.lectures-hero[data-astro-cid-fm5qus6b]{padding:clamp(3rem,6vw,4.5rem) 0 2.5rem;background:radial-gradient(circle at 50% 10%,rgba(0,143,137,.15),transparent 70%),var(--bg-body-main);border-bottom:1px solid var(--border-crisp);text-align:center}.lectures-badge[data-astro-cid-fm5qus6b]{display:inline-flex;align-items:center;gap:.5rem;padding:.45rem 1.1rem;background:#10b9811f;border:1px solid #10b981;border-radius:0;font-size:.78rem;font-weight:800;color:#10b981;margin-bottom:1.25rem;text-transform:uppercase;letter-spacing:.05em}.filter-pills-row[data-astro-cid-fm5qus6b]{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;margin-top:2rem}.pill-btn[data-astro-cid-fm5qus6b]{padding:.55rem 1.25rem;background:var(--bg-surface);border:1px solid var(--border-medium);color:var(--text-muted);font-size:.85rem;font-weight:700;cursor:pointer;border-radius:0;transition:all .15s ease}.pill-btn[data-astro-cid-fm5qus6b].active,.pill-btn[data-astro-cid-fm5qus6b]:hover{background:var(--color-brand-teal);border-color:var(--color-brand-teal);color:#fff}.lectures-grid[data-astro-cid-fm5qus6b]{display:grid;grid-template-columns:1fr;gap:1.75rem;margin-top:2.5rem}@media (min-width: 640px){.lectures-grid[data-astro-cid-fm5qus6b]{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.lectures-grid[data-astro-cid-fm5qus6b]{grid-template-columns:repeat(3,1fr)}}.lecture-card[data-astro-cid-fm5qus6b]{background:var(--bg-surface);border:1px solid var(--border-medium);border-radius:0;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:all .25s ease;cursor:pointer}.lecture-card[data-astro-cid-fm5qus6b]:hover{transform:translateY(-4px);border-color:var(--color-brand-teal);box-shadow:var(--shadow-md)}.lecture-thumb-wrap[data-astro-cid-fm5qus6b]{position:relative;width:100%;height:195px;background:#07152b;overflow:hidden}.lecture-thumb-wrap[data-astro-cid-fm5qus6b] img[data-astro-cid-fm5qus6b]{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;opacity:.92;transition:transform .3s ease,opacity .3s ease;display:block}.lecture-card[data-astro-cid-fm5qus6b]:hover .lecture-thumb-wrap[data-astro-cid-fm5qus6b] img[data-astro-cid-fm5qus6b]{transform:scale(1.05);opacity:1}.play-btn-overlay[data-astro-cid-fm5qus6b]{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#07152b59;transition:background .2s ease}.play-circle[data-astro-cid-fm5qus6b]{width:48px;height:48px;border-radius:50%;background:var(--color-brand-teal);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 25px #008f8980;transition:transform .2s ease}.lecture-card[data-astro-cid-fm5qus6b]:hover .play-circle[data-astro-cid-fm5qus6b]{transform:scale(1.12)}.duration-chip[data-astro-cid-fm5qus6b]{position:absolute;bottom:10px;right:10px;padding:.2rem .6rem;background:#000000d9;color:#fff;font-size:.72rem;font-weight:800;border-radius:0;display:flex;align-items:center;gap:.35rem}.lecture-body[data-astro-cid-fm5qus6b]{padding:1.25rem;display:flex;flex-direction:column;flex-grow:1;justify-content:space-between}.lecture-tag-row[data-astro-cid-fm5qus6b]{display:flex;align-items:center;justify-content:space-between;margin-bottom:.6rem}.lecture-cat-tag[data-astro-cid-fm5qus6b]{font-size:.72rem;font-weight:800;color:var(--color-brand-teal);text-transform:uppercase;letter-spacing:.04em}.lecture-level-tag[data-astro-cid-fm5qus6b]{font-size:.7rem;color:var(--text-muted);font-weight:700}.lecture-title[data-astro-cid-fm5qus6b]{font-size:1.05rem;font-weight:800;color:var(--text-heading);line-height:1.35;margin:0 0 .6rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lecture-desc[data-astro-cid-fm5qus6b]{font-size:.84rem;color:var(--text-muted);line-height:1.5;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lecture-footer-meta[data-astro-cid-fm5qus6b]{border-top:1px solid var(--border-subtle);padding-top:.75rem;display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--text-muted)}.video-modal-backdrop[data-astro-cid-fm5qus6b]{position:fixed;inset:0;background:#0a2540d9;backdrop-filter:blur(8px);z-index:99999;display:none;align-items:center;justify-content:center;padding:clamp(1rem,3vw,2rem)}.video-modal-backdrop[data-astro-cid-fm5qus6b].is-open{display:flex}.video-modal-box[data-astro-cid-fm5qus6b]{background:var(--bg-surface);border:1px solid var(--border-medium);border-radius:0;width:100%;max-width:860px;overflow:hidden;box-shadow:0 25px 60px #000000b3;display:flex;flex-direction:column;animation:modalPopIn .25s cubic-bezier(.16,1,.3,1)}@keyframes modalPopIn{0%{transform:scale(.95) translateY(12px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}.video-modal-header[data-astro-cid-fm5qus6b]{padding:1rem 1.25rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-medium);background:var(--bg-surface)}.video-frame-wrap[data-astro-cid-fm5qus6b]{position:relative;padding-top:56.25%;background:#000;width:100%}.video-frame-wrap[data-astro-cid-fm5qus6b] iframe[data-astro-cid-fm5qus6b]{position:absolute;top:0;left:0;width:100%;height:100%;border:none}.video-modal-details[data-astro-cid-fm5qus6b]{padding:1.25rem;background:var(--bg-surface)}