* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f4f6;
  color: #333;
  line-height: 1.6;
}

header {
  background-color: #ffffff;
  padding: 20px 40px;
  border-bottom: 1px solid #ccc;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 a {
  text-decoration: none;
  color: #4b0082;
  font-size: 1.8rem;
}

nav a {
  text-decoration: none;
  color: #333;
  margin-left: 20px;
  font-weight: 500;
}

main {
  max-width: 960px;
  margin: 30px auto;
  padding: 0 20px;
  background-color: #fff;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  padding: 20px;
}

article h2 {
  font-size: 1.6rem;
  margin-bottom: 10px;
  color: #4b0082;
}

footer {
  background-color: #222;
  color: #ccc;
  padding: 30px 40px;
  text-align: center;
  margin-top: 60px;
}

footer a {
  color: #aaa;
  margin: 0 10px;
  text-decoration: none;
}

#newsletter {
  margin-top: 20px;
}

#newsletter input[type="email"] {
  padding: 10px;
  border: none;
  border-radius: 4px;
  margin-right: 10px;
  width: 250px;
}

#newsletter button {
  padding: 10px 20px;
  border: none;
  background-color: #4b0082;
  color: white;
  border-radius: 4px;
  cursor: pointer;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.tile {
  background-color: white;
  border-radius: 6px;
  padding: 16px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.tile h3 {
  color: #4b0082;
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.tile p {
  font-size: 0.9rem;
}