.lms-pdf { background:#fff; border:1px solid #E5E7EB; border-radius:12px; overflow:hidden; }
.lms-pdf-bar { display:flex; align-items:center; gap:10px; padding:8px 10px; background:#F9FAFB; border-bottom:1px solid #E5E7EB; }
.lms-pdf-nav { border:1px solid #E5E7EB; background:#fff; border-radius:8px; width:36px; height:32px; cursor:pointer; font-size:16px; }
.lms-pdf-nav:disabled { opacity:.35; cursor:default; }
.lms-pdf-label { flex:1; text-align:center; font-size:13px; font-weight:600; color:#374151; }
.lms-pdf-stage { background:#F3F4F6; padding:8px; }
.lms-pdf-stage canvas, .lms-pdf-iframe { display:block; width:100%; height:auto; background:#fff; }
.lms-pdf-iframe { min-height:70vh; border:0; }
.lms-pdf-caption { font-size:13px; color:#6B7280; padding:8px 12px 0; }
.lms-pdf-open { display:inline-block; font-size:12px; color:#4F46E5; padding:8px 12px 12px; text-decoration:none; }