body {
  font-family: 'Poppins', sans-serif;
  background-color: #f5f6fa;
  margin: 0;
  padding: 0;
  line-height: 1.7;
  color: #2f3640;
}

header {
  background: linear-gradient(135deg, #192a56, #273c75);
  color: white;
  text-align: center;
  padding: 50px 10px;
  box-shadow: 0 3px 15px rgba(0, 0, 0, 0.2);
}

header h1 {
  margin: 0;
  font-size: 2.6em;
  letter-spacing: 1px;
}

header p {
  font-size: 1.1em;
  opacity: 0.9;
  margin-top: 10px;
}

main {
  max-width: 900px;
  background: white;
  margin: 60px auto;
  padding: 40px 50px;
  border-radius: 15px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

main:hover {
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.15);
}

h2 {
  color: #192a56;
  border-left: 6px solid #e1b12c;
  padding-left: 15px;
  margin-top: 40px;
  font-size: 1.5em;
}

p {
  text-align: justify;
  margin-bottom: 18px;
  font-size: 1.05em;
}

img {
  width: 100%;
  border-radius: 12px;
  margin: 25px 0;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

img:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.author {
  font-style: italic;
  color: #718093;
  text-align: right;
  margin-top: 30px;
}

footer {
  text-align: center;
  background-color: #273c75;
  color: white;
  padding: 20px;
  font-size: 0.9em;
  letter-spacing: 0.5px;
  box-shadow: 0 -3px 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  header h1 {
    font-size: 2em;
  }
  main {
    padding: 25px;
  }
  h2 {
    font-size: 1.3em;
  }
  p {
    font-size: 1em;
  }
}