/* Dark Mode, Ultra-Clean, Institutional */
:root {
  --bg-color: #0d0f12;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --card-bg: #1e222a;
  --card-border: #334155;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  max-width: 900px;
  width: 100%;
  padding: 40px 20px;
}

header {
  margin-bottom: 60px;
  text-align: center;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 400;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 30px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: center;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 15px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 30px;
  border-radius: 8px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.card h3 {
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--text-main);
  font-weight: 500;
}