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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: #f5f5f5;
    color: #1a1a1a;
    line-height: 1.6;
    padding: 2rem 1rem;
    max-width: 900px;
    margin: 0 auto;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #1a1a1a;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2rem 0 1rem 0;
    color: #2c2c2c;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 0.5rem;
}

h2:first-of-type {
    margin-top: 0;
}

ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

li {
    background: white;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    transition: all 0.2s ease;
}

li:hover {
    border-color: #3b82f6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

a {
    display: block;
    padding: 0.875rem 1rem;
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

li:hover a {
    color: #3b82f6;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
    margin-top: 1rem;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    background: white;
    padding: 1rem;
}

@media (max-width: 640px) {
    ul {
        grid-template-columns: 1fr;
    }

    body {
        padding: 1rem 0.75rem;
    }
}