body {
      font-family: 'Titillium Web', sans-serif;
      margin: 0;
      padding: 0;
      background-color: #f7f8fa;
      color: #333;
    }

    .hero-header {
      position: relative;
      height: 400px;
      background: url('../images/48c7a01a-d485-4499-be06-ac0acd510195.jpg') center top / cover no-repeat;
      display: flex;
      align-items: flex-end; /* text comes at the bottom */
    }

    .hero-overlay {
      width: 100%;
      padding: 2rem;
      background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent 80%);
      /* Only applies to bottom 20% roughly */
    }

    .hero-texts {
      color: #fff;
      text-align: left;
      max-width: 1000px;
      margin: 0 auto;
    }

    .hero-texts h1 {
      font-size: 2.5rem;
      margin-bottom: 0.5rem;
    }

    .hero-texts p {
      font-size: 1.2rem;
      color: #f1f1f1;
    }

    main {
      max-width: 1200px;
      margin: auto;
      padding: 2rem 1rem;
    }

    .publication-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
    }

    /* Card styles */
    .publication {
      position: relative;
      overflow: hidden;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      cursor: pointer;
      transition: transform 0.3s ease;
    }

    .publication:hover {
      transform: translateY(-5px);
    }

    /* Cover image */
    .publication img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .publication:hover img {
      transform: scale(1.1);
    }

    /* Overlay */
    .overlay {
      position: absolute;
      inset: 0;
      background: rgba(0, 64, 128, 0.8);
      color: #fff;
      opacity: 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 1.5rem;
      text-align: center;
      transition: opacity 0.4s ease;
    }

    .publication:hover .overlay {
      opacity: 1;
    }

    .overlay h3 {
      font-size: 1.2rem;
      margin-bottom: 0.5rem;
      font-weight: 600;
    }

    .overlay .meta {
      font-size: 0.85rem;
      margin-bottom: 1rem;
      opacity: 0.9;
    }

    .overlay p {
      font-size: 0.95rem;
      line-height: 1.4;
      margin-bottom: 1rem;
    }

    .btn-download {
      display: inline-block;
      padding: 0.5rem 1rem;
      background-color: #ffffff;
      color: #004d40;
      text-decoration: none;
      border-radius: 4px;
      font-size: 0.9rem;
      font-weight: 600;
      transition: background 0.3s ease, color 0.3s ease;
    }

    .btn-download:hover {
      background-color: #003366; /* A deeper navy blue */
      color: #fff;
    }