/* Article reading layout. Shared site chrome and publication metadata stay intact. */
.reading-article {
  --reading-measure: 65ch;
  --reading-space: 1.25rem;
}
.reading-article .article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  max-width: 78rem;
  padding-block: 2.5rem 4rem;
}
.reading-article .article-layout > * { min-width: 0; }
.reading-article .article-header,
.reading-article .article-summary,
.reading-article .article-body,
.reading-article .series-navigation,
.reading-article .signup { width: 100%; max-width: 46rem; }
.reading-article .article-header { padding: 0 0 2rem; }
.reading-article .article-header h1 {
  font-family: var(--f-inst);
  font-size: clamp(2.5rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.02em;
  max-width: 27ch;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}
.reading-article .article-header .lede {
  font-size: 1.1875rem;
  line-height: 1.6;
  max-width: var(--reading-measure);
  margin: 0 0 1.25rem;
}
.reading-article .series-position { font-size: 1rem; line-height: 1.5; margin: 0 0 .75rem; }
.reading-article .article-byline { font-size: .875rem; margin: 0; gap: .75rem; }
.reading-article .article-byline .chip { font-family: var(--f-body); font-size: inherit; letter-spacing: 0; }
.article-summary {
  background: var(--accent-soft);
  color: var(--ink);
  border-block: 1px solid var(--accent);
  padding: 1.5rem 1.75rem;
  margin: 0 0 2.5rem;
  font-family: var(--f-body);
}
.article-summary h2 {
  font-family: var(--f-inst);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: none;
  margin: 0 0 1rem;
}
.article-summary ul { margin: 0; padding-inline-start: 1.25rem; }
.article-summary li { font-size: 1rem; line-height: 1.65; margin: 0 0 .75rem; max-width: 65ch; }
.article-summary li:last-child { margin-bottom: 0; }
.article-summary li::marker { color: var(--accent); }
.reading-article .article-contents {
  border-block: 1px solid var(--line-strong);
  padding-block: 1.25rem;
  max-width: 46rem;
  margin-bottom: 2.5rem;
}
.reading-article .article-contents h2 {
  font-family: var(--f-inst);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  text-transform: none;
  margin: 0 0 .75rem;
}
.reading-article .article-contents ol { list-style: none; margin: 0 0 1.25rem; padding: 0; }
.reading-article .article-contents li { margin: 0; }
.reading-article .article-contents a { display: inline-block; font-size: .9375rem; line-height: 1.5; padding-block: .375rem; }
.reading-article .article-contents p { margin: .25rem 0 0; }
.reading-article .article-body { padding: 0; font-size: 1.125rem; line-height: 1.75; }
.reading-article .article-body .measure { max-width: none; min-width: 0; }
.reading-article .article-body p,
.reading-article .article-body li { max-width: var(--reading-measure); }
.reading-article .article-body p { overflow-wrap: break-word; margin: 0 0 var(--reading-space); }
.reading-article .article-body h2,
.reading-article .article-body h3 {
  font-family: var(--f-inst);
  letter-spacing: 0;
  text-transform: none;
  text-wrap: balance;
  scroll-margin-top: 2rem;
}
.reading-article .article-body h2 {
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.2;
  max-width: 35ch;
  margin: 3rem 0 1rem;
}
.reading-article .article-body h3 { font-size: 1.5rem; line-height: 1.3; font-weight: 600; margin: 2rem 0 .75rem; }
.reading-article .article-body ul,
.reading-article .article-body ol { padding-inline-start: 1.5rem; margin: 0 0 1.5rem; }
.reading-article .article-body li { margin-bottom: .75rem; }
.reading-article .article-body strong { font-weight: 700; }
.reading-article .article-body a { text-decoration-thickness: 1px; text-underline-offset: .2em; }
.reading-article .article-body a:hover { text-decoration-thickness: 2px; }
.reading-article .article-cover { max-width: 35rem; margin: 2rem auto 3rem; }
.reading-article .article-cover .cover-placeholder { border: 1px solid var(--line); padding: 0; }
.reading-article .article-body .measure img { display: block; width: 100%; height: auto; margin: 2.5rem auto; }
.reading-article .article-diagram { margin: 2.5rem 0; }
.reading-article .article-body .article-diagram img { margin: 0; }
.reading-article .article-diagram figcaption { margin-top: .75rem; font-size: 1rem; line-height: 1.5; }
.reading-article .article-callout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 1.5rem;
  margin: 2rem 0;
}
.reading-article .article-callout h3 { margin-top: 0; }
.reading-article .article-callout > :last-child { margin-bottom: 0; }
.reading-article .article-keypoint {
  font-size: 1.25rem;
  line-height: 1.55;
  margin-block: 2rem;
  max-width: 55ch;
}
.reading-article .article-body .planned-note,
.reading-article .article-body p:has(> em:only-child) { font-size: 1rem; color: var(--muted); }
.reading-article .article-body .planned-note { font-style: italic; }
.reading-article .article-table {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  margin: 1.5rem 0;
  scrollbar-color: var(--line-strong) var(--panel);
}
.reading-article .article-body .article-table table {
  width: 100%;
  min-width: 34rem;
  table-layout: auto;
  border-collapse: collapse;
  font-family: var(--f-body);
  font-size: 1rem;
  line-height: 1.6;
}
.reading-article .article-body .article-table th,
.reading-article .article-body .article-table td {
  padding: .875rem 1rem;
  text-align: left;
  vertical-align: top;
  overflow-wrap: normal;
  border-bottom: 1px solid var(--line);
}
.reading-article .article-body .article-table th { color: var(--ink); font-weight: 700; background: var(--panel); }
.reading-article .article-body .article-table code { white-space: normal; overflow-wrap: normal; font-size: .9375em; }
.reading-article .article-body pre { max-width: 100%; overflow-x: auto; white-space: pre; font-size: .875rem; line-height: 1.65; padding: 1.25rem; }
.reading-article .video-leg { max-width: none; margin-top: 3rem; padding-top: 1.5rem; scroll-margin-top: 2rem; }
.reading-article .series-navigation { margin: 3rem 0 0; padding-block: 1.5rem; }
.reading-article .signup { margin: 2.5rem 0 0; }
.reading-article .article-layout a:focus-visible,
.reading-article .article-table:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.reading-article main ::selection { background: var(--accent); color: var(--on-accent); }
/* The reading list is the next action; the large system diagram follows it. */
.series-guide .series-opening { padding-bottom: 2.5rem; }
.series-guide .article-summary { margin-top: 1.75rem; margin-bottom: 1.5rem; }
.series-guide .series-contents { grid-row: 2; }
.series-guide .series-system { grid-row: 3; }
.series-guide .series-ending { grid-row: 4; }
@media (min-width: 1080px) {
  .reading-article .article-layout { grid-template-columns: minmax(0, 46rem) minmax(12rem, 15rem); column-gap: 3.5rem; }
  .reading-article .article-header,
  .reading-article .article-summary,
  .reading-article .article-body,
  .reading-article .series-navigation,
  .reading-article .signup,
  .reading-article .article-notes,
  .reading-article .article-extras { grid-column: 1; }
  .reading-article .article-contents {
    grid-column: 2;
    grid-row: 1 / span 5;
    align-self: start;
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    margin: 0;
  }
}
@media (max-width: 1079px) {
  .reading-article .article-layout { max-width: 51.5rem; }
  .reading-article .article-contents li a { padding-block: .5rem; }
}
@media (max-width: 760px) {
  .series-guide .series-contents { order: 1; }
  .series-guide .series-system { order: 2; }
}
@media (max-width: 600px) {
  .reading-article .article-layout { padding-block: 1.5rem 3rem; }
  .reading-article .article-header { padding-bottom: 1.5rem; }
  .reading-article .article-header h1 { font-size: 2.5rem; }
  .reading-article .article-header .lede { font-size: 1.125rem; }
  .article-summary { padding: 1.25rem; margin-bottom: 2rem; }
  .reading-article .article-body { font-size: 1.0625rem; line-height: 1.75; }
  .reading-article .article-body h2 { font-size: 1.75rem; margin-top: 2.5rem; }
  .reading-article .article-cover { margin-block: 1.75rem 2.5rem; }
  .reading-article .article-diagram { margin: 2.5rem 0; }
  .reading-article .article-body .article-diagram img { margin: 0; }
  .reading-article .article-diagram figcaption { margin-top: .75rem; font-size: 1rem; line-height: 1.5; }
  .reading-article .article-callout { padding: 1rem; }
  .reading-article .article-keypoint { font-size: 1.1875rem; }
  .reading-article .article-table::before { content: 'Scroll table horizontally to read all columns'; display: block; position: sticky; left: 0; font-size: .875rem; line-height: 1.5; color: var(--muted); margin-bottom: .75rem; }
}
@media print {
  .reading-article .article-contents,
  .reading-article .signup { display: none; }
  .reading-article .article-table { overflow: visible; }
  .reading-article .article-body .article-table table { min-width: 0; }
}

.reading-article .article-body .article-table th,
.reading-article .article-body .article-table td { font-family: var(--f-body); letter-spacing: normal; text-transform: none; }
.reading-article .article-notes, .reading-article .article-extras { max-width: 46rem; min-width: 0; margin-top: 2rem; }
.reading-article .article-notes .railcard .rk { font-family: var(--f-body); font-size: 1rem; letter-spacing: 0; text-transform: none; }
.reading-article .article-notes .railcard p { font-style: normal; font-size: 1rem; line-height: 1.6; }
.reading-article .article-cover img { display: block; width: 100%; height: auto; }

.reading-article .article-layout > .draft-banner { grid-column: 1; max-width: 46rem; width: 100%; margin: 0 0 1.5rem; }
.reading-article .article-cover .cover-placeholder:not(.has-cover) { padding: 1rem; }