:root {
    --max: 920px;
    --pad: 16px;
}

* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Arial, sans-serif;
    line-height: 1.6;
}

body {
    margin: 0;
    background: #f0f4f8;
    color: #111;
}

header,
main,
footer {
    max-width: var(--max);
    margin: 0 auto;
    padding: var(--pad);
}

nav {
    background: #004aad;
    color: #fff;
    padding: 10px var(--pad);
    position: sticky;
    top: 0;
    border-radius: 0 0 12px 12px;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin-right: 12px;
    font-weight: 500;
}

nav a:hover {
    color: #ffd700;
}

h1 {
    font-size: 1.8rem;
    margin-top: 20px;
}

.hero {
    background: #e3f2fd;
    border-radius: 16px;
    padding: 24px;
    margin-top: 18px;
}

.card {
    background: #fff9c4;
    border-radius: 16px;
    padding: 18px;
    margin-bottom: 16px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}

.cta {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid #222;
    text-decoration: none;
    background: #004aad;
    color: #fff;
}

.cta:hover {
    background: #ffd700;
    color: #111;
}

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 720px) {
    .grid {
        grid-template-columns: 1fr 1fr;
    }
}

footer {
    background: #004aad;
    color: #fff;
    text-align: center;
    padding: 10px var(--pad);
    border-radius: 12px 12px 0 0;
    font-weight: 500;
}

footer a {
    color: #ffd700;
    text-decoration: none;
    margin: 0 8px;
    font-weight: 500;
}

footer a:hover {
    color: #fff;
}

section {
    margin-bottom: 24px;
}