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.course-sidebar__link.is-current{color:var(--ink);text-decoration:none}.course-sidebar__progress{margin-top:16px;padding-top:12px;border-top:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3)}.course-sidebar__progress-bar{height:4px;background:var(--surface-2);border-radius:999px;overflow:hidden;margin-top:8px}.course-sidebar__progress-fill{height:100%;background:var(--accent);transition:width var(--transition-base)}.subtopic-article{max-width:var(--reading-column);font-family:var(--body);font-size:17px;line-height:1.65;color:var(--ink)}.subtopic-article .article-header{margin-bottom:var(--space-3xl);padding-bottom:var(--space-2xl);border-bottom:1px solid var(--line)}.subtopic-article .article-header__breadcrumb{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3);margin-bottom:18px}.subtopic-article 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strong{color:var(--ink-2);font-weight:600}.syllabus{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 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0;padding:0;display:grid;gap:12px}.subtopic-list__item{margin:0}.subtopic-list__link{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;padding:20px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);text-decoration:none;color:var(--ink);transition:all var(--transition-fast);font-family:var(--body)}.subtopic-list__link:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-md)}.subtopic-list__num{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--brand-ink);min-width:3rem;text-align:center;font-variant-numeric:tabular-nums;letter-spacing:-.01em}.subtopic-list__body{min-width:0}.subtopic-list__title{font-family:var(--display);font-size:18px;font-weight:600;margin:0 0 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.subtopic-list__num{color:var(--ink-3)}.course-list-meta{display:flex;gap:var(--space-md);align-items:center;margin-bottom:var(--space-lg);font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3)}