.append-article .append-summary { padding: 18px 20px; border-left: 5px solid #006afc; border-radius: 12px; background: #eef5ff; margin: 20px 0; }
.append-article .join-demo { background: #f5f8ff; border: 1px solid #ccdafa; padding: 22px; border-radius: 16px; margin: 20px 0 30px; }
.append-article .join-demo label { display: block; margin: 12px 0 8px; font-weight: 600; }
.append-article .join-demo input[type="text"], .append-article .join-demo textarea { width: 100%; max-width: 100%; box-sizing: border-box; border: 1px solid #9bafd8; border-radius: 9px; padding: 12px; font: inherit; background: white; color: #172740; }
.append-article .join-demo textarea { resize: vertical; min-height: 90px; }
.append-article .append-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.append-article .append-actions button { border: 1px solid #7695d8; padding: 11px 14px; background: #fff; color: #173e8d; border-radius: 9px; font: inherit; font-weight: 600; cursor: pointer; }
.append-article .append-actions button:hover { background: #e7f0ff; }
.append-article .append-actions button.append-primary { background: #1555c2; border-color: #1555c2; color: #fff; }
.append-article .append-actions button:disabled { opacity: .55; cursor: not-allowed; }
.append-article button:focus-visible, .append-article input:focus-visible, .append-article textarea:focus-visible { outline: 3px solid #e3ab15; outline-offset: 3px; }
.append-article .append-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0; }
.append-article .append-item { border: 1px solid #b6ccef; background: #fff; border-radius: 10px; padding: 10px 12px; max-width: 100%; overflow-wrap: anywhere; }
.append-article .append-item:last-child { border-color: #26a466; background: #ecfcf2; }
.append-article .append-item small { display: block; color: #42526b; margin-bottom: 4px; }
.append-article .append-hint, .append-article .append-simulation-note { color: #46556e; font-size: .92rem; line-height: 1.6; }
.append-article .join-demo pre { white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; max-width: 100%; }
.append-article .append-ok { color: #176b39; font-weight: 600; }
.append-article .append-error { color: #b0271e; font-weight: 600; }
.append-article .join-demo [role="status"] { min-height: 1.5em; overflow-wrap: anywhere; }
@media (max-width: 600px) { .append-article .join-demo { padding: 16px 12px; } .append-article .append-actions button { min-height: 44px; } .append-article .hero-image img { height: auto; } }