/* White opening content on additional pages; keep the shared dark header,
   announcement strip, logo, version badge and mobile navigation unchanged.
   Load after page styles; use body.subpage and .subpage-hero. */
.subpage .subpage-hero { background:#fff; color:#17233b; }
.subpage .desktop-nav [aria-current=page],
.subpage .mobile-nav [aria-current=page] { color:#adcaff; }