:root {
    font-family: system-ui, -apple-system, sans-serif;
    color: #202941;
    background: #f6f8fc;
    font-synthesis: none;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    line-height: 1.6;
}

a {
    color: #354bd4;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem max(5%, calc((100% - 1100px) / 2));
    background: white;
    border-bottom: 1px solid #e5e9f2;
}

.logo {
    color: #202941;
    font-weight: 800;
    font-size: 1.25rem;
    text-decoration: none;
}

.site-header nav {
    display: flex;
    gap: 1rem;
}

.site-header nav a {
    text-decoration: none;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 2rem 1.25rem 4rem;
}

.hero {
    padding: 3rem 0;
}

.hero h1 {
    max-width: 700px;
    margin: 0;
    font-size: clamp(2.2rem, 6vw, 4rem);
    line-height: 1.1;
}

.eyebrow,
.quiz-meta {
    color: #5864c9;
    font-weight: 700;
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

.quiz-card {
    padding: 1.25rem;
    background: white;
    border: 1px solid #e5e9f2;
    border-radius: 16px;
}

.button {
    display: inline-block;
    padding: 0.7rem 1rem;
    color: white;
    background: #354bd4;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
}

.site-footer {
    padding: 2rem 1.25rem;
    text-align: center;
    color: #5f6980;
}

@media (max-width: 560px) {
    .site-header {
        align-items: flex-start;
        flex-direction: column;
    }
}