One tile, one glyph, one index. Every cover is the same frame with the glyph and the words swapped, so a channel page of eight playlists reads as one shelf rather than eight decisions. The glyph is a Phosphor icon from the system's own subset — never a stock illustration, never an emoji — set large and low-contrast in the corner, because it is a marker, not the content.

The subscribe glyph baked into the corner of every video. It is the mark alone on transparency — a watermark with a wordmark in it is unreadable at the size it renders, and a watermark with a background is a sticker.

The row under the banner. Four destinations, in this order, and the site first — the others are places to follow, the site is the place to learn.

GLYPHS

Phosphor, from the shipped subset onlyThe same family that sets every icon in the product. A cover using an icon the site does not have is a cover that cannot be rebuilt later.

WATERMARK

150 × 150 PNG, transparent, mark onlyBottom-right, ~70% opacity, on for the whole video rather than the last ten seconds — a clipped moment travels without a title.

COVERS

1280 × 720, index top-left, glyph top-rightSame frame every time. Vary the glyph and the words; never the layout, the pattern scale or the accent bar.

NEVER

Emoji, stock icons, or a second accent colourBrand blue is the only saturated colour on the shelf. A row of covers in eight different hues is eight brands.