/* Reading density changes text, spacing and measure together; navigation controls retain their usable size. */
body[data-reader-size] { --reader-font: 17.5px; --reader-width: 660px; --reader-heading-min: 22px; --reader-heading-max: 30px; }
body[data-reader-size="90"] { --reader-font: 15.75px; --reader-width: 594px; --reader-heading-min: 19.8px; --reader-heading-max: 27px; }
body[data-reader-size="120"] { --reader-font: 21px; --reader-width: 792px; --reader-heading-min: 26.4px; --reader-heading-max: 36px; }
body[data-reader-size] .reading-width { max-width: var(--reader-width); }
body[data-reader-size] .prose { font-size: var(--reader-font); }
body[data-reader-size] .prose h2 { font-size: clamp(var(--reader-heading-min), 2.4vw, var(--reader-heading-max)); scroll-margin-top: 110px; flex-wrap: wrap; }
.reader-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 16px; margin-block: 24px 12px; font-family: var(--sans-cn); font-size: 14px; }
.reader-controls[hidden] { display: none; }
.reader-controls button { min-height: 44px; min-width: 56px; padding: 8px 12px; border: 1px solid var(--hairline-soft); background: transparent; color: var(--ivory); font: inherit; cursor: pointer; }
.reader-controls button[aria-pressed="true"] { border-color: var(--gold); color: var(--gold); }
.reader-controls button:focus-visible, .reading-sections :is(summary,a):focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.reader-status { font-family: var(--sans-cn); font-size: 14px; line-height: 1.7; color: var(--muted); }
.reader-status:empty { display: none; }
.reading-sections { margin-block: 16px 0; border-block: 1px solid var(--hairline-soft); font-family: var(--sans-cn); font-size: 14px; }
.reading-sections > summary { cursor: pointer; min-height: 52px; padding-block: 14px; line-height: 1.7; color: var(--ivory); }
.reading-sections ol { margin: 0; padding: 0 0 12px; list-style: none; }
.reading-sections a { display: flex; align-items: center; min-height: 44px; padding-block: 8px; line-height: 1.7; color: var(--muted); text-decoration: none; overflow-wrap: anywhere; }
.reading-sections a:hover { color: var(--gold); text-decoration: underline; text-underline-offset: 4px; }
body[data-reader-size] .toc { left: calc(50% + var(--reader-width) / 2 + 40px); }
@media (min-width: 1380px) { .reading-sections.has-desktop-toc { display: none; } }
@media print { .reader-controls, .reader-status, .reading-sections, .toc { display: none !important; } }