body {
      font-family: 'Open Sans', sans-serif;
      background: #f9fafb;
      color: #2c3e50;
    }

    .navbar {
      box-shadow: 0 2px 24px rgba(33, 82, 61, 0.07);
    }

    .navbar-brand {
      font-family: 'Quicksand', sans-serif;
      font-weight: 700;
      color: #21523d;
      letter-spacing: 1px;
    }

    .header-bg {
      background: linear-gradient(rgba(28, 40, 52, 0.7), rgba(39, 91, 73, 0.5)),
        url('img/blog-hero.jpg') center center/cover no-repeat;
      border-bottom-left-radius: 32px;
      border-bottom-right-radius: 32px;
      padding: 5rem 0 3rem 0;
      margin-bottom: 2rem;
    }

    .header-bg h1 {
      font-family: 'Quicksand', sans-serif;
      font-weight: 700;
      letter-spacing: 2px;
      color: #fff;
    }

    .header-bg p,
    .breadcrumb a {
      color: #ddd;
    }

    .breadcrumb .active {
      color: #4cb87d;
    }

    .card-blog {
      border: none;
      border-radius: 18px;
      box-shadow: 0 8px 28px rgba(44, 62, 80, 0.1);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .card-blog:hover {
      transform: translateY(-6px);
      box-shadow: 0 16px 40px rgba(44, 92, 80, 0.16);
    }

    .card-blog .card-img-top {
      border-radius: 18px 18px 0 0;
      height: 200px;
      object-fit: cover;
    }

    .card-blog .card-title {
      font-family: 'Quicksand', sans-serif;
      font-weight: 700;
      color: #21523d;
      margin-bottom: 0.7rem;
    }

    .card-blog .card-text {
      color: #555;
      font-size: 0.95rem;
      margin-bottom: 1.2rem;
      min-height: 75px; /* keep cards uniform */
    }

    .btn-outline-primary {
      font-weight: 600;
      border-radius: 8px;
      padding: 0.4rem 1rem;
      transition: background-color 0.2s, color 0.2s;
    }

    .btn-outline-primary:hover {
      background-color: #237361;
      color: white;
      border-color: #237361;
    }

    .footer {
      background: #232529;
      color: #ccc;
      border-top: 3px solid #237361;
      padding: 45px 0;
    }

    .footer .logo {
      width: 110px;
      margin-bottom: 10px;
    }

    .btn-social {
      color: #fff;
      border-radius: 50%;
      border: 1px solid #4cb87d;
      background: #237361;
      margin-right: 8px;
      width: 38px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .btn-social:hover {
      background: #4cb87d;
    }

    .back-to-top {
      position: fixed;
      bottom: 32px;
      right: 32px;
      z-index: 999;
    }

    @media (max-width: 768px) {
      .card-blog .card-img-top {
        height: 150px;
      }
    }