:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --card-bg: #ffffff;
    --border-color: #e9ecef;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 2rem;
    text-align: center;
}

h1, h2, h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

a {
    display: inline-block;
    margin: 0.5rem;
    padding: 0.6rem 1.2rem;
    background-color: var(--primary-color);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

a:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}