Next sale · Thursday, September 17, 2026
Register to bid
An identity check and a bidding limit, so that every number in the room belongs to someone who can pay it. Registration closes at 6 p.m. the evening before the sale.
Next sale · Thursday, September 17, 2026
An identity check and a bidding limit, so that every number in the room belongs to someone who can pay it. Registration closes at 6 p.m. the evening before the sale.
Paint chips
Six schemes, each checked for text contrast in both the light and the dark theme. The green, amber, red and blue announcement lights never change — they mean something.
Cabin controls
Reduce motion starts from your operating system setting and stops the beam field, the lift animation and every scroll-driven reveal. These are real controls, not a badge — this site has not been audited for WCAG conformance and does not claim it.
Gate slip · what this site stores
Crossblock is a design demonstration. It sets no analytics, no advertising and no tracking cookies, because there are none to set. If you accept, four preferences are kept in this browser's localStorage: your theme, your paint chip, your cabin controls and the fact that you answered this. Decline and nothing is written — the site still works, it just forgets your choices when you leave.
Rebrand this demo
Flip paint stops
Link and button colours are derived from stop one and nudged until they clear 4.5:1 on the ground they actually sit on, so a pale choice cannot produce unreadable text.