.pdf-viewer-wrap { border: 1px solid #dee2e6; border-radius: 8px; overflow: hidden; margin-bottom: 1.5rem; }
.pdf-viewer-header { background: #f8f9fa; border-bottom: 1px solid #dee2e6; padding: .5rem 1rem; display: flex; justify-content: space-between; align-items: center; }
.pdf-viewer-frame { width: 100%; height: 700px; border: none; display: block; }
@media (max-width: 768px) { .pdf-viewer-frame { height: 480px; } }