:root {
  --color-texto: #1a1a1a;
  --color-fondo: #ffffff;
  --color-enlace: #063a63;
  --color-acento: #0a5c3a;
  --color-foco: #06263f;
  --color-borde: #595959;
  --color-muted: #1a1a1a;
  --fuente-base: "Segoe UI", Arial, Helvetica, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--fuente-base); color: var(--color-texto); background: var(--color-fondo); line-height: 1.5; }
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  background: #000000;
  color: #ffffff;
  z-index: 100;
}
.skip-link:focus {
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  padding: 0.5rem 1rem;
  left: 0.5rem;
  top: 0.5rem;
}
a { color: var(--color-enlace); text-decoration: underline; }
a:visited { color: var(--color-enlace); }
a:hover { color: var(--color-foco); }
a:focus, button:focus, input:focus, textarea:focus, select:focus {
  outline: 3px solid var(--color-foco);
  outline-offset: 2px;
  box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.95);
}
header { border-bottom: 1px solid var(--color-borde); padding: 1rem 1.5rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
header .marca .logo { font-size: 1.5rem; font-weight: 700; text-decoration: none; color: var(--color-texto); }
header .descriptor { margin: 0; font-size: 0.85rem; color: var(--color-muted); }
header nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 1rem; margin: 0; padding: 0; }
header nav a[aria-current="page"] { font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--color-enlace); }
main { max-width: 60rem; margin: 0 auto; padding: 2rem 1.5rem; display: block; }
section { margin-bottom: 2rem; }
.tarjetas { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); list-style: none; padding: 0; }
.tarjetas li { border: 1px solid var(--color-borde); border-radius: 0.5rem; padding: 1rem; }
.breadcrumb { font-size: 0.85rem; color: var(--color-muted); margin: 0 0 1.5rem; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.35rem; padding: 0; margin: 0; }
.breadcrumb li { display: flex; align-items: center; gap: 0.35rem; }
.breadcrumb li:not(:last-child)::after { content: "\203A"; color: var(--color-texto); }
.breadcrumb li[aria-current="page"] { font-weight: 600; color: var(--color-texto); }
footer { border-top: 1px solid var(--color-borde); padding: 1.5rem; font-size: 0.9rem; color: var(--color-muted); }
footer nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 1rem; }
form.formulario-contacto { display: flex; flex-direction: column; gap: 1rem; max-width: 32rem; }
form.formulario-contacto label { font-weight: 600; display: block; margin-bottom: 0.25rem; }
form.formulario-contacto input, form.formulario-contacto textarea { padding: 0.5rem; border: 1px solid var(--color-borde); border-radius: 0.25rem; font-family: inherit; font-size: 1rem; width: 100%; }
.boton { display: inline-block; background: var(--color-acento); color: #ffffff; padding: 0.6rem 1.2rem; border-radius: 0.25rem; text-decoration: none; border: none; font-size: 1rem; cursor: pointer; }
.boton:visited { color: #ffffff; }
.boton:hover, .boton:focus { background: #063d27; color: #ffffff; }