/* V29: native reading navigation. No new page scroll controller. */
:root { --case-reader-offset: 88px; }
.case-reader {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 18px;
  width: var(--shell);
  margin: 0 auto 16px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  box-shadow: 0 -1px 0 var(--ink), 0 10px 18px -16px #000;
}
.case-reader .case-outline {
  flex: 1;
  min-width: 0;
  width: auto;
  margin: 0;
  padding: 4px 2px;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.case-reader .case-outline a {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 13px;
  white-space: nowrap;
}
.case-reader .case-outline a[aria-current="location"] {
  border-color: var(--signal);
  background: rgba(202,255,50,.08);
  color: var(--signal);
}
.case-reader-return {
  display: inline-flex;
  min-height: 44px;
  flex: 0 0 auto;
  align-items: center;
  padding-inline: 4px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}
.case-reader-return:hover { color: var(--signal); }
.case-section, .case-example { scroll-margin-top: var(--case-reader-offset); }
/* Keep keyboard location visible without outlining several screens of text. */
.case-section:focus-visible, .case-example:focus-visible { outline: none; }
.case-section:focus-visible h2, .case-example:focus-visible h3 {
  outline: 2px solid var(--signal);
  outline-offset: 8px;
}
.case-at-a-glance [data-case-jump] {
  align-self: start;
  color: var(--signal);
  font-size: 13px;
  font-weight: 800;
  text-decoration-line: underline;
  text-decoration-color: rgba(202,255,50,.35);
  text-underline-offset: 4px;
}
.case-at-a-glance [data-case-jump]:hover { text-decoration-color: currentColor; }
@media (max-width: 640px) {
  .case-reader { gap: 10px; }
  .case-reader .case-outline a { padding-inline: 12px; }
  .case-reader-return { font-size: 12px; }
}
@media print {
  .case-reader { position: static; }
  .case-reader .case-outline { flex-wrap: wrap; overflow: visible; }
}