body {
  font-family: 'Roboto', Arial, sans-serif;
  background-color: #f0f7f1;
  color: #234d20;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.topnav {
  background-color: #1e4d17;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.topnav a {
  flex: 1 0 auto;
  max-width: 120px;
  color: #d0e8c0;
  text-align: center;
  padding: 14px 10px;
  text-decoration: none;
  font-weight: 600;
  border-right: 1px solid #3f7d3f;
  box-sizing: border-box;
  transition: background-color 0.3s ease;
}

.topnav a:last-child {
  border-right: none;
}

.topnav a:hover, .topnav a.active {
  background-color: #a3cfa1;
  color: #0a2207;
}

.topnav .icon {
  display: none;
  font-size: 24px;
  cursor: pointer;
  color: #d0e8c0;
  padding: 14px 10px;
}

header {
  background: linear-gradient(90deg, #76b852 0%, #8dc26f 100%);
  color: white;
  text-align: center;
  padding: 40px 10px;
}

h1 {
  margin: 0;
  font-size: 2.8rem;
}

p {
  margin-top: 10px;
  font-size: 1.2rem;
}

main {
  display: flex;
  max-width: 1100px;
  margin: 20px auto;
  padding: 0 15px;
  gap: 25px;
  flex-wrap: wrap;
}

.content-section {
  flex: 2 1 600px;
  background: #e4f0db;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 12px rgba(70,120,30,0.15);
}

.info-box {
  margin-bottom: 20px;
}

.info-box h3 {
  color: #2a662a;
  margin-bottom: 10px;
}

.info-box ul {
  list-style-type: disc;
  padding-left: 20px;
  margin: 0 0 10px 0;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  background-color: #1e4d17;
  color: #d0e8c0;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 700;
  transition: background-color 0.3s ease;
  margin-top: 10px;
}

.btn:hover {
  background-color: #3f7d3f;
}

.sidebar {
  flex: 1 1 250px;
  background-color: #d4e9c3;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 0 8px rgba(80,130,40,0.1);
}

.sidebar h4 {
  color: #3a693a;
  margin-bottom: 15px;
}

.sidebar ul {
  list-style-type: none;
  padding-left: 0;
}

.sidebar ul li {
  margin-bottom: 10px;
}

.sidebar ul li a {
  color: #234d20;
  text-decoration: none;
  font-weight: 600;
}

.sidebar ul li a:hover {
  text-decoration: underline;
}

footer {
  background-color: #1e4d17;
  color: #d0e8c0;
  text-align: center;
  padding: 15px 10px;
  margin-top: 40px;
  font-size: 0.9rem;
}

footer a {
  color: #a3cfa1;
  text-decoration: none;
  margin: 0 8px;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  main {
    flex-direction: column;
  }
  .sidebar {
    order: 2;
    flex: none;
    width: 100%;
    margin-top: 20px;
  }
  .content-section {
    order: 1;
    flex: none;
    width: 100%;
  }
  .topnav a {
    max-width: 100%;
    border-right: none;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  p,
  .info-box p {
    font-size: 1rem;
  }
  .topnav a {
    padding: 12px 8px;
    font-size: 0.95rem;
  }
  .btn {
    width: 100%;
    text-align: center;
  }
  .topnav .icon {
    display: block;
  }
  .topnav.responsive a:not(:first-child) {
    display: none;
  }
  .topnav.responsive a.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a.active,
  .topnav.responsive a:hover {
    background-color: #a3cfa1;
    color: #0a2207;
    display: block;
    text-align: left;
    border: none;
  }
}