body {
    font-family: Arial, sans-serif;
    background: #f5f6f8;
    margin: 0;
    padding: 0;
}
header {
    background-color: #4a90e2;
    color: white;
    padding: 1rem;
    text-align: center;
    font-size: 1.5rem;
}
.container {
    max-width: 900px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}
.category {
    margin-bottom: 1.5rem;
}
.category h2 {
    border-left: 4px solid #4a90e2;
    padding-left: 0.5rem;
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 0.5rem;
}
.links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
}
.link-item {
    background: white;
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    display: flex;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: background 0.2s;
    height: 44px;
    text-decoration: none;
    color: #333;
    font-size: 14px;
}
.link-item:hover {
    background: #eaf3ff;
}
.link-item img {
    width: 20px;
    height: 20px;
    margin-right: 0.5rem;
}
.link-item span {
    flex: 1;
}