body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    text-align: center;
    color: #333;
}

header {
    background-color: #ffffff;
    padding: 2rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 300;
}

.app-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    padding: 0 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.app-card {
    background: #fff;
    border-radius: 12px;
    border: 1px solid #eaeaea;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
    width: 300px;
    display: flex;
    flex-direction: column;
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.1);
}

.app-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
    background-color: #eee;
}

.app-card h2 {
    margin: 1.5rem 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}