/* /empezar: entrada con registro. Mismos colores que el sitio y el panel. Siempre claro. */
:root {
  --fondo: #F6F5FB;
  --fondo2: #ECEAF4;
  --tinta: #16131F;
  --tinta2: #4A4658;
  --tinta3: #646177;
  --linea: #DDDAE9;
  --marca: #3B1FA3;
  --marca2: #4A2DC4;
  --acento: #D5CAFF;
  --acento-suave: #F1EDFF;
  --blanco: #FFFFFF;
  --peligro: #9B2C1A;
  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: 17px/1.6 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.envoltura { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.marca { display: inline-flex; align-items: baseline; text-decoration: none; font-weight: 700; font-size: 22px; letter-spacing: -.02em; }
.marca b { font-weight: 700; background: var(--acento); color: var(--marca); padding: 0 5px; border-radius: 6px; margin-left: 1px; }
.cabecera { display: flex; align-items: center; justify-content: space-between; padding-top: 22px; padding-bottom: 22px; }
.entrar { font-weight: 600; font-size: 15px; text-decoration: none; color: var(--marca); }

.boton, .boton-borde { display: inline-flex; justify-content: center; align-items: center; gap: 8px; border-radius: 999px; padding: 13px 22px; font: inherit; font-weight: 600; font-size: 16px; text-decoration: none; cursor: pointer; transition: background .15s, transform .15s; }
.boton { background: var(--marca); color: #fff; border: 0; }
.boton:hover { background: var(--marca2); transform: translateY(-1px); }
.boton:disabled { opacity: .6; cursor: default; transform: none; }
.boton-borde { background: var(--blanco); color: var(--marca); border: 1px solid var(--marca); }
.boton-borde:hover { background: var(--acento-suave); }

/* ——— Hero ——— */
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 48px; align-items: start; padding-top: 28px; padding-bottom: 72px; }
.etiqueta { display: inline-block; font-size: 14px; font-weight: 600; color: var(--marca); background: var(--acento-suave); border-radius: 999px; padding: 4px 12px; }
.hero h1 { font-size: clamp(40px, 5.6vw, 66px); line-height: 1; letter-spacing: -.035em; margin: 18px 0 18px; font-weight: 700; }
.hero h1 em { font-style: normal; color: var(--marca); }
.bajada { font-size: 19px; color: var(--tinta2); margin: 0 0 30px; max-width: 580px; }

.demo { background: var(--blanco); border: 1px solid var(--linea); border-radius: 22px; overflow: hidden; box-shadow: 0 30px 60px -40px rgba(59, 31, 163, .45); max-width: 600px; }
.demo-barra { display: flex; align-items: center; gap: 6px; padding: 12px 16px; border-bottom: 1px solid var(--fondo2); font-size: 14px; }
.demo-barra span { width: 10px; height: 10px; border-radius: 50%; background: var(--fondo2); }
.demo-barra strong { margin-left: 8px; color: var(--marca); }
.demo-charla { padding: 20px 18px 22px; min-height: 230px; font-size: 15.5px; }
.d-yo { margin-left: auto; width: fit-content; max-width: 85%; background: var(--fondo); border: 1px solid var(--linea); border-radius: 18px 18px 6px 18px; padding: 9px 14px; margin-bottom: 16px; }
.d-ia { display: grid; grid-template-columns: 28px 1fr; gap: 10px; }
.d-ia i { width: 28px; height: 28px; border-radius: 9px; background: var(--marca); }
.d-ia p { margin: 2px 0 0; white-space: pre-line; min-height: 1.6em; }

/* ——— Registro ——— */
.registro { position: sticky; top: 20px; background: var(--blanco); border: 1px solid var(--linea); border-radius: 28px; padding: 28px 24px 22px; box-shadow: 0 30px 60px -45px rgba(22, 19, 31, .4); }
.registro h2 { margin: 0; font-size: 28px; letter-spacing: -.025em; line-height: 1.1; }
.registro-nota { margin: 6px 0 18px; color: var(--tinta3); font-size: 15px; }
.registro label { display: block; font-size: 14px; font-weight: 600; color: var(--tinta2); margin-bottom: 12px; }
.registro label span { font-weight: 400; color: var(--tinta3); }
.registro input { display: block; width: 100%; margin-top: 5px; font: inherit; font-size: 16px; border: 1px solid var(--linea); border-radius: 12px; padding: 11px 12px; background: var(--fondo); color: var(--tinta); }
.registro input:focus { outline: 0; border-color: var(--marca); background: var(--blanco); }
.registro .boton { width: 100%; margin-top: 6px; }
.trampa { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.error { color: var(--peligro); font-size: 14px; margin: 4px 0 6px; }
.legal-form { font-size: 13px; color: var(--tinta3); margin: 12px 0 0; text-align: center; }
.listo p { color: var(--tinta2); font-size: 15.5px; }
.link-caja { display: flex; gap: 8px; align-items: center; background: var(--fondo); border: 1px solid var(--linea); border-radius: 12px; padding: 8px 8px 8px 12px; margin: 14px 0 12px; }
.link-caja code { flex: 1; min-width: 0; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.boton-chico { border: 0; background: var(--marca); color: #fff; border-radius: 8px; padding: 6px 12px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.listo .boton, .listo .boton-borde { width: 100%; margin-top: 8px; }

/* ——— Secciones ——— */
.seccion { padding-top: 56px; padding-bottom: 24px; }
.seccion h2, .cierre h2 { font-size: clamp(30px, 3.6vw, 42px); letter-spacing: -.03em; line-height: 1.05; margin: 0 0 10px; }
.seccion-bajada { color: var(--tinta2); margin: 0 0 26px; }
.usos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 24px; }
.usos article { background: var(--blanco); border: 1px solid var(--linea); border-radius: 20px; padding: 20px; }
.usos h3 { margin: 0 0 6px; font-size: 18px; }
.usos p { margin: 0; color: var(--tinta2); font-size: 15.5px; }
.planes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.plan { position: relative; display: flex; flex-direction: column; background: var(--blanco); border: 1px solid var(--linea); border-radius: 22px; padding: 24px 20px 20px; }
.plan.destacado { border: 2px solid var(--marca); }
.plan-marca { position: absolute; top: -12px; left: 20px; background: var(--marca); color: #fff; font-size: 13px; font-weight: 600; border-radius: 999px; padding: 2px 12px; }
.plan h3 { margin: 0; font-size: 21px; }
.plan-precio { margin: 6px 0 4px; color: var(--tinta3); }
.plan-precio strong { font-size: 34px; letter-spacing: -.03em; color: var(--tinta); }
.plan-resumen { margin: 0 0 14px; color: var(--tinta2); font-size: 15.5px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 20px; display: grid; gap: 8px; flex: 1; font-size: 15.5px; }
.plan li { padding-left: 24px; position: relative; }
.plan li::before { content: ''; position: absolute; left: 2px; top: 6px; width: 11px; height: 6px; border-left: 2px solid var(--marca); border-bottom: 2px solid var(--marca); transform: rotate(-45deg); }
.cierre { text-align: center; padding-top: 72px; padding-bottom: 72px; }
.cierre h2 { margin-bottom: 22px; }

.pie { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; justify-content: space-between; border-top: 1px solid var(--linea); padding-top: 28px; padding-bottom: 36px; }
.pie nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 15px; color: var(--tinta2); }
.legal { width: 100%; margin: 0; font-size: 13px; color: var(--tinta3); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding-bottom: 40px; }
  .registro { position: static; }
  .usos, .planes { grid-template-columns: 1fr; }
  .planes { gap: 22px; }
  .bajada { font-size: 17px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } html { scroll-behavior: auto; } }