.class-progress-line{color:#94a3b8;margin:0;font-size:14px;line-height:1.45}.class-next{border:1px solid var(--lesson-accent-line);background:var(--lesson-accent-soft);border-radius:16px;gap:12px;padding:16px 18px;display:grid}.class-next p{margin:0}.class-next-why{color:#cbd5e1;font-size:14px;line-height:1.55}.class-next .lesson-btn{justify-content:center;align-items:center;gap:6px;min-height:44px;display:inline-flex}.class-mistake-toggle{color:#94a3b8;text-align:left;cursor:pointer;background:0 0;border:0;justify-content:space-between;align-items:center;gap:12px;width:100%;min-height:44px;padding:8px 2px;font-size:14px;font-weight:600;line-height:1.4;display:flex}.class-mistake-toggle:hover{color:#e2e8f0}.class-mistake-toggle svg{flex:none;transition:transform .2s}.class-mistake-toggle svg.is-open{transform:rotate(180deg)}.class-rank-link{margin:0}.class-rank-link .lesson-link{min-height:44px}.class-parent-band{color:#d1fae5;background:#10b98114;border:1px solid #10b98166;border-radius:14px;gap:8px;margin:0 0 16px;padding:14px 16px;font-size:15px;line-height:1.5;display:grid}.class-parent-band b{color:#fff}.class-parent-band select{border:1px solid var(--lesson-line);background:var(--color-bg);color:#e2e8f0;border-radius:10px;max-width:100%;min-height:44px;padding:0 10px;font-size:15px}.class-parent-band a{color:#6ee7b7;text-underline-offset:3px;font-weight:600;text-decoration:underline}.class-lesson--static{cursor:default}.class-lesson--static:hover{border-color:var(--lesson-line);background:var(--lesson-surface);box-shadow:none}.class-mastery--text{color:#94a3b8;white-space:nowrap;align-items:center;gap:4px;margin-left:8px;font-size:14px;font-weight:500;display:inline-flex}html[data-theme=light] .lesson-shell .class-progress-line,html[data-theme=light] .lesson-shell .class-next-why{color:#334155}html[data-theme=light] .lesson-shell .class-mistake-toggle{color:#475569}html[data-theme=light] .lesson-shell .class-mistake-toggle:hover{color:#0f172a}html[data-theme=light] .lesson-shell .class-parent-band{color:#065f46}html[data-theme=light] .lesson-shell .class-parent-band b{color:#064e3b}html[data-theme=light] .lesson-shell .class-parent-band a{color:#047857}html[data-theme=light] .lesson-shell .class-parent-band select{color:#0f172a}html[data-theme=light] .lesson-shell .class-mastery--text{color:#475569}@media (min-width:640px){.class-next{grid-template-columns:1fr auto;align-items:center}}