body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f6f8;
    color: #333;
}

header {
    background: #0a3d62;
    color: #fff;
    padding: 30px;
    text-align: center;
}

nav {
    background: #1e3799;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav a {
    color: #fff;
    padding: 12px 16px;
    text-decoration: none;
}

nav a:hover {
    background: #4a69bd;
}

section {
    padding: 40px;
    max-width: 1000px;
    margin: auto;
}

h2 {
    color: #1e3799;
    border-bottom: 2px solid #1e3799;
    padding-bottom: 5px;
}

.card {
    background: #fff;
    padding: 20px;
    margin: 15px 0;
    border-left: 5px solid #1e3799;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.skills-grid span {
    background: #dff9fb;
    padding: 10px;
    text-align: center;
    border-radius: 4px;
}

footer {
    background: #0a3d62;
    color: #fff;
    text-align: center;
    padding: 15px;
}