.viewer-shell[data-astro-cid-dzwsr3br]{display:grid;grid-template-columns:272px 1fr;min-height:calc(100vh - 64px);margin-top:64px}.viewer-sidebar[data-astro-cid-dzwsr3br]{border-right:1px solid var(--border-soft);background:var(--surface-2);position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto;display:flex;flex-direction:column}.sidebar-header[data-astro-cid-dzwsr3br]{padding:1.1rem 1rem;border-bottom:1px solid 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1rem;text-decoration:none;border-left:2px solid transparent;transition:background .1s}.module-nav-item[data-astro-cid-dzwsr3br]:hover{background:var(--surface)}.module-nav-item[data-astro-cid-dzwsr3br].active{background:var(--surface);border-left-color:var(--electric)}.mod-status[data-astro-cid-dzwsr3br]{font-family:var(--font-mono);font-size:.65rem;color:var(--text-muted);width:18px;flex-shrink:0;padding-top:1px;text-align:center}.mod-info[data-astro-cid-dzwsr3br]{display:flex;flex-direction:column;gap:.18rem;min-width:0}.mod-title[data-astro-cid-dzwsr3br]{font-size:.8rem;color:var(--text-primary);line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.module-nav-item[data-astro-cid-dzwsr3br].active .mod-title[data-astro-cid-dzwsr3br]{color:var(--electric);font-weight:500}.mod-meta[data-astro-cid-dzwsr3br]{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap}.viewer-main[data-astro-cid-dzwsr3br]{max-width:780px;padding:2.5rem 3rem 6rem;margin:0 auto;width:100%;box-sizing:border-box}.module-header[data-astro-cid-dzwsr3br]{margin-bottom:2rem}.module-header-meta[data-astro-cid-dzwsr3br]{display:flex;align-items:center;gap:.55rem;margin-bottom:.7rem;flex-wrap:wrap}.module-title-h1[data-astro-cid-dzwsr3br]{font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.2;margin-bottom:.5rem}.module-desc[data-astro-cid-dzwsr3br]{color:var(--text-muted);font-style:italic;font-size:1rem;max-width:600px}.tag-free[data-astro-cid-dzwsr3br]{background:var(--green-100, #d1fae5);color:var(--green-700, #15803d);font-size:.6rem;padding:.15em .5em;border-radius:9999px;text-transform:uppercase;letter-spacing:.07em;font-weight:600}.video-wrapper[data-astro-cid-dzwsr3br]{position:relative;aspect-ratio:16 / 9;border-radius:var(--radius-md);overflow:hidden;background:#000;margin-bottom:2.5rem;box-shadow:var(--shadow-md)}.video-wrapper[data-astro-cid-dzwsr3br] iframe[data-astro-cid-dzwsr3br],.video-wrapper[data-astro-cid-dzwsr3br] video[data-astro-cid-dzwsr3br]{position:absolute;inset:0;width:100%;height:100%;border:none}.module-prose[data-astro-cid-dzwsr3br]{margin-bottom:3rem}.module-nav-item[data-astro-cid-dzwsr3br].complete .mod-num[data-astro-cid-dzwsr3br]{color:var(--text-muted)}.mod-check[data-astro-cid-dzwsr3br]{display:inline-flex;align-items:center;justify-content:center;width:1.4em;height:1.4em;border-radius:999px;background:var(--green-mid, #2D6838);color:#fff;font-size:.7em;font-weight:600;line-height:1}.module-complete-row[data-astro-cid-dzwsr3br]{display:flex;justify-content:flex-end;align-items:center;gap:.75rem;margin:2rem 0 0;padding-top:1.5rem;border-top:1px dashed var(--border-soft)}.mark-complete-wrap{display:inline-flex;align-items:center;gap:.75rem}.mark-complete--done{cursor:default!important;opacity:.85}.mark-complete-error{color:#b91c1c;font-size:.8rem}.module-footer[data-astro-cid-dzwsr3br]{padding-top:2rem;border-top:1px solid var(--border-soft)}.module-pager[data-astro-cid-dzwsr3br]{display:flex;justify-content:space-between;align-items:flex-end;gap:1.5rem;flex-wrap:wrap}.pager-cell[data-astro-cid-dzwsr3br]{display:flex;flex-direction:column;gap:.45rem;max-width:45%;min-width:0}.pager-cell--next[data-astro-cid-dzwsr3br]{align-items:flex-end;text-align:right}.pager-label[data-astro-cid-dzwsr3br]{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted)}.pager-title[data-astro-cid-dzwsr3br]{font-size:.92rem;color:var(--text-primary);line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.pager-btn[data-astro-cid-dzwsr3br]{white-space:nowrap;align-self:flex-start}.pager-cell--next[data-astro-cid-dzwsr3br] .pager-btn[data-astro-cid-dzwsr3br]{align-self:flex-end}.pager-complete[data-astro-cid-dzwsr3br]{margin-left:auto}@media(max-width:860px){.viewer-shell[data-astro-cid-dzwsr3br]{grid-template-columns:1fr}.viewer-sidebar[data-astro-cid-dzwsr3br]{position:static;height:auto;border-right:none;border-bottom:1px solid var(--border-soft);max-height:40vh}.viewer-main[data-astro-cid-dzwsr3br]{padding:1.5rem 1.25rem 4rem}.pager-cell[data-astro-cid-dzwsr3br]{max-width:100%}.module-pager[data-astro-cid-dzwsr3br]{gap:1rem}}