:root {
    --accent: #2dd4bf;
    --page: #0f1419;
    --panel-border: #2a3441;
    --text: #f1f5f9;
    --muted: #94a3b8;
}

* {
    box-sizing: border-box;
}

body {
    min-width: 320px;
    margin: 0;
    background: var(--page);
    color: var(--text);
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover,
a:focus-visible {
    text-decoration: underline;
}

.site-header,
.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: min(960px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 1.25rem 0;
}

.site-header {
    border-bottom: 1px solid var(--panel-border);
}

.site-header nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand {
    color: var(--text);
    font-size: 1.15rem;
    font-weight: 700;
    text-decoration: none;
}

.hero {
    width: min(960px, calc(100% - 2rem));
    margin: 3rem auto;
}

.hero-copy {
    color: var(--muted);
    max-width: 40rem;
}

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

.document {
    width: min(720px, calc(100% - 2rem));
    margin: 2rem auto 4rem;
}

.back-link {
    display: inline-block;
    margin-bottom: 1.5rem;
}

.button {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.6rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 0.375rem;
    text-decoration: none;
}