:root { /* Compose a single reading column with inline diagrams and two native note treatments. */
  --type-base: 1.2rem;
  --lh-body: 1.62;
}

* { box-sizing: border-box; }

.tufte-container {
  display: block;
  max-width: 41rem;
  padding: 0 1.25rem 4rem;
}

.reading-nav {
  display: flex;
  flex-wrap: wrap;
  column-gap: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--paper-rule);
  font-family: var(--font-ui);
  font-size: 1rem;
}

.reading-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink-soft);
  text-decoration: none;
}

.reading-nav a[aria-current] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.35em;
}

.reading-article { padding: 2.25rem 0 0; }
.reading-header { margin-bottom: 2rem; }
.reading-article section { padding: 0; }

.reading-article h1 {
  font-size: clamp(2rem, 1.65rem + 1.8vw, 3rem);
  line-height: 1.13;
  margin: 0.65rem 0 1rem;
}

.reading-article h2 {
  font-size: 1.65rem;
  line-height: 1.24;
  margin: 2.5rem 0 1rem;
}

.reading-article h3 { font-size: 1.4rem; }
.reading-article :is(h1, h2, h3, p, li, a) { overflow-wrap: anywhere; }

.reading-article p {
  width: auto;
  max-width: none;
  margin: 0 0 1.15rem;
  text-align: start;
  text-align-last: auto;
}

.reading-article .reading-meta {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--ink-soft);
}

.reading-article .reading-description { color: var(--ink-soft); font-style: italic; }
.reading-article :is(ul, ol, dl) { width: auto; padding-inline-start: 1.4rem; margin-inline: 0; }
.reading-article blockquote { margin-inline: 0; }
.reading-article blockquote p { margin-right: 0; }
.reading-article :is(figure, pre, table) { max-width: 100%; }
.reading-article figure { width: 100%; }
.reading-article figcaption { float: none; max-width: none; }
.reading-article table { display: block; overflow-x: auto; }
.reading-article pre code { width: auto; margin: 0; }

.reading-article .marginnote {
  display: block;
  float: none;
  width: auto;
  min-width: 0;
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  background: var(--paper-deep);
  font-size: 1.05rem;
}

.reading-article .footnote { margin-top: 0; padding-top: 0; border: 0; }
.reading-article .footnote li { padding-inline-start: 0; font-size: 1.05rem; }
.reading-article .footnote li::before { left: -1.4rem; font-size: 1rem; }

.reading-article .footnote-ref {
  vertical-align: baseline;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  font-family: var(--font-ui);
  font-size: 0.85em;
  color: var(--accent-deep);
  text-decoration: underline;
}

.reading-article .footnote-back {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  min-height: 44px;
  margin: 0.5rem 0 1.5rem;
  color: var(--accent-deep);
  font-family: var(--font-ui);
}

:is(a, button, summary, [tabindex]):focus-visible { outline: 2px solid var(--accent-deep); outline-offset: 3px; }
:is(.footnote li, .footnote-ref):target { background: var(--paper-deep); }
[id] { scroll-margin-block: 1.5rem; }

.reading-skip {
  position: absolute;
  inset: 0 auto auto 1rem;
  transform: translateY(-150%);
  padding: 0.5rem 1rem;
  background: var(--paper);
}

.reading-skip:focus { transform: none; }

@media (max-width: 360px) {
  .tufte-container { padding-inline: 1rem; }
  .reading-nav { column-gap: 1rem; }
}