.page-header[data-astro-cid-we6un2hb]{margin-bottom:var(--space-2xl);padding-bottom:var(--space-xl);border-bottom:1px solid var(--color-border)}.page-title[data-astro-cid-we6un2hb]{font-size:2rem;font-weight:700;letter-spacing:-.03em;margin-bottom:var(--space-xs)}.page-desc[data-astro-cid-we6un2hb]{font-size:1rem;color:var(--color-text-secondary);line-height:1.6}.modules-grid[data-astro-cid-we6un2hb]{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-lg)}.module[data-astro-cid-we6un2hb]{border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.module-wide[data-astro-cid-we6un2hb]{grid-column:1 / -1}.module-header[data-astro-cid-we6un2hb]{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-md) var(--space-lg);background:var(--color-bg-tertiary);border-bottom:1px solid var(--color-border)}.module-header-left[data-astro-cid-we6un2hb]{display:flex;align-items:center;gap:var(--space-sm);flex-shrink:0}.module-tag[data-astro-cid-we6un2hb]{font-size:.625rem;font-weight:700;color:var(--color-accent);text-transform:uppercase;letter-spacing:.06em;white-space:nowrap}.module-title[data-astro-cid-we6un2hb]{font-size:1rem;font-weight:600;letter-spacing:-.02em;color:var(--color-text-primary);white-space:nowrap}.module-desc[data-astro-cid-we6un2hb]{font-size:.8125rem;color:var(--color-text-tertiary);text-align:right;line-height:1.4}.lessons[data-astro-cid-we6un2hb]{display:flex;flex-direction:column}.lessons-multi[data-astro-cid-we6un2hb]{display:grid;grid-template-columns:repeat(2,1fr)}.lessons-multi[data-astro-cid-we6un2hb] .lesson[data-astro-cid-we6un2hb]{border-bottom:1px solid var(--color-border);border-right:1px solid var(--color-border)}.lessons-multi[data-astro-cid-we6un2hb] .lesson[data-astro-cid-we6un2hb]:nth-child(2n){border-right:none}.lessons-multi[data-astro-cid-we6un2hb] .lesson[data-astro-cid-we6un2hb]:nth-last-child(-n+2){border-bottom:none}.lesson[data-astro-cid-we6un2hb]{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border-bottom:1px solid var(--color-border);color:var(--color-text-primary);transition:background .15s ease}.lessons[data-astro-cid-we6un2hb]:not(.lessons-multi) .lesson[data-astro-cid-we6un2hb]:last-child{border-bottom:none}.lesson[data-astro-cid-we6un2hb]:hover{background:var(--color-bg-secondary);color:var(--color-text-primary)}.lesson-num[data-astro-cid-we6un2hb]{font-size:.75rem;font-weight:500;color:var(--color-text-tertiary);min-width:28px;font-variant-numeric:tabular-nums}.lesson-title[data-astro-cid-we6un2hb]{flex:1;font-size:.875rem;font-weight:400}.lesson-arrow[data-astro-cid-we6un2hb]{color:var(--color-text-tertiary);opacity:0;transition:opacity .15s ease;flex-shrink:0}.lesson[data-astro-cid-we6un2hb]:hover .lesson-arrow[data-astro-cid-we6un2hb]{opacity:1}.lesson-done .lesson-num[data-astro-cid-we6un2hb]:before{content:"";display:inline-block;width:6px;height:10px;border:solid var(--color-success);border-width:0 2px 2px 0;transform:rotate(45deg);margin-right:6px;vertical-align:-1px}.lesson-done .lesson-title[data-astro-cid-we6un2hb]{color:var(--color-text-tertiary)}.source-tag[data-astro-cid-we6un2hb]{font-size:.625rem;padding:2px 7px;border-radius:var(--radius-full);background:var(--color-accent-light);color:var(--color-accent);font-weight:600;white-space:nowrap;flex-shrink:0}@media(max-width:960px){.modules-grid[data-astro-cid-we6un2hb]{grid-template-columns:1fr}.module-wide[data-astro-cid-we6un2hb]{grid-column:auto}.lessons-multi[data-astro-cid-we6un2hb]{grid-template-columns:1fr}.lessons-multi[data-astro-cid-we6un2hb] .lesson[data-astro-cid-we6un2hb]{border-right:none}.lessons-multi[data-astro-cid-we6un2hb] .lesson[data-astro-cid-we6un2hb]:nth-last-child(-n+2){border-bottom:1px solid var(--color-border)}.lessons-multi[data-astro-cid-we6un2hb] .lesson[data-astro-cid-we6un2hb]:last-child{border-bottom:none}}@media(max-width:640px){.page-title[data-astro-cid-we6un2hb]{font-size:1.625rem}.module-header[data-astro-cid-we6un2hb]{flex-direction:column;align-items:flex-start;gap:var(--space-xs)}.module-desc[data-astro-cid-we6un2hb]{text-align:left}}