:root {
    --page-bg: #FFEDB9;
    --box-bg: #FFA259;
    --accent: #FF7E7E;
    --muted: #666666;
}

html,
body {
    height: 100%;
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
    color: #111;
    background: var(--page-bg);
}

.site-box {
    margin: 2rem 8rem 2rem 8rem;
    min-width: 2em;
    background: var(--box-bg);
    border: 1px solid #e6e9ee;
    border-radius: 10px;
    padding: 18px;
    box-shadow: 0 6px 18px rgba(20, 30, 40, 0.05);
    display: grid;
    grid-template-columns: 220px 1fr;
    grid-template-areas: "header header" "left main" "footer footer";
    gap: 18px;
}

.site-header {
    grid-area: header;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f2f4
}

.site-header h1 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--accent)
}

nav#leftNav {
    grid-area: left;
    background: #fbfdff;
    padding: 12px;
    border: 1px solid #f0f2f4;
    border-radius: 8px
}

.nav-categories span {
    display: block;
    font-weight: 700;
    margin-bottom: 8px
}

.nav-item a {
    display: block;
    color: var(--accent);
    text-decoration: none;
    margin: 6px 0
}

main {
    grid-area: main
}

footer {
    grid-area: footer;
    padding-top: 8px;
    border-top: 1px solid #f0f2f4;
    color: var(--muted);
    font-size: 0.95rem;
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap
}

@media (max-width:720px) {
    .site-box {
        grid-template-columns: 1fr;
        grid-template-areas: "header" "main" "left" "footer"
    }

    nav#leftNav {
        order: 3
    }
}