:root {
  --primary: #111;
  --accent: #c62828;
  --bg: #f5f5f5;
  }
  
  
  * {
  box-sizing: border-box;
  }
  
  
  body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: #222;
  }
  
  
  .header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: #fff;
  border-bottom: 1px solid #ddd;
  }
  
  
  .logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  }
  
  
  .nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  padding: 0.75rem;
  background: var(--primary);
  }
  
  
  .nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  }
  
  
  .nav a.active {
  color: var(--accent);
  }
  
  
  .container {
  padding: 1rem;
  max-width: 1000px;
  margin: auto;
  }
  
  
  .card {
  background: #fff;
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
  }
  
  
  table {
  width: 100%;
  border-collapse: collapse;
  }
  
  
  th, td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #eee;
  }
  
  
  th {
  background: #fafafa;
  }