/* Cover text uses a crisp depth edge plus a visible, offset photographic shadow. */
.home-page {
  --intro-text-shadow: 0 1px 0 #02070d, 0 2px 1px rgba(0, 0, 0, .98),
    1px 4px 4px rgba(0, 0, 0, .95), 0 8px 14px rgba(0, 0, 0, .85);
}
/* A photographic cover; only this viewport-sized layer moves during switching. */
.home-intro {
  --intro-control-fill: rgba(8, 21, 32, .36);
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  min-height: 100svh;
  padding: clamp(28px, 4vw, 54px) var(--page-gutter);
  overflow: hidden;
  background: var(--dark);
  color: #fff;
}
.home-intro-image, .home-intro::after {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
.home-intro-image { object-fit: cover; object-position: center; }
.home-intro::after {
  content: "";
  pointer-events: none;
  background: linear-gradient(180deg, rgba(4, 14, 24, .52), transparent 30%, rgba(4, 14, 24, .12) 48%, rgba(4, 14, 24, .88)),
    linear-gradient(90deg, rgba(4, 14, 24, .38), rgba(4, 14, 24, .08) 58%, transparent);
}
.home-intro-top { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; }
.home-intro-logo {
  font-family: var(--peiran-journal-logo-font-family, "Times New Roman", Georgia, serif);
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.025em;
}
.home-intro-name { font-size: .75rem; letter-spacing: .05em; }
.home-intro-copy { position: absolute; left: var(--page-gutter); right: var(--page-gutter); bottom: clamp(184px, 22svh, 248px); }
.home-intro-copy h2 {
  max-width: 22ch;
  margin: 0 0 clamp(18px, 2.5svh, 28px);
  font-family: var(--nature-serif);
  font-size: clamp(2.1rem, 4.4vw, 4.4rem);
  line-height: 1.12;
  font-weight: 400;
  letter-spacing: -.02em;
  text-wrap: balance;
  color: #fffdf8;
  text-shadow: 0 1px 0 #02070d, 0 2px 0 rgba(0, 0, 0, .95),
    0 3px 1px rgba(0, 0, 0, .9), 2px 6px 6px rgba(0, 0, 0, .9),
    0 14px 28px rgba(0, 0, 0, .7);
}
.home-intro-eyebrow { margin: 0; max-width: 60ch; color: #edf2f5; font-size: clamp(.75rem, 1vw, .875rem); font-weight: 500; line-height: 1.85; letter-spacing: .08em; text-wrap: pretty; }
.home-intro-eyebrow span { display: inline-block; margin: 0 12px; opacity: .55; }
.home-intro-enter {
  position: absolute;
  left: 50%;
  bottom: calc(64px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(255,255,255,.65);
  background: var(--intro-control-fill);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 6px 20px rgba(0,0,0,.22);
  border-radius: 50%;
  color: #fff;
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease;
}
.home-intro-enter span { position: absolute; top: 64px; font-size: .7rem; font-weight: 400; letter-spacing: .12em; white-space: nowrap; }
.home-intro-enter svg { width: 14px; height: 20px; }
.home-intro-enter:hover, .home-intro-enter:focus-visible { color: #fff; background: rgba(255,255,255,.12); border-color: #fff; }
.home-intro-enter:focus-visible { outline: 2px solid #fff; outline-offset: 5px; }
#homepage { scroll-margin-top: 0; }
html.intro-ready { scrollbar-gutter: stable; }
html.intro-locked { overflow: hidden; overscroll-behavior: none; }
.intro-transition .home-intro {
  position: fixed;
  inset: 0;
  z-index: 40;
  height: 100vh;
  height: 100svh;
  min-height: 0;
  transform: translate3d(0,0,0);
  transition: transform 850ms cubic-bezier(.25,.46,.45,.94);
  will-change: transform;
  contain: layout paint;
  backface-visibility: hidden;
}
.intro-transition.intro-leaving .home-intro { transform: translate3d(0,-100%,0); }
.intro-transition.intro-complete .home-intro { pointer-events: none; }
@media (max-width: 600px) {
  .home-intro-copy { bottom: 200px; }
  .home-intro-copy h2 { max-width: 20ch; font-size: clamp(2rem,8.2vw,2.8rem); margin-bottom: 16px; }
  .home-intro-eyebrow { max-width: 35ch; font-size: .75rem; letter-spacing: .04em; }
  .home-intro-eyebrow span { margin: 0 6px; }
}
@media (max-height: 500px) {
  .home-intro-enter { bottom: calc(46px + env(safe-area-inset-bottom, 0px)); width: 44px; height: 44px; }
  .home-intro-enter span { top: 52px; }
}
@media (prefers-reduced-motion: reduce) {
  .intro-transition .home-intro, .home-intro-enter { transition: none; }
}
/* Keep the real navigation in place as the cover slides away. */
.home-page.intro-transition .site-header { z-index: 50; transition: none; }
.home-page.intro-transition:not(.intro-leaving) .site-header {
  background: transparent;
  color: white;
  box-shadow: none;
}
.home-page.intro-transition:not(.intro-leaving) .site-header::after { background: transparent; }
.home-page.intro-transition:not(.intro-leaving) .site-header .journal-logo,
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead-links > a,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-links > a,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-menu-trigger,
.home-page.intro-transition:not(.intro-leaving) .site-header .mobile-nav-toggle { color: white; }
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead::after,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-links > a::before,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-menu-item::before,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-secondary a::before { background: rgba(255,255,255,.22); }
.home-page.intro-transition .nav-dropdown-inner,
.home-page.intro-transition .mobile-nav-panel { color: var(--text); }
.home-page.intro-transition:not(.intro-leaving) .mobile-nav-toggle {
  min-width: 74px;
  min-height: 44px;
  padding: 0 14px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  background: transparent;
  font: inherit;
  font-weight: 600;
  text-shadow: inherit;
  cursor: pointer;
}
.home-page.intro-transition:not(.intro-leaving) .mobile-nav-toggle:focus-visible { outline: 2px solid #fff; outline-offset: -4px; }

.home-page.intro-leaving .site-header,
.home-page.intro-returning .site-header { transition: background-color 360ms ease, color 360ms ease; }
.home-page.intro-leaving .site-header a,
.home-page.intro-returning .site-header a { transition: color 360ms ease; }

/* Cover-only navigation: clear photographic text shadows without separator rules. */
.home-page.intro-transition:not(.intro-leaving) .site-header,
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead,
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead-links > a,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-menu-item,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-links > a,
.home-page.intro-transition:not(.intro-leaving) .site-header .mobile-nav-toggle { border-color: transparent; }
.home-page.intro-transition:not(.intro-leaving) .site-header::after,
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead::after,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav::after,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-menu-item::after,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-links > a::before { display: none; }
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead-links > a,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-links > a,
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-menu-trigger { text-decoration: none; }
.home-page.intro-transition:not(.intro-leaving) .site-header,
.home-page.intro-transition .home-intro { text-shadow: var(--intro-text-shadow); }
.home-page.intro-transition:not(.intro-leaving) .site-header .nav-dropdown-inner,
.home-page.intro-transition:not(.intro-leaving) .site-header .mobile-nav-panel { text-shadow: none; }

.intro-slides { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.intro-slide { position: absolute; inset: 0; visibility: hidden; transform: translate3d(100%,0,0); transition: transform 700ms cubic-bezier(.22,.61,.36,1); }
.intro-slide.is-current { visibility: visible; will-change: transform; }
.intro-slide:first-child { transform: translate3d(0,0,0); }
.intro-slide img { display: block; width: 100%; height: 100%; object-fit: cover; }
.intro-carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; display: grid; place-items: center; width: 44px; height: 52px; padding: 0; background: var(--intro-control-fill); border: 1px solid rgba(255,255,255,.28); border-radius: 28px; color: white; cursor: pointer; opacity: .85; transition: background-color 180ms ease, border-color 180ms ease, opacity 180ms ease; }
.intro-carousel-arrow:hover, .intro-carousel-arrow:focus-visible { opacity: 1; background: rgba(0,0,0,.16); }
.intro-carousel-arrow:focus-visible { outline: 2px solid white; outline-offset: 2px; }
.intro-carousel-prev { left: 10px; }
.intro-carousel-next { right: 10px; }
.intro-carousel-arrow::after { content: ''; border-top: 7px solid transparent; border-bottom: 7px solid transparent; filter: drop-shadow(0 1px 3px rgba(0,0,0,.5)); }
.intro-carousel-prev::after { border-right: 9px solid currentColor; }
.intro-carousel-next::after { border-left: 9px solid currentColor; }
.intro-carousel-count { position: absolute; right: var(--page-gutter); bottom: calc(34px + env(safe-area-inset-bottom, 0px)); font-size: .75rem; font-variant-numeric: tabular-nums; letter-spacing: .12em; }
.intro-carousel-arrow[hidden], .intro-carousel-count[hidden] { display: none; }
@media (prefers-reduced-motion: reduce) { .intro-slide { transition: none; } }

.intro-carousel-toggle { position: absolute; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); right: calc(var(--page-gutter) + 86px); min-width: 64px; min-height: 44px; padding: 8px 12px; border: 1px solid rgba(255,255,255,.28); border-radius: 24px; background: var(--intro-control-fill); color: white; font: inherit; font-size: .75rem; text-shadow: inherit; cursor: pointer; }
.intro-carousel-toggle:hover { text-decoration: underline; }
.intro-carousel-toggle[hidden] { display: none; }

/* Keep controls clear of the copy and of one another on compact screens. */
.home-intro .intro-language-switch {
  bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 24px;
  background: var(--intro-control-fill);
  text-shadow: var(--intro-text-shadow);
}
.home-intro .intro-language-switch:hover,
.intro-carousel-toggle:hover { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.7); text-decoration: none; }
.home-intro .intro-language-switch:focus-visible,
.intro-carousel-toggle:focus-visible { outline: 2px solid #fff; outline-offset: 4px; }
@media (max-width: 600px) {
  .intro-carousel-arrow { top: 38%; width: 44px; height: 44px; }
  .intro-carousel-prev { left: 8px; }
  .intro-carousel-next { right: 8px; }
  .home-intro .intro-language-switch { bottom: calc(100px + env(safe-area-inset-bottom, 0px)); }
  .intro-carousel-toggle { left: var(--page-gutter); right: auto; }
}
@media (max-height: 500px) {
  .home-intro-copy { bottom: 120px; }
  .home-intro-copy h2 { font-size: clamp(1.6rem, 6.4svh, 2rem); margin-bottom: 12px; }
  .home-intro-eyebrow { font-size: .7rem; }
  .home-intro .intro-language-switch { bottom: calc(76px + env(safe-area-inset-bottom, 0px)); }
  .intro-carousel-arrow { top: 43%; }
}

/* Apply directly to every cover label, including signed-in/admin navigation. */
.home-page.intro-transition:not(.intro-leaving) .site-header :is(.journal-logo, .masthead-links > a, .nav-links > a, .nav-menu-trigger, .mobile-nav-toggle, .mobile-nav-toggle > span),
.home-intro :is(.home-intro-eyebrow, .home-intro-enter, .home-intro-enter > span, .intro-carousel-count, .intro-carousel-toggle, .intro-language-switch) {
  text-shadow: var(--intro-text-shadow);
}
/* The search asset is black; invert it on the photographic cover. */
.home-page.intro-transition:not(.intro-leaving) .site-header .masthead-links a[href*="search.html"]::before {
  filter: invert(1) drop-shadow(0 2px 1px #000) drop-shadow(1px 4px 4px rgba(0,0,0,.9));
}
.home-intro-enter svg { filter: drop-shadow(0 2px 2px #000); }