:root {
    color-scheme: light dark;
    --bg: #ffffff;
    --fg: #1a1a1a;
    --muted: #5a5a5a;
    --accent: #6a4fb3;
    --border: #e2e2e2;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #16151a;
        --fg: #eaeaea;
        --muted: #a6a6a6;
        --accent: #b39ce8;
        --border: #333;
    }
}

* { box-sizing: border-box; }

body {
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
}

h1 { margin-bottom: 0.25rem; }

.tagline {
    color: var(--muted);
    margin-top: 0;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding: 0.75rem 0;
    margin: 1.25rem 0 2rem;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

nav a { font-size: 0.95rem; }

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

section { margin-bottom: 2rem; }

ul.plain { padding-left: 1.25rem; }

ul.plain li { margin-bottom: 0.5rem; }

table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
}

th, td {
    border: 1px solid var(--border);
    padding: 0.5rem 0.6rem;
    text-align: left;
    font-size: 0.95rem;
    vertical-align: top;
}

th { background: rgba(128,128,128,0.08); }

footer {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.85rem;
}

.note {
    color: var(--muted);
    font-size: 0.9rem;
}