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strong{display:block;font-size:18px}.understanding-card-track{height:4px;margin-top:10px;border-radius:99px;background:var(--line-soft);overflow:hidden}.understanding-card-track i{display:block;height:100%;background:var(--accent)}.understanding-card.inactive{opacity:.52}.understanding-card.inactive strong{font-size:12px;color:var(--muted)}.understanding-next{margin-top:12px;border-left:2px solid var(--accent);padding:5px 0 5px 14px;color:var(--muted);font-size:11px;line-height:1.55}.understanding-next strong{color:var(--text)}.understanding-model-note{margin:10px 0 0;color:var(--dim);font-size:9px;line-height:1.5}.progress-guide-list{display:grid;gap:9px;margin:13px 0}.progress-guide-row{border:1px solid var(--line);border-radius:10px;padding:10px;background:var(--bg-2)}.progress-guide-row-top{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:10px}.progress-guide-row-top strong{color:var(--text)}.progress-guide-row-top 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