.lesson-dashboard{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(300px,.82fr);gap:18px;align-items:start}.course-mode-note{border-left:6px solid var(--brand);background:rgba(22,101,52,.09);padding:16px 18px;border-radius:0 18px 18px 0;margin:18px 0}.course-step{background:rgba(255,250,240,.96);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:24px;margin:0 0 20px;scroll-margin-top:90px}.course-step-number{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:var(--paper);font-weight:900;margin-right:10px}.seek-link{border:0;cursor:pointer}.seek-link:hover{background:var(--ink);color:var(--paper);text-decoration:none}.lesson-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:20px;align-items:start}.lesson-sidebar{position:sticky;top:82px;background:rgba(255,250,240,.94);border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow);max-height:calc(100vh - 104px);overflow:auto}.lesson-sidebar h3{font-size:1rem;margin-bottom:10px}.lesson-sidebar a{display:block;padding:8px 10px;border-radius:12px;color:var(--ink);font-size:.92rem}.lesson-sidebar a:hover,.lesson-sidebar a.active{background:var(--soft);text-decoration:none}.lesson-sidebar small{display:block;color:var(--muted)}.course-step .step-grid{grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr)}.course-quote{margin:12px 0 16px;padding:16px 18px;border-left:5px solid var(--accent);background:#fff4df;border-radius:0 16px 16px 0;color:#4a3515}.course-quote strong{display:block;color:#7c2d12;margin-bottom:6px}.mode-switch{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.evidence-shell{margin-top:28px}.evidence-shell summary{font-size:1.15rem}.practice-checklist{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}.practice-checklist .point-box{margin:0;background:#fffdf6}.course-card-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin-top:16px}.course-card-list .panel{padding:18px}@media(max-width:980px){.lesson-dashboard,.lesson-layout,.course-step .step-grid{grid-template-columns:1fr}.lesson-sidebar{position:relative;top:auto;max-height:none}}