:root {
    --max-width: 720px;
    --space: 1.2rem;
    --text-color: #111;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.site-header {
    padding: var(--space);
}

.lang-switch {
    font-size: 0.9rem;
}

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space);
}

section {
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
}

.highlight {
    font-weight: 500;
}

.cta {
    display: inline-block;
    margin-top: 1rem;
    font-weight: bold;
}

@media (min-width: 768px) {
    :root {
        --max-width: 960px;
    }

    .hero h1 {
        font-size: 2.4rem;
    }
}