.dropdown-container {
      max-width: 1000px;
      margin: auto;
      border-radius: 12px;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      background-color: #fff;
    }

    .dropdown-header {
      background-color: #0a3d62;
      color: #fff;
      padding: 16px 24px;
      font-size: 20px;
      font-weight: bold;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .arrow {
      transition: transform 0.3s ease;
    }

    .rotate {
      transform: rotate(180deg);
    }

    .dropdown-content {
      display: none;
      animation: fadeIn 0.3s ease-in-out;
    }

    .card {
      padding: 16px 24px;
      border-top: 1px solid #eee;
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      flex-wrap: wrap;
    }

    .card:hover {
      background-color: #f9f9f9;
    }

    .card .info {
      flex: 1;
    }

    .card-title {
      font-size: 17px;
      font-weight: 600;
      color: #0a3d62;
    }

    .card-sub {
      font-size: 14px;
      color: #444;
      margin: 4px 0;
    }

    .card-year {
      font-size: 13px;
      color: #888;
    }

    .card a {
      text-decoration: none;
      background-color: #0a3d62;
      color: white;
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 13px;
      transition: background 0.3s;
      margin-top: 8px;
      display: inline-block;
    }

    .card a:hover {
      background-color: #074d94;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(-8px); }
      to { opacity: 1; transform: translateY(0); }
    }






.archive-section {
      max-width: 1000px;
      margin: auto;
      padding: 20px;
    }

    .archive-title {
      font-size: 30px;
      font-weight: bold;
      color: #0a3d62;
      text-align: center;
      margin-bottom: 35px;
    }

    .archive-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    .archive-card {
      background: #ffffff;
      padding: 20px 25px;
      border-left: 5px solid #0a3d62;
      border-radius: 10px;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.06);
      transition: all 0.3s ease;
      position: relative;
    }

    .archive-card a {
      text-decoration: none;
      color: #0a3d62;
      font-weight: 600;
      font-size: 17px;
      display: block;
    }

    .archive-card:hover {
      background: linear-gradient(145deg, #e3f0ff, #ffffff);
      transform: translateY(-4px);
      border-left-color: #007acc;
      box-shadow: 0 10px 16px rgba(0, 0, 0, 0.1);
    }

    .archive-card::after {
      content: "📂";
      position: absolute;
      top: 18px;
      right: 20px;
      font-size: 20px;
      opacity: 0.3;
      transition: 0.3s ease;
    }

    .archive-card:hover::after {
      opacity: 0.6;
    }