* {
      box-sizing: border-box;
      font-family: 'Inter', sans-serif;
    }
    :root {
      --danger-color: red;
    }
    body {
      background-color: #f8fafc;
      color: #333;
      line-height: 1.6;
    }
    nav {
      background-color: #0284c7;
      color: white;
      padding: 1rem;
      text-align: center;
      font-size: 1.2rem;
      font-weight: 600;
      position: sticky;
      top: 0;
      z-index: 999;
      transition: all 0.3s ease;
    }
    nav.shrink {
      padding: 0.5rem 1rem;
      font-size: 1rem;
      border-radius: 0 0 8px 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    .container {
      max-width: 1100px;
      margin: auto;
      padding: 40px 20px;
    }
    h1 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 20px;
      color: #0f172a;
      text-align: center;
    }
    h2 {
      font-size: 22px;
      margin-top: 40px;
      margin-bottom: 20px;
      color: #1e293b;
    }
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }
    .card {
      background: #ffffff;
      border-left: 6px solid #22c55e;
      border-radius: 12px;
      padding: 20px;
      box-shadow: 0 6px 12px rgba(0,0,0,0.05);
      opacity: 0;
      transform: translateY(40px);
      animation: fadeInUp 0.5s ease forwards;
    }
    .card:nth-child(even) {
      border-left-color: #f97316;
    }
    .card h3 {
      font-size: 18px;
      color: #0f172a;
      margin-bottom: 10px;
    }
    .card p {
      font-size: 15px;
      color: #475569;
    }
    @keyframes fadeInUp {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .warning-box, .reminder-box {
      background-color: #fff;
      padding: 20px 24px;
      border-radius: 12px;
      margin-top: 40px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
      font-size: 15px;
    }
    .warning-box {
      border-left: 6px solid #ef4444;
      background-color: #fef2f2;
    }
    .reminder-box {
      border-left: 6px solid #84cc16;
      background-color: #f7fee7;
    }
    .note {
      margin-top: 40px;
      text-align: center;
      font-weight: 600;
    }
    footer {
      background-color: #0f172a;
      color: white;
      text-align: center;
      padding: 20px;
      margin-top: 60px;
    }
    footer a {
      color: #60a5fa;
      text-decoration: none;
    }
    p.warning {
      color: var(--danger-color);
      text-align: center;
      font-size: 1rem;
      margin-bottom: 2rem;
    }
    .new-rule {
    border: 2px solid #ff9800;
    background-color: #fff8e1;
    position: relative;
    box-shadow: 0 0 10px rgba(255, 152, 0, 0.3);
  }

  .new-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: #ff9800;
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  }