:13px;color:var(--accent)}.task-brief{padding:16px 20px;background:#f2f6f7;margin-bottom:20px;border-radius:8px;font-size:14px}.task-brief p{margin:0}.task-brief strong{font-weight:600}.post-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:16px}.post-actions a{color:var(--accent);font-size:14px;text-underline-offset:4px}html{scroll-behavior:smooth}::selection{background:#dcebee;color:#131416}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media(max-width:1050px){.lesson-grid{grid-template-columns:1fr}.tutor-actions{flex-direction:row;flex-wrap:wrap}.tutor-actions button{flex:1;min-width:150px}}@media(max-width:650px){.lesson-heading{display:block}.lesson-heading span{display:block;margin-top:6px}.review-table{font-size:12px}.review-table td,.review-table th{padding:10px 4px}.tutor{padding:18px}.learning-path{gap:6px}.learning-path a{padding:7px 9px}.lesson-section{margin-top:28px}}