/* Página comercial de Nexum. */
:root {
  --tinta: #0f172a; --texto: #334155; --suave: #64748b; --linea: #e2e8f0; --fondo: #f6f8fb;
  --marca: #0f766e; --marca-2: #14b8a6; --brillo: #22f2b3; --oscuro: #0b1220;
  --radio: 18px; --sombra: 0 20px 50px rgba(15, 23, 42, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: #fff; color: var(--texto); font: 16px/1.65 "Plus Jakarta Sans", -apple-system, "Segoe UI", Roboto, Arial, sans-serif; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--marca); }
h1, h2, h3 { color: var(--tinta); line-height: 1.15; margin: 0; }
.contenido { margin: 0 auto; max-width: 1180px; padding: 0 20px; }
.etiqueta { color: var(--marca); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.boton { align-items: center; border: 0; border-radius: 12px; cursor: pointer; display: inline-flex; font: inherit; font-weight: 700; gap: 8px; justify-content: center; min-height: 50px; padding: 12px 24px; text-decoration: none; transition: transform .15s, box-shadow .15s, background .15s; }
.boton:hover { transform: translateY(-1px); }
.boton--principal { background: linear-gradient(135deg, var(--marca), var(--marca-2)); box-shadow: 0 10px 24px rgba(15, 118, 110, .3); color: #fff; }
.boton--claro { background: #fff; border: 1px solid var(--linea); color: var(--tinta); }
.boton--whatsapp { background: #25d366; color: #fff; }
.boton--borde { background: transparent; border: 1px solid rgba(255, 255, 255, .35); color: #fff; }

/* Barra superior */
.barra { background: rgba(255, 255, 255, .92); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--linea); position: sticky; top: 0; z-index: 20; }
.barra .contenido { align-items: center; display: flex; gap: 24px; height: 72px; }
.barra__logo img { height: 54px; width: auto; }
.barra nav { display: flex; gap: 26px; margin-left: auto; }
.barra nav a { color: var(--texto); font-size: 15px; font-weight: 600; text-decoration: none; }
.barra nav a:hover { color: var(--marca); }
.barra .boton { min-height: 44px; padding: 10px 18px; }
.barra__menu { background: none; border: 1px solid var(--linea); border-radius: 10px; display: none; height: 42px; margin-left: auto; width: 46px; }
.barra__menu span, .barra__menu span::before, .barra__menu span::after { background: var(--tinta); border-radius: 2px; content: ""; display: block; height: 2px; margin: 0 auto; position: relative; width: 20px; }
.barra__menu span::before { position: absolute; top: -6px; }
.barra__menu span::after { position: absolute; top: 6px; }

/* Portada */
.portada { background: radial-gradient(1100px 520px at 80% -10%, rgba(34, 242, 179, .18), transparent 60%), linear-gradient(180deg, #f2fbf9 0%, #fff 70%); overflow: hidden; padding: 72px 0 72px; }
.portada .contenido { align-items: center; display: grid; gap: 48px; grid-template-columns: 1fr 1.15fr; }
.portada h1 { font-size: clamp(36px, 5vw, 58px); font-weight: 800; letter-spacing: -.02em; margin: 14px 0 18px; }
.portada h1 em { background: linear-gradient(120deg, var(--marca), var(--marca-2)); -webkit-background-clip: text; background-clip: text; color: transparent; font-style: normal; }
.portada p.lead { color: var(--texto); font-size: 19px; margin: 0 0 28px; max-width: 540px; }
.portada__botones { display: flex; flex-wrap: wrap; gap: 12px; }
.portada__sellos { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 28px; }
.portada__sellos span { align-items: center; color: var(--texto); display: inline-flex; font-size: 14px; font-weight: 600; gap: 8px; }
.portada__sellos i { color: var(--marca); flex: none; font-size: 18px; }
.vista { position: relative; }
.ventana { background: #fff; border: 1px solid var(--linea); border-radius: 14px; box-shadow: var(--sombra); overflow: hidden; }
.ventana__barra { align-items: center; background: #eef2f7; display: flex; gap: 7px; height: 30px; padding: 0 12px; }
.ventana__barra i { background: #cbd5e1; border-radius: 50%; display: block; height: 10px; width: 10px; }
.ventana__barra b { background: #fff; border-radius: 6px; color: var(--suave); flex: 1; font-size: 11px; font-weight: 500; margin-left: 10px; max-width: 280px; padding: 2px 10px; }
.vista .telefono { border: 7px solid var(--oscuro); border-radius: 28px; bottom: -44px; box-shadow: 0 24px 50px rgba(15, 23, 42, .3); overflow: hidden; position: absolute; right: -24px; width: 158px; }

/* Franja de beneficios */
.franja { padding: 64px 0 24px; }
.franja__grid { display: grid; gap: 18px; grid-template-columns: repeat(4, 1fr); }
.franja__item { background: var(--fondo); border: 1px solid var(--linea); border-radius: var(--radio); padding: 22px; }
.franja__icono { align-items: center; background: #fff; border-radius: 12px; box-shadow: 0 6px 16px rgba(15, 23, 42, .08); color: var(--marca); display: inline-flex; font-size: 22px; height: 46px; justify-content: center; margin-bottom: 14px; width: 46px; }
.franja__item h3 { font-size: 17px; margin-bottom: 6px; }
.franja__item p { color: var(--suave); font-size: 14.5px; margin: 0; }

/* Secciones con captura */
.seccion { padding: 88px 0; }
.seccion--gris { background: var(--fondo); }
.seccion__titulo { margin: 0 auto 56px; max-width: 720px; text-align: center; }
.seccion__titulo h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: -.015em; margin: 10px 0 14px; }
.seccion__titulo p { color: var(--suave); font-size: 17px; margin: 0; }
.modulo { align-items: center; display: grid; gap: 56px; grid-template-columns: 1fr 1.25fr; margin-bottom: 96px; }
.modulo:last-child { margin-bottom: 0; }
.modulo--invertido .modulo__texto { order: 2; }
.modulo--solo { grid-template-columns: 1fr; max-width: 820px; margin-left: auto; margin-right: auto; }
.seccion--oscuro { background: var(--oscuro); color: #cbd5e1; }
.seccion--oscuro h3, .seccion--oscuro h2 { color: #fff; }
.seccion--oscuro .modulo__texto > p { color: #cbd5e1; }
.seccion--oscuro .lista-check li { color: #e2e8f0; }
.modulo__texto h3 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 800; letter-spacing: -.01em; margin: 10px 0 14px; }
.modulo__texto > p { color: var(--suave); font-size: 16.5px; margin: 0 0 20px; }
.lista-check { display: grid; gap: 10px; list-style: none; margin: 0; padding: 0; }
.lista-check li { padding-left: 32px; position: relative; }
.lista-check li::before { background: #ccfbf1 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f766e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center / 13px no-repeat; border-radius: 50%; content: ""; height: 22px; left: 0; position: absolute; top: 2px; width: 22px; }
.captura { cursor: zoom-in; }
.captura:hover .ventana { box-shadow: 0 28px 60px rgba(15, 23, 42, .18); }

/* Todos los módulos */
.modulos-grid { display: grid; gap: 14px; grid-template-columns: repeat(4, 1fr); }
.modulos-grid div { align-items: center; background: #fff; border: 1px solid var(--linea); border-radius: 14px; color: var(--tinta); display: flex; font-size: 14.5px; font-weight: 600; gap: 12px; padding: 14px 16px; }
.modulos-grid i { color: var(--marca); flex: none; font-size: 19px; }

/* Tienda en línea */
.tienda { background: linear-gradient(135deg, #0b1220, #0f3b3a 60%, #0f766e); border-radius: 26px; color: #d7f5ef; display: grid; gap: 40px; grid-template-columns: 1.1fr 1fr; overflow: hidden; padding: 56px; position: relative; }
.tienda h2 { color: #fff; font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; margin: 10px 0 14px; }
.tienda .etiqueta { color: var(--brillo); }
.tienda p { margin: 0 0 22px; }
.tienda__grid { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
.tienda__grid div { background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .12); border-radius: 14px; padding: 16px; }
.tienda__grid strong { color: #fff; display: block; font-size: 15px; margin-bottom: 4px; }
.tienda__grid span { color: #a7d9cf; font-size: 13.5px; }

/* Precios */
.planes { display: grid; gap: 18px; grid-template-columns: repeat(4, 1fr); }
.planes--1 { grid-template-columns: minmax(0, 420px); justify-content: center; }
.planes--2 { grid-template-columns: repeat(2, minmax(0, 420px)); justify-content: center; }
.planes--3 { grid-template-columns: repeat(3, 1fr); }
.plan { background: #fff; border: 1px solid var(--linea); border-radius: var(--radio); display: flex; flex-direction: column; padding: 28px 22px; position: relative; }
.plan--destacado { border: 2px solid var(--marca); box-shadow: 0 24px 50px rgba(15, 118, 110, .16); }
.plan__cinta { background: linear-gradient(135deg, var(--marca), var(--marca-2)); border-radius: 999px; color: #fff; font-size: 12px; font-weight: 800; left: 50%; padding: 5px 14px; position: absolute; top: -14px; transform: translateX(-50%); white-space: nowrap; }
.plan h3 { font-size: 20px; }
.plan__para { color: var(--suave); font-size: 14px; margin: 6px 0 16px; min-height: 44px; }
.plan__precio { color: var(--tinta); font-size: 34px; font-weight: 800; letter-spacing: -.02em; }
.plan__precio small { color: var(--suave); font-size: 15px; font-weight: 600; letter-spacing: 0; }
.plan__limites { background: var(--fondo); border-radius: 12px; display: grid; gap: 4px; font-size: 14px; margin: 18px 0; padding: 12px 14px; }
.plan__limites b { color: var(--tinta); }
.plan ul { align-content: start; flex: 1; font-size: 14px; margin-bottom: 22px; }
.plan .boton { width: 100%; }
.precios__nota { color: var(--suave); font-size: 14.5px; margin: 26px auto 0; max-width: 820px; text-align: center; }

/* Preguntas */
.preguntas { display: grid; gap: 12px; margin: 0 auto; max-width: 860px; }
.preguntas details { background: #fff; border: 1px solid var(--linea); border-radius: 14px; padding: 4px 22px; }
.preguntas summary { color: var(--tinta); cursor: pointer; font-weight: 700; list-style: none; padding: 16px 28px 16px 0; position: relative; }
.preguntas summary::-webkit-details-marker { display: none; }
.preguntas summary::after { color: var(--marca); content: "+"; font-size: 24px; font-weight: 600; line-height: 1; position: absolute; right: 0; top: 14px; }
.preguntas details[open] summary::after { content: "–"; }
.preguntas p { color: var(--suave); margin: 0 0 18px; }

/* Demo y contacto */
.demo { display: grid; gap: 40px; grid-template-columns: 1fr 1.1fr; }
.demo__info h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; margin: 10px 0 14px; }
.demo__info > p { color: var(--suave); font-size: 17px; margin: 0 0 26px; }
.contacto { display: grid; gap: 12px; }
.contacto a { align-items: center; background: #fff; border: 1px solid var(--linea); border-radius: 14px; color: var(--tinta); display: flex; gap: 14px; padding: 14px 16px; text-decoration: none; }
.contacto a:hover { border-color: var(--marca-2); }
.contacto small { color: var(--suave); display: block; font-size: 13px; }
.contacto__icono { align-items: center; border-radius: 12px; color: #fff; display: inline-flex; flex: none; font-size: 21px; height: 44px; justify-content: center; width: 44px; }
.formulario { background: #fff; border: 1px solid var(--linea); border-radius: 22px; box-shadow: var(--sombra); padding: 30px; }
.formulario h3 { font-size: 22px; margin-bottom: 4px; }
.formulario > p { color: var(--suave); font-size: 14.5px; margin: 0 0 20px; }
.campos { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
.campos .completo { grid-column: 1 / -1; }
label { color: var(--tinta); display: block; font-size: 14px; font-weight: 700; margin-bottom: 6px; }
input, select, textarea { background: #fff; border: 1px solid #cbd5e1; border-radius: 10px; color: var(--tinta); font: inherit; font-size: 15px; padding: 11px 12px; width: 100%; }
input:focus, select:focus, textarea:focus { border-color: var(--marca-2); box-shadow: 0 0 0 3px rgba(20, 184, 166, .18); outline: none; }
textarea { min-height: 90px; resize: vertical; }
.formulario .boton { margin-top: 18px; width: 100%; }
.formulario__aviso { color: var(--suave); font-size: 13px; margin: 10px 0 0; text-align: center; }
.formulario__estado { font-size: 14.5px; font-weight: 600; margin: 12px 0 0; min-height: 1px; text-align: center; }
.formulario__estado.ok { color: var(--marca); }
.formulario__estado.error { color: #b91c1c; }
.oculto { height: 1px; left: -9999px; overflow: hidden; position: absolute; width: 1px; }
.pie__texto { font-size: 14.5px; margin: 16px 0 0; max-width: 360px; }
.barra__logo { color: var(--tinta); font-size: 22px; text-decoration: none; }

/* Llamado final y pie */
.cierre { background: linear-gradient(135deg, var(--marca), var(--marca-2)); border-radius: 26px; color: #e6fffa; padding: 52px; text-align: center; }
.cierre h2 { color: #fff; font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 12px; }
.cierre p { margin: 0 auto 26px; max-width: 620px; }
.cierre .boton--claro { border: 0; }
footer { background: var(--oscuro); color: #94a3b8; padding: 52px 0 36px; }
footer .contenido { display: grid; gap: 30px; grid-template-columns: 1.4fr 1fr 1fr; }
footer img { height: 62px; width: auto; }
footer h4 { color: #fff; font-size: 15px; margin: 0 0 12px; }
footer a { color: #cbd5e1; display: block; font-size: 14.5px; margin-bottom: 8px; text-decoration: none; }
footer a:hover { color: var(--brillo); }
footer .legal { border-top: 1px solid #1e293b; font-size: 13.5px; grid-column: 1 / -1; margin-top: 10px; padding-top: 22px; }

/* Ampliar capturas */
dialog.ampliar { background: transparent; border: 0; max-height: 92vh; max-width: min(1400px, 94vw); padding: 0; }
dialog.ampliar::backdrop { background: rgba(2, 6, 23, .82); }
dialog.ampliar img { border-radius: 12px; max-height: 88vh; object-fit: contain; }
dialog.ampliar button { background: #fff; border: 0; border-radius: 999px; cursor: pointer; font-size: 22px; height: 40px; position: fixed; right: 18px; top: 18px; width: 40px; }
.whatsapp-flotante { align-items: center; background: #25d366; border-radius: 50%; bottom: 22px; box-shadow: 0 10px 28px rgba(0, 0, 0, .25); color: #fff; display: flex; font-size: 30px; height: 58px; justify-content: center; position: fixed; right: 22px; text-decoration: none; width: 58px; z-index: 30; }

@media (max-width: 1080px) {
  .franja__grid, .modulos-grid { grid-template-columns: repeat(2, 1fr); }
  .planes, .planes--3 { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
}
@media (max-width: 900px) {
  .barra nav, .barra__cta { display: none; }
  .barra__menu { display: block; }
  .barra.abierta nav { background: #fff; border-bottom: 1px solid var(--linea); display: flex; flex-direction: column; gap: 0; left: 0; padding: 8px 20px 16px; position: absolute; right: 0; top: 72px; }
  .barra.abierta nav a { border-bottom: 1px solid var(--linea); padding: 14px 0; }
  .portada { padding-top: 44px; }
  .portada .contenido, .modulo, .tienda, .demo { grid-template-columns: 1fr; }
  .modulo { gap: 30px; margin-bottom: 72px; }
  .modulo--invertido .modulo__texto { order: 0; }
  .vista .telefono { bottom: -30px; right: -6px; width: 120px; }
  .tienda { padding: 34px 24px; }
  footer .contenido { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .franja__grid, .modulos-grid, .planes, .planes--2, .planes--3, .tienda__grid, .campos { grid-template-columns: 1fr; }
  .seccion { padding: 64px 0; }
  .portada__botones .boton { width: 100%; }
  .cierre { padding: 36px 22px; }
  .formulario { padding: 22px; }
}