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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #333;
    background: #fafafa;
}

header {
    background: #fff;
    border-bottom: 1px solid #dbdbdb;
    padding: 0.75rem 1rem;
}

header nav {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: #333;
}

.nav-links a {
    margin-left: 1rem;
    text-decoration: none;
    color: #0095f6;
}

main {
    flex: 1;
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
}

footer {
    text-align: center;
    padding: 1rem;
    color: #999;
    font-size: 0.85rem;
    border-top: 1px solid #dbdbdb;
}

@media (max-width: 600px) {
    header nav {
        flex-direction: column;
        gap: 0.5rem;
    }
}