{
  font-family: 'Open Sans', sans-serif;
  line-height: 1.7;
  color: #4a4a4a;
  background-color: #f8f9fa;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

a {
  color: #007bff;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  text-decoration: none;
  color: #0056b3;
}

header {
  background-color: #e9ecef;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #ced4da;
}

.logo img {
  max-width: 180px;
  height: auto;
}

nav {
  display: flex;
  align-items: center;
}

nav a {
  padding: 8px 20px;
  font-weight: 500;
  color: #495057;
  border-radius: 5px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

nav a:hover {
  background-color: #dee2e6;
  color: #212529;
}

main {
  padding: 50px;
  background-color: #fff;
  max-width: 1024px;
  margin: 20px auto;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
  border-radius: 8px;
}

article {
  margin-bottom: 40px;
  border-bottom: 1px solid #e0e0e0;
  padding-bottom: 40px;
}

article:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

h1 {
  font-size: 32px;
  margin-bottom: 15px;
  color: #2c3e50;
  font-weight: 600;
}

p {
  margin-bottom: 20px;
  color: #555;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  margin-bottom: 40px;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.links {
  display: flex;
  justify-content: space-around;
  margin-bottom: 40px;
}

.links a {
  padding: 12px 25px;
  background-color: #3498db;
  color: #fff;
  border-radius: 7px;
  transition: background-color 0.3s ease;
  font-weight: 500;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.links a:hover {
  background-color: #2980b9;
  text-decoration: none;
}

footer {
  background-color: #343a40;
  color: #fff;
  padding: 25px 30px;
  text-align: center;
  border-top: 1px solid #495057;
}

footer p {
  margin-bottom: 12px;
  font-size: 0.9rem;
}

footer a {
  color: #fff;
  margin: 0 15px;
  transition: color 0.3s ease;
}

footer a:hover {
  color: #adb5bd;
  text-decoration: none;
}

@media screen and (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: center;
  }

  .logo img {
    margin-bottom: 10px;
  }

  nav {
    flex-direction: column;
    width: 100%;
  }

  nav a {
    padding: 12px 0;
    text-align: center;
    border-bottom: 1px solid #dee2e6;
  }

  nav a:last-child {
    border-bottom: none;
  }

  .links {
    flex-direction: column;
    align-items: center;
  }

  .links a {
    margin: 15px 0;
    width: 80%;
    text-align: center;
  }
}