:root {
    --light: #fafafa;
    --dark: #1b1b1b;
    --accent: #8aa7ff;
    --radius: 8px;
}
body {
    margin: 0;
    font-family: system-ui, sans-serif;
    background: var(--light);
    color: var(--dark);
    transition: background 0.5s, color 0.5s;
}
section {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #eee;
}