/* 2026-09-26 · 专题艺术版；保留原有学习功能与存储键。 */
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/* 学习对话：角色来源明确，按问题展开。 */
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.conversation-step summary{display:grid;grid-template-columns:32px 1fr 24px;gap:15px;padding:23px 0;list-style:none;font-size:16px;line-height:1.7;cursor:pointer;align-items:start}.conversation-step summary::-webkit-details-marker{display:none}.conversation-step summary::after{display:none}.conversation-number{font:italic 18px/1.6 Georgia,serif;color:#728369}.conversation-toggle{font-size:17px;transition:transform .2s}.conversation-step[open] .conversation-toggle{transform:rotate(45deg)}
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@media(prefers-reduced-motion:reduce){.conversation-toggle{transition:none}}