:root {
  --bg-primary: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #2a2a4a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --text-accent: #6c8cff;
  --border: #2a2a3e;
}

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

html, body {
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

.landing-header {
  text-align: center;
  padding: 48px 24px 32px;
}

.landing-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
}

.landing-subtitle {
  margin-top: 8px;
  font-size: 16px;
  color: var(--text-secondary);
}

.version-grid {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.version-group {
  margin-bottom: 32px;
}

.version-group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  padding-left: 4px;
}

.version-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.version-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.version-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-accent);
  transform: translateY(-2px);
}

.version-card-model {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.version-card-body {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.version-card-year {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-accent);
  margin-top: 8px;
}

@media (max-width: 768px) {
  .landing-header {
    padding: 32px 16px 24px;
  }

  .landing-title {
    font-size: 24px;
  }

  .version-grid {
    padding: 0 16px 32px;
  }

  .version-cards {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 8px;
  }

  .version-card {
    padding: 12px;
  }

  .version-card-model {
    font-size: 15px;
  }
}