/* batch4: hero motion (cinema + exhibition). Standalone; remove this file + the batch4 blocks in 4 html pages to roll back. */
.xk-work-hero.hm-hero{position:relative;--hm-pos-cinema:40%;--hm-pos-exhibition:35%}
/* 16:9 容器里裁 2.75:1 素材：海报 img 与 video 必须用同一个水平 object-position（电影、展览各一个变量） */
.xk-work-hero.hm-hero img[src*="/cinema-hero-"],.xk-work-hero.hm-hero video[data-src*="/cinema-"]{object-position:var(--hm-pos-cinema) 50%}
.xk-work-hero.hm-hero img[src*="/exhibition-hero-"],.xk-work-hero.hm-hero video[data-src*="/exhibition-"]{object-position:var(--hm-pos-exhibition) 50%}
.xk-work-hero.hm-hero picture{display:block}
.xk-work-hero.hm-hero .hm-video{position:absolute;left:0;top:0;width:100%;height:100%;object-fit:cover;display:block;opacity:0;pointer-events:none;background:#080706}
.xk-work-hero.hm-hero .hm-shade{position:absolute;inset:0;opacity:0;pointer-events:none;background:linear-gradient(90deg,rgba(14,13,11,.62) 0%,rgba(14,13,11,.28) 34%,rgba(14,13,11,0) 62%),linear-gradient(0deg,rgba(14,13,11,.58) 0%,rgba(14,13,11,0) 38%)}
.xk-work-hero.hm-hero.hm-on .hm-video,.xk-work-hero.hm-hero.hm-on .hm-shade{opacity:1;transition:opacity .6s ease}
@media (max-width:900px){.xk-work-hero.hm-hero .hm-video,.xk-work-hero.hm-hero .hm-shade{display:none}}
@media (prefers-reduced-motion:reduce){.xk-work-hero.hm-hero .hm-video,.xk-work-hero.hm-hero .hm-shade{display:none}.xk-work-hero.hm-hero.hm-on .hm-video,.xk-work-hero.hm-hero.hm-on .hm-shade{transition:none}}
/* nav: exhibition card anchors (#card-<slug>) — keep title clear of the fixed header, same 96px as #project-story */
#card-earth-echoes,#card-eight-phases,#card-sacred-mountains,#card-miao-xiang,#card-book-of-the-hidden{scroll-margin-top:96px}
/* book: Chinese title line under the English h1 on /en/works/book-of-the-hidden/ — Songti, one step below the h1 (title-md), same colour as the h1 (var(--xk-black)), regular weight, may wrap to two lines */
body:not(.v3-home) .page-head h2.xk-title-zh{margin:18px 0 0;color:var(--xk-black);font:400 var(--xk-title-md)/1.3 "Songti SC","Noto Serif SC",serif;letter-spacing:0;text-transform:none}
/* book: silent work video on /works/book-of-the-hidden/ (zh + en). Desktop only: at <=900px or with reduced motion the whole section is hidden, so only the hero poster shows and the mp4 is never requested (preload=none anyway; no autoplay, no script). Poster = the exhibition thumbnail, cropped 16:9 like the hero. */
.xk-trailer-desktop video{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:#080706}
@media (max-width:900px){.xk-trailer-desktop{display:none}}
@media (prefers-reduced-motion:reduce){.xk-trailer-desktop{display:none}}