/* Portada original: conservar el diseño y la escena, con tema oscuro en móvil. */
@media (max-width:860px){
 :root,:root:not([data-theme=light]){
  --bg:#0B1117;--surface:#111A22;--ink:#E6ECF1;--ink-2:#93A1AE;--line:#26333F;
  --signal:#3CCBEB;--signal-soft:rgba(60,203,235,.12);--on-signal:#05212B;--danger:#FF8A7A;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px -12px rgba(0,0,0,.6);color-scheme:dark;
 }
}