:root {
  --fondo: #0f1420; --papel: #171e2e; --papel2: #1d2638; --tinta: #eef1f6; --suave: #a3adbf; --borde: #2a3550;
  --acento: #f2a93b; --acento-tinta: #1a1204; --ok: #5bd39a; --mal: #ff8a80; --radio: 16px;
  --sombra: 0 10px 30px rgba(0, 0, 0, .35);
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --fondo: #f7f4ee; --papel: #ffffff; --papel2: #fbf7f0; --tinta: #1d2230; --suave: #5f6778; --borde: #e6ddcc;
    --acento: #c97a0c; --acento-tinta: #ffffff; --ok: #1f7a4d; --mal: #b3261e; --sombra: 0 8px 24px rgba(40, 30, 10, .08);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --fondo: #f7f4ee; --papel: #ffffff; --papel2: #fbf7f0; --tinta: #1d2230; --suave: #5f6778; --borde: #e6ddcc;
  --acento: #c97a0c; --acento-tinta: #ffffff; --ok: #1f7a4d; --mal: #b3261e; --sombra: 0 8px 24px rgba(40, 30, 10, .08);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--fondo); color: var(--tinta); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--acento); }
.cabecera { max-width: 1040px; margin: 0 auto; padding: 1.1rem 16px; display: flex; justify-content: space-between; align-items: center; }
.marca { display: flex; align-items: center; gap: .55rem; font-size: 1.25rem; }
.logo { font-size: 1.8rem; }
.beta { font-size: .7rem; font-weight: 800; letter-spacing: .12em; padding: .2rem .5rem; border-radius: 999px; background: var(--acento); color: var(--acento-tinta); }
button, .principal { font: inherit; cursor: pointer; border-radius: 999px; border: 1px solid transparent; }
.fantasma { background: transparent; color: var(--tinta); border-color: var(--borde); padding: .45rem 1rem; }
.principal { background: var(--acento); color: var(--acento-tinta); font-weight: 700; text-decoration: none; display: inline-block; padding: .6rem 1.3rem; }
.principal.grande { padding: .85rem 1.8rem; font-size: 1.05rem; min-height: 48px; }
.principal:disabled { opacity: .6; cursor: wait; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid var(--acento); outline-offset: 2px; }
main { max-width: 1040px; margin: 0 auto; padding: 0 16px 3rem; }
.portada { text-align: center; padding: 3rem 0 2.5rem; }
.portada h1 { font-size: clamp(1.8rem, 5vw, 3rem); line-height: 1.15; margin: 0 auto .9rem; max-width: 18ch; letter-spacing: -.02em; }
.entradilla { color: var(--suave); font-size: 1.15rem; max-width: 52ch; margin: 0 auto .6rem; }
.lema { font-style: italic; color: var(--acento); margin: 0 0 1.8rem; }
.rejilla { display: grid; gap: 1rem; }
.cuatro { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-bottom: 3rem; }
.tres { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.tarjeta { background: var(--papel); border: 1px solid var(--borde); border-radius: var(--radio); padding: 1.2rem; box-shadow: var(--sombra); }
.tarjeta .ico { font-size: 1.8rem; }
.tarjeta h3 { margin: .4rem 0 .3rem; font-size: 1.08rem; }
.tarjeta p { margin: 0; color: var(--suave); font-size: .95rem; }
h2 { text-align: center; font-size: clamp(1.4rem, 3.5vw, 2rem); margin: 0 0 .3rem; }
.nota { text-align: center; color: var(--suave); margin: 0 auto 1.4rem; max-width: 60ch; }
.planes { margin-bottom: 3rem; }
.plan { position: relative; display: flex; flex-direction: column; gap: .3rem; background: var(--papel); border: 2px solid var(--borde); border-radius: var(--radio); padding: 1.2rem 1.2rem 1.1rem; cursor: pointer; box-shadow: var(--sombra); }
.plan input { position: absolute; opacity: 0; }
.plan .nombre { font-weight: 800; font-size: 1.15rem; }
.plan .que { color: var(--suave); }
.plan .cupo { font-size: .85rem; color: var(--acento); font-weight: 600; min-height: 1.3em; }
.plan.destacado { background: var(--papel2); }
.plan:has(input:checked) { border-color: var(--acento); }
.plan:has(input:checked)::after { content: "✓"; position: absolute; top: .8rem; right: 1rem; color: var(--acento); font-weight: 800; }
.plan:has(input:focus-visible) { outline: 3px solid var(--acento); outline-offset: 2px; }
.fundador { text-align: center; margin: 1.2rem 0 0; }
.formulario { background: var(--papel); border: 1px solid var(--borde); border-radius: var(--radio); padding: 1.6rem 1.2rem; box-shadow: var(--sombra); max-width: 560px; margin: 0 auto; }
form { display: flex; flex-direction: column; gap: 1rem; }
.campo { display: flex; flex-direction: column; gap: .35rem; font-weight: 600; }
.campo input { font: inherit; font-size: 16px; padding: .75rem 1rem; border-radius: 12px; border: 1px solid var(--borde); background: var(--fondo); color: var(--tinta); min-height: 48px; }
.casilla { display: flex; gap: .6rem; align-items: flex-start; font-size: .92rem; color: var(--suave); cursor: pointer; }
.casilla input { margin-top: .25rem; width: 1.15rem; height: 1.15rem; accent-color: var(--acento); flex: none; }
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.resultado { min-height: 1.5em; margin: 0; font-weight: 600; text-align: center; }
.resultado.ok { color: var(--ok); }
.resultado.mal { color: var(--mal); }
.pie { max-width: 1040px; margin: 0 auto; padding: 1.5rem 16px 2.5rem; text-align: center; color: var(--suave); font-size: .85rem; border-top: 1px solid var(--borde); }
.legal { max-width: 760px; }
.hoja { background: var(--papel); border: 1px solid var(--borde); border-radius: var(--radio); padding: 1.2rem 1.4rem; margin-bottom: 1rem; }
.hoja h2 { text-align: left; font-size: 1.3rem; }
.hoja h3 { margin: 1rem 0 .3rem; font-size: 1.02rem; }
[data-idioma="es"] [lang="en"], [data-idioma="en"] [lang="es"] { display: none; }
@media (max-width: 520px) { .portada { padding: 2rem 0 1.8rem; } .entradilla { font-size: 1.02rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
.campo select { font: inherit; font-size: 16px; padding: .7rem .9rem; border-radius: 12px; border: 1px solid var(--borde); background: var(--fondo); color: var(--tinta); min-height: 48px; }
.faq { max-width: 760px; margin: 3rem auto 0; }
.faq details { background: var(--papel); border: 1px solid var(--borde); border-radius: 12px; padding: .9rem 1.1rem; margin-bottom: .6rem; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { color: var(--suave); margin: .6rem 0 0; }
.plan .cupo.lleno { color: var(--mal); }