:root {
  --bg: #0b0f19;
  --text: #e6e6e6;
  --muted: #b3b3b3;
  --card: #141a2a;
  --accent: #4f9cff;
  --footer: #777;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f7fb;
    --text: #111827;
    --muted: #4b5563;
    --card: #ffffff;
    --accent: #2563eb;
    --footer: #6b7280;
  }
}

body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

.hero {
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.subtitle {
  color: var(--muted);
  font-size: 1.1rem;
}

.section {
  margin-top: 40px;
}

.section h2 {
  margin-bottom: 15px;
  border-left: 4px solid var(--accent);
  padding-left: 10px;
}

.card {
  background: var(--card);
  padding: 15px 20px;
  margin-bottom: 15px;
  border-radius: 10px;
  transition: all 0.2s ease;
  border: 1px solid rgba(0, 0, 0, 0);
}

.card:hover {
  transform: translateY(-2px);
  border: 1px solid var(--accent);
}

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

a:hover {
  text-decoration: underline;
}

.footer {
  margin-top: 60px;
  font-size: 0.9rem;
  color: var(--footer);
  text-align: center;
}

.hero-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.hero-links a {
  text-decoration: none;
  color: var(--text);
  background-color: var(--card);
  border: 1px solid rgba(128, 128, 128, 0.2);
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 25px;
  transition: all 0.2s ease;
}

.hero-links a:hover {
  background-color: var(--accent);
  color: #fff;
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-2px);
}