{
  font-family: 'Open Sans', sans-serif;
  line-height: 1.7;
  color: #4a4a4a;
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

a {
  color: #2980b9;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #3498db;
  text-decoration: none;
}

header {
  background-color: #ecf0f1;
  padding: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.08);
}

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

nav {
  display: flex;
}

nav a {
  padding: 0 20px;
  font-weight: 600;
  color: #7f8c8d;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #2c3e50;
}

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

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

article:last-child {
    border-bottom: none;
}

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

p {
  margin-bottom: 20px;
  font-size: 17px;
}

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 3px 7px 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: 5px;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

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

footer {
  background-color: #2c3e50;
  color: #fff;
  padding: 30px;
  text-align: center;
  box-shadow: 0 -3px 5px rgba(0, 0, 0, 0.08);
}

footer p {
  margin-bottom: 15px;
  font-size: 15px;
}

footer a {
  color: #fff;
  margin: 0 15px;
  font-weight: 500;
  transition: color 0.3s ease;
}

footer a:hover {
  color: #ecf0f1;
}

@media screen and (max-width: 768px) {
  nav {
    flex-direction: column;
  }

  nav a {
    padding: 15px 0;
    text-align: center;
  }

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

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

  main {
    padding: 30px;
  }

  h1 {
    font-size: 28px;
  }
}