/* Manual ads stay outside learning activities and the app promotion. */
.manual-ad[hidden]{display:none!important}
.article-page .manual-ad{width:100%;min-width:0;margin:40px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.manual-ad-label{display:block;margin:0 0 12px;text-align:center;font-size:10px;line-height:1.5;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.manual-ad-content{width:100%;min-width:0}
.manual-ad-demo{box-sizing:border-box;display:flex;min-height:250px;align-items:center;justify-content:center;flex-direction:column;gap:10px;padding:24px;border:1px dashed #cbd5e1;border-radius:12px;background:#f8fafc;text-align:center;color:#64748b}
.manual-ad-demo strong{font-size:18px;line-height:1.5;color:#475569;font-weight:600}
.manual-ad-demo span{font-size:12px;line-height:1.6;max-width:290px}
.manual-ad-demo small{font-size:11px;line-height:1.6}
.manual-ad .adsbygoogle{display:block;width:100%;min-height:250px}
@media(max-width:580px){.article-page .manual-ad{margin:32px 0;padding:18px 0}.manual-ad-demo{padding:20px}.manual-ad-demo strong{font-size:16px}}
@media print{.manual-ad{display:none!important}}