:root {
    --ink: #1c2530;
    --muted: #5b6876;
    --line: #dfe5ea;
    --accent: #0b6e69;
    --paper: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a {
    color: var(--accent);
}

.site-header,
main,
.site-footer {
    max-width: 44rem;
    margin: 0 auto;
    padding: 0 1rem;
}

.site-header {
    padding-top: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.brand {
    color: var(--ink);
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
}

.site-header ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
    margin: 0.75rem 0 0;
    padding: 0;
    list-style: none;
}

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

.site-header nav a[aria-current="page"] {
    color: var(--ink);
    font-weight: 600;
}

main {
    padding-top: 1.5rem;
    padding-bottom: 2rem;
}

h1 {
    margin: 0 0 1rem;
    font-size: 1.9rem;
    line-height: 1.2;
}

h2 {
    margin: 2rem 0 0.5rem;
    font-size: 1.25rem;
    line-height: 1.3;
}

main li {
    margin-bottom: 0.35rem;
}

.site-footer {
    padding-top: 1rem;
    padding-bottom: 2rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
}