/* Tetri’s Smile · house ads (v41) Our own promotion on our own site: a photograph, a panel laid over its edge, a hairline ring behind the panel and four registration crosses at the corners of the plate (Arthur's boards: the navy panel over a photograph, the thin orbit lines, the corner marks). Clinic units carry a night panel; pediatric units a daylight one. Each skin speaks its own language: Signature navy with a rim of light and pill buttons, Quiet white paper with a grayscale photograph that takes its colour under the pointer, Frost slate and ice with mono labels and a cool duotone, Lumen black and white with light falling through the dark. Markup (written at build time, never by script): see v41/v41src/fixtures/ads/ads_render.py and the round contract.