body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #fff;
    color: #111;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid #ddd;
}

header .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

header .logo img {
    height: 40px;
}

nav a {
    margin-left: 1.5rem;
    text-decoration: none;
    color: #111;
    font-weight: 500;
}

nav a:hover {
    color: #007BFF;
}

main {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.hero {
    text-align: center;
    margin-bottom: 2rem;
}

.project-card, .download-card {
    border: 1px solid #ddd;
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.project-card h3, .download-card h3 {
    margin-top: 0;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin-top: 0.5rem;
    background-color: #007BFF;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}

.btn:hover {
    background-color: #0056b3;
}

footer {
    text-align: center;
    padding: 1rem;
    border-top: 1px solid #ddd;
    margin-top: 2rem;
}