/* 海报设计教练（2026-10-02 对话出图）：只保留对话里海报图片的样式。 */
.md figure.poster-image{margin:14px 0 10px;max-width:min(420px,100%);border:1px solid #e9e9ec;border-radius:16px;overflow:hidden;background:#f7f7f8}
.md figure.poster-image img{display:block;width:100%;height:auto;max-height:720px;object-fit:contain;cursor:zoom-in}
.md figure.poster-image figcaption{display:flex;gap:8px;padding:10px 12px}
.poster-image-action{border:1px solid #e0e2e6;background:#fff;color:#2b3542;border-radius:9px;padding:8px 12px;min-height:36px;text-decoration:none;font:inherit;font-size:13px;cursor:pointer}