:root {
  color-scheme: dark;
  --fondo: #070b12;
  --fondo-2: #0e1830;
  --superficie: #111b2c;
  --superficie-2: #16253d;
  --texto: #edf5ff;
  --muted: #a8b7ca;
  --linea: #29415d;
  --cian: #38d6ff;
  --verde: #34d399;
  --violeta: #7c8cff;
  --ambar: #f5b84b;
  --sombra: 0 18px 50px #0005;
  --radio: 18px;
}

/* Temas y base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html[data-theme="light"] {
  color-scheme: light;
  --fondo: #f6f8fc;
  --fondo-2: #e9f0fb;
  --superficie: #fff;
  --superficie-2: #f1f5fb;
  --texto: #0b1220;
  --muted: #4b5c72;
  --linea: #d4deeb;
  --cian: #0f6f8f;
  --verde: #0b7a55;
  --ambar: #9a6500;
  --sombra: 0 16px 40px #30476d1c;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --fondo: #f6f8fc;
    --fondo-2: #e9f0fb;
    --superficie: #fff;
    --superficie-2: #f1f5fb;
    --texto: #0b1220;
    --muted: #4b5c72;
    --linea: #d4deeb;
    --cian: #0f6f8f;
    --verde: #0b7a55;
    --ambar: #9a6500;
    --sombra: 0 16px 40px #30476d1c;
  }
}
body { margin: 0; background: radial-gradient(circle at 85% 0, #34d39918, transparent 30rem), radial-gradient(circle at 5% 30%, #38d6ff0d, transparent 26rem), linear-gradient(145deg, var(--fondo), var(--fondo-2)); color: var(--texto); font: 16px/1.6 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; overflow-x: hidden; }
a { color: var(--cian); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--cian); outline-offset: 3px; }
.contenedor { width: min(1120px, calc(100% - 32px)); margin: auto; }
.icono { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; vertical-align: middle; }
.salto { position: absolute; left: 12px; top: -60px; background: var(--cian); color: #06101c; padding: 8px 14px; border-radius: 8px; font-weight: 700; z-index: 5; }
.salto:focus { top: 12px; }

/* Cabecera */
.cabecera { position: sticky; top: 0; z-index: 4; background: color-mix(in srgb, var(--fondo) 90%, transparent); backdrop-filter: blur(16px); border-bottom: 1px solid var(--linea); }
.barra { width: min(1180px, calc(100% - 28px)); margin: auto; min-height: 64px; display: flex; align-items: center; gap: 22px; }
.marca { color: var(--texto); font-size: 1.05rem; font-weight: 850; letter-spacing: .06em; white-space: nowrap; }
.nav { display: flex; gap: 16px; flex: 1; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: var(--muted); white-space: nowrap; font-size: .9rem; }
.nav a:hover { color: var(--texto); }
.tema { border: 1px solid var(--linea); background: var(--superficie); color: var(--texto); border-radius: 999px; padding: 7px 11px; cursor: pointer; white-space: nowrap; }
.ecosistema { margin: 0; padding: 7px 16px; text-align: center; border-top: 1px solid var(--linea); color: var(--muted); font-size: .82rem; }

/* Hero y elementos comunes */
.hero { padding: 56px 0 36px; }
.hero-copy { max-width: 800px; }
.hero-art { display: block; margin-top: 42px; }
.hero-art img { display: block; width: 100%; height: auto; border: 1px solid var(--linea); border-radius: var(--radio); box-shadow: var(--sombra); }
.ceja { color: var(--verde); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.15; }
h1 { max-width: 980px; margin: 10px 0 18px; font-size: clamp(2.4rem, 4.6vw, 3.9rem); letter-spacing: -.045em; }
h2 { margin: 8px 0 12px; font-size: clamp(2rem, 4vw, 3.3rem); letter-spacing: -.04em; }
h3 { margin: 10px 0; }
.intro { max-width: 680px; color: var(--muted); font-size: 1.18rem; }
.acciones { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.boton { display: inline-block; padding: 11px 17px; border: 1px solid var(--linea); border-radius: 10px; font-weight: 750; }
.primario { background: var(--cian); color: #06101c; }
.secundario { color: var(--texto); background: var(--superficie); }
.seccion { padding: 92px 0; }
.encabezado { max-width: 720px; margin-bottom: 34px; }
.encabezado > p:last-child { color: var(--muted); }
code { padding: 2px 5px; border-radius: 5px; background: var(--superficie-2); color: var(--ambar); }

/* Tarjetas, capturas y Ping */
.rejilla, .mini-grid, .ecosistema-grid { display: grid; gap: 16px; }
.rejilla { grid-template-columns: repeat(4, 1fr); }
.tarjeta, .mini-grid article, .eco-card, .paso, .faq details { background: var(--superficie); border: 1px solid var(--linea); border-radius: var(--radio); }
.tarjeta { padding: 22px; }
.tarjeta p, .mini-grid p, .eco-card p { color: var(--muted); }
.tarjeta .icono, .mini-grid .icono, .eco-card svg { color: var(--cian); }
.verde { color: var(--verde) !important; } .violeta { color: var(--violeta) !important; } .ambar { color: var(--ambar) !important; }
.captura-panel { max-width: 800px; margin: 32px auto 0; text-align: center; }
.captura-panel img, .usar-grid figure img, .aria-layout figure img { display: block; width: 100%; height: auto; border: 1px solid var(--linea); border-radius: 14px; box-shadow: var(--sombra); }
figcaption { margin-top: 8px; color: var(--muted); font-size: .85rem; }
.ping { display: block; width: 492px; max-width: min(100%, 420px); height: auto; margin-top: 42px; margin-bottom: 0; }
.izquierda { margin-right: auto; } .derecha { margin-left: auto; }

/* Diagrama */
.banda { background: color-mix(in srgb, var(--superficie) 45%, transparent); border-top: 1px solid var(--linea); border-bottom: 1px solid var(--linea); }
.diagrama { display: flex; align-items: center; justify-content: center; gap: 12px; }
.nodo { min-width: 120px; padding: 16px 10px; text-align: center; background: var(--superficie); border: 1px solid var(--linea); border-radius: 14px; }
.nodo svg { display: block; width: 28px; height: 28px; margin: 0 auto 7px; fill: none; stroke: var(--cian); stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
.nodo strong, .nodo small { display: block; } .nodo small { color: var(--muted); font-size: .76rem; }
.destacado { border-color: var(--cian); box-shadow: 0 0 0 3px #38d6ff18; }
.shield { border-color: var(--verde); }
.salidas { display: flex; gap: 10px; }
.flecha { color: var(--cian); font-size: 1.6rem; }

/* Instalación */
.pasos { display: grid; gap: 12px; }
.paso { display: grid; grid-template-columns: 58px 1fr; gap: 16px; padding: 22px; }
.rapido { list-style: none; margin: 0; padding: 0; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rapido .paso h3 { margin-top: 0; }
.paso > div, .rapido > li { min-width: 0; }
.numero { color: var(--verde); font-weight: 850; font-size: 1.2rem; }
.comando { display: flex; align-items: stretch; gap: 10px; margin: 14px 0; }
pre { flex: 1; min-width: 0; margin: 0; padding: 14px; overflow-x: auto; background: #05080d; border-radius: 9px; color: #d7e5f5; }
pre code { padding: 0; background: none; color: inherit; }
.copiar { border: 1px solid var(--linea); border-radius: 9px; background: var(--superficie-2); color: var(--texto); padding: 0 14px; cursor: pointer; }
.importante { border-color: var(--ambar); }
.nota { margin-top: 20px; padding: 20px; background: var(--superficie-2); border-radius: var(--radio); }
.compacto { margin-bottom: 0; }
.estado { min-height: 1.6em; color: var(--verde); font-weight: 700; }

/* Uso, ARIA y preguntas */
.usar-grid, .aria-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.aviso { padding: 12px; border-left: 3px solid var(--ambar); background: var(--superficie-2); }
.mini-grid { grid-template-columns: repeat(3, 1fr); margin-top: 30px; }
.mini-grid article, .eco-card { padding: 20px; }
.ecosistema-grid { grid-template-columns: repeat(3, 1fr); margin-top: 30px; }
.eco-card { color: var(--texto); }
.eco-card svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }
.faq { display: grid; gap: 10px; }
.faq details { padding: 16px 20px; }
.faq summary { cursor: pointer; font-weight: 750; }
.faq p { color: var(--muted); }
.pie { padding: 28px 0; border-top: 1px solid var(--linea); }
.pie .contenedor { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; align-items: center; }

/* Adaptación móvil */
@media (max-width: 900px) {
  .rapido { grid-template-columns: minmax(0, 1fr); }
  .rejilla { grid-template-columns: repeat(2, 1fr); }
  .diagrama { flex-direction: column; }
  .flecha { transform: rotate(90deg); }
  .salidas { flex-direction: column; }
}
@media (max-width: 700px) {
  .hero { padding-top: 48px; }
  .barra { flex-wrap: wrap; gap: 12px; padding-top: 10px; }
  .nav { order: 3; flex-basis: 100%; padding-bottom: 8px; }
  .tema { margin-left: auto; }
  .usar-grid, .aria-layout, .mini-grid, .ecosistema-grid { grid-template-columns: 1fr; }
  .ping { max-width: 100%; }
}
@media (max-width: 480px) {
  .contenedor { width: min(100% - 24px, 1120px); }
  .rejilla { grid-template-columns: 1fr; }
  .seccion { padding: 64px 0; }
  h1 { font-size: 2.45rem; }
  .paso { grid-template-columns: 38px 1fr; padding: 17px 14px; }
  .comando { display: block; }
  .copiar { margin-top: 10px; padding: 8px 14px; }
  .ecosistema { font-size: .7rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

html[data-theme="light"] .primario { color: #fff; }
@media (prefers-color-scheme: light) { html:not([data-theme]) .primario { color: #fff; } }