iframe.web-office-iframe,
iframe#office-iframe {
  border: 0 !important;
}

/*
 * The teaching page keeps the WPS iframe fixed at z-index: 0.  Its native
 * completion dialog is rendered inside the same content container without a
 * stacking level, so the iframe otherwise captures clicks on the dialog's
 * confirm/cancel buttons.  Keep only those fixed in-page dialogs above WPS.
 */
.site-layout-background > div > div[style*="position: fixed"] {
  z-index: 2 !important;
}

.kxydy-annotation-canvas {
  position: fixed;
  inset: auto;
  z-index: 900;
  pointer-events: none;
  touch-action: none;
}

.kxydy-annotation-canvas.is-drawing {
  cursor: crosshair;
  pointer-events: auto;
}

.kxydy-annotation-toolbar {
  align-items: center;
  background: rgba(21, 24, 31, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
  display: flex;
  gap: 6px;
  padding: 6px;
  position: fixed;
  z-index: 901;
}

.kxydy-annotation-toolbar button {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  font: 600 14px/1 Arial, "Microsoft YaHei", sans-serif;
  height: 32px;
  justify-content: center;
  min-width: 32px;
  padding: 0 9px;
}

.kxydy-annotation-toolbar button:hover {
  background: rgba(255, 255, 255, 0.16);
}

.kxydy-annotation-toolbar button.is-active {
  background: #1677ff;
  border-color: #1677ff;
}

.kxydy-annotation-color {
  border-radius: 999px !important;
  min-width: 24px !important;
  padding: 0 !important;
  width: 24px;
}

.kxydy-annotation-color[data-color="#ff3b30"] {
  background: #ff3b30;
}

.kxydy-annotation-color[data-color="#1677ff"] {
  background: #1677ff;
}

.kxydy-annotation-color[data-color="#20c997"] {
  background: #20c997;
}

.kxydy-annotation-color[data-color="#ffd43b"] {
  background: #ffd43b;
}

.kxydy-annotation-size {
  accent-color: #1677ff;
  width: 72px;
}

.kxydy-annotation-separator {
  background: rgba(255, 255, 255, 0.2);
  height: 24px;
  width: 1px;
}

.kxydy-annotation-hidden {
  display: none;
}

.kxydy-resource-preview {
  align-items: center;
  background: #f5f7fa;
  display: flex;
  inset: 0;
  justify-content: center;
  overflow: hidden;
  position: absolute;
  z-index: 2147482000;
}

.kxydy-resource-preview-image {
  height: 100%;
  object-fit: contain;
  user-select: none;
  width: 100%;
}

.kxydy-resource-preview-video {
  background: #111;
  height: 100%;
  object-fit: contain;
  width: 100%;
}

.kxydy-resource-preview-scratch {
  background: #000;
  border: 0;
  display: block;
  height: 100%;
  width: 100%;
}

.kxydy-resource-preview-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
  color: #334155;
  max-width: 560px;
  padding: 30px 34px;
  text-align: left;
  width: calc(100% - 64px);
}

.kxydy-resource-preview-card.is-error {
  border-color: #fecaca;
  color: #991b1b;
}

.kxydy-resource-preview-header {
  align-items: center;
  color: #0f172a;
  display: flex;
  font: 600 18px/1.5 Arial, "Microsoft YaHei", sans-serif;
  gap: 12px;
  margin-bottom: 18px;
}

.kxydy-resource-preview-badge {
  background: #1677ff;
  border-radius: 6px;
  color: #fff;
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 5px 8px;
}

.kxydy-resource-preview-card.is-error .kxydy-resource-preview-badge {
  background: #dc2626;
}

.kxydy-resource-preview-card p {
  font: 15px/1.8 Arial, "Microsoft YaHei", sans-serif;
  margin: 0;
}

.kxydy-resource-preview-audio {
  margin-top: 8px;
  width: 100%;
}

.kxydy-resource-manager-button {
  background: #1677ff;
  border: 0;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(22, 119, 255, 0.24);
  color: #fff;
  cursor: pointer;
  font: 600 14px/1 Arial, "Microsoft YaHei", sans-serif;
  padding: 11px 16px;
  position: fixed;
  right: 20px;
  top: 84px;
  z-index: 2147481800;
}

.kxydy-resource-manager-backdrop {
  align-items: center;
  background: rgba(15, 23, 42, 0.48);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: 24px;
  position: fixed;
  z-index: 2147483000;
}

.kxydy-resource-manager-hidden {
  display: none !important;
}

.kxydy-resource-manager-panel {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 24px 72px rgba(15, 23, 42, 0.28);
  color: #0f172a;
  max-height: min(720px, calc(100vh - 48px));
  max-width: 820px;
  overflow: auto;
  padding: 24px;
  width: 100%;
}

.kxydy-resource-manager-header {
  align-items: flex-start;
  display: flex;
  gap: 20px;
  justify-content: space-between;
}

.kxydy-resource-manager-header h2 {
  font: 700 22px/1.35 Arial, "Microsoft YaHei", sans-serif;
  margin: 0;
}

.kxydy-resource-manager-header p {
  color: #64748b;
  font: 14px/1.7 Arial, "Microsoft YaHei", sans-serif;
  margin: 6px 0 0;
}

.kxydy-resource-manager-close {
  background: transparent;
  border: 0;
  color: #64748b;
  cursor: pointer;
  font: 28px/1 Arial, sans-serif;
  padding: 0 4px;
}

.kxydy-resource-manager-controls {
  align-items: center;
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.kxydy-resource-manager-controls select {
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 7px;
  color: #0f172a;
  font: 14px/1.2 Arial, "Microsoft YaHei", sans-serif;
  min-width: 180px;
  padding: 9px 34px 9px 10px;
}

.kxydy-resource-manager-upload {
  background: #1677ff;
  border-radius: 7px;
  color: #fff;
  cursor: pointer;
  font: 600 14px/1.2 Arial, "Microsoft YaHei", sans-serif;
  padding: 10px 15px;
}

.kxydy-resource-manager-upload.is-busy {
  cursor: wait;
  opacity: 0.62;
  pointer-events: none;
}

.kxydy-resource-manager-status {
  color: #475569;
  font: 14px/1.5 Arial, "Microsoft YaHei", sans-serif;
  min-height: 21px;
  padding: 14px 0 8px;
}

.kxydy-resource-manager-status.is-success {
  color: #15803d;
}

.kxydy-resource-manager-status.is-error {
  color: #b91c1c;
}

.kxydy-resource-manager-list {
  border-top: 1px solid #e2e8f0;
}

.kxydy-resource-manager-row {
  align-items: center;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 14px 2px;
}

.kxydy-resource-manager-meta {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.kxydy-resource-manager-meta strong {
  font: 600 15px/1.4 Arial, "Microsoft YaHei", sans-serif;
  overflow-wrap: anywhere;
}

.kxydy-resource-manager-meta span {
  color: #64748b;
  font: 12px/1.5 Arial, "Microsoft YaHei", sans-serif;
}

.kxydy-resource-manager-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.kxydy-resource-manager-actions button {
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  color: #334155;
  cursor: pointer;
  font: 13px/1 Arial, "Microsoft YaHei", sans-serif;
  padding: 7px 10px;
}

.kxydy-resource-manager-actions button.is-danger {
  border-color: #fecaca;
  color: #b91c1c;
}

@media (max-width: 768px) {
  .kxydy-annotation-toolbar {
    bottom: 12px !important;
    left: 50% !important;
    max-width: calc(100vw - 24px);
    overflow-x: auto;
    right: auto !important;
    top: auto !important;
    transform: translateX(-50%);
  }

  .kxydy-resource-preview-card {
    padding: 22px;
    width: calc(100% - 32px);
  }

  .kxydy-resource-manager-button {
    right: 12px;
    top: 76px;
  }

  .kxydy-resource-manager-backdrop {
    padding: 12px;
  }

  .kxydy-resource-manager-panel {
    max-height: calc(100vh - 24px);
    padding: 18px;
  }

  .kxydy-resource-manager-row {
    align-items: flex-start;
    flex-direction: column;
  }
}