:root {
  --bg: #ffffff;
  --ink: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
  --border: #e5e7eb;
}

/* Reset básico */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: white;
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  height: 42px;
}

/* Nav */
.nav a {
  margin-left: 24px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
}

/* Buttons */
.btn {
  padding: 10px 18px;
  border-radius: 6px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 500;
}

.btn.primary {
  background: var(--accent);
  color: white;
  border-color: transparent;
}

.btn.secondary {
  background: transparent;
}

/* Hero */
.hero {
  padding: 56px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: 48px;
  line-height: 1.1;
  margin: 0 0 24px;
}

.hero p {
  color: var(--muted);
  max-width: 520px;
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  gap: 16px;
}

/* Imagen oscura como contraste */
.hero-media img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.25);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 36px;
  }
}

/* Sections */
.section {
  padding: 56px 0;
}

.section-light {
  background: #ffffff;
}

.section-gray {
  background: #f8fafc;
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.section h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}

.section p.lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 520px;
}

/* Cards */
.cards {
  display: grid;
  gap: 20px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  background: #ffffff;
}

.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--ink);
}

.card p {
  font-size: 15px;
  color: var(--muted);
}

/* Responsive sections */
@media (max-width: 900px) {
  .section-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 20px;
  margin-top: 120px;
  background: #fafafa;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-logo {
  height: 36px;
  margin-bottom: 16px;
}

.footer-desc {
  color: var(--muted);
  font-size: 14px;
}

.footer h4 {
  margin-bottom: 12px;
  font-size: 15px;
}

.footer a {
  color: var(--ink);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer ul li {
  margin-bottom: 8px;
}

.footer-bottom {
  margin-top: 48px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

/* Responsive footer */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.solutions-image {
  margin-top: 40px;
}

.solutions-image img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.25);
}

@media (max-width: 900px) {
  .solutions-image {
    text-align: center;
  }

  .solutions-image img {
    max-width: 100%;
  }
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}

.lang-switch .lang {
  text-decoration: none;
  color: #000;
}

.lang-switch .lang.active {
  color: #fff;
  font-weight: 600;
}

/* =========================
   Header responsive (mobile)
   ========================= */

@media (max-width: 900px) {

  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
    gap: 12px;
  }

  .logo {
    height: 36px;
  }

  .nav {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .nav a {
    margin-left: 0;
  }
  
  .lang-switch {
    margin-left: auto;
    font-size: 0.8rem;
  }
}

/* ================= Fiber Electronics (Banner + Panel) ================= */

/* Mobile banner (visible por defecto) */
.fe-mobile-banner{
  display: block;
  margin: 10px auto 0;
  width: min(1200px, calc(100% - 40px)); /* coincide con container padding */
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(15,23,42,.08);
  background: linear-gradient(90deg, rgba(37,99,235,.10), rgba(2,132,199,.06), rgba(255,255,255,.70));
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15,23,42,.06);
}

.fe-mobile-banner__top{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-weight: 700;
  letter-spacing: .1px;
  line-height: 1.2;
}

.fe-mobile-banner__title{ font-size: 13px; }
.fe-mobile-banner__subtitle{ 
  font-size: 12px;
  font-weight: 600; 
  opacity: .9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 72ch;
}
.fe-mobile-banner__sep{ opacity: .35; font-weight: 800; }
.fe-mobile-banner__chev{ margin-left: auto; font-size: 16px; opacity: .7; }

.fe-mobile-banner__ticker{
  border-top: 1px solid rgba(15,23,42,.06);
  padding: 8px 0;
}

.fe-ticker-track{
  display: flex;
  width: 200%;
  animation: fe-marquee 18s linear infinite;
}

.fe-icon-row{
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 14px;
  width: 100%;
}

.fe-icon-chip{
  font-size: 12px;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.75);
  white-space: nowrap;
}

.fe-icon-photo{
  width: 56px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.80);
  overflow: hidden;
}

.fe-icon-photo img{
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

@keyframes fe-marquee{
  0%{ transform: translateX(0); }
  100%{ transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce){
  .fe-ticker-track{ animation: none; }
}