/* ============================================================
   RC Technology — Sistema de diseño "Hero nocturno + cuerpo claro"
   OKLCH · contraste verificado · sin build (CSS plano)
   ============================================================ */

:root {
  /* — Noche (hero / footer) — */
  --night:       oklch(0.17 0.028 220);
  --night-1:     oklch(0.21 0.032 215);
  --night-2:     oklch(0.28 0.036 210);
  --night-line:  oklch(0.34 0.03 210);
  --on-night:    oklch(0.97 0.006 220);
  --on-night-soft: oklch(0.78 0.015 215);

  /* — Teal eléctrico refinado (acento gráfico) — */
  --teal:        oklch(0.74 0.13 195);
  --teal-bright: oklch(0.84 0.13 190);

  /* — Día (cuerpo) — */
  --paper:       oklch(0.985 0.004 215);
  --surface:     oklch(0.955 0.007 215);
  --surface-2:   oklch(0.925 0.009 215);
  --ink:         oklch(0.22 0.02 222);
  --ink-soft:    oklch(0.42 0.02 222);
  --ink-mute:    oklch(0.52 0.016 222);
  --line:        oklch(0.89 0.008 215);

  /* — Marca sobre claro — */
  --petrol:      oklch(0.45 0.085 215);
  --petrol-deep: oklch(0.34 0.075 218);

  /* — Ámbar (CTA) — */
  --amber:       oklch(0.80 0.145 72);
  --amber-deep:  oklch(0.72 0.15 65);
  --on-amber:    oklch(0.24 0.04 60);

  /* — Tipografía — */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, -apple-system, sans-serif;

  /* — Medidas — */
  --maxw: 1180px;
  --gutter: clamp(1.1rem, 4vw, 2.6rem);
  --radius: 14px;
  --radius-lg: 22px;

  /* — z-index semántico — */
  --z-sticky: 100;
  --z-float: 200;
  --z-modal: 400;

  /* — easing — */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: clamp(1rem, 0.97rem + 0.2vw, 1.075rem);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
  text-wrap: balance;
  color: var(--ink);
}
p { text-wrap: pretty; max-width: 68ch; }
a { color: var(--petrol); text-decoration: none; }

img, svg { display: block; max-width: 100%; }

/* — utilidades — */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.eyebrow-brand { /* kicker de marca, uno solo y deliberado (no en cada sección) */
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-display); font-weight: 600; font-size: .82rem;
  letter-spacing: .01em; color: var(--petrol);
}
.eyebrow-brand::before { content: ""; width: 26px; height: 2px; background: var(--teal); border-radius: 2px; }

/* ============================================================
   BOTONES
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font-family: var(--font-display); font-weight: 600; font-size: 1rem;
  padding: .92rem 1.5rem; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .25s var(--ease-out), background .25s, box-shadow .25s, border-color .25s;
  white-space: nowrap;
}
.btn-amber { background: var(--amber); color: var(--on-amber); box-shadow: 0 6px 22px -8px oklch(0.72 0.15 65 / .6); }
.btn-amber:hover { background: var(--amber-deep); transform: translateY(-2px); }
.btn-ghost-night { background: transparent; color: var(--on-night); border-color: var(--night-line); }
.btn-ghost-night:hover { border-color: var(--teal); color: var(--teal-bright); transform: translateY(-2px); }
.btn-petrol { background: var(--petrol); color: var(--paper); }
.btn-petrol:hover { background: var(--petrol-deep); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--petrol); border-color: var(--line); }
.btn-outline:hover { border-color: var(--petrol); transform: translateY(-2px); }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: var(--z-sticky);
  background: oklch(0.17 0.028 220 / .82);
  backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--night-line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; color: var(--on-night); letter-spacing: -0.02em; }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand b { color: var(--teal); font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 1.7rem; list-style: none; }
.nav-links a { color: var(--on-night-soft); font-size: .96rem; font-weight: 500; position: relative; transition: color .2s; }
.nav-links a:hover { color: var(--on-night); }
.nav-links a::after { content:""; position:absolute; left:0; right:0; bottom:-6px; height:2px; background:var(--teal); transform:scaleX(0); transform-origin:left; transition:transform .28s var(--ease-out); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta { display: flex; align-items: center; gap: .8rem; }
.nav-tel { color: var(--on-night); font-family: var(--font-display); font-weight: 600; font-size: .98rem; }
.nav-toggle { display: none; background: none; border: 0; color: var(--on-night); cursor: pointer; }

/* ============================================================
   HERO NOCTURNO
   ============================================================ */
.hero {
  position: relative; background: var(--night); color: var(--on-night); overflow: hidden;
  padding-block: clamp(4rem, 11vw, 8.5rem);
  background-image:
    radial-gradient(120% 80% at 80% -10%, oklch(0.30 0.05 200 / .55), transparent 60%),
    radial-gradient(90% 70% at -10% 110%, oklch(0.26 0.045 230 / .5), transparent 55%);
}
/* grilla técnica tenue */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(oklch(0.5 0.02 210 / .07) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.5 0.02 210 / .07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(120% 100% at 50% 0%, black, transparent 75%);
}
/* línea de escaneo sutil */
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
  opacity: .5; animation: scan 7s var(--ease-out) infinite;
}
@keyframes scan { 0% { transform: translateY(0); opacity: 0; } 12% { opacity: .55; } 50% { transform: translateY(64vh); opacity: .2; } 88% { opacity: 0; } 100% { transform: translateY(0); opacity: 0; } }

.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 6.2vw, 4.6rem); color: var(--on-night); }
.hero h1 .accent { color: var(--teal); }
.hero-lead { margin-top: 1.3rem; font-size: clamp(1.08rem, 1.4vw, 1.28rem); color: var(--on-night-soft); max-width: 46ch; }
.hero-chips { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.6rem; }
.chip { font-family: var(--font-display); font-size: .9rem; font-weight: 500; color: var(--teal-bright); border: 1px solid var(--night-line); padding: .42rem .9rem; border-radius: 999px; background: oklch(0.22 0.03 210 / .5); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.2rem; }
.hero-trust { margin-top: 2.2rem; display: flex; gap: 1.8rem; flex-wrap: wrap; }
.hero-trust .stat { font-family: var(--font-display); }
.hero-trust .stat b { display: block; font-size: 1.7rem; color: var(--on-night); letter-spacing: -0.02em; }
.hero-trust .stat span { font-size: .85rem; color: var(--on-night-soft); }

/* panel visual del hero (mock de monitoreo) */
.hero-panel {
  border: 1px solid var(--night-line); border-radius: var(--radius-lg);
  background: linear-gradient(160deg, oklch(0.23 0.035 212), oklch(0.18 0.03 220));
  padding: 1.1rem; box-shadow: 0 30px 80px -40px oklch(0.05 0.02 220 / .9);
}
.hero-panel-bar { display: flex; align-items: center; gap: .5rem; margin-bottom: .9rem; }
.hero-panel-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--night-line); }
.hero-panel-bar i:first-child { background: var(--teal); }
.hero-panel-bar span { margin-left: auto; font-family: var(--font-display); font-size: .76rem; color: var(--on-night-soft); }
.cam-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; }
.cam {
  aspect-ratio: 4/3; border-radius: 10px; position: relative; overflow: hidden;
  background:
    repeating-linear-gradient(0deg, oklch(0.5 0.02 210 / .06) 0 1px, transparent 1px 14px),
    linear-gradient(135deg, oklch(0.26 0.04 205), oklch(0.19 0.03 222));
  border: 1px solid var(--night-line);
}
.cam::after { content: "● REC"; position: absolute; top: 7px; left: 8px; font-family: var(--font-display); font-size: .62rem; color: var(--teal-bright); letter-spacing: .05em; }
.cam .focus { position: absolute; width: 38px; height: 38px; border: 2px solid var(--teal); border-radius: 6px; top: 38%; left: 30%; opacity: .8; box-shadow: 0 0 0 9999px oklch(0.17 0.028 220 / .25); }
.cam:nth-child(2) .focus { top: 26%; left: 52%; }
.cam:nth-child(3) .focus { top: 50%; left: 40%; }

/* slider del hero — imágenes de producto que venden */
.hero-slider {
  position: relative; border: 1px solid var(--night-line); border-radius: var(--radius-lg);
  overflow: hidden; aspect-ratio: 4/3;
  background: linear-gradient(160deg, oklch(0.20 0.03 212), oklch(0.13 0.025 222));
  box-shadow: 0 30px 80px -40px oklch(0.05 0.02 220 / .9);
}
.hero-slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  display: flex; align-items: center; justify-content: center;
  transition: opacity .8s var(--ease-out), visibility .8s;
}
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-slide img { width: 100%; height: 100%; object-fit: contain; }
.hero-slide figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 1.6rem .9rem .8rem;
  background: linear-gradient(transparent, oklch(0.10 0.02 220 / .8));
  color: #fff; font-family: var(--font-display); font-weight: 600; font-size: .95rem; text-align: center;
}
.slider-dots { position: absolute; left: 0; right: 0; bottom: .7rem; z-index: 2; display: flex; gap: .45rem; justify-content: center; }
.slider-dots button { width: 8px; height: 8px; border-radius: 999px; border: 0; background: oklch(0.97 0.006 220 / .4); cursor: pointer; padding: 0; transition: width .3s, background .3s; }
.slider-dots button.active { width: 22px; background: var(--teal); }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; width: 38px; height: 38px; border-radius: 50%;
  background: oklch(0.12 0.02 220 / .55); border: 1px solid var(--night-line); color: #fff; cursor: pointer; display: grid; place-items: center; transition: background .25s; }
.slider-arrow:hover { background: oklch(0.20 0.03 200 / .85); }
.slider-arrow.prev { left: .6rem; } .slider-arrow.next { right: .6rem; }

/* ============================================================
   SECCIONES CLARAS
   ============================================================ */
.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
.section-head p { margin-top: .9rem; color: var(--ink-soft); font-size: 1.1rem; }

/* servicios: grilla NO uniforme, primer item destacado */
.svc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(265px, 1fr)); gap: 1.1rem; }
.svc {
  display: flex; flex-direction: column; gap: .7rem; padding: 1.6rem 1.5rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform .3s var(--ease-out), border-color .3s, box-shadow .3s;
}
.svc:hover { transform: translateY(-4px); border-color: var(--petrol); box-shadow: 0 22px 45px -30px oklch(0.45 0.085 215 / .7); }
.svc .ic { width: 46px; height: 46px; color: var(--petrol); }
.svc h3 { font-size: 1.28rem; }
.svc p { color: var(--ink-soft); font-size: .98rem; }
.svc .more { margin-top: auto; font-family: var(--font-display); font-weight: 600; font-size: .92rem; color: var(--petrol); display: inline-flex; align-items: center; gap: .35rem; }
.svc:hover .more { gap: .6rem; }
.svc.feature { grid-column: span 2; background: var(--night); color: var(--on-night); border-color: var(--night-line); }
.svc.feature h3 { color: var(--on-night); font-size: 1.6rem; }
.svc.feature p { color: var(--on-night-soft); }
.svc.feature .ic, .svc.feature .more { color: var(--teal); }
@media (max-width: 620px) { .svc.feature { grid-column: span 1; } }

/* franja "por qué nosotros" */
.why { background: var(--surface); border-block: 1px solid var(--line); }
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.6rem 2rem; }
.why-item h3 { font-size: 1.15rem; display: flex; align-items: center; gap: .55rem; }
.why-item h3 .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--teal); flex: none; }
.why-item p { color: var(--ink-soft); font-size: .98rem; margin-top: .5rem; }

/* CTA banda nocturna */
.cta-band { background: var(--night); color: var(--on-night); position: relative; overflow: hidden; }
.cta-band::before { content:""; position:absolute; inset:0; background: radial-gradient(80% 120% at 100% 0%, oklch(0.30 0.05 200 / .5), transparent 60%); }
.cta-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.cta-inner h2 { color: var(--on-night); font-size: clamp(1.7rem, 3.2vw, 2.5rem); max-width: 18ch; }
.cta-inner p { color: var(--on-night-soft); margin-top: .6rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--night); color: var(--on-night-soft); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; border-top: 1px solid var(--night-line); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
.site-footer h4 { color: var(--on-night); font-size: 1rem; margin-bottom: 1rem; }
.site-footer a { color: var(--on-night-soft); }
.site-footer a:hover { color: var(--teal-bright); }
.footer-links { list-style: none; display: grid; gap: .6rem; }
.footer-contact { display: grid; gap: .55rem; font-size: .96rem; }
.footer-bottom { margin-top: 2.5rem; padding-top: 1.4rem; border-top: 1px solid var(--night-line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: .6rem; font-size: .85rem; }

/* ============================================================
   WHATSAPP FLOTANTE
   ============================================================ */
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: var(--z-float);
  display: inline-flex; align-items: center; gap: .6rem;
  background: oklch(0.72 0.16 152); color: oklch(0.18 0.03 152);
  font-family: var(--font-display); font-weight: 700; font-size: .95rem;
  padding: .8rem 1.15rem; border-radius: 999px;
  box-shadow: 0 12px 30px -10px oklch(0.5 0.13 152 / .7);
  transition: transform .25s var(--ease-out), box-shadow .25s;
}
.wa-float:hover { transform: translateY(-3px) scale(1.03); }
.wa-float svg { width: 22px; height: 22px; }
.wa-float .lbl { display: inline; }
@media (max-width: 520px){ .wa-float .lbl { display: none; } .wa-float { padding: .85rem; } }

/* ============================================================
   MOTION (reveal) — mejora un default ya visible
   ============================================================ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
[data-stagger] > * { transition-delay: calc(var(--i, 0) * 80ms); }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
  .hero::after { display: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-panel { max-width: 440px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-links, .nav-tel { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.open + .mobile-menu { display: block; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-trust { gap: 1.2rem; }
}

/* ============================================================
   PÁGINAS DE SERVICIO — componentes
   ============================================================ */
/* hero de página interna (más compacto) */
.page-hero { padding-block: clamp(3rem, 8vw, 5.5rem); }
.page-hero h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); }
.breadcrumb { display:flex; gap:.5rem; align-items:center; font-size:.85rem; color:var(--on-night-soft); margin-bottom:1rem; }
.breadcrumb a { color: var(--on-night-soft); }
.breadcrumb a:hover { color: var(--teal-bright); }

/* lista de capacidades / features */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); gap: 1rem; }
.feat {
  display:flex; gap:.9rem; padding:1.3rem 1.4rem; background:var(--surface);
  border:1px solid var(--line); border-radius:var(--radius);
}
.feat .fic { flex:none; width:38px; height:38px; color:var(--petrol); }
.feat h3 { font-size:1.08rem; margin-bottom:.25rem; }
.feat p { font-size:.94rem; color:var(--ink-soft); }

/* lista con check */
.check-list { display:grid; gap:.7rem; margin-top:1rem; }
.check-list li { list-style:none; display:flex; gap:.65rem; align-items:flex-start; color:var(--ink-soft); }
.check-list li::before { content:""; flex:none; width:22px; height:22px; margin-top:1px; border-radius:50%; background:var(--surface-2);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%231c6b78' stroke-width='3'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:center; }

/* split: texto + tarjeta */
.split { display:grid; grid-template-columns: 1.1fr .9fr; gap: clamp(1.5rem,4vw,3.5rem); align-items:center; }
@media (max-width: 820px){ .split { grid-template-columns:1fr; } }

/* KITS de precios */
.kits { display:grid; grid-template-columns: repeat(auto-fit, minmax(250px,1fr)); gap:1.1rem; }
.kit {
  display:flex; flex-direction:column; padding:1.7rem 1.5rem; border-radius:var(--radius-lg);
  background:var(--surface); border:1px solid var(--line); position:relative;
  transition: transform .3s var(--ease-out), box-shadow .3s, border-color .3s;
}
.kit:hover { transform:translateY(-5px); box-shadow:0 26px 50px -32px oklch(0.45 0.085 215 / .7); border-color:var(--petrol); }
.kit.popular { background:var(--night); color:var(--on-night); border-color:var(--teal); }
.kit.popular h3, .kit.popular .price b { color:var(--on-night); }
.kit.popular .kit-list li { color:var(--on-night-soft); }
.kit.popular .kit-list li::before { background-color:oklch(0.26 0.04 210); }
.kit .tag { position:absolute; top:-11px; right:18px; background:var(--amber); color:var(--on-amber); font-family:var(--font-display);
  font-weight:600; font-size:.74rem; padding:.28rem .7rem; border-radius:999px; }
.kit h3 { font-size:1.3rem; }
.kit .price { margin:.6rem 0 1rem; font-family:var(--font-display); }
.kit .price span { font-size:.85rem; color:var(--ink-mute); display:block; }
.kit.popular .price span { color:var(--on-night-soft); }
.kit .price b { font-size:1.4rem; line-height:1.15; color:var(--petrol-deep); letter-spacing:-.01em; }
.kit.popular .price b { color:var(--on-night); }
.kit-list { display:grid; gap:.55rem; margin-bottom:1.4rem; }
.kit-list li { list-style:none; display:flex; gap:.55rem; font-size:.92rem; color:var(--ink-soft); }
.kit-list li::before { content:""; flex:none; width:18px; height:18px; border-radius:50%; background-color:var(--surface-2);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231c6b78' stroke-width='3'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:center; }
.kit .btn { margin-top:auto; }
.kit-note { text-align:center; color:var(--ink-mute); font-size:.9rem; margin-top:1.2rem; }

/* marca / partners strip */
.partners { display:flex; flex-wrap:wrap; gap:1.4rem 2.4rem; align-items:center; justify-content:center; }
.partners span { font-family:var(--font-display); font-weight:700; font-size:1.2rem; color:var(--ink-mute); letter-spacing:.02em; }

/* GALERÍA de proyectos */
.gallery-grid { display:grid; grid-template-columns: repeat(auto-fill, minmax(230px,1fr)); gap:.9rem; }
.gallery-item { position:relative; aspect-ratio:4/3; border-radius:var(--radius); overflow:hidden; border:1px solid var(--line); background:var(--surface-2); }
.gallery-item img { width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease-out); }
.gallery-item:hover img { transform:scale(1.06); }
.gallery-item figcaption { position:absolute; left:0; right:0; bottom:0; padding:1.4rem .9rem .7rem;
  background:linear-gradient(transparent, oklch(0.15 0.02 220 / .85)); color:#fff; font-family:var(--font-display); font-size:.9rem; font-weight:600; }
.gallery-empty { text-align:center; padding:3rem 1rem; border:1px dashed var(--line); border-radius:var(--radius-lg); background:var(--surface); }
.gallery-empty p { margin:.5rem auto 1.3rem; color:var(--ink-soft); }

/* FAQ accordion */
.faq { display:grid; gap:.7rem; max-width:840px; }
.faq details { border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); overflow:hidden; }
.faq summary { cursor:pointer; padding:1.05rem 1.3rem; font-family:var(--font-display); font-weight:600; font-size:1.05rem; color:var(--ink);
  list-style:none; display:flex; justify-content:space-between; align-items:center; gap:1rem; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; font-size:1.5rem; color:var(--petrol); transition:transform .3s; line-height:1; }
.faq details[open] summary::after { transform:rotate(45deg); }
.faq details p { padding:0 1.3rem 1.2rem; color:var(--ink-soft); }

/* menú móvil */
.mobile-menu { display: none; background: var(--night-1); border-bottom: 1px solid var(--night-line); }
.mobile-menu ul { list-style: none; padding: 1rem var(--gutter) 1.4rem; display: grid; gap: .2rem; }
.mobile-menu a { color: var(--on-night); display: block; padding: .7rem 0; border-bottom: 1px solid var(--night-line); font-family: var(--font-display); }
.mobile-menu.show { display: block; }