/* Colores tomados del logo: azul acero que pasa a verde. */
:root {
  --azul: #1f4e79;
  --azul-medio: #2f6694;
  --verde: #3f8f6b;
  --tinta: #13263a;
  --texto: #445566;
  --tenue: #f3f7fa;
  --borde: #dde6ee;
  --degradado: linear-gradient(120deg, var(--azul) 0%, var(--azul-medio) 45%, var(--verde) 100%);
  --radio: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--texto);
  line-height: 1.6;
  background: #fff;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { color: var(--tinta); line-height: 1.2; }

.contenedor { width: min(1120px, 100% - 40px); margin-inline: auto; }

/* ---------- barra superior ---------- */
.barra {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--borde);
}
.barra-interior { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.marca { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--tinta); font-size: 1.1rem; }
.marca img { border-radius: 10px; }
.marca small { font-size: .8em; font-weight: 600; color: var(--texto); }
.menu { display: flex; align-items: center; gap: 28px; font-weight: 500; }
.menu a:not(.boton):hover { color: var(--azul); }
.menu-check, .menu-boton { display: none; }

/* ---------- botones ---------- */
.boton {
  display: inline-block; padding: 13px 26px; border-radius: 999px;
  background: var(--degradado); color: #fff; font-weight: 600;
  box-shadow: 0 8px 20px rgba(31, 78, 121, .22);
  transition: transform .15s, box-shadow .15s;
}
.boton:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(31, 78, 121, .3); }
.boton-chico { padding: 9px 20px; }
.boton-claro { background: #fff; color: var(--azul); border: 1px solid var(--borde); box-shadow: none; }
.boton-blanco { background: #fff; color: var(--azul); }
.boton-borde { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, .7); box-shadow: none; }

/* ---------- portada ---------- */
.portada {
  padding: 90px 0 100px;
  background:
    radial-gradient(circle at 85% 20%, rgba(63, 143, 107, .14), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(31, 78, 121, .12), transparent 50%);
}
.portada-interior { display: grid; grid-template-columns: 1.3fr 1fr; gap: 50px; align-items: center; }
.etiqueta {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--verde); margin-bottom: 14px;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin-bottom: 22px; }
.degradado { background: var(--degradado); -webkit-background-clip: text; background-clip: text; color: transparent; }
.entrada { font-size: 1.15rem; max-width: 34em; margin-bottom: 32px; }
.acciones { display: flex; flex-wrap: wrap; gap: 14px; }
.plataformas { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.plataformas li {
  font-size: .85rem; padding: 5px 14px; border-radius: 999px;
  background: #fff; border: 1px solid var(--borde); color: var(--azul);
}
.portada-logo {
  justify-self: center; background: #fff; padding: 36px; border-radius: 36px;
  box-shadow: 0 30px 60px rgba(19, 38, 58, .12);
  animation: flotar 6s ease-in-out infinite;
}
@keyframes flotar { 50% { transform: translateY(-12px); } }

/* ---------- secciones ---------- */
.seccion { padding: 90px 0; }
.seccion-tenue { background: var(--tenue); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); margin-bottom: 14px; }
.subtitulo { max-width: 40em; margin-bottom: 10px; }

.rejilla { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 36px; }
.tarjeta {
  padding: 30px; border: 1px solid var(--borde); border-radius: var(--radio); background: #fff;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.tarjeta:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(19, 38, 58, .08); border-color: transparent; }
.tarjeta h3 { font-size: 1.15rem; margin-bottom: 8px; }
.icono {
  width: 52px; height: 52px; display: grid; place-items: center; font-size: 1.5rem;
  border-radius: 14px; margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(31, 78, 121, .1), rgba(63, 143, 107, .14));
}

.sector {
  display: flex; flex-direction: column; gap: 4px; padding: 22px 24px;
  background: #fff; border-radius: var(--radio); border-left: 4px solid var(--verde);
}
.sector strong { color: var(--tinta); font-size: 1.05rem; }

.pasos { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 36px; }
.pasos li { position: relative; padding-top: 8px; }
.pasos span {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--degradado); color: #fff; font-weight: 700; margin-bottom: 14px;
}
.pasos h3 { margin-bottom: 6px; }

.garantias {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 60px;
  padding: 34px; border-radius: var(--radio); background: var(--tenue);
}
.garantias div { display: flex; flex-direction: column; gap: 4px; }
.garantias strong { color: var(--azul); }

/* ---------- contacto y pie ---------- */
.contacto { background: var(--degradado); color: #e9f1f7; }
.contacto h2 { color: #fff; }
.contacto-interior { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }

.pie { background: var(--tinta); color: #9fb2c4; padding: 36px 0; font-size: .9rem; }
.pie-interior { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.marca-pie { color: #fff; font-size: 1rem; }
.marca-pie img { background: #fff; border-radius: 8px; }

/* ---------- teléfono y tableta ---------- */
@media (max-width: 900px) {
  .portada-interior { grid-template-columns: 1fr; text-align: center; }
  .portada { padding: 60px 0 70px; }
  .entrada { margin-inline: auto; }
  .acciones, .plataformas { justify-content: center; }
  .portada-logo { order: -1; padding: 22px; border-radius: 28px; }
  .portada-logo img { width: 150px; height: 150px; }
  .rejilla, .garantias { grid-template-columns: 1fr 1fr; }
  .pasos { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .menu-boton { display: block; width: 40px; height: 40px; position: relative; cursor: pointer; }
  .menu-boton span, .menu-boton span::before, .menu-boton span::after {
    position: absolute; left: 9px; width: 22px; height: 2px; background: var(--tinta); content: "";
  }
  .menu-boton span { top: 19px; }
  .menu-boton span::before { left: 0; top: -7px; }
  .menu-boton span::after { left: 0; top: 7px; }
  .menu {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 18px; padding: 24px; background: #fff; border-bottom: 1px solid var(--borde);
  }
  .menu-check:checked ~ .menu { display: flex; }
}
@media (max-width: 600px) {
  .rejilla, .garantias, .pasos { grid-template-columns: 1fr; }
  .seccion { padding: 64px 0; }
  .contacto-interior { text-align: center; justify-content: center; }
  .pie-interior { flex-direction: column; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}