/* Scoped assistant evidence and truthful operation status; no shared styles. */
.activity-stream { gap: 12px; }
.activity-stream__head { align-items: flex-start; }
.activity-stream__head > i { margin-block-start: 5px; }
.activity-stream__head strong { font-size: 13px; line-height: 1.8; }
.activity-stream__head small { white-space: normal; line-height: 1.9; font-size: 11px; }
.activity-stream__stages { padding: 0; gap: 7px; }
.activity-stream__stages:empty { display: none; }
.activity-stream__stages li { font-size: 11px; line-height: 1.9; }
.activity-stream__stages li.is-reported { color: var(--muted); }
.assistant-evidence-cards { display: grid; gap: 12px; margin-block: 14px; }
.assistant-evidence-card { display: grid; overflow: hidden; min-width: 0; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.assistant-evidence-card__body { padding: 14px 16px; min-width: 0; }
.assistant-evidence-card__source { display: block; color: var(--muted); font-size: 10px; line-height: 1.8; }
.assistant-evidence-card h3 { margin: 4px 0 8px; font-size: 15px; line-height: 1.8; }
.assistant-evidence-card h3 a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.assistant-evidence-card p { margin: 0; font-size: 13px; line-height: 2.1; }
.message__content .assistant-evidence-card .assistant-evidence-card__summary.is-collapsed { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 4; overflow: hidden; }
.message__content .assistant-evidence-card .assistant-evidence-card__toggle { display: inline-flex; align-items: center; min-height: 36px; margin-block-start: 6px; padding: 4px 0; background: none; color: var(--ink); font-size: 11px; font-weight: 700; line-height: 1.8; text-decoration: underline; text-underline-offset: 4px; }
.message__content .assistant-evidence-card .assistant-evidence-card__toggle:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 3px; }
.assistant-evidence-card__attribution { margin-block-start: 12px; padding-block-start: 10px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; line-height: 1.9; overflow-wrap: anywhere; }
.assistant-evidence-card__figure { margin: 0; min-width: 0; }
.message__content .assistant-evidence-card__figure img { display: block; margin: 0; width: 100%; height: auto; aspect-ratio: 16 / 10; max-height: 250px; object-fit: cover; border-radius: 0; }
.assistant-evidence-card figcaption { padding: 8px 14px; background: var(--surface-soft); color: var(--muted); font-size: 9px; line-height: 1.9; overflow-wrap: anywhere; }
@media (min-width: 640px) {
  .assistant-evidence-card:has(.assistant-evidence-card__figure) { grid-template-columns: 190px minmax(0, 1fr); }
  .message__content .assistant-evidence-card__figure img { height: 170px; max-height: none; }
}
.assistant-prose-chunk { animation: assistantProseReveal 150ms ease-out both; animation-delay: var(--reveal-delay, 0ms); }
@keyframes assistantProseReveal { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .assistant-prose-chunk { animation: none; opacity: 1; }
}