/* Indicador de lectura compartido por las dos páginas. */
:root{--progress-rail:40px;--progress-car-width:64px;--progress-car-height:37.12px;--site-nav-height:76px}
html[data-landing="diesel"]{--site-nav-height:82px;--progress-rail:68px;--progress-car-height:64px}
html[data-landing="diesel"] .scroll-progress .progress{top:calc(var(--progress-rail) - 4px)}
html{scroll-padding-top:calc(var(--site-nav-height) + var(--progress-rail) + 12px)}
.scroll-progress{position:fixed;inset:0 0 auto;height:var(--progress-rail);z-index:200;background:#fff;pointer-events:none;overflow:hidden}
.scroll-progress .progress{position:absolute;top:calc(var(--progress-rail) - 7px);left:0;width:0;height:4px;background:var(--yellow,#ffc426);border-radius:0 3px 3px 0}
.progress-car{position:absolute;left:0;top:calc((var(--progress-rail) - var(--progress-car-height))/2);width:var(--progress-car-width);height:var(--progress-car-height);will-change:transform}
.progress-car img{display:block;width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 1px 1px #0d1f4f25);user-select:none}
.nav,.header{padding-top:var(--progress-rail)}
@media(max-width:1100px){.nav-links{top:calc(var(--site-nav-height) + var(--progress-rail));max-height:calc(100dvh - var(--site-nav-height) - var(--progress-rail))}.header nav{max-height:calc(100dvh - var(--site-nav-height) - var(--progress-rail))}}
@media(max-width:920px){html[data-landing="diesel"]{--site-nav-height:76px}}
@media(max-width:760px){:root{--progress-rail:36px;--progress-car-width:56px;--progress-car-height:32.48px}html[data-landing="automotriz"]{--site-nav-height:62px}html[data-landing="diesel"]{--progress-rail:60px;--progress-car-height:56px}}
@media(prefers-reduced-motion:reduce){.progress-car{will-change:auto}}