:root {
    --bg: #0b0f19;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --link: #93c5fd;
    --border: #1f2937;
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

main {
    max-width: 920px;
    margin: 0 auto;
    padding: 48px 20px;
}

header {
    margin-bottom: 22px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 32px;
    font-size: 14px;
    color: var(--muted);
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--text);
    text-decoration: none;
}

h1 {
    font-size: 28px;
    margin: 0 0 6px;
}

.meta {
    color: var(--muted);
    font-size: 14px;
}

.card {
    background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .02));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 22px;
}

h2 {
    font-size: 18px;
    margin: 18px 0 8px;
}

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

a:hover {
    text-decoration: underline;
}

footer {
    margin-top: 26px;
    color: var(--muted);
    font-size: 14px;
    border-top: 1px solid var(--border);
    padding-top: 14px;
}

ul {
    margin: 8px 0 0 18px;
}

code {
    background: rgba(255, 255, 255, .06);
    padding: 2px 6px;
    border-radius: 8px;
}