/* Medlogic — estilos del sitio
   Paleta tomada de la presentación original (petróleo + menta). Sin dependencias externas. */

:root {
  --petroleo: #18434A;
  --petroleo-900: #0F2E33;
  --teal: #1F8A7E;
  --menta: #7FD3C3;
  --menta-100: #E3F5F1;
  --menta-50: #F2FAF8;
  --ambar: #E8A33D;
  --ambar-100: #FCF1DF;
  --rojo: #C8483B;

  --tinta: #13272B;
  --tinta-suave: #3E5559;
  --gris: #6A7F82;
  --linea: #DCE7E6;
  --fondo: #FFFFFF;
  --fondo-alt: #F5F9F8;

  --radio: 14px;
  --radio-lg: 22px;
  --sombra-sm: 0 1px 2px rgba(19, 39, 43, .06), 0 1px 3px rgba(19, 39, 43, .08);
  --sombra: 0 10px 30px -12px rgba(19, 39, 43, .22);
  --ancho: 1160px;

  --fuente: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--fuente);
  font-size: 17px;
  line-height: 1.6;
  color: var(--tinta);
  background: var(--fondo);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--teal); }
h1, h2, h3, h4 { line-height: 1.15; margin: 0; color: var(--petroleo-900); letter-spacing: -0.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 24px; }
@media (max-width: 560px) { .contenedor { padding: 0 16px; } }

.saltar { position: absolute; left: -999px; top: 8px; background: var(--petroleo); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.saltar:focus { left: 8px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 999px; font-weight: 600; font-size: 16px;
  text-decoration: none; border: 1.5px solid transparent; cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primario { background: var(--petroleo); color: #fff; box-shadow: var(--sombra-sm); }
.btn-primario:hover { background: var(--petroleo-900); box-shadow: var(--sombra); }
.btn-menta { background: var(--menta); color: var(--petroleo-900); }
.btn-menta:hover { background: #95DCCF; }
.btn-borde { background: transparent; color: var(--petroleo); border-color: var(--linea); }
.btn-borde:hover { border-color: var(--petroleo); }
.btn-borde-claro { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.btn-borde-claro:hover { border-color: #fff; }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ---------- Cabecera ---------- */
.cabecera {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.cabecera.con-sombra { border-bottom-color: var(--linea); box-shadow: 0 4px 18px -12px rgba(19,39,43,.25); }
.cabecera .contenedor { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo img { height: 36px; width: auto; }
.menu { display: flex; align-items: center; gap: 4px; }
.menu a:not(.btn) {
  color: var(--tinta-suave); text-decoration: none; font-size: 15px; font-weight: 500;
  padding: 8px 12px; border-radius: 8px; transition: color .2s, background .2s;
}
.menu a:not(.btn):hover, .menu a.activo { color: var(--petroleo); background: var(--menta-50); }
.menu .btn { margin-left: 10px; padding: 10px 18px; font-size: 15px; }
.menu-boton { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--petroleo); }
.menu-boton svg { width: 28px; height: 28px; }

@media (max-width: 980px) {
  .menu-boton { display: block; }
  .menu {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border-bottom: 1px solid var(--linea);
    padding: 12px 16px 20px; box-shadow: var(--sombra);
    display: none;
  }
  .menu.abierto { display: flex; }
  .menu a:not(.btn) { padding: 12px; font-size: 16px; }
  .menu .btn { margin: 10px 0 0; }
}

/* ---------- Secciones ---------- */
.seccion { padding: 104px 0; }
.seccion-alt { background: var(--fondo-alt); }
.seccion-oscura { background: var(--petroleo); color: #D8ECE8; }
.seccion-oscura h2, .seccion-oscura h3 { color: #fff; }
@media (max-width: 720px) { .seccion { padding: 72px 0; } }

.encabezado { max-width: 760px; margin-bottom: 56px; }
.encabezado.centrado { margin-left: auto; margin-right: auto; text-align: center; }
.antetitulo {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 14px;
}
.antetitulo::before { content: ""; width: 22px; height: 2px; background: currentColor; border-radius: 2px; }
.encabezado.centrado .antetitulo::before { display: none; }
.seccion-oscura .antetitulo { color: var(--menta); }
.encabezado h2 { font-size: clamp(30px, 4vw, 44px); font-weight: 750; }
.encabezado p { margin-top: 18px; font-size: 19px; color: var(--tinta-suave); }
.seccion-oscura .encabezado p { color: #B9D6D1; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 88px 0 104px;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(127,211,195,.35), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(31,138,126,.12), transparent 60%),
    linear-gradient(180deg, #fff, var(--menta-50));
}
.hero .contenedor { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(38px, 5.4vw, 62px); font-weight: 800; letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--teal); }
.hero .bajada { margin-top: 22px; font-size: 20px; color: var(--tinta-suave); max-width: 560px; }
.hero .acciones { margin-top: 34px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero .sello { margin-top: 34px; display: flex; gap: 22px; flex-wrap: wrap; color: var(--gris); font-size: 14.5px; }
.hero .sello span { display: inline-flex; align-items: center; gap: 7px; }
.hero .sello svg { width: 18px; height: 18px; color: var(--teal); }
@media (max-width: 900px) {
  .hero { padding: 56px 0 72px; }
  .hero .contenedor { grid-template-columns: 1fr; gap: 44px; }
}

/* Tarjeta de ejemplo del resumen clínico */
.resumen {
  background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg);
  box-shadow: 0 30px 60px -28px rgba(19,39,43,.35); padding: 24px; position: relative;
}
.resumen::before {
  content: ""; position: absolute; inset: -14px 18px auto auto; width: 120px; height: 120px;
  background: var(--menta); opacity: .25; border-radius: 30px; transform: rotate(14deg); z-index: -1;
}
.resumen-cab { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--linea); }
.resumen-cab strong { font-size: 15px; color: var(--petroleo-900); }
.resumen-cab small { display: block; font-size: 12.5px; color: var(--gris); }
.etiqueta {
  display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px; background: var(--ambar-100); color: #8A5A12;
}
.etiqueta.ok { background: var(--menta-100); color: #156358; }
.resumen-bloque { padding: 14px 0; border-bottom: 1px dashed var(--linea); }
.resumen-bloque:last-child { border-bottom: 0; padding-bottom: 0; }
.resumen-bloque h4 { font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--gris); margin-bottom: 8px; }
.resumen-bloque p { font-size: 15px; color: var(--tinta); }
.hipotesis li { display: grid; grid-template-columns: 1fr 110px 42px; align-items: center; gap: 10px; font-size: 14.5px; padding: 4px 0; }
.barra { height: 7px; background: var(--menta-100); border-radius: 99px; overflow: hidden; }
.barra i { display: block; height: 100%; background: var(--teal); border-radius: 99px; }
.hipotesis b { font-size: 13px; color: var(--gris); text-align: right; font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 13px; padding: 5px 11px; border-radius: 999px; background: var(--fondo-alt); border: 1px solid var(--linea); color: var(--tinta-suave); }

/* ---------- Problema ---------- */
.frentes { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 900px) { .frentes { grid-template-columns: 1fr; } }
.frente { background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg); padding: 34px; }
.frente-cab { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
.frente-cab .num { font-size: 13px; font-weight: 700; color: var(--teal); letter-spacing: .1em; }
.frente h3 { font-size: 24px; }
.frente > p { color: var(--tinta-suave); margin-bottom: 26px; }
.cifras { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 480px) { .cifras { grid-template-columns: 1fr; } }
.cifra { background: var(--fondo-alt); border-radius: var(--radio); padding: 20px; }
.cifra strong { display: block; font-size: 38px; font-weight: 800; color: var(--petroleo); letter-spacing: -0.03em; line-height: 1.05; }
.cifra span { display: block; margin-top: 8px; font-size: 14.5px; color: var(--tinta-suave); line-height: 1.45; }
.cifra.texto strong { font-size: 22px; line-height: 1.2; }
.cifra strong.largo { font-size: 30px; white-space: nowrap; }
.fuente-cita { margin-top: 18px; font-size: 13px; color: var(--gris); }
.errores { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 900px) { .errores { grid-template-columns: 1fr; } }
.error { display: flex; gap: 14px; align-items: flex-start; background: #fff; border: 1px solid var(--linea); border-radius: var(--radio); padding: 18px 20px; }
.error svg { flex: none; width: 22px; height: 22px; color: var(--rojo); margin-top: 2px; }
.error strong { display: block; color: var(--petroleo-900); }
.error span { font-size: 14.5px; color: var(--tinta-suave); }

/* ---------- Solución (pasos) ---------- */
.pasos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: paso; }
@media (max-width: 980px) { .pasos { grid-template-columns: 1fr; } }
.paso {
  position: relative; background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg);
  padding: 32px 28px; transition: box-shadow .25s, transform .25s, border-color .25s;
}
.paso:hover { box-shadow: var(--sombra); transform: translateY(-3px); border-color: #C8DEDB; }
.paso-num {
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center;
  background: var(--petroleo); color: var(--menta); font-weight: 800; font-size: 19px; margin-bottom: 22px;
}
.paso h3 { font-size: 22px; margin-bottom: 10px; }
.paso > p { color: var(--tinta-suave); font-size: 16px; margin-bottom: 20px; }
.paso .chips { gap: 7px; }
.paso .chip { background: var(--menta-50); border-color: #CFE9E3; color: #1E5F57; }
.lista-check li { display: flex; gap: 12px; padding: 9px 0; border-top: 1px solid var(--linea); font-size: 15px; }
.lista-check li:first-child { border-top: 0; }
.lista-check svg { flex: none; width: 20px; height: 20px; color: var(--teal); margin-top: 2px; }
.lista-check strong { display: block; color: var(--petroleo-900); font-size: 15.5px; }
.lista-check span { color: var(--gris); font-size: 14px; }
.flujo { display: flex; flex-direction: column; gap: 8px; }
.flujo div { background: var(--fondo-alt); border-radius: 10px; padding: 10px 14px; font-size: 15px; color: var(--tinta-suave); }
.flujo div:last-child { background: var(--menta-100); color: #12514A; font-weight: 600; }
.flujo .flecha { background: none; padding: 0; text-align: center; color: var(--menta); font-size: 18px; line-height: 1; }
.nota-paso { margin-top: 16px; font-size: 13px; color: var(--gris); }

/* ---------- Arquitectura ---------- */
.arquitectura { display: grid; grid-template-columns: 1fr 1.25fr 1fr; gap: 22px; align-items: stretch; }
@media (max-width: 980px) { .arquitectura { grid-template-columns: 1fr; } }
.bloque-arq { border-radius: var(--radio-lg); padding: 28px 24px; }
.bloque-arq.lado { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); }
.bloque-arq.centro { background: #fff; color: var(--tinta); box-shadow: 0 30px 60px -30px rgba(0,0,0,.5); }
.bloque-arq h3 { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 18px; }
.bloque-arq.lado h3 { color: var(--menta); }
.bloque-arq.centro h3 { color: var(--teal); }
.item-arq { display: flex; gap: 14px; padding: 14px 0; border-top: 1px solid rgba(255,255,255,.12); }
.bloque-arq.centro .item-arq { border-top-color: var(--linea); }
.item-arq:first-of-type { border-top: 0; padding-top: 0; }
.item-arq .ico { flex: none; width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: rgba(127,211,195,.14); color: var(--menta); }
.bloque-arq.centro .item-arq .ico { background: var(--menta-100); color: var(--teal); }
.item-arq .ico svg { width: 21px; height: 21px; }
.item-arq strong { display: block; color: #fff; font-size: 16px; }
.bloque-arq.centro .item-arq strong { color: var(--petroleo-900); }
.item-arq span { font-size: 14.5px; color: #B3D2CD; line-height: 1.45; display: block; }
.bloque-arq.centro .item-arq span { color: var(--tinta-suave); }
.pie-arq { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--linea); }
.pie-arq .chip { background: var(--menta-50); }
.nota-arq {
  margin-top: 34px; display: flex; gap: 14px; align-items: center;
  background: rgba(127,211,195,.12); border: 1px solid rgba(127,211,195,.3); border-radius: var(--radio);
  padding: 18px 22px; color: #E1F1EE;
}
.nota-arq svg { flex: none; width: 24px; height: 24px; color: var(--menta); }

/* ---------- Privacidad ---------- */
.principios { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 980px) { .principios { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .principios { grid-template-columns: 1fr; } }
.principio { padding: 28px 24px; background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg); }
.principio .n { font-size: 14px; font-weight: 800; color: var(--teal); letter-spacing: .05em; }
.principio h3 { font-size: 19px; margin: 12px 0 10px; }
.principio p { font-size: 15px; color: var(--tinta-suave); }
.evidencia { margin-top: 28px; background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg); padding: 30px; }
.evidencia h3 { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--gris); margin-bottom: 20px; }
.cadena { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
@media (max-width: 780px) { .cadena { grid-template-columns: 1fr 1fr; gap: 14px; } }
.eslabon { position: relative; text-align: center; padding: 0 10px; }
.eslabon .ico { width: 54px; height: 54px; margin: 0 auto 12px; border-radius: 50%; display: grid; place-items: center; background: var(--menta-100); color: var(--teal); position: relative; z-index: 1; }
.eslabon:last-child .ico { background: var(--petroleo); color: var(--menta); }
.eslabon .ico svg { width: 24px; height: 24px; }
.eslabon::after { content: ""; position: absolute; top: 27px; left: calc(50% + 34px); right: calc(-50% + 34px); height: 2px; background: repeating-linear-gradient(90deg, var(--menta) 0 6px, transparent 6px 12px); }
.eslabon:last-child::after { display: none; }
@media (max-width: 780px) { .eslabon::after { display: none; } }
.eslabon strong { font-size: 15px; color: var(--petroleo-900); }
.normativa { margin-top: 28px; display: flex; flex-direction: column; align-items: flex-start; gap: 14px; padding: 22px 26px; background: var(--petroleo); color: #D8ECE8; border-radius: var(--radio-lg); }
.normativa p { font-size: 15.5px; }
.normativa p strong { color: #fff; }
.normativa .chips .chip { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); color: #E1F1EE; }

/* ---------- Hoja de ruta ---------- */
.fases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
@media (max-width: 980px) { .fases { grid-template-columns: 1fr; } }
.fase { background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg); padding: 30px 28px; display: flex; flex-direction: column; }
.fase-cab { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.fase-cab .etq { font-size: 13px; font-weight: 800; letter-spacing: .12em; color: var(--teal); }
.fase-cab .punto { width: 12px; height: 12px; border-radius: 50%; background: var(--menta); box-shadow: 0 0 0 5px var(--menta-100); }
.fase:first-child .fase-cab .punto { background: var(--teal); }
.fase h3 { font-size: 22px; margin-bottom: 10px; }
.fase > p { color: var(--tinta-suave); font-size: 16px; flex: 1; }
.fase dl { margin: 22px 0 0; display: grid; gap: 12px; }
.fase dl div { background: var(--fondo-alt); border-radius: 10px; padding: 12px 14px; }
.fase dt { font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--gris); }
.fase dd { margin: 4px 0 0; font-size: 15px; color: var(--tinta); }
.nota-centro { margin-top: 30px; text-align: center; color: var(--tinta-suave); }

/* ---------- Demos ---------- */
.demos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 1080px) { .demos { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .demos { grid-template-columns: 1fr; } }
.demo {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg); padding: 26px 24px;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}
.demo:hover { box-shadow: var(--sombra); transform: translateY(-3px); border-color: var(--menta); }
.demo .ico { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: var(--menta-100); color: var(--teal); margin-bottom: 18px; }
.demo .ico svg { width: 24px; height: 24px; }
.demo .quien { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--gris); }
.demo h3 { font-size: 19px; margin: 6px 0 10px; }
.demo p { font-size: 15px; color: var(--tinta-suave); flex: 1; }
.demo .ir { margin-top: 18px; font-weight: 600; color: var(--teal); display: inline-flex; align-items: center; gap: 6px; font-size: 15px; }
.demo .ir svg { width: 16px; height: 16px; transition: transform .2s; }
.demo:hover .ir svg { transform: translateX(3px); }
.aviso {
  margin-top: 26px; display: flex; gap: 12px; align-items: flex-start;
  background: var(--ambar-100); border: 1px solid #F1D29E; color: #6E4A10;
  border-radius: var(--radio); padding: 16px 20px; font-size: 15px;
}
.aviso svg { flex: none; width: 22px; height: 22px; color: var(--ambar); margin-top: 1px; }

/* ---------- Equipo ---------- */
.equipo { display: grid; grid-template-columns: 1.15fr 1fr; gap: 24px; }
@media (max-width: 900px) { .equipo { grid-template-columns: 1fr; } }
.persona, .empresa { background: #fff; border: 1px solid var(--linea); border-radius: var(--radio-lg); padding: 32px; }
.persona-cab { display: flex; gap: 20px; align-items: center; margin-bottom: 22px; }
.persona-cab img { width: 96px; height: 96px; border-radius: 50%; object-fit: cover; border: 4px solid var(--menta-100); }
.rol { font-size: 12.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--teal); }
.persona h3 { font-size: 24px; margin-top: 4px; }
.persona .lista-check li { font-size: 15.5px; color: var(--tinta-suave); }
.empresa { display: flex; flex-direction: column; gap: 22px; }
.empresa-item { display: flex; gap: 18px; align-items: flex-start; }
.empresa-item + .empresa-item { padding-top: 22px; border-top: 1px solid var(--linea); }
.empresa-item .marca { flex: none; width: 112px; height: 62px; border-radius: 12px; border: 1px solid var(--linea); display: grid; place-items: center; background: #fff; overflow: hidden; padding: 6px; }
.empresa-item .marca img { max-height: 100%; width: auto; }
.empresa-item .marca.texto { font-weight: 800; color: var(--petroleo); font-size: 19px; letter-spacing: -0.02em; }
.empresa-item .marca.texto b { color: var(--teal); font-weight: 800; }
.empresa-item h4 { font-size: 18px; }
.empresa-item p { font-size: 15px; color: var(--tinta-suave); margin-top: 4px; }
.empresa-item a { font-size: 14px; font-weight: 600; text-decoration: none; }
.cita {
  margin: 4px 0 0; padding: 20px 22px; border-radius: var(--radio); background: var(--petroleo); color: #fff;
  font-size: 18px; font-weight: 600; line-height: 1.4; letter-spacing: -0.01em;
}
.cita::before { content: "“"; display: block; font-size: 44px; line-height: .6; color: var(--menta); margin-bottom: 6px; }

/* ---------- Contacto ---------- */
.contacto {
  position: relative; overflow: hidden; border-radius: 28px; padding: 64px 48px; text-align: center;
  background: radial-gradient(600px 300px at 90% 0%, rgba(127,211,195,.35), transparent 60%), var(--petroleo);
  color: #D8ECE8;
}
.contacto h2 { color: #fff; font-size: clamp(30px, 4vw, 42px); }
.contacto p { margin: 16px auto 30px; max-width: 560px; font-size: 18px; color: #B9D6D1; }
.contacto .acciones { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 560px) { .contacto { padding: 48px 22px; } }

/* ---------- Fuentes ---------- */
.fuentes { margin-top: 56px; border-top: 1px solid var(--linea); padding-top: 26px; }
.fuentes summary { cursor: pointer; font-weight: 600; color: var(--petroleo); list-style: none; display: inline-flex; align-items: center; gap: 8px; }
.fuentes summary::-webkit-details-marker { display: none; }
.fuentes summary svg { width: 18px; height: 18px; transition: transform .2s; }
.fuentes[open] summary svg { transform: rotate(90deg); }
.fuentes ol { margin: 18px 0 0; padding-left: 22px; columns: 2; column-gap: 40px; font-size: 14px; color: var(--tinta-suave); }
.fuentes li { break-inside: avoid; margin-bottom: 8px; }
@media (max-width: 760px) { .fuentes ol { columns: 1; } }

/* ---------- Pie ---------- */
.pie { background: var(--petroleo-900); color: #93B5B0; padding: 48px 0 36px; font-size: 14.5px; }
.pie .contenedor { display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; align-items: flex-start; }
.pie img { height: 32px; width: auto; margin-bottom: 14px; }
.pie p { max-width: 420px; }
.pie nav { display: flex; gap: 22px; flex-wrap: wrap; }
.pie a { color: #CFE5E1; text-decoration: none; }
.pie a:hover { color: #fff; }
.pie .legal { width: 100%; border-top: 1px solid rgba(255,255,255,.1); padding-top: 22px; margin-top: 8px; font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- Animación de entrada ---------- */
.revelar { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.revelar.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .revelar { opacity: 1; transform: none; transition: none; }
  .btn, .paso, .demo { transition: none; }
}
.sin-js .revelar { opacity: 1; transform: none; }

/* ---------- Página de demos ---------- */
.pagina-demos .hero { padding: 64px 0 40px; }
.pagina-demos .hero .contenedor { grid-template-columns: 1fr; }
.volver { display: flex; width: fit-content; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; font-size: 15px; margin-bottom: 22px; }
.volver svg { width: 16px; height: 16px; }