/* Only the dedicated USDT iframe page; document pages retain their TOC. */
main:has(> .custom-page-layout iframe[src="/usdt/"]) { padding: 0 !important; }
.custom-page-layout:has(iframe[src="/usdt/"]) {
  height: calc(100dvh - 64px) !important;
  min-height: 0 !important;
}
.custom-page-layout:has(iframe[src="/usdt/"]) > .card {
  border: 0 !important; border-radius: 0 !important; box-shadow: none !important;
}
.custom-page-layout:has(iframe[src="/usdt/"]) .toc-sidebar,
.custom-page-layout:has(iframe[src="/usdt/"]) .toc-toggle-btn { display: none !important; }
.custom-page-layout:has(iframe[src="/usdt/"]) .markdown-page-content {
  padding: 0 !important; overflow: hidden !important; min-width: 0;
}
.custom-page-layout:has(iframe[src="/usdt/"]) .markdown-page-content > p:has(> iframe) {
  height: 100%; margin: 0 !important;
}
.custom-page-layout iframe[src="/usdt/"] {
  width: 100% !important; height: 100% !important;
  min-height: 0 !important; border-radius: 0 !important; margin: 0 !important;
}