* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f2f2f2;
    color: #222;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
}

.top-bar {
    background: #20232a;
    color: #ffffff;
    padding: 16px 0;
    margin-bottom: 24px;
}

.logo {
    font-size: 1.4rem;
}

.main-nav {
    margin-top: 8px;
}

.main-nav a {
    color: #ffffff;
    text-decoration: none;
    margin-right: 16px;
    font-size: 0.95rem;
}

.main-nav a:hover {
    text-decoration: underline;
}

main.container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.card {
    background: #ffffff;
    border-radius: 8px;
    padding: 16px 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
}

.card h2 {
    margin-bottom: 8px;
}

.page-footer {
    background: #20232a;
    color: #ffffff;
    padding: 16px 0;
    font-size: 0.85rem;
}

@media (min-width: 600px) {
    .top-bar .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .main-nav {
        margin-top: 0;
    }
}