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(max-width:860px){.ncert-adoption-highlights{grid-template-columns:1fr}}.ncert-highlight-box{border-radius:var(--radius-lg);background:#fff;border:1px solid #e2e8f0;padding:1.5rem;box-shadow:0 2px 6px #00000008}.ncert-highlight-box h4{color:var(--color-text-main);align-items:center;gap:.5rem;margin:0 0 .5rem;font-size:1.05rem;font-weight:700;display:flex}.ncert-highlight-box p{color:#475569;margin:0;font-size:.88rem;line-height:1.6}.ncert-faq-wrap{width:100%;margin:4.5rem 0 3rem}.ncert-faq-accordion-list{flex-direction:column;gap:1rem;width:100%;max-width:920px;margin:0 auto;display:flex}.ncert-faq-item{border:1px solid var(--color-border-light,#e2e8f0);background:#fff;border-radius:1.15rem;transition:border-color .25s,box-shadow .25s,transform .25s;overflow:hidden;box-shadow:0 2px 8px #0f172a08}.ncert-faq-item:hover{border-color:var(--brand-primary);box-shadow:0 8px 20px -4px #6366f114,0 2px 6px #00000005}.ncert-faq-item[open]{border-color:var(--color-primary,var(--brand-primary));box-shadow:0 12px 28px -6px #6366f11f,0 4px 10px -2px #0f172a08}.ncert-faq-trigger{cursor:pointer;-webkit-user-select:none;user-select:none;background:0 0;outline:none;align-items:center;gap:1.15rem;padding:1.25rem 1.5rem;list-style:none;transition:background-color .2s;display:flex}.ncert-faq-trigger::-webkit-details-marker{display:none}.ncert-faq-trigger::marker{display:none}.ncert-faq-trigger:hover{background-color:#6366f106}.ncert-faq-trigger:focus-visible{outline:2px solid var(--color-primary,var(--brand-primary));outline-offset:-2px}.ncert-faq-badge-num{width:2.35rem;height:2.35rem;color:var(--color-primary,var(--brand-primary));letter-spacing:-.01em;background:#f1f5f9;border-radius:.75rem;flex-shrink:0;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;transition:background .25s,color .25s,box-shadow .25s;display:inline-flex}.ncert-faq-item[open] .ncert-faq-badge-num{background:linear-gradient(135deg, var(--color-primary,#6366f1) 0%, var(--brand-primary) 100%);color:#fff;box-shadow:0 4px 12px #6366f159}.ncert-faq-question{color:var(--color-text-main,#000);letter-spacing:-.01em;text-align:left;flex:1;margin:0;font-size:1.05rem;font-weight:600;line-height:1.45;transition:color .2s}.ncert-faq-item[open] .ncert-faq-question{color:var(--color-primary,var(--brand-primary))}.ncert-faq-chevron{color:#64748b;background:#f8fafc;border:1px solid #e2e8f0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:2.15rem;height:2.15rem;transition:transform .3s cubic-bezier(.16,1,.3,1),background-color .2s,color .2s,border-color .2s;display:inline-flex}.ncert-faq-item:hover .ncert-faq-chevron{color:var(--color-primary,var(--brand-primary));background:#f1f5f9;border-color:#6366f14d}.ncert-faq-item[open] 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(max-width:820px){.ncert-faq-grid{grid-template-columns:1fr}}.ncert-faq-card{border:1px solid var(--color-border-light);border-radius:var(--radius-lg);background:#fff;padding:1.5rem;box-shadow:0 2px 8px #00000005}.ncert-faq-q{color:var(--color-text-main);margin:0 0 .6rem;font-size:1.05rem;font-weight:700;line-height:1.35}.ncert-faq-a{color:#475569;margin:0;font-size:.9rem;line-height:1.6}.subject-hub-hero{background:linear-gradient(135deg, var(--color-dark-bg) 0%, var(--color-dark-surface) 100%);color:#fff;padding:calc(var(--header-height) + 2rem) 0 3.5rem 0;border-bottom:1px solid #ffffff14}.chapter-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,320px),1fr));gap:1.5rem;display:grid}@media (max-width:640px){.chapter-grid{grid-template-columns:1fr;gap:1.25rem}.chapter-card{padding:1.35rem 1.15rem}}.chapter-card{background:var(--color-surface-white);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);transition:all 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var(--color-border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);box-sizing:border-box;min-width:0;padding:1.5rem;position:sticky;overflow-y:auto}.chapter-reader-sidebar h4{text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-subtle);margin:0 0 1rem;font-size:.78rem;font-weight:800}.chapter-content-body{background:var(--color-surface-white);border:1px solid var(--color-border-light);border-radius:var(--radius-xl);box-shadow:var(--shadow-xs);color:var(--color-text-body);box-sizing:border-box;word-break:break-word;overflow-wrap:break-word;width:100%;min-width:0;max-width:100%;padding:2.75rem 2.5rem;line-height:1.8;overflow-x:hidden}.chapter-content-body h2{font-family:var(--font-heading);color:var(--color-text-main);border-bottom:2px solid var(--color-border-subtle);word-break:break-word;overflow-wrap:break-word;margin:2.2rem 0 1rem;padding-bottom:.5rem;font-size:1.7rem;font-weight:800}.chapter-content-body h3{font-family:var(--font-heading);color:#1e293b;word-break:break-word;overflow-wrap:break-word;margin:1.75rem 0 .75rem;font-size:1.3rem;font-weight:700}.chapter-content-body h4{font-family:var(--font-heading);color:#334155;word-break:break-word;overflow-wrap:break-word;margin:1.5rem 0 .5rem;font-size:1.1rem;font-weight:700}.chapter-content-body p{word-break:break-word;overflow-wrap:break-word;margin-bottom:1.25rem;font-size:1.05rem}.chapter-content-body ul,.chapter-content-body ol{box-sizing:border-box;margin:1rem 0 1.25rem;padding-left:1.5rem}.chapter-content-body li{word-break:break-word;overflow-wrap:break-word;margin-bottom:.5rem;font-size:1rem;line-height:1.7}.chapter-content-body img{border-radius:var(--radius-md);max-width:100%;height:auto;margin:1.5rem 0}.chapter-content-body pre,.chapter-content-body code{word-break:break-word;-webkit-overflow-scrolling:touch!important;max-width:100%!important;overflow-x:auto!important}.chapter-content-body 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li{color:#334155;margin-bottom:0;padding-left:1.75rem;font-size:1rem;line-height:1.65;position:relative}.key-takeaways-list li:before{content:"✓";color:#059669;font-size:1.1rem;font-weight:800;position:absolute;top:0;left:0}.edu-table-responsive,.table-responsive{border:1px solid #e2e8f0;border-radius:10px;box-shadow:0 1px 4px #00000005;-webkit-overflow-scrolling:touch!important;box-sizing:border-box!important;width:100%!important;max-width:100%!important;margin:1.75rem 0!important;overflow-x:auto!important}.edu-table{border-collapse:collapse;text-align:left;background:#fff;width:100%;font-size:.95rem}.edu-table th{color:#1e293b;white-space:nowrap;background:#f1f5f9;border-bottom:2px solid #cbd5e1;padding:.9rem 1.15rem;font-weight:700}.edu-table td{color:#334155;vertical-align:middle;border-bottom:1px solid #e2e8f0;padding:.85rem 1.15rem}.edu-table tr:last-child td{border-bottom:none}.edu-table tr:hover td{background:#f8fafc}.chapter-content-body 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