
BIDDING · 6 MIN
What the light actually means
Green, amber and red are not a rating. They are a statement about what you can dispute afterwards.
4 notes
The things a first-time bidder finds out too late, written down before the hammer instead.

BIDDING · 6 MIN
Green, amber and red are not a rating. They are a statement about what you can dispute afterwards.

CONDITION · 7 MIN
The grade is the least informative number on the page. Here is the order to read it in.

SELLING · 5 MIN
A reserve protects you from a bad room. It also tells the room you expect one.

BIDDING · 4 MIN
Work backwards from what you can spend, not forwards from what you bid.
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.