.lesson-page-header[data-astro-cid-dk4cww75]{background:linear-gradient(135deg,#091e3a,#020617);color:#fff;padding:3rem 0 2.5rem;border-bottom:4px solid #0284c7}.breadcrumb-nav[data-astro-cid-dk4cww75]{display:flex;align-items:center;gap:.5rem;font-size:.85rem;margin-bottom:1.25rem}.crumb-link[data-astro-cid-dk4cww75]{color:#94a3b8;text-decoration:none;transition:color .2s}.crumb-link[data-astro-cid-dk4cww75]:hover{color:#38bdf8}.crumb-sep[data-astro-cid-dk4cww75]{color:#64748b}.crumb-current[data-astro-cid-dk4cww75]{color:#f1f5f9;font-weight:600}.lesson-meta-badges[data-astro-cid-dk4cww75]{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1rem}.badge-cat-pill[data-astro-cid-dk4cww75]{background:#0284c7;color:#fff;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:.25rem .65rem;border-radius:9999px}.badge-grade-pill[data-astro-cid-dk4cww75],.badge-time-pill[data-astro-cid-dk4cww75],.badge-class-pill[data-astro-cid-dk4cww75]{background:#ffffff1a;color:#cbd5e1;font-size:.8rem;font-weight:600;padding:.25rem .65rem;border-radius:9999px}.lesson-main-title[data-astro-cid-dk4cww75]{font-size:2.35rem;font-weight:900;line-height:1.2;margin:0 0 .5rem;letter-spacing:-.02em}.lesson-unit-sub[data-astro-cid-dk4cww75]{font-size:1.05rem;color:#38bdf8;margin:0;font-weight:500}.lesson-page-main[data-astro-cid-dk4cww75]{padding-top:2rem;padding-bottom:5rem}.lesson-action-bar[data-astro-cid-dk4cww75]{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;background:#0f172a;border:1px solid #1e293b;border-radius:.75rem;padding:1rem 1.25rem;margin-bottom:2.5rem}.action-buttons-group[data-astro-cid-dk4cww75],.action-pdf-group[data-astro-cid-dk4cww75]{display:flex;flex-wrap:wrap;gap:.5rem}.btn-action-nav[data-astro-cid-dk4cww75]{background:#1e293b;color:#e2e8f0;border:1px solid #334155;padding:.55rem .95rem;border-radius:.5rem;font-size:.85rem;font-weight:600;text-decoration:none;transition:all .2s ease}.btn-action-nav[data-astro-cid-dk4cww75]:hover{background:#334155;color:#fff;border-color:#38bdf8}.btn-action-nav[data-astro-cid-dk4cww75].btn-accent{background:#0284c7;border-color:#38bdf8;color:#fff}.btn-action-nav[data-astro-cid-dk4cww75].btn-accent:hover{background:#0369a1}.btn-pdf-download[data-astro-cid-dk4cww75]{display:inline-flex;align-items:center;gap:.4rem;background:#dc2626;color:#fff;padding:.55rem 1rem;border-radius:.5rem;font-size:.85rem;font-weight:700;text-decoration:none;transition:background .2s}.btn-pdf-download[data-astro-cid-dk4cww75]:hover{background:#b91c1c}.btn-print-lesson[data-astro-cid-dk4cww75]{display:inline-flex;align-items:center;gap:.4rem;background:#334155;color:#fff;border:1px solid #475569;padding:.55rem .95rem;border-radius:.5rem;font-size:.85rem;font-weight:600;cursor:pointer;transition:background .2s}.btn-print-lesson[data-astro-cid-dk4cww75]:hover{background:#475569}.lesson-hero-overview[data-astro-cid-dk4cww75]{display:grid;grid-template-columns:280px 1fr;gap:2rem;background:#fff;border:1px solid #e2e8f0;border-radius:1rem;padding:1.75rem;margin-bottom:3rem;box-shadow:0 4px 6px -1px #0000000d}@media(max-width:800px){.lesson-hero-overview[data-astro-cid-dk4cww75]{grid-template-columns:1fr}}.overview-thumb-box[data-astro-cid-dk4cww75]{display:flex;flex-direction:column;align-items:center;gap:.75rem}.overview-img[data-astro-cid-dk4cww75]{width:100%;max-width:250px;height:auto;border-radius:.5rem;border:1px solid #cbd5e1;box-shadow:0 8px 16px -2px #0000001a}.pdf-file-tag[data-astro-cid-dk4cww75]{font-size:.75rem;color:#64748b;font-family:monospace}.overview-heading[data-astro-cid-dk4cww75]{font-size:1.4rem;font-weight:800;color:#0f172a;margin:0 0 1.25rem}.box-subhead[data-astro-cid-dk4cww75]{font-size:.95rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#0284c7;margin:0 0 .5rem}.questions-list[data-astro-cid-dk4cww75],.objectives-list[data-astro-cid-dk4cww75]{margin:0 0 1.25rem;padding-left:1.25rem;color:#334155;line-height:1.55;font-size:.95rem}.questions-list[data-astro-cid-dk4cww75] li[data-astro-cid-dk4cww75],.objectives-list[data-astro-cid-dk4cww75] li[data-astro-cid-dk4cww75]{margin-bottom:.35rem}.lesson-section[data-astro-cid-dk4cww75]{margin-bottom:3.5rem}.section-title-wrap[data-astro-cid-dk4cww75]{margin-bottom:1.25rem}.section-pill[data-astro-cid-dk4cww75]{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#0284c7;margin-bottom:.25rem}.section-heading[data-astro-cid-dk4cww75]{font-size:1.85rem;font-weight:800;color:#0f172a;margin:0 0 .5rem}.section-desc[data-astro-cid-dk4cww75]{font-size:.95rem;color:#64748b;line-height:1.5;max-width:800px;margin:0}.curriculum-blocks[data-astro-cid-dk4cww75]{display:flex;flex-direction:column;gap:1.5rem}.curriculum-card[data-astro-cid-dk4cww75]{background:#fff;border:1px solid #e2e8f0;border-radius:.75rem;padding:1.5rem;box-shadow:0 2px 4px #00000008}.curriculum-card[data-astro-cid-dk4cww75] .card-title[data-astro-cid-dk4cww75]{font-size:1.15rem;font-weight:800;color:#0f172a;margin:0 0 1rem;border-bottom:1px solid #f1f5f9;padding-bottom:.5rem}.standards-grid[data-astro-cid-dk4cww75]{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem}.standard-pill-card[data-astro-cid-dk4cww75]{background:#f8fafc;border:1px solid #e2e8f0;border-left:4px solid #0284c7;border-radius:.5rem;padding:.85rem 1rem}.std-code[data-astro-cid-dk4cww75]{display:block;font-size:.85rem;font-weight:800;color:#0369a1;margin-bottom:.25rem}.std-desc[data-astro-cid-dk4cww75]{font-size:.88rem;color:#334155;line-height:1.45;margin:0 0 .5rem}.std-cat[data-astro-cid-dk4cww75]{font-size:.7rem;font-weight:700;text-transform:uppercase;color:#64748b}.context-list[data-astro-cid-dk4cww75]{margin:0;padding-left:1.25rem;color:#334155;line-height:1.6;font-size:.95rem}.context-list[data-astro-cid-dk4cww75] li[data-astro-cid-dk4cww75]{margin-bottom:.5rem}.materials-tags-row[data-astro-cid-dk4cww75]{display:flex;flex-wrap:wrap;gap:.5rem}.mat-pill[data-astro-cid-dk4cww75]{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0;padding:.35rem .75rem;border-radius:9999px;font-size:.85rem;font-weight:600}.activity-steps-list[data-astro-cid-dk4cww75]{margin:0;padding-left:1.25rem}.activity-step-item[data-astro-cid-dk4cww75]{margin-bottom:1.25rem;color:#334155}.step-num[data-astro-cid-dk4cww75]{display:block;font-size:1rem;color:#0f172a;margin-bottom:.25rem}.step-detail[data-astro-cid-dk4cww75]{margin:0 0 .35rem;line-height:1.5;font-size:.95rem}.step-tip[data-astro-cid-dk4cww75]{font-size:.85rem;color:#b45309;background:#fffbeb;border-left:3px solid #f59e0b;padding:.35rem .75rem;border-radius:0 .35rem .35rem 0;margin:0}.wrapup-grid[data-astro-cid-dk4cww75]{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}@media(max-width:768px){.wrapup-grid[data-astro-cid-dk4cww75]{grid-template-columns:1fr}}.wrapup-col[data-astro-cid-dk4cww75] h4[data-astro-cid-dk4cww75]{font-size:.95rem;font-weight:700;color:#0f172a;margin:0 0 .5rem}.wrapup-col[data-astro-cid-dk4cww75] ul[data-astro-cid-dk4cww75]{margin:0;padding-left:1.25rem;color:#334155;font-size:.9rem;line-height:1.5}.wrapup-col[data-astro-cid-dk4cww75] ul[data-astro-cid-dk4cww75] li[data-astro-cid-dk4cww75]{margin-bottom:.4rem}.back-to-lessons-banner[data-astro-cid-dk4cww75]{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem;background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff;border-radius:1rem;padding:2rem;margin-top:4rem}.banner-text[data-astro-cid-dk4cww75] h3[data-astro-cid-dk4cww75]{font-size:1.35rem;font-weight:800;margin:0 0 .35rem}.banner-text[data-astro-cid-dk4cww75] p[data-astro-cid-dk4cww75]{font-size:.95rem;color:#94a3b8;margin:0;max-width:600px}.btn-return-hub[data-astro-cid-dk4cww75]{display:inline-flex;align-items:center;background:#0284c7;color:#fff;font-weight:700;padding:.75rem 1.5rem;border-radius:.5rem;text-decoration:none;transition:background .2s}.btn-return-hub[data-astro-cid-dk4cww75]:hover{background:#0369a1}@media(max-width:640px){.lesson-main-title[data-astro-cid-dk4cww75]{font-size:1.75rem}.lesson-action-bar[data-astro-cid-dk4cww75]{flex-direction:column;align-items:stretch}.action-buttons-group[data-astro-cid-dk4cww75],.action-pdf-group[data-astro-cid-dk4cww75]{flex-direction:column}.btn-action-nav[data-astro-cid-dk4cww75],.btn-pdf-download[data-astro-cid-dk4cww75],.btn-print-lesson[data-astro-cid-dk4cww75]{justify-content:center;text-align:center}}