body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
  }
  
  .hero-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 60px;
    background: linear-gradient(to bottom, #249608, #6fc46f);
    color: white;
  }
  
  .hero-content {
    max-width: 50%;
  }
  
  .hero-content h1 {
    font-size: 3em;
    margin-bottom: 20px;
    font-weight: bold;
  }
  
  .hero-content p {
    font-size: 1.2em;
    margin-bottom: 30px;
  }
  
  .cta-button {
    background-color: #0c7c59;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: background-color 0.3s ease;
  }
  
  .cta-button:hover {
    background-color: #07553d;
  }
  
  .hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  }
/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    z-index: 1000;
  }
  
  .navbar-container {
    max-width: 1200px;
    margin: auto;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .navbar .logo {
    display: flex;
    align-items: center;
  }
  
  .logo-img {
    height: 50px;
    object-fit: contain;
  }
  
  .nav-links {
    list-style: none;
    display: flex;
    gap: 40px;
    margin: 0 auto;
  }
  
  .nav-links li a {
    text-decoration: none;
    color: #357a15;
    font-weight: 700;
    font-size: 16px;
    font-style:inherit;
  }
  
  .nav-links li a:hover {
    color: #0c7c59;
  }
  
  /* Fix layout under navbar */
  body {
    padding-top: 80px;
    font-family: Arial, sans-serif;
    color: #333;
  }
  
  /* Sections */
  .section {
    padding: 60px 20px;
    max-width: 1000px;
    margin: auto;
  }
  
  .section h2 {
    margin-bottom: 20px;
    color: #0c7c59;
    font-size: 28px;
    border-bottom: 2px solid #56ab2f;
    padding-bottom: 10px;
    text-align: center;
  }
  
  .section ul {
    list-style: none;
    padding: 0;
    margin: 20px auto;
    max-width: 800px;
  }
  
  .section ul li {
    background-color: #f6fdf7;
    margin-bottom: 10px;
    padding: 12px 18px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s ease;
    text-align: center;
  }
  
  .section ul li:hover {
    background-color: #e8f8ed;
  }
  
  /* PDF file list */
  .section ul li a {
    color: #2e7d32;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    display: block;
  }
  
  .section ul li a:hover {
    color: #1b5e20;
    text-decoration: underline;
  }
  
  /* Table */
  table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
  }
  
  table, th, td {
    border: 1px solid #ccc;
  }
  
  th, td {
    padding: 10px;
    text-align: left;
  }
  
  /* Footer */
  footer {
    background-color: #f0f4f3;
    padding: 40px 20px;
    text-align: center;
    color: #333;
    margin-top: 60px;
    border-top: 1px solid #ddd;
  }
  
  footer h3 {
    color: #0c7c59;
    margin-bottom: 10px;
  }
  
  footer p {
    margin: 5px 0;
  }
  
  footer input[type="text"] {
    padding: 8px;
    margin-right: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
  }
  
  footer input[type="submit"] {
    padding: 8px 16px;
    background-color: #56ab2f;
    border: none;
    color: white;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
  }
  
  footer input[type="submit"]:hover {
    background-color: #0c7c59;
  }
  
  input[type="text"],
input[type="tel"],
input[type="email"] {
  padding: 12px 16px;         /* tăng khoảng cách bên trong */
  font-size: 16px;            /* tăng cỡ chữ */
  border-radius: 5px;
  border: 1px solid #ccc;
  width: 200px;               /* có thể chỉnh độ rộng tùy ý */
  margin: 5px;
}