::highlight(conversation-source) { background: color-mix(in srgb, var(--color-brand) 35%, transparent); text-decoration: underline; text-decoration-color: var(--color-brand); } [data-chat-message-id][data-analysis-available] { border-radius: var(--radius-md); transition: background-color var(--duration-fast) var(--ease-out); } [data-chat-message-id][data-analysis-available]:hover { background: var(--color-hover); }