:root {
  --bg: #07131f;
  --bg-soft: #0b1d2e;
  --panel: #0d2236;
  --panel-soft: #102940;
  --line: rgba(89, 211, 255, .24);
  --text: #eff9ff;
  --muted: #adc4d5;
  --cyan: #45dcff;
  --green: #36e985;
  --orange: #ffba55;
  --shadow: 0 18px 48px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -10%, rgba(69, 220, 255, .14), transparent 31rem),
    linear-gradient(180deg, #06101a, var(--bg));
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(69, 220, 255, .16);
  background: rgba(6, 16, 26, .94);
  backdrop-filter: blur(14px);
}
.nav-shell {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.brand {
  flex: 0 0 auto;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 900;
}
.brand span {
  display: block;
  color: var(--cyan);
  font-size: .72rem;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-left: auto;
}
.site-nav a,
.language-nav a {
  padding: 9px 11px;
  border-radius: 10px;
  color: #c9deeb;
  font-size: .92rem;
  font-weight: 700;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a[aria-current="page"],
.language-nav a:hover,
.language-nav a[aria-current="page"] {
  color: #04131d;
  background: var(--cyan);
}
.language-nav {
  display: flex;
  gap: 4px;
  padding-left: 12px;
  border-left: 1px solid rgba(255,255,255,.14);
}

.page-hero { padding: 58px 0 32px; }
.page-hero.home { padding-top: 38px; }
.home-grid,
.split-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 26px;
  align-items: center;
}
.hero-logo,
.feature-image {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.hero-logo { background: #fff; }
.eyebrow {
  margin: 0 0 9px;
  color: var(--cyan);
  font-size: .8rem;
  font-weight: 900;
  letter-spacing: 1.35px;
  text-transform: uppercase;
}
h1, h2, h3 { margin: 0 0 14px; line-height: 1.13; }
h1 { font-size: clamp(2.35rem, 5vw, 4.4rem); }
h2 { font-size: clamp(1.65rem, 3vw, 2.55rem); }
h3 { font-size: 1.16rem; }
.lead,
.subtext,
.card p,
.page-intro { color: var(--muted); }
.lead { max-width: 760px; font-size: 1.08rem; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 11px 17px;
  border: 1px solid rgba(237, 249, 255, .22);
  border-radius: 12px;
  font-weight: 800;
  transition: transform .16s ease, border-color .16s ease;
}
.btn:hover { transform: translateY(-2px); border-color: var(--cyan); }
.btn.primary {
  border-color: transparent;
  color: #04131d;
  background: linear-gradient(135deg, var(--cyan), #73e9ff);
}

.section { padding: 42px 0; }
.section.compact { padding: 25px 0; }
.section.tint {
  border-top: 1px solid rgba(69, 220, 255, .09);
  border-bottom: 1px solid rgba(69, 220, 255, .09);
  background: rgba(4, 13, 22, .46);
}
.section-head { max-width: 780px; margin-bottom: 24px; }
.section-head.center { margin-inline: auto; text-align: center; }

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(14, 36, 57, .96), rgba(8, 24, 39, .96));
  box-shadow: var(--shadow);
}
.card h3 { color: var(--cyan); }
.card-link {
  display: block;
  transition: transform .16s ease, border-color .16s ease;
}
.card-link:hover { transform: translateY(-4px); border-color: rgba(69, 220, 255, .62); }
.card-link .more { color: var(--cyan); font-weight: 800; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.update-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 22px 24px;
  border-color: rgba(69, 220, 255, .4);
}
.update-strip h2 { font-size: clamp(1.35rem, 2.5vw, 2rem); }
.tag-row, .status-list, .model-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.tag, .status, .model-list span, .product-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 11px;
  border: 1px solid rgba(69, 220, 255, .28);
  border-radius: 999px;
  color: #dff8ff;
  background: rgba(69, 220, 255, .1);
  font-size: .88rem;
  font-weight: 800;
}
.status.ok, .product-tag {
  color: #a9ffc9;
  border-color: rgba(54, 233, 133, .42);
  background: rgba(54, 233, 133, .13);
}
.status.pending {
  color: #ffd79d;
  border-color: rgba(255, 186, 85, .42);
  background: rgba(255, 186, 85, .13);
}
.status.info {
  color: #b5efff;
  border-color: rgba(69, 220, 255, .38);
  background: rgba(69, 220, 255, .11);
}

.product-card { position: relative; }
.product-card.featured {
  border-color: rgba(54, 233, 133, .7);
  box-shadow: 0 0 0 1px rgba(54, 233, 133, .15), 0 20px 52px rgba(2, 90, 42, .26);
}
.product-card h2 { margin-top: 15px; font-size: 1.45rem; }
.check-list {
  list-style: none;
  padding: 0;
  margin: 17px 0 0;
}
.check-list li {
  position: relative;
  margin: 0 0 9px;
  padding-left: 24px;
  color: #dceef8;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 900;
}

.prosistel-panel {
  border-color: rgba(255, 186, 85, .42);
  background:
    radial-gradient(circle at 0 0, rgba(255, 186, 85, .11), transparent 22rem),
    linear-gradient(180deg, rgba(14, 36, 57, .96), rgba(8, 24, 39, .96));
}
.voltage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}
.voltage-card {
  padding: 20px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 16px;
  background: rgba(3, 13, 22, .45);
}
.voltage-card h3 { margin-top: 11px; }
.notice {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px dashed rgba(255, 186, 85, .46);
  border-radius: 14px;
  color: #ffe4bb;
  background: rgba(255, 186, 85, .08);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.gallery-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}
.gallery-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.gallery-card span {
  display: block;
  padding: 11px 13px;
  color: #dff3ff;
  font-weight: 700;
}

.version-list { display: grid; gap: 12px; }
.version-row {
  display: grid;
  grid-template-columns: 90px 190px 1fr;
  gap: 15px;
  padding: 16px 18px;
  border: 1px solid rgba(69, 220, 255, .16);
  border-radius: 14px;
  background: rgba(8, 25, 41, .66);
}
.version-row strong { color: var(--green); }
.version-row span { color: var(--muted); }

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.cta-card p { margin-bottom: 0; }

.site-footer {
  padding: 30px 0 84px;
  border-top: 1px solid rgba(69, 220, 255, .12);
  color: #94adbd;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 15px; }

.whatsapp-float {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 10px 17px;
  border: 1px solid rgba(255,255,255,.32);
  border-radius: 999px;
  color: #042816;
  background: #25d366;
  box-shadow: 0 14px 36px rgba(0,0,0,.34);
  font-weight: 900;
}

@media (max-width: 980px) {
  .nav-shell { flex-wrap: wrap; gap: 8px 16px; padding: 10px 0; }
  .site-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 3px;
  }
  .language-nav { margin-left: auto; }
  .home-grid, .split-grid { grid-template-columns: 1fr; }
  .card-grid.four, .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .page-hero { padding-top: 38px; }
  .card-grid, .card-grid.two, .card-grid.four, .voltage-grid, .gallery-grid {
    grid-template-columns: 1fr;
  }
  .update-strip, .version-row { grid-template-columns: 1fr; }
  .cta-card, .footer-inner { align-items: flex-start; flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .gallery-card img { height: auto; }
  .site-nav a { padding-inline: 9px; }
  .whatsapp-float { right: 11px; bottom: 11px; }
}