.page-header[data-astro-cid-srloelyj]{background:var(--color-primary);color:#fff;padding:5rem 0}.page-header[data-astro-cid-srloelyj] h1[data-astro-cid-srloelyj]{color:#fff;font-size:3rem;margin-bottom:1rem}.subtitle[data-astro-cid-srloelyj]{font-size:1.2rem;color:#cbd5e0;max-width:700px;margin:0 auto}.content-layout[data-astro-cid-srloelyj]{display:grid;grid-template-columns:280px 1fr;gap:3rem;align-items:start}.toc-sidebar[data-astro-cid-srloelyj]{position:sticky;top:80px;display:flex;flex-direction:column;gap:1.5rem}.toc-card[data-astro-cid-srloelyj] h3[data-astro-cid-srloelyj],.guide-nav[data-astro-cid-srloelyj] h3[data-astro-cid-srloelyj]{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);margin-bottom:1rem;font-weight:700}.toc-list[data-astro-cid-srloelyj]{padding-left:1.25rem;margin:0;display:flex;flex-direction:column;gap:.5rem}.toc-list[data-astro-cid-srloelyj] a[data-astro-cid-srloelyj]{color:var(--color-text-muted);text-decoration:none;font-size:.9rem;transition:color .2s;line-height:1.4}.toc-list[data-astro-cid-srloelyj] a[data-astro-cid-srloelyj]:hover{color:var(--color-primary)}.guide-links[data-astro-cid-srloelyj]{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}.guide-links[data-astro-cid-srloelyj] a[data-astro-cid-srloelyj]{color:var(--color-primary);text-decoration:none;font-size:.9rem;font-weight:500;transition:opacity .2s}.guide-links[data-astro-cid-srloelyj] a[data-astro-cid-srloelyj]:hover{opacity:.75}.main-content[data-astro-cid-srloelyj]{min-width:0}.content-section[data-astro-cid-srloelyj]{margin-bottom:3.5rem;padding-bottom:3rem;border-bottom:1px solid var(--color-border)}.content-section[data-astro-cid-srloelyj]:last-of-type{border-bottom:none}.content-section[data-astro-cid-srloelyj] h2[data-astro-cid-srloelyj]{font-size:1.8rem;margin-bottom:1rem;color:var(--color-text)}.content-section[data-astro-cid-srloelyj] p[data-astro-cid-srloelyj]{color:var(--color-text-muted);line-height:1.75;margin-bottom:1rem}.callout[data-astro-cid-srloelyj]{padding:1.25rem 1.5rem;border-radius:var(--radius-md);margin:1.5rem 0;font-size:.95rem;line-height:1.6}.callout-info[data-astro-cid-srloelyj]{background:var(--color-secondary-light);border-left:4px solid var(--color-secondary);color:var(--color-text-muted)}.callout-warning[data-astro-cid-srloelyj]{background:#fffbeb;border-left:4px solid #D97706;color:#92400e}[data-astro-cid-srloelyj][data-theme=dark] .callout-warning[data-astro-cid-srloelyj]{background:#d977061a;color:#fcd34d}.chemistry-block[data-astro-cid-srloelyj]{display:grid;grid-template-columns:1fr auto 1fr;gap:1.5rem;align-items:center;background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;margin:1.5rem 0}.chem-divider[data-astro-cid-srloelyj]{font-size:1.5rem;text-align:center}.chem-label[data-astro-cid-srloelyj]{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:.25rem .75rem;border-radius:var(--radius-full);margin-bottom:.75rem}.chem-label[data-astro-cid-srloelyj].cathode{background:#dbeafe;color:#1e40af}.chem-label[data-astro-cid-srloelyj].anode{background:#fee2e2;color:#991b1b}.chem-side[data-astro-cid-srloelyj] p[data-astro-cid-srloelyj]{font-size:.9rem;margin:0;color:var(--color-text-muted)}.data-table-wrapper[data-astro-cid-srloelyj]{overflow-x:auto;margin:1.5rem 0}.data-table[data-astro-cid-srloelyj]{width:100%;border-collapse:collapse;font-size:.95rem}.data-table[data-astro-cid-srloelyj] th[data-astro-cid-srloelyj]{background:var(--color-primary);color:#fff;padding:.75rem 1rem;text-align:left;font-weight:600}.data-table[data-astro-cid-srloelyj] td[data-astro-cid-srloelyj]{padding:.75rem 1rem;border-bottom:1px solid var(--color-border);color:var(--color-text-muted)}.data-table[data-astro-cid-srloelyj] tr[data-astro-cid-srloelyj]:last-child td[data-astro-cid-srloelyj]{border-bottom:none}.data-table[data-astro-cid-srloelyj] tr[data-astro-cid-srloelyj]:nth-child(2n) td[data-astro-cid-srloelyj]{background:var(--color-background)}.type-grid[data-astro-cid-srloelyj]{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.25rem;margin:1.5rem 0}.type-card[data-astro-cid-srloelyj]{padding:1.5rem}.type-card[data-astro-cid-srloelyj] h3[data-astro-cid-srloelyj]{font-size:1rem;margin-bottom:.75rem}.type-card[data-astro-cid-srloelyj] p[data-astro-cid-srloelyj]{font-size:.9rem;margin-bottom:.5rem}.type-example[data-astro-cid-srloelyj]{font-size:.8rem;color:var(--color-primary);font-weight:600;margin-bottom:0!important}.comparison-blocks[data-astro-cid-srloelyj]{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin:1.5rem 0}.comparison-block[data-astro-cid-srloelyj]{padding:1.5rem;border-radius:var(--radius-lg);border:2px solid}.comparison-block[data-astro-cid-srloelyj].alkaline{border-color:#93c5fd;background:#eff6ff}.comparison-block[data-astro-cid-srloelyj].hydrogen{border-color:#6ee7b7;background:#ecfdf5}[data-astro-cid-srloelyj][data-theme=dark] .comparison-block[data-astro-cid-srloelyj].alkaline{background:#3b82f61a}[data-astro-cid-srloelyj][data-theme=dark] .comparison-block[data-astro-cid-srloelyj].hydrogen{background:#10b9811a}.comparison-block[data-astro-cid-srloelyj] h3[data-astro-cid-srloelyj]{font-size:1rem;margin-bottom:.75rem}.comparison-block[data-astro-cid-srloelyj] ul[data-astro-cid-srloelyj]{padding-left:1.25rem;margin:0}.comparison-block[data-astro-cid-srloelyj] li[data-astro-cid-srloelyj]{font-size:.9rem;color:var(--color-text-muted);margin-bottom:.4rem;line-height:1.5}.pros-cons-grid[data-astro-cid-srloelyj]{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin:1.5rem 0}.pros[data-astro-cid-srloelyj],.cons[data-astro-cid-srloelyj]{padding:1.5rem}.pros[data-astro-cid-srloelyj] h3[data-astro-cid-srloelyj],.cons[data-astro-cid-srloelyj] h3[data-astro-cid-srloelyj]{font-size:1rem;margin-bottom:1rem}.check-list[data-astro-cid-srloelyj],.x-list[data-astro-cid-srloelyj]{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}.check-list[data-astro-cid-srloelyj] li[data-astro-cid-srloelyj]:before{content:"✓ ";color:var(--color-success);font-weight:700}.x-list[data-astro-cid-srloelyj] li[data-astro-cid-srloelyj]:before{content:"✕ ";color:var(--color-error);font-weight:700}.check-list[data-astro-cid-srloelyj] li[data-astro-cid-srloelyj],.x-list[data-astro-cid-srloelyj] li[data-astro-cid-srloelyj]{font-size:.9rem;color:var(--color-text-muted);line-height:1.5}.styled-list[data-astro-cid-srloelyj]{padding-left:1.5rem;margin:1rem 0;display:flex;flex-direction:column;gap:.6rem}.styled-list[data-astro-cid-srloelyj] li[data-astro-cid-srloelyj]{color:var(--color-text-muted);line-height:1.6;font-size:.95rem}.myth-list[data-astro-cid-srloelyj]{display:flex;flex-direction:column;gap:1.5rem}.myth-item[data-astro-cid-srloelyj]{background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem}.myth-label[data-astro-cid-srloelyj],.fact-label[data-astro-cid-srloelyj]{display:inline-block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:.2rem .6rem;border-radius:var(--radius-full);margin-bottom:.4rem}.myth-label[data-astro-cid-srloelyj]{background:#fee2e2;color:#991b1b}.fact-label[data-astro-cid-srloelyj]{background:#dcfce7;color:#166534;margin-top:.75rem}.myth-item[data-astro-cid-srloelyj] p[data-astro-cid-srloelyj]{font-size:.95rem;color:var(--color-text-muted);margin:0 0 .25rem}.faq-list[data-astro-cid-srloelyj]{display:flex;flex-direction:column;gap:.75rem}.faq-item[data-astro-cid-srloelyj]{border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.faq-item[data-astro-cid-srloelyj] summary[data-astro-cid-srloelyj]{padding:1.25rem 1.5rem;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;color:var(--color-text)}.faq-item[data-astro-cid-srloelyj] summary[data-astro-cid-srloelyj]::-webkit-details-marker{display:none}.faq-item[data-astro-cid-srloelyj] summary[data-astro-cid-srloelyj]:after{content:"+";font-size:1.25rem;color:var(--color-primary);flex-shrink:0}.faq-item[data-astro-cid-srloelyj][open] summary[data-astro-cid-srloelyj]:after{content:"−"}.faq-item[data-astro-cid-srloelyj] p[data-astro-cid-srloelyj]{padding:0 1.5rem 1.25rem;color:var(--color-text-muted);line-height:1.7;margin:0;font-size:.95rem}.cta-block[data-astro-cid-srloelyj]{padding:2.5rem;text-align:center;margin-top:2rem}.cta-block[data-astro-cid-srloelyj] h2[data-astro-cid-srloelyj]{margin-bottom:.75rem}.cta-block[data-astro-cid-srloelyj] p[data-astro-cid-srloelyj]{color:var(--color-text-muted);margin-bottom:1.5rem}.cta-buttons[data-astro-cid-srloelyj]{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn[data-astro-cid-srloelyj]{padding:.75rem 1.75rem;border-radius:var(--radius-full);font-weight:600;text-decoration:none;transition:all .2s;display:inline-block}.btn-primary[data-astro-cid-srloelyj]{background:var(--color-primary);color:#fff}.btn-primary[data-astro-cid-srloelyj]:hover{background:var(--color-primary-light)}.btn-outline[data-astro-cid-srloelyj]{border:2px solid var(--color-primary);color:var(--color-primary)}.btn-outline[data-astro-cid-srloelyj]:hover{background:var(--color-primary);color:#fff}@media(max-width:1024px){.content-layout[data-astro-cid-srloelyj]{grid-template-columns:1fr}.toc-sidebar[data-astro-cid-srloelyj]{position:static}.toc-card[data-astro-cid-srloelyj]{display:none}}@media(max-width:640px){.comparison-blocks[data-astro-cid-srloelyj],.pros-cons-grid[data-astro-cid-srloelyj],.chemistry-block[data-astro-cid-srloelyj]{grid-template-columns:1fr}.chem-divider[data-astro-cid-srloelyj]{display:none}.page-header[data-astro-cid-srloelyj] h1[data-astro-cid-srloelyj]{font-size:2rem}}