:root {
  --bg-body: #0f0f0f;
  --bg-card: #1a1a1a;
  --bg-hover: #252525;
  --border-card: #2a2a2a;
  --font-mono: 'Courier New', Courier, monospace;
  --text-heading: #ffffff;
  --text-body: #e0e0e0;
  --text-muted: #aaaaaa;
  --text-tagline: #888888;

  --accent-za: #2563eb; 
  --accent-pi: #7c3aed;
  --accent-wd: #ea580c;
}

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

body {
  font-family: var(--font-mono);
  background: var(--bg-body);
  color: var(--text-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
}

h1 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  color: var(--text-heading);
  text-align: center;
}

.tagline {
  color: var(--text-tagline);
  font-size: 1rem;
  margin-bottom: 40px;
  letter-spacing: 0.05em;
  text-align: center;
}

.card-container { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; max-width: 1060px; width: 100%; }

.card { 
  background: var(--bg-card); 
  border: 1px solid var(--border-card); 
  border-radius: 16px; 
  padding: 40px 30px; 
  text-align: center; 
  text-decoration: none; 
  color: inherit; 
  width: 100%; 
  max-width: 320px; 
  transition: all 0.2s ease; 
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card:hover { 
  background: var(--bg-hover);
  transform: translateY(-2px);
}

.card.za:hover { border-color: var(--accent-za); box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15); }
.card.pi:hover { border-color: var(--accent-pi); box-shadow: 0 8px 24px rgba(124, 58, 237, 0.15); }
.card.wd:hover { border-color: var(--accent-wd); box-shadow: 0 8px 24px rgba(234, 88, 12, 0.15); }

.card h2 { 
  margin-bottom: 15px; 
  font-size: 1.5rem; 
  letter-spacing: 0.08em;
}

.card.za h2 { color: var(--accent-za); }
.card.pi h2 { color: var(--accent-pi); }
.card.wd h2 { color: var(--accent-wd); }

.card p { 
  font-size: 0.9rem; 
  color: var(--text-muted); 
  margin: 0; 
  line-height: 1.6; 
}