What changed, and when.

Performance, trust and content pass 13 September 2026

• NREMT480 questions edited so the longest option is no longer a tell. The correct answer was the longest option 54% of the time; it is now 30%, and the check that guards it only tightens. Keys and explanations are unchanged. One trauma question (the shock patient asking for water) had the wrong option set attached and now has the right one.
• NREMTNew About the exam page: adaptive format, the two-hour limit, cost, eligibility, retake rules and what to bring.
• NREMTA print or save as PDF button on exam results.
• SiteNew Sources page on who makes this and what the material is written against; it and this page are linked from every footer.
• SitePages paint much sooner: every script is deferred and the two typefaces are served from this site instead of a third party. Where that host is blocked a page used to sit blank for about fourteen seconds.
• SiteThe practice page no longer downloads the 1.2 MB explanation file until you start a session, and a site update no longer makes your device re-download the 3D body model and its viewer.
• SiteLight-mode secondary text now meets the WCAG AA contrast floor, focus rings are back on text inputs, and decorative icons are hidden from screen readers.
• OchemTools, Practice and Mastery now render their content without JavaScript, and the course is described as 62 topics everywhere instead of three different counts.

Layout pass 13 September 2026

• SiteThe "Clay" redesign: soft shadows, a course-tinted opener on every page, and progress you can see moving (the XP chip, level-up toast, bars filling on arrival).
• SiteOne page width across both courses, and shorter interface copy throughout.
• NREMTThe hub asks what you want to do instead of listing everything; the phone "More" sheet is hidden at desktop widths.
• OchemThe notes are a textbook with a contents rail; the course reads as a path; Mastery shows its two long lists side by side; practice modes with nothing in them were removed.

Tools, offline, and the checks that keep it honest 13 September 2026

• OchemSeven interactive tools with quizzes you have to ask for: arrow pusher, resonance explorer, 3D viewer, conformation lab, reaction predictor, acid/base comparator, spectroscopy lab. A molecule carries between tools, and the arrows say what they are.
• NREMTHeart sounds in the sound trainer, with an audio path that survives offline. Flow diagrams and skill sheets became drills rather than documents.
• SiteA real page when the URL is wrong or the network is gone; a link preview on every page; the sitemap is generated; a skip link on every page; answer feedback is announced to screen readers; the OS reduce-motion setting is respected site-wide.
• SiteProgress export and restore, and an analytics opt-out, on the privacy page. The question bank ships as two files so a question shows up sooner.
• SiteTests for the scoring engines and the tool content run on every change.

Study assistant and the ochem textbook 12 September 2026

• SiteA study assistant on every page of both courses. It answers by quoting the course's own material, and can optionally ask an AI model to write from those passages; it says why when it can't answer, and caches answers so a repeated question costs nothing.
• OchemEvery term's first appearance audited across all 62 sections; the textbook is searchable by its words, not just its section names; the periodic table is carried into the textbook.
• SiteOne design system instead of two drifting copies; a chime when an answer is right.

Earlier history is in the commit log.