/* R198 css/extras.css · 词云/粒子等扩展 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:12px 0}
.tag-cloud-item{padding:4px 10px;border-radius:999px;background:var(--card);border:1px solid var(--border)}
.hero-particles{z-index:0}
.hidden-mobile{display:block}
@media(max-width:767px){.hidden-mobile{display:none}}
.ai-talk-section{margin-bottom:16px}
.talk-output{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;font-size:14px;line-height:1.7;margin:12px 0;white-space:pre-wrap}
.export-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:10px}
.export-grid .btn{font-size:12px;padding:10px 8px}
.editor-editable{outline:1px dashed var(--accent);outline-offset:2px;border-radius:4px}