:root {
  --bg: #080b17;
  --bg-soft: #11172b;
  --text: #f3f7ff;
  --text-muted: #b7c3de;
  --accent-blue: #3a9dff;
  --accent-green: #35f3c6;
  --border: rgba(139, 169, 228, 0.22);
  --card-shadow: 0 16px 36px rgba(0, 8, 24, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 10% 5%, rgba(58, 157, 255, 0.2), transparent 28%),
    radial-gradient(circle at 90% 0, rgba(53, 243, 198, 0.16), transparent 30%), var(--bg);
  line-height: 1.6;
  position: relative;
}

.background-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 80% 75%, rgba(58, 157, 255, 0.14), transparent 36%),
    radial-gradient(circle at 20% 95%, rgba(53, 243, 198, 0.12), transparent 36%);
}

.container {
  width: min(1060px, 92%);
  margin: 0 auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 4;
  backdrop-filter: blur(8px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 0 26px rgba(58, 157, 255, 0.45);
}

.brand-name {
  letter-spacing: 0.4px;
}

.language-switcher {
  display: inline-flex;
  gap: 0.4rem;
  padding: 0.25rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(8, 11, 23, 0.75);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.lang-btn.is-active {
  color: var(--text);
  background: linear-gradient(120deg, rgba(58, 157, 255, 0.33), rgba(53, 243, 198, 0.3));
}

.section {
  padding: 2.2rem 0;
}

.hero {
  padding-top: 4.2rem;
  padding-bottom: 2.7rem;
}

.eyebrow {
  color: var(--accent-green);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
  font-size: 0.84rem;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  max-width: 12ch;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.3rem, 2.8vw, 2rem);
  margin-bottom: 0.65rem;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.section-copy {
  color: var(--text-muted);
  max-width: 65ch;
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.35rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 0.9rem;
  padding: 0.75rem 1.1rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #07111f;
  background: linear-gradient(120deg, var(--accent-blue), var(--accent-green));
  box-shadow: 0 14px 26px rgba(57, 172, 236, 0.35);
}

.button.secondary {
  color: var(--text);
  border: 1px solid var(--border);
  background: rgba(16, 28, 52, 0.5);
}

.card-block,
.card {
  background: linear-gradient(160deg, rgba(16, 22, 40, 0.92), rgba(12, 18, 34, 0.88));
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
}

.card-block {
  padding: 1.4rem;
}

.card-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.95rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1.15rem;
}

.card p {
  color: var(--text-muted);
  margin: 0;
}

.site-footer {
  padding: 2rem 0 2.2rem;
  color: var(--text-muted);
}

@media (max-width: 820px) {
  .site-header {
    flex-direction: column;
    gap: 0.85rem;
    align-items: flex-start;
  }

  .hero {
    padding-top: 2.8rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}