:root {
  color-scheme: dark;
  --text-primary: rgba(255, 255, 255, 0.96);
  --text-secondary: rgba(255, 255, 255, 0.78);
  --text-muted: rgba(255, 255, 255, 0.58);
  --line: rgba(255, 255, 255, 0.12);
  --panel: rgba(8, 13, 20, 0.46);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, sans-serif;
  color: var(--text-primary);
  background: #0a1018;
}

.backgrounds,
.bg-video,
.bg-overlay {
  position: fixed;
  inset: 0;
}

.backgrounds {
  z-index: -3;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(8, 14, 22, 0.95), rgba(10, 18, 29, 0.72)),
    radial-gradient(circle at top left, rgba(120, 164, 196, 0.35), transparent 38%);
}

.bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 1.2s ease, transform 10s ease;
}

.bg-video.is-visible {
  opacity: 1;
  transform: scale(1);
}

.bg-overlay {
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(5, 8, 12, 0.34) 0%, rgba(5, 8, 12, 0.12) 26%, rgba(5, 8, 12, 0.62) 100%),
    radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.08), transparent 20%);
}

a {
  color: inherit;
}

.page-shell {
  position: relative;
  z-index: 3;
  width: min(calc(100% - 40px), 980px);
  margin: 0 auto;
  padding: 28px 0 80px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.lang-label {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.72);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lang-select {
  min-height: 28px;
  padding: 0 28px 0 8px;
  border: 0;
  border-radius: 999px;
  background:
    linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.72) 50%) calc(100% - 12px) calc(50% - 2px) / 5px 5px no-repeat,
    linear-gradient(135deg, rgba(255, 255, 255, 0.72) 50%, transparent 50%) calc(100% - 8px) calc(50% - 2px) / 5px 5px no-repeat,
    transparent;
  color: var(--text-primary);
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  font: inherit;
  cursor: pointer;
}

.lang-select:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

.page-brand,
.page-back {
  text-decoration: none;
}

.page-brand {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-back {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.page-hero {
  margin-top: 84px;
  max-width: 760px;
}

.page-kicker {
  margin: 0 0 14px;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-hero h1 {
  margin: 0;
  font-family: Manrope, sans-serif;
  font-size: clamp(2.8rem, 8vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.page-subtitle {
  max-width: 54ch;
  margin: 18px 0 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.page-content {
  margin-top: 40px;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.page-content h2 {
  margin: 28px 0 12px;
  font-size: 1.2rem;
  line-height: 1.3;
}

.page-content h2:first-child {
  margin-top: 0;
}

.page-content p,
.page-content li {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.75;
}

.page-content ul {
  margin: 0;
  padding-left: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 10px;
}

.feature-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.page-footer {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.page-footer-nav {
  display: flex;
  gap: 18px;
}

.page-footer-nav a {
  text-decoration: none;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(calc(100% - 24px), 980px);
    padding-bottom: 48px;
  }

  .page-header,
  .page-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-hero {
    margin-top: 54px;
  }

  .page-content {
    padding: 22px 18px;
    border-radius: 22px;
  }

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