/* PDF 预览阅读器：仅缩放 / 适应宽度 / 翻页，无打印、保存、下载按钮 */
.pdf-viewer {
  border: 1px solid var(--line, #dde3ea);
  border-radius: 10px;
  background: #2f343c;
  overflow: hidden;
  margin-top: 16px;
}
.pv-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: #262b33;
  color: #e6e9ee;
  position: sticky;
  top: 0;
  z-index: 5;
}
.pv-btn {
  background: #3b424d;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  min-width: 30px;
}
.pv-btn:hover { background: #4b5461; }
.pv-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.pv-btn:disabled:hover { background: #3b424d; }
.pv-zoom {
  min-width: 56px;
  text-align: center;
  font-size: 13px;
  color: #cfd4dc;
  font-variant-numeric: tabular-nums;
}
.pv-sep { width: 1px; height: 18px; background: #4a525f; margin: 0 4px; }
.pv-page {
  margin-left: auto;
  font-size: 12px;
  color: #b9c0ca;
  font-variant-numeric: tabular-nums;
}
.pv-pages {
  padding: 12px 14px;
  overflow: auto;
  max-height: 780px;
  background: #2f343c;
}
.pv-sheet {
  text-align: center;
  margin: 0 auto 12px;
}
.pv-canvas {
  display: block;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}
.pv-status {
  padding: 12px;
  text-align: center;
  color: #b9c0ca;
  font-size: 13px;
  background: #2f343c;
}
.pv-status.error { color: #ff8a80; }