/* =====================================================================
   TECNO PROYECTOS · DESIGN SYSTEM v3.3
   Diseño real con marca aplicada — basado en wireframes v3.2 (Heritage)
   + identidad oficial extraída de la presentación corporativa.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
  /* --- Brand colors (extraídos del logo y la presentación) --- */
  --brand-orange: #F37322;
  --brand-orange-dark: #E25911;
  --brand-orange-light: #F89834;
  --brand-orange-peach: #FDE4D0;

  --brand-ink: #1F1F1F;
  --brand-black: #000000;
  --brand-graphite: #2C2C2C;

  --brand-steel: #2E6B97;
  --brand-steel-light: #4E82A7;

  /* --- Neutros · TEMA OSCURO v4.1 (sin blanco como fondo) --- */
  --bg: #111111;            /* página · más oscuro */
  --surface: #1A1A1A;       /* secciones alternas */
  --surface-2: #242424;     /* cards, pills (elevadas) */
  --line: rgba(255,255,255,0.10);
  --line-strong: rgba(255,255,255,0.22);

  --ink: #F4F4F4;           /* texto primario (claro) */
  --ink-soft: #B2B2B2;      /* texto secundario */
  --ink-mute: #8A8A8A;      /* texto tenue */

  --accent: var(--brand-orange);
  --accent-soft: rgba(243,115,34,0.16);   /* tinte naranja translúcido */

  /* --- Sizing --- */
  --radius: 4px;
  --radius-lg: 10px;
  --container: 1200px;
  --gutter: clamp(1rem, 3vw, 2rem);
  --section-pad: clamp(3rem, 6vw, 5rem);
  --header-h: 80px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Montserrat', 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* =================================================================
   HEADER · with real logo
   ================================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  height: var(--header-h);
  display: flex;
  align-items: center;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
}
.brand-logo {
  height: 52px;
  width: auto;
  display: block;
}

.nav-main {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-main a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  transition: color 200ms;
  cursor: pointer;
  padding: 0.5rem 0;
}
.nav-main a:hover { color: var(--accent); }
.nav-main a[aria-current="page"] { color: var(--accent); font-weight: 600; }
.nav-main a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -29px;
  height: 3px;
  background: var(--accent);
}

.header-ctas {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
@media (max-width: 1024px) {
  .nav-main { display: none; }
}

/* =================================================================
   CONTAINER
   ================================================================= */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* =================================================================
   BUTTONS
   ================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  border: 2px solid transparent;
  transition: background 200ms, border-color 200ms, color 200ms, transform 200ms;
  cursor: pointer;
  letter-spacing: 0.01em;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--brand-orange-dark); border-color: var(--brand-orange-dark); }

.btn-secondary {
  background: var(--brand-ink);
  color: #fff;
  border-color: var(--ink);
}
.btn-secondary:hover { background: var(--brand-graphite); border-color: var(--brand-graphite); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }

.btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }

/* =================================================================
   TYPOGRAPHY
   ================================================================= */
.eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}
.eyebrow.dark { color: var(--ink); }

h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
  letter-spacing: -0.02em;
  color: var(--ink);
}
h1 { font-weight: 800; }
h2, h3 { font-weight: 700; }

.section-title {
  font-size: clamp(1.875rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 1rem;
  color: var(--ink);
}
.section-title em {
  font-style: normal;
  color: var(--accent);
}
.section-lead {
  font-size: 1.0625rem;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0 0 2rem;
}

/* =================================================================
   HERO · full-bleed industrial con foto real
   ================================================================= */
.hero {
  position: relative;
  min-height: clamp(420px, 55vh, 540px);
  background: var(--brand-ink);
  color: #fff;
  overflow: hidden;
  border-bottom: 4px solid var(--accent);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,0.88) 0%, rgba(0,0,0,0.65) 45%, rgba(0,0,0,0.25) 100%),
    linear-gradient(180deg, rgba(0,0,0,0.4) 0%, transparent 30%, transparent 70%, rgba(0,0,0,0.5) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: clamp(2.5rem, 5vw, 4rem) 0 clamp(1.5rem, 3vw, 2.5rem);
  min-height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero .eyebrow { color: var(--accent); }
.hero h1 {
  font-size: clamp(2.25rem, 5.5vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.02;
  color: #fff;
  margin: 0 0 1.5rem;
  max-width: 22ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero .lead {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.85);
  max-width: 52ch;
  margin: 0 0 2.25rem;
  line-height: 1.55;
}
.hero .actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.hero .btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.hero .btn-outline:hover { background: #fff; color: var(--ink); border-color: #fff; }

/* Hero floating stats strip */
.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255,255,255,0.15);
}
@media (min-width: 700px) { .hero-stats { grid-template-columns: repeat(4, 1fr); } }
.hero-stats .item {
  padding: 1.25rem var(--gutter);
  border-right: 1px solid rgba(255,255,255,0.1);
}
.hero-stats .item:last-child { border-right: 0; }
.hero-stats .num {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1;
  color: #fff;
}
.hero-stats .lbl {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  margin-top: 0.5rem;
}

/* =================================================================
   SECTION base
   ================================================================= */
section { padding: var(--section-pad) 0; }
.section-alt { background: var(--surface); }
.section-dark {
  background: var(--brand-ink);
  color: #fff;
}
.section-dark .section-title { color: #fff; }
.section-dark .section-lead { color: rgba(255,255,255,0.78); }
.section-dark .eyebrow { color: var(--brand-orange-light); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}
.section-label::before {
  content: "";
  width: 36px;
  height: 2.5px;
  background: var(--accent);
  display: inline-block;
}

/* =================================================================
   VALUE PROP / 2-COLUMN
   ================================================================= */
.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: stretch;
}
@media (min-width: 900px) {
  .two-col { grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
  .two-col.reverse > :first-child { order: 2; }
}
.two-col-photo {
  width: 100%;
  height: 420px;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
@media (max-width: 899px) {
  .two-col-photo { height: 280px; }
}
.two-col-photo::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 70%, rgba(243, 115, 34, 0.15));
  pointer-events: none;
}

/* =================================================================
   3-PILLAR EPC services
   ================================================================= */
.pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 800px)  { .pillars { grid-template-columns: repeat(3, 1fr); } }

.pillar {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 200ms, transform 200ms, box-shadow 200ms;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.pillar::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent);
  transition: width 250ms ease;
}
.pillar:hover {
  border-color: var(--ink);
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(0,0,0,0.08);
}
.pillar:hover::before { width: 100%; }

.pillar-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin: 0.5rem 0 1.5rem;
}
.pillar-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: rgba(243,115,34,0.18);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
}
.pillar-icon svg { width: 28px; height: 28px; }
.pillar h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.015em;
}
.pillar p {
  margin: 0 0 1.25rem;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  flex-grow: 1;
}
.pillar ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
.pillar li {
  font-size: 0.875rem;
  color: var(--ink);
  padding: 0.375rem 0;
  display: flex;
  gap: 0.5rem;
  align-items: start;
}
.pillar li::before {
  content: "+";
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* =================================================================
   ALCANCE · Upstream/Midstream como alternating photo rows
   (Mismo patrón que wireframe v3.2 "he-industry-row")
   ================================================================= */
.alcance-section {
  padding: 0;
  background: var(--brand-ink);
}
.alcance-header {
  padding: clamp(3rem, 5vw, 4rem) 0 clamp(2rem, 3vw, 2.5rem);
  color: #fff;
}
.alcance-header .section-label { color: var(--brand-orange-light); }
.alcance-header .section-title { color: #fff; }
.alcance-header .section-lead { color: rgba(255,255,255,0.78); }

.alcance-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-bottom: 1px solid var(--line);
  min-height: 360px;
}
@media (min-width: 900px) {
  .alcance-row { grid-template-columns: 1fr 1fr; }
  .alcance-row:nth-child(even) .alcance-photo { order: 2; }
}
.alcance-photo {
  background-size: cover;
  background-position: center;
  min-height: 360px;
  position: relative;
}
.alcance-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(31,31,31,0.15) 0%, transparent 50%);
}
.alcance-info {
  padding: clamp(2rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}
.alcance-info .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
  background: var(--brand-steel);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 0.875rem;
  border-radius: 999px;
}
.alcance-info h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}
.alcance-info p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.6;
}
.alcance-info ul {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.alcance-info ul li {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 0.375rem 0.75rem;
  border-radius: 3px;
  color: var(--ink-soft);
}
/* Link "Ver soluciones →" en naranja (antes caía al azul default del navegador) */
.alcance-info .arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.25rem;
  align-self: flex-start;
  transition: color 200ms, border-color 200ms;
  cursor: pointer;
}
.alcance-info .arrow:hover {
  color: var(--brand-orange-light);
  border-color: var(--brand-orange-light);
}

/* =================================================================
   CAPACIDADES TÉCNICAS · sección gris oscuro, cards más oscuras
   ================================================================= */
.capacidades-section {
  background: var(--surface);   /* #1A1A1A · cards #252525 contrastan */
  color: var(--ink);
  padding: clamp(3rem, 6vw, 5rem) 0;
}
.capacidades-section .section-label { color: var(--accent); }
.capacidades-section .section-title { color: var(--ink); }
.capacidades-section .section-lead { color: var(--ink-soft); }

.capacidades-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}
@media (min-width: 700px) { .capacidades-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .capacidades-grid { grid-template-columns: repeat(3, 1fr); } }

.capacidad {
  background: #252525;
  padding: 1.75rem 1.5rem;
  text-decoration: none;
  color: rgba(255,255,255,0.85);
  transition: background 200ms, transform 200ms;
  display: block;
  cursor: pointer;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.05);
}
.capacidad:hover {
  background: #2C2C2C;
  color: #fff;
  transform: translateY(-2px);
}
.capacidad-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--brand-orange-light);
  margin-bottom: 0.75rem;
}
.capacidad h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: #fff;
  line-height: 1.25;
}
.capacidad p {
  margin: 0;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
}

/* =================================================================
   PROPUESTA DE VALOR · 3-col card grid (estilo wireframe)
   ================================================================= */
.propuesta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 800px) { .propuesta { grid-template-columns: repeat(3, 1fr); } }

.propuesta-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 200ms, transform 200ms;
  border-top: 4px solid var(--accent);
}
.propuesta-card:hover { transform: translateY(-3px); border-color: var(--ink); }
.propuesta-card .num {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.propuesta-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.3;
}
.propuesta-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* =================================================================
   DIFERENCIADORES — banded layout
   ================================================================= */
.diff-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.diff-item {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem 1.75rem;        /* padding L/R para que el texto no llegue al borde */
  border-bottom: 1px solid var(--line);
  border-radius: var(--radius);
}
.diff-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.025em;
}
.diff-text {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}
.diff-icon {
  width: 32px;
  height: 32px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: 700;
}

/* =================================================================
   CASO / experience card
   ================================================================= */
.caso {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
@media (min-width: 900px) {
  .caso { grid-template-columns: 1fr 1fr; }
}
.caso-photo {
  background-size: cover;
  background-position: center;
  min-height: 320px;
}
.caso-body {
  padding: clamp(2rem, 4vw, 2.75rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.caso-body .tag {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
.caso-body h3 {
  font-size: clamp(1.375rem, 2.5vw, 1.875rem);
  font-weight: 700;
  margin: 0 0 1rem;
  line-height: 1.15;
}
.caso-body p {
  margin: 0 0 1.25rem;
  color: var(--ink-soft);
}
.caso-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
}
.caso-meta dt {
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.6875rem;
  color: var(--ink-mute);
  margin: 0;
}
.caso-meta dd {
  margin: 0.25rem 0 0;
  color: var(--ink);
}

/* =================================================================
   ALIADOS (real brands)
   ================================================================= */
.aliados {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
@media (min-width: 700px) { .aliados { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .aliados { grid-template-columns: repeat(5, 1fr); } }

.aliado {
  height: 150px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  display: grid;
  place-items: center;
  padding: 1.25rem 1.5rem;
  transition: border-color 200ms, transform 200ms, box-shadow 200ms;
}
.aliado:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.05);
}
.aliado img {
  width: 100%;
  height: 100%;
  margin-top: -8%;
  object-fit: contain;
  object-position: center center;
  display: block;
  /* Logos a blanco monocromático sobre cards oscuras (tratamiento premium dark) */
  filter: brightness(0) invert(1);
  opacity: 0.72;
  transition: opacity 200ms;
}
.aliado:hover img { opacity: 1; }

/* =================================================================
   CTA block · imagen background + overlay gris oscuro
   ================================================================= */
.cta {
  background: var(--brand-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4rem);
  display: grid;
  gap: 2rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  z-index: 0;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(31,31,31,0.93) 0%, rgba(31,31,31,0.80) 100%);
  z-index: 0;
}
/* Solo los hijos que NO son bg/overlay reciben z-index:1 (bug fix v1.2) */
.cta > *:not(.cta-bg):not(.cta-overlay) {
  position: relative;
  z-index: 1;
}

/* Botón del CTA · grande y ancho, ocupa su columna completa (v4.3) */
.cta .actions {
  display: flex;
  width: 100%;
}
.cta .actions .btn {
  width: 100%;
  justify-content: center;
  padding: 1.25rem 2rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: var(--radius-lg);
}
@media (max-width: 799px) {
  .cta .actions .btn { padding: 1.125rem 1.5rem; }
}

/* Wrap del CTA: padding normal arriba y abajo */
.cta-section-wrap {
  padding: var(--section-pad) 0;
}
@media (min-width: 800px) {
  .cta { grid-template-columns: 2fr 1fr; gap: 3rem; }
}
.cta h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: #fff;
}
.cta p {
  margin: 0;
  color: rgba(255,255,255,0.85);
  font-size: 1.0625rem;
}

/* =================================================================
   FOOTER
   ================================================================= */
.site-footer {
  background: var(--brand-ink);
  color: #fff;
  padding: clamp(3rem, 6vw, 4.5rem) 0 1.5rem;
}
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  margin-bottom: 2.5rem;
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; }
}
.footer-col h5 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin: 0 0 1.25rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.footer-col a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 200ms;
  cursor: pointer;
}
.footer-col a:hover { color: var(--accent); }
.footer-brand img {
  height: 64px;
  width: auto;
  display: block;
  margin-bottom: 1rem;
  max-width: 220px;
  object-fit: contain;
}
.footer-brand p {
  color: rgba(255,255,255,0.65);
  font-size: 0.9375rem;
  margin: 0;
  max-width: 36ch;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
}

/* =================================================================
   Decorative wave (header right side)
   ================================================================= */
.brand-curve {
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 100%;
  pointer-events: none;
  opacity: 0.06;
  background-image: repeating-linear-gradient(135deg, var(--accent) 0 1px, transparent 1px 8px);
}

/* =================================================================
   HEADER · dual CTA (Emergencia + Cotizar) + dropdown Industrias
   ================================================================= */
.btn-emergency {
  background: #D9342B;
  color: #fff;
  border-color: #D9342B;
}
.btn-emergency:hover { background: #B7271F; border-color: #B7271F; }
.btn-emergency::before {
  content: "";
  width: 8px;
  height: 8px;
  background: #fff;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.375rem;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.has-dropdown { position: relative; }
.has-dropdown > a::after {
  content: " ▾";
  font-size: 0.625rem;
  color: var(--ink-mute);
}
.dropdown {
  position: absolute;
  top: calc(100% + 16px);
  left: -1rem;
  min-width: 260px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 180ms, transform 180ms, visibility 180ms;
  z-index: 60;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 180ms, color 180ms;
}
.dropdown a:hover { background: var(--surface); color: var(--ink); }
.dropdown .dd-tag {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  padding: 0 0.875rem;
  margin: 0.25rem 0 0.5rem;
}
.dropdown .dd-divider {
  height: 1px;
  background: var(--line);
  margin: 0.5rem 0;
}
.dropdown .dd-all { font-weight: 700; color: var(--ink); }

/* =================================================================
   BREADCRUMB
   ================================================================= */
.breadcrumb {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 0.875rem 0;
}
.breadcrumb nav {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.breadcrumb a {
  color: var(--ink-mute);
  text-decoration: none;
  transition: color 180ms;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 0.5rem; }
.breadcrumb .current { color: var(--ink); }

/* =================================================================
   VALUES · 5 principios numerados (Quiénes Somos)
   ================================================================= */
.valores {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}
@media (min-width: 700px) { .valores { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .valores { grid-template-columns: repeat(3, 1fr); } }
/* Variante para secciones con exactamente 4 cards (pains): 4 en una fila, 2+2 en tablet */
@media (min-width: 1100px) { .valores.cols-4 { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 700px) and (max-width: 1099px) { .valores.cols-4 { grid-template-columns: repeat(2, 1fr); } }
.valor {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 200ms, transform 200ms;
  border-left: 4px solid var(--accent);
}
.valor:hover { border-color: var(--ink); transform: translateY(-3px); }
.valor .v-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 0.5rem;
}
.valor h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.valor p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* =================================================================
   TIMELINE · trayectoria
   ================================================================= */
.timeline {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 10px;
  width: 2px;
  background: var(--line);
}
.timeline li {
  position: relative;
  padding: 0 0 1.75rem 2.75rem;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: 4px; top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg);
}
.timeline .year {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}
.timeline .ev {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.5;
}

/* =================================================================
   FORM
   ================================================================= */
.form-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid .full { grid-column: 1 / -1; }
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.field label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.field label .req { color: var(--accent); }
.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--ink);
  transition: border-color 200ms, box-shadow 200ms;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(243, 115, 34, 0.20);
}
.field textarea { min-height: 120px; resize: vertical; }
.check {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}
.check a { color: var(--accent); }

/* =================================================================
   WIZARD · multi-step form
   ================================================================= */
.wizard-progress {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: var(--header-h);
  z-index: 40;
}
.wizard-steps {
  display: flex;
  gap: 0;
  align-items: center;
  padding: 1rem 0;
  font-size: 0.875rem;
}
.wizard-step {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex: 0 0 auto;
  color: var(--ink-mute);
  cursor: pointer;
  transition: color 200ms;
}
.wizard-step.is-current { color: var(--ink); font-weight: 700; }
.wizard-step.is-done    { color: var(--accent); }
.wizard-step .step-num {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid currentColor;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.8125rem;
  font-weight: 700;
}
.wizard-step.is-current .step-num,
.wizard-step.is-done .step-num {
  background: currentColor;
  color: #fff;
}
.wizard-step.is-current .step-num span,
.wizard-step.is-done .step-num span { color: #fff; }
.wizard-step .step-line {
  flex: 1;
  height: 2px;
  background: var(--line);
  margin: 0 0.875rem;
  min-width: 40px;
}
.wizard-step.is-done + .wizard-step .step-line,
.wizard-step.is-done .step-line { background: var(--accent); }

.wizard-step-content {
  display: none;
  padding: clamp(2rem, 4vw, 3rem) 0;
}
.wizard-step-content.is-active { display: block; }
.wizard-actions {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.wizard-success {
  text-align: center;
  padding: clamp(3rem, 6vw, 5rem) 0;
}
.wizard-success-icon {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin: 0 auto 1.5rem;
  font-size: 2.5rem;
  font-weight: 700;
}

/* Wizard option cards · click to select */
.wizard-options {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .wizard-options.cols-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 700px) { .wizard-options.cols-3 { grid-template-columns: repeat(3, 1fr); } }
.wizard-option {
  display: block;
  position: relative;                    /* contexto positioning para el radio */
  background: var(--surface-2);
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  transition: border-color 200ms, transform 200ms, background 200ms;
  text-decoration: none;
  color: inherit;
}
.wizard-option:hover { border-color: var(--ink); transform: translateY(-2px); }

/* Radio oculto dentro del label · clip + size 0 evita scroll automático del navegador */
.wizard-option input {
  position: absolute;
  inset: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  margin: 0;
  overflow: hidden;
  white-space: nowrap;
}
.wizard-option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.wizard-option .o-tag {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin-bottom: 0.5rem;
}
.wizard-option h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0 0 0.375rem;
}
.wizard-option p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

/* =================================================================
   EMERGENCIA · hero rojo crítico
   ================================================================= */
.emergency-hero {
  background: linear-gradient(135deg, #D9342B 0%, #B7271F 100%);
  color: #fff;
  padding: clamp(3rem, 7vw, 5rem) 0 clamp(2.5rem, 5vw, 4rem);
}
.emergency-hero .eyebrow { color: rgba(255,255,255,0.85); }
.emergency-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0.5rem 0 1rem;
  color: #fff;
  max-width: 18ch;
}
.emergency-hero .lead {
  color: rgba(255,255,255,0.88);
  font-size: 1.125rem;
  max-width: 50ch;
  margin: 0 0 2rem;
}
.emergency-phone {
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  text-decoration: none;
  color: #fff;
  margin-bottom: 1rem;
  transition: background 200ms;
  cursor: pointer;
}
.emergency-phone:hover { background: rgba(0,0,0,0.35); }
.emergency-phone .lbl {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
}
.emergency-phone .num {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1;
}
.emergency-phone .meta {
  font-size: 0.8125rem;
  opacity: 0.85;
  margin-top: 0.25rem;
}
.emergency-form {
  background: var(--surface-2);
  color: var(--ink);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: 0 10px 32px rgba(0,0,0,0.18);
}
.emergency-form h3 {
  margin: 0 0 0.25rem;
  font-size: 1.125rem;
  font-weight: 700;
}
.emergency-form .timer {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-mute);
  margin: 0 0 1.25rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* =================================================================
   TABLE
   ================================================================= */
.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.tbl th, .tbl td {
  text-align: left;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--line);
}
.tbl thead th {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  background: var(--surface);
}
.tbl tbody tr:hover { background: var(--surface); }

/* =================================================================
   SVC CARDS · grid 2-col con slideshow (estilo wireframe v3.2)
   ================================================================= */
.svc-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}
@media (min-width: 800px) { .svc-grid { grid-template-columns: repeat(2, 1fr); } }

.svc-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  padding-top: 2.5rem;
  position: relative;
  transition: border-color 200ms, transform 200ms;
  display: flex;
  flex-direction: column;
}
.svc-card:hover { border-color: var(--ink); transform: translateY(-3px); }
.svc-card .svc-num {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
}
.svc-card .card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  transition: transform 200ms;
}
.svc-card:hover .card-icon { transform: scale(1.08) rotate(-3deg); }
.svc-card .card-icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Color variants para svc-card · borde top + icon background coloreados */
.svc-card { position: relative; overflow: hidden; }
.svc-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 4px;
  width: 60px;
  background: var(--accent);
  transition: width 300ms ease;
}
.svc-card:hover::before { width: 100%; }

.svc-card.c-orange::before   { background: var(--brand-orange); }
.svc-card.c-orange .card-icon { background: #FFE4D0; color: #C24A0E; }

.svc-card.c-steel::before    { background: var(--brand-steel); }
.svc-card.c-steel .card-icon { background: #DCE9F2; color: var(--brand-steel); }

.svc-card.c-amber::before    { background: #F89834; }
.svc-card.c-amber .card-icon { background: #FFEDD5; color: #B45309; }

.svc-card.c-graphite::before    { background: var(--brand-graphite); }
.svc-card.c-graphite .card-icon { background: #E5E5E5; color: var(--brand-graphite); }

.svc-card.c-teal::before     { background: #0E7C7B; }
.svc-card.c-teal .card-icon { background: #D1F0EE; color: #0E7C7B; }

.svc-card.c-crimson::before   { background: #B91C1C; }
.svc-card.c-crimson .card-icon { background: #FEE2E2; color: #B91C1C; }

.svc-card.c-violet::before   { background: #5B4FA8; }
.svc-card.c-violet .card-icon { background: #E3DEF7; color: #5B4FA8; }

.svc-card.c-emerald::before   { background: #047857; }
.svc-card.c-emerald .card-icon { background: #D1FAE5; color: #047857; }

/* Dark diferenciador icons como SVG */
.diff-dark-card .icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Wizard success icon */
.wizard-success-icon svg {
  width: 40px;
  height: 40px;
  stroke: currentColor;
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.svc-card h3 {
  margin: 0 0 0.625rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
}
.svc-card > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.55;
}
.svc-card .svc-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.5rem;
}
.svc-card .svc-list li {
  font-size: 0.875rem;
  color: var(--ink);
  padding-left: 1.125rem;
  position: relative;
}
.svc-card .svc-list li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* =================================================================
   SLIDESHOW · dentro de cada svc-card (placeholder ahora, imágenes después)
   ================================================================= */
.svc-slideshow {
  position: relative;
  margin: 0 -1.5rem 1.5rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.svc-slideshow .slides {
  position: relative;
  width: 100%;
  height: 100%;
}
.svc-slideshow .slide {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, var(--surface) 0 14px, var(--surface-2) 14px 28px);
  display: grid;
  place-items: center;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-align: center;
  padding: 1rem;
  opacity: 0;
  transition: opacity 300ms ease;
}
.svc-slideshow .slide.is-active { opacity: 1; }
.svc-slideshow .slide-tag {
  display: inline-block;
  background: var(--surface-2);
  border: 1px dashed var(--line-strong);
  padding: 0.5rem 0.875rem;
  border-radius: 3px;
}
.svc-slideshow .slide-counter {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: rgba(255,255,255,0.95);
  border: 1px solid var(--line);
  padding: 3px 7px;
  border-radius: 3px;
  z-index: 2;
}
.svc-slideshow .nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink);
  border-radius: 50%;
  display: grid;
  place-items: center;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  transition: background 200ms, color 200ms, border-color 200ms;
  z-index: 2;
  padding: 0;
}
.svc-slideshow .nav-btn:hover {
  background: var(--brand-ink);
  color: #fff;
  border-color: var(--ink);
}
.svc-slideshow .nav-prev { left: 0.5rem; }
.svc-slideshow .nav-next { right: 0.5rem; }
.svc-slideshow .dots {
  position: absolute;
  bottom: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.375rem;
  background: rgba(255,255,255,0.95);
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  z-index: 2;
}
.svc-slideshow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line-strong);
  border: 0;
  padding: 0;
  cursor: pointer;
  transition: background 200ms, width 200ms;
}
.svc-slideshow .dot.is-active {
  background: var(--accent);
  width: 20px;
  border-radius: 999px;
}

/* =================================================================
   DARK DIFERENCIADOR · sección oscura con 6 cards (wireframe v3.2)
   ================================================================= */
.diff-dark-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}
@media (min-width: 700px) { .diff-dark-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .diff-dark-grid { grid-template-columns: repeat(3, 1fr); } }
.diff-dark-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  color: rgba(255,255,255,0.85);
  transition: background 200ms;
}
.diff-dark-card:hover { background: rgba(255,255,255,0.07); }
.diff-dark-card .icon {
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--brand-orange-light);
  color: var(--brand-orange-light);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  font-weight: 700;
}
.diff-dark-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 0.5rem;
}
.diff-dark-card p {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.5;
}

/* =================================================================
   GO-TO-TOP · botón flotante con anillo de progreso de scroll
   ================================================================= */
.go-top {
  position: fixed;
  right: clamp(1rem, 2.5vw, 1.75rem);
  bottom: clamp(1rem, 2.5vw, 1.75rem);
  width: 56px;
  height: 56px;
  z-index: 90;
  cursor: pointer;
  border: 0;
  padding: 0;
  background: transparent;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 250ms ease, transform 250ms ease, visibility 250ms ease;
}
.go-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.go-top:hover { transform: translateY(-3px); }
.go-top:hover .go-top-bg { background: var(--brand-ink); }
.go-top:hover .go-top-bg svg { stroke: var(--accent); }

.go-top svg.go-top-ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
  pointer-events: none;
}
.go-top svg.go-top-ring .track {
  fill: none;
  stroke: rgba(31,31,31,0.10);
  stroke-width: 3;
}
.go-top svg.go-top-ring .progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 163.36;          /* 2π·26 (radio 26 con stroke=3) */
  stroke-dashoffset: 163.36;         /* arranca vacío */
  transition: stroke-dashoffset 80ms linear;
}
.go-top-bg {
  position: absolute;
  inset: 6px;
  background: var(--surface-2);
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.10);
  transition: background 200ms;
}
.go-top-bg svg {
  width: 18px;
  height: 18px;
  stroke: var(--ink);
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 200ms;
}
.go-top-pct {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 3px;
  opacity: 0;
  transition: opacity 150ms;
  pointer-events: none;
  white-space: nowrap;
}
.go-top:hover .go-top-pct { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  .go-top, .go-top:hover { transform: none; }
}

/* =================================================================
   MOBILE NAV · hamburguesa + panel (v4.2)
   Antes de esto NO existía navegación en <1024px.
   ================================================================= */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  place-items: center;
  padding: 0;
  flex-shrink: 0;
  transition: color 200ms, background 200ms;
}
.nav-toggle:hover { color: var(--accent); background: var(--surface-2); }
.nav-toggle svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}
.nav-toggle .icon-close { display: none; }
body.nav-open .nav-toggle .icon-open { display: none; }
body.nav-open .nav-toggle .icon-close { display: block; }

@media (max-width: 1024px) {
  .nav-toggle { display: grid; }

  /* Panel desplegable bajo el header */
  body.nav-open .nav-main {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 32px rgba(0,0,0,0.45);
    padding: 0.5rem 0 1rem;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    z-index: 49;
  }
  body.nav-open .nav-main > a,
  body.nav-open .nav-main .has-dropdown > a {
    display: block;
    padding: 0.875rem var(--gutter);
    font-size: 1rem;
    border-bottom: 1px solid var(--line);
  }
  body.nav-open .nav-main a[aria-current="page"]::after { display: none; }

  /* Dropdown de industrias plano y visible dentro del panel */
  body.nav-open .has-dropdown { position: static; }
  body.nav-open .has-dropdown .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    background: var(--surface);
    min-width: 0;
    padding: 0.25rem 0;
  }
  body.nav-open .dropdown a { padding: 0.625rem calc(var(--gutter) + 1rem); }
  body.nav-open .dropdown .dd-tag { padding: 0.5rem calc(var(--gutter) + 1rem) 0.25rem; }
  body.nav-open .dropdown .dd-divider { margin: 0.25rem var(--gutter); }

  /* Bloquear scroll del fondo con el panel abierto */
  body.nav-open { overflow: hidden; }
}

/* Header compacto en pantallas chicas */
@media (max-width: 560px) {
  :root { --header-h: 64px; }
  .brand-logo { height: 38px; }
  .header-ctas { gap: 0.375rem; }
  .header-ctas .btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }
  .hero h1 { font-size: clamp(1.75rem, 8vw, 2.25rem); }
  .hero .lead { font-size: 1rem; }
}
@media (max-width: 400px) {
  .header-ctas .btn-emergency { display: none; } /* queda accesible vía menú y footer */
}

/* Wizard steps · scroll horizontal sin desbordar */
@media (max-width: 700px) {
  .wizard-steps {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-right: var(--gutter);
  }
  .wizard-steps::-webkit-scrollbar { display: none; }
  .wizard-step { white-space: nowrap; }
  .wizard-step .step-line { min-width: 24px; }
  .wizard-actions { flex-direction: column-reverse; align-items: stretch; }
  .wizard-actions .btn { justify-content: center; }
}

/* Tablas · scroll horizontal en móvil */
@media (max-width: 700px) {
  .tbl {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
}

/* CTA y hero-stats respiran mejor en móvil */
@media (max-width: 700px) {
  .hero-stats .item { padding: 1rem var(--gutter); }
  .hero-stats .num { font-size: 1.375rem; }
  .hero-stats .lbl { font-size: 0.6875rem; }
  .cta { padding: 2rem 1.5rem; }
}

/* =================================================================
   FOCUS / a11y
   ================================================================= */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}