:root {
  --bg: #081019;
  --bg-soft: #0d1724;
  --card: #101c2b;
  --card-border: rgba(255,255,255,0.08);
  --text: #f4f7fb;
  --muted: #a7b4c5;
  --accent: #00A7C6;
  --accent-soft: rgba(0, 167, 198, 0.14);
  --success: #1fbf75;
  --max-width: 1180px;
  --radius: 24px;
  --shadow: 0 20px 60px rgba(0,0,0,0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(0,167,198,0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(255,255,255,0.04), transparent 20%),
    var(--bg);
  color: var(--text);
}

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

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

.container {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(8, 16, 25, 0.75);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), #0c7f95);
  color: white;
  font-weight: 800;
  box-shadow: 0 10px 30px rgba(0,167,198,0.35);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--text);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-switch a {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  border: 1px solid rgba(255,255,255,0.05);
  font-size: 0.9rem;
}

.lang-switch a.active {
  background: var(--accent-soft);
  color: var(--text);
  border-color: rgba(0,167,198,0.3);
}

.hero {
  padding: 88px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
}

.hero-card,
.side-card,
.section-card,
.product-card,
.contact-card,
.footer-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 48px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.82rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.3rem);
  line-height: 0.95;
  margin: 0 0 18px;
}

.hero p.lead {
  font-size: 1.18rem;
  line-height: 1.7;
  color: var(--muted);
  margin: 0 0 28px;
  max-width: 760px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #061018;
}

.btn-secondary {
  background: rgba(255,255,255,0.04);
  color: var(--text);
  border-color: rgba(255,255,255,0.08);
}

.side-stack {
  display: grid;
  gap: 20px;
}

.side-card {
  padding: 28px;
}

.side-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.side-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

main section {
  padding: 18px 0 0;
}

.section-header {
  margin-bottom: 18px;
}

.section-header h2 {
  font-size: 2rem;
  margin: 0 0 10px;
}

.section-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  max-width: 760px;
}

.section-card {
  padding: 32px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  padding: 26px;
}

.product-card h3 {
  margin: 0 0 10px;
}

.product-card p {
  color: var(--muted);
  line-height: 1.65;
  margin: 0 0 18px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.tag {
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  border: 1px solid rgba(255,255,255,0.05);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
}

.contact-card {
  padding: 28px;
}

.contact-card h3 {
  margin-top: 0;
}

.contact-card p,
.contact-card li {
  color: var(--muted);
  line-height: 1.65;
}

.form-group {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

label {
  font-size: 0.95rem;
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  border-radius: 14px;
  padding: 14px 16px;
  font: inherit;
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.form-note,
.form-status {
  font-size: 0.92rem;
  color: var(--muted);
}

.form-status.success {
  color: var(--success);
}

.footer {
  padding: 36px 0 56px;
}

.footer-card {
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.small {
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .contact-layout,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .topbar-inner {
    align-items: flex-start;
    padding: 16px 0;
    flex-direction: column;
  }

  .hero-card,
  .side-card,
  .section-card,
  .product-card,
  .contact-card,
  .footer-card {
    padding: 22px;
  }
}