.course-page[data-astro-cid-rz7llb3g]{padding:4rem 0 6rem}.container[data-astro-cid-rz7llb3g]{max-width:1200px;margin:0 auto;padding:0 2rem}.course-header[data-astro-cid-rz7llb3g]{text-align:center;margin-bottom:3rem}.header-badges[data-astro-cid-rz7llb3g]{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:1.5rem;flex-wrap:wrap}.live-badge[data-astro-cid-rz7llb3g]{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:#ff47571a;border:1px solid rgba(255,71,87,.2);border-radius:30px;font-size:.85rem;color:#ff4757}.live-dot[data-astro-cid-rz7llb3g]{width:8px;height:8px;background:var(--accent-green);border-radius:50%;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.2)}}.course-title[data-astro-cid-rz7llb3g]{font-size:clamp(2.5rem,6vw,4rem);font-weight:900;margin-bottom:.5rem;background:linear-gradient(135deg,#ff4757,#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.course-subtitle[data-astro-cid-rz7llb3g]{font-size:1.2rem;color:var(--text-secondary);margin-bottom:.5rem}.course-desc[data-astro-cid-rz7llb3g]{font-size:1rem;color:var(--text-muted);max-width:600px;margin:0 auto 2rem}.course-stats[data-astro-cid-rz7llb3g]{display:flex;justify-content:center;gap:3rem;margin-bottom:1.5rem}.stat[data-astro-cid-rz7llb3g]{display:flex;flex-direction:column;align-items:center}.stat-value[data-astro-cid-rz7llb3g]{font-family:Sora,JetBrains Mono,monospace;font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,#ff4757,#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label[data-astro-cid-rz7llb3g]{font-size:.85rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.vol-link[data-astro-cid-rz7llb3g] a[data-astro-cid-rz7llb3g]{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;background:#ffffff08;border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-size:.9rem;transition:all var(--transition-fast)}.vol-link[data-astro-cid-rz7llb3g] a[data-astro-cid-rz7llb3g]:hover{background:#8b5cf61a;border-color:var(--accent-purple);color:var(--text-primary)}.expand-controls[data-astro-cid-rz7llb3g]{display:flex;justify-content:flex-end;margin-bottom:1.5rem;max-width:900px;margin-left:auto;margin-right:auto}.expand-btn[data-astro-cid-rz7llb3g]{display:flex;align-items:center;gap:8px;padding:10px 20px;background:transparent;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary);font-family:inherit;font-size:.9rem;cursor:pointer;transition:all var(--transition-fast)}.expand-btn[data-astro-cid-rz7llb3g]:hover{background:#ffffff08;border-color:#ffffff1a;color:var(--text-primary)}.expand-btn[data-astro-cid-rz7llb3g] svg[data-astro-cid-rz7llb3g]{transition:transform .3s ease}.expand-btn[data-astro-cid-rz7llb3g].expanded svg[data-astro-cid-rz7llb3g]{transform:rotate(180deg)}.parts-list[data-astro-cid-rz7llb3g]{display:flex;flex-direction:column;gap:1rem;max-width:900px;margin:0 auto}.part-section[data-astro-cid-rz7llb3g]{border-radius:var(--radius-md);overflow:hidden}.part-header[data-astro-cid-rz7llb3g]{display:flex;align-items:center;gap:1.25rem;width:100%;padding:1.25rem 1.5rem;background:#ffffff05;border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-align:left;font-family:inherit}.part-header[data-astro-cid-rz7llb3g]:hover{background:#ffffff0a;border-color:#ffffff1a;transform:translate(5px)}.part-number[data-astro-cid-rz7llb3g]{font-family:JetBrains Mono,monospace;font-size:.8rem;font-weight:600;padding:8px 14px;background:var(--part-bg);color:var(--part-color);border-radius:var(--radius-sm);min-width:80px;text-align:center}.part-info[data-astro-cid-rz7llb3g]{flex:1}.part-title[data-astro-cid-rz7llb3g]{font-size:1.2rem;font-weight:700;color:var(--text-primary);margin-bottom:4px}.part-description[data-astro-cid-rz7llb3g]{font-size:.85rem;color:var(--text-muted);margin:0}.part-count[data-astro-cid-rz7llb3g]{font-family:JetBrains Mono,monospace;font-size:.8rem;color:var(--text-muted);padding:6px 12px;background:#ffffff08;border-radius:var(--radius-sm)}.toggle-icon[data-astro-cid-rz7llb3g]{width:24px;height:24px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);transition:transform .3s ease}.part-section[data-astro-cid-rz7llb3g].expanded .toggle-icon[data-astro-cid-rz7llb3g]{transform:rotate(180deg)}.lecture-list[data-astro-cid-rz7llb3g]{display:none;padding:.5rem 0 0 2rem;margin-bottom:1rem}.part-section[data-astro-cid-rz7llb3g].expanded .lecture-list[data-astro-cid-rz7llb3g]{display:block;animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.lecture-item[data-astro-cid-rz7llb3g]{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;margin-bottom:.5rem;background:#ffffff05;border:1px solid var(--border-subtle);border-radius:var(--radius-md);text-decoration:none;color:var(--text-primary);transition:all var(--transition-fast)}.lecture-item[data-astro-cid-rz7llb3g]:hover{background:#8b5cf614;border-color:#8b5cf64d;transform:translate(10px)}.lecture-number[data-astro-cid-rz7llb3g]{font-family:JetBrains Mono,monospace;font-size:.8rem;color:var(--text-muted);min-width:35px}.lecture-title[data-astro-cid-rz7llb3g]{flex:1;font-size:1rem;font-weight:500}.lecture-arrow[data-astro-cid-rz7llb3g]{color:var(--text-muted);opacity:0;transform:translate(-10px);transition:all var(--transition-fast)}.lecture-item[data-astro-cid-rz7llb3g]:hover .lecture-arrow[data-astro-cid-rz7llb3g]{opacity:1;transform:translate(0);color:#ff4757}.quick-start[data-astro-cid-rz7llb3g]{position:fixed;bottom:2rem;right:2rem;display:flex;align-items:center;gap:.75rem;padding:1rem 1.75rem;background:linear-gradient(135deg,#ff4757,#8b5cf6);border-radius:50px;color:#fff;font-weight:600;text-decoration:none;box-shadow:0 8px 30px #8b5cf666;transition:all var(--transition-fast);z-index:100}.quick-start[data-astro-cid-rz7llb3g]:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 12px 40px #8b5cf680}@media(max-width:768px){.part-header[data-astro-cid-rz7llb3g]{flex-wrap:wrap;gap:.75rem}.part-count[data-astro-cid-rz7llb3g]{display:none}.lecture-list[data-astro-cid-rz7llb3g]{padding-left:1rem}.course-stats[data-astro-cid-rz7llb3g]{gap:2rem}.quick-start[data-astro-cid-rz7llb3g]{bottom:1rem;right:1rem;padding:.875rem 1.5rem;font-size:.9rem}}