:root {
  --fondo: #f4f5fb;
  --superficie: #ffffff;
  --tinta: #16172b;
  --tinta2: #5b5e78;
  --marca: #3b3fd4;
  --borde: #e3e5f0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fondo: #0e0f1a;
    --superficie: #181a2a;
    --tinta: #f1f2fa;
    --tinta2: #a7aac4;
    --marca: #8f93ff;
    --borde: #2a2d44;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--tinta);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header.sitio {
  max-width: 760px; margin: 0 auto; padding: 20px 16px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
header.sitio a.marca { color: var(--tinta); text-decoration: none; font-weight: 700; font-size: 20px; }
nav a { color: var(--tinta2); text-decoration: none; margin-left: 16px; font-size: 15px; }
nav a:hover, a { color: var(--marca); }
h1 { font-size: 34px; line-height: 1.2; margin: 8px 0 4px; letter-spacing: -0.02em; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p, li { color: var(--tinta); }
.fecha, .nota { color: var(--tinta2); font-size: 15px; }
.tarjeta {
  background: var(--superficie); border: 1px solid var(--borde); border-radius: 18px;
  padding: 20px 22px; margin: 16px 0;
}
.portada { text-align: center; padding-top: 48px; }
.portada h1 { font-size: 44px; }
.portada .lema { font-size: 21px; color: var(--tinta2); margin: 0 auto 28px; max-width: 560px; }
.enlaces { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.boton {
  display: inline-block; padding: 12px 20px; border-radius: 999px; text-decoration: none; font-weight: 600;
  background: var(--superficie); border: 1px solid var(--borde); color: var(--tinta);
}
footer { max-width: 760px; margin: 0 auto; padding: 0 16px 40px; color: var(--tinta2); font-size: 14px; }

/* Portada */
.ancho { max-width: 1080px; }
.heroe { text-align: center; padding: 40px 16px 8px; }
.heroe img.icono { width: 128px; height: 128px; }
.heroe h1 { font-size: 48px; margin: 18px 0 6px; }
.heroe .lema { font-size: 22px; color: var(--tinta2); max-width: 620px; margin: 0 auto 22px; }
.insignia {
  display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 600;
  background: var(--tinta); color: var(--fondo); text-decoration: none;
}
.insignia small { display: block; font-weight: 500; opacity: .75; font-size: 13px; }
.capturas {
  display: grid; grid-template-columns: 1fr 1.6fr; gap: 20px; align-items: center;
  max-width: 1080px; margin: 36px auto 0; padding: 0 16px;
}
.capturas img { width: 100%; height: auto; border-radius: 22px; box-shadow: 0 18px 40px rgba(30, 30, 90, .18); }
.capturas .mac { grid-column: 1 / -1; border-radius: 14px; }
.funciones {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px;
  max-width: 1080px; margin: 48px auto 0; padding: 0 16px;
}
.funciones .tarjeta { margin: 0; }
.funciones h3 { margin: 6px 0 4px; font-size: 18px; }
.funciones p { margin: 0; color: var(--tinta2); font-size: 16px; }
.simbolo {
  display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 12px;
  background: var(--c, var(--marca)); color: #fff;
}
.simbolo svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.simbolo.grande { width: 56px; height: 56px; border-radius: 15px; margin-bottom: 4px; }
.simbolo.grande svg { width: 30px; height: 30px; }
@media (prefers-color-scheme: dark) { .privado .simbolo { background: var(--marca); } }
.privado { max-width: 760px; margin: 40px auto 0; padding: 0 16px; text-align: center; }
.privado .tarjeta { text-align: left; }
@media (max-width: 640px) {
  .heroe h1 { font-size: 38px; }
  .heroe .lema { font-size: 19px; }
  .capturas { grid-template-columns: 1fr; justify-items: center; }
  .capturas img { max-width: 340px; }
  .capturas .mac { max-width: 100%; }
}