.auth-gate[data-astro-cid-fm5qus6b]{min-height:calc(100vh - 80px);display:flex;align-items:center;justify-content:center;padding:2rem;background:var(--light-gray)}.auth-card[data-astro-cid-fm5qus6b]{background:var(--white);border-radius:16px;padding:3rem;max-width:440px;width:100%;text-align:center;box-shadow:0 4px 30px #0000001a}.auth-logo[data-astro-cid-fm5qus6b] img[data-astro-cid-fm5qus6b]{width:72px;height:72px;border-radius:12px;margin-bottom:1.5rem;object-fit:cover}.auth-card[data-astro-cid-fm5qus6b] h1[data-astro-cid-fm5qus6b]{font-size:1.75rem;font-weight:700;color:var(--text-dark);margin-bottom:.5rem}.auth-subtitle[data-astro-cid-fm5qus6b]{color:var(--text-light);margin-bottom:2rem;font-size:.95rem}.auth-form[data-astro-cid-fm5qus6b],.input-group[data-astro-cid-fm5qus6b]{display:flex;flex-direction:column;gap:.75rem}.input-group[data-astro-cid-fm5qus6b] input[data-astro-cid-fm5qus6b]{width:100%;padding:.875rem 1rem;border:2px solid #e2e8f0;border-radius:8px;font-size:1rem;font-family:var(--font-sans);color:var(--text-dark);transition:var(--transition);outline:none}.input-group[data-astro-cid-fm5qus6b] input[data-astro-cid-fm5qus6b]:focus{border-color:var(--primary-green);box-shadow:0 0 0 3px #2d7a4d26}.btn-primary[data-astro-cid-fm5qus6b]{width:100%;padding:.875rem;background:var(--primary-green);color:var(--white);border:none;border-radius:8px;font-size:1rem;font-weight:600;font-family:var(--font-sans);cursor:pointer;transition:var(--transition)}.btn-primary[data-astro-cid-fm5qus6b]:hover{background:var(--dark-teal);transform:translateY(-1px)}.auth-error[data-astro-cid-fm5qus6b]{display:none;color:#c0392b;font-size:.875rem;background:#fdf0ed;padding:.75rem;border-radius:6px;border-left:3px solid #c0392b}.auth-note[data-astro-cid-fm5qus6b]{margin-top:1.5rem;font-size:.85rem;color:var(--text-light)}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-6px)}80%{transform:translate(6px)}}.shake[data-astro-cid-fm5qus6b]{animation:shake .5s ease-in-out}.lectures-hero[data-astro-cid-fm5qus6b]{background:linear-gradient(135deg,var(--primary-green) 0%,var(--dark-teal) 100%);color:var(--white);padding:4rem 0 3rem;text-align:center}.lectures-hero[data-astro-cid-fm5qus6b] h1[data-astro-cid-fm5qus6b]{font-size:clamp(2rem,4vw,3rem);font-weight:700;margin-bottom:1rem}.lectures-hero[data-astro-cid-fm5qus6b] p[data-astro-cid-fm5qus6b]{font-size:1.15rem;opacity:.9;max-width:600px;margin:0 auto}.lectures-body[data-astro-cid-fm5qus6b]{padding:3rem 2rem 5rem}.library-updated[data-astro-cid-fm5qus6b]{text-align:right;font-size:.85rem;color:var(--text-light);margin-bottom:2rem}.loading-state[data-astro-cid-fm5qus6b],.error-state[data-astro-cid-fm5qus6b]{text-align:center;padding:4rem 2rem;color:var(--text-light)}.spinner[data-astro-cid-fm5qus6b]{width:40px;height:40px;border:3px solid #e2e8f0;border-top-color:var(--primary-green);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 1rem}@keyframes spin{to{transform:rotate(360deg)}}.series-block[data-astro-cid-fm5qus6b]{margin-bottom:3.5rem}.series-header[data-astro-cid-fm5qus6b]{margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid var(--light-gray)}.series-header[data-astro-cid-fm5qus6b] h2[data-astro-cid-fm5qus6b]{font-size:1.5rem;font-weight:700;color:var(--primary-green);margin-bottom:.4rem}.series-header[data-astro-cid-fm5qus6b] p[data-astro-cid-fm5qus6b]{color:var(--text-light);font-size:.95rem}.lecture-grid[data-astro-cid-fm5qus6b]{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.lecture-card[data-astro-cid-fm5qus6b]{background:var(--white);border:1px solid #e2e8f0;border-radius:12px;padding:1.5rem;display:flex;flex-direction:column;gap:.75rem;transition:var(--transition)}.lecture-card[data-astro-cid-fm5qus6b]:hover{border-color:var(--primary-green);box-shadow:0 4px 20px #2d7a4d1f;transform:translateY(-2px)}.lecture-card-header[data-astro-cid-fm5qus6b]{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem}.pptx-icon[data-astro-cid-fm5qus6b]{width:40px;height:40px;background:linear-gradient(135deg,#d14524,#e87152);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.pptx-icon[data-astro-cid-fm5qus6b] svg[data-astro-cid-fm5qus6b]{width:20px;height:20px}.lecture-meta[data-astro-cid-fm5qus6b]{display:flex;flex-direction:column;align-items:flex-end;gap:.35rem}.lecture-date[data-astro-cid-fm5qus6b]{font-size:.78rem;color:var(--text-light)}.version-badge[data-astro-cid-fm5qus6b]{font-size:.72rem;font-weight:600;background:var(--cream);color:var(--primary-green);padding:.2rem .5rem;border-radius:999px;border:1px solid var(--light-green)}.lecture-title[data-astro-cid-fm5qus6b]{font-size:1.05rem;font-weight:700;color:var(--text-dark);line-height:1.4;flex-grow:1}.lecture-description[data-astro-cid-fm5qus6b]{font-size:.875rem;color:var(--text-light);line-height:1.5;flex-grow:1}.download-btn[data-astro-cid-fm5qus6b]{display:inline-flex;align-items:center;gap:.5rem;padding:.65rem 1.1rem;background:var(--primary-green);color:var(--white);border-radius:7px;font-size:.875rem;font-weight:600;text-decoration:none;transition:var(--transition);margin-top:auto}.download-btn[data-astro-cid-fm5qus6b]:hover{background:var(--dark-teal);color:var(--white);transform:none}.signout-row[data-astro-cid-fm5qus6b]{text-align:center;padding-top:2rem;border-top:1px solid #e2e8f0;margin-top:2rem}.btn-ghost[data-astro-cid-fm5qus6b]{background:none;border:1px solid #e2e8f0;border-radius:7px;padding:.5rem 1.25rem;font-size:.85rem;color:var(--text-light);cursor:pointer;font-family:var(--font-sans);transition:var(--transition)}.btn-ghost[data-astro-cid-fm5qus6b]:hover{border-color:#c0392b;color:#c0392b}@media (max-width: 640px){.auth-card[data-astro-cid-fm5qus6b]{padding:2rem 1.5rem}.lecture-grid[data-astro-cid-fm5qus6b]{grid-template-columns:1fr}}