/* V55: full official artwork, an explicit exhibition entry, and the film-led homepage. */
body.at-entrance { --header-height: 68px; }
body.at-entrance:has(#landing:not([hidden])) .header { height: 68px; padding: 0 4.5vw; gap: 16px; }
body.at-entrance .brand { gap: 10px; }
body.at-entrance .brand strong { font-size: 19px; }
body.at-entrance .brand-mark { height: 38px; width: 31px; }
body.at-entrance .brand-mark i { height: 23px; width: 6px; }
body.at-entrance .brand-mark i:nth-child(2) { height: 35px; width: 8px; }
body.at-entrance .home-location { display: block; margin-left: auto; font-size: 11px; letter-spacing: 2px; }
.home-v55 { --home-ink: #24453d; --home-muted: #6d7b70; background: #f6f4eb; color: var(--home-ink); }
.expo-hero { border-bottom: 1px solid #dce1d5; }
.expo-poster-rail { width: 100%; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: #83a899 #0a887f; }
.expo-poster-rail:focus-visible { outline: 2px solid #436d5a; outline-offset: -3px; }
.expo-poster { display: block; width: 100%; padding: 0; border: 0; border-radius: 0; cursor: zoom-in; background: #087f94; }
.expo-poster picture, .expo-poster img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 1; }
.expo-poster img { object-fit: contain; }
.expo-poster:hover { filter: none; }
.expo-poster:focus-visible { outline: 3px solid #faf8e7; outline-offset: -5px; }
.expo-heading-accessible { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.expo-entry-bridge { margin: 0 auto 38px; text-align: center; }
.expo-enter { position: relative; isolation: isolate; min-height: 60px; width: 280px; max-width: 100%; padding: 17px 30px; background: linear-gradient(145deg, #35695c 0%, #204f44 48%, #153e35 100%); color: #f6edcf; font-size: 16px; font-weight: 500; letter-spacing: .14em; text-indent: .14em; border: 1px solid #b4a77b; border-radius: 13px; box-shadow: inset 0 1px 0 #fff8dc38, inset 0 -1px 0 #062a2599, 0 8px 20px #173e321a, 0 2px 4px #173e3212; text-shadow: 0 1px 1px #072e2a66; transition: transform .18s, box-shadow .18s; }
.expo-enter::before { content: ''; position: absolute; inset: 4px; border: 1px solid #dccb982e; border-top-color: #eddbab59; border-radius: 9px; pointer-events: none; }
.expo-enter:hover { filter: none; }
@media(hover:hover) and (pointer:fine) {
  .expo-enter:hover:not(:disabled) { transform: translateY(-1px); box-shadow: inset 0 1px 0 #fff8dc4d, inset 0 -1px 0 #062a2599, 0 11px 24px #173e3226, 0 3px 6px #173e3214; }
}
.expo-enter:active:not(:disabled) { transform: translateY(1px); box-shadow: inset 0 2px 5px #082d2a55, 0 3px 8px #173e321c; }
.expo-enter:focus-visible { outline: 2px solid #436d5a; outline-offset: 5px; }
.expo-enter:disabled { cursor: progress; opacity: .7; }
.home-v55 .home-entry-message { max-width: 560px; margin: 0 auto; padding: 12px 0 0; }
.home-v55 .home-entry-message:has(#opening-entry-note:not(:empty)) { display: block; }
.xiushan-discover { padding: 50px 4.5vw 62px; scroll-margin-top: 24px; outline: none; }
.xiushan-section-heading { text-align: center; margin-bottom: 27px; }
.xiushan-section-heading .xiushan-kicker { margin: 0 0 10px; font-size: 9px; letter-spacing: 3px; color: #75836d; }
.xiushan-section-heading h2 { margin: 0; font: 400 clamp(28px,3.4vw,42px)/1.3 'Songti SC',STSong,SimSun,serif; letter-spacing: .08em; }
.xiushan-section-heading > p:last-child { margin: 12px 0 0; font-size: 14px; color: var(--home-muted); letter-spacing: .06em; }
.promo-player { position: relative; width: 100%; max-width: 1000px; aspect-ratio: 16 / 9; margin: 0 auto; overflow: hidden; border-radius: 10px; background: #102a2b; box-shadow: 0 12px 32px #283e3510; }
.promo-player video { display: block; width: 100%; height: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #102a2b; }
.promo-play { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); display: flex; align-items: center; justify-content: center; gap: 12px; min-height: 54px; min-width: 180px; padding: 12px 22px; border: 1px solid #ffffffa1; border-radius: 40px; color: #fff; background: #143831e8; box-shadow: 0 3px 15px #0002; font-size: 14px; letter-spacing: .04em; }
.promo-play-symbol { font-size: 15px; }
.promo-play:focus-visible { outline-color: white; }
.promo-status { position: absolute; left: 16px; right: 16px; bottom: 55px; width: fit-content; max-width: calc(100% - 32px); margin: 0 auto; padding: 8px 13px; background: #122c29e8; color: #fff; border-radius: 4px; font-size: 12px; text-align: center; pointer-events: none; }
.promo-status:empty { display: none; }
.xiushan-entries { max-width: 1000px; margin: 28px auto 0; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.guide-entry { position: relative; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; min-height: 208px; min-width: 0; padding: 26px; text-align: left; border: 1px solid #d9d3be; border-radius: 12px; color: #254c41; background: linear-gradient(145deg, #fffdf7 0%, #faf8f0 48%, #f1eddf 100%); box-shadow: inset 0 1px 0 #fff, 0 5px 14px #344c3e0a, 0 1px 2px #344c3e06; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.guide-entry::before { content: ''; position: absolute; inset: 5px; border: 1px solid #b8a67726; border-top-color: #fffdf9; border-radius: 8px; pointer-events: none; }
.guide-entry:hover { filter: none; }
@media(hover:hover) and (pointer:fine) {
  .guide-entry:hover { transform: translateY(-2px); border-color: #b6a574; box-shadow: inset 0 1px 0 #fff, 0 10px 22px #344c3e12, 0 2px 5px #344c3e08; }
}
.guide-entry:active { transform: translateY(1px); box-shadow: inset 0 2px 5px #7d785215, 0 2px 6px #344c3e0a; }
.guide-entry:focus-visible { outline: 2px solid #436d5a; outline-offset: 4px; }
.guide-entry-mark { display: block; margin-bottom: 18px; font: 400 46px/1.1 'Songti SC',STSong,SimSun,serif; color: #718777; }
.guide-entry-mark::after { content: ''; display: block; width: 28px; height: 1px; margin-top: 15px; background: #b6a574; }
.guide-entry-copy { display: flex; flex-direction: column; gap: 8px; }
.guide-entry-copy strong { font-size: 20px; line-height: 1.35; font-weight: 500; letter-spacing: .06em; }
.guide-entry-copy > span { font-size: 12px; line-height: 1.65; color: #5d6a5f; }
body.expo-poster-open, body.at-entrance.expo-poster-open { overflow: hidden; }
#expo-poster-dialog { position: fixed; inset: 0; width: 100%; max-width: none; height: 100%; height: 100dvh; max-height: none; border: 0; margin: 0; padding: 0; border-radius: 0; color: #f6f4eb; background: #112c2e; overflow: hidden; }
#expo-poster-dialog::backdrop { background: #112c2e; backdrop-filter: none; }
.expo-poster-toolbar { min-height: 68px; padding: max(8px,env(safe-area-inset-top)) 24px 8px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 1px solid #ffffff26; }
.expo-poster-toolbar h2 { font-size: 17px; font-weight: 400; margin: 0; }
.expo-poster-toolbar > div { display: flex; gap: 8px; }
.expo-poster-toolbar button { min-width: 60px; min-height: 44px; padding: 8px 14px; color: #fff; font-size: 14px; border: 1px solid #ffffff4a; border-radius: 4px; }
.expo-poster-viewport { width: 100%; height: calc(100% - 68px); overflow: auto; overscroll-behavior: contain; display: grid; align-items: center; -webkit-overflow-scrolling: touch; }
.expo-poster-viewport img { display: block; width: 100%; height: auto; max-width: none; margin: auto; }
#expo-poster-dialog.is-zoomed .expo-poster-viewport img { width: max(100%, 2560px); }
@media(min-width:701px) and (max-width:900px) {
  .xiushan-entries { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .guide-entry { min-height: 198px; padding: 24px; }
}
@media(max-width:700px) {
  body.at-entrance { --header-height: 56px; }
  body.at-entrance:has(#landing:not([hidden])) .header { height: 56px; padding: 0 16px; gap: 8px; }
  body.at-entrance .brand { gap: 7px; }
  body.at-entrance .brand strong { font-size: 16px; }
  body.at-entrance .brand-mark { width: 25px; height: 31px; gap: 3px; }
  body.at-entrance .brand-mark i { height: 19px; width: 5px; }
  body.at-entrance .brand-mark i:nth-child(2) { height: 28px; width: 6px; }
  body.at-entrance .home-location { font-size: 9px; letter-spacing: .3px; }
  .expo-poster { width: 180%; max-width: none; }
  .expo-entry-bridge { margin-bottom: 32px; }
  .expo-enter { min-height: 56px; width: 272px; padding: 15px 22px; font-size: 15px; }
  .xiushan-discover { padding: 32px 18px 36px; }
  .xiushan-section-heading { margin-bottom: 22px; }
  .xiushan-section-heading .xiushan-kicker { font-size: 8px; letter-spacing: 2px; margin-bottom: 9px; }
  .xiushan-section-heading h2 { font-size: 29px; }
  .xiushan-section-heading > p:last-child { font-size: 12px; margin-top: 9px; }
  .promo-player { border-radius: 7px; }
  .promo-play { min-width: 152px; min-height: 48px; padding: 9px 16px; gap: 9px; font-size: 13px; }
  .xiushan-entries { grid-template-columns: repeat(2,minmax(0,1fr)); margin-top: 20px; gap: 12px; }
  .guide-entry { min-height: 172px; padding: 18px 16px; border-radius: 10px; }
  .guide-entry::before { border-radius: 6px; }
  .guide-entry-mark { font-size: 38px; margin-bottom: 15px; }
  .guide-entry-mark::after { width: 24px; margin-top: 12px; }
  .guide-entry-copy { gap: 7px; }
  .guide-entry-copy strong { font-size: 18px; }
  .expo-poster-toolbar { min-height: 64px; padding-left: 12px; padding-right: 12px; }
  .expo-poster-toolbar h2 { font-size: 13px; }
  .expo-poster-toolbar button { font-size: 12px; padding: 8px 10px; }
  .expo-poster-toolbar > div { gap: 6px; }
  .expo-poster-viewport { height: calc(100% - 64px); }
}
@media(prefers-reduced-motion:reduce) {
  .home-v55 *, .home-v55 *::before { transition: none !important; }
  .guide-entry:hover, .guide-entry:active { transform: none; }
}