/* Three edited lessons share the existing quiet reading surface. */
.single .entry-content .bf-article-pilot {
  min-width: 0;
  max-width: 100%;
  color: var(--bf-ink);
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
.single .entry-content .bf-article-pilot [id] { scroll-margin-top: 112px; }
.single .entry-content .bf-article-pilot p { margin: 0 0 20px; }
.single .entry-content .bf-article-pilot .bf-pilot-lead { font-size: 18px; line-height: 1.85; }
.single .entry-content .bf-article-pilot h2 { margin: 48px 0 20px; padding: 0; border: 0; font-size: 26px; line-height: 1.45; font-weight: 700; }
.single .entry-content .bf-article-pilot h3 { margin: 32px 0 16px; padding: 0; border: 0; font-size: 21px; line-height: 1.5; font-weight: 700; }
.single .entry-content .bf-article-pilot h4 { margin: 24px 0 12px; font-size: 18px; line-height: 1.6; font-weight: 500; }
.single .entry-content .bf-article-pilot strong { font-weight: 700; }
.single .entry-content .bf-pilot-summary { margin: 0 0 24px; padding: 24px; background: var(--bf-soft); }
.single .entry-content .bf-article-pilot .bf-pilot-summary > h2,
.single .entry-content .bf-article-pilot .bf-pilot-toc > h2 { margin: 0 0 12px; font-size: 18px; font-weight: 700; line-height: 1.5; }
.single .entry-content .bf-article-pilot .bf-pilot-summary > p { margin: 0; font-size: inherit; line-height: 1.8; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] { overflow-wrap: anywhere; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] > h2 { margin: 0 0 12px; padding: 0; border: 0; font-size: 18px; font-weight: 700; line-height: 1.5; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] > p { margin: 0; line-height: 1.8; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] > .summary-text { margin: 0; font-size: inherit; line-height: 1.8; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] > p + p { margin-top: 12px; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] > .bf-aeo-scope,
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] > .bf-aeo-sources { font-size: 14px; line-height: 1.8; }
.single .entry-content .bf-pilot-summary[data-bf-aeo-article] a:focus-visible { outline: 2px solid var(--bf-ink); outline-offset: 3px; }
.single .entry-content .bf-pilot-toc { margin: 0 0 40px; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.single .entry-content .bf-pilot-toc :is(ul, ol) { margin: 0; padding-left: 22px; }
.single .entry-content .bf-pilot-toc li { margin: 0; }
.single .entry-content .bf-pilot-toc a { display: inline-flex; align-items: center; min-height: 44px; padding: 4px 0; box-sizing: border-box; }
.single .entry-content .bf-article-pilot :is(a, summary):focus-visible { outline: 2px solid var(--bf-ink); outline-offset: 3px; }
.single .entry-content .bf-article-pilot :is(.bf-pilot-flow, .bf-pilot-figure) { max-width: 100%; margin: 28px 0; }
.single .entry-content .bf-pilot-flow { padding: 20px 24px; background: var(--bf-soft); }
.single .entry-content .bf-pilot-flow ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px 32px; margin: 0; padding-left: 22px; }
.single .entry-content .bf-pilot-flow li { min-width: 0; margin: 0; padding: 0; }
.single .entry-content .bf-pilot-flow li :is(strong, span, code) { display: block; }
.single .entry-content .bf-pilot-flow figcaption { margin: 16px 0 0; font-size: 14px; color: var(--bf-muted); line-height: 1.75; }
.single .entry-content .bf-pilot-figure img { display: block; max-width: 100%; width: auto; max-height: 320px; margin-inline: auto; object-fit: contain; }
.single .entry-content .bf-pilot-figure figcaption { margin-top: 12px; font-size: 14px; line-height: 1.75; color: var(--bf-muted); }
.single .entry-content .bf-article-pilot .bf-table-scroll { margin: 24px 0 32px; }
.single .entry-content .bf-article-pilot table { font-size: 15px; line-height: 1.75; }
.single .entry-content .bf-article-pilot caption { padding: 0 0 12px; color: var(--bf-muted); text-align: left; font-size: 14px; line-height: 1.7; }
.single .entry-content .bf-article-pilot :is(th, td) { padding: 12px 14px; vertical-align: top; }
.single .entry-content .bf-article-pilot #odd-trace + p + .bf-pilot-table table {
  width: 100%;
  min-width: 0;
  table-layout: fixed;
}
.single .entry-content .bf-article-pilot #odd-trace + p + .bf-pilot-table :is(th, td) {
  min-width: 0;
  padding: 10px 6px;
  font-size: 14px;
}
.single .entry-content .bf-article-pilot pre { max-width: 100%; box-sizing: border-box; margin: 20px 0 24px; overflow-x: auto; }
.single .entry-content .bf-article-pilot pre code { font-size: 14px; line-height: 1.75; white-space: pre; overflow-wrap: normal; word-break: normal; }
/* WordPress already inserts paragraphs and br tags into the protected problem text. */
.single .entry-content .bf-article-pilot :is(.hb-algorithm-problem-original, .hb-algorithm-constraints-original) {
  white-space: normal !important;
  font-size: inherit;
  line-height: inherit;
}
.single .entry-content .bf-pilot-details { min-width: 0; margin: 28px 0; padding: 0 20px; border: 1px solid var(--bf-line); border-radius: 0; background: transparent; box-shadow: none; }
.single .entry-content .bf-pilot-details > summary { min-height: 48px; padding: 12px 0; box-sizing: border-box; cursor: pointer; color: var(--bf-ink); font-size: 16px; font-weight: 500; line-height: 1.6; }
.single .entry-content .bf-pilot-details[open] { padding-bottom: 20px; }
.single .entry-content .bf-pilot-details > :last-child { margin-bottom: 0; }
.single .entry-content .bf-pilot-details h2:first-of-type { margin-top: 20px; }
/* Answer-first is an explicit opt-in on these three revised articles. */
.single .entry-content .bf-article-answer-first > h2:first-of-type { margin-top: 24px; }
.single .entry-content .bf-article-answer-first section.bftp-solutions {
  margin: 24px 0 32px;
  padding: 0;
  border: 0;
}
.single .entry-content .bf-article-answer-first section.bftp-solutions > h2:first-child { margin-top: 0; }
.single .entry-content .bf-article-answer-first .bftp-practice-disclosure #bf-triangle-practice { margin-top: 12px; }
/* A single button lesson stays separate from the optional course project. */
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] { margin: 20px 0 28px; padding: 0; border: 0; background: transparent; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__header { margin: 0 0 16px; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__description { font-size: 16px; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__controls { padding: 0; background: transparent; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__status:empty { display: none; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__footer { margin-top: 8px; gap: 0; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__status { margin: 0; padding: 0; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__viewport { margin-top: 12px; }
.single .entry-content .bf-article-simple-practice .bf-demo[data-simple-practice="true"] .bf-demo__frame { height: 188px; }
/* Reviewed articles use the same single action, retaining each preview's normal height. */
.single .entry-content .bf-article-reader .bf-demo[data-simple-practice="true"] { margin: 20px 0 28px; padding: 0; border: 0; background: transparent; }
.single .entry-content .bf-article-reader .bf-demo[data-simple-practice="true"] .bf-demo__header { margin: 0 0 16px; }
.single .entry-content .bf-article-reader .bf-demo[data-simple-practice="true"] .bf-demo__controls { padding: 0; background: transparent; }
.single .entry-content .bf-article-reader .bf-demo[data-simple-practice="true"] .bf-demo__status:empty { display: none; }
.single .entry-content .bf-article-reader .bf-demo[data-simple-practice="true"] .bf-demo__viewport { margin-top: 12px; }
.single .entry-content .bf-article-reader .bf-reader-example > h2:first-child { margin-top: 0; }
.single .entry-content .bf-article-reader .bf-reader-project { margin-block: 36px; }
.single .entry-content .bf-article-reader .bf-reader-introduction { margin-top: 36px; }
.single .entry-content .bf-article-reader :is(h2, h3) { overflow-wrap: anywhere; }
@media (max-width: 640px) {
  .single .entry-content .bf-article-pilot { font-size: 16px; }
  .single .entry-content .bf-article-pilot .bf-pilot-lead { font-size: 17px; }
  .single .entry-content .bf-article-pilot h2 { margin-top: 36px; font-size: 23px; }
  .single .entry-content .bf-article-pilot h3 { font-size: 20px; }
  .single .entry-content .bf-pilot-summary { padding: 20px; }
  .single .entry-content .bf-pilot-flow { padding: 20px; }
  .single .entry-content .bf-pilot-flow ol { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .single .entry-content .bf-pilot-details { padding-inline: 12px; }
}

/* Related CSS lessons keep the article open while the lab opens in a new tab. */
.single .entry-content .bf-layout-practice {
  box-sizing: border-box;
  min-width: 0;
  max-width: 100%;
  margin: 0 0 28px;
  padding: 20px;
  border: 1px solid var(--bf-line, #d9dde3);
  color: var(--bf-ink, #20252c);
  overflow-wrap: anywhere;
}
.single .entry-content .bf-layout-practice p { margin: 0 0 12px; font-size: 16px; line-height: 1.75; }
.single .entry-content .bf-layout-practice .bf-layout-practice__title { font-weight: 700; }
.single .entry-content .bf-layout-practice__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; }
.single .entry-content .bf-layout-practice__actions a { display: inline-flex; align-items: center; justify-content: center; box-sizing: border-box; min-width: 0; min-height: 44px; padding: 8px 14px; font-size: 16px; font-weight: 500; line-height: 1.6; text-align: center; }
.single .entry-content .bf-layout-practice__actions .bf-layout-practice__primary { background: var(--bf-ink, #20252c); color: #fff; text-decoration: none; }
.single .entry-content .bf-layout-practice__actions .bf-layout-practice__secondary { color: inherit; text-decoration: underline; text-underline-offset: 0.2em; }
.single .entry-content .bf-layout-practice a:focus-visible { outline: 2px solid var(--bf-ink, #20252c); outline-offset: 3px; }
.single .entry-content .bf-layout-practice .bf-layout-practice__note { margin: 12px 0 0; color: var(--bf-muted, #545d69); font-size: 14px; line-height: 1.7; }
@media (max-width: 480px) {
  .single .entry-content .bf-layout-practice { padding: 16px; }
  .single .entry-content .bf-layout-practice__actions { flex-direction: column; align-items: stretch; }
}