/* ============================================================================
   SEI · Soluciones Energéticas Integrales — sitio público
   Skin: Oscuro (glassmorphism + máquina magma). Primario: Magma; oxblood de apoyo.
   Self-contained, relative paths only. Tokens pinned from el manual de marca.
   ========================================================================== */

:root {
  /* Ground + máquina */
  --obsidiana:      #0E0B0C;
  --card:           #131011;
  --card-2:         #120D0E;
  --oxblood:        #BE040D;  /* Magma — acción principal (color primario) */
  --oxblood-prof:   #4A141B;  /* oxblood profundo — tono de apoyo (secundario) */
  --brasa:          #D0382C;  /* magma brillante — acento / hover */
  --brasa-claro:    #E25945;  /* magma claro — enlaces */
  --brasa-hover:    #F2785F;  /* magma claro — hover de enlaces */

  /* Tinta */
  --hueso:          #ECE5DD;
  --heading:        #F3ECE4;
  --text:           #EDE5DD;
  --body:           #B2A9A9;
  --body-soft:      #9C9292;
  --ceniza:         #8A8080;
  --ceniza-prof:    #6A6161;

  /* Estructura */
  --line:           rgba(255,255,255,0.10);
  --line-soft:      rgba(255,255,255,0.08);
  --radius-s:       10px;
  --radius:         14px;
  --radius-l:       20px;

  /* Tipografía */
  --disp: 'Space Grotesk', system-ui, sans-serif;
  --ui:   'Manrope', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Movimiento */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ============================================================================
   Contraste — texto sobre Magma = hueso
   Magma (--oxblood #BE040D) y magma brillante (--brasa #D0382C) son primarios
   ROJOS oscuros (L≈0.51): sólo las tintas hueso/near-white leen sobre ellos.
   Las tintas grises (--body, --body-soft, --ceniza, --ceniza-prof) están afinadas
   para el LIENZO obsidiana oscuro — NUNCA se usan sobre una superficie magma.
   Toda superficie magma (botones, chips, píldoras, segmentos, overlays) lleva
   texto bone: --hueso / --heading / --text. Usa .on-magma como gancho compartido
   para superficies magma futuras.
   ========================================================================== */
.on-magma,
.on-magma * { color: var(--hueso); }
.on-magma :where(h1, h2, h3, strong, .is-strong) { color: var(--heading); }

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--obsidiana);
  color: var(--text);
  font-family: var(--ui);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: var(--brasa-claro); text-decoration: none; transition: color .18s var(--ease); }
a:hover { color: var(--brasa-hover); }

::selection { background: var(--oxblood); color: var(--heading); }

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(208,56,44,0.55);
  border-radius: 8px;
}

h1, h2, h3 {
  font-family: var(--disp);
  color: var(--heading);
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
}

p { margin: 0; }

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--brasa-claro);
}

/* ============================================================================
   Logo — sol brasa
   ========================================================================== */
.lockup { display: inline-flex; align-items: center; gap: 14px; }
.lockup__mark { display: block; flex-shrink: 0; }
.lockup__divider { width: 1px; align-self: stretch; background: var(--line); }
.lockup__name {
  font-family: var(--disp);
  font-weight: 700;
  letter-spacing: 0.10em;
  color: var(--heading);
  line-height: 1;
}
.lockup__tag {
  font-family: var(--disp);
  font-weight: 400;
  letter-spacing: 0.10em;
  color: var(--brasa-claro);
  line-height: 1.2;
  margin-top: 4px;
}

/* ============================================================================
   Botones
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--ui);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 26px;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform .18s var(--ease), border-color .18s var(--ease),
              background .18s var(--ease), box-shadow .18s var(--ease), color .18s var(--ease);
}
.btn--primary {
  background: var(--oxblood);
  color: var(--heading);
  box-shadow: 0 0 0 0 rgba(208,56,44,0);
}
.btn--primary:hover,
.btn--primary:active {
  background: var(--brasa);
  color: var(--heading);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(74,20,27,0.55), 0 0 0 1px rgba(226,89,69,0.55);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: rgba(255,255,255,0.20);
}
.btn--ghost:hover,
.btn--ghost:active {
  color: var(--heading);
  border-color: var(--brasa);
  transform: translateY(-2px);
  box-shadow: 0 0 22px rgba(208,56,44,0.28);
}
.btn--wa {
  background: var(--oxblood);
  color: var(--heading);
  font-size: 16px;
  padding: 16px 30px;
}
.btn--wa:hover,
.btn--wa:active {
  background: var(--brasa);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(74,20,27,0.6), 0 0 0 1px rgba(226,89,69,0.6);
}
.btn__icon { width: 18px; height: 18px; flex-shrink: 0; }

/* ============================================================================
   Cabecera / navegación (condensa + frost al hacer scroll)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(14,11,12,0.55);
  transition: background .25s var(--ease), box-shadow .25s var(--ease),
              backdrop-filter .25s var(--ease), border-color .25s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(14,11,12,0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 18px 40px;
  /* padding snaps (layout prop) — only paint props on .site-header animate */
}
.site-header.is-scrolled .nav { padding: 11px 40px; }

.nav__brand { text-decoration: none; }
.nav__brand:hover { color: inherit; }
.nav .lockup__name { font-size: 19px; }
.nav .lockup__tag {
  font-size: 8.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  /* La fila de enlaces DEBE poder envolverse. El encabezado lleva 6 elementos
     (5 enlaces + el botón de conversión) y body usa overflow-x:hidden, así que
     un desbordamiento se RECORTA en silencio en lugar de generar scroll: sin
     wrap, el elemento que se pierde es justo "Solicitar evaluación".
     Con flex-wrap la fila baja a un segundo renglón y nada se recorta. */
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
  column-gap: 30px;
  row-gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  font-size: 15px;
  font-weight: 600;
  /* Hueso, no gris: los enlaces del menú leen sobre la marca Magma (roja intensa)
     y sobre el cristal obsidiana. El gris (--body-soft) se tragaba contra el rojo;
     el hueso mantiene la fila legible. Hover / página actual suben a --heading. */
  color: var(--hueso);
  transition: color .18s var(--ease);
}
.nav__links a:hover,
.nav__links a[aria-current="page"] { color: var(--heading); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ============================================================================
   Secciones + fondo
   ========================================================================== */
.section { padding: 110px 0; position: relative; }
.section--tight { padding: 80px 0; }
.section-divider { border-top: 1px solid var(--line-soft); }

.panel-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}
.glow {
  position: absolute;
  pointer-events: none;
  background: radial-gradient(circle, rgba(208,56,44,0.30) 0%, rgba(190,4,13,0.10) 38%, rgba(14,11,12,0) 68%);
}

/* ============================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 110px;
  text-align: center;
}
.hero .glow {
  top: -14%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  max-width: 130vw;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 34px;
}
.hero__mark {
  filter: drop-shadow(0 0 40px rgba(208,56,44,0.45));
}
.hero__title {
  font-size: clamp(38px, 6.4vw, 76px);
  font-weight: 600;
  max-width: 15ch;
}
.hero__lead {
  max-width: 54ch;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.6;
  color: var(--body-soft);
}
.hero__cta { margin-top: 6px; }

/* ============================================================================
   Diferenciadores
   ========================================================================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 34px;
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.card--hover:hover,
.card--hover:active {
  transform: translateY(-2px);
  border-color: rgba(226,89,69,0.5);
  box-shadow: 0 14px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(208,56,44,0.25);
}
.card__ico {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(208,56,44,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card__title {
  font-family: var(--disp);
  font-weight: 600;
  font-size: 19px;
  color: var(--heading);
  margin-bottom: 10px;
}
.card__body { font-size: 15px; line-height: 1.6; color: var(--body); }

.section__head { max-width: 62ch; margin-bottom: 52px; }
.section__head .eyebrow { display: block; margin-bottom: 22px; }
.section__title {
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 600;
  margin-bottom: 20px;
}
.section__intro { font-size: 18px; line-height: 1.7; color: var(--body); }

/* ============================================================================
   Marcos de imagen (placeholders honestos)
   ========================================================================== */
.frame {
  position: relative;
  border-radius: var(--radius);
  border: 1px dashed rgba(226,89,69,0.42);
  background:
    repeating-linear-gradient(135deg, #171112 0 10px, #1c1516 10px 20px);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 220px;
  padding: 24px;
}
.frame__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.frame__label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--body-soft);
}
.frame__pending {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--brasa-claro);
  border: 1px solid rgba(226,89,69,0.4);
  border-radius: 20px;
  padding: 5px 12px;
}

/* Proyectos strip / galería */
.strip-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.strip-3 .frame { min-height: 180px; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery .frame { min-height: 210px; }
.gallery__item { transition: opacity .3s var(--ease); }
.gallery__item[hidden] { display: none; }

/* Fotos reales de proyectos (reemplazan los placeholders .frame al entregarse) */
.gallery__item.photo {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
  transition: opacity .3s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.gallery__item.photo img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;      /* caja estable → sin salto de layout al cargar */
  object-fit: cover;
  transition: transform .45s var(--ease);
}
.gallery__item.photo:hover,
.gallery__item.photo:active {
  border-color: rgba(226,89,69,0.5);
  box-shadow: 0 14px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(208,56,44,0.25);
}
.gallery__item.photo:hover img,
.gallery__item.photo:active img { transform: scale(1.045); }
.photo__cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--hueso);
  padding: 26px 14px 12px;
  background: linear-gradient(to top, rgba(14,11,12,0.86) 0%, rgba(14,11,12,0) 100%);
  pointer-events: none;
}

.chips { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.chip {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--body-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 8px 16px;
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.chip:hover { color: var(--heading); border-color: var(--brasa); }
.chip[aria-pressed="true"] {
  color: var(--brasa-claro);
  border-color: var(--brasa);
  background: rgba(208,56,44,0.12);
}

/* ============================================================================
   Servicios (bloques ampliables)
   ========================================================================== */
.service {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 34px;
}
.service + .service { margin-top: 26px; }
.service__media .frame { min-height: 280px; height: 100%; }
.service__title {
  font-family: var(--disp);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 32px);
  color: var(--heading);
  margin-bottom: 16px;
}
.service__body { font-size: 16px; line-height: 1.7; color: var(--body); margin-bottom: 24px; }
.service__kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brasa-claro);
  margin-bottom: 14px;
  display: block;
}

/* ============================================================================
   Banda CTA
   ========================================================================== */
.cta-band {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--card-2);
  padding: 64px 40px;
  text-align: center;
}
.cta-band .glow {
  top: -60%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  max-width: 120vw;
}
.cta-band__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.cta-band__title {
  font-family: var(--disp);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 40px);
  color: var(--heading);
  max-width: 20ch;
}

/* ============================================================================
   Contacto
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.wa-card {
  position: relative;
  overflow: hidden;
  background: var(--card);
  border: 1px solid rgba(226,89,69,0.4);
  border-radius: var(--radius-l);
  padding: 40px;
}
.wa-card .glow {
  top: -40%; right: -20%;
  width: 420px; height: 420px;
}
.wa-card__inner { position: relative; z-index: 1; }
.wa-card__num {
  font-family: var(--mono);
  font-size: 20px;
  color: var(--heading);
  letter-spacing: 0.04em;
  margin: 16px 0 24px;
}

.form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 40px;
}
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-size: 13px;
  color: var(--body-soft);
  margin-bottom: 8px;
}
.field input,
.field textarea {
  width: 100%;
  font-family: var(--ui);
  font-size: 15px;
  color: var(--text);
  background: var(--obsidiana);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 13px 15px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--ceniza-prof); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brasa);
  box-shadow: 0 0 0 3px rgba(208,56,44,0.18);
}
.field textarea { resize: vertical; min-height: 120px; }
.field__row { display: flex; gap: 12px; align-items: flex-end; }
.field__row .field { flex: 1; margin-bottom: 0; }
.geo-btn {
  flex-shrink: 0;
  white-space: nowrap;
  padding: 13px 18px;
  font-size: 13px;
}
.form-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ceniza);
  margin-top: 18px;
}
.form-status {
  font-size: 14px;
  color: var(--brasa-claro);
  margin-top: 14px;
  min-height: 1.2em;
}

/* ============================================================================
   Pie
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--card-2);
  padding: 72px 0 56px;
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  text-align: center;
}
.site-footer__tag {
  font-family: var(--disp);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--heading);
}
.site-footer__links {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  justify-content: center;
}
.site-footer__links a { color: var(--body-soft); font-weight: 600; font-size: 15px; }
.site-footer__links a:hover { color: var(--heading); }
.site-footer__meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ceniza-prof);
}
.site-footer__fine {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ceniza);
  max-width: 60ch;
}

/* ============================================================================
   Servicio ancla (solar) — puntos + realce de tenant principal
   Aditivo sobre .service; usa los mismos tokens de máquina oxblood.
   ========================================================================== */
.service--anchor {
  position: relative;
  overflow: hidden;
  border-color: rgba(226,89,69,0.45);
  box-shadow: 0 0 0 1px rgba(208,56,44,0.18);
}
.service--anchor .glow {
  top: -50%; right: -18%;
  width: 460px; height: 460px;
}
.service--anchor .service__media,
.service--anchor .service__text { position: relative; z-index: 1; }
.service__flag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brasa-claro);
  border: 1px solid rgba(226,89,69,0.4);
  border-radius: 20px;
  padding: 6px 13px;
  margin-bottom: 18px;
}
.service__points {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 13px;
}
.service__points li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--body);
}
.service__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--oxblood);
  box-shadow: 0 0 0 3px rgba(208,56,44,0.18);
}
.service__points strong { color: var(--heading); font-weight: 600; }

/* ============================================================================
   Grilla secundaria de servicios (los otros 7) — tarjetas compactas
   Reutiliza .card / .card__ico / .card__title / .card__body; sólo añade el
   gancho mono y la grilla auto-fit (colapsa a 1 col en móvil sin scroll).
   ========================================================================== */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.card__hook {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brasa-claro);
  display: block;
  margin-bottom: 12px;
}
.card__ico svg { color: var(--brasa-claro); }

/* ============================================================================
   Tira teaser (Inicio) — 8 iconos "soluciones energéticas integrales"
   ========================================================================== */
.teaser-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.teaser-strip li {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 13px;
  padding: 24px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.teaser-strip li:hover {
  transform: translateY(-2px);
  border-color: rgba(226,89,69,0.45);
  box-shadow: 0 12px 34px rgba(0,0,0,0.38), 0 0 0 1px rgba(208,56,44,0.22);
}
.teaser-strip__ico {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(208,56,44,0.15);
  color: var(--brasa-claro);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.teaser-strip__ico svg { width: 24px; height: 24px; }
.teaser-strip__label {
  font-family: var(--ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

/* ============================================================================
   Movimiento — reveals (encienden una vez; luego inertes)
   ========================================================================== */
/* Sin JS el contenido debe verse. Por eso .reveal es VISIBLE por defecto y
   sólo lo ocultamos-para-animar cuando JS está confirmado presente (un script
   en <head> cambia html.no-js → html.js antes del primer render). Así, con JS
   deshabilitado, bloqueado, o si site.js lanza un error antes de correr, el
   visitante ve todo el contenido en vez de una página en blanco. */
.reveal {
  opacity: 1;
  transform: none;
}
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .45s var(--ease), transform .45s var(--ease);
  will-change: opacity, transform;
  /* Red de seguridad: si site.js NUNCA llega a ejecutarse (falla al cargar,
     error de sintaxis, red caída) el <head> ya puso html.js y ocultó los
     .reveal, así que sin este respaldo quedarían invisibles para siempre.
     La animación los revela tras una breve espera. Sólo opacity/transform. */
  animation: revealFailsafe .45s var(--ease) 1.6s forwards;
}
/* En cuanto site.js confirma que SÍ se está ejecutando (añade html.js-ok como
   su primera instrucción) cancelamos el temporizador de respaldo en TODOS los
   .reveal. A partir de ahí el IntersectionObserver es el único que revela, una
   vez, al entrar en viewport — así el respaldo por tiempo no dispara fuera de
   pantalla y no rompe el scroll-reveal de las secciones bajo el pliegue. */
.js-ok .reveal {
  animation: none;
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
  animation: none; /* observador reveló este elemento; queda visible */
}
@keyframes revealFailsafe {
  to { opacity: 1; transform: none; }
}

/* ----------------------------------------------------------------------------
   Hero: reveal fotovoltaico de primer pintado (coreografía bloqueada, ≤1.4s).
   Sólo se ejecuta cuando el script del <head> añade html.sei-reveal (una vez por
   visita, o con ?reveal=1, y nunca bajo reduced-motion). SIN esa clase todo el
   hero está en reposo y visible desde el primer frame (a prueba de FOUC).
   Se animan únicamente opacity / transform / stroke-dashoffset — sin props de
   layout, sin filter (no se toca el drop-shadow de .hero__mark), sin librerías.

   Firma solar en tres movimientos:
     · Exposición  — el núcleo (.hero__mark) asienta ~280ms; el anillo dasheado
                     (.ray) se traza 213.6→0 en ~610ms.
     · Saturación  — el resplandor oxblood (.hero .glow) carga: onset 450ms,
                     pico 900ms; conserva translateX(-50%).
     · Conversión  — el contenido irradia DESDE el sol, ~70ms por anillo:
                     titular 900ms · bajada 970ms · CTA 1040ms; cada uno asienta
                     ~300ms (último anillo termina ~1340ms).
   ---------------------------------------------------------------------------- */

/* En reposo el anillo se muestra completo (dashoffset 0). El barrido sólo existe
   bajo la clase armada. El dasharray ES el look sol-brasa en reposo. */
.ray { stroke-dasharray: 5 12.85; }

/* Exposición — núcleo (THE SUN): asienta temprano (~280ms), no forma parte de
   la cascada posterior. */
html.sei-reveal .hero__mark {
  opacity: 0;
  transform: scale(0.55);
  transform-origin: center;
  will-change: opacity, transform;
  animation: seiCoreSettle 280ms var(--ease) both;
}

/* Exposición — el anillo dasheado se enciende/traza (~610ms). */
html.sei-reveal .ray {
  stroke-dashoffset: 213.6;
  will-change: stroke-dashoffset;
  animation: seiRayIgnite 610ms var(--ease) both;
}

/* Saturación — el resplandor carga: onset 450ms → pico 900ms. Mantiene su
   translateX(-50%) de reposo dentro del keyframe. */
html.sei-reveal .hero .glow {
  opacity: 0;
  transform: translateX(-50%) scale(0.92);
  will-change: opacity, transform;
  animation: seiGlowCharge 450ms var(--ease) 450ms both;
}

/* Conversión — el contenido irradia desde el sol, escalonado ~70ms por anillo. */
html.sei-reveal .hero__title,
html.sei-reveal .hero__lead,
html.sei-reveal .hero__cta {
  opacity: 0;
  transform: translateY(16px);
  will-change: opacity, transform;
  animation: seiConvert 300ms var(--ease) both;
}
html.sei-reveal .hero__title { animation-delay: 900ms; }
html.sei-reveal .hero__lead  { animation-delay: 970ms; }
html.sei-reveal .hero__cta   { animation-delay: 1040ms; }

@keyframes seiCoreSettle {
  from { opacity: 0; transform: scale(0.55); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes seiRayIgnite {
  from { stroke-dashoffset: 213.6; }
  to   { stroke-dashoffset: 0; }
}
@keyframes seiGlowCharge {
  from { opacity: 0; transform: translateX(-50%) scale(0.92); }
  to   { opacity: 1; transform: translateX(-50%) scale(1); }
}
@keyframes seiConvert {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

/* ▽▽▽ ============================================================================
   CAPA LÍQUIDA (rung 2 · KEEP/DROP) — asentamiento molten→crisp de la cascada.
   Aplica el filtro gooey oxblood (#sei-goo, inline en index.html) SÓLO a los tres
   elementos de la Conversión mientras html.liquid-reveal está armado. site.js retira
   html.liquid-reveal al terminar la cascada → el filtro DESAPARECE (no se pone a cero)
   y el texto resuelve nítido y a todo color. El sol (.hero__mark) NO se filtra.
   Sin over-scale: colisionaría con el transform de rung 1 (que no se toca); el goo +
   tinte cargan la lectura líquida. Capa puramente aditiva y reversible.
   Para SOLTAR: borrar este bloque completo (hasta el cierre △△△).
   ============================================================================ */
html.liquid-reveal .hero__title,
html.liquid-reveal .hero__lead,
html.liquid-reveal .hero__cta {
  filter: url(#sei-goo);
  /* Unión aditiva con la pista de rung 1 (opacity, transform): no la degradamos y
     además promovemos la capa filtrada durante su breve ventana de vida. */
  will-change: opacity, transform, filter;
}
/* △△△ fin capa líquida △△△ ============================================================ */

/* ============================================================================
   Reduced motion — todo visible y quieto
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .js .reveal { opacity: 1 !important; transform: none !important; transition: none !important; animation: none !important; }
  /* Cinturón-y-tirantes: el <head> ya se niega a armar bajo reduced-motion, pero
     aun si html.sei-reveal estuviera presente, aquí forzamos el hero estático. */
  html.sei-reveal .hero__mark, html.sei-reveal .hero__title, html.sei-reveal .hero__lead,
  html.sei-reveal .hero__cta, html.sei-reveal .hero .glow {
    opacity: 1 !important; transform: none !important; animation: none !important;
  }
  html.sei-reveal .hero .glow { transform: translateX(-50%) !important; }
  .ray { stroke-dashoffset: 0 !important; animation: none !important; }
  .btn, .card, .chip, a, .gallery__item.photo, .gallery__item.photo img { transition: none !important; }
  .gallery__item.photo:hover img, .gallery__item.photo:active img { transform: none !important; }
}

/* ============================================================================
   Responsive — limpio a 360 / 390 / 414
   ========================================================================== */
@media (max-width: 860px) {
  .service { grid-template-columns: 1fr; gap: 26px; }
  .service__media { order: -1; }
}

/* Banda de escritorio estrecho (721px a 1100px): el menú móvil todavía NO se
   activa (eso ocurre a 720px), así que los 6 elementos del encabezado siguen en
   una sola fila. Se recupera ancho reduciendo separaciones, tipografía y
   relleno lateral. El flex-wrap de .nav__links es la red de seguridad si aun
   así no cabe. */
@media (min-width: 721px) and (max-width: 1100px) {
  .nav { padding: 16px 24px; gap: 14px; }
  .site-header.is-scrolled .nav { padding: 11px 24px; }
  .nav .lockup__tag { display: none; }
  .nav__links { column-gap: 16px; }
  .nav__links a { font-size: 14px; }
  .nav__links .btn { padding: 11px 16px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .container { padding: 0 20px; }
  .section { padding: 68px 0; }
  .section--tight { padding: 54px 0; }
  .hero { padding: 80px 0 72px; }

  .nav { padding: 14px 20px; }
  .site-header.is-scrolled .nav { padding: 10px 20px; }
  .nav__toggle { display: flex; }
  .nav .lockup__tag { display: none; }

  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    /* el cajón móvil apila en columna: se neutralizan el wrap y la alineación
       a la derecha que la fila de escritorio necesita */
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0;
    background: rgba(14,11,12,0.96);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 8px 20px 18px;
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity .2s var(--ease), transform .2s var(--ease);
  }
  .nav__links.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav__links li { width: 100%; }
  .nav__links a { display: block; width: 100%; padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
  .nav__links .btn { margin-top: 14px; width: 100%; }

  .grid-3, .grid-2, .strip-3, .gallery { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .strip-3 { grid-template-columns: 1fr; }
  .teaser-strip { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .contact-grid { grid-template-columns: 1fr; }
  .card, .service, .wa-card, .form-card { padding: 24px; }
  .cta-band { padding: 44px 22px; }
  .field__row { flex-direction: column; align-items: stretch; }
  .geo-btn { width: 100%; }
}

@media (max-width: 460px) {
  .gallery { grid-template-columns: 1fr; }
  .hero__title { font-size: clamp(30px, 9vw, 44px); }
}

/* ============================================================================
   Preguntas frecuentes (/preguntas)
   Reutiliza .card / .card__title / .card__body. Sólo apila y ajusta la lectura.
   ========================================================================== */
.faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 44px;
}
.faq__item { max-width: 76ch; }
.faq__q { font-size: 20px; }
.faq__a { font-size: 16px; }

@media (max-width: 720px) {
  .faq-list { gap: 14px; margin-top: 32px; }
  .faq__q { font-size: 18px; }
}