Accessibility

Grothendieck House publishes books that are meant to be returned to — long-lived objects designed for unhurried reading. We hold the website to the same standard. Every reader should be able to use it.

The site aims to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA. We build with semantic HTML, sufficient color contrast on every section in our tonal journey, focusable controls, descriptive link text, and motion that respects the operating-system preference for reduced motion. Where any of these falls short, we treat it as a defect to fix.

Keyboard navigation reaches every interactive element. The mobile drawer opens with a single button, traps no focus, and closes on Escape. Tonal interpolation between sections preserves a minimum 4.5:1 contrast at every stop. Animations slow or disable themselves when a reader has requested reduced motion in their system settings. Cover images carry descriptive alt text. Hairlines and decorative figures are aria-hidden so screen readers reach the writing without interruption.

Our printed editions are set in legible type at generous leading. We are working toward making each title available in an EPUB edition with semantic structure suitable for screen readers, and in audio editions narrated by readers chosen for clarity. We do not put our titles behind app stores that exclude assistive technologies.

The hero of the homepage uses a parallax tilt that follows the cursor; on track-pad gestures this is subtle, but it remains motion. The pinned horizontal scroll on the Series section relies on vertical scroll position; on assistive technologies that do not translate scroll events well, the panels still reveal — but the horizontal animation does not. Where a feature degrades, we have aimed to keep the underlying content reachable.

If anything on the site is not usable for you — a control is unreachable, an image is unlabeled, contrast falls short, motion cannot be subdued — write to hello@grothendieckhouse.com. We treat accessibility reports the way we treat manuscript errata: as something to be fixed promptly.

WCAG 2.2 (W3C), Section 508 of the Rehabilitation Act, EN 301 549 (European Union). The site is tested against these standards before each release and after content updates.

Last reviewed: 21 May 2026.