- Gallery .section-head now uses the same 1400px container + 1.5rem
horizontal padding as .masonry-grid, so 'PHOTO GALLERY' / 'A look inside'
align flush with the leftmost image edge (24px gutter) instead of sitting
at the very left of the page.
- .pricing-section and .contact-section are now constrained to
max-width: 1200px and centered (matching .floors-section and .lage-section),
so the 'Mietkonditionen' (dark) and 'Kontakt' (cream) blocks no longer
span the full viewport.
- Mobile: matching padding adjustment for the new .section-head rule at
width <= 768px.
