/* T4b｜黑色沙漠 — retina v1 (網藝 approved 2026-10-09). Loaded only with Sink:MaterialT4b, after t4b-black-desert.css.
   Sub-page page band reuses the wide hero art; swap layer 2 to an image-set (1x 1920×720 / 2x 3840×1440).
   Browsers without image-set() drop this declaration and keep the 1x url() from t4b-black-desert.css.
   Remove this file's <link> in _Layout to revert to 1x. See docs/T4B-RETINA.md. */
.t4b-sub>.page-heading{background-image:linear-gradient(180deg,rgba(10,9,9,.62) 0%,rgba(10,9,9,.38) 48%,rgba(10,9,9,.9) 100%),image-set(url(/assets/t4b/hero-cinematic-wide-1920x720.webp) type("image/webp") 1x,url(/assets/t4b/hero-cinematic-wide@2x.webp) type("image/webp") 2x)}