.article-header--heizung[data-astro-cid-awvl5i2f]{background:linear-gradient(135deg,#431407,#7c2d12,#c2410c);color:#fff;padding:4rem 0}.article-header--heizung[data-astro-cid-awvl5i2f] .article-meta[data-astro-cid-awvl5i2f]{display:flex;gap:1rem;align-items:center;margin-bottom:1rem;font-size:var(--text-sm);opacity:.85}.article-header--heizung[data-astro-cid-awvl5i2f] h1[data-astro-cid-awvl5i2f]{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;line-height:1.2;margin-bottom:1rem}.article-subtitle[data-astro-cid-awvl5i2f]{font-size:var(--text-lg);opacity:.9;max-width:780px}.article-container[data-astro-cid-awvl5i2f]{display:grid;grid-template-columns:260px 1fr;gap:3rem;padding:3rem 0 4rem;align-items:start}.article-toc[data-astro-cid-awvl5i2f]{position:sticky;top:2rem;background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-xl);padding:1.25rem}.article-toc[data-astro-cid-awvl5i2f] h3[data-astro-cid-awvl5i2f]{font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);margin:0 0 .75rem}.article-toc[data-astro-cid-awvl5i2f] ul[data-astro-cid-awvl5i2f]{list-style:none;padding:0;margin:0;display:grid;gap:.25rem}.article-toc[data-astro-cid-awvl5i2f] a[data-astro-cid-awvl5i2f]{color:var(--color-text-muted);text-decoration:none;font-size:var(--text-sm);padding:.35rem .45rem;display:block}.article-content[data-astro-cid-awvl5i2f]{max-width:820px}.article-content[data-astro-cid-awvl5i2f] section[data-astro-cid-awvl5i2f]{margin-bottom:2.75rem}.article-content[data-astro-cid-awvl5i2f] h2[data-astro-cid-awvl5i2f]{font-size:var(--text-2xl);margin-bottom:1rem}.article-content[data-astro-cid-awvl5i2f] h3[data-astro-cid-awvl5i2f]{font-size:var(--text-lg)}.article-content[data-astro-cid-awvl5i2f] p[data-astro-cid-awvl5i2f],.article-content[data-astro-cid-awvl5i2f] li[data-astro-cid-awvl5i2f]{line-height:1.75}.article-content[data-astro-cid-awvl5i2f] ul[data-astro-cid-awvl5i2f]{padding-left:1.4rem}.info-box[data-astro-cid-awvl5i2f]{background:var(--color-bg-alt);border-left:4px solid #ea580c;border-radius:var(--radius-lg);padding:1.5rem}.info-box--highlight[data-astro-cid-awvl5i2f]{background:linear-gradient(135deg,#f973161a,#ea580c0a)}.info-box[data-astro-cid-awvl5i2f] h2[data-astro-cid-awvl5i2f]{margin-top:0}.cost-table-wrapper[data-astro-cid-awvl5i2f]{overflow-x:auto;margin:1.5rem 0;border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg)}.cost-table[data-astro-cid-awvl5i2f]{width:100%;border-collapse:collapse;font-size:var(--text-sm)}.cost-table[data-astro-cid-awvl5i2f] th[data-astro-cid-awvl5i2f],.cost-table[data-astro-cid-awvl5i2f] td[data-astro-cid-awvl5i2f]{padding:.65rem .8rem;border-bottom:1px solid var(--color-border-subtle);text-align:left;white-space:nowrap}.cost-table[data-astro-cid-awvl5i2f] th[data-astro-cid-awvl5i2f]{background:var(--color-bg-alt);font-size:var(--text-xs);text-transform:uppercase}.highlight-row[data-astro-cid-awvl5i2f] td[data-astro-cid-awvl5i2f]{background:#f9731614;font-weight:600}.table-note[data-astro-cid-awvl5i2f],.source-note[data-astro-cid-awvl5i2f]{font-size:var(--text-sm);color:var(--color-text-muted);line-height:1.7}.formula-box[data-astro-cid-awvl5i2f]{background:#fff7ed;border:1px solid #fed7aa;border-radius:var(--radius-md);padding:1rem;margin-top:1rem}.feature-grid[data-astro-cid-awvl5i2f],.vergleich-grid[data-astro-cid-awvl5i2f]{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin:1.5rem 0}.feature-card[data-astro-cid-awvl5i2f],.vergleich-card[data-astro-cid-awvl5i2f]{background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);padding:1.25rem}.feature-card[data-astro-cid-awvl5i2f] h3[data-astro-cid-awvl5i2f],.vergleich-card[data-astro-cid-awvl5i2f] h3[data-astro-cid-awvl5i2f]{margin:0 0 .5rem;font-size:var(--text-base)}.feature-card[data-astro-cid-awvl5i2f] p[data-astro-cid-awvl5i2f],.vergleich-card[data-astro-cid-awvl5i2f] p[data-astro-cid-awvl5i2f]{font-size:var(--text-sm)}.vergleich-card--infrarot[data-astro-cid-awvl5i2f]{background:#f973160f;border-color:#f973164d}.vergleich-card--gas[data-astro-cid-awvl5i2f]{background:var(--color-bg-alt)}.source-note[data-astro-cid-awvl5i2f]{border-top:1px solid var(--color-border-subtle);padding-top:1.5rem}.faq-list[data-astro-cid-awvl5i2f]{display:grid;gap:.5rem}.faq-item[data-astro-cid-awvl5i2f]{background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);overflow:hidden}.faq-item[data-astro-cid-awvl5i2f] summary[data-astro-cid-awvl5i2f]{padding:1rem 1.25rem;font-weight:600;cursor:pointer;list-style:none}.faq-item[data-astro-cid-awvl5i2f] summary[data-astro-cid-awvl5i2f]::-webkit-details-marker{display:none}.faq-item[data-astro-cid-awvl5i2f] p[data-astro-cid-awvl5i2f]{padding:0 1.25rem 1rem;margin:0;font-size:var(--text-sm);color:var(--color-text-muted)}.btn-amazon[data-astro-cid-awvl5i2f]{display:inline-block;padding:.7rem 1.2rem;background:linear-gradient(135deg,#f90,#f80);color:#fff;border-radius:var(--radius-md);text-decoration:none;font-weight:600;font-size:var(--text-sm)}.btn-small[data-astro-cid-awvl5i2f]{display:inline-block;padding:.5rem .9rem;border-radius:var(--radius-md);text-decoration:none;font-size:var(--text-xs);font-weight:600}.btn-outline[data-astro-cid-awvl5i2f]{border:1px solid var(--color-primary);color:var(--color-primary)}.cta-box[data-astro-cid-awvl5i2f]{background:linear-gradient(135deg,#431407,#7c2d12);color:#fff;border-radius:var(--radius-2xl);padding:2.5rem;text-align:center}.cta-box[data-astro-cid-awvl5i2f] h2[data-astro-cid-awvl5i2f]{color:#fff}.cta-box[data-astro-cid-awvl5i2f] p[data-astro-cid-awvl5i2f]{color:#fff;opacity:.85}.cta-box[data-astro-cid-awvl5i2f] .btn[data-astro-cid-awvl5i2f]{display:inline-block;padding:.8rem 1.5rem;border-radius:var(--radius-lg);text-decoration:none;font-weight:700;margin:.35rem}.btn-primary[data-astro-cid-awvl5i2f]{background:#fff;color:#431407}.btn-secondary[data-astro-cid-awvl5i2f]{color:#fff;background:#ffffff26;border:1px solid rgba(255,255,255,.3)}.badge-heizung[data-astro-cid-awvl5i2f]{background:#fff3;color:#fff;padding:.25rem .75rem;border-radius:999px;font-size:var(--text-xs);font-weight:600}@media(max-width:1024px){.article-container[data-astro-cid-awvl5i2f]{grid-template-columns:1fr}.article-toc[data-astro-cid-awvl5i2f]{position:static}}@media(max-width:640px){.feature-grid[data-astro-cid-awvl5i2f],.vergleich-grid[data-astro-cid-awvl5i2f]{grid-template-columns:1fr}.cta-box[data-astro-cid-awvl5i2f]{padding:1.5rem}}