:root {
  --azul: #005FAD;
  --azul-oscuro: #004a87;
  --azul-claro: #e6f1fa;
  --tinta: #10233a;
  --gris: #5b6b7c;
  --linea: #e2e8f0;
  --fondo: #ffffff;
  --fondo-alt: #f6f9fc;
  --radio: 14px;
  --ancho: 1080px;
  --sombra: 0 6px 24px rgba(16, 35, 58, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--tinta);
  background: var(--fondo);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--azul); text-decoration: none; }
a:hover { text-decoration: underline; }

.contenedor {
  width: 100%;
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--linea);
}
.cabecera .contenedor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--tinta);
}
.marca:hover { text-decoration: none; }
.marca img { height: 30px; width: auto; }
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav a {
  color: var(--gris);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav a:hover { color: var(--azul); text-decoration: none; }
.idioma {
  display: inline-flex;
  border: 1px solid var(--linea);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.8rem;
}
.idioma a {
  padding: 4px 10px;
  color: var(--gris);
  font-weight: 600;
}
.idioma a:hover { text-decoration: none; background: var(--fondo-alt); }
.idioma a.activo { background: var(--azul); color: #fff; }

.menu-btn {
  display: none;
  background: none;
  border: 0;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--tinta);
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--azul) 0%, var(--azul-oscuro) 100%);
  color: #fff;
  padding: 72px 0 88px;
}
.hero .contenedor {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.hero p.lead {
  margin-top: 18px;
  font-size: 1.15rem;
  opacity: 0.92;
  max-width: 30em;
}
.hero .acciones {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-img {
  justify-self: center;
  max-width: 320px;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.35));
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: var(--radio);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primario { background: #fff; color: var(--azul); }
.btn-primario:hover { box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2); }
.btn-fantasma {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
  backdrop-filter: blur(4px);
}
.btn-fantasma:hover { background: rgba(255, 255, 255, 0.22); }
.btn-azul { background: var(--azul); color: #fff; }
.btn-azul:hover { background: var(--azul-oscuro); }

/* ---------- Secciones ---------- */
.seccion { padding: 72px 0; }
.seccion.alt { background: var(--fondo-alt); }
.seccion h2 {
  font-size: 1.9rem;
  letter-spacing: -0.02em;
  text-align: center;
}
.seccion .subtitulo {
  text-align: center;
  color: var(--gris);
  margin-top: 12px;
  max-width: 38em;
  margin-left: auto;
  margin-right: auto;
}

.rejilla {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tarjeta {
  background: var(--fondo);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: 26px;
  box-shadow: var(--sombra);
}
.tarjeta .icono {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--azul-claro);
  color: var(--azul);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 14px;
}
.tarjeta h3 { font-size: 1.1rem; }
.tarjeta p { margin-top: 8px; color: var(--gris); font-size: 0.95rem; }

/* ---------- CTA franja ---------- */
.franja-cta {
  background: var(--azul);
  color: #fff;
  text-align: center;
  padding: 64px 0;
}
.franja-cta h2 { font-size: 1.8rem; }
.franja-cta p { opacity: 0.9; margin-top: 10px; }
.franja-cta .acciones {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- Descargas ---------- */
.descargas-caja {
  max-width: 460px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.descargas-caja .btn { justify-content: center; }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 40px auto 0; }
.faq details {
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: 4px 20px;
  margin-bottom: 12px;
  background: var(--fondo);
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 0;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; float: right; color: var(--azul); font-weight: 700; }
.faq details[open] summary::after { content: '\2013'; }
.faq details p { padding-bottom: 16px; color: var(--gris); }

/* ---------- Contenido legal ---------- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 0;
}
.legal h1 { font-size: 2rem; margin-bottom: 8px; }
.legal .fecha { color: var(--gris); margin-bottom: 32px; }
.legal h2 { font-size: 1.25rem; margin: 32px 0 10px; }
.legal h3 { font-size: 1.05rem; margin: 22px 0 8px; color: var(--azul-oscuro); }
.legal p, .legal li { color: #33465a; margin-bottom: 10px; }
.legal ul { padding-left: 22px; }

/* ---------- Footer ---------- */
.pie {
  background: var(--tinta);
  color: #b9c6d3;
  padding: 48px 0 32px;
  font-size: 0.9rem;
}
.pie .contenedor {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
}
.pie a { color: #d7e2ee; }
.pie h4 { color: #fff; font-size: 0.95rem; margin-bottom: 12px; }
.pie ul { list-style: none; }
.pie ul li { margin-bottom: 8px; }
.pie .copy {
  width: 100%;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 16px;
  padding-top: 20px;
  color: #8a9bab;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero .contenedor { grid-template-columns: 1fr; text-align: center; }
  .hero .acciones { justify-content: center; }
  .hero-img { max-width: 240px; }
  .hero h1 { font-size: 2.05rem; }
  .rejilla { grid-template-columns: 1fr; }
  .nav { display: none; }
  .nav.abierto {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    border-bottom: 1px solid var(--linea);
    padding: 16px 24px;
    gap: 16px;
  }
  .menu-btn { display: block; }
}