h1 {
      font-family: 'Arial Black', sans-serif;
      font-size: 2.2rem;
      color: #d32f2f;
      text-align: center;
      margin: 30px 0 20px;
      line-height: 1.1;
    }

    .article {
      background: white;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
      margin-bottom: 30px;
    }

    h2 {
      color: #1976d2;
      margin-top: 30px;
      font-size: 1.6rem;
    }

    p {
      margin-bottom: 1.4em;
      font-size: 1.05rem;
    }

    .highlight {
      font-weight: bold;
      color: #c62828;
    }

    .tips-box {
      background: #e8f5e9;
      padding: 20px;
      border-radius: 0px;
      margin: 25px 0;
      border-left: 4px solid #2e7d32;
    }

    ul, ol {
      padding-left: 20px;
      margin: 15px 0;
    }

    li {
      margin-bottom: 8px;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      margin: 25px 0;
      background: white;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
      border-radius: 8px;
      overflow: hidden;
    }

    th, td {
      padding: 12px;
      text-align: left;
      border-bottom: 1px solid #eee;
    }

    th {
      background-color: #bbdefb;
      color: #0d47a1;
    }

    tr:last-child td {
      border-bottom: none;
    }

    @media (max-width: 768px) {
      h1 { font-size: 1.8rem; }
      p { font-size: 1rem; }
      h2 { font-size: 1.4rem; }
      th, td { padding: 8px 6px; font-size: 0.9rem; }
    }
.study-card {
      background: white;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
      margin-bottom: 30px;
    }

    .section-title {
      font-family: 'Arial', sans-serif;
      font-weight: bold;
      color: #1976d2;
      margin-top: 25px;
      margin-bottom: 10px;
      font-size: 1.3rem;
    }