:root {
  --bg: #f5f8fc;
  --ink: #0f1b2d;
  --muted: #56657d;
  --line: #e2e9f3;
  --card: #ffffff;
  --accent: #2f6bff;
  --accent-2: #8b5cf6;
  --accent-ink: #ffffff;
  --soft: #e9f0ff;
  --sky-top: #d6e5ff;
  --nube: rgba(255, 255, 255, .9);
  --term: #0d1524;
  --term-ink: #d6e2f5;
  --sombra: 0 1px 2px rgba(15, 27, 45, .05), 0 10px 30px -12px rgba(15, 27, 45, .12);
  --radio: 18px;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --titulo: Sora, Inter, system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a111d;
    --ink: #e7eef9;
    --muted: #97a8c2;
    --line: #1c2940;
    --card: #101a2b;
    --accent: #6d9bff;
    --accent-2: #b08cff;
    --accent-ink: #081020;
    --soft: #16233a;
    --sky-top: #14233d;
    --nube: rgba(255, 255, 255, .05);
    --term: #070d18;
    --sombra: none;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
code {
  font-family: var(--mono);
  font-size: .86em;
  background: var(--soft);
  padding: .12em .42em;
  border-radius: 6px;
}

/* --- barra superior --- */
.barra {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 5vw, 48px);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font: 700 18px/1 var(--titulo);
  letter-spacing: -.01em;
}
.marca span {
  font: 500 12px/1 Inter, sans-serif;
  color: var(--muted);
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.pastilla {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font: 500 13px/1 var(--mono);
  color: var(--muted);
}
.pastilla i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, .18);
  animation: latido 2.4s ease-in-out infinite;
}

/* --- cabecera --- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(80px, 13vw, 150px) clamp(16px, 5vw, 48px) clamp(72px, 11vw, 130px);
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--bg) 100%);
  text-align: center;
}
.hero > :not(.nubes) {
  position: relative;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}
.antetitulo {
  margin-top: 0;
  margin-bottom: 20px;
  font: 500 14px/1 var(--mono);
  color: var(--accent);
}
h1 {
  margin-top: 0;
  margin-bottom: 24px;
  font: 700 clamp(40px, 7.2vw, 78px)/1.03 var(--titulo);
  letter-spacing: -.035em;
}
h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.entrada {
  max-width: 620px;
  margin-top: 0;
  margin-bottom: 36px;
  font-size: clamp(17px, 2.2vw, 20px);
  color: var(--muted);
}
.entrada strong { color: var(--ink); font-weight: 600; }
.acciones { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.boton {
  display: inline-block;
  padding: 13px 22px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease;
}
.boton:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -8px color-mix(in srgb, var(--accent) 60%, transparent);
}
.boton--suave { background: var(--card); color: var(--ink); border: 1px solid var(--line); }

/* nubes: una pastilla con dos bultos encima */
.nubes span {
  position: absolute;
  left: 0;
  width: 180px;
  height: 56px;
  border-radius: 999px;
  background: var(--nube);
  animation: flota var(--t) linear infinite;
  animation-delay: var(--d);
}
.nubes span::before,
.nubes span::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: inherit;
}
.nubes span::before { width: 78px; height: 78px; left: 28px; top: -38px; }
.nubes span::after  { width: 58px; height: 58px; left: 94px; top: -24px; }
.nubes span:nth-child(1) { top: 16%; --s: 1.1;  --t: 70s; --d: -12s; }
.nubes span:nth-child(2) { top: 44%; --s: .7;   --t: 55s; --d: -40s; }
.nubes span:nth-child(3) { top: 70%; --s: 1.35; --t: 90s; --d: -65s; }
.nubes span:nth-child(4) { top: 30%; --s: .55;  --t: 48s; --d: -5s; }

/* --- secciones --- */
.bloque {
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(56px, 8vw, 100px) clamp(16px, 5vw, 48px);
}
.etiqueta {
  margin: 0 0 10px;
  text-align: center;
  font: 500 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent);
}
h2 {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
  font: 700 clamp(28px, 4vw, 42px)/1.15 var(--titulo);
  letter-spacing: -.025em;
}
.rejilla {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.tarjeta {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radio);
  padding: 26px 24px;
  box-shadow: var(--sombra);
  transition: transform .2s ease, border-color .2s ease;
}
.tarjeta:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
.tarjeta h3 { margin: 16px 0 8px; font: 600 18px/1.3 var(--titulo); letter-spacing: -.01em; }
.tarjeta p { margin: 0; font-size: 15.5px; color: var(--muted); }
.num {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: var(--soft);
  color: var(--accent);
  font: 700 15px/1 var(--titulo);
}
.icono {
  width: 36px;
  height: 36px;
  padding: 7px;
  border-radius: 11px;
  background: var(--soft);
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- terminal --- */
.bloque--terminal { padding-top: 0; }
.terminal {
  max-width: 840px;
  margin: 0 auto;
  background: var(--term);
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 34px 70px -28px rgba(8, 16, 32, .55);
}
.terminal__barra {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, .035);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.terminal__barra i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.terminal__barra i:nth-child(2) { background: #febc2e; }
.terminal__barra i:nth-child(3) { background: #28c840; }
.terminal__barra span { margin-left: auto; font: 400 12px/1 var(--mono); color: #6f7f99; }
.terminal__texto {
  margin: 0;
  padding: 22px 24px 26px;
  overflow-x: auto;
  font: 400 13.5px/1.75 var(--mono);
  color: var(--term-ink);
}
.terminal__texto code { background: none; padding: 0; font-size: inherit; }
.l { display: block; transition: opacity .3s ease, transform .3s ease; }
.js .l.oculta { opacity: 0; transform: translateY(4px); }
.p  { color: #7d8ba3; }
.cy { color: #67d4f1; }
.ve { color: #4ade80; }
.am { color: #facc15; }
.gr { color: #64748b; }

/* --- pie --- */
.pie {
  border-top: 1px solid var(--line);
  padding: 30px 16px;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}
.pie p { margin: 0; }

@keyframes flota {
  from { transform: translateX(-260px) scale(var(--s)); }
  to   { transform: translateX(calc(100vw + 60px)) scale(var(--s)); }
}
@keyframes latido {
  50% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
}

@media (max-width: 560px) {
  .marca span { display: none; }
  .terminal__texto { font-size: 12px; padding: 18px 16px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .nubes span, .pastilla i { animation: none; }
  .nubes span { transform: translateX(calc(var(--s) * 30vw)) scale(var(--s)); }
  .tarjeta, .boton, .l { transition: none; }
}