* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

body {
    background-color: #f4f4f4;
    color: #333;
}

/* Header */
header {
    background-color: #2e2e2e;
    color: white;
    padding: 40px 20px;
    text-align: center;
    position: relative;
}

header h1 {
    margin-bottom: 10px;
}

header p {
    color: #cccccc;
}

/* Bouton accueil */
.btn-accueil {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    text-decoration: none;
    border: 1px solid white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.9em;
}

.btn-accueil:hover {
    background-color: white;
    color: #2e2e2e;
}

/* Main */
main {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

.sources-section {
    background-color: white;
    padding: 25px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.sources-section h2 {
    margin-bottom: 15px;
    color: #444;
}

.sources-section ul {
    list-style: disc;
    padding-left: 20px;
}

.sources-section li {
    margin-bottom: 8px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background-color: #2e2e2e;
    color: white;
    margin-top: 60px;
}