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var(--color-border);border-radius:var(--radius-8);padding:var(--space-5);background:var(--color-surface)}.module-row--done{border-color:var(--color-primary-low);background:linear-gradient(180deg,rgba(94,234,212,.04),transparent)}.module-header{margin-bottom:var(--space-2)}.module-row-title{font-weight:600}.module-progress{margin:var(--space-3) 0}.module-toggle{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;color:var(--color-fg-muted);padding:var(--space-2) 0;text-align:left}.module-toggle.is-open,.module-toggle:hover{color:var(--color-fg)}.lesson-list{display:flex;flex-direction:column;gap:var(--space-1)}.lesson-row{width:100%;text-align:left;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;padding:var(--space-3) var(--space-4);border-radius:var(--radius-6)}.lesson-row:hover{background:color-mix(in oklch,var(--color-fg) 4%,transparent)}.lesson-row--done .lesson-row-title{color:var(--color-fg-muted)}.lesson-row-main{display:flex;align-items:center;gap:var(--space-3);width:100%}.lesson-row-chevron{margin-left:auto;transform:rotate(0deg)}.lesson-detail{padding:var(--space-4);border-top:1px solid var(--color-border)}.lesson-detail-section{margin-top:var(--space-2)}.lesson-detail-actions{margin-top:var(--space-3);display:flex;gap:var(--space-3)}.mastery-header-skeleton{height:24px;width:260px}.mastery-header-skeleton-sm{height:24px;width:120px}.progress-rail{display:flex;flex-direction:column;gap:var(--space-2)}.progress-rail-track{height:6px;border-radius:9999px;background:var(--color-border);overflow:hidden}.progress-rail-fill{height:100%;border-radius:9999px;background:var(--color-primary);transition:width var(--motion-fast) var(--motion-ease)}.progress-rail-fill--complete{background:var(--color-mint)}.pill,.progress-rail-meta{font-size:12px;color:var(--color-fg-muted)}.pill{display:inline-flex;align-items:center;gap:var(--space-1);padding:2px var(--space-2);border-radius:9999px;border:1px solid var(--color-border)}.pill-done{border-color:var(--color-mint);color:var(--color-mint)}.current-focus{border:1px solid var(--color-border);border-radius:var(--radius-8);padding:var(--space-4);background:var(--color-surface)}.current-focus-header{margin-bottom:var(--space-2)}.current-focus-meta{margin-top:var(--space-1)}.mastery-body{display:grid;grid-template-columns:1fr 220px;grid-gap:var(--space-6);gap:var(--space-6)}.mastery-rail{position:-webkit-sticky;position:sticky;top:var(--space-6);height:-moz-fit-content;height:fit-content}.mastery--focus .mastery-main{opacity:.4;pointer-events:none}