.course-hero[data-astro-cid-z7lrcr63]{padding-top:2rem}.course-breadcrumb[data-astro-cid-z7lrcr63]{margin-bottom:2rem}.course-breadcrumb[data-astro-cid-z7lrcr63] a[data-astro-cid-z7lrcr63]{color:var(--primary-color);text-decoration:none;font-weight:500;transition:all .3s ease}.course-breadcrumb[data-astro-cid-z7lrcr63] a[data-astro-cid-z7lrcr63]:hover{text-decoration:underline}.course-header[data-astro-cid-z7lrcr63]{margin-bottom:1.5rem;text-align:center}.section-title[data-astro-cid-z7lrcr63]{color:var(--primary-color);margin-bottom:.5rem;font-size:1.5rem}.section-description[data-astro-cid-z7lrcr63]{color:var(--text-light);font-size:1rem;margin-bottom:1.5rem}.content-section[data-astro-cid-z7lrcr63]{padding:0 0 2.5rem}.two-column-layout[data-astro-cid-z7lrcr63]{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}.notebook-tabs[data-astro-cid-z7lrcr63]{display:flex;flex-direction:column;gap:1rem}.notebook-tab[data-astro-cid-z7lrcr63]{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;background:var(--background, white);border:2px solid var(--border, #e5e7eb);border-radius:.5rem;text-decoration:none;color:var(--text-color);transition:all .3s ease;cursor:pointer}.notebook-tab[data-astro-cid-z7lrcr63]:hover{border-color:var(--primary-color);transform:translate(4px);box-shadow:0 4px 12px #0000001a}.tab-title[data-astro-cid-z7lrcr63]{font-size:1.05rem;font-weight:600;color:var(--primary-color)}.tab-icon[data-astro-cid-z7lrcr63]{font-size:1.5rem;color:var(--primary-color);transition:transform .3s ease}.notebook-tab[data-astro-cid-z7lrcr63]:hover .tab-icon[data-astro-cid-z7lrcr63]{transform:translate(4px)}.link-card-grid[data-astro-cid-z7lrcr63]{display:grid;grid-template-columns:1fr;gap:1rem}.link-card[data-astro-cid-z7lrcr63]{display:flex;align-items:center;gap:1.25rem;background:var(--background);border:2px solid var(--border);border-radius:1rem;padding:1.5rem;text-decoration:none;transition:all .3s ease;box-shadow:var(--shadow);cursor:pointer}.link-card[data-astro-cid-z7lrcr63]:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-color)}.link-icon[data-astro-cid-z7lrcr63]{font-size:2.5rem;flex-shrink:0}.colab-icon[data-astro-cid-z7lrcr63]{display:flex;align-items:center;justify-content:center;width:48px;height:48px}.link-info[data-astro-cid-z7lrcr63]{flex:1}.link-info[data-astro-cid-z7lrcr63] h3[data-astro-cid-z7lrcr63]{margin:0 0 .25rem;color:var(--primary-color);font-size:1rem;font-weight:600;word-break:break-word}.link-info[data-astro-cid-z7lrcr63] p[data-astro-cid-z7lrcr63]{margin:0;color:var(--text-light);font-size:.875rem}.link-arrow[data-astro-cid-z7lrcr63]{font-size:1.25rem;color:var(--text-light);flex-shrink:0;transition:transform .2s ease}.link-card[data-astro-cid-z7lrcr63]:hover .link-arrow[data-astro-cid-z7lrcr63]{transform:translate(3px,-3px);color:var(--primary-color)}.modal-overlay[data-astro-cid-z7lrcr63]{display:none;position:fixed;inset:0;background:#00000080;z-index:1000;align-items:center;justify-content:center}.modal-overlay[data-astro-cid-z7lrcr63].active{display:flex}.modal[data-astro-cid-z7lrcr63]{background:var(--background, #fff);border-radius:1rem;padding:2rem;width:100%;max-width:380px;box-shadow:0 20px 60px #0003;display:flex;flex-direction:column;gap:1rem}.modal[data-astro-cid-z7lrcr63] h2[data-astro-cid-z7lrcr63]{margin:0;font-size:1.25rem;color:var(--text, #1a1a1a)}.modal[data-astro-cid-z7lrcr63] p[data-astro-cid-z7lrcr63]{margin:0;color:var(--text-light, #666);font-size:.9rem}.modal[data-astro-cid-z7lrcr63] input[data-astro-cid-z7lrcr63]{width:100%;padding:.75rem 1rem;border:2px solid var(--border, #e5e7eb);border-radius:.5rem;font-size:1rem;outline:none;transition:border-color .2s ease;box-sizing:border-box;background:var(--background, #fff);color:var(--text, #1a1a1a)}.modal[data-astro-cid-z7lrcr63] input[data-astro-cid-z7lrcr63]:focus{border-color:var(--primary-color, #2563eb)}.modal-error[data-astro-cid-z7lrcr63]{color:#dc2626;font-size:.875rem;display:none}.modal-error[data-astro-cid-z7lrcr63].visible{display:block}.modal-actions[data-astro-cid-z7lrcr63]{display:flex;gap:.75rem;justify-content:flex-end}.btn-cancel[data-astro-cid-z7lrcr63]{padding:.6rem 1.25rem;border:2px solid var(--border, #e5e7eb);border-radius:.5rem;background:transparent;color:var(--text, #1a1a1a);font-size:.9rem;cursor:pointer;transition:all .2s ease}.btn-cancel[data-astro-cid-z7lrcr63]:hover{background:var(--border, #e5e7eb)}.btn-submit[data-astro-cid-z7lrcr63]{padding:.6rem 1.25rem;border:none;border-radius:.5rem;background:var(--primary-color, #2563eb);color:#fff;font-size:.9rem;cursor:pointer;transition:all .2s ease}.btn-submit[data-astro-cid-z7lrcr63]:hover{opacity:.9}@media (max-width: 768px){.two-column-layout[data-astro-cid-z7lrcr63]{grid-template-columns:1fr;gap:2rem}.notebook-tab[data-astro-cid-z7lrcr63]{padding:1rem 1.25rem}.tab-title[data-astro-cid-z7lrcr63]{font-size:1rem}}