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

body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    color: #222;
    line-height: 1.6;
}

header {
    background: #1e293b;
    color: #fff;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: bold;
    font-size: 1.2rem;
}

nav a {
    color: #cbd5f5;
    text-decoration: none;
    margin-left: 15px;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
}

nav a:hover {
    background: #334155;
    color: #fff;
}

nav a.active {
    background: #3b82f6;
    color: #fff;
}

main {
    max-width: 900px;
    margin: 30px auto;
    padding: 0 15px;
}

.hero {
    background: #3b82f6;
    color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 25px;
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.bloc {
    background: #fff;
    padding: 20px 25px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.bloc h1,
.bloc h2 {
    margin-bottom: 10px;
    color: #111827;
}

.bloc p,
.bloc ul {
    margin-bottom: 10px;
}

.bloc ul {
    padding-left: 20px;
}

footer {
    text-align: center;
    padding: 15px;
    font-size: 0.9rem;
    color: #6b7280;
}