:root {
  --bg-primary: #080c14;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.88);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent: #00e5ff;
  --accent-glow: rgba(0, 229, 255, 0.18);
  --accent-secondary: #38bdf8;
  --border: rgba(255, 255, 255, 0.09);
  --card-border: rgba(0, 229, 255, 0.15);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

header {
  border-bottom: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.92);
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 0.72rem;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 2px 10px;
  border-radius: 9999px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 24px;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

nav a:hover, nav a.active {
  color: var(--accent);
}

main {
  flex: 1;
  padding: 44px 0 64px;
}

.hero {
  text-align: center;
  padding: 24px 0 44px;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #ffffff 0%, #00e5ff 60%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 640px;
  margin: 0 auto;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 28px;
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.4);
}

.card h2 {
  font-size: 1.35rem;
  margin-bottom: 16px;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card h3 {
  font-size: 1.1rem;
  margin: 22px 0 10px;
  color: #f1f5f9;
}

.card p, .card ul {
  color: #cbd5e1;
  margin-bottom: 14px;
  font-size: 0.96rem;
}

.card ul {
  padding-left: 24px;
}

.card li {
  margin-bottom: 8px;
}

.meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.lang-switch {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}

.lang-btn {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 8px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-btn:hover, .lang-btn.active {
  background: var(--accent);
  color: #080c14;
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

.contact-box {
  background: rgba(0, 229, 255, 0.05);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 12px;
  padding: 24px;
  margin-top: 24px;
  text-align: center;
}

.contact-box a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.contact-box a:hover {
  text-decoration: underline;
}

footer {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
  padding: 28px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
}

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