:root {
    --bg: #0a0a1a;
    --fg: #f4f4f9;
    --muted: #9aa0b4;
    --accent: #e94560;
    --card: #16213e;
    --border: #0f3460;
}
* { box-sizing: border-box; }
html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.55;
}
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
main {
    flex: 1;
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
    padding: 48px 24px;
}
header {
    padding: 24px;
    text-align: center;
}
header a {
    color: var(--fg);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 2px;
    font-size: 24px;
}
h1 {
    font-size: 32px;
    margin: 0 0 8px;
}
h2 {
    font-size: 20px;
    margin: 32px 0 8px;
    color: var(--accent);
}
p, li { color: var(--fg); }
small, .muted { color: var(--muted); }
a { color: var(--accent); }
ul { padding-left: 20px; }
footer {
    padding: 24px;
    text-align: center;
    color: var(--muted);
    font-size: 12px;
    border-top: 1px solid var(--border);
}
footer a { color: var(--muted); margin: 0 8px; }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 20px;
    margin: 16px 0;
}
code { background: var(--card); padding: 1px 6px; border-radius: 4px; font-size: 0.9em; }