:root { --preview-nav-offset: clamp(78px, 5.2rem, 128px); }
.essay-word-count,.library-word-count { white-space: nowrap; font-variant-numeric: tabular-nums; }
#home-view, body .library-view, body .reader-view { position: relative; z-index: 5; }
body:not([data-page="home"]) #home-view { display: none; }
body[data-page="article"] { overflow: hidden; }
/* Reading uses the full viewport; the shared header returns on leaving the article. */
body[data-page="article"] .site-nav { display: none; }
.nav-pill[aria-current="page"] { color: var(--cobalt); border-color: var(--line-strong); background: var(--bg-pill); }
/* Both page controls keep their layout slots: no reflow when the home control splits out. */
.site-nav {
  --nav-ease: cubic-bezier(.22, .8, .22, 1);
  --nav-split-time: 620ms;
  overflow: hidden;
}
.site-nav .nav-brand { flex-shrink: 0; }
.site-nav .nav-stage-indicator {
  position: absolute;
  left: 50%;
  max-width: calc(100% - 28rem);
  white-space: nowrap;
  transform: translate3d(-50%, 0, 0);
  opacity: 1;
  transition: opacity 260ms ease 110ms, transform var(--nav-split-time) var(--nav-ease);
}
.site-nav .nav-actions {
  position: relative;
  flex: 0 0 10.6rem;
  height: 2.25rem;
  margin-left: auto;
  gap: 0;
  isolation: isolate;
}
.site-nav .nav-pill {
  position: absolute;
  top: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.95rem;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform var(--nav-split-time) var(--nav-ease), opacity 260ms ease,
    color 360ms ease, border-color 360ms ease, background-color 360ms ease, box-shadow 360ms ease;
}
.site-nav .nav-documents-link {
  right: 0;
  z-index: 2;
  transform: translate3d(0rem, -50%, 0);
}
.site-nav .nav-home-link {
  right: 0;
  z-index: 1;
  width: 3.4rem;
  padding-inline: .8rem;
  opacity: 0;
  transform: translate3d(calc(100% + 1.125rem), -50%, 0) scale(.64, .84);
  transform-origin: right center;
  pointer-events: none;
  transition-delay: 0ms;
}
.site-nav[data-nav-page]:not([data-nav-page="home"]) .nav-stage-indicator {
  opacity: 0;
  transform: translate3d(-50%, -.55rem, 0);
  pointer-events: none;
  transition-delay: 0ms;
}
.site-nav[data-nav-page]:not([data-nav-page="home"]) .nav-documents-link {
  transform: translate3d(-3.95rem, -50%, 0);
  color: var(--cobalt);
  border-color: var(--line-strong);
  background: var(--bg-pill);
  box-shadow: 0 2px 9px rgba(24, 76, 219, .07);
}
.site-nav[data-nav-page]:not([data-nav-page="home"]) .nav-home-link {
  opacity: 1;
  transform: translate3d(0, -50%, 0) scale(1);
  pointer-events: auto;
  transition-delay: 65ms;
}
.site-nav .nav-pill:hover { color: var(--cobalt); background-color: var(--bg-pill); }
.site-nav .nav-pill:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 3px; }
.site-nav.nav-motion-immediate *, .site-nav.nav-motion-immediate { transition: none !important; }
/* Only library pages own scroll concealment; the home controller keeps its entrance. */
body:not([data-page="home"]) .site-nav[data-nav-page] {
  transform: translate3d(-50%, 0, 0) !important;
  transition: transform 560ms cubic-bezier(.4, 0, .2, 1);
}
body:not([data-page="home"]) .site-nav[data-nav-page][data-scroll-hidden="true"] {
  transform: translate3d(-50%, calc(-100% - 2rem), 0) !important;
  pointer-events: none;
  transition-duration: 460ms;
}
body:not([data-page="home"]) .site-nav[data-nav-page]:focus-within {
  transform: translate3d(-50%, 0, 0) !important;
  pointer-events: auto;
}
@media (max-width: 1120px) and (min-width: 961px) {
  .site-nav .nav-stage-indicator { gap: .1rem; font-size: .66rem; max-width: calc(100% - 25rem); }
  .site-nav .stage-step { padding-inline: .35rem; }
}
@media (max-width: 960px) {
  :root { --preview-nav-offset: calc(max(10px, env(safe-area-inset-top, 0px)) + 72px); }
  .site-nav { top: max(10px, env(safe-area-inset-top, 0px)); height: 60px; }
  .site-nav .nav-actions { height: 44px; }
  .site-nav .nav-pill { min-height: 44px; }
  .site-nav .nav-stage-indicator { display: none; }
}
@media (max-width: 520px) {
  .site-nav { padding-inline: .65rem; }
  .site-nav .nav-brand { gap: .4rem; font-size: .8rem; }
  .site-nav .brand-mark { width: 1.5rem; height: 1.5rem; font-size: .75rem; }
  .site-nav .nav-actions { flex-basis: 9.4rem; }
  .site-nav .nav-pill { padding-inline: .55rem; font-size: 12px; }
  .site-nav .nav-home-link { width: 3rem; min-width: 44px; transform: translate3d(calc(100% + .65rem), -50%, 0) scale(.64, .84); }
  .site-nav[data-nav-page]:not([data-nav-page="home"]) .nav-documents-link { transform: translate3d(-3.4rem, -50%, 0); }
}
.site-view:focus, #home-view:focus { outline: none; }
.reader-frame.is-preparing { position: absolute; inset: 0; visibility: hidden; pointer-events: none; }
#reader-view.is-preparing-view[hidden] { display: flex !important; position: fixed; inset: 0; visibility: hidden; pointer-events: none; z-index: -1; }
.route-loader.is-visible:focus { outline: none; }
@media (prefers-reduced-motion: reduce) {
  .site-view { scroll-behavior: auto; }
  .site-nav, .site-nav .nav-stage-indicator, .site-nav .nav-pill { transition: none !important; }
}