.lecon-shell[data-astro-cid-6maokrpr]{max-width:1180px;margin:0 auto;padding:2.25rem 1.25rem 0;display:grid;grid-template-columns:minmax(0,720px) 260px;justify-content:space-between;gap:4rem}.lecon[data-astro-cid-6maokrpr]{min-width:0}.crumb[data-astro-cid-6maokrpr]{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;font-size:.875rem;color:var(--color-text-muted);margin-bottom:1.5rem}.crumb[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr]{color:var(--color-text-light);text-decoration:none;display:inline-flex}.crumb[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr]:hover{color:var(--color-text)}.crumb[data-astro-cid-6maokrpr] .back[data-astro-cid-6maokrpr]{color:var(--color-text-muted);margin-right:.1rem}h1[data-astro-cid-6maokrpr]{font-family:var(--font-heading);font-weight:400;font-size:clamp(2rem,2.6vw + 1rem,2.6rem);letter-spacing:-.03em;line-height:1.12;margin-bottom:1rem}.pills[data-astro-cid-6maokrpr]{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:2rem}.video[data-astro-cid-6maokrpr]{position:relative;aspect-ratio:16 / 9;margin-bottom:2.25rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;background:var(--color-panel)}.video[data-astro-cid-6maokrpr] iframe[data-astro-cid-6maokrpr]{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:0}.video-gate[data-astro-cid-6maokrpr]{aspect-ratio:auto;min-height:0;display:grid;place-items:center;padding:2rem 1.25rem 1.25rem;text-align:center}.gate-card[data-astro-cid-6maokrpr]{width:100%;max-width:480px}.gate-icon[data-astro-cid-6maokrpr]{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:var(--radius-lg);background:var(--clay);color:#fff;margin-bottom:.9rem}.gate-title[data-astro-cid-6maokrpr]{font-family:var(--font-heading);font-size:1.375rem;letter-spacing:-.025em;line-height:1.25}.gate-text[data-astro-cid-6maokrpr]{margin:.5rem auto .75rem;max-width:42ch;color:var(--color-text-light);font-size:.9375rem}.done-box[data-astro-cid-6maokrpr]{display:flex;gap:.7rem;align-items:center;margin:2.25rem 0 0;padding:.95rem 1.15rem;border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);background:var(--color-surface);font-weight:500;cursor:pointer;transition:border-color var(--transition-short)}.done-box[data-astro-cid-6maokrpr]:hover{border-color:var(--color-text-muted)}.done-box[data-astro-cid-6maokrpr] input[data-astro-cid-6maokrpr]{width:1.1rem;height:1.1rem;accent-color:var(--clay)}.pager[data-astro-cid-6maokrpr]{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-top:2.5rem}.pager[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr]{display:flex;flex-direction:column;gap:.25rem;padding:.9rem 1.1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);text-decoration:none;color:var(--color-text);transition:border-color var(--transition-short)}.pager[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr]:hover{border-color:var(--color-text-muted);color:var(--color-text)}.pager[data-astro-cid-6maokrpr] .next[data-astro-cid-6maokrpr]{text-align:right;align-items:flex-end;grid-column:2}.pager-dir[data-astro-cid-6maokrpr]{display:inline-flex;align-items:center;gap:.3rem;font-size:.8125rem;color:var(--color-text-muted)}.pager-t[data-astro-cid-6maokrpr]{font-weight:500;line-height:1.35}.rail[data-astro-cid-6maokrpr]{position:sticky;top:80px;align-self:start;max-height:calc(100vh - 100px);overflow-y:auto}.rail-card[data-astro-cid-6maokrpr]{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);padding:.7rem .85rem;margin-bottom:1rem}.rail-kicker[data-astro-cid-6maokrpr]{font-size:.75rem;color:var(--color-text-muted)}.rail-name[data-astro-cid-6maokrpr]{font-size:.875rem;font-weight:600;line-height:1.35}.rail-group[data-astro-cid-6maokrpr]+.rail-group[data-astro-cid-6maokrpr]{margin-top:1.1rem}.rail-section[data-astro-cid-6maokrpr]{font-size:.75rem;color:var(--color-text-muted);margin-bottom:.3rem;padding-left:.8rem}.rail-list[data-astro-cid-6maokrpr]{list-style:none}.rail-list[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr]{display:block;padding:.32rem 0 .32rem .8rem;border-left:2px solid transparent;font-size:.875rem;line-height:1.4;color:var(--color-text-light);text-decoration:none}.rail-list[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr]:hover{color:var(--color-text)}.rail-list[data-astro-cid-6maokrpr] a[data-astro-cid-6maokrpr][aria-current]{color:var(--color-text);font-weight:500;border-left-color:var(--color-text)}@media(max-width:1100px){.lecon-shell[data-astro-cid-6maokrpr]{grid-template-columns:minmax(0,720px);justify-content:center}.rail[data-astro-cid-6maokrpr]{display:none}}@media(max-width:560px){.pager[data-astro-cid-6maokrpr]{grid-template-columns:1fr}.pager[data-astro-cid-6maokrpr] .next[data-astro-cid-6maokrpr]{grid-column:1}}