body {
  background-image: url('https://i.imgur.com/1nWlx1E.png'); /* fond bleu quadrillé */
  background-size: 180px;
  font-family: "Courier New", monospace;
  color: #2e2e2e;
  margin: 0;
  padding: 30px;
}

.page {
  background-color: rgba(240, 248, 255, 0.9);
  border: 3px solid #91c8ff;
  border-radius: 15px;
  padding: 20px;
  max-width: 950px;
  margin: auto;
  box-shadow: 0 0 15px #bcdfff;
}

header {
  text-align: center;
  background-color: #cfe9ff;
  border: 2px dashed #91c8ff;
  border-radius: 10px;
  padding: 15px;
  margin-bottom: 25px;
}

h1 {
  color: #2a4d8f;
  font-size: 2em;
  margin: 0;
}

h2 {
  color: #2a4d8f;
  margin-bottom: 10px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background-color: #ffffff;
  border: 2px solid #91c8ff;
  border-radius: 10px;
  padding: 15px;
  box-shadow: 2px 2px 8px rgba(0, 0, 50, 0.1);
}

.card:hover {
  transform: scale(1.02);
  transition: 0.3s;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  margin: 8px 0;
}

a {
  color: #1f5fa4;
  text-decoration: none;
  font-weight: bold;
}

a:hover {
  color: #4aa3ff;
  text-decoration: underline;
}

.pic {
  width: 100px;
  border-radius: 50%;
  display: block;
  margin: 10px auto;
}

footer {
  margin-top: 40px;
  text-align: center;
  font-size: 0.9em;
  color: #567;
}