:root {
  --bg: #0b0f1a;
  --fg: #eaeaf0;
  --accent: #4da3ff;
  --muted: #9aa4bf;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

header {
  padding: 3rem 1rem;
  text-align: center;
  background: radial-gradient(circle at top, #11183a, #0b0f1a);
}

header h1 {
  font-size: 2.5rem;
}

header p {
  color: var(--muted);
}

.lang-switch button {
  margin: 0.5rem;
  background: none;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.3rem 0.8rem;
  cursor: pointer;
}

nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1rem;
  border-bottom: 1px solid #1f2a44;
}

nav a {
  color: var(--fg);
  text-decoration: none;
}

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

.container {
  max-width: 900px;
  margin: auto;
  padding: 2.5rem 1rem;
}

h2 {
  margin-bottom: 1rem;
  color: var(--accent);
}

ul {
  padding-left: 1.5rem;
}

footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  border-top: 1px solid #1f2a44;
}