Accessibility statement

What we implemented

• Semantic structure: navigation landmarks, ranked headings, tables with headers.
• Full keyboard navigation, with visible focus everywhere and a "Skip to content" link.
• AA contrast. The highlighter colours (chartreuse, amber) appear only as a background under dark text, never as coloured text.
• Information is not conveyed by colour alone: the difficulty map has a text label ("Difficult"), not just mark thickness.
• Motion stops at prefers-reduced-motion.
• Resizable text with no loss of content; the interface works on mobile.

Known limits

Courses are files uploaded by professors. The accessibility of each course's content depends on who wrote it; the platform cannot guarantee it on their behalf. The model course follows the same rules.