/* ============================================
   SISSA — Suministro de Insumos Siderúrgicos
   Shared stylesheet
   ============================================ */

:root {
  /* Paleta "Grafito y Acero Fundido".
     Los nombres de variables se conservan para no romper referencias;
     sus valores ahora son grafito (base oscura) y cobre/ambar (acento). */
  --navy-deep: #14181d;   /* grafito negro — base más oscura */
  --navy: #262d36;        /* grafito acero — marca oscura / títulos */
  --blue-mid: #c0682b;    /* cobre — acento (botones, eyebrows, links) */
  --blue-light: #e3b489;  /* cobre claro / arena — acento sobre fondo oscuro */
  --white: #ffffff;
  --gray-text: #2d2d2d;
  --gray-bg: #f4f1ec;     /* off-white cálido */
  --gray-border: #e6ded3; /* borde cálido */

  --shadow-sm: 0 2px 8px rgba(20,24,29, 0.08);
  --shadow-md: 0 8px 24px rgba(20,24,29, 0.12);
  --shadow-lg: 0 16px 48px rgba(20,24,29, 0.18);

  --radius: 6px;
  --radius-lg: 12px;
  --container: 1240px;

  --font-display: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--gray-text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .6em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

a { color: inherit; text-decoration: none; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}
.section--tight { padding: 72px 0; }

.eyebrow {
  font-family: var(--font-display);
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--blue-mid);
  margin-bottom: 14px;
  display: inline-block;
}
.section--dark .eyebrow { color: var(--blue-light); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
  text-align: center;
}
.btn--primary {
  background: var(--blue-mid);
  color: var(--white);
  border-color: var(--blue-mid);
  box-shadow: 0 4px 14px rgba(192,104,43, .35);
}
.btn--primary:hover { background: #a4561f; border-color: #a4561f; transform: translateY(-1px); }

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.5);
}
.btn--outline:hover { border-color: var(--white); background: rgba(255,255,255,.08); }

/* When .btn--outline lives in a light context (product card on white), invert to be visible */
.section:not(.section--dark) .product-card .btn--outline {
  color: var(--navy);
  border-color: var(--navy);
}
.section:not(.section--dark) .product-card .btn--outline:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

.btn--outline-dark {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn--outline-dark:hover { background: var(--navy); color: var(--white); }

.btn--sm { padding: 10px 18px; font-size: .85rem; }

/* ============ NAVBAR ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
  padding: 18px 0;
}
.nav.is-scrolled {
  background: var(--navy);
  box-shadow: 0 2px 16px rgba(0,0,0,.25);
  padding: 12px 0;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}
.nav__logo img {
  height: 52px;
  width: auto;
  display: block;
}
.nav.is-scrolled .nav__logo img,
.nav--scrolled .nav__logo img { height: 46px; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  color: var(--white);
  padding: 10px 16px;
  font-size: .92rem;
  font-weight: 500;
  border-radius: 4px;
  transition: color .18s ease, background .18s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav__link:hover, .nav__link.is-active { color: var(--blue-light); }

.nav__dropdown { position: relative; }
.nav__dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all .2s ease;
}
.nav__dropdown:hover .nav__dropdown-menu,
.nav__dropdown:focus-within .nav__dropdown-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav__dropdown-menu a {
  display: block;
  padding: 12px 16px;
  color: var(--gray-text);
  font-size: .92rem;
  border-radius: 6px;
  font-weight: 500;
  transition: background .15s ease, color .15s ease;
}
.nav__dropdown-menu a:hover { background: var(--gray-bg); color: var(--navy); }
.nav__caret { transition: transform .2s ease; }
.nav__dropdown:hover .nav__caret { transform: rotate(180deg); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--blue-mid);
  color: var(--white);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .9rem;
  transition: background .18s ease, transform .18s ease;
}
.nav__cta:hover { background: var(--blue-light); color: var(--navy); transform: translateY(-1px); }

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  position: relative;
}
.nav__burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  margin: 5px auto;
  transition: transform .3s ease, opacity .3s ease;
}
.nav.is-open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 920px) {
  .nav__links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(360px, 86vw);
    background: var(--navy);
    flex-direction: column;
    align-items: stretch;
    padding: 96px 24px 32px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform .3s ease;
    box-shadow: -8px 0 32px rgba(0,0,0,.3);
  }
  .nav.is-open .nav__links { transform: translateX(0); }
  .nav__link { padding: 14px 18px; font-size: 1rem; }
  .nav__dropdown-menu {
    position: static;
    background: rgba(255,255,255,.06);
    box-shadow: none;
    margin-top: 6px;
    opacity: 1; visibility: visible; transform: none;
    padding: 4px;
  }
  .nav__dropdown-menu a { color: var(--white); font-size: .9rem; }
  .nav__dropdown-menu a:hover { background: rgba(255,255,255,.1); color: var(--blue-light); }
  .nav__cta { display: none; }
  .nav__burger { display: block; z-index: 110; position: relative; }
  .nav.is-scrolled { padding: 12px 0; }
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background-color: var(--navy-deep);
  color: var(--white);
  overflow: hidden;
  padding: 140px 0 80px;
}
/* Hero with background image (set --hero-bg inline) */
.hero--with-image {
  background-image:
    linear-gradient(120deg, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0.45) 50%, rgba(0,0,0,0.30) 100%),
    var(--hero-bg);
  background-size: cover;
  background-position: center;
}
.hero__pattern {
  position: absolute;
  inset: 0;
  opacity: 1;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='92' viewBox='0 0 80 92'><g fill='none' stroke='%23ffffff' stroke-opacity='0.03' stroke-width='1'><polygon points='40,2 76,23 76,69 40,90 4,69 4,23'/></g></svg>");
  background-size: 160px 184px;
}
.hero--with-image .hero__pattern { opacity: 0; }
.hero__glow {
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(192,104,43,.25), transparent 60%);
  top: -200px; right: -200px;
  pointer-events: none;
}
.hero--with-image .hero__glow { display: none; }
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 1100px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(227,180,137, .12);
  border: 1px solid rgba(227,180,137, .35);
  color: var(--blue-light);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: .82rem;
  font-weight: 500;
  margin-bottom: 28px;
  font-family: var(--font-display);
  letter-spacing: .02em;
}
.hero__badge::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--blue-light);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--blue-light);
}
.hero h1 {
  text-wrap: balance;
  margin-bottom: 24px;
}
.hero h1 em { color: var(--blue-light); font-style: normal; }
.hero__sub {
  font-size: 1.18rem;
  color: rgba(255,255,255,.78);
  max-width: 680px;
  margin-bottom: 40px;
  text-wrap: pretty;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.5);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  font-family: var(--font-display);
}
.hero__scroll::after {
  content: "";
  width: 1px; height: 36px;
  background: rgba(255,255,255,.3);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(.4); opacity: .3; transform-origin: top; }
  50% { transform: scaleY(1); opacity: 1; transform-origin: top; }
}

/* Compact hero for inner pages */
.page-hero {
  background-color: var(--navy-deep);
  color: var(--white);
  padding: 180px 0 100px;
  position: relative;
  overflow: hidden;
}
/* Page hero with background image (set --hero-bg inline) */
.page-hero--with-image {
  background-image:
    linear-gradient(120deg, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0.48) 55%, rgba(0,0,0,0.40) 100%),
    var(--hero-bg);
  background-size: cover;
  background-position: center;
}
.page-hero__pattern {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='92' viewBox='0 0 80 92'><g fill='none' stroke='%23ffffff' stroke-opacity='0.04' stroke-width='1'><polygon points='40,2 76,23 76,69 40,90 4,69 4,23'/></g></svg>");
  background-size: 140px 162px;
  pointer-events: none;
}
.page-hero--with-image .page-hero__pattern { opacity: 0; }
.page-hero__inner { position: relative; z-index: 2; }
.crumbs {
  font-size: .82rem;
  letter-spacing: .04em;
  color: rgba(255,255,255,.6);
  margin-bottom: 18px;
  font-family: var(--font-display);
}
.crumbs a { color: var(--blue-light); }
.crumbs a:hover { text-decoration: underline; }
.crumbs span { margin: 0 8px; opacity: .5; }

.page-hero h1 { margin-bottom: 16px; max-width: 880px; }
.page-hero__sub { color: rgba(255,255,255,.78); font-size: 1.1rem; max-width: 720px; }

/* ============ STATS ============ */

/* ============ SECTION HEADERS ============ */
.section__head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.section__head--left { text-align: left; margin-left: 0; }
.section__head p { color: rgba(45,45,45,.72); font-size: 1.08rem; text-wrap: pretty; }
.section--dark .section__head p { color: rgba(255,255,255,.75); }

/* ============ ABOUT (3 columns) ============ */
.section--alt { background: var(--gray-bg); }
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.pillar {
  background: var(--white);
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}
.pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.pillar__icon {
  width: 48px; height: 48px;
  background: rgba(227,180,137,.18);
  border-radius: 12px;
  display: grid; place-items: center;
  color: var(--navy);
  margin-bottom: 20px;
}
.pillar h3 { font-size: 1.18rem; margin-bottom: 10px; color: var(--navy); }
.pillar p { color: rgba(45,45,45,.72); font-size: .96rem; margin: 0; }
@media (max-width: 820px) { .pillars { grid-template-columns: 1fr; } }

/* ============ PRODUCTS (dark) ============ */
.section--dark {
  background: var(--navy);
  color: var(--white);
  position: relative;
}
.section--dark h2 { color: var(--white); }

.products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.product-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.product-card:hover {
  border-color: var(--blue-mid);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(20,24,29,.10);
}
.product-card__icon {
  width: 64px; height: 64px;
  background: var(--blue-mid);
  border-radius: 14px;
  display: grid; place-items: center;
  color: var(--white);
  margin-bottom: 24px;
}
.product-card h3 {
  color: var(--navy);
  font-size: 1.4rem;
  margin-bottom: 14px;
}
.product-card p {
  color: rgba(45,45,45,.78);
  font-size: .96rem;
  margin-bottom: 22px;
  flex: 1;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.tag {
  font-family: var(--font-display);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .04em;
  background: rgba(192,104,43,.10);
  color: var(--blue-mid);
  border: 1px solid rgba(192,104,43,.22);
  padding: 6px 12px;
  border-radius: 100px;
}

/* Dark variant: when product cards live inside a dark section */
.section--dark .product-card {
  background: rgba(255,255,255,.04);
  border-color: rgba(255,255,255,.1);
}
.section--dark .product-card:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(227,180,137,.4);
  box-shadow: none;
}
.section--dark .product-card h3 { color: var(--white); }
.section--dark .product-card p { color: rgba(255,255,255,.74); }
.section--dark .tag {
  background: rgba(227,180,137,.15);
  color: var(--blue-light);
  border-color: rgba(227,180,137,.25);
}
.product-card .btn {
  align-self: flex-start;
}
@media (max-width: 920px) { .products { grid-template-columns: 1fr; } }

/* Two-column variant for the products section */
.products--two { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 920px) { .products--two { grid-template-columns: 1fr; } }

/* Dark variant of eyebrow for light/alt sections */
.eyebrow--dark {
  color: var(--blue-mid) !important;
}

/* Service feature (horizontal card on Services section) */
.service-feature, .alliance-feature {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 40px;
}
.service-feature__media,
.alliance-feature__logo { width: 100%; }
.service-feature__body h3,
.alliance-feature__body h3 {
  font-size: 1.8rem;
  color: var(--navy);
  margin: 8px 0 14px;
  letter-spacing: -0.01em;
}
.service-feature__body p,
.alliance-feature__body p {
  color: rgba(45,45,45,.78);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 18px;
}
.service-feature__list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.service-feature__list li {
  position: relative;
  padding-left: 22px;
  font-size: .94rem;
  color: rgba(45,45,45,.78);
  margin-bottom: 8px;
}
.service-feature__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--blue-mid);
  border-radius: 50%;
}
@media (max-width: 880px) {
  .service-feature, .alliance-feature { grid-template-columns: 1fr; padding: 24px; gap: 24px; }
}

/* Alliance cards grid (alianzas.html) */
.alliances-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.alliance-card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.alliance-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(20,24,29,.10);
}
.alliance-card__logo { width: 100%; }
.alliance-card__body { padding: 28px 32px 32px; display: flex; flex-direction: column; flex: 1; }
.alliance-card__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: rgba(192,104,43,.12);
  color: var(--blue-mid);
  padding: 5px 12px;
  border-radius: 100px;
  align-self: flex-start;
  margin-bottom: 12px;
}
.alliance-card__tag--muted {
  background: rgba(45,45,45,.08);
  color: rgba(45,45,45,.55);
}
.alliance-card__body h3 {
  font-size: 1.5rem;
  color: var(--navy);
  margin: 0 0 12px;
}
.alliance-card__body p {
  color: rgba(45,45,45,.78);
  font-size: .95rem;
  line-height: 1.55;
  margin-bottom: 18px;
}
.alliance-card__points {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex: 1;
}
.alliance-card__points li {
  position: relative;
  padding-left: 20px;
  font-size: .88rem;
  color: rgba(45,45,45,.7);
  margin-bottom: 6px;
}
.alliance-card__points li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--blue-mid);
  font-weight: 700;
}
.alliance-card--placeholder { opacity: .85; border-style: dashed; }
.alliance-card .btn { align-self: flex-start; }

@media (max-width: 880px) { .alliances-grid { grid-template-columns: 1fr; } }


/* Resources grid (catalogs/PDF placeholders) */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 720px) { .resources-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .resources-grid { grid-template-columns: 1fr; } }

/* ============ WHY SISSA (2x2) ============ */
.differentiators {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.differentiator {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 28px;
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg);
  background: var(--white);
  transition: border-color .25s ease, box-shadow .25s ease;
}
.differentiator:hover {
  border-color: var(--blue-light);
  box-shadow: var(--shadow-sm);
}
.differentiator__icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: var(--gray-bg);
  color: var(--navy);
  border-radius: 10px;
  display: grid; place-items: center;
}
.differentiator h3 { font-size: 1.1rem; margin-bottom: 6px; color: var(--navy); }
.differentiator p { color: rgba(45,45,45,.72); margin: 0; font-size: .94rem; }
@media (max-width: 820px) { .differentiators { grid-template-columns: 1fr; } }

/* ============ TARGETS ============ */
.targets {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin: 16px 0 40px;
}
.target-chip {
  background: var(--white);
  border: 2px solid var(--navy);
  color: var(--navy);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 18px 32px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .2s ease, color .2s ease;
}
.target-chip:hover { background: var(--navy); color: var(--white); }
.targets-quote {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.15rem;
  color: var(--navy);
  font-family: var(--font-display);
  font-weight: 500;
  text-wrap: balance;
}

/* Clients split layout (image left, content right) */
.clients-split {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 56px;
  align-items: center;
}
.clients-split__media { width: 100%; }
.clients-split__body .targets {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  justify-content: flex-start;
}
.clients-split__body .target-chip {
  font-size: .95rem;
  padding: 12px 22px;
}
.clients-split__body .targets-quote {
  text-align: left;
  margin: 28px 0 0;
  max-width: 100%;
  font-size: 1.05rem;
  font-style: italic;
}
@media (max-width: 880px) {
  .clients-split { grid-template-columns: 1fr; gap: 32px; }
}

/* ============ CONTACT ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  margin-top: 48px;
  align-items: start;
}
.contact-info h3 { color: var(--white); font-size: 1.2rem; margin-top: 24px; margin-bottom: 8px; }
.contact-info h3:first-child { margin-top: 0; }
.contact-info p, .contact-info a {
  color: rgba(255,255,255,.78);
  font-size: .98rem;
  margin: 0;
}
.contact-info a { display: inline-flex; align-items: center; gap: 8px; }
.contact-info a:hover { color: var(--blue-light); }
.contact-info__row { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.contact-info__icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  background: rgba(227,180,137,.15);
  color: var(--blue-light);
  border-radius: 8px;
  display: grid; place-items: center;
}
.contact-info__row > div h4 {
  color: var(--white);
  font-size: .88rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-family: var(--font-display);
  margin: 0 0 4px;
}

.form {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  color: var(--gray-text);
}
.form h3 { color: var(--navy); margin-bottom: 6px; }
.form > p { color: rgba(45,45,45,.65); font-size: .92rem; margin-bottom: 24px; }
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--navy);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .96rem;
  color: var(--gray-text);
  background: var(--white);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue-mid);
  box-shadow: 0 0 0 3px rgba(192,104,43,.18);
}
.field textarea { resize: vertical; min-height: 110px; }
.form .btn { width: 100%; justify-content: center; padding: 16px; }
.form__legal {
  font-size: .78rem;
  color: rgba(45,45,45,.5);
  margin: 14px 0 0;
  text-align: center;
}
.form__success {
  display: none;
  padding: 20px;
  background: #e8f4ec;
  border: 1px solid #b6dcc1;
  color: #1f5f33;
  border-radius: var(--radius);
  font-size: .94rem;
  margin-bottom: 18px;
}
.form.is-sent .form__success { display: block; }
.form__error {
  display: none; padding: 20px; background: #fbeaea; border: 1px solid #e6b8b8; color: #8a2424;
  border-radius: var(--radius); font-size: .94rem; margin-bottom: 18px;
}
.form__error a { color: inherit; text-decoration: underline; }
.form.is-error .form__error { display: block; }
.form__trap { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }
.form .btn:disabled { opacity: .6; cursor: wait; }

@media (max-width: 920px) {
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .form { padding: 28px; }
  .form__row { grid-template-columns: 1fr; gap: 0; }
}

/* ============ FOOTER ============ */
.footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,.7);
  padding: 64px 0 24px;
  font-size: .92rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer__brand {
  margin-bottom: 14px;
  line-height: 0;
}
.footer__brand img {
  height: 72px;
  width: auto;
  display: block;
  background: var(--white);
  border-radius: 8px;
  padding: 6px 10px;
}
.footer__tag { color: rgba(255,255,255,.55); font-size: .88rem; max-width: 280px; }
.footer h4 {
  color: var(--white);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer a { transition: color .15s ease; }
.footer a:hover { color: var(--blue-light); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .82rem;
  color: rgba(255,255,255,.45);
}
@media (max-width: 820px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* ============ PRODUCT PAGE LAYOUT ============ */
.prod-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  align-items: start;
  margin-top: 24px;
}
@media (max-width: 920px) { .prod-layout { grid-template-columns: 1fr; } }

.prod-body h2 {
  font-size: 1.7rem;
  color: var(--navy);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--gray-border);
}
.prod-body h2:first-child { margin-top: 0; }
.prod-body h3 { color: var(--navy); font-size: 1.15rem; margin-top: 24px; }
.prod-body p { color: rgba(45,45,45,.82); }
.prod-body ul { padding-left: 22px; color: rgba(45,45,45,.82); }
.prod-body li { margin-bottom: 8px; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 8px;
  font-size: .94rem;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-border);
}
.spec-table th {
  background: var(--gray-bg);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--navy);
}
.spec-table tbody tr:hover { background: rgba(227,180,137,.08); }
.spec-table td:first-child { font-weight: 600; color: var(--navy); }

.prod-aside {
  position: sticky;
  top: 100px;
  background: var(--gray-bg);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--gray-border);
}
.prod-aside h3 {
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 6px;
}
.prod-aside p { font-size: .92rem; color: rgba(45,45,45,.72); margin-bottom: 18px; }
.prod-aside .btn { width: 100%; justify-content: center; }
.prod-aside hr { border: none; border-top: 1px solid var(--gray-border); margin: 20px 0; }
.prod-aside__item { display: flex; gap: 10px; margin-bottom: 12px; align-items: flex-start; }
.prod-aside__item svg { flex-shrink: 0; color: var(--blue-mid); margin-top: 2px; }
.prod-aside__item span { font-size: .88rem; color: var(--gray-text); }

/* Ferro flip catalog */
.ferro-catalog {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 28px 0 8px;
}
@media (max-width: 1080px) { .ferro-catalog { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 780px)  { .ferro-catalog { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px)  { .ferro-catalog { grid-template-columns: 1fr; } }

/* ============ CONTACT OPTIONS (3 CTA cards) ============ */
.contact-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 48px 0 56px;
}
.contact-option {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: background .25s ease, border-color .25s ease, transform .25s ease;
  text-decoration: none;
}
.contact-option:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(227,180,137,0.4);
  transform: translateY(-3px);
}
.contact-option__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(227,180,137,0.15);
  color: var(--blue-light);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}
.contact-option__title {
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 10px;
  font-weight: 600;
}
.contact-option__desc {
  color: rgba(255,255,255,0.72);
  font-size: .92rem;
  line-height: 1.55;
  margin: 0 0 22px;
  flex: 1;
}
.contact-option__cta {
  color: var(--blue-light);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}
.contact-option:hover .contact-option__cta { color: var(--white); }
.contact-option__cta svg { transition: transform .25s ease; }
.contact-option:hover .contact-option__cta svg { transform: translateX(4px); }
@media (max-width: 880px) {
  .contact-options { grid-template-columns: 1fr; }
}

/* ============ SUSTAINABILITY SPLIT (50/50 image + dark panel) ============ */
.sustainability-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 440px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(20,24,29,.10);
}
.sustainability-split__media {
  position: relative;
  background: #1a3a26;
  overflow: hidden;
}
.sustainability-split__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.sustainability-split__panel {
  background: var(--navy-deep);
  padding: 64px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--white);
  position: relative;
}
.sustainability-split__panel h2 {
  position: relative;
  color: var(--white);
  margin: 0 0 24px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  padding-left: 20px;
}
.sustainability-split__panel h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  bottom: 8px;
  background: #6ba83b;
  border-radius: 2px;
}
.sustainability-split__panel p {
  color: rgba(255,255,255,0.82);
  line-height: 1.65;
  margin: 0 0 32px;
  font-size: 1rem;
  max-width: 520px;
}
.sustainability-split__cta {
  align-self: flex-start;
  background: #6ba83b;
  color: var(--white);
  border-color: #6ba83b;
  box-shadow: 0 4px 14px rgba(107,168,59,.35);
}
.sustainability-split__cta:hover {
  background: #568829;
  border-color: #568829;
  transform: translateY(-1px);
}
@media (max-width: 880px) {
  .sustainability-split { grid-template-columns: 1fr; }
  .sustainability-split__media { min-height: 280px; }
  .sustainability-split__panel { padding: 48px 32px; }
}

/* ============ ELECTRODE LIST (horizontal banner cards) ============ */
.electrode-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 880px;
  margin: 36px auto 0;
}
.electrode-banner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: 12px;
  align-items: center;
  padding: 24px 28px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.electrode-banner:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(20,24,29,.10);
  border-color: var(--blue-mid);
}
.electrode-banner__content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.electrode-banner__heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.electrode-banner__grade {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.01em;
  line-height: 1;
}
.electrode-banner__separator {
  color: rgba(45,45,45,.25);
  font-size: 1.2rem;
}
.electrode-banner__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: rgba(45,45,45,.7);
  font-weight: 500;
}
.electrode-banner__description {
  font-size: .92rem;
  color: rgba(45,45,45,.72);
  margin: 0;
  line-height: 1.5;
  max-width: 460px;
}
.electrode-banner__cta {
  font-size: .85rem;
  padding: 10px 18px;
  white-space: nowrap;
}
@media (max-width: 560px) {
  .electrode-banner {
    grid-template-columns: 1fr;
    padding: 20px;
  }
  .electrode-banner__cta {
    justify-self: stretch;
    text-align: center;
    justify-content: center;
  }
}

/* 3-column variant of feature-grid for compact spec tiles */
.feature-grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 720px) { .feature-grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .feature-grid--3 { grid-template-columns: 1fr; } }

.ferro-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.ferro-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(20,24,29,.10);
  border-color: var(--blue-mid);
}

/* Photo with chemical formula overlay */
.ferro-card__photo {
  position: relative;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #555 0%, #333 100%);
  overflow: hidden;
}
.ferro-card__photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.ferro-card__photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.10) 0%, rgba(0,0,0,0.55) 100%);
  z-index: 2;
}
.ferro-card__photo-label {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 3;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

/* Body */
.ferro-card__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 4px;
}
.prod-body .ferro-card__abbrev {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
  padding: 0;
  border: none;
}
.ferro-card__name {
  font-size: .68rem;
  color: rgba(45,45,45,.5);
  margin: 2px 0 10px !important;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}
.ferro-card__purpose {
  font-size: .85rem;
  color: rgba(45,45,45,.78) !important;
  line-height: 1.45;
  margin: 0 0 12px !important;
}
.ferro-card__specs {
  margin: 0 0 14px;
  padding: 12px 0 4px;
  border-top: 1px solid var(--gray-border);
  font-size: .8rem;
}
.ferro-card__specs > div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 0;
}
.ferro-card__specs dt {
  color: rgba(45,45,45,.6);
  font-weight: 400;
  flex-shrink: 0;
}
.ferro-card__specs dd {
  font-weight: 600;
  color: var(--navy);
  text-align: right;
  margin: 0;
}
.ferro-card .btn {
  margin-top: auto;
  width: 100%;
  justify-content: center;
  font-size: .8rem;
  padding: 9px 12px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}
.feature {
  padding: 20px;
  background: var(--gray-bg);
  border-left: 3px solid var(--blue-mid);
  border-radius: 0 8px 8px 0;
}
.feature h4 { font-family: var(--font-display); color: var(--navy); font-size: .98rem; margin: 0 0 6px; }
.feature p { font-size: .9rem; margin: 0; color: rgba(45,45,45,.72); }
@media (max-width: 620px) { .feature-grid { grid-template-columns: 1fr; } }

/* Placeholder hero illustration */
.placeholder-block {
  background:
    repeating-linear-gradient(
      45deg,
      var(--gray-bg),
      var(--gray-bg) 10px,
      #efe9e0 10px,
      #efe9e0 20px
    );
  border: 1.5px dashed var(--blue-light);
  border-radius: var(--radius-lg);
  padding: 80px 32px;
  text-align: center;
  color: var(--navy);
  font-family: "SF Mono", "Menlo", "Monaco", "Consolas", monospace;
  font-size: .9rem;
  letter-spacing: .04em;
}

/* Polished image placeholder — replace with <img> when available */
.image-placeholder {
  position: relative;
  background: linear-gradient(135deg, #3a444f 0%, #262d36 50%, #14181d 100%);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  color: rgba(255,255,255,0.55);
  min-height: 240px;
}
.image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 22px 16px at 22% 35%, rgba(255,255,255,0.10) 0%, transparent 70%),
    radial-gradient(ellipse 16px 12px at 70% 65%, rgba(255,255,255,0.07) 0%, transparent 70%),
    radial-gradient(circle 10px at 85% 25%, rgba(255,255,255,0.06) 0%, transparent 70%),
    radial-gradient(circle 12px at 40% 80%, rgba(255,255,255,0.05) 0%, transparent 70%);
}
.image-placeholder__icon {
  z-index: 1;
  color: rgba(255,255,255,0.4);
}
.image-placeholder__label {
  z-index: 1;
  font-family: var(--font-display);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.6);
  text-align: center;
  padding: 0 16px;
}
.image-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}
.image-placeholder--wide { aspect-ratio: 16/9; min-height: 0; }
.image-placeholder--square { aspect-ratio: 1/1; min-height: 0; }
.image-placeholder--tall { aspect-ratio: 3/4; min-height: 0; }
.image-placeholder--banner { aspect-ratio: 21/9; min-height: 0; }

/* ============ DERIVADOS — PLACEHOLDER ============ */
.coming-soon {
  text-align: center;
  padding: 100px 20px;
}
.coming-soon__icon {
  width: 100px; height: 100px;
  margin: 0 auto 32px;
  background: linear-gradient(135deg, var(--navy), var(--blue-mid));
  color: var(--white);
  border-radius: 24px;
  display: grid; place-items: center;
  box-shadow: var(--shadow-lg);
}
.coming-soon h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--navy);
  margin-bottom: 16px;
}
.coming-soon p {
  font-size: 1.15rem;
  color: rgba(45,45,45,.72);
  max-width: 620px;
  margin: 0 auto 32px;
  text-wrap: pretty;
}
.coming-soon__list {
  max-width: 540px;
  margin: 32px auto 40px;
  text-align: left;
  display: grid;
  gap: 10px;
}
.coming-soon__list li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--gray-bg);
  border-radius: var(--radius);
  font-size: .96rem;
  color: var(--navy);
  font-weight: 500;
}
.coming-soon__list svg { color: var(--blue-mid); flex-shrink: 0; }

/* ============ REVEAL ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger > *:nth-child(1) { transition-delay: .05s; }
.stagger > *:nth-child(2) { transition-delay: .15s; }
.stagger > *:nth-child(3) { transition-delay: .25s; }
.stagger > *:nth-child(4) { transition-delay: .35s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll::after { animation: none; }
  html { scroll-behavior: auto; }
}

/* Single alliance: center the card instead of leaving an empty column */
.alliances-grid > .alliance-card:only-child { grid-column: 1 / -1; justify-self: center; max-width: 620px; width: 100%; }

/* ============== SUBPRODUCTOS ============== */
.sub-benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.sub-benefit {
  background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px;
  padding: 28px 26px; border-top: 3px solid var(--blue-mid);
}
.sub-benefit h3 { font-family: var(--font-display); color: var(--navy); font-size: 1.15rem; margin: 0 0 10px; }
.sub-benefit p { margin: 0; color: rgba(45,45,45,.75); font-size: .96rem; line-height: 1.6; }

.sub-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.sub-step { background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px; padding: 32px 28px; }
.sub-step__num {
  display: inline-block; font-family: var(--font-display); font-size: 2.6rem; font-weight: 700;
  color: var(--blue-mid); line-height: 1; margin-bottom: 18px;
}
.sub-step h3 { font-family: var(--font-display); color: var(--navy); font-size: 1.15rem; margin: 0 0 10px; }
.sub-step p { margin: 0; color: rgba(45,45,45,.72); font-size: .96rem; line-height: 1.6; }

.sub-flows { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.sub-flow {
  background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px;
  padding: 26px 24px; display: flex; flex-direction: column;
}
.sub-flow h3 { font-family: var(--font-display); color: var(--navy); font-size: 1.08rem; margin: 0 0 8px; }
.sub-flow p { margin: 0; color: rgba(45,45,45,.72); font-size: .93rem; line-height: 1.55; }
.sub-flow .sub-flow__dest {
  margin-top: auto; padding-top: 16px; border-top: 1px solid var(--gray-border);
  color: rgba(45,45,45,.85);
}
.sub-flow > p:not(.sub-flow__dest) { margin-bottom: 16px; }
.sub-flow__dest span {
  display: block; font-size: .7rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue-mid); margin-bottom: 4px;
}
.sub-flow--other { background: transparent; border-style: dashed; justify-content: center; }

@media (max-width: 920px) {
  .sub-benefits, .sub-steps, .sub-flows { grid-template-columns: 1fr; }
}

/* ============== FERROALEACIONES: intro, grupos, info comercial ============== */
.ferro-intro { max-width: 760px; }
.ferro-intro h2 { margin: 0 0 12px; }
.ferro-intro p { margin: 0; color: rgba(45,45,45,.75); font-size: 1.05rem; line-height: 1.7; }
.ferro-group { margin-top: 48px; }
.ferro-group__head { padding-bottom: 12px; border-bottom: 1px solid var(--gray-border); }
.ferro-group__head h3 { font-family: var(--font-display); color: var(--navy); font-size: 1.3rem; margin: 0 0 6px; }
.ferro-group__head p { margin: 0; color: rgba(45,45,45,.68); font-size: .95rem; }
.ferro-note { margin: 28px 0 0; font-size: .9rem; color: rgba(45,45,45,.6); font-style: italic; }
.ferro-commercial { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 28px 0 0; }
.ferro-commercial__item { background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px; padding: 20px 22px; }
.ferro-commercial__item dt {
  font-size: .72rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue-mid); margin-bottom: 6px;
}
.ferro-commercial__item dd { margin: 0; color: var(--navy); font-size: 1rem; line-height: 1.5; }
.ferro-commercial__item--pending { border-style: dashed; }
.ferro-commercial__item--pending dd { color: rgba(45,45,45,.45); font-style: italic; }
@media (max-width: 880px) { .ferro-commercial { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .ferro-commercial { grid-template-columns: 1fr; } }

/* ============== ELECTRODOS ============== */
.page-hero--muted { background-color: #1c232b; background-blend-mode: normal, luminosity; }
.elec-intro { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: center; }
.elec-intro__text h2 { margin: 12px 0 18px; }
.elec-intro__text p { color: rgba(45,45,45,.78); font-size: 1.05rem; line-height: 1.7; margin: 0 0 14px; }
.elec-lines { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.elec-line {
  background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px;
  overflow: hidden; display: flex; flex-direction: column;
}
.elec-line .image-placeholder { border-radius: 0; }
.elec-line__body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.elec-line__tag {
  font-size: .7rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue-mid); margin-bottom: 8px;
}
.elec-line h3 { font-family: var(--font-display); color: var(--navy); font-size: 1.2rem; margin: 0 0 10px; }
.elec-line p { margin: 0 0 16px; color: rgba(45,45,45,.75); font-size: .95rem; line-height: 1.6; }
.elec-line .elec-line__meta {
  margin: auto 0 0; padding-top: 14px; border-top: 1px solid var(--gray-border);
  color: var(--navy); font-weight: 600;
}
.elec-line__meta span {
  display: block; font-size: .7rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: rgba(45,45,45,.55); margin-bottom: 4px;
}
.elec-table { margin-top: 32px; overflow-x: auto; }
.elec-table__note { font-size: .85rem; color: rgba(45,45,45,.6); margin: 10px 0 0; }
@media (max-width: 920px) {
  .elec-intro { grid-template-columns: 1fr; gap: 32px; }
  .elec-lines { grid-template-columns: 1fr; }
}

/* Foto de producto con fondo blanco: fondo gris claro para que no se funda con la tarjeta */
.image-placeholder--product { background: #ecebe8; }
.image-placeholder--product::before { display: none; }
.image-placeholder--product img { mix-blend-mode: multiply; }

/* ============== WHATSAPP ============== */
.wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 900;
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #25D366; color: #fff;
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
  transition: transform .2s ease, box-shadow .2s ease;
}
.wa-float:hover { transform: translateY(-2px) scale(1.04); box-shadow: 0 12px 28px rgba(0,0,0,.28); }
@media (max-width: 600px) { .wa-float { right: 16px; bottom: 16px; width: 52px; height: 52px; } }

/* Logos de fabricantes */
.image-placeholder--logo { background: #fff; border-bottom: 1px solid var(--gray-border); }
.image-placeholder--logo::before { display: none; }
.image-placeholder--logo img { object-fit: contain; padding: 12% 16%; }
.sinom-logo { display: block; width: 180px; height: auto; margin: 0 0 28px; }

/* Electrodos: grados */
.elec-grades { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.elec-grade {
  background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px;
  padding: 30px 28px; border-top: 3px solid var(--blue-mid);
}
.elec-grade__code { display: block; font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; color: var(--navy); line-height: 1; letter-spacing: -.02em; }
.elec-grade__name { display: block; margin: 8px 0 14px; font-size: .74rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--blue-mid); }
.elec-grade p { margin: 0; color: rgba(45,45,45,.75); font-size: .96rem; line-height: 1.6; }
.elec-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
@media (max-width: 920px) { .elec-grades, .elec-gallery { grid-template-columns: 1fr; } }
.spec-table--grouped .spec-group td {
  background: rgba(45,45,45,.03); font-family: var(--font-display); font-weight: 600;
  color: var(--navy); padding-top: 18px;
}
.spec-table--grouped .spec-sub td:first-child { font-weight: 400; color: rgba(45,45,45,.72); padding-left: 32px; }
.spec-table--grouped td:not(:first-child), .spec-table--grouped th:not(:first-child) { white-space: nowrap; }

/* Electrodos: tabla tipo matriz */
.spec-matrix { width: 100%; min-width: 980px; border-collapse: collapse; font-size: .9rem; text-align: center; }
.spec-matrix th, .spec-matrix td { border: 1px solid var(--gray-border); padding: 12px 10px; vertical-align: middle; }
.spec-matrix thead th {
  background: var(--navy); color: #fff; font-family: var(--font-display); font-weight: 600; font-size: .82rem; line-height: 1.3;
  border-color: rgba(255,255,255,.15);
}
.spec-matrix thead th small { display: block; font-family: var(--font-body, inherit); font-weight: 400; font-size: .72rem; opacity: .75; margin-top: 3px; }
.spec-matrix__sub th { background: #2c3440 !important; font-size: .74rem !important; letter-spacing: .04em; }
.spec-matrix td { color: rgba(45,45,45,.85); white-space: nowrap; }
.spec-matrix__grade { background: var(--gray-bg); color: var(--navy); font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; }
.spec-matrix__grade span { display: block; font-size: .66rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-mid); margin-top: 4px; }
.spec-matrix__dia { font-weight: 600; color: var(--navy) !important; background: rgba(45,45,45,.025); }
.spec-matrix tbody tr:nth-child(4n+3) td, .spec-matrix tbody tr:nth-child(4n+4) td { background: rgba(45,45,45,.025); }
.elec-strip { margin-top: 20px; }
.elec-strip img { object-position: 50% 60%; }

/* ============== SERVICIOS + SUSTENTABILIDAD (inicio) ============== */
.service-combo {
  margin-top: 40px; border: 1px solid var(--gray-border); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: 0 16px 48px rgba(20,24,29,.08);
}
.service-combo .service-feature--top { margin-top: 0; border: 0; border-radius: 0; }
.service-sustain {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 40px; align-items: center;
  padding: 32px; background: var(--navy-deep); color: #fff; scroll-margin-top: 90px;
}
.service-sustain .image-placeholder { border-radius: 8px; }
.service-sustain__eyebrow {
  display: inline-block; font-family: var(--font-display); font-size: .78rem; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase; color: #6ba83b; margin-bottom: 10px;
}
.service-sustain__body h3 { color: #fff; font-size: 1.6rem; margin: 0 0 14px; letter-spacing: -0.01em; }
.service-sustain__body p { color: rgba(255,255,255,.8); line-height: 1.65; margin: 0; max-width: 560px; }
@media (max-width: 880px) {
  .service-sustain { grid-template-columns: 1fr; gap: 24px; }
}
.service-sustain__body h3 { position: relative; padding-left: 18px; }
.service-sustain__body h3::before {
  content: ''; position: absolute; left: 0; top: 5px; bottom: 5px; width: 4px;
  background: #6ba83b; border-radius: 2px;
}
/* Zigzag: en la franja de sustentabilidad, texto a la izquierda y foto a la derecha */
.service-sustain { grid-template-columns: 1.4fr 1fr; }
.service-sustain__media { order: 2; }
.service-sustain__body { order: 1; padding-left: 8px; }
@media (max-width: 880px) {
  .service-sustain { grid-template-columns: 1fr; }
  .service-sustain__media { order: 0; }
  .service-sustain__body { padding-left: 0; }
}

/* ============== SINOM: portafolio por área ============== */
.sinom-areas { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; }
.sinom-area {
  background: var(--white); border: 1px solid var(--gray-border); border-radius: 8px;
  padding: 26px 24px; display: flex; flex-direction: column;
}
.sinom-area h3 { font-family: var(--font-display); color: var(--navy); font-size: 1.08rem; margin: 0 0 8px; }
.sinom-area p { margin: 0 0 16px; color: rgba(45,45,45,.72); font-size: .92rem; line-height: 1.55; }
.sinom-area ul { margin: 0; padding: 14px 0 0; border-top: 1px solid var(--gray-border); list-style: none; }
.sinom-area li { position: relative; padding-left: 16px; font-size: .87rem; color: rgba(45,45,45,.78); line-height: 1.5; margin-bottom: 6px; }
.sinom-area li::before { content: ''; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-mid); }
@media (max-width: 1080px) { .sinom-areas { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .sinom-areas { grid-template-columns: 1fr; } }

/* ============== DANTAN ============== */
.dantan-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); margin: 56px 0 0;
  border-top: 1px solid var(--gray-border); border-bottom: 1px solid var(--gray-border);
}
.dantan-stats > div { padding: 28px 20px; text-align: center; }
.dantan-stats > div + div { border-left: 1px solid var(--gray-border); }
.dantan-stats dt { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; color: var(--navy); line-height: 1.1; }
.dantan-stats dd { margin: 8px 0 0; font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-mid); }
.sub-steps--six { grid-template-columns: repeat(3, 1fr); }
.dantan-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px; }
.sinom-areas--five { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1080px) { .sinom-areas--five { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 920px) {
  .dantan-stats { grid-template-columns: 1fr 1fr; }
  .dantan-stats > div:nth-child(3) { border-left: 0; }
  .dantan-stats > div:nth-child(n+3) { border-top: 1px solid var(--gray-border); }
  .sub-steps--six, .dantan-gallery { grid-template-columns: 1fr; }
}
@media (max-width: 600px) { .sinom-areas--five { grid-template-columns: 1fr; } }

/* SINOM: tarjetas de portafolio con foto */
.sinom-area--photo { padding: 0; overflow: hidden; }
.sinom-area--photo .image-placeholder { border-radius: 0; min-height: 0; }
.sinom-area__body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }

/* Mapa de oficina */
.contact-map { margin-top: 28px; position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid rgba(255,255,255,.12); }
.contact-map iframe { display: block; width: 100%; height: 280px; border: 0; filter: grayscale(.35); }
@media (max-width: 600px) { .contact-map iframe { height: 300px; } }
.contact-map__tabs { display: flex; background: rgba(255,255,255,.06); border-bottom: 1px solid rgba(255,255,255,.12); }
.contact-map__tab {
  flex: 1; padding: 12px 16px; background: none; border: 0; cursor: pointer;
  font-family: var(--font-display); font-size: .8rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(255,255,255,.6); border-bottom: 2px solid transparent; transition: color .2s ease, border-color .2s ease;
}
.contact-map__tab:hover { color: var(--white); }
.contact-map__tab.is-active { color: var(--blue-light); border-bottom-color: var(--blue-light); }